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|---|---|---|---|---|---|---|---|
12944146
|
10.1007/s11244-010-9569-6
|
Ruthenacycles, which are easily prepared in a single step by reaction between enantiopure aromatic amines and [Ru(arene)Cl2]2 in the presence of NaOH and KPF6, are very good asymmetric transfer hydrogenation catalysts. A range of aromatic ketones were reduced using isopropanol in good yields with ee’s up to 98%. Iridacycles, which are prepared in similar fashion from [IrCp*Cl2]2 are excellent catalysts for the racemisation of secondary alcohols and chlorohydrins at room temperature. This allowed the development of a new dynamic kinetic resolution of chlorohydrins to the enantiopure epoxides in up to 90% yield and 98% enantiomeric excess (ee) using a mutant of the enzyme Haloalcohol dehalogenase C and an iridacycle as racemisation catalyst.
|
Ruthenacycles and Iridacycles as Catalysts for Asymmetric Transfer Hydrogenation and Racemisation
|
ruthenacycles and iridacycles as catalysts for asymmetric transfer hydrogenation and racemisation
|
ruthenacycles enantiopure aromatic amines arene naoh asymmetric hydrogenation catalysts. aromatic ketones isopropanol ee’s iridacycles fashion ircp excellent catalysts racemisation alcohols chlorohydrins room temperature. chlorohydrins enantiopure epoxides enantiomeric excess enzyme haloalcohol dehalogenase iridacycle racemisation catalyst.
|
exact_dup
|
[
"12944142"
] |
141217375
|
10.1080/14725843.2011.530442
|
There is an important history often neglected by genealogies of ‘critical whiteness studies’: Steve Biko's Black Consciousness critique of white liberalism. What would it mean to retrieve this criticism in the context of white anti-racism in the post-apartheid era? Said's (2003) contrapuntal method proves useful here as a juxtaposing device whereby the writings of a past figure can be critically harnessed, travelling across temporal and ideological boundaries to interrogate the present. Four interlinked modes of disingenuous white anti-racism can thus be identified: (1) a fetishistic preoccupation with disproving one's racism; (2) ostentatious forms of anti-racism that function as means of self-promotion, as paradoxical means of white self-love; (3) the consolidation and extension of agency through redemptive gestures of ‘heroic white anti-racism’; (4) ‘charitable anti-racism’ which fixes tolerance within a model of charity, as an act of generosity and that reiterates the status and role of an anti-racist benefactor
|
Retrieving Biko: a Black Consciousness critique of whiteness
|
retrieving biko: a black consciousness critique of whiteness
|
neglected genealogies ‘critical whiteness studies’ steve biko consciousness critique liberalism. retrieve criticism racism apartheid said contrapuntal proves juxtaposing whereby writings critically harnessed travelling ideological boundaries interrogate present. interlinked disingenuous racism fetishistic preoccupation disproving racism ostentatious racism promotion paradoxical love consolidation agency redemptive gestures ‘heroic racism’ ‘charitable racism’ fixes tolerance charity generosity reiterates racist benefactor
|
exact_dup
|
[
"220163"
] |
143691476
|
10.1016/j.polymertesting.2012.04.003
|
Volumetric strains in a filled SBR specimen subjected to cyclic uniaxial tension with increasing extensions are studied. Digital image correlation is used to follow the kinematics of two orthogonal free faces. A volume expansion is observed past a critical elongation, which can be interpreted as the onset of cavitation. Under unloading, the volume returns to its original value and remains constant upon reloading. Increasing the elongation to higher values than the previous cycle leads again to a volumetric expansion
|
Volume changes in a filled elastomer studied via digital image correlation
|
volume changes in a filled elastomer studied via digital image correlation
|
volumetric filled specimen subjected cyclic uniaxial tension extensions studied. digital kinematics orthogonal faces. elongation interpreted onset cavitation. unloading returns reloading. elongation volumetric
|
exact_dup
|
[
"18275273"
] |
143692243
|
10.1016/j.triboint.2010.04.005.
|
This paper presents the results of a study of lubrication in form tapping and aims
at a better understanding of its effect. It appears that lubrication is of paramount
importance. Oil with efficient high pressure additives can reduce considerably the torque
necessary to form the thread. Lubricants reduce the tool / work material friction during the
forming process and, as a consequence, the resulting strain distribution and the strain
hardening of the thread are affected. This investigation includes an analysis on the effects of
additives in lubricants on the temperature during tapping, enabling correlation with the
appearance of chemical elements of the oil which react with the thread material and
contribute to lubrication.These AMN
these CIFR
|
An experimental study on the effects of lubrication in form tapping
|
an experimental study on the effects of lubrication in form tapping
|
presents lubrication tapping aims effect. lubrication paramount importance. additives considerably torque thread. lubricants friction forming hardening thread affected. additives lubricants tapping enabling appearance react thread lubrication.these cifr
|
exact_dup
|
[
"18275606"
] |
143693757
|
10.1016/j.msea.2012.01.128
|
The high manganese austenitic steels with low stacking fault energy (SFE) present outstanding mechanical properties due to the occurrence of two strain mechanisms: dislocation glide and twinning. Both mechanisms are anisotropic. In this paper, we analyzed the effect of monotonous loading path on the texture, the deformation twinning and the stress–strain response of polycrystalline high Mn TWIP steel. Experimental data were compared to predicted results obtained by two polycrystalline models. These two models are based on the same single crystal constitutive equations but differ from the homogenization scheme. The good agreement between experiments and calculations suggest that the texture plays a key role in twinning activity and kinetics with regard to the intergranular stress heterogeneities. Rolling direction simple shear induces single twinning while rolling and transverse direction uniaxial tensions induce multi-twinning leading to lower twin volume fractions due to twin–twin interactions
|
Modeling the deformation textures and microstructural evolutions of a Fe–Mn–C TWIP steel during tensile and shear testing
|
modeling the deformation textures and microstructural evolutions of a fe–mn–c twip steel during tensile and shear testing
|
manganese austenitic steels stacking fault outstanding occurrence dislocation glide twinning. anisotropic. monotonous loading texture deformation twinning stress–strain polycrystalline twip steel. polycrystalline models. constitutive homogenization scheme. texture plays twinning kinetics regard intergranular heterogeneities. rolling induces twinning rolling uniaxial tensions induce twinning twin fractions twin–twin
|
exact_dup
|
[
"29137864"
] |
144013029
|
10.1002/kin.20340
|
We report a quasi-classical trajectory study of the S + HO2 reaction using a previously reported global potential energy surface for the ground electronic state of HSO2. Zero-point energy leakage is approximately accounted for by using the vibrational energy quantum mechanical threshold method. Calculations are carried out both for specific ro-vibrational states of the reactants and thermalized ones, with rate constants being reported as a function of temperature. The results suggest that the title reaction is capture type, with OH and SO showing as the most favorable products. The internal energy distribution of such products and the reaction mechanism are also investigated. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 40: 533-540, 2008http://dx.doi.org/10.1002/kin.2034
|
Dynamics and kinetics of the S + HO2 reaction: A theoretical study
|
dynamics and kinetics of the s + ho2 reaction: a theoretical study
|
quasi trajectory leakage accounted vibrational method. vibrational reactants thermalized temperature. title capture favorable products. investigated. kinet kin.
|
exact_dup
|
[
"19125541"
] |
144013031
|
10.1002/elan.200403155
|
The mechanism of electrochemical oxidation of morin has been studied using cyclic, differential pulse and square-wave voltammetry techniques in aqueous electrolyte with solid, insoluble morin hydrate mechanically transferred to a glassy carbon electrode surface, over a wide pH range. The oxidation mechanism proceeds in sequential steps, related with the hydroxyl groups in the three aromatic rings and the oxidation is pH dependent over part of the pH range the oxidation potentials are shifted to lower values with increasing pH. Oxidation of the 2prime,4primedihydroxy moiety at the B ring of morin occurs first, at very low positive potentials, and is a one electron one proton reversible reaction. The hydroxyl groups oxidized at more positive potentials were shown to undergo an irreversible oxidation reaction.http://dx.doi.org/10.1002/elan.20040315
|
Solid State Electrochemical Oxidation Mechanisms Of Morin in Aqueous Media
|
solid state electrochemical oxidation mechanisms of morin in aqueous media
|
electrochemical oxidation morin cyclic voltammetry aqueous electrolyte insoluble morin hydrate mechanically transferred glassy electrode range. oxidation proceeds sequential hydroxyl aromatic rings oxidation oxidation potentials shifted oxidation prime primedihydroxy moiety morin potentials proton reversible reaction. hydroxyl oxidized potentials undergo irreversible oxidation reaction. elan.
|
exact_dup
|
[
"19125543"
] |
144013136
|
10.1002/jbt.10025
|
The mechanism of Cr(VI)-induced toxicity in plants and animals has been assessed for mitochondrial bioenergetics and membrane damage in turnip root and rat liver mitochondria. By using succinate as the respiratory substrate, ADP/O and respiratory control ratio (RCR) were depressed as a function of Cr(VI) concentration. State 3 and uncoupled respiration were also depressed by Cr(VI). Rat mitochondria revealed a higher sensitivity to Cr(VI), as compared to turnip mitochondria. Rat mitochondrial state 4 respiration rate triplicated in contrast to negligible stimulation of turnip state 4 respiration. Chromium(VI) inhibited the activity of the NADH-ubiquinone oxidoreductase (complex I) from rat liver mitochondria and succinate-dehydrogenases (complex II) from plant and animal mitochondria. In rat liver mitochondria, complex I was more sensitive to Cr(VI) than complex II. The activity of cytochrome c oxidase (complex IV) was not sensitive to Cr(VI). Unique for plant mitochondria, exogenous NADH uncoupled respiration was unaffected by Cr(VI), indicating that the NADH dehydrogenase of the outer leaflet of the plant inner membrane, in addition to complexes III and IV, were insensitive to Cr(VI). The ATPase activity (complex V) was stimulated in rat liver mitochondria, but inhibited in turnip root mitochondria. In both, turnip and rat mitochondria, Cr(VI) depressed mitochondrial succinate-dependent transmembrane potential (Deltapsi) and phosphorylation efficiency, but it neither affected mitochondrial membrane permeabilization to protons (H+) nor induced membrane lipid peroxidation. However, Cr(VI) induced mitochondrial membrane permeabilization to K+, an effect that was more pronounced in turnip root than in rat liver mitochondria. In conclusion, Cr(VI)-induced perturbations of mitochondrial bioenergetics compromises energy-dependent biochemical processes and, therefore, may contribute to the basal mechanism underlying its toxic effects in plant and animal cells. © 2002 Wiley Periodicals, Inc. J Biochem Mol Toxicol 16:53-63, 2002; Published online in Wiley Interscience (www.interscience.wiley.com). DOI 10.1002/jbt.10025http://dx.doi.org/10.1002/jbt.1002
|
Chromium(VI) interaction with plant and animal mitochondrial bioenergetics: A comparative study
|
chromium(vi) interaction with plant and animal mitochondrial bioenergetics: a comparative study
|
toxicity mitochondrial bioenergetics turnip mitochondria. succinate respiratory respiratory depressed concentration. uncoupled respiration depressed mitochondria turnip mitochondria. mitochondrial respiration triplicated negligible stimulation turnip respiration. chromium inhibited nadh ubiquinone oxidoreductase mitochondria succinate dehydrogenases mitochondria. mitochondria cytochrome oxidase mitochondria exogenous nadh uncoupled respiration unaffected nadh dehydrogenase outer leaflet complexes insensitive atpase stimulated mitochondria inhibited turnip mitochondria. turnip mitochondria depressed mitochondrial succinate transmembrane deltapsi phosphorylation neither mitochondrial permeabilization protons peroxidation. mitochondrial permeabilization pronounced turnip mitochondria. perturbations mitochondrial bioenergetics compromises biochemical basal toxic cells. biochem toxicol wiley interscience jbt. jbt.
|
exact_dup
|
[
"19125624"
] |
144013241
|
10.1002/jps.21007
|
A thorough conformational analysis of ibuprofen [2-(4-isobutylphenyl) propionic acid] was carried by out, using density functional theory (DFT) calculations coupled to optical vibrational spectroscopy (both Raman and FTIR). Eight different geometries were found to be energy minima. The relative orientations of the substituent groups in the ibuprofen molecule, which can be considered as a para-substituted phenyl ring, were verified to hardly affect its conformational stability. The internal rotations converting the calculated conformers of ibuprofen were studied and the intramolecular interactions governing the conformational preferences of the molecule were analyzed by quantitative potential energy deconvolution using Fourier type profiles. The harmonic vibrational frequencies and corresponding intensities were calculated for all the conformers obtained, leading to the assignment of the spectra, and evidencing the sole presence of one of the lowest energy conformers in the solid state. Vibrational spectroscopic proof of intermolecular hydrogen bonds between the carboxylic groups of adjacent ibuprofen molecules, leading to the formation of dimers, was also obtained. © 2007 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 97:845-859, 2008http://dx.doi.org/10.1002/jps.2100
|
Conformational stability of ibuprofen: Assessed by DFT calculations and optical vibrational spectroscopy
|
conformational stability of ibuprofen: assessed by dft calculations and optical vibrational spectroscopy
|
thorough conformational ibuprofen isobutylphenyl propionic vibrational spectroscopy raman ftir eight geometries minima. orientations substituent ibuprofen molecule para substituted phenyl verified hardly conformational stability. rotations converting conformers ibuprofen intramolecular governing conformational preferences molecule deconvolution fourier profiles. harmonic vibrational intensities conformers assignment evidencing sole conformers state. vibrational spectroscopic intermolecular bonds carboxylic adjacent ibuprofen dimers obtained. wiley liss inc. pharmacists pharm jps.
|
exact_dup
|
[
"19125686"
] |
144014010
|
10.1023/A:1022943627660
|
In this report we describe the case of an 11-year-old male with autism and mental retardation, presenting a tetrasomy of chromosome 3q. Cytogenetic analysis showed a mosaic for an unbalanced karyotype consisting of mos46,XY,add(12)(p13.3)(56)/46,XY(45). FISH using WCP and subtelomeric probes identified the extra material on 12p to be an inverted duplication of the distal segment of chromosome 3q. Anomalies in chromosome 3q have not been previously described in association with autism, although association with psychomotor delays and behavior problems has been frequently reported and are here further discussed. This chromosomal 3q segment is therefore likely to include genes involved in specific neurodevelopment pathways, and further analysis of the region is warranted for the identification of the molecular alterations that lead to the autistic features described.http://dx.doi.org/10.1023/A:102294362766
|
Partial Tetrasomy of Chromosome 3q and Mosaicism in a Child with Autism
|
partial tetrasomy of chromosome 3q and mosaicism in a child with autism
|
autism retardation presenting tetrasomy chromosome cytogenetic mosaic unbalanced karyotype consisting fish subtelomeric probes extra inverted duplication distal segment chromosome anomalies chromosome autism psychomotor delays frequently discussed. chromosomal segment neurodevelopment pathways warranted alterations autistic described.
