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2,300
1909.04817
Matthew van Bommel
Matthew van Bommel, Luke Bornn, Peter Chow-White, Chuancong Gao
Home Sweet Home: Quantifying Home Court Advantages For NCAA Basketball Statistics
24 pages, 4 figures
Journal of Sports Analytics, vol. 7, no. 1, pp. 25-36, 2021
10.3233/JSA-200450
null
stat.AP
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Box score statistics are the baseline measures of performance for National Collegiate Athletic Association (NCAA) basketball. Between the 2011-2012 and 2015-2016 seasons, NCAA teams performed better at home compared to on the road in nearly all box score statistics across both genders and all three divisions. Using box score data from over 100,000 games spanning the three divisions for both women and men, we examine the factors underlying this discrepancy. The prevalence of neutral location games in the NCAA provides an additional angle through which to examine the gaps in box score statistic performance, which we believe has been underutilized in existing literature. We also estimate a regression model to quantify the home court advantages for box score statistics after controlling for other factors such as number of possessions, and team strength. Additionally, we examine the biases of scorekeepers and referees. We present evidence that scorekeepers tend to have greater home team biases when observing men compared to women, higher divisions compared to lower divisions, and stronger teams compared to weaker teams. Finally, we present statistically significant results indicating referee decisions are impacted by attendance, with larger crowds resulting in greater bias in favor of the home team.
[{'version': 'v1', 'created': 'Wed, 11 Sep 2019 02:02:30 GMT'} {'version': 'v2', 'created': 'Sat, 8 May 2021 18:57:36 GMT'}]
2021-05-11
[array(['van Bommel', 'Matthew', ''], dtype=object) array(['Bornn', 'Luke', ''], dtype=object) array(['Chow-White', 'Peter', ''], dtype=object) array(['Gao', 'Chuancong', ''], dtype=object)]
2,301
2304.05157
Wenceslao Arroyo-Machado
Daniel Torres-Salinas, Domingo Docampo, Wenceslao Arroyo-Machado, and Nicolas Robinson-Garcia
The Many Publics of Science: Using Altmetrics to Identify Common Communication Channels by Scientific field
null
null
null
null
cs.DL
http://creativecommons.org/licenses/by/4.0/
Altmetrics have led to new quantitative studies of science through social media interactions. However, there are no models of science communication that respond to the multiplicity of non-academic channels. Using the 3653 authors with the highest volume of altmetrics mentions from the main channels (Twitter, News, Facebook, Wikipedia, Blog, Policy documents, and Peer reviews) to their publications (2016-2020), it has been analyzed where the audiences of each discipline are located. The results evidence the generalities and specificities of these new communication models and the differences between areas. These findings are useful for the development of science communication policies and strategies.
[{'version': 'v1', 'created': 'Tue, 11 Apr 2023 11:47:34 GMT'}]
2023-04-12
[array(['Torres-Salinas', 'Daniel', ''], dtype=object) array(['Docampo', 'Domingo', ''], dtype=object) array(['Arroyo-Machado', 'Wenceslao', ''], dtype=object) array(['Robinson-Garcia', 'Nicolas', ''], dtype=object)]
2,302
1612.02781
Ilya Makarov A
I. A. Makarov, S.G. Ovchinnikov
Cooperative effect of doping and temperature on the polaronic band structure in strongly correlated electron systems with strong electron-phonon interaction
10 pages, 6 figures, 22 references. arXiv admin note: substantial text overlap with arXiv:1611.05836
null
null
null
cond-mat.str-el
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work we investigate doping and temperature dependences of electronic structure of system with strong electronic correlations and strong electron-phonon interaction modeling cuprates in the frameworks of the three-band p-d-Holstein model by a polaronic version of the generalized tight binding (GTB) method. Within this approach the electronic structure is formed by polaronic quasiparticles constructed as excitations between initial and final polaronic multielectron states. Doping and temperature effects are taken into account by occupation numbers of local excited polaronic states and variations in the magnitude of spin-spin correlation functions. Both effects are manifested in the reconstruction of band structure, Fermi contours, density of states and redistribution of the spectral weight over the Hubbard polaron subbands. Doping leads to transformation of Fermi contour from small hole pockets around k=(pi/2,pi/2) with inhomogeneous spectral weight distribution at small hole concentration to large contour around k=(pi,pi) in the overdoped compound as a result of two quantum phase transitions. In the system with phonon subsystem and EPI doping results in the top of the valence band splitting off and new polaron subbands appearance. Temperature increasing in the system with doped holes and moderate EPI leads to formation of the flatband around k=(pi,pi) and transfer of the spectral weight to the splitted off top of the valence band.