|
exact_dup
|
[
"19126092"
] |
144025647
|
10.1016/j.ijpharm.2011.05.047
|
Implantable disks for glaucoma treatment were prepared by blending poly(ɛ-caprolactone), PCL, poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) and dorzolamide. Their in vivo performance was assessed by their capacity to decrease intraocular pressure (IOP) in normotensive and hypertensive eyes. Drug mapping showed that release was complete from blend disks and the low molecular weight (MW) PCL after 1 month in vivo. The high MW PCL showed non-cumulative release rates above the therapeutic level during 3 months in vitro. In vivo, the fibrous capsule formation around the implant controls the drug release, working as a barrier membrane. Histologic analysis showed normal foreign body reaction response to the implants. In normotensive eyes, a 20% decrease in IOP obtained with the disks during 1 month was similar to Trusopt® eyedrops treatment. In hypertensive eyes, the most sustained decrease was shown by the high MW PCL (40% after 1 month, 30% after 2 months). It was shown that the implants can lower IOP in sustained manner in a rabbit glaucoma model
|
In vitro and in vivo evaluation of an intraocular implant for glaucoma treatment
|
in vitro and in vivo evaluation of an intraocular implant for glaucoma treatment
|
implantable disks glaucoma blending poly caprolactone poly ethylene oxide poly propylene oxide poly ethylene oxide dorzolamide. intraocular normotensive hypertensive eyes. blend disks month vivo. cumulative therapeutic vitro. fibrous capsule implant barrier membrane. histologic foreign implants. normotensive eyes disks month trusopt® eyedrops treatment. hypertensive eyes sustained month implants sustained manner rabbit glaucoma
|
exact_dup
|
[
"19133780"
] |
147598587
|
10.1007/s11042-009-0398-1
|
In this paper we present a new approach for automatic summarization of rushes, or unstructured video. Our approach is composed of three major steps. First, based on shot and sub-shot segmentations, we filter sub-shots with low information content not likely to be useful in a summary. Second, a method using maximal matching in a bipartite graph is adapted to measure similarity between the remaining shots and to minimize inter-shot redundancy by removing repetitive retake shots common in rushes video. Finally, the presence of faces and motion intensity are characterised in each sub-shot. A measure of how representative the sub-shot is in the context of the overall video is then proposed. Video summaries composed of keyframe slideshows are then generated. In order to evaluate the effectiveness of this approach we re-run the evaluation carried out by TRECVid, using the same dataset and evaluation metrics used in the TRECVid video summarization task in 2007 but with our own assessors. Results show that our approach leads to a significant improvement on our own work in terms of the fraction of the TRECVid summary ground truth included and is competitive with the best of other approaches in TRECVid 2007
|
Automatic summarization of rushes video using bipartite graphs
|
automatic summarization of rushes video using bipartite graphs
|
automatic summarization rushes unstructured video. composed steps. shot shot segmentations filter shots summary. maximal matching bipartite adapted similarity shots minimize shot redundancy removing repetitive retake shots rushes video. faces characterised shot. shot video proposed. video summaries composed keyframe slideshows generated. effectiveness trecvid dataset metrics trecvid video summarization assessors. trecvid truth competitive trecvid
|
exact_dup
|
[
"11309225"
] |
147606647
|
10.1007/978-3-319-04114-8_43
|
In human-computer interaction, gaze orientation is an important and promising source of information to demonstrate the attention and focus of users. Gaze detection can also be an extremely useful metric for analysing human mood and affect. Furthermore, gaze can be used as an input method for human-computer interaction. However, currently real-time and accurate gaze estimation is still an open problem. In this paper, we propose a simple and novel estimation model of the real-time gaze direction of a user on a computer screen. This method utilises cheap capturing devices, a HD webcam and a Microsoft Kinect. We consider that the gaze motion from a user facing forwards is composed of the local gaze motion shifted by eye motion and the global gaze motion driven by face motion. We validate our proposed model of gaze estimation and provide experimental evaluation of the reliability and the precision of the method
|
Real-time gaze estimation using a Kinect and a HD webcam
|
real-time gaze estimation using a kinect and a hd webcam
|
gaze promising users. gaze extremely analysing mood affect. gaze interaction. gaze problem. propose gaze screen. utilises cheap capturing devices webcam microsoft kinect. gaze facing forwards composed gaze shifted gaze motion. validate gaze reliability precision
|
exact_dup
|
[
"19877768"
] |
147610306
|
10.1007/978-3-319-68548-9_56
|
Face authentication has been shown to be vulnerable against three main kinds of attacks: print, replay, and 3D mask. Among those, video replay attacks appear more challenging to be detected. There exist in the literature many countermeasures to face spoofing attacks, but a sophisticated detector is still needed to deal with particularly high-quality video based attacks. In this work, we perform analysis on the noise residual in frequency domain, and extract discriminative features by using a dynamic texture descriptor to characterize video based spoofing attacks. We propose a promising detector, which produces competitive results on the most challenging dataset of video based spoofing
|
Using LDP-TOP in video-based spoofing detection
|
using ldp-top in video-based spoofing detection
|
authentication vulnerable kinds attacks print replay mask. video replay attacks challenging detected. countermeasures spoofing attacks sophisticated deal video attacks. residual extract discriminative texture descriptor characterize video spoofing attacks. propose promising produces competitive challenging dataset video spoofing
|
exact_dup
|
[
"95876295"
] |
148653796
|
10.1007/978-3-540-69166-2_15
|
The classical approach to automatic cost analysis consists of two phases. Given a program and some measure of cost, we first produce recurrence relations (RRs) which capture the cost of our program in terms of the size of its input data. Second, we convert such RRs into closed form (i.e., without recurrences). Whereas the first phase has received considerable attention, with a number of cost analyses available for a variety of programming languages, the second phase has received comparatively little attention. In this paper we first study the features of RRs generated by automatic cost analysis and discuss why existing computer algebra systems are not appropriate for automatically obtaining closed form solutions nor upper bounds of them. Then we present, to our knowledge, the first practical framework for the fully automatic generation of reasonably accurate upper bounds of RRs originating from cost analysis of a wide range of programs. It is based on the inference of ranking functions and loop invariants and on partial evaluation
|
Automatic Inference of Upper Bounds for Recurrence Relations in Cost Analysis
|
automatic inference of upper bounds for recurrence relations in cost analysis
|
automatic phases. recurrence capture data. convert i.e. recurrences considerable programming languages comparatively attention. automatic automatically obtaining bounds them. practical automatic reasonably bounds originating programs. inference ranking invariants
|
exact_dup
|
[
"11992405"
] |
148660966
|
10.1063/1.3552195
|
This work reports on the growth by molecular beam epitaxy and characterization of InN/InGaN multiple quantum wells (MQWs) emitting at 1.5 μm. X-ray diffraction (XRD) spectra show satellite peaks up to the second order. Estimated values of well (3 nm) and barrier (9 nm) thicknesses were derived from transmission electron microscopy and the fit between experimental data and simulated XRD spectra. Transmission electron microscopy and XRD simulations also confirmed that the InGaN barriers are relaxed with respect to the GaN template, while the InN MQWs grew under biaxial compression on the InGaN barriers. Low temperature (14 K) photoluminescence measurements reveal an emission from the InN MQWs at 1.5 μm. Measurements as a function of temperature indicate the existence of localized states, probably due to InN quantum wells’ thickness fluctuations as observed by transmission electron microscopy
|
InN/InGaN multiple quantum wells emitting at 1.5 mu m grown by molecular beam epitaxy
|
inn/ingan multiple quantum wells emitting at 1.5 mu m grown by molecular beam epitaxy
|
epitaxy ingan wells mqws emitting diffraction satellite order. barrier thicknesses microscopy spectra. microscopy confirmed ingan barriers relaxed template mqws grew biaxial compression ingan barriers. photoluminescence reveal mqws localized probably wells’ microscopy
|
exact_dup
|
[
"11999588"
] |
148663229
|
10.1016/j.biosystemseng.2013.02.003
|
Light detection and ranging (LiDAR) technology is beginning to have an impact on agriculture.\ud
Canopy volume and/or fruit tree leaf area can be estimated using terrestrial laser sensors based on this technology. However, the use of these devices may have different options depending on the resolution and scanning mode. As a consequence, data accuracy and LiDAR derived parameters are affected by sensor configuration, and may vary according\ud
to vegetative characteristics of tree crops. Given this scenario, users and suppliers of these devices need to know how to use the sensor in each case. This paper presents a\ud
computer program to determine the best configuration, allowing simulation and evaluation of different LiDAR configurations in various tree structures (or training systems). The ultimate goal is to optimise the use of laser scanners in field operations. The software presented generates a virtual orchard, and then allows the scanning simulation with a laser sensor. Trees are created using a hidden Markov tree (HMT) model. Varying the foliar\ud
structure of the orchard the LiDAR simulation was applied to twenty different artificially created orchards with or without leaves from two positions (lateral and zenith). To validate the laser sensor configuration, leaf surface of simulated trees was compared with the parameters obtained by LiDAR measurements: the impacted leaf area, the impacted total area (leaves and wood), and th impacted area in the three outer layers of leaves
|
LiDAR simulation in modelled orchards to optimise the use of terretrial laser scanners and derived vegetative measures
|
lidar simulation in modelled orchards to optimise the use of terretrial laser scanners and derived vegetative measures
|
ranging lidar beginning agriculture. canopy fruit leaf terrestrial sensors technology. devices options scanning mode. lidar sensor vary vegetative crops. suppliers devices sensor case. presents allowing lidar configurations ultimate goal optimise scanners operations. generates virtual orchard scanning sensor. trees created hidden markov model. foliar orchard lidar twenty artificially created orchards leaves lateral zenith validate sensor leaf trees lidar impacted leaf impacted leaves wood impacted outer leaves
|
exact_dup
|
[
"12001781"
] |
148663678
|
10.1016/j.apsusc.2010.09.088
|
Monolithical series connection of silicon thin-film solar cells modules performed by laser scribing plays a very important role in the entire production of these devices. In the current laser process interconnection the two last steps are developed for a configuration of modules where the glass is essential as transparent substrate. In addition, the change of wavelength in the employed laser sources is sometimes enforced due to the nature of the different materials of the multilayer structure which make up the device. The aim of this work is to characterize the laser patterning involved in the monolithic interconnection process in a different configurations of processing than the usually performed with visible laser sources. To carry out this study, we use nanosecond and picosecond laser sources working at 355nm of wavelength in order to achieve the selective ablation of the material from the film side. To assess this selective removal of material has been used EDX (energy dispersive using X-ray) analysi
|
Selective ablation with UV lasers of a-Si:H thin film solar cells in direct scribing configuration
|
selective ablation with uv lasers of a-si:h thin film solar cells in direct scribing configuration
|
monolithical connection silicon film modules scribing plays devices. interconnection modules glass transparent substrate. sometimes enforced multilayer device. characterize patterning monolithic interconnection configurations visible sources. carry nanosecond picosecond selective ablation film side. selective removal dispersive analysi
|
exact_dup
|
[
"18424091"
] |
148668636
|
10.1002/pip.1170
|
In recent years, interest in light-emitting diode (LED) lighting has been growing because of its high efficacy, lifetime and ruggedness. This paper proposes a better adaptation of LED lamps to the technical requirements of photovoltaic lighting domestic systems, whose main quality criteria are reliability and that behave as voltage power supplies. As the key element of reliability in LED lamps is temperature, a solution is proposed for driving LED lamps using voltage sources, such as photovoltaic system batteries, with a control architecture based on pulse width modulation signal that regulates the current applied according to the LED lamp temperature. A prototype of the LED lamp has been implemented and tested to show its good performance at different temperatures and at different battery voltages
|
Temperature controlled light-emitting diode lamp for photovoltaic rural applications
|
temperature controlled light-emitting diode lamp for photovoltaic rural applications
|
emitting diode lighting growing efficacy lifetime ruggedness. proposes adaptation lamps photovoltaic lighting domestic reliability behave supplies. reliability lamps driving lamps photovoltaic batteries architecture modulation regulates lamp temperature. prototype lamp implemented battery voltages
|
exact_dup
|
[
"33171370"
] |
148668943
|
10.1016/J.PROCHE.2013.03.033
|
Research on the assessment of the effects of conservation/restoration treatments on stone material has been significant in recent years, with focus on the early observation of decay caused by the application of these treatments. However, in the case of archaeological sites, research is still scarce and few studies on the subject have been published. Restoration, as everything else, has changed according to trends, mainly guided by the release of new products and technologies, an experimental field where scientific assessment of suitability, efficacy and durability pre-evaluations of treatments are not always conducted. Some efforts have been made to solve this problem in the architectural field, where functional needs and technical requirements force to set clear standards. Unfortunately, archaeological sites, unlike historic buildings, have specific features that preclude the extrapolation of these results. A critical review of the methodologies, products and restoration materials is necessary, coupled with deeper research on degradation mechanisms caused by these treatments in the mid- and long-term. The aim of this paper is to introduce the research on the above issues using Merida as a case study
|
Effects of conservation interventions on the archaeological Roman site of Merida (Spain). Advance of research.
|
effects of conservation interventions on the archaeological roman site of merida (spain). advance of research.
|
conservation restoration treatments stone treatments. archaeological scarce published. restoration everything else changed guided technologies suitability efficacy durability evaluations treatments conducted. efforts solve architectural standards. unfortunately archaeological unlike historic buildings preclude extrapolation results. methodologies restoration deeper degradation treatments term. merida
|
exact_dup
|
[
"33171671"
] |
148669689
|
10.1007/978-3-319-03176-7_27
|
Most of the current evacuation plans are based on static signaling, fixed monitoring infrastructure, and limited user notification and feedback mechanisms. These facts lead to lower situation awareness, in the case event of an emergency, such as blocked emergency exits, while delaying the reaction time of individuals. In this context, we introduce the E-Flow communication system, which improves the user awareness by integrating personal, mobile and fixed devices with the existing monitoring infrastructure. Our system broadens the notification and monitoring alternatives, in real time, among, safety staff, end-users and evacuation related devices, such as sensors and actuators
|
E-Flow: A communication system for user notification in dynamic evacuation scenarios
|
e-flow: a communication system for user notification in dynamic evacuation scenarios
|
evacuation plans infrastructure notification mechanisms. facts awareness emergency blocked emergency exits delaying individuals. improves awareness integrating personal mobile devices infrastructure. broadens notification alternatives staff evacuation devices sensors actuators
|
exact_dup
|
[
"33172413"
] |
148675749
|
10.1007/s11119-015-9405-x
|
The requirements for a good stand in a no-till field are the same as those for conventional planting as well as added field and machinery management. Among the\ud
various factors that contribute towards producing a successful maize crop, seed depth placement is a key determinant. Although most no-till planters on the market work well under good soil and residue conditions, adjustments and even modifications are frequently\ud
needed when working with compacted or wet soils or with heavy residues. The main objective of this study, carried out in 2010, 2011 and 2012, was to evaluate the vertical\ud
distribution and spatial variability of seed depth placement in a maize crop under no-till conditions, using precision farming technologies and conventional no-till seeders. The results obtained indicate that the seed depth placement was affected by soil moisture content and forward speed. The seed depth placement was negatively correlated with soil resistance and seeding depth had a significant impact on mean emergence time and the percentage of emerged plants. Shallow average depth values and high coefficients of variation suggest a need for improvements in controlling the seeders’ sowing depth mechanism or more accurate calibration by operators in the field
|
A partial study of vertical distribution of conventional no-till seeders and spatial variability of seed depth placement of maize in the Alentejo region, Portugal
|
a partial study of vertical distribution of conventional no-till seeders and spatial variability of seed depth placement of maize in the alentejo region, portugal
|
stand till planting machinery management. producing successful maize crop seed placement determinant. till planters residue adjustments modifications frequently compacted soils residues. seed placement maize crop till precision farming technologies till seeders. seed placement moisture speed. seed placement negatively seeding emergence emerged plants. shallow improvements controlling seeders’ sowing calibration
|
exact_dup
|
[
"33176993"
] |
148680704
|
10.1016/j.sse.2015.05.039
|
High-power (HP) UV-LEDs can replace UV lamps for real-time fluoro-sensing applications by allowing portable and autonomous systems. However, HP UV-LEDs are not a mature technology, and there are still open issues regarding their performance evolution over time. This paper presents a reliability study of\ud
3W UV-LEDs, with special focus on LED degradation for two working conditions: continuous and cycled (30 s ON and 30 s OFF). Accelerated life tests are developed to evaluate the influence of temperature and electrical working conditions in high-power LEDs degradation, being the predominant failure mechanism the degradation of the package. An analysis that includes dynamic thermal and optical HP UV-LED measurements\ud
has been performed. Static thermal and stress simulation analysis with the finite element method (FEM) identifies the causes of package degradation. Accelerated life test results prove that HP UV-LEDs working in cycled condition have a better performance than those working in continuous condition
|
High-power UV-LED degradation: Continuous and cycled working condition influence
|
high-power uv-led degradation: continuous and cycled working condition influence
|
leds replace lamps fluoro sensing allowing portable autonomous systems. leds mature time. presents reliability leds degradation cycled accelerated electrical leds degradation predominant degradation package. performed. identifies package degradation. accelerated leds cycled
|
exact_dup
|
[
"80739192"
] |
148684399
|
10.1007/978-3-319-19390-8_7
|
We consider the problem of multi-class classification with imbalanced data-sets. To this end, we introduce a cost-sensitive multi-class Boosting algorithm (BAdaCost) based on a generalization of the Boosting margin, termed multi-class cost-sensitive margin. To address the class imbalance we introduce a cost matrix that weighs more hevily the costs of confused classes and a procedure to estimate these costs from the confusion matrix of a standard 0|1-loss classifier. Finally, we evaluate the performance of the approach with synthetic and real data-sets and compare our results with the AdaC2.M1 algorithm
|
Multi-class Boosting for imbalanced data.
|
multi-class boosting for imbalanced data.
|
imbalanced sets. boosting badacost generalization boosting margin termed margin. imbalance weighs hevily confused confusion classifier. synthetic adac
|
exact_dup
|
[
"78496949"
] |
148684793
|
10.1016/j.scitotenv.2016.09.172
|
Abstract Many maps (geology, hydrology, soil, vegetation, etc.) are created to inventory natural resources. Each of these resources is mapped using a unique set of criteria, including scales and taxonomies. Past research indicates that comparing results of related maps (e.g., soil and geology maps) may aid in identifying mapping deficiencies. Therefore, this study was undertaken in Almeria Province, Spain to (i) compare the underlying map structures of soil and vegetation maps and (ii) investigate if a vegetation map can provide useful soil information that was not shown on a soil map. Soil and vegetation maps were imported into ArcGIS 10.1 for spatial analysis, and results then exported to Microsoft Excel worksheets for statistical analyses to evaluate fits to linear and power law regression models. Vegetative units were grouped according to the driving forces that determined their presence or absence: (i) climatophilous (ii) lithologic-climate; and (iii) edaphophylous. The rank abundance plots for both the soil and vegetation maps conformed to Willis or Hollow Curves, meaning the underlying structures of both maps were the same. Edaphophylous map units, which represent 58.5% of the vegetation units in the study area, did not show a good correlation with the soil map. Further investigation revealed that 87% of the edaphohygrophilous units were found in ramblas, ephemeral riverbeds that are not typically classified and mapped as soils in modern systems, even though they meet the definition of soil given by the most commonly used and most modern soil taxonomic systems. Furthermore, these edaphophylous map units tend to be islands of biodiversity that are threatened by anthropogenic activity in the region. Therefore, this study revealed areas that need to be revisited and studied pedologically. The vegetation mapped in these areas and the soils that support it are key components of the earth's critical zone that must be studied, understood, and preserved
|
Islands of biogeodiversity in arid lands on a polygons map study: Detecting scale invariance patterns from natural resources maps
|
islands of biogeodiversity in arid lands on a polygons map study: detecting scale invariance patterns from natural resources maps
|
geology hydrology vegetation etc. created inventory resources. mapped taxonomies. e.g. geology identifying deficiencies. undertaken almeria province spain vegetation vegetation map. vegetation imported arcgis exported microsoft excel worksheets fits models. vegetative grouped driving forces climatophilous lithologic edaphophylous. abundance plots vegetation conformed willis hollow meaning same. edaphophylous vegetation map. edaphohygrophilous ramblas ephemeral riverbeds classified mapped soils modern meet commonly modern taxonomic systems. edaphophylous tend islands biodiversity threatened anthropogenic region. revisited pedologically. vegetation mapped soils earth understood preserved
|
exact_dup
|
[
"80739278"
] |
150211195
|
10.1021/acs.jpca.5b01792
|
Producción CientíficaIn this work neutral tyrosine has been generated in the gas phase by laser ablation of solid samples, and its most abundant conformers characterized through their rotational spectra. Their identification has been made by comparison between the experimental and ab initio values of the rotational and quadrupole coupling constants. Both conformers are stabilized by an O–H•••N hydrogen bond established within the amino acid skeleton chain and an additional weak N–H•••π hydrogen bond. The observed conformers differ in the orientation of the phenolic −OH group.Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. VA175U13
|
The Rotational Spectrum of Tyrosine
|
the rotational spectrum of tyrosine
|
producción científicain neutral tyrosine ablation abundant conformers rotational spectra. initio rotational quadrupole constants. conformers stabilized o–h•••n bond skeleton n–h•••π bond. conformers phenolic group.junta castilla león programa apoyo proyectos investigación ref.
|
exact_dup
|
[
"80526610"
] |
151646410
|
10.1016/j.msea.2013.08.048
|
Influence of stored elastic strain energy, Eelse, on thermo-mechanical fatigue behaviour of NiTi shape memory alloy (SMA)thermal actuator wire was investigated. Two near equi-atomic NiTi SMA wires obtained from different sources were evaluated for quasi-static and functional fatigue properties. Study showed that the wires had similar chemical composition, transformation temperatures and static\ud
mechanical properties. However, the functional fatigue behaviour of the wires upon thermo-mechanical cycling (TMC) was found to be significantly different. Under avariable TMC stress in the range 150–450 MPa and 4% recovery strain, one of the wires showed better stability, and substantially\ud
higher fatigue life(~30000cycles)than the other (~3500 cycles). Thermodynamic and microstructural analyses indicated that the wide variation in fatigue response of the wires was due to difference in magnitude of Eelse in the material. It is observed that at a given temperature above austenite start temperature (As), the wire with higher stored Eelse, generated about 70–100MP a higher recovery stress than that of the wire with lower stored Eelse. As a consequence,the maximum temperature, Tmax,\ud
necessary for generation of preset peak stress during reverse(martensite-austenite)transformation, was always less in the former wire than that of the latter. This in turn was responsible for wide variations in thermo-mechanical fatigue behaviour of the two wires upon TMC
|
Influence of stored elastic strain energy on fatigue behaviour of NiTi shape memory alloy thermal actuator wire
|
influence of stored elastic strain energy on fatigue behaviour of niti shape memory alloy thermal actuator wire
|
stored elastic eelse thermo fatigue niti alloy actuator wire investigated. equi niti wires quasi fatigue properties. wires properties. fatigue wires thermo cycling different. avariable recovery wires substantially fatigue cycles cycles thermodynamic microstructural fatigue wires eelse material. austenite wire stored eelse recovery wire stored eelse. tmax preset reverse martensite austenite former wire latter. thermo fatigue wires
|
exact_dup
|
[
"31237807"
] |
152380816
|
10.1016/j.nima.2006.01.094
|
poster Pistrui-Maximean, submitted to NIM AIn order to predict and optimize the response of phosphor screens, it is important to understand the role played by the different physical processes inside the scintillator layer. Monte Carlo simulations were carried out to determine the Modulation Transfer Function (MTF) of phosphor screens for energies used in X-ray medical imaging and nondestructive testing applications. The visualization of the dose distribution inside the phosphor layer gives an insight into how the MTF is progressively degraded by X-ray and electron transport. The simulation model allows to study the influence of physical and technological parameters on the detector performances, as well as to design and optimize new detector configurations. Preliminary MTF measurements have been carried out and agreement with experimental data has been found in the case of a commercial screen (Kodak Lanex Fine), at an X-ray tube potential voltage of 100 kV. Further validation with other screens (transparent or granular) at different energies is under way
|
Geant4 simulation of the response of phosphor screens for X-ray imaging
|
geant4 simulation of the response of phosphor screens for x-ray imaging
|
poster pistrui maximean submitted predict optimize phosphor screens played scintillator layer. monte carlo modulation phosphor screens nondestructive applications. visualization phosphor insight progressively degraded transport. influence technological performances optimize configurations. preliminary commercial screen kodak lanex fine tube validation screens transparent granular
|
exact_dup
|
[
"46780716",
"49304042"
] |
153789772
|
10.1016/j.gde.2014.12.001
|
Intratumour heterogeneity complicates biomarker discovery and treatment personalization, and pervasive cancer evolution is a key mechanism leading to therapy failure and patient death. Thus, understanding subclonal heterogeneity architectures and cancer evolution processes is critical for the development of effective therapeutic approaches which can control or thwart cancer evolutionary plasticity. Current insights into heterogeneity are mainly limited to the macroheterogeneity level, established by cancer subclones that have undergone significant clonal expansion. Novel single cell sequencing and blood-based subclonal tracking technologies are enabling detailed insights into microheterogeneity and the dynamics of clonal evolution. We assess how this starts to delineate the rules governing cancer evolution and novel angles for more effective therapeutic intervention
|
Dissecting cancer evolution at the macro-heterogeneity and micro-heterogeneity scale
|
dissecting cancer evolution at the macro-heterogeneity and micro-heterogeneity scale
|
intratumour heterogeneity complicates biomarker discovery personalization pervasive death. subclonal heterogeneity architectures therapeutic thwart evolutionary plasticity. insights heterogeneity macroheterogeneity subclones undergone clonal expansion. sequencing subclonal tracking technologies enabling insights microheterogeneity clonal evolution. starts delineate governing angles therapeutic
|
exact_dup
|
[
"82451021"
] |
154403268
|
10.1016/j.enconman.2016.12.096
|
In agricultural remote areas where electrical energy is required to supply water pumping plants, photovoltaic modules are considered a good option to generate electricity. The reliability of autonomous Photovoltaic water pumping plants depends essentially on the system components size, which should meet the criteria related to the plant autonomy and the water volume required for irrigation. In this context, this research paper proposes an approach to size the elements of an autonomous photovoltaic system equipped with an energy storage device (a battery bank), and which is used to supply a waterpumping plant with electricity. The proposed approach determines the optimal surface of the photovoltaic modules, the optimal capacity of the battery bank and the volume of the water storage tank.
The optimization approach takes into account the monthly average solar radiation, the fulfillment of the water needed for the crops’ irrigation and the number of the days of autonomy. Measured climatic data of 10 ha situated in Northern Tunisia and planted with tomato are used in the optimization process, which is conducted during the tomato vegetative cycle (from March to July). The optimal results achieved for this farm are 101.5 m2 of photovoltaic modules’ surface, 1680 A h/12 V of the battery bank and 1800 m3 of the volume of the water storage tank. Then, to verify the reliability of the proposed optimization approach, the results of the proposed sizing algorithm are compared with those of a commercial optimization tool named HOMER, which shows better results using the proposed approach. Finally, the economic reliability of the obtained size is studied and compared with systems that include a diesel generator, and a diesel generator- photovoltaic panels, respectively, using climatic and economic parameters in three countries: Tunisia, Spain and Jordan. The economic analysis for these water pumping systems showed that photovoltaic- batteries/Pump system is the optimum solution in the three countries. However, the initial cost of the system can be recuperated faster in Spain than in Tunisia and Jordan due to high prices of the diesel these two countries
|
Sensitivity analysis for photovoltaic water pumping systems: Energetic and economic studies
|
sensitivity analysis for photovoltaic water pumping systems: energetic and economic studies
|
agricultural remote electrical supply pumping photovoltaic modules option electricity. reliability autonomous photovoltaic pumping essentially meet autonomy irrigation. proposes autonomous photovoltaic equipped storage battery bank supply waterpumping electricity. determines photovoltaic modules battery bank storage tank. monthly fulfillment crops’ irrigation autonomy. climatic situated northern tunisia planted tomato tomato vegetative farm photovoltaic modules’ battery bank storage tank. verify reliability sizing commercial named homer approach. reliability diesel generator diesel generator photovoltaic panels climatic tunisia spain jordan. pumping photovoltaic batteries pump optimum countries. recuperated faster spain tunisia jordan prices diesel
|
exact_dup
|
[
"196151985"
] |
157867373
|
10.1007/s11098-012-9872-0
|
Among Bayesian confirmation theorists, several quantitative measures of the degree to which an evidential proposition E confirms a hypothesis H have been proposed. According to one popular recent measure, s, the degree to which E confirms H is a function of the equation P(H|E) − P(H|~E). A consequence of s is that when we have two evidential propositions, E1 and E2, such that P(H|E1) = P(H|E2), and P(H|~E1) ≠ P(H|~E2), the confirmation afforded to H by E1 does not equal the confirmation afforded to H by E2. I present several examples that demonstrate the unacceptability of this result, and conclude that we should reject s (and other measures that share this feature) as a measure of confirmation
|
A Problem For the Alternative Difference Measure of Confirmation
|
a problem for the alternative difference measure of confirmation
|
bayesian confirmation theorists evidential confirms proposed. popular confirms evidential propositions confirmation afforded confirmation afforded unacceptability reject share confirmation
|
exact_dup
|
[
"78374406"
] |
159843671
|
10.1016/j.math.2014.12.005
|
Neck pain is a common problem in the general population with high risk of ongoing complaints or relapses. Range of motion (ROM) assessment is scientifically established in the clinical process of diagnosis, prognosis and outcome evaluation in neck pain. Anatomically, the cervical spine (CS) has been considered in two regions, the upper and lower CS. Disorders like cervicogenic headache have been clinically associated with dysfunctions of the upper CS (UCS), yet ROM tests and measurements are typically conducted on the whole CS. A cross-sectional study assessing 19 subjects with non-specific neck pain was undertaken to examine UCS extension-flexion ROM in relation to self-reported disability and pain (via the Neck Disability Index (NDI)). Two measurement devices (goniometer and electromagnetic tracking) were employed and compared. Correlations between ROM and the NDI were stronger for the UCS compared to the CS, with the strongest correlation between UCS flexion and the NDI-headache (r = -0.62). Correlations between UCS and CS ROM were fair to moderate, with the strongest correlation between UCS flexion and CS extension ROM (r = -0.49). UCS flexion restriction is related to headache frequency and intensity. Consistency and agreement between both measurement systems and for all tests was high. The results demonstrate that separate UCS ROM assessments for extension and flexion are useful in patients with neck pain
|
Extension and flexion in the upper cervical spine in neck pain patients
|
extension and flexion in the upper cervical spine in neck pain patients
|
neck ongoing complaints relapses. scientifically prognosis neck pain. anatomically cervical spine disorders cervicogenic headache clinically dysfunctions sectional assessing neck undertaken examine flexion disability neck disability devices goniometer electromagnetic tracking compared. stronger strongest flexion headache fair moderate strongest flexion flexion restriction headache intensity. consistency high. assessments flexion neck
|
exact_dup
|
[
"160247212"
] |
160113922
|
10.1007/s10701-017-0132-1
|
It has been argued in Dawid (2013) that physicists at times generate substantial trust in an empirically unconfirmed theory based on observations that lie beyond the theory's intended domain. A crucial role in the reconstruction of this argument of "non-empirical confirmation" is played by limitations to scientific underdetermination. The present paper discusses the question as to how generic the role of limitations to scientific underdetermination really is. It is argued that assessing such limitations is essential for generating trust in any theory's predictions, be it empirically confirmed or not. The emerging view suggests that empirical and non-empirical confirmation\ud
are more closely related to each other than one may expect at first glance
|
Delimiting the Unconceived
|
delimiting the unconceived
|
argued dawid physicists substantial trust empirically unconfirmed intended domain. crucial reconstruction argument confirmation played limitations underdetermination. discusses generic limitations underdetermination really argued assessing limitations generating trust empirically confirmed not. emerging confirmation closely glance
|
exact_dup
|
[
"157868027"
] |
160452142
|
10.1098/rsos.150630
|
Plant–animal mutualistic networks are characterized by highly heterogeneous degree distributions. The majority of species interact with few partner species, while a small number are highly connected to form network hubs that are proposed to play an important role in community stability. It has not been investigated, however, if or how the degree distributions vary among types of mutualisms or communities, or between plants and animals in the same network. Here, we evaluate the degree distributions of pollination and seed-dispersal networks, which are two major types of mutualistic networks that have often been discussed in parallel, using an index based on Pielou's evenness. Among 56 pollination networks we found strong negative correlation of the heterogeneity between plants and animals, and geographical shifts of network hubs from plants in temperate regions to animals in the tropics. For 28 seed-dispersal networks, by contrast, the correlation was positive, and there is no comparable geographical pattern. These results may be explained by evolution towards specialization in the presence of context-dependent costs that occur if plants share the animal species as interaction partner. How the identity of network hubs affects the stability and resilience of the community is an important question for future studies
|
Geographical variation in the heterogeneity of mutualistic networks
|
geographical variation in the heterogeneity of mutualistic networks
|
plant–animal mutualistic heterogeneous distributions. majority interact partner hubs stability. vary mutualisms communities network. pollination seed dispersal mutualistic pielou evenness. pollination heterogeneity geographical shifts hubs temperate tropics. seed dispersal comparable geographical pattern. specialization share partner. hubs affects resilience
|
exact_dup
|
[
"56664335"
] |
16412627
|
10.1063/1.4768914
|
We demonstrate site-controlled growth of epitaxial Ag nanocrystals on patterned GaAs substrates by molecular beam epitaxy with high degree of long-range uniformity. The alignment is based on lithographically defined holes in which position controlled InAs quantum dots are grown. The Ag nanocrystals self-align preferentially on top of the InAs quantum dots. No such ordering is observed in the absence of InAs quantum dots, proving that the ordering is strain-driven. The presented technique facilitates the placement of active plasmonic nanostructures at arbitrarily defined positions enabling their integration into complex devices and plasmonic circuits
|
Site-controlled Ag nanocrystals grown by molecular beam epitaxy-Towards plasmonic integration technology
|
site-controlled ag nanocrystals grown by molecular beam epitaxy-towards plasmonic integration technology
|
epitaxial nanocrystals patterned gaas substrates epitaxy uniformity. alignment lithographically holes inas dots grown. nanocrystals align preferentially inas dots. ordering inas dots proving ordering driven. facilitates placement plasmonic nanostructures arbitrarily enabling devices plasmonic circuits
|
exact_dup
|
[
"148664142"
] |
16412813
|
10.1016/j.apenergy.2011.09.004
|
In this paper, we describe the development of a control system for Demand-Side Management in the residential sector with Distributed Generation. The electrical system under study incorporates local PV energy generation, an electricity storage system, connection to the grid and a home automation system. The distributed control system is composed of two modules: a scheduler and a coordinator, both implemented with neural networks. The control system enhances the local energy performance, scheduling the tasks demanded by the user and maximizing the use of local generation
|
Neural network controller for active demand side management with PV energy in the residential sector
|
neural network controller for active demand side management with pv energy in the residential sector
|
residential generation. electrical incorporates electricity storage connection home automation system. composed modules scheduler coordinator implemented networks. enhances scheduling tasks demanded maximizing
|
exact_dup
|
[
"148664624"
] |
16671634
|
10.1016/j.eswa.2011.05.021
|
As the use of recommender systems becomes more consolidated on the Net, an increasing need arises to develop some kind of evaluation framework for collaborative filtering measures and methods which is capable of not only testing the prediction and recommendation results, but also of other purposes which until now were considered secondary, such as novelty in the recommendations and the users? trust in these. This paper provides: (a) measures to evaluate the novelty of the users? recommendations and trust in their neighborhoods, (b) equations that formalize and unify the collaborative filtering process and its evaluation, (c) a framework based on the above-mentioned elements that enables the evaluation of the quality results of any collaborative filtering applied to the desired recommender systems, using four graphs: quality of the predictions, the recommendations, the novelty and the trust
|
A framework for collaborative filtering recommender systems
|
a framework for collaborative filtering recommender systems
|
recommender consolidated arises kind collaborative filtering capable recommendation purposes novelty recommendations trust these. novelty recommendations trust neighborhoods formalize unify collaborative filtering enables collaborative filtering desired recommender recommendations novelty trust
|
exact_dup
|
[
"148663504"
] |
18275590
|
10.1016/j.engfracmech.2013.06.001
|
The aim of this paper is to propose a flexible multiaxial modelling framework that is capable of combining two fatigue damage mechanisms so as to continuously describe the Kitagawa-Takahashi diagram. It is proposed that this diagram represents two distinct fatigue damage mechanisms: one associated with crack initiation (or microstructurally small cracks) and the other with crack propagation (or long cracks). It is further postulated that these damage mechanisms are more appropriately modelled using di erent fatigue criteria. A probabilistic modelling framework
is proposed in which any two suitable fatigue criteria can be combined in order to simultaneously model both damage mechanisms and the transition between them. This framework is based on the weakest link hypothesis and results in a probabilistic Kitagawa-Takahashi type diagram
|
A mechanistic approach to the Kitagawa-Takahashi diagram using a multiaxial probabilistic framework
|
a mechanistic approach to the kitagawa-takahashi diagram using a multiaxial probabilistic framework
|
propose flexible multiaxial capable combining fatigue continuously kitagawa takahashi diagram. fatigue crack initiation microstructurally cracks crack propagation cracks postulated appropriately modelled erent fatigue criteria. probabilistic fatigue simultaneously them. weakest probabilistic kitagawa takahashi
|
exact_dup
|
[
"143692197"
] |
18292671
|
10.1016/j.ijmachtools.2007.10.014
|
A new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element software (FORGE 2005) able to solve complex
thermo-mechanical problems. One of the main machining characteristics of titanium alloys is to produce segmented chips for a wide range of cutting speeds and feeds. The present study assumes that the chip segmentation is only induced by adiabatic shear banding,
without material failure in the primary shear zone. The new developed model takes into account the influence of strain, strain rate and temperature on the flow stress and also introduces a strain softening effect. The tool chip friction is managed by a combined
Coulomb–Tresca friction law. The influence of two different strain softening levels and machining parameters on the cutting forces and chip morphology has been studied. Chip morphology, cutting and feed forces predicted by numerical simulations are compared with
experimental results
|
A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al-4V
|
a new material model for 2d numerical simulation of serrated chip formation when machining titanium alloy ti-6al-4v
|
constitutive implemented analyse chip localisation machining titanium alloys. commercial forge solve thermo problems. machining titanium alloys segmented chips cutting speeds feeds. assumes chip segmentation adiabatic banding zone. introduces softening effect. chip friction managed coulomb–tresca friction law. softening machining cutting forces chip morphology studied. chip morphology cutting feed forces
|
exact_dup
|
[
"143692397"
] |
18320494
|
10.1007/978-3-319-04406-4_2
|
Extended periods of time sitting in front of a computer give rise to risks of developing musculoskeletal disorders. In the workplace, computer use contributes considerably to employee injury and results in significant costs to the employer in terms of sick leave and injury claims. Due to these risks there has been significant research into the areas of posture classification and subject intervention to improve posture in an office environment. The Kinect has been shown to be a suitable hardware platform for posture classification. This paper presents a system for posture classification and novel subject intervention that leverages each of three distinct forms of persuasive computing and explores the success of each type. Our results show significant improvement in posture results from the most effective of our intervention types
|
Measuring the effectiveness of user interventions in improving the seated posture of computer users
|
measuring the effectiveness of user interventions in improving the seated posture of computer users
|
sitting front risks musculoskeletal disorders. workplace contributes considerably employee injury employer sick leave injury claims. risks posture posture office environment. kinect hardware platform posture classification. presents posture leverages persuasive explores success type. posture
|
exact_dup
|
[
"147604986"
] |
19125825
|
10.1007/s10846-006-9045-5
|
Abstract The paper introduces the Active Observer (AOB) algorithm in the framework of Kalman filters. The AOB reformulates the Kalman filter to accomplish model-reference adaptive control based on: (1) A desired closed loop system. (2) An extra equation to estimate an equivalent disturbance referred to the system input. An active state is introduced to compensate unmodeled terms, providing a feedforward compensation action. (3) Stochastic design of the Kalman matrices. Stability analysis with model errors is discussed. An example of robot force control with an external and unknown nonlinear disturbance is presented (SISO system). Another example of model-matching control for steer-by-wire (SBW) vehicles with underactuated structure is discussed (MIMO system).http://dx.doi.org/10.1007/s10846-006-9045-
|
On Kalman Active Observers
|
on kalman active observers
|
introduces observer kalman filters. reformulates kalman filter accomplish adaptive desired system. extra disturbance referred input. compensate unmodeled feedforward compensation action. stochastic kalman matrices. discussed. robot unknown disturbance siso matching steer wire vehicles underactuated mimo
|
exact_dup
|
[
"144013502"
] |
19125844
|
10.1007/s11036-008-0058-0
|
Abstract A combined control of multimedia quality level, mobility and allocation of network resources is essential for the success of next generation mobile networks. In this context, this article presents the Multi-user Session Control (MUSC) solution to control the quality level of multimedia sessions shared by multiple-users, providing Quality of Service (QoS) mapping and QoS adaptation for those sessions over heterogeneous and mobile networks. MUSC uses the self-organized principle to coordinate QoS mapping and QoS adaptation mechanisms with mobility and resource allocation controllers, allowing the adaptation of a session to the current network conditions and the dynamic selection of the suitable network service class to map the session. MUSC minimizes the blocking probability, optimizes the usage of network resources and keeps sessions with an acceptable quality of experience. MUSC was evaluated in a simulation and in an experimental environment to analyze its convergence time, percentage of session blocking as well as delay, throughput, Peak Signal-to-Noise Ratio (PSNR), Mean Option Scores (MOS) and Structural Similarity Index (SSIM) of sessions in QoS-aware mobile scenarios.http://dx.doi.org/10.1007/s11036-008-0058-
|
QoS Support for Multi-user Sessions in IP-based Next Generation Networks
|
qos support for multi-user sessions in ip-based next generation networks
|
multimedia mobility allocation success mobile networks. presents session musc multimedia sessions shared adaptation sessions heterogeneous mobile networks. musc organized coordinate adaptation mobility resource allocation controllers allowing adaptation session session. musc minimizes blocking optimizes usage keeps sessions acceptable experience. musc analyze session blocking delay throughput psnr option similarity ssim sessions aware mobile scenarios.