[{'version': 'v1', 'created': 'Thu, 8 Dec 2016 19:34:31 GMT'}]
2016-12-09
[array(['Makarov', 'I. A.', ''], dtype=object) array(['Ovchinnikov', 'S. G.', ''], dtype=object)]
2,303
1808.10105
Md Kamruzzaman Sarker
Md. Kamruzzaman Sarker, Adila A. Krisnadhi, Pascal Hitzler
OWLAx: A Protege Plugin to Support Ontology Axiomatization through Diagramming
Poster in ISWC 2016
The 15th International Semantic Web Conference (ISWC 2016) Kobe, Japan
null
null
cs.AI cs.DB
http://creativecommons.org/licenses/by/4.0/
Once the conceptual overview, in terms of a somewhat informal class diagram, has been designed in the course of engineering an ontology, the process of adding many of the appropriate logical axioms is mostly a routine task. We provide a Protege plugin which supports this task, together with a visual user interface, based on established methods for ontology design pattern modeling.
[{'version': 'v1', 'created': 'Thu, 30 Aug 2018 03:57:58 GMT'}]
2018-08-31
[array(['Sarker', 'Md. Kamruzzaman', ''], dtype=object) array(['Krisnadhi', 'Adila A.', ''], dtype=object) array(['Hitzler', 'Pascal', ''], dtype=object)]
2,304
2003.08064
Hector Galindo-Silva
Hector Galindo-Silva
Ethnic Groups' Access to State Power and Group Size
null
null
null
null
econ.GN q-fin.EC
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Many countries are ethnically diverse. However, despite the benefits of ethnic heterogeneity, ethnic-based political inequality and discrimination are pervasive. Why is this? This study suggests that part of the variation in ethnic-based political inequality depends on the relative size of ethnic groups within each country. Using group-level data for 569 ethnic groups in 175 countries from 1946 to 2017, I find evidence of an inverted-U-shaped relationship between an ethnic group's relative size and its access to power. This single-peaked relationship is robust to many alternative specifications, and a battery of robustness checks suggests that relative size influences access to power. Through a very simple model, I propose an explanation based on an initial high level of political inequality, and on the incentives that more powerful groups have to continue limiting other groups' access to power. This explanation incorporates essential elements of several existing theories on the relationship between group size and discrimination, and suggests a new empirical prediction: the single-peaked pattern should be weaker in countries where political institutions have historically been less open. This additional prediction is supported by the data.
[{'version': 'v1', 'created': 'Wed, 18 Mar 2020 06:35:35 GMT'}]
2020-03-19
[array(['Galindo-Silva', 'Hector', ''], dtype=object)]
2,305
cond-mat/9906164
Franco Bagnoli
Franco Bagnoli and Michele Bezzi
An evolutionary model for simple ecosystems
36 pages, including 16 figures, to appear in Annual Review of Computational Physics, D. Stauffer (ed.), World Scientific, Singapore
null
10.1142/9789812813329_0008
null
cond-mat.stat-mech q-bio
null
In this review some simple models of asexual populations evolving on smooth landscapes are studied. The basic model is based on a cellular automaton, which is analyzed here in the spatial mean-field limit. Firstly, the evolution on a fixed fitness landscape is considered. The correspondence between the time evolution of the population and equilibrium properties of a statistical mechanics system is investigated, finding the limits for which this mapping holds. The mutational meltdown, Eigen's error threshold and Muller's ratchet phenomena are studied in the framework of a simplified model. Finally, the shape of a quasi-species and the condition of coexistence of multiple species in a static fitness landscape are analyzed. In the second part, these results are applied to the study of the coexistence of quasi-species in the presence of competition, obtaining the conditions for a robust speciation effect in asexual populations.
[{'version': 'v1', 'created': 'Fri, 11 Jun 1999 09:06:38 GMT'}]
2016-11-23
[array(['Bagnoli', 'Franco', ''], dtype=object) array(['Bezzi', 'Michele', ''], dtype=object)]
2,306
2109.10392
Vivek Kantilal Adajania
Vivek K. Adajania, Aditya Sharma, Anish Gupta, Houman Masnavi, K Madhava Krishna and Arun K.Singh
Multi-Modal Model Predictive Control through Batch Non-Holonomic Trajectory Optimization: Application to Highway Driving
Published IEEE Robotics and Automation Letters (RA-L)
null
null
null
cs.RO
http://creativecommons.org/licenses/by/4.0/
Standard Model Predictive Control (MPC) or trajectory optimization approaches perform only a local search to solve a complex non-convex optimization problem. As a result, they cannot capture the multi-modal characteristic of human driving. A global optimizer can be a potential solution but is computationally intractable in a real-time setting. In this paper, we present a real-time MPC capable of searching over different driving modalities. Our basic idea is simple: we run several goal-directed parallel trajectory optimizations and score the resulting trajectories based on user-defined meta cost functions. This allows us to perform a global search over several locally optimal motion plans. Although conceptually straightforward, realizing this idea in real-time with existing optimizers is highly challenging from technical and computational standpoints. With this motivation, we present a novel batch non-holonomic trajectory optimization whose underlying matrix algebra is easily parallelizable across problem instances and reduces to computing large batch matrix-vector products. This structure, in turn, is achieved by deriving a linearization-free multi-convex reformulation of the non-holonomic kinematics and collision avoidance constraints. We extensively validate our approach using both synthetic and real data sets (NGSIM) of traffic scenarios. We highlight how our algorithm automatically takes lane-change and overtaking decisions based on the defined meta cost function. Our batch optimizer achieves trajectories with lower meta cost, up to 6x faster than competing baselines.