|
exact_dup
|
[
"144013542"
] |
19877775
|
10.1007/978-3-319-04406-4_4
|
Sensor technologies can enable independent living for people with dementia by monitoring their behaviour and identifying points where support may be required. Wearable sensors can provide such support but may constitute a source of stigma for the user if they are perceived as visible and therefore obtrusive. This paper presents an empirical investigation exploring the extent to which wearable sensors are perceived as visible. 23 Participants wore eye tracking glasses, which superimposed the location of their gaze onto video data of their panorama. Participants were led to believe that the research entailed a subjective evaluation of the eye tracking glasses. A researcher wore one of two wearable sensors during the evaluation enabling us to measure the extent to which participants fixated on the sensor during a one-on-one meeting. Results are presented on the general visibility and potential fixations on two wearable sensors, a wrist-worn actigraph and a lifelogging camera, during normal conversation between two people
|
Visibility of wearable sensors as measured using eye tracking glasses
|
visibility of wearable sensors as measured using eye tracking glasses
|
sensor technologies enable living dementia identifying required. wearable sensors constitute stigma perceived visible obtrusive. presents exploring wearable sensors perceived visible. wore tracking glasses superimposed gaze video panorama. believe entailed subjective tracking glasses. researcher wore wearable sensors enabling fixated sensor meeting. visibility fixations wearable sensors wrist worn actigraph lifelogging camera conversation
|
exact_dup
|
[
"147606831"
] |
2452555
|
10.1088/1126-6708/2005/01/011
|
Using the clover fermion action in unquenched QCD with pion masses as low as
420 MeV, we look for evidence for chiral logs in the static-light decay
constant. There is some evidence for a chiral log term, if the original static
theory of Eichten and Hill is used. However, the more precise data from the
static action of the ALPHA collaboration do not show any evidence for
non-linear dependence of the static-light decay constant on the light quark
mass. We make some comments on the connection between chiral perturbation
theory for decay constants of the pion and static-light meson
|
Searching for chiral logs in the static-light decay constant
|
searching for chiral logs in the static-light decay constant
|
clover fermion unquenched pion look chiral logs constant. chiral eichten hill used. precise alpha mass. comments connection chiral perturbation pion meson
|
exact_dup
|
[
"80770083"
] |
2643795
|
10.1016/j.optcom.2007.09.007
|
We examine how the interference of a coherent light-pulse with its slightly
time-delayed copy may generate a pulse nearly identical to the original one and
ahead of it. The simplicity of this 2-pulse system enabled us to obtain exact
analytic expressions of the pulse distortion, valid for a wide class of pulse
shapes. Explicit results are given for the pulses usually considered (gaussian,
hyperbolic secant) but also for more realistic pulses of strictly limited
duration. We finally show that the efficiency of the 2-pulse system is
comparable to that of the other superluminal systems, at least for the pulse
advancements actually demonstrated in the optical experiments
|
Two-pulse interference and superluminality
|
two-pulse interference and superluminality
|
examine interference coherent delayed copy nearly ahead simplicity enabled analytic expressions distortion valid shapes. pulses hyperbolic secant realistic pulses strictly duration. comparable superluminal advancements
|
exact_dup
|
[
"44170363"
] |
29055268
|
10.1103/PhysRevD.86.083533.
|
The is a copy of an article published by American Physical Society: Mongwane, B., Dunsby, P. K. S., Osano, O. B. 2012. Cosmic electromagnetic fields due to perturbations in the gravitational field. Physical Review D. DOI: 10.1103/PhysRevD.86.083533.We use non-linear gauge-invariant perturbation theory to study the interaction of an inflation produced seed magnetic field with density and gravitational wave perturbations in an almost Friedmann-Lemaˆıtre-Robertson-Walker (FLRW) spacetime with zero spatial curvature. We compare the effects of this coupling under the assumptions of poor conductivity, perfect conductivity and the case where the electric field is sourced via the coupling of velocity perturbations to the seed field in the ideal magnetohydrodynamic (MHD) regime, thus generalizing, improving on and correcting previous results. We solve our equations for long wavelength limits and numerically integrate the resulting equations to generate power spectra for the electromagnetic field variables, showing where the modes cross the horizon. We find that the interaction can seed Electric fields with non-zero curl and that the curl of the electric field dominates the power spectrum on small scales, in agreement with previous arguments
|
Cosmic electromagnetic fields due to perturbations in the gravitational field
|
cosmic electromagnetic fields due to perturbations in the gravitational field
|
copy mongwane dunsby osano cosmic electromagnetic perturbations gravitational field. physrevd. perturbation inflation seed gravitational perturbations friedmann lemaˆıtre robertson walker flrw spacetime curvature. assumptions conductivity perfect conductivity sourced perturbations seed ideal magnetohydrodynamic generalizing improving correcting results. solve numerically integrate electromagnetic horizon. seed curl curl dominates arguments
|
exact_dup
|
[
"185410077"
] |
29137471
|
10.1007/s10443-011-9205-z
|
A low velocity impact study of aircraft tire rubber on 3D textile-reinforced
composite plates was performed experimentally and numerically. In contrast to regular unidirectional composite laminates, no delaminations occur in such a 3D textile composite.
Yarn decohesions, matrix cracks and yarn ruptures have been identified as the major damage mechanisms under impact load. An increase in the number of 3D warp yarns is proposed to improve the impact damage resistance. The characteristic of a rubber impact is the high amount of elastic energy stored in the impactor during impact, which was more than 90% of the initial kinetic energy. This large geometrical deformation of the rubber during impact leads to a less localised loading of the target structure and poses great
challenges for the numerical modelling. A hyperelastic Mooney-Rivlin constitutive law was used in Abaqus/Explicit based on a step-by-step validation with static rubber compression tests and low velocity impact tests on aluminium plates. Simulation models of the textile weave were developed on the meso- and macro-scale. The final correlation between impact
simulation results on 3D textile-reinforced composite plates and impact test data was promising, highlighting the potential of such numerical simulation tools
|
Rubber Impact on 3D Textile Composites
|
rubber impact on 3d textile composites
|
aircraft tire rubber textile reinforced composite plates experimentally numerically. unidirectional composite laminates delaminations textile composite. yarn decohesions cracks yarn ruptures load. warp yarns resistance. rubber elastic stored impactor energy. geometrical deformation rubber localised loading poses great challenges modelling. hyperelastic mooney rivlin constitutive abaqus validation rubber compression aluminium plates. textile weave meso macro scale. textile reinforced composite plates promising highlighting
|
exact_dup
|
[
"143692807"
] |
29520575
|
10.1007/JHEP08(2015)095
|
We construct a two-dimensional topological sigma model whose target space is
endowed with a Poisson algebra for differential forms. The model consists of an
equal number of bosonic and fermionic fields of worldsheet form degrees zero
and one. The action is built using exterior products and derivatives, without
any reference to any worldsheet metric, and is of the covariant Hamiltonian
form. The equations of motion define a universally Cartan integrable system. In
addition to gauge symmetries, the model has one rigid nilpotent supersymmetry
corresponding to the target space de Rham operator. The rigid and local
symmetries of the action, respectively, are equivalent to the Poisson bracket
being compatible with the de Rham operator and obeying graded Jacobi
identities. We propose that perturbative quantization of the model yields a
covariantized differential star product algebra of Kontsevich type. We comment
on the resemblance to the topological A model.Comment: 20 page
|
2D sigma models and differential Poisson algebras
|
2d sigma models and differential poisson algebras
|
topological sigma endowed poisson forms. bosonic fermionic worldsheet one. built exterior derivatives worldsheet covariant form. universally cartan integrable system. symmetries rigid nilpotent supersymmetry rham operator. rigid symmetries poisson bracket compatible rham obeying graded jacobi identities. propose perturbative quantization covariantized kontsevich type. comment resemblance topological
|
exact_dup
|
[
"35092112",
"35092571"
] |
30791951
|
10.1002/brb3.376
|
Introduction: The Activity-Regulated Cytoskeleton-associated (ARC) gene encodes a protein that is critical for the consolidation of synaptic plasticity and long-term memory formation. Given ARC's key role in synaptic plasticity, we hypothesized that genetic variations in ARC may contribute to interindividual variability in human cognitive abilities or to attention-deficit hyperactivity disorder (ADHD) susceptibility, where cognitive impairment often accompanies the disorder.
Methods: We tested whether ARC variants are associated with six measures of cognitive functioning in 670 healthy subjects in the Norwegian Cognitive NeuroGenetics (NCNG) by extracting data from its Genome-Wide Association Study (GWAS). In addition, the Swedish Betula sample of 1800 healthy subjects who underwent similar cognitive testing was also tested for association with 19 tag SNPs.
Results: No ARC variants show association at the study-wide level, but several markers show a trend toward association with human cognitive functions. We also tested for association between ARC SNPs and ADHD in a Norwegian sample of cases and controls, but found no significant associations.
Conclusion: This study suggests that common genetic variants located in ARC do not account for variance in human cognitive abilities, though small effects cannot be ruled out
|
Common variants in the ARC gene are not associated with cognitive abilities
|
common variants in the arc gene are not associated with cognitive abilities
|
regulated cytoskeleton encodes consolidation synaptic plasticity formation. synaptic plasticity hypothesized interindividual abilities deficit hyperactivity disorder adhd susceptibility impairment accompanies disorder. variants functioning healthy norwegian neurogenetics ncng extracting gwas swedish betula healthy underwent snps. variants markers toward functions. snps adhd norwegian associations. variants abilities ruled
|
exact_dup
|
[
"30906861"
] |
30850525
|
10.1038/ejhg.2014.150
|
Recent studies revealed the power of whole-exome sequencing to identify mutations in sporadic cases with non-syndromic intellectual disability. We now identified de novo missense variants in NAA10 in two unrelated individuals, a boy and a girl, with severe global developmental delay but without any major dysmorphism by trio whole-exome sequencing. Both de novo variants were predicted to be deleterious, and we excluded other variants in this gene. This X-linked gene encodes N-alpha-acetyltransferase 10, the catalytic subunit of the NatA complex involved in multiple cellular processes. A single hypomorphic missense variant p.(Ser37Pro) was previously associated with Ogden syndrome in eight affected males from two different families. This rare disorder is characterized by a highly recognizable phenotype, global developmental delay and results in death during infancy. In an attempt to explain the discrepant phenotype, we used in vitro N-terminal acetylation assays which suggested that the severity of the phenotype correlates with the remaining catalytic activity. The variant in the Ogden syndrome patients exhibited a lower activity than the one seen in the boy with intellectual disability, while the variant in the girl was the most severe exhibiting only residual activity in the acetylation assays used. We propose that N-terminal acetyltransferase deficiency is clinically heterogeneous with the overall catalytic activity determining the phenotypic severity
|
De novo missense mutations in the NAA10 gene cause severe non-syndromic developmental delay in males and females
|
de novo missense mutations in the naa10 gene cause severe non-syndromic developmental delay in males and females
|
exome sequencing sporadic syndromic intellectual disability. novo missense variants unrelated girl developmental delay dysmorphism trio exome sequencing. novo variants deleterious excluded variants gene. encodes alpha acetyltransferase catalytic subunit nata processes. hypomorphic missense variant ogden syndrome eight males families. rare disorder recognizable phenotype developmental delay infancy. attempt discrepant phenotype acetylation assays severity phenotype correlates catalytic activity. variant ogden syndrome exhibited intellectual disability variant girl exhibiting residual acetylation assays used. propose acetyltransferase deficiency clinically heterogeneous catalytic determining phenotypic severity
|
exact_dup
|
[
"33598581"
] |
33171858
|
10.1007/978-3-642-39259-7_19
|
Cloud-based infrastructure has been increasingly adopted by the industry in distributed software development (DSD) environments. Its proponents claim that its several benefits include reduced cost, increased speed and greater productivity in software development. Empirical evaluations, however, are in the nascent stage of examining both the benefits and the risks of cloud-based infrastructure. The objective of this paper is to identify potential benefits and risks of using cloud in a DSD project conducted by teams based in Helsinki and Madrid. A cross-case qualitative analysis is performed based on focus groups conducted at the Helsinki and Madrid sites. Participants observations are used to supplement the analysis. The results of the analysis indicated that the main benefits of using cloud are rapid development, continuous integration, cost savings, code sharing, and faster ramp-up. The key risks determined by the project are dependencies, unavailability of access to the cloud, code commitment and integration, technical debt, and additional support costs. The results revealed that if such environments are not planned and set up carefully, the benefits of using cloud in DSD projects might be overshadowed by the risks associated with it
|
Identifying Potential Risks and Benefits of Using Cloud in Distributed Software Development.
|
identifying potential risks and benefits of using cloud in distributed software development.
|
infrastructure increasingly adopted environments. proponents claim benefits productivity development. evaluations nascent examining benefits risks infrastructure. benefits risks teams helsinki madrid. qualitative helsinki madrid sites. supplement analysis. benefits savings sharing faster ramp risks dependencies unavailability commitment debt costs. environments planned carefully benefits projects overshadowed risks
|
exact_dup
|
[
"148669127"
] |
33173148
|
10.1016/j.energy.2014.07.074
|
Assuring the sustainability of quality in photovoltaic rural electrification programmes involves enhancing the reliability of the components of solar home systems as well as the characterization of the overall programme cost structure. Batteries and photovoltaic modules have a great impact on both the reliability and the cost assessment, the battery being the weakest component of the solar home system and consequently the most expensive element of the programme. The photovoltaic module, despite being the most reliable component, has a significant impact cost-wise on the initial investment, even at current market prices. This paper focuses on the in-field testing of both batteries and photovoltaic modules working under real operating conditions within a sample of 41 solar home systems belonging to a large photovoltaic rural electrification programme with more than 13,000 installed photovoltaic systems. Different reliability parameters such as lifetime have been evaluated, taking into account different factors, for example energy consumption rates, or the manufacturing quality of batteries. A degradation model has been proposed relating both loss of capacity and time of operation. The user e solar home system binomial is also analysed in order to understand the meaning of battery lifetime in rural electrification
|
In-field assessment of batteries and PV modules in a large photovoltaic rural electrification programme
|
in-field assessment of batteries and pv modules in a large photovoltaic rural electrification programme
|
assuring sustainability photovoltaic rural electrification programmes involves enhancing reliability home programme structure. batteries photovoltaic modules great reliability battery weakest home expensive programme. photovoltaic module reliable wise investment prices. focuses batteries photovoltaic modules operating home belonging photovoltaic rural electrification programme installed photovoltaic systems. reliability lifetime manufacturing batteries. degradation relating operation. home binomial analysed meaning battery lifetime rural electrification
|
exact_dup
|
[
"148670416"
] |
33174220
|
10.1088/0951-7715/26/4/1083
|
In this paper, we study a system of partial differential equations describing the evolution of a population under chemotactic effects with non-local reaction terms. We consider an external application of chemoattractant in the system and study the cases of one and two populations in competition. By introducing global competitive/cooperative factors in terms of the total mass of the populations, weobtain, forarangeofparameters, thatanysolutionwithpositive\ud
and bounded initial data converges to a spatially homogeneous state with positive components. The proofs rely on the maximum principle for spatially homogeneous sub- and super-solutions
|
On a competitive system under chemotactic effects with non-local terms
|
on a competitive system under chemotactic effects with non-local terms
|
describing chemotactic terms. chemoattractant competition. introducing competitive cooperative weobtain forarangeofparameters thatanysolutionwithpositive converges spatially homogeneous components. proofs rely spatially homogeneous super
|
exact_dup
|
[
"148671480"
] |
33175188
|
10.1016/0022-0248(83)90402-5
|
The dynamics of inviscid, axisymmetric liquid bridges permits a simplified treatment if the bridge is long enough. Under such condition the evolution of the liquid zone is satisfactorily explained through a non-linear one-dimensional model. In the case of breaking, the one-dimensional model fails when the neck radius of the liquid column is close to zero; however, the model allows the calculation of the time variation of the liquid-bridge interface as well as of the fluid velocity field and, because the last part of the evolution is not needed, the overall results such as the breaking time and the volume of each of the two drops resulting after breakage can be calculated. In this paper numerical results concerning the behavior of clinical liquid bridges subjected to a small axial gravitational field are presented
|
The influence of axial microgravity on the breakage of axisymmetric slender liquid bridges
|
the influence of axial microgravity on the breakage of axisymmetric slender liquid bridges
|
inviscid axisymmetric bridges permits simplified bridge enough. satisfactorily model. breaking fails neck bridge breaking drops breakage calculated. concerning bridges subjected axial gravitational
|
exact_dup
|
[
"148672442"
] |
33971972
|
10.1007/s10680-016-9379-z
|
This paper investigates the associations between preferred family size of women in rural Bihar, India and the fertility behaviours of their mother and mother-in-law. Scheduled interviews of 440 pairs of married women aged 16–34 years and their mothers-in-law were conducted in 2011. Preferred family size is first measured by Coombs scale, allowing us to capture latent desired number of children and then categorized into three categories (low, medium and high). Women’s preferred family size is estimated using ordered logistic regression. We find that the family size preferences are not associated with mother’s fertility but with mother’s education. Mother-in-law’s desired number of grandchildren is positively associated with women’s preferred family size. However, when the woman has higher education than her mother-in-law, her preferred family size gets smaller, suggesting that education provides women with greater autonomy in their decision-making on childbearing
|
Like Mother(-in-Law) Like Daughter? Influence of the Older Generation’s Fertility Behaviours on Women’s Desired Family Size in Bihar, India
|
like mother(-in-law) like daughter? influence of the older generation’s fertility behaviours on women’s desired family size in bihar, india
|
investigates associations preferred rural bihar india fertility behaviours mother mother law. scheduled interviews married aged mothers preferred coombs allowing capture latent desired categorized categories women’s preferred ordered logistic regression. preferences mother’s fertility mother’s education. mother law’s desired grandchildren positively women’s preferred size. woman mother preferred gets autonomy childbearing
|
exact_dup
|
[
"131079232",
"52954197"
] |
35089813
|
10.1007/JHEP05(2015)127
|
We study the collider phenomenology of the leptophobic Z ′ boson from an extra U(1)′ gauge symmetry in models with N -Higgs doublet fields. We assume that the Z ′ boson at tree level has (i) no Z - Z ′ mixing, (ii) no interaction with the charged leptons, and (iii) no flavour-changing neutral current. Under such a setup, it is shown that in the N = 1 case, all the U(1)′ charges of left-handed quark doublets and right-handed up- and down- type quarks are required to be the same, while in the N ≥ 3 case one can take different charges for the three types of quarks. The N = 2 case is not well-defined under the above three requirements. We study the pp → Z ′ V → b b ¯ V $$ pp\to Z^{\prime }V\to b\overline{b}V $$ processes ( V = γ , Z and W ± ) with the leptonic decays of Z and W ± at the LHC. The most promising discovery channel or the most stringent constraint on the U(1)′ gauge coupling constant comes from the Z ′γ process below the t t ¯ $$ t\overline{t} $$ threshold and from the t t ¯ $$ t\overline{t} $$ process above the threshold. Assuming the collision energy of 8 TeV and integrated luminosity of 19.6 fb −1 , we find that the constraint from the Z ′γ search in the lower mass regime can be stronger than that from the UA2 experiment. In the N ≥ 3 case, we consider four benchmark points for the Z ′ couplings with quarks. If such a Z ′ is discovered, a careful comparison between the Z ′γ and Z ′ W signals is crucial to reveal the nature of Z ′ couplings with quarks. We also present the discovery reach of the Z ′ boson at the 14-TeV LHC in both N = 1 and N ≥ 3 cases
|
Leptophobic Z ′ in models with multiple Higgs doublet fields
|
leptophobic z ′ in models with multiple higgs doublet fields
|
collider phenomenology leptophobic boson extra doublet fields. boson leptons flavour changing neutral current. setup charges handed doublets handed quarks charges quarks. requirements. prime overline leptonic decays lhc. promising discovery stringent comes overline overline threshold. collision luminosity stronger experiment. benchmark couplings quarks. discovered careful crucial reveal couplings quarks. discovery boson
|
exact_dup
|
[
"35089898"
] |
35089821
|
10.1007/JHEP05(2015)126
|
We consider double scaled little string theory on K 3. These theories are labelled by a positive integer k ≥ 2 and an ADE root lattice with Coxeter number k . We count BPS fundamental string states in the holographic dual of this theory using the super-conformal field theory K 3 × S L 2 ℝ k U 1 × S U 2 k U 1 / ℤ k $$ K3\times \left(\frac{\mathrm{SL}{\left(2,\mathbb{R}\right)}_k}{\mathrm{U}(1)}\times \frac{\mathrm{SU}{(2)}_k}{\mathrm{U}(1)}\right)/{\mathbb{Z}}_k $$ . We show that the BPS fundamental string states that are counted by the second helicity supertrace of this theory give rise to weight two mixed mock modular forms. We compute the helicity supertraces using two separate techniques: a path integral analysis that leads to a modular invariant but non-holomorphic answer, and a Hamiltonian analysis of the contribution from discrete states which leads to a holomorphic but not modular invariant answer. From a mathematical point of view the Hamiltonian analysis leads to a mixed mock modular form while the path integral gives the completion of this mixed mock modular form. We also compare these weight two mixed mock modular forms to those that appear in instances of Umbral Moonshine labelled by Niemeier root lattices X that are powers of ADE root lattices and find that they are equal up to a constant factor that we determine. In the course of the analysis we encounter an interesting generalization of Appell-Lerch sums and generalizations of the Riemann relations of Jacobi theta functions that they obey
|
ADE double scaled little string theories, mock modular forms and Umbral Moonshine
|
ade double scaled little string theories, mock modular forms and umbral moonshine
|
scaled labelled integer coxeter count holographic super conformal frac mathrm mathbb mathrm frac mathrm mathrm mathbb counted helicity supertrace mock modular forms. helicity supertraces modular holomorphic answer holomorphic modular answer. mathematical mock modular completion mock modular form. mock modular instances umbral moonshine labelled niemeier lattices powers lattices determine. encounter generalization appell lerch sums generalizations riemann jacobi theta obey
|
exact_dup
|
[
"35089906"
] |
35089853
|
10.1007/JHEP05(2015)104
|
We study the question of how reliably one can distinguish two quantum field theories (QFTs). Each QFT defines a probability distribution on the space of fields. The relative entropy provides a notion of proximity between these distributions and quantifies the number of measurements required to distinguish between them. In the case of nearby conformal field theories, this reduces to the Zamolodchikov metric on the space of couplings. Our formulation quantifies the information lost under renormalization group flow from the UV to the IR and leads us to a quantification of fine-tuning. This formalism also leads us to a criterion for distinguishability of low energy effective field theories generated by the string theory landscape
|
Relative entropy and proximity of quantum field theories
|
relative entropy and proximity of quantum field theories
|
reliably distinguish qfts defines fields. notion proximity quantifies distinguish them. nearby conformal reduces zamolodchikov couplings. formulation quantifies lost renormalization quantification fine tuning. formalism criterion distinguishability landscape
|
exact_dup
|
[
"35089938"
] |
35090166
|
10.1007/JHEP04(2015)174
|
We explore scalar dark matter that is part of a lepton flavor triplet satisfying symmetry requirements under the hypothesis of minimal flavor violation. Beyond the standard model, the theory contains in addition three right-handed neutrinos that participate in the seesaw mechanism for light neutrino mass generation. The dark-matter candidate couples to standard-model particles via Higgs-portal renormalizable interactions as well as to leptons through dimension-six operators, all of which have minimal flavor violation built-in. We consider restrictions on the new scalars from the Higgs boson measurements, observed relic density, dark-matter direct detection experiments, LEP II measurements on e + e − scattering into a photon plus missing energy, and searches for flavor-violating lepton decays. The viable parameter space can be tested further with future data. Also, we investigate the possibility of the new scalars’ couplings accounting for the tentative hint of Higgs flavor-violating decay h → μτ recently detected in the CMS experiment. They are allowed by constraints from other Higgs data to produce a rate of this decay roughly compatible with the CMS finding
|
Lepton-flavored scalar dark matter with minimal flavor violation
|
lepton-flavored scalar dark matter with minimal flavor violation
|
explore lepton flavor triplet satisfying flavor violation. handed neutrinos participate seesaw generation. candidate couples portal renormalizable leptons flavor violation built restrictions scalars boson relic missing searches flavor violating lepton decays. viable data. scalars’ couplings accounting tentative hint flavor violating experiment. roughly compatible
|
exact_dup
|
[
"35090078"
] |
35090940
|
10.1007/JHEP03(2015)164
|
We use the Ward identities corresponding to general linear transformations, and derive relations between transport coefficients of (2 + 1)-dimensional systems. Our analysis includes relativistic and Galilean invariant systems, as well as systems without boost invariance such as Lifshitz theories. We consider translation invariant, as well as broken translation invariant cases, and include an external magnetic field. Our results agree with effective theory relations of incompressible Hall fluid, and with holographic calculations in a magnetically charged black hole background
|
Ward identities for transport in 2+1 dimensions
|
ward identities for transport in 2+1 dimensions
|
ward identities transformations derive systems. relativistic galilean boost invariance lifshitz theories. translation broken translation field. agree incompressible hall holographic magnetically
|
exact_dup
|
[
"35090845"
] |
35092417
|
10.1007/JHEP08(2015)141
|
We propose a new model with the Majorana neutrino masses generated at two-loop level, in which the lepton number violation (LNV) processes, such as neutrino-less double beta decays, are mainly induced by the dimension-7 LNV effective operator O 7 = l ¯ R c γ μ L L D μ Φ Φ Φ $$ {\mathcal{O}}_7={\overline{l}}_R^c{\gamma}^{\mu }{L}_L\left({D}_{\mu}\varPhi \right)\varPhi \varPhi $$ . Note that it is necessary to impose an Z 2 symmetry in order that O 7 $$ {\mathcal{O}}_7 $$ dominates over the conventional dimension-5 Weinberg operator, which naturally results in a stable Z 2 -odd neutral particle to be the cold dark matter candidate. More interestingly, due to the non-trivial dependence of the charged lepton masses, the model predicts the neutrino mass matrix to be in the form of the normal hierarchy. We also focus on a specific parameter region of great phenomenological interests, such as electroweak precision tests, dark matter direct searches along with its relic abundance, and lepton flavor violation processes
|
Connecting neutrino masses and dark matter by high-dimensional lepton number violation operator
|
connecting neutrino masses and dark matter by high-dimensional lepton number violation operator
|
propose majorana lepton violation beta decays mathcal overline gamma varphi varphi varphi impose mathcal dominates weinberg naturally neutral cold candidate. interestingly trivial lepton predicts hierarchy. great phenomenological interests electroweak precision searches relic abundance lepton flavor violation
|
exact_dup
|
[
"35091959"
] |
41129237
|
10.1007/s10997-012-9211-z
|
According to recent literature, effective knowledge management should be coherent and based on the firm’s strategy. Prior empirical research, in contrast, tries to evaluate the impact of knowledge management initiatives directly on per- formance but finds inconsistent results and not allows the understanding of knowledge management contribution to competitive advantage generation. In this study we aim to investigate the impact of knowledge management and strategy configuration coherence on SMEs innovation and organizational performance through a quantitative analysis carried out on a sample of 60 manufacturing SMEs in northeast Italy. Our findings reveal that a significant coherence exists between knowledge management and strategy configurations. Most of the SMEs with a prospector and defender strategy adopt, in turn, an aggressive and conservative knowledge management. Moreover, we find that such coherence has a significant impact on the overall performance. This is particularly interesting since it suggests that the inconsistency in the results of prior studies on the impact of knowledge management on performance (Kalling in J Knowl Manag 7(3):67–81; 2003) may be due to the lack of consideration of knowledge management and strategy configu- ration coherence
|
The impact of knowledge management and strategy configuration coherence on SME performance
|
the impact of knowledge management and strategy configuration coherence on sme performance
|
coherent firm’s strategy. tries initiatives formance finds inconsistent competitive advantage generation. coherence smes innovation organizational manufacturing smes northeast italy. reveal coherence configurations. smes prospector defender adopt aggressive conservative management. coherence performance. inconsistency kalling knowl manag consideration configu ration coherence
|
exact_dup
|
[
"53169780"
] |
41133215
|
10.1016/j.matlet.2012.04.096
|
The synthesis of Ho3 +–Yb3 + codoped titanate nanotubes was carried out successfully via a hydrothermal treatment method from a precursor powder. These novel nanotubes treated at RT, 100 °C and 280 °C were studied with the aim of determining their structural and optical properties. As the thermal treatment was increased, their upconversion emission becomes stronger. This behavior was related to reduction of hydroxyl groups and the water on the surface, which resulted in changes in the interlayer distances of the nanotubes
|
Upconverting Ho–Yb doped titanate nanotubes
|
upconverting ho–yb doped titanate nanotubes
|
codoped titanate nanotubes successfully hydrothermal precursor powder. nanotubes determining properties. upconversion stronger. hydroxyl resulted interlayer distances nanotubes
|
exact_dup
|
[
"53173752"
] |
41139762
|
10.1007/978-3-319-07470-2_11
|
A trader’s execution strategy has a large effect on his profits. Identifying an optimal strategy, however, is often frustrated by the complexity of market microstructures. We analyse an order book based on continuous double auction market under two different models of trader’s behaviour. In the first case actions only depend on a linear combination of the best bid and ask. In the second model, traders adopt the Markov perfect equilibrium strategies of the trading game. Both models are analytically intractable, and so optimal strategies are identified by the use of numerical techniques. Using the Markov model we show that, beyond the best quotes, additional information has little effect on either the behaviour of traders or the dynamics of the market. The remarkable similarity of the results obtained by the linear model indicates that the optimal strategy may be reasonably approximated by a linear function. We conclude that while the order book market and strategy space of traders are potentially very large and complex, optimal strategies may be relatively simple and based on a minimal information set
|
The Simplicity of Optimal Trading in Order Book Markets
|
the simplicity of optimal trading in order book markets
|
trader’s execution profits. identifying frustrated microstructures. analyse book auction trader’s behaviour. ask. traders adopt markov perfect trading game. analytically intractable techniques. markov quotes traders market. remarkable similarity reasonably approximated function. book traders potentially
|
exact_dup
|
[
"53180291"
] |
41148835
|
10.1016/j.quaint.2008.06.017
|
The Piànico-Sèllere is a lacustrine succession from northern Italy that records a sequence of climatic transitions across two Pleistocene glacial stages. The intervening interglacial stage is represented by well-preserved varves with calcitic (summer) and clastic (winter) laminae. There is a tight coupling between climate-driven lithologic changes and magnetic
susceptibility variations, and stable paleomagnetic components were retrieved from all investigated lithologies including the largely diamagnetic calcite varves. These components were used to delineate a sequence of magnetic polarity reversals that was interpreted as a record of excursions of the Earth’s magnetic field. Comparison of the
magnetostratigraphic results with previously published data allows discussion of two possible models which have generated controversy regarding the age of the Piànico
Formation. The data indicates that the Piànico Formation magnetostratigraphy correlates to geomagnetic field excursions across the Brunhes/Matuyama transition, and
consequently the Piànico interglacial correlates to marine isotope stage 19. This
correlation option is substantially consistent with K-Ar radiometric age estimates recently obtained from a tepha layer interbedded in the Piànico Formation. The alternative option, considering the Piànico interglacial correlative to marine isotope stage 11 within the Brunhes Chron as supported by tephrochronological dating reported in the literature, is not supported by the magnetostratigraphic results
|
Paleomagnetic investigations on the Pleistocene lacustrine sequence of Piànico-Sèllere (northern Italy)
|
paleomagnetic investigations on the pleistocene lacustrine sequence of piànico-sèllere (northern italy)
|
piànico sèllere lacustrine succession northern records climatic pleistocene glacial stages. intervening interglacial preserved varves calcitic summer clastic winter laminae. tight lithologic susceptibility paleomagnetic retrieved lithologies largely diamagnetic calcite varves. delineate polarity reversals interpreted record excursions earth’s field. magnetostratigraphic controversy piànico formation. piànico magnetostratigraphy correlates geomagnetic excursions brunhes matuyama piànico interglacial correlates marine isotope option substantially radiometric tepha interbedded piànico formation. option piànico interglacial correlative marine isotope brunhes chron tephrochronological dating magnetostratigraphic
|
exact_dup
|
[
"41149987"
] |
42593684
|
10.1038/mi.2015.137
|
Human rhinovirus (HRV) infections are major contributors to the healthcare burden associated with acute exacerbations of chronic airway disease, such as chronic obstructive pulmonary disease and asthma. Cellular responses to HRV are mediated through pattern recognition receptors that may in part signal from membrane microdomains. We previously found Toll-like receptor signaling is reduced, by targeting membrane microdomains with a specific liposomal phosphatidylserine species, 1-stearoyl-2-arachidonoyl-sn-glycero-3-phospho-L-serine (SAPS). Here we explored the ability of this approach to target a clinically important pathogen. We determined the biochemical and biophysical properties and stability of SAPS liposomes and studied their ability to modulate rhinovirus-induced inflammation, measured by cytokine production, and rhinovirus replication in both immortalized and normal primary bronchial epithelial cells. SAPS liposomes rapidly partitioned throughout the plasma membrane and internal cellular membranes of epithelial cells. Uptake of liposomes did not cause cell death, but was associated with markedly reduced inflammatory responses to rhinovirus, at the expense of only modest non-significant increases in viral replication, and without impairment of interferon receptor signaling. Thus using liposomes of phosphatidylserine to target membrane microdomains is a feasible mechanism for modulating rhinovirus-induced signaling, and potentially a prototypic new therapy for viral-mediated inflammation.Mucosal Immunology advance online publication, 24 February 2016; doi:10.1038/mi.2015.137