[{'version': 'v1', 'created': 'Tue, 21 Sep 2021 18:24:27 GMT'} {'version': 'v2', 'created': 'Mon, 14 Mar 2022 20:28:01 GMT'}]
2022-03-16
[array(['Adajania', 'Vivek K.', ''], dtype=object) array(['Sharma', 'Aditya', ''], dtype=object) array(['Gupta', 'Anish', ''], dtype=object) array(['Masnavi', 'Houman', ''], dtype=object) array(['Krishna', 'K Madhava', ''], dtype=object) array(['Singh', 'Arun K.', ''], dtype=object)]
2,307
hep-th/9811106
Sergei Frolov
G.Arutyunov and S.Frolov
Quadratic action for type IIB supergravity on $AdS_5\times S^5$
Latex, 16p, a misprint in eq.(5.14) is corrected
JHEP 9908 (1999) 024
10.1088/1126-6708/1999/08/024
UAHEP988
hep-th
null
The quadratic action for physical fields of type IIB supergravity model on $AdS_5\times S^5$ is derived starting from the recently found covariant action. All boundary terms that have to be added to the action to be used in the AdS/CFT correspondence are determined.
[{'version': 'v1', 'created': 'Thu, 12 Nov 1998 23:51:05 GMT'} {'version': 'v2', 'created': 'Sat, 30 Jan 1999 01:50:45 GMT'} {'version': 'v3', 'created': 'Fri, 16 Jul 1999 09:58:06 GMT'}]
2009-10-31
[array(['Arutyunov', 'G.', ''], dtype=object) array(['Frolov', 'S.', ''], dtype=object)]
2,308
1008.0783
Ke Zou
K. Zou, J. Zhu
Transport in gapped bilayer graphene: the role of potential fluctuations
to appear in Physical Review B: Rapid Comm
Phys. Rev. B 82, 081407(R) (2010)
10.1103/PhysRevB.82.081407
null
cond-mat.mes-hall cond-mat.mtrl-sci
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We employ a dual-gated geometry to control the band gap \Delta in bilayer graphene and study the temperature dependence of the resistance at the charge neutrality point, RNP(T), from 220 to 1.5 K. Above 5 K, RNP(T) is dominated by two thermally activated processes in different temperature regimes and exhibits exp(T3/T)^{1/3} below 5 K. We develop a simple model to account for the experimental observations, which highlights the crucial role of localized states produced by potential fluctuations. The high temperature conduction is attributed to thermal activation to the mobility edge. The activation energy approaches \Delta /2 at large band gap. At intermediate and low temperatures, the dominant conduction mechanisms are nearest neighbor hopping and variable-range hopping through localized states. Our systematic study provides a coherent understanding of transport in gapped bilayer graphene.
[{'version': 'v1', 'created': 'Wed, 4 Aug 2010 14:10:20 GMT'}]
2015-05-19
[array(['Zou', 'K.', ''], dtype=object) array(['Zhu', 'J.', ''], dtype=object)]
2,309
1905.11016
Jaroslaw Klos
G. Centala, M. L. Sokolovskyy, C. S. Davies, M. Mruczkiewicz, S. Mamica, J. Rychly, J. W. Klos, V. V. Kruglyak, M. Krawczyk
Influence of nonmagnetic dielectric spacers on the spin wave response of one-dimensional planar magnonic crystals
null
Phys. Rev. B 100, 224428 (2019)
10.1103/PhysRevB.100.224428
null
cond-mat.mes-hall
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The one-dimensional planar magnonic crystals are usually fabricated as a sequence of stripes intentionally or accidentally separated by non-magnetic spacers. The influence of spacers on shaping the spin wave spectra is complex and still not completely clarified. We performed the detailed numerical studies of the one-dimensional single- and bi-component magnonic crystals comprised of a periodic array of thin ferromagnetic stripes separated by non-magnetic spacers. We showed that the dynamic dipolar interactions between the stripes mediated by non-magnetic spacer, even ultra-narrow, significantly shift up the frequency of the ferromagnetic resonance and simultaneously reduce the spin wave group velocity, which is manifested by the flattening of the magnonic band. We attributed these changes in the spectra to the modifications of dipolar pinning and shape anisotropy both dependent on the width of the spacers and the thickness of the stripes, as well as to the dynamical magnetic volume charges formed due to inhomogeneous spin wave amplitude.