|
Human rhinovirus-induced inflammatory responses are inhibited by phosphatidylserine containing liposomes
|
human rhinovirus-induced inflammatory responses are inhibited by phosphatidylserine containing liposomes
|
rhinovirus infections contributors healthcare burden exacerbations airway obstructive pulmonary asthma. recognition receptors microdomains. toll targeting microdomains liposomal phosphatidylserine stearoyl arachidonoyl glycero phospho serine saps explored clinically pathogen. biochemical biophysical saps liposomes modulate rhinovirus inflammation cytokine rhinovirus replication immortalized bronchial epithelial cells. saps liposomes rapidly partitioned membranes epithelial cells. uptake liposomes markedly inflammatory rhinovirus expense modest viral replication impairment interferon signaling. liposomes phosphatidylserine microdomains feasible modulating rhinovirus potentially prototypic viral inflammation.mucosal immunology advance publication february
|
exact_dup
|
[
"77015874"
] |
44738398
|
10.1088/1748-9326/11/12/120205
|
One of the 'grand challenges' of this age is the anthropogenic impact exerted on the nitrogen cycle. Issues of concern range from an excess of fixed nitrogen resulting in environmental pressures for some regions, while for other regions insufficient fixed nitrogen affects food security and may lead to health risks. To address these issues, nitrogen needs to be managed in an integrated fashion, at a variety of scales (from global to local). Such management has to be based on a thorough understanding of the sources of reactive nitrogen released into the environment, its deposition and effects. This requires a comprehensive assessment of the key drivers of changes in the nitrogen cycle both spatially, at the field, regional and global scale and over time. In this focus issue, we address the challenges of managing reactive nitrogen in the context of food production and its impacts on human and ecosystem health. In addition, we discuss the scope for and design of management approaches in regions with too much and too little nitrogen. This focus issue includes several contributions from authors who participated at the N2013 conference in Kampala in November 2013, where delegates compiled and agreed upon the 'Kampala Statement-for-Action on Reactive Nitrogen in Africa and Globally'. These contributions further underline scientifically the claims of the 'Kampala Statement', that simultaneously reducing pollution and increasing nitrogen available in the food system, by improved nitrogen management offers win-wins for environment, health and food security in both developing and developed economies. The specific messages conveyed in the Kampala Statement focus on improving nitrogen management (I), including the reduction of nitrogen losses from agriculture, industry, transport and energy sectors, as well as improving waste treatment and informing individuals and institutions (II). Highlighting the need for innovation and increased awareness among stakeholders (III) and the identification of policy and technology solutions to tackle global nitrogen management issues (IV), this will enable countries to fulfil their regional and global commitments
|
Synthesis and review: Tackling the nitrogen management challenge: from global to local scales
|
synthesis and review: tackling the nitrogen management challenge: from global to local scales
|
grand challenges anthropogenic exerted nitrogen cycle. concern excess nitrogen pressures insufficient nitrogen affects security risks. nitrogen managed fashion thorough reactive nitrogen released deposition effects. comprehensive drivers nitrogen spatially time. challenges managing reactive nitrogen impacts ecosystem health. scope nitrogen. participated kampala november delegates compiled agreed kampala statement reactive nitrogen africa globally underline scientifically claims kampala statement simultaneously reducing pollution nitrogen nitrogen offers wins security economies. messages conveyed kampala statement improving nitrogen nitrogen losses agriculture sectors improving waste informing institutions highlighting innovation awareness stakeholders tackle nitrogen enable fulfil commitments
|
exact_dup
|
[
"76972489"
] |
46756530
|
10.1103/PhysRevD.91.072005
|
International audienceThe standard three-neutrino oscillation paradigm, associated with small squared mass splittings Δm 2 ≪ 0.1 eV 2 , has been successfully built up over the last 15 years using solar, atmospheric, long baseline accelerator and reactor neutrino experiments. However, this well-established picture might suffer from anomalous results reported at very short baselines in some of these experiments. If not experimental artifacts, such results could possibly be interpreted as the existence of at least an additional fourth sterile neutrino species, mixing with the known active flavors with an associated mass splitting Δm 2 new ≫ 0.01 eV 2 and being insensitive to standard weak interactions. Precision measurements at very short baselines (5–15 m) with intense MeV ¯ ν e emitters can be used to probe these anomalies. In this article, the expected ¯ ν e signal and backgrounds of a generic experiment which consists of deploying an intense β − radioactive source inside or in the vicinity of a large liquid scintillator detector are studied. The technical challenges to perform such an experiment are identified, along with quantifying the possible source-and detector-induced systematics and their impact on the sensitivity to the observation of neutrino oscillations at short baselines
|
Experimental parameters for a Cerium 144 based intense electron antineutrino generator experiment at very short baselines
|
experimental parameters for a cerium 144 based intense electron antineutrino generator experiment at very short baselines
|
audiencethe oscillation paradigm squared splittings successfully built accelerator reactor experiments. picture suffer anomalous baselines experiments. artifacts possibly interpreted fourth sterile flavors splitting insensitive interactions. precision baselines intense emitters anomalies. backgrounds generic deploying intense radioactive vicinity scintillator studied. challenges quantifying systematics oscillations baselines
|
exact_dup
|
[
"47089825",
"52660339",
"52677236"
] |
46759988
|
10.1051/epjconf/20136204001
|
International audienceThe potential energy of heavy nuclei has been calculated in the quasimolecular shape path from a generalized liquid drop model including the proximity energy, the charge and mass asymmetries and the microscopic corrections. The potential barriers are multiple-humped. The second maximum is the saddle-point. It corresponds to the transition from compact one-body shapes with a deep neck to two touching ellipsoids. The scission point lies at the end of an energy plateau well below the saddle-point and where the effects of the nuclear attractive forces between two separated fragments vanish. The energy on this plateau is the sum of the kinetic and excitation energies of the fragments. The shell and pairing corrections play an essential role to select the most probable fission path. The potential barrier heights agree with the experimental data and the theoretical half-lives follow the trend of the experimental values. A third peak and a shallow third minimum appear in asymmetric decay paths when one fragment is close to a double magic quasi-spherical nucleus, while the smaller one changes from oblate to prolate shapes
|
Fission of actinides through quasimolecular shapes
|
fission of actinides through quasimolecular shapes
|
audiencethe nuclei quasimolecular drop proximity asymmetries microscopic corrections. barriers humped. saddle point. shapes neck touching ellipsoids. scission lies plateau saddle attractive forces separated fragments vanish. plateau fragments. pairing select probable fission path. barrier heights agree lives values. shallow asymmetric paths fragment magic quasi spherical nucleus oblate prolate shapes
|
exact_dup
|
[
"50615600",
"53003282"
] |
46774847
|
10.1103/PhysRevC.78.015204
|
Submitted to Physical Review CWe present a relativistic chiral effective theory for symmetric and asymmetric nuclear matter taken in the Hartree-Fock scheme. The nuclear binding is insured by a background chiral invariant scalar field associated with the radial fluctuations of the chiral quark condensate. Nuclear matter saturation is obtained once the scalar response of the nucleon generating three-body repulsive forces is incorporated. For these parameters related to the scalar sector and quark confinement mechanism inside the nucleon we make use of an analysis of lattice results on the nucleon mass evolution with the quark mass. The other parameters are constrained as most as possible by standard hadron and nuclear phenomenology. Special attention is paid to the treatment of the propagation of the scalar fluctuations. The rearrangement terms associated with in-medium modified mass and coupling constants are explicitly included to satisfy the Hugenholtz -Van Hove theorem. We point out the important role of the tensor piece of the rho exchange Fock term to reproduce the asymmetry energy of nuclear matter. We also discuss the isospin dependence of the Landau nucleon effective mass
|
Relativistic Chiral Hartree-Fock description of nuclear matter with constraints from nucleon structure and confinement
|
relativistic chiral hartree-fock description of nuclear matter with constraints from nucleon structure and confinement
|
submitted relativistic chiral asymmetric hartree fock scheme. insured chiral chiral condensate. saturation nucleon generating repulsive forces incorporated. confinement nucleon nucleon mass. constrained hadron phenomenology. paid propagation fluctuations. rearrangement explicitly satisfy hugenholtz hove theorem. piece fock reproduce asymmetry matter. isospin landau nucleon
|
exact_dup
|
[
"152233542"
] |
46779995
|
10.1051/anphys:2005005
|
In this work the general theory of first order phase transitions in finite systems is discussed, with a special emphasis to the conceptual problems linked to a thermodynamic description for small, short-lived systems de-exciting in the vacuum as nuclear samples coming from heavy ion collisions. After a short review of the general theory of phase transitions in the framework of information theory, we will present the different possible extensions to the field of finite systems. The concept of negative heat capacity, developed in the early seventies in the context of self-gravitating systems, will be reinterpreted in the general framework of convexity anomalies of thermostatistical potentials. The connection with the distribution of the order parameter will lead us to a definition of first order phase transitions in finite systems based on topology anomalies of the event distribution in the space of observations. A careful study of the thermodynamic limit will provide a bridge with the standard theory of phase transitions and show that in a wide class of physical situations the different statistical ensembles are irreducibly inequivalent. In the second part of the paper we will apply the theoretical ideas developed in the first part to the possible observation of a liquid-to-gas-like phase transition in heavy ion collisions. The applicability of equilibrium concepts in a dynamical collisional process without boundary conditions will first be critically discussed. The observation of abnormally large partial energy fluctuations in carefully selected samples of collisions detected with the MULTICS-Miniball and INDRA array will then be reported as a strong evidence of a first order phase transition with negative heat capacity in the nuclear equation of state
|
Phase coexistence in nuclei
|
phase coexistence in nuclei
|
emphasis conceptual thermodynamic lived exciting coming collisions. extensions systems. seventies gravitating reinterpreted convexity anomalies thermostatistical potentials. connection topology anomalies observations. careful thermodynamic bridge situations ensembles irreducibly inequivalent. ideas collisions. applicability concepts collisional critically discussed. abnormally carefully collisions multics miniball indra array
|
exact_dup
|
[
"152372100"
] |
46781157
|
10.1016/j.nimb.2006.03.034
|
ACEIn this paper, the role of air humidity on the iron corrosion under irradiation is studied in the context of geological disposal of nuclear wastes. The irradiation experiments are performed at room temperature using a 3 MeV extracted proton beam with a 10 nA intensity. Different atmospheres are studied: Humid air with a relative humidity (RH) fixed at 45 %, dry air and a $^{15}N_2$ atmosphere (45% RH). The hydrogen and oxygen distribution profiles at the iron surface in contact with atmosphere are measured by using respectively ERDA (Elastic Recoil Detection Analysis) and RBS (Rutherford Backscattering Spectrometry) analysis. From these experiments it is clearly demonstrated that the coupling of O$_2$+H$_2$O enhances iron oxidation whereas for iron hydrogenation, humidity is sufficient whatever the atmosphere. An interpretation is given, which is based on the reaction mechanisms and the species formed by air ionisation
|
Ion beam analysis of the effect of O$_2$ and H$_2$O on the oxidation of iron under irradiation
|
ion beam analysis of the effect of o$_2$ and h$_2$o on the oxidation of iron under irradiation
|
acein humidity iron corrosion irradiation geological disposal wastes. irradiation room proton intensity. atmospheres humid humidity atmosphere iron atmosphere erda elastic recoil rutherford backscattering spectrometry analysis. enhances iron oxidation iron hydrogenation humidity whatever atmosphere. ionisation
|
exact_dup
|
[
"152386274"
] |
47091398
|
10.1007/978-3-319-08590-6_13
|
International audienceThis paper introduces ConQuR-Bio which aims at assisting scientists when they query public biological databases. Various reformu-lations of the user query are generated using medical terminologies. Such alternative reformulations are then used to rank the query results using a new consensus ranking strategy. The originality of our approach thus lies in using consensus ranking techniques within the context of query reformulation. The ConQuR-Bio system is able to query the Entrez-Gene NCBI database. Our experiments demonstrate the benefit of using ConQuR-Bio compared to what is currently provided to users. ConQuR-Bio is available to the bioinformatics community at http://conqur-bio.lri.fr
|
ConQuR-Bio: Consensus Ranking with Query Reformulation for Biological Data
|
conqur-bio: consensus ranking with query reformulation for biological data
|
audiencethis introduces conqur aims assisting scientists query databases. reformu lations query terminologies. reformulations query consensus ranking strategy. originality lies consensus ranking query reformulation. conqur query entrez ncbi database. benefit conqur users. conqur bioinformatics conqur
|
exact_dup
|
[
"52193360",
"52898662"
] |
47099786
|
10.1016/j.jms.2008.12.008
|
International audienceIn an early study [Tran H, Jacquemart D, Mandin JY, Lacome N, JQSRT 2008;109:119-31], line mixing effects of the 6 band of methyl bromide were observed and modeled at room temperature. In the present work, line mixing effects have been considered at low temperatures using state-to-state collisional rates which were modeled by a fitting law based on the energy gap and a few fitting parameters. To validate the model, several spectra of methyl bromide perturbed by nitrogen have been recorded at various temperatures (205-299K) and pressures (230-825 hPa). Comparisons between measured spectra and calculations using both direct calculation from relaxation operator and Rosenkranz profile have been performed showing improvement compared to the usual Lorentz profile. Note that the temperature dependence of the spectroscopic parameters has been taken into account using results of previous studies
|
Line mixing calculation in the nu6 Q-branches of N2-broadened CH3Br at low temperatures
|
line mixing calculation in the nu6 q-branches of n2-broadened ch3br at low temperatures
|
audiencein tran jacquemart mandin lacome jqsrt methyl bromide modeled room temperature. collisional modeled fitting fitting parameters. validate methyl bromide perturbed nitrogen pressures comparisons relaxation rosenkranz usual lorentz profile. spectroscopic
|
exact_dup
|
[
"52728252"
] |
47104119
|
10.1016/j.crte.2011.09.006
|
International audienceLake Pavin is a deep meromictic lake. Its water column is divided into two parts: the mixolimnion, which is subjected to mixing during seasonal overturns; and the monimolimnion which remains unmixed. Using high precision and high frequency temperature and conductivity profiles along with continuous temperature measurements, this study reveals the presence of a sublacustrine, intermittent cold spring at the bottom of the mixolimnion at a depth between 50 and 55 m. This cold-water input rises in the water column by saline convection. The use of a simple conceptual model, representing turbulent diapycnal diffusivity and convection correlated with the presence of the spring within the water column indicates its role in maintaining the meromixis characteristic of the lake on the intra-annual time scale. The spring also influences seasonal overturns and thus contributes to establish the depth of the mixolimnion-monimolimnion interface on the inter-annual time scale
|
Maintaining meromixis in Lake Pavin (Auvergne, France): the key role of a sublacustrine spring
|
maintaining meromixis in lake pavin (auvergne, france): the key role of a sublacustrine spring
|
audiencelake pavin meromictic lake. divided mixolimnion subjected seasonal overturns monimolimnion unmixed. precision conductivity reveals sublacustrine intermittent cold spring mixolimnion cold rises saline convection. conceptual representing turbulent diapycnal diffusivity convection spring maintaining meromixis lake intra scale. spring influences seasonal overturns contributes establish mixolimnion monimolimnion
|
exact_dup
|
[
"48342531",
"51229144",
"52731748"
] |
47107475
|
10.1016/j.ijantimicag.2009.02.014
|
International audienceWhipple's disease (WD) is a chronic infection caused by . A 1-year treatment of oral trimethoprim/sulphamethoxazole (SXT) is commonly used. Advances in the culture of has allowed for full genome sequencing and antibiotic susceptibility testing, which has demonstrated resistance of to trimethoprim. Several mutations in the gene that encodes dihydropteroate synthase, the target of sulphonamides, has been reported for one patient with clinically acquired resistance to SXT. Here we report three new patients who experienced clinically acquired resistance to SXT during treatment and one patient with biological failure. Sixty-two sequences from DNA samples of 59 WD patients were also obtained. Among the detected amino acid changes, two positions (N4S and S234F) significantly predicted secondary sulphamethoxazole failure (four of five). We suggest that these mutations should be detected at the time of WD diagnosis by sequencing in order to avoid sulphamethoxazole monotherapy
|
Resistance to trimethoprim/sulphamethoxazole and
|
resistance to trimethoprim/sulphamethoxazole and
|
audiencewhipple oral trimethoprim sulphamethoxazole commonly used. advances sequencing antibiotic susceptibility trimethoprim. encodes dihydropteroate synthase sulphonamides clinically acquired sxt. experienced clinically acquired failure. sixty obtained. sulphamethoxazole sequencing avoid sulphamethoxazole monotherapy
|
exact_dup
|
[
"52452139"
] |
47307298
|
10.1007/978-3-642-55355-4_25
|
Part 5: Modelling and SimulationInternational audienceThe supply chain coordination has abstracted more and more attention from industries and academics. This paper studies a Bayesian combination forecasting model to integrate multiple forecasting resources and coordinate forecasting process among partners in retail supply chain. The simulation results based on the retail sales data show the effectiveness of this Bayesian combination forecasting model to coordinate the collaborative forecasting process. This Bayesian combination forecasting model can improve demand forecasting accuracy of supply chain
|
A Combining Forecasting Modeling and Its Application
|
a combining forecasting modeling and its application
|
simulationinternational audiencethe supply coordination abstracted industries academics. bayesian forecasting integrate forecasting coordinate forecasting partners retail supply chain. retail sales effectiveness bayesian forecasting coordinate collaborative forecasting process. bayesian forecasting forecasting supply
|
exact_dup
|
[
"47347543"
] |
47313668
|
10.1080/17419166.2015.1036238
|
International audienceIn Lebanon, the Arab uprising is often analyzed through the lens of the side effects the Syrian uprising had on the country thanks to massive refugees influx and the involvement of Sunni and Shia Lebanese in Syria ' s battleground. In fact , popular mobilizations happened prior and during the current crisis as two different type of effects of the Arab uprisings at large. First , in late 2010 emerged an anti-sectarian movement that brought up an anti-system claim in line with other Arab social movements targeting authoritarian regimes and corruption. Second , the Sunni radical mobilization that started in Saida in 2011 around the popular Imam Sheikh Assir , gathered resentments toward the Shia leading party Hizbullah as involved alongside the Syrian regime and surprisingly adopting an active minority mobilization strategy. Both movement conducted demonstrations of different type (from classic march to on roads sit-in) starting from a completely opposite perspective and in a very different environment : when the anti-sectarian mobilization faded , the sectarian one rose. This paper will try to address the historical process of both mobilizations and assess their differences in light of several mobilization theories. It intends to raise questions about the type of actors involved , their discourses and justifications , and the contextual local and political environments
|
Popular mobilisations in Lebanon: from anti-system to sectarian claims
|
popular mobilisations in lebanon: from anti-system to sectarian claims
|
audiencein lebanon arab uprising lens syrian uprising thanks massive refugees influx involvement sunni shia lebanese syria battleground. popular mobilizations happened crisis arab uprisings large. emerged sectarian movement brought system claim arab movements targeting authoritarian regimes corruption. sunni radical mobilization started saida popular imam sheikh assir gathered resentments toward shia party hizbullah alongside syrian surprisingly adopting minority mobilization strategy. movement demonstrations classic roads opposite perspective sectarian mobilization faded sectarian rose. historical mobilizations mobilization theories. intends raise actors discourses justifications contextual environments
|
exact_dup
|
[
"47355043",
"51932234"
] |
47771919
|
10.1007/s11135-012-9667-6
|
Online 21 janvier 2012Document de travailInternational audienceSome research questions involve several dimensions. The most rewarding approach may be switching (under control) between the diverse methods and databases involved. Having recourse to different dimensions that form a system produces wider results but also opens up new questions. A survey on the evolutions of social networks and life transitions of young people draws an original design including contextual names generators, questionnaires and interviews in a longitudinal perspective. Young people interviewed every 3 years on 4 survey waves produced a total of 287 interviews and networks and a global amount of 10,804 relationships informed. This article aims to highlight this specific potential of integrating qualitative, qantitative and structural dimensions in an iterative process of data construction and analysis. The methodological argument is empirically illustrated with a focus on the thematic of influence of the network upon life orientations. It shows influence comes mainly from strong central ties but also from some peripheral isolated mates. The structural evolution reveals a general trend of dissociation of their ties the ones from the others when people are entering adult life, which makes influence from the network become more and more diversified
|
Combining qualitative, quantitative and structural dimensions in a longitudinal perspective. The case of network influence.
|
combining qualitative, quantitative and structural dimensions in a longitudinal perspective. the case of network influence.
|
janvier document travailinternational audiencesome involve dimensions. rewarding switching diverse databases involved. recourse produces wider opens questions. evolutions draws contextual names generators questionnaires interviews longitudinal perspective. interviewed interviews informed. aims highlight integrating qualitative qantitative iterative analysis. methodological argument empirically illustrated thematic orientations. comes ties peripheral mates. reveals dissociation ties entering diversified
|
exact_dup
|
[
"47808119",
"52453610"
] |
48147955
|
10.1016/j.matpur.2017.05.021
|
International audienceWe prove existence and regularity of optimal shapes for the problem$$\min\Big\{P(\Omega)+\mathcal{G}(\Omega):\ \Omega\subset D,\ |\Omega|=m\Big\},$$where $P$ denotes the perimeter, $|\cdot|$ is the volume, and the functional $\mathcal{G}$ is either one of the following:<ul><li> the Dirichlet energy $E_f$, with respect to a (possibly sign-changing) function $f\in L^p$;</li><li>a spectral functional of the form $F(\lambda_{1},\dots,\lambda_{k})$, where $\lambda_k$ is the $k$th eigenvalue of the Dirichlet Laplacian and $F:\mathbb{R}^k\to\mathbb{R}$ is Lipschitz continuous and increasing in each variable.</li></ul>The domain $D$ is the whole space $\mathbb{R}^d$ or a bounded domain. We also give general assumptions on the functional $\mathcal{G}$ so that the result remains valid
|
Regularity of Minimizers of Shape Optimization Problems involving Perimeter
|
regularity of minimizers of shape optimization problems involving perimeter
|
audiencewe regularity shapes omega mathcal omega omega omega perimeter cdot mathcal dirichlet possibly changing lambda dots lambda lambda eigenvalue dirichlet laplacian mathbb mathbb lipschitz variable. mathbb domain. assumptions mathcal valid
|
exact_dup
|
[
"51930509",
"52293937"
] |
48152926
|
10.1063/1.4947100
|
International audienceThis paper presents a characterization method for extracting the reflection coefficient of materials and the real part of their permittivity. The characterization is performed in a real environment, as opposed to the classical measurement methods that require an anechoic chamber. In order to reduce the effects of the multipath propagation, a free space bistatic measurement was performed at different distances Material-Antennas in far field. By using a Teflon sample and a commercial absorbing material sample, measurements have been performed in order to validate the characterization technique
|
Method for material characterization in a non-anechoic environment
|
method for material characterization in a non-anechoic environment
|
audiencethis presents extracting reflection permittivity. opposed anechoic chamber. multipath propagation bistatic distances antennas field. teflon commercial absorbing validate
|
exact_dup
|
[
"52992602"
] |
48162348
|
10.1002/jnm.638
|
International audiencePractical three-dimensional magnetic field problems usually involve regions containing current sources as well as regions with magnetic materials. For computational purposes, the use of the reduced scalar potential (RSP) as unknown has the advantage to transform a problem for a vector field throughout the space into a problem for a scalar function, thus reducing the number of degrees of freedom in the discretization. However, in regions with high magnetic permeability the use of the RSP alone usually results in severe loss in accuracy and it is recommended to use both the RSP and the total scalar potential. Using an asymptotic expansion, we investigate theoretically the underlying reasons for this lack of accuracy in permeable regions when using the RSP as a unique potential. Moreover, this investigation leads to an efficient numerical method to compute the magnetic field in regions with high magnetic permeability
|
The reduced scalar potential in regions with permeable materials: Reasons for loss of accuracy and cancellation
|
the reduced scalar potential in regions with permeable materials: reasons for loss of accuracy and cancellation
|
audiencepractical involve materials. purposes unknown advantage transform reducing freedom discretization. permeability recommended potential. asymptotic theoretically reasons permeable potential. permeability
|
exact_dup
|
[
"52636711"
] |
48180644
|
10.1007/s11277-014-2238-5
|
International audienceIn this paper, an evaluation of transmit beamforming (TxBF) contribution is analyzed in the context of an indoor residential environment. Using an optimized 3D ray tracing tool, the multiple-input multiple-output (MIMO) propagation channel is simulated. The algorithm of singular value decomposition is applied and a new transmission scheme is considered. Comparisons of cases with/without TxBF are realized by analyzing the received power, the signal to noise ratio (íµí±íµí±íµí±
) of each spatial stream and the channel capacity. It is shown that the TxBF capacity gain increases when the MIMO channel correlation at the transmit side reaches high values, especially when only the dominant eigen mode is selected. The main result concerns the antenna spacing: a judicious choice of the transmitting antenna spacing can improve the effective transmission range by more than 45% in non-line of sight (NLOS) conditions. Several MIMO configurations (number of antennas and spatial streams) are also compared to determine the relevance of a possible activation of TxBF. The interference influence is studied and it is shown that under some conditions, TxBF improves the signal to interference ratio (SIR)
|
Transmit Beamforming Analysis for MIMO Systems in Indoor Residential Environment Based on 3D Ray Tracing
|
transmit beamforming analysis for mimo systems in indoor residential environment based on 3d ray tracing
|
audiencein transmit beamforming txbf indoor residential environment. optimized tracing mimo propagation simulated. singular decomposition considered. comparisons txbf realized analyzing íµí±íµí±íµí± stream capacity. txbf mimo transmit reaches eigen selected. concerns antenna spacing judicious transmitting antenna spacing sight nlos conditions. mimo configurations antennas streams relevance txbf. interference txbf improves interference
|
exact_dup
|
[
"52998070"
] |
48233543
|
10.1007/978-3-642-23400-2_46
|
International audienceWith Infrastructure-as-a-Service (IaaS) cloud economics getting increasingly complex and dynamic, resource costs can vary greatly over short periods of time. Therefore, a critical issue is the ability to deploy, boot and terminate VMs very quickly, which enables cloud users to exploit elasticity to find the optimal trade-off between the computational needs (number of resources, usage time) and budget constraints. This paper proposes an adaptive prefetching mechanism aiming to reduce the time required to simultaneously boot a large number of VM instances on clouds from the same initial VM image (multi-deployment). Our proposal does not require any foreknowledge of the exact access pattern. It dynamically adapts to it at run time, enabling the slower instances to learn from the experience of the faster ones. Since all booting instances typically access only a small part of the virtual image along almost the same pattern, the required data can be pre-fetched in the background. Large scale experiments under concurrency on hundreds of nodes show that introducing such a prefetching mechanism can achieve a speed-up of up to 35% when compared to simple on-demand fetching
|
Optimizing multi-deployment on clouds by means of self-adaptive prefetching
|
optimizing multi-deployment on clouds by means of self-adaptive prefetching
|
audiencewith infrastructure iaas economics getting increasingly resource vary greatly time. deploy boot terminate quickly enables exploit elasticity trade usage budget constraints. proposes adaptive prefetching aiming simultaneously boot instances clouds deployment proposal foreknowledge pattern. dynamically adapts enabling slower instances learn faster ones. booting instances virtual fetched background. concurrency hundreds introducing prefetching fetching
|
exact_dup
|
[
"51216939"
] |
48247787
|
10.1093/bioinformatics/btp586
|
This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Bioinformatics following peer review. The definitive publisher-authenticated version [Rousseau, C., Gonnet, M., Le Romancer, M., Nicolas, J. (2009). CRISPI: a CRISPR Interactive database.Bioinformatics. 25(24):3317-3318] is available online at: http://bioinformatics.oxfordjournals.org/.International audienceThe CRISPR genomic structures (Clustered Regularly Interspaced Short Palindromic Repeats) form a family of repeats that is largely present in archaea and frequent in bacteria. On the basis of a formal model of CRISPR using very few parameters, a systematic study of all their occurrences in all available genomes of Archaea and Bacteria has been carried out. This has resulted in a relational database, CRISPI, which also includes a complete repertory of associated CRISPR-associated genes (CAS). A userfriendly web interface with many graphical tools and functions allows users to extract results, find CRISPR in personal sequences or calculate sequence similarity with spacers
|
CRISPI: a CRISPR Interactive database
|
crispi: a crispr interactive database
|
copy editing publication bioinformatics peer review. definitive publisher authenticated rousseau gonnet romancer nicolas crispi crispr interactive database.bioinformatics. .international audiencethe crispr genomic clustered regularly interspaced palindromic repeats repeats largely archaea frequent bacteria. formal crispr occurrences genomes archaea bacteria out. resulted relational crispi repertory crispr userfriendly graphical extract crispr personal similarity spacers
|
exact_dup
|
[
"52695717",
"52856180"
] |
48270319
|
10.1016/S1342-937X(05)70258-6
|
International audienceLithological and structural maps from the East Commonwealth Bay Unit (ECB; Terre Adélie and Georges V land, Antarctica) are presented with a summary of the main structural and metamorphic data obtained in the area. The ECB unit is structured during the Late Archean – Lower Proterozoic (at 2.4-2.5 Ga), with (i) granulite metamorphism at 9 - 6 kbar and 850 ± 50 °C of lower-mid crust and amphibolite metamorphism (P ≤ 5 kbar, T ≤ 750°C) of the upper crustal levels. (ii) The lower crustal granulites are uplifted, and suffered local partial melting and then retrogression into the amphibolite facies at 550 ± 50°C – 5 kbar. Granulites are extruded in the core of a crustal-scale anticlinal fold, granulites being retrogressed only on the rims of the anticline. Crustal-scale folding, along with other structural features results from intense NE-SW shortening, that prevailed during the Late Archean orogenic cycle. Strike-slip and extensive motions are only minor in that process. (iii), Top-to-the-East thrusting and nappe piling has (at least locally) occurred under lower amphibolite to greenschist facies conditions. Finally, it seems that (iv) the Paleoproterozoic 1.7 Ga structural imprint may have only affected the rims of the Archean units. The tectonic context observed in the 1.7 Ga Cape Hunter phyllites features mainly E-W shortening component and vertical extrusion. The Eastern (Mertz) and Western (Port Martin) parts of the Archean block were reactivated by localized dextral shearing
|
Structural setting of the neo archean terrains in the Commonwealth Bay area (143°-145°E), Terre Adélie Craton, East Antarctica.
|
structural setting of the neo archean terrains in the commonwealth bay area (143°-145°e), terre adélie craton, east antarctica.
|
audiencelithological east commonwealth terre adélie georges antarctica metamorphic area. structured archean proterozoic granulite metamorphism kbar crust amphibolite metamorphism kbar crustal levels. crustal granulites uplifted suffered melting retrogression amphibolite facies kbar. granulites extruded crustal anticlinal granulites retrogressed rims anticline. crustal folding intense shortening prevailed archean orogenic cycle. strike slip extensive motions minor process. east thrusting nappe piling locally occurred amphibolite greenschist facies conditions. paleoproterozoic imprint rims archean units. tectonic cape hunter phyllites shortening extrusion. eastern mertz port martin archean reactivated localized dextral shearing
|
exact_dup
|
[
"47312541",
"49303134",
"52659003",
"52765641",
"52793869"
] |
49293898
|
10.1088/0957-4484/22/39/395501
|
International audienceStructural health monitoring of porous materials such as concrete is becoming a major component in our resource-limited economy, as it conditions durable exploitation of existing facilities. Durability in porous materials depends on nanoscale features which need to be monitored in situ with nanometric resolution. To address this problem, we put forward an approach based on the development of a new nanosensor, namely a capacitive micrometric ultrasonic transducer whose vibrating membrane is made of aligned single-walled carbon nanotubes (SWNT). Such sensors are meant to be embedded in large numbers within a porous material in order to provide information on its durability by monitoring in situ neighboring individual micropores. In the present paper, we report on the feasibility of the key building block of the proposed sensor: we have fabricated well-aligned, ultra-thin, dense SWNT membranes that show above-nanometer amplitudes of vibration over a large range of frequencies spanning from 100 kHz to 5 MHz
|
Aligned carbon nanotube based ultrasonic microtransducers for durability monitoring in civil engineering
|
aligned carbon nanotube based ultrasonic microtransducers for durability monitoring in civil engineering
|
audiencestructural porous concrete becoming resource economy durable exploitation facilities. durability porous nanoscale monitored situ nanometric resolution. nanosensor capacitive micrometric ultrasonic transducer vibrating aligned walled nanotubes swnt sensors meant embedded porous durability situ neighboring micropores. feasibility sensor fabricated aligned ultra dense swnt membranes nanometer amplitudes vibration spanning
|
exact_dup
|
[
"51216097",
"52688138"
] |
50614549
|
10.1007/s11590-016-1043-3
|
International audienceWe study a 0-1 knapsack problem, in which the objective value is forbidden to take some values. We call gaps related forbidden intervals. The problem is NP-hard and pseudo-polynomially solvable independently on the measure of gaps. If the gaps are large, then the problem is polynomially non-approximable. A non-trivial special case with respect to the approximate solution appears when the gaps are small and polynomially close to zero. For this case, two fully polynomial time approximation schemes are proposed. The results can be extended for the constrained longest path problem and other combinatorial problems
|
Knapsack problem with objective value gaps
|
knapsack problem with objective value gaps
|
audiencewe knapsack forbidden values. call gaps forbidden intervals. pseudo polynomially solvable independently gaps. gaps polynomially approximable. trivial approximate gaps polynomially zero. schemes proposed. constrained longest combinatorial
|
exact_dup
|
[
"49267918",
"52992854"
] |
50616249
|
10.1016/j.radphyschem.2012.07.010
|
Radiation chemical primary yields g(H2) have been determined for irradiations performed with 60Co γ-rays source of LCP (Orsay, France) and with helium ion beams (Eα=5.0 MeV-64.7 MeV) using protective agent bromide anions in solution. The α (4He2+) irradiation experiments were performed either at CEMHTI or at the new ARRONAX cyclotron facility (2010). Both sources (γ and cyclotrons) allow working with a large LET value range between 0.23 and 151.5 keV/μm. On one hand, the obtained results have been compared with those available in the literature and plotted as a function of the LET parameter in order to discuss the effects of track structure on the production of molecular hydrogen. On the other hand, the primary radiation chemistry yield g(H2) values are compared with global radiation chemical yields G(H2) obtained during irradiations of pure water irradiated under air or argon without scavenging. For each system, it appears that radiation chemical yields increase with the LET value. Our results suggest that using bromide anions, at low concentration, as a protective agent becomes ineffective when the LET value used is higher than 120±20 keV/μm
|
LET effects on the hydrogen production induced by the radiolysis of pure water
|
let effects on the hydrogen production induced by the radiolysis of pure water
|
irradiations rays orsay helium beams protective agent bromide anions solution. irradiation cemhti arronax cyclotron facility cyclotrons plotted track hydrogen. irradiations irradiated argon scavenging. value. bromide anions protective agent ineffective
|
exact_dup
|
[
"46763116",
"53007646"
] |
51217279
|
10.1007/978-3-642-25566-3_9
|
International audienceIn multiobjective combinatorial optimization, there exists two main classes of metaheuristics, based either on multiple aggregations, or on a dominance relation. As in the single objective case, the structure of the search space can explain the difficulty for multiobjective metaheuristics, and guide the design of such methods. In this work we analyze the properties of multiobjective combinatorial search spaces. In particular, we focus on the features related the efficient set, and we pay a particular attention to the correlation between objectives. Few benchmark takes such objective correlation into account. Here, we define a general method to design multiobjective problems with correlation. As an example, we extend the well-known multiobjective NK-landscapes. By measuring different properties of the search space, we show the importance of considering the objective correlation on the design of metaheuristics
|
Analyzing the Effect of Objective Correlation on the Efficient Set of MNK-Landscapes
|
analyzing the effect of objective correlation on the efficient set of mnk-landscapes
|
audiencein multiobjective combinatorial metaheuristics aggregations dominance relation. difficulty multiobjective metaheuristics guide methods. analyze multiobjective combinatorial spaces. objectives. benchmark account. multiobjective correlation. extend multiobjective landscapes. measuring metaheuristics
|
exact_dup
|
[
"52785981"
] |
51236121
|
10.1016/S0146-6380(00)00013-9
|
L'UMR CNRS 6531, Laboratoire de Géologie de la Matière Organique a été intégré dans l'ISTO - UMR6113 - CNRS-Université d'OrléansThree types of pathways (degradation-recondensation, natural sulphurization and selective preservation) are commonly considered for the formation of kerogen dispersed in sedimentary rocks. A fourth pathway has been recently put forward, however, from studies on Recent marine sediments, the so-called sorptive protection mechanism. This pathway is based on the adsorption of otherwise labile organic compounds onto minerals, thus preventing their diagenetic degradation and promoting their subsequent condensation into kerogen. The main results of the present study are derived from a combination of microscopic and pyrolytic methods applied on a Cenomanian kerogen. They provide (i) evidence, on an ancient material, for a crucial role of the mineral matrix both in organic matter (OM) preservation during kerogen formation and in kerogen stability once formed, (ii) indications that the dominant protective process likely involves physical protection by minerals, resulting from alternation of organic and clay nanolayers of approximately 100 nm in thickness, rather than OM adsorption as molecular monolayers and (iii) observations of the relatively poor stability of an isolated kerogen, contrary to the inertness commonly assumed for fossil macromolecular organic matter
|
Protection of organic matter by mineral matrix in a Cenomanian black shale
|
protection of organic matter by mineral matrix in a cenomanian black shale
|
cnrs laboratoire géologie matière organique intégré dans isto cnrs université orléansthree pathways degradation recondensation sulphurization selective preservation commonly kerogen dispersed sedimentary rocks. fourth marine sediments sorptive protection mechanism. adsorption labile minerals preventing diagenetic degradation promoting condensation kerogen. microscopic pyrolytic cenomanian kerogen. ancient crucial mineral preservation kerogen kerogen indications protective involves protection minerals alternation clay nanolayers adsorption monolayers kerogen contrary inertness commonly fossil macromolecular