[{'version': 'v1', 'created': 'Mon, 27 May 2019 07:36:12 GMT'} {'version': 'v2', 'created': 'Wed, 17 Jul 2019 07:52:16 GMT'} {'version': 'v3', 'created': 'Fri, 27 Sep 2019 19:03:32 GMT'} {'version': 'v4', 'created': 'Fri, 6 Dec 2019 19:30:08 GMT'}]
2020-01-08
[array(['Centala', 'G.', ''], dtype=object) array(['Sokolovskyy', 'M. L.', ''], dtype=object) array(['Davies', 'C. S.', ''], dtype=object) array(['Mruczkiewicz', 'M.', ''], dtype=object) array(['Mamica', 'S.', ''], dtype=object) array(['Rychly', 'J.', ''], dtype=object) array(['Klos', 'J. W.', ''], dtype=object) array(['Kruglyak', 'V. V.', ''], dtype=object) array(['Krawczyk', 'M.', ''], dtype=object)]
2,310
0801.0560
Francois Renard
Magali Rossi (LGCA, PGP), Olivier Vidal (LGCA), Bernd Wunder (GFZ), Fran\c{c}ois Renard (PGP, LGIT)
Influence of time, temperature, confining pressure and fluid content on the experimental compaction of spherical grains
null
Tectonophysics 441 (2007) 47-65
10.1016/j.tecto.2007.05.001
null
physics.geo-ph
null
Theoretical models of compaction processes, such as for example intergranular pressure-solution (IPS), focus on deformation occurring at the contacts between spherical grains that constitute an aggregate. In order to investigate the applicability of such models, and to quantify the deformation of particles within an aggregate, isostatic experiments were performed in cold-sealed vessels on glass sphere aggregates at 200 MPa confining pressure and 350 degrees C with varying amounts of fluid.
[{'version': 'v1', 'created': 'Thu, 3 Jan 2008 16:24:52 GMT'}]
2008-01-04
[array(['Rossi', 'Magali', '', 'LGCA, PGP'], dtype=object) array(['Vidal', 'Olivier', '', 'LGCA'], dtype=object) array(['Wunder', 'Bernd', '', 'GFZ'], dtype=object) array(['Renard', 'François', '', 'PGP, LGIT'], dtype=object)]
2,311
1902.02249
Martin Obergaulinger
A. Iyudin (SINP, Moscow State University, Moscow), E. M\"uller (MPA, Garching), M. Obergaulinger (TU Darmstadt, Univ. Val\`encia)
Titanium hidden in dust
8 pages, 5 figures; accepted for publication in MNRAS
null
10.1093/mnras/stz419
null
astro-ph.HE
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Cassiopeia A, one of the most intriguing galactic supernova remnants, has been a target of many observational efforts including most recent observations by ALMA, Hubble, Herschel, Spitzer, NuSTAR, Integral, and other observatories. We use recent gamma-ray lines observations of the radioactive products of Cas A supernova explosive nucleosynthesis as well as spectral energy densities derived for Cas A at infrared wavelengths to speculate about the possibility of radioactive 44Ti being locked into large dust grains. This suggestion is also supported by the possible observation of a pre-supernova outburst about 80 years before the actual Cas A supernova explosion in 1671 AD by Italian astronomer G.D. Cassini. The plausibility of such a scenario is discussed also with reference to recent supernovae, and to the contribution of core-collapse supernovae to the overall dust production in the Galaxy.
[{'version': 'v1', 'created': 'Wed, 6 Feb 2019 15:57:49 GMT'}]
2019-02-20
[array(['Iyudin', 'A.', '', 'SINP, Moscow State University, Moscow'], dtype=object) array(['Müller', 'E.', '', 'MPA,\n Garching'], dtype=object) array(['Obergaulinger', 'M.', '', 'TU Darmstadt, Univ. València'], dtype=object) ]
2,312
1601.05007
Walter Langel
Walter Langel
Analysis of perturbed H2O vibrations beyond Fourier transform
22 pages, 4 figures
null
null
null
cond-mat.soft physics.chem-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
New analysis methods for the vibrational dynamics from molecular dynamics are proposed and applied to liquid H$_{2}$O. The internal modes of H$_{2}$O are amplitude-modulated by Langevin dynamics with the frequency of the H$_{2}$O libration (~600 cm$^{-1}$) and its first overtone (~1200 cm$^{-1}$). The carrier signal is frequency-modulated by the variation of the hydrogen bond strength due to thermal motion and by dephasing collisions. The standard power spectra of the bond parameters yield broadened normal modes due to a superposition of several perturbations. Here, the oscillating bond lengths and angles are demodulated by the spline interpolation of the minima or maxima. Additionally, a zero-crossing method is described, which yields the spectrum of the frequency modulated carrier without Fourier transform by directly converting the oscillation periods.
[{'version': 'v1', 'created': 'Tue, 19 Jan 2016 17:29:53 GMT'} {'version': 'v2', 'created': 'Wed, 16 Mar 2016 15:15:41 GMT'}]
2016-03-17
[array(['Langel', 'Walter', ''], dtype=object)]
2,313
1111.4425
Frank X. Lee
Frank X. Lee, Andrei Alexandru
Spin Polarizabilities on the Lattice
7 pages, 1 figure, poster presented at The XXIX International Conference on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Valley, Lake Tahoe, California
null
null
null
hep-lat nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Spin polarizabilities provide information on the internal structure of hadrons in the presence of weak external electromagnetic fields, and are actively studied by Compton scattering experiments. They provide finer detail than the regular polarizabilities since they require space and time-varying fields. Using an effective action in the weak field limit, we have identified methods to isolate each of the physical quantities ($\mu, \alpha, \beta, \gamma_{E1}, \gamma_{M1}, \gamma_{E2}, \gamma_{M2}$) for spin-1/2 hadrons, both neutral and charged. We also perform a lattice QCD simulation to investigate the feasibility of the effective action approach.
[{'version': 'v1', 'created': 'Fri, 18 Nov 2011 16:56:49 GMT'}]
2015-03-19
[array(['Lee', 'Frank X.', ''], dtype=object) array(['Alexandru', 'Andrei', ''], dtype=object)]
2,314
1606.03250
Eugene Zabrodin
L. Bravina, B.H. Brusheim Johansson, J. Crkovsk\'a, G. Eyyubova, V. Korotkikh, I. Lokhtin, L. Malinina, E. Nazarova, S. Petrushanko, A. Snigirev, E. Zabrodin
HYDRO + JETS (HYDJET++) event generator for Pb+Pb collisions at LHC
8 pages, 6 figures, contribution to Proceedings of the Winter Workshop on Nuclear Dynamics 2016
Journal of Physics: Conference Series 736 (2016) 012024
10.1088/1742-6596/736/1/012024
null
hep-ph nucl-ex nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Monte Carlo event generator HYDJET++ is one of the few generators, designed for the calculations of heavy-ion collisions at ultrarelativistic energies, which combine treatment of soft hydro-like processes with the description of jets traversing the hot and dense partonic medium. The model is employed to study the azimuthal anisotropy phenomena, dihadron angular correlations and event-by-event (EbyE) fluctuations of the anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV. The interplay of soft and hard processes describes the violation of the mass hierarchy of meson and baryon elliptic and triangular flows at p_T > 2 GeV/c, the fall-off of the flow harmonics at intermediate transverse momenta, and the worsening of the number-of-constituent-quark (NCQ) scaling of elliptic/triangular flow at LHC compared to RHIC energies. The cross-talk of v_2 and v_3 leads to emergence of higher order harmonics in the model and to appearance of the ridge structure in dihadron angular correlations in a broad pseudorapidity range. HYDJET++ possesses also the dynamical EbyE fluctuations of the anisotropic flow. The model results agree well with the experimental data.