|
exact_dup
|
[
"52764859"
] |
51934017
|
10.1063/1.2890051
|
International audienceThe optical near field of a high-Q and ultrasmall volume photonic crystal nanocavity is visualized with a subwavelength resolution by using a scanning near-field optical microscope (SNOM) operating at the same time in collection-scanning mode and in interaction-scanning mode. It is shown that the nanocavity resonant mode is selectively visualized by using the SNOM interaction-scanning mode while the whole electromagnetic field surrounding the nanocavity is probed using the SNOM collection-scanning mode. The different optical near-field images are compared in light of a three-dimensional numerical analysis and we demonstrate an unexpected mode coupling at the cavity resonance
|
Subwavelength imaging of light confinement in high-Q/small-V photonic crystal nanocavity
|
subwavelength imaging of light confinement in high-q/small-v photonic crystal nanocavity
|
audiencethe ultrasmall photonic nanocavity visualized subwavelength scanning microscope snom operating scanning scanning mode. nanocavity resonant selectively visualized snom scanning electromagnetic surrounding nanocavity probed snom scanning mode. unexpected cavity
|
exact_dup
|
[
"52672693",
"54824324"
] |
51949506
|
10.1016/j.ins.2014.06.040
|
International audienceThe paper addresses the selection of the best representations for distributed and/or dependent signals. Given an indexed tree structured library of bases and a semi-collaborative distribution scheme associated with minimum information exchange (emission and reception of one single index corresponding to a marginal best basis), the paper proposes the median basis computed on a set of best marginal bases for joint representation or fusion of distributed/dependent signals. The paper provides algorithms for computing this median basis with respect to standard tree structured libraries of bases such as wavelet packet bases or cosine trees. These algorithms are effective when an additive information cost is under consideration. Experimental results performed on distributed signal compression confirms worthwhile properties for the median of marginal best bases with respect to the ideal best joint basis, the latter being underdetermined in practice, except when a full collaboration scheme is under consideration
|
Best Basis for Joint Representation: the Median of Marginal Best Bases for Low Cost Information Exchanges in Distributed Signal Representation
|
best basis for joint representation: the median of marginal best bases for low cost information exchanges in distributed signal representation
|
audiencethe addresses representations signals. indexed structured library bases collaborative reception marginal proposes marginal bases fusion signals. structured libraries bases wavelet packet bases cosine trees. additive consideration. compression confirms worthwhile marginal bases ideal underdetermined consideration
|
exact_dup
|
[
"47277247"
] |
52047445
|
10.1016/j.aquaculture.2008.01.043
|
The influence of temporal and spatial variation in food availability on mussel meat ratio and biomass was studied in a longline mussel farm (100 m wide and 250 m long, Mytilus edulis) during an eight-month period. Current velocity and phytoplankton concentration were measured and mean mussel biomass, density, wet weight and meat ratio were determined. The longline farm aligned the current direction lengthwise through the farm and reduced the current speed and flow to approximately one half to one third of reference station. The mean fluorescence depletion in the centre of the farm was 11% and the phytoplankton concentration (cells L¯¹) was 20 to 91% less in the centre of the farm compared to the reference station. The mean meat ratio increased 1.8 times through the spring phytoplankton bloom. The mean meat ratio (%) and biomass (kg) were spatially variable through the farm with low values in the centre and increasing values towards the edges of the farm. This variation in meat ratio and biomass was observed at all natural phytoplankton concentrations and attributed to spatial variation in food availability through the farm
|
Temporal and spatial variation in food availability and meat ratio in a longline mussel farm (Mytilus edulis)
|
temporal and spatial variation in food availability and meat ratio in a longline mussel farm (mytilus edulis)
|
availability mussel meat biomass longline mussel farm mytilus edulis eight month period. phytoplankton mussel biomass meat determined. longline farm aligned lengthwise farm station. fluorescence depletion farm phytoplankton farm station. meat spring phytoplankton bloom. meat biomass spatially farm farm. meat biomass phytoplankton attributed availability farm
|
exact_dup
|
[
"30846434"
] |
52129699
|
10.1080/09692290.2015.1008547
|
This is the authors' accepted and refereed manuscript to the articleInternational security debates surrounding the European Union energy supply challenge commonly invoke the need for more EU hard power – e.g. getting tough on Russia or engaging directly with other exporters. This article investigates whether what might be labelled ‘soft power with a hard edge’ instead amounts to a consistent policy strategy for the EU. The central argument is that the EU has turned a weakness into a strength, and developed a set of tools that sharpen the way soft power is exercised in the energy sector. The article explores how soft power affects companies that ‘come and play’ on the EU market: the rules of the Single European Market and how they affect external firms. It also assesses the long reach of the SEM: both the gravitational ‘pull’ the SEM exerts in the ‘near aboard’, and the EU’s ‘push’ to facilitate the development of midstream infrastructure and upstream investment. The conclusion is that the EU regulatory state is emerging as an international energy actor in its own right. It limits the ways states like Russia can use state firms in the geopolitical game; and it exports its model into the near abroad thus stabilizing energy supply and transit routes.1, Forfatterversjo
|
Soft power with a hard edge: EU policy tools and energy security
|
soft power with a hard edge: eu policy tools and energy security
|
refereed articleinternational security debates surrounding union supply challenge commonly invoke e.g. getting tough russia engaging exporters. investigates labelled ‘soft edge’ amounts argument turned weakness sharpen exercised sector. explores affects companies ‘come play’ firms. assesses gravitational ‘pull’ exerts ‘near aboard’ eu’s ‘push’ facilitate midstream infrastructure upstream investment. regulatory emerging actor right. ways russia firms geopolitical game exports abroad stabilizing supply transit routes. forfatterversjo
|
exact_dup
|
[
"154668585"
] |
52132257
|
10.1016/j.marstruc.2016.03.002
|
Design optimization of offshore wind turbine support structures is an expensive task due to the highly-constrained, non-convex and non-linear nature of the design problem. A good depth of detail in the problem formulation can give useful insights in the practical design process, but may also compromise the efficiency. This paper presents an analytical gradient-based method to solve the problem in an effective and efficient way. The design sensitivities of the objective and constraint functions are evaluated analytically, while the optimization procedure is performed in the time domain, subjected to sizing, eigenfrequency, extreme load and fatigue load constraints. A case study on the OC4 and UpWind jacket substructures show that the method was reliable and consistent in delivering superior efficiency and accuracy in the optimization study, as compared with the conventional finite difference approach. The global optimum was probably achieved in the design optimization process, where the large number of design constraints implemented can possibly be the blessing in disguise, as they seem to enable the optimizer to find the global optimum. Both the buckling and fatigue load constraints had significant influence over the design of tubular members and joints, while each component is oriented to maximize the utilization against the prescribed limit state functions.© 2016 Published by Elsevier Ltd. Open Access
|
Analytical gradient-based optimization of offshore wind turbine substructures under fatigue and extreme loads
|
analytical gradient-based optimization of offshore wind turbine substructures under fatigue and extreme loads
|
offshore turbine expensive constrained convex problem. formulation insights practical compromise efficiency. presents solve way. sensitivities analytically subjected sizing eigenfrequency extreme fatigue constraints. upwind jacket substructures reliable delivering superior approach. optimum probably implemented possibly blessing disguise seem enable optimizer optimum. buckling fatigue tubular joints oriented maximize utilization prescribed functions.©
|
exact_dup
|
[
"154671082"
] |
52133309
|
10.1016/j.orcp.2009.04.004
|
Background:
In the complex field of treating severe obesity, motivation is receiving increased attention. This explorative study aims to highlight what influences the preferences of severely obese patients deciding for either gastric bypass surgery or lifestyle treatment.
Methods:
Patients awaiting laparoscopic gastric bypass were presented with an 18-week inpatient lifestyle programme alternative to gastric bypass. Questionnaires provided qualitative data (reasons for choosing one treatment over another) and quantitative data (mental health assessment using the Hospital Anxiety and Depression Scale). The material was analysed according to a sequential exploratory design involving thematic analysis of patients’ arguments, validation using HADS, and statistical computations (hypothesis testing) with one-way ANOVA followed by Dunnett's post hoc test.
Results:
159 participants (mean BMI 47.2 kg/m2) returned questionnaires of which 32% wanted the lifestyle treatment alternative to surgery. Reasons for choosing the two treatments varied widely as did also the corresponding data on mental health. Two subgroups stood out with particularly high mental symptom scores, namely patients choosing surgery due to reluctance to engage in social interaction in lifestyle treatment, and patients preferring lifestyle treatment due to the fear of dying during general anaesthesia. These two subgroups showed significantly higher symptom scores than other subgroups within their therapy-of-choice group. The number of comorbid diseases was also found to impact upon motivation.
Conclusions:
Patients carry different incentives for choosing the same type of treatment. On a subgroup level, psychopathological symptoms seem to follow motivational patterns. Analysing motivation and mental health may provide measures for identifying subgroups with various prospects for therapy outcome.© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0
|
Bariatric surgery or lifestyle intervention? An exploratory study of severely obese patients' motivation for two different treatments
|
bariatric surgery or lifestyle intervention? an exploratory study of severely obese patients' motivation for two different treatments
|
treating obesity motivation receiving attention. explorative aims highlight influences preferences severely obese deciding gastric bypass lifestyle treatment. awaiting laparoscopic gastric bypass week inpatient lifestyle programme gastric bypass. questionnaires qualitative reasons choosing anxiety depression analysed sequential exploratory involving thematic patients’ arguments validation hads computations anova dunnett test. returned questionnaires wanted lifestyle surgery. reasons choosing treatments varied widely health. subgroups stood symptom choosing reluctance engage lifestyle preferring lifestyle fear dying anaesthesia. subgroups symptom subgroups group. comorbid motivation. carry incentives choosing treatment. subgroup psychopathological seem motivational patterns. analysing motivation identifying subgroups prospects outcome.©
|
exact_dup
|
[
"154672115"
] |
52310410
|
10.1007/s10695-012-9720-3
|
International audienceThe aim of this study was to identify a signal that could be used as an androgen exposure indicator in the European bullhead (Cottus sp.). For this purpose, the ultra-structure of the kidney was characterized to identify normal structure of this organ, and histological changes previously described in the kidney of breeding male bullheads were quantified using the kidney epithelium height (KEH) assay previously developed and validated for the stickleback. In the next step, the effect of trenbolone acetate (TbA), a model androgen, was assessed to identify potential androgenic regulation of bullhead kidney hypertrophy. Measurement of KEH performed on adult non-breeding male and female bullheads exposed for 14 and 21 days to 0, 1.26 and 6.50 mu g/L showed that kidney hypertrophy is induced in a dose-dependent manner, confirming the hypothesis that the European bullhead possesses a potential biomarker of androgen exposure. Combined with the wide distribution of the European bullhead in European countries and the potential of this fish species for environmental toxicology studies in field and laboratory conditions, the hypothesis of a potential biomarker of androgen exposure offers interesting perspectives for the use of the bullhead as a relevant sentinel fish species in monitoring studies. Inducibility was observed with high exposure concentrations of TbA. Further studies are needed to identify molecular signals that could be more sensitive than KE
|
A potential biomarker of androgen exposure in European bullhead (Cottus sp.) kidney
|
a potential biomarker of androgen exposure in european bullhead (cottus sp.) kidney
|
audiencethe androgen indicator bullhead cottus ultra kidney organ histological kidney breeding bullheads quantified kidney epithelium validated stickleback. trenbolone acetate androgen androgenic bullhead kidney hypertrophy. breeding bullheads exposed kidney hypertrophy manner confirming bullhead possesses biomarker androgen exposure. bullhead fish toxicology biomarker androgen offers perspectives bullhead sentinel fish studies. inducibility tba.
|
exact_dup
|
[
"52669056"
] |
52450337
|
10.1002/jmv.22003
|
International audienceThe epidemiology and the clinical implication of human parvovirus 4 (PARV4) in human populations is still under evaluation. The distribution of PARV4 DNA was determined in cohorts of French haemodialysis and lung transplant patients. Plasma samples (n=289) were tested for PARV4 by real-time PCR assay (ORF2), and amplification products selected at random were sequenced. Analysis of available serological and biological markers was also undertaken. Fifty-seven samples out of 185 (30.8%) were positive for PARV4 DNA in the cohort of haemodialysis patients. A higher prevalence of the virus was identified in individuals with markers of HBV infection. PARV4 was also identified in 14 out of 104 samples (13.5%) from lung transplant recipients, with no clear-cut association with available clinical markers. Point mutations located on the zone of real-time detection were identified for some amplification products. This study describes the detection of PARV4 in the blood of haemodialysis and lung transplanted patients with significant difference in prevalence in these two cohorts. Further studies will be needed in order to understand better both the potential implication in host health and the natural history of this virus
|
Parvovirus 4 in French in-patients: a study of haemodialysis and lung transplant cohorts
|
parvovirus 4 in french in-patients: a study of haemodialysis and lung transplant cohorts
|
audiencethe epidemiology implication parvovirus parv evaluation. parv cohorts french haemodialysis transplant patients. parv amplification sequenced. serological markers undertaken. fifty seven parv cohort haemodialysis patients. prevalence markers infection. parv transplant recipients markers. amplification products. describes parv haemodialysis transplanted prevalence cohorts. implication
|
exact_dup
|
[
"47711658",
"47749182"
] |
52633283
|
10.1016/j.jvolgeores.2008.11.003
|
International audienceIn April 2007, Piton de la Fournaise volcano experienced a caldera collapse during its largest historical eruption. We present here a structural analysis both of the caldera and the surrounding area, and precise GPS data recorded with a dense GPS network specifically dedicated to the analysis of deformation related to the summit collapse structures. Despite a collapse of more than 300 m in the central zone, the geometry of the new caldera is similar in map view to that of the pre-existing collapsed structure, which was formed from the coalescence of several pit craters. The caldera shows an asymmetric inner geometry with sub-vertical walls in the NW quadrant and steep scarps composed of inward tilted blocks in the southern half. The presence of preserved polished surfaces on the lower part of the sub-vertical scarp indicates that it corresponds to the caldera north-western ring fault. The April 2007 caldera collapse led to the development and the reactivation of concentric fractures on the caldera rim, mostly along the southern limit of the caldera. GPS data show that fractures result from radial extensional stresses that are restricted within the first tens of meters of the caldera edge. GPS data also reveal that the caldera collapse was coeval with a centripetal deflation, whose magnitude is largest along the southern half of the caldera. The displacements recorded by GPS result from both a general deflation, due to magma withdrawal from Piton de la Fournaise's summit magma chamber, and additional local effects related to the caldera collapse. Comparison of the caldera collapses at Piton de la Fournaise, Miyakejima and Fernandina reveals striking similarities, with cyclic seismic signals accompanying small-scale deflation–inflation cycles. This strongly suggests a common mode of collapse. Hence, we propose a unifying model of caldera collapse in basaltic setting, in which the inward deflation due to magma withdrawal from the magma chamber prevents the collapse of the caldera roof until the gravitational stress acting on the rock column above the magma chamber exceeds the shear strength along pre-existing ring faults. The downward displacement stops when the pressure increase into the magma chamber is able to again sustain the rock column. The succession of (1) inward deflation that prevents the collapse, (2) collapse due to gravitational stress and (3) stopping of the downward motion is repeated many times. The frequency of the cycles is influenced by the rate of magma withdrawal and by the amount of intrusion of magma along the ring faults
|
How summit calderas collapse on basaltic volcanoes: New insights from the April 2007 caldera collapse of Piton de la Fournaise volcano
|
how summit calderas collapse on basaltic volcanoes: new insights from the april 2007 caldera collapse of piton de la fournaise volcano
|
audiencein april piton fournaise volcano experienced caldera collapse historical eruption. caldera surrounding precise dense dedicated deformation summit collapse structures. collapse caldera collapsed coalescence craters. caldera asymmetric walls quadrant steep scarps composed inward tilted blocks southern half. preserved polished scarp caldera fault. april caldera collapse reactivation concentric fractures caldera mostly southern caldera. fractures extensional stresses restricted tens meters caldera edge. reveal caldera collapse coeval centripetal deflation southern caldera. displacements deflation magma withdrawal piton fournaise summit magma chamber caldera collapse. caldera collapses piton fournaise miyakejima fernandina reveals striking similarities cyclic seismic accompanying deflation–inflation cycles. collapse. propose unifying caldera collapse basaltic inward deflation magma withdrawal magma chamber prevents collapse caldera roof gravitational acting rock magma chamber exceeds faults. downward displacement stops magma chamber sustain rock column. succession inward deflation prevents collapse collapse gravitational stopping downward repeated times. cycles influenced magma withdrawal intrusion magma faults
|
exact_dup
|
[
"49265904",
"52708377"
] |
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