[{'version': 'v1', 'created': 'Fri, 10 Jun 2016 09:53:35 GMT'}]
2016-08-29
[array(['Bravina', 'L.', ''], dtype=object) array(['Johansson', 'B. H. Brusheim', ''], dtype=object) array(['Crkovská', 'J.', ''], dtype=object) array(['Eyyubova', 'G.', ''], dtype=object) array(['Korotkikh', 'V.', ''], dtype=object) array(['Lokhtin', 'I.', ''], dtype=object) array(['Malinina', 'L.', ''], dtype=object) array(['Nazarova', 'E.', ''], dtype=object) array(['Petrushanko', 'S.', ''], dtype=object) array(['Snigirev', 'A.', ''], dtype=object) array(['Zabrodin', 'E.', ''], dtype=object)]
2,315
1710.08348
Myeonggi Kwon
Joontae Kim, Myeonggi Kwon, Junyoung Lee
Volume growth in the component of fibered twists
32 pages
null
10.1142/S0219199718500141
null
math.SG
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
For a Liouville domain $W$ whose boundary admits a periodic Reeb flow, we can consider the connected component $[\tau] \in \pi_0(\text{Symp}^c(\widehat W))$ of fibered twists. In this paper, we investigate an entropy-type invariant, called the slow volume growth, of the component $[\tau]$ and give a uniform lower bound of the growth using wrapped Floer homology. We also show that $[\tau]$ has infinite order in $\pi_0(\text{Symp}^c(\widehat W))$ if there is an admissible Lagrangian $L$ in $W$ whose wrapped Floer homology is infinite dimensional. We apply our results to fibered twists coming from the Milnor fibers of $A_k$-type singularities and complements of a symplectic hypersurface in a real symplectic manifold. They admit so-called real Lagrangians, and we can explicitly compute wrapped Floer homology groups using a version of Morse-Bott spectral sequences.
[{'version': 'v1', 'created': 'Mon, 23 Oct 2017 15:50:43 GMT'}]
2018-04-19
[array(['Kim', 'Joontae', ''], dtype=object) array(['Kwon', 'Myeonggi', ''], dtype=object) array(['Lee', 'Junyoung', ''], dtype=object)]
2,316
2007.08337
Teng Liu
Teng Liu, Xiaolin Tang, Jiaxin Chen, Hong Wang, Wenhao Tan, Yalian Yang
Transferred Energy Management Strategies for Hybrid Electric Vehicles Based on Driving Conditions Recognition
6 pages, 5 figures
null
null
null
eess.SP cs.LG
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Energy management strategies (EMSs) are the most significant components in hybrid electric vehicles (HEVs) because they decide the potential of energy conservation and emission reduction. This work presents a transferred EMS for a parallel HEV via combining the reinforcement learning method and driving conditions recognition. First, the Markov decision process (MDP) and the transition probability matrix are utilized to differentiate the driving conditions. Then, reinforcement learning algorithms are formulated to achieve power split controls, in which Q-tables are tuned by current driving situations. Finally, the proposed transferred framework is estimated and validated in a parallel hybrid topology. Its advantages in computational efficiency and fuel economy are summarized and proved.
[{'version': 'v1', 'created': 'Thu, 16 Jul 2020 13:57:46 GMT'}]
2020-07-17
[array(['Liu', 'Teng', ''], dtype=object) array(['Tang', 'Xiaolin', ''], dtype=object) array(['Chen', 'Jiaxin', ''], dtype=object) array(['Wang', 'Hong', ''], dtype=object) array(['Tan', 'Wenhao', ''], dtype=object) array(['Yang', 'Yalian', ''], dtype=object)]
2,317
gr-qc/0502050
Nikolai V. Mitskievich
Vladimir N. Efremov, Nikolai V. Mitskievich, Alfonso M. Hernandez Magdaleno and Ramona Serrano Bautista
Topological gravity on plumbed V-cobordisms
29 pages
Class.Quant.Grav. 22 (2005) 3725-3744
10.1088/0264-9381/22/17/022
null
gr-qc
null
An ensemble of cosmological models based on generalized BF-theory is constructed where the role of vacuum (zero-level) coupling constants is played by topologically invariant rational intersection forms (cosmological-constant matrices) of 4-dimensional plumbed V-cobordisms which are interpreted as Euclidean spacetime regions. For these regions describing topology changes, the rational and integer intersection matrices are calculated. A relation is found between the hierarchy of certain elements of these matrices and the hierarchy of coupling constants of the universal (low-energy) interactions. PACS numbers: 0420G, 0240, 0460
[{'version': 'v1', 'created': 'Fri, 11 Feb 2005 05:30:15 GMT'} {'version': 'v2', 'created': 'Sat, 12 Feb 2005 00:21:03 GMT'}]
2009-11-11
[array(['Efremov', 'Vladimir N.', ''], dtype=object) array(['Mitskievich', 'Nikolai V.', ''], dtype=object) array(['Magdaleno', 'Alfonso M. Hernandez', ''], dtype=object) array(['Bautista', 'Ramona Serrano', ''], dtype=object)]
2,318
2305.07625
Ondrej Bohdal
Ondrej Bohdal, Yinbing Tian, Yongshuo Zong, Ruchika Chavhan, Da Li, Henry Gouk, Li Guo, Timothy Hospedales
Meta Omnium: A Benchmark for General-Purpose Learning-to-Learn
Accepted at CVPR 2023. Project page: https://edi-meta-learning.github.io/meta-omnium
null
null
null
cs.CV cs.LG stat.ML
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Meta-learning and other approaches to few-shot learning are widely studied for image recognition, and are increasingly applied to other vision tasks such as pose estimation and dense prediction. This naturally raises the question of whether there is any few-shot meta-learning algorithm capable of generalizing across these diverse task types? To support the community in answering this question, we introduce Meta Omnium, a dataset-of-datasets spanning multiple vision tasks including recognition, keypoint localization, semantic segmentation and regression. We experiment with popular few-shot meta-learning baselines and analyze their ability to generalize across tasks and to transfer knowledge between them. Meta Omnium enables meta-learning researchers to evaluate model generalization to a much wider array of tasks than previously possible, and provides a single framework for evaluating meta-learners across a wide suite of vision applications in a consistent manner.
[{'version': 'v1', 'created': 'Fri, 12 May 2023 17:25:19 GMT'}]
2023-05-15
[array(['Bohdal', 'Ondrej', ''], dtype=object) array(['Tian', 'Yinbing', ''], dtype=object) array(['Zong', 'Yongshuo', ''], dtype=object) array(['Chavhan', 'Ruchika', ''], dtype=object) array(['Li', 'Da', ''], dtype=object) array(['Gouk', 'Henry', ''], dtype=object) array(['Guo', 'Li', ''], dtype=object) array(['Hospedales', 'Timothy', ''], dtype=object)]
2,319
1204.3533
Madhav Nori
Madhav V. Nori
Summation and the Poisson formula
Several recommendationsof the reviewer to improve readability of the paper have been adopted
null
null
null
math.NT math.FA
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
By giving the definition of the sum of a series indexed by a set on which a group acts, we prove that the sum of the series that defines the Riemann zeta function, the Epstein zeta function, and a few other series indexed by $\Z^k$ has an intrinsic meaning as a complex number, independent of the requirements of analytic continuation. The definition of the sum requires nothing more than algebra and the concept of absolute convergence. The analytical significance of the algebraically defined sum is then explained by an argument that relies on the Poisson formula for tempered distributions.
[{'version': 'v1', 'created': 'Mon, 16 Apr 2012 15:45:54 GMT'} {'version': 'v2', 'created': 'Thu, 24 May 2012 19:14:02 GMT'} {'version': 'v3', 'created': 'Mon, 10 Feb 2020 04:44:23 GMT'}]
2020-02-11
[array(['Nori', 'Madhav V.', ''], dtype=object)]
2,320
hep-ex/9410010
Krzysztof L. Genser; 840-8278; MS
Krzysztof GENSER (Fermilab), D0 Collaboration
Search for Top with D0 Detector in Dilepton Channel
talk presented at the Eight Meeting of DPF of APS, Albuquerque,NM, August 1994, 5 pages, FNAL/CONF-94/288, .ps at http://d0wop.fnal.gov/d0pubs/dpf94/genser.ps
null
null
null
hep-ex
null
Preliminary results from a search for high mass ttbar quark pair production in ppbar collisions at sqrt(s)=1.8TeV with the D0 detector in the ee+jets, emu+jets, and mumu+jets decay channels are presented. No conclusive evidence for top quark production for an integrated luminosity of 13.5+/-1.6pb-1 is observed.
[{'version': 'v1', 'created': 'Wed, 12 Oct 1994 16:54:48 GMT'}]
2009-09-25
[array(['GENSER', 'Krzysztof', '', 'Fermilab'], dtype=object) array(['Collaboration', 'D0', ''], dtype=object)]
2,321
math/0609606
Jordan Goblet
Jordan Goblet
Lipschitz extension of multiple Banach-valued functions in the sense of Almgren
6 pages
null
null
null
math.MG
null
A multiple-valued function $f:X\to {\bf Q}_Q(Y)$ is essentially a rule assigning $Q$ unordered and non necessarily distinct elements of $Y$ to each element of $X$. We study the Lipschitz extension problem in this context by using two general Lipschitz extension theorems recently proved by U. Lang and T. Schlichenmaier. We prove that the pair $(X,{\bf Q}_Q(Y))$ has the Lipschitz extension property if $Y$ is a Banach space and $X$ is a metric space with a finite Nagata dimension. We also show that ${\bf Q}_{Q}(Y)$ is an absolute Lipschitz retract if $Y$ is a finite algebraic dimensional Banach space.
[{'version': 'v1', 'created': 'Thu, 21 Sep 2006 14:15:13 GMT'}]
2007-05-23
[array(['Goblet', 'Jordan', ''], dtype=object)]
2,322
cs/0206035
Atsushi Fujii
Shigeto Higuchi, Masatoshi Fukui, Atsushi Fujii and Tetsuya Ishikawa
PRIME: A System for Multi-lingual Patent Retrieval
null
Proceedings of MT Summit VIII, pp.163-167, Sep. 2001
null
null
cs.CL
null
Given the growing number of patents filed in multiple countries, users are interested in retrieving patents across languages. We propose a multi-lingual patent retrieval system, which translates a user query into the target language, searches a multilingual database for patents relevant to the query, and improves the browsing efficiency by way of machine translation and clustering. Our system also extracts new translations from patent families consisting of comparable patents, to enhance the translation dictionary.
[{'version': 'v1', 'created': 'Mon, 24 Jun 2002 08:00:45 GMT'}]
2007-05-23
[array(['Higuchi', 'Shigeto', ''], dtype=object) array(['Fukui', 'Masatoshi', ''], dtype=object) array(['Fujii', 'Atsushi', ''], dtype=object) array(['Ishikawa', 'Tetsuya', ''], dtype=object)]
2,323
2207.05212
Sylvester Joosten
B. Duran, Z. -E. Meziani, S. Joosten, M. K. Jones, S. Prasad, C. Peng, W. Armstrong, H. Atac, E. Chudakov, H. Bhatt, D. Bhetuwal, M. Boer, A. Camsonne, J. -P. Chen, M. M. Dalton, N. Deokar, M. Diefenthaler, J. Dunne, L. El Fassi, E. Fuchey, H. Gao, D. Gaskell, O. Hansen, F. Hauenstein, D. Higinbotham, S. Jia, A. Karki, C. Keppel, P. King, H. S. Ko, X. Li, R. Li, D. Mack, S. Malace, M. McCaughan, R. E. McClellan, R. Michaels, D. Meekins, M. Paolone, L. Pentchev, E. Pooser, A. Puckett, R. Radloff, M. Rehfuss, P. E. Reimer, S. Riordan, B. Sawatzky, A. Smith, N. Sparveris, H. Szumila-Vance, S. Wood, J. Xie, Z. Ye, C. Yero, Z. Zhao
Determining the Proton's Gluonic Gravitational Form Factors
Accepted for publication
Nature 615, 813-816 (2023)
10.1038/s41586-023-05730-4
null
nucl-ex hep-ex hep-ph
http://creativecommons.org/licenses/by/4.0/
The proton is one of the main building blocks of all visible matter in the universe. Among its intrinsic properties are its electric charge, mass, and spin. These emerge from the complex dynamics of its fundamental constituents, quarks and gluons, described by the theory of quantum chromodynamics (QCD). Using electron scattering, its electric charge and spin, shared among the quark constituents, have been the topic of active investigation. An example is the novel precision measurement of the proton's electric charge radius. In contrast, little is known about the proton's inner mass density, dominated by the energy carried by the gluons, which are hard to access through electron scattering since gluons carry no electromagnetic charge. Here, we chose to probe this gluonic gravitational density using a small color dipole, the $J/\psi$ particle, through its threshold photoproduction. From our data, we determined, for the first time, the proton's gluonic gravitational form factors. We used a variety of models and determined, in all cases, a mass radius that is notably smaller than the electric charge radius. In some cases, the determined radius, although model dependent, is in excellent agreement with first-principle predictions from lattice QCD. This work paves the way for a deeper understanding of the salient role of gluons in providing gravitational mass to visible matter.
[{'version': 'v1', 'created': 'Mon, 11 Jul 2022 22:13:02 GMT'} {'version': 'v2', 'created': 'Fri, 27 Jan 2023 21:51:05 GMT'} {'version': 'v3', 'created': 'Tue, 31 Jan 2023 19:52:21 GMT'} {'version': 'v4', 'created': 'Tue, 7 Feb 2023 19:55:30 GMT'}]
2023-04-05
[array(['Duran', 'B.', ''], dtype=object) array(['Meziani', 'Z. -E.', ''], dtype=object) array(['Joosten', 'S.', ''], dtype=object) array(['Jones', 'M. K.', ''], dtype=object) array(['Prasad', 'S.', ''], dtype=object) array(['Peng', 'C.', ''], dtype=object) array(['Armstrong', 'W.', ''], dtype=object) array(['Atac', 'H.', ''], dtype=object) array(['Chudakov', 'E.', ''], dtype=object) array(['Bhatt', 'H.', ''], dtype=object) array(['Bhetuwal', 'D.', ''], dtype=object) array(['Boer', 'M.', ''], dtype=object) array(['Camsonne', 'A.', ''], dtype=object) array(['Chen', 'J. -P.', ''], dtype=object) array(['Dalton', 'M. M.', ''], dtype=object) array(['Deokar', 'N.', ''], dtype=object) array(['Diefenthaler', 'M.', ''], dtype=object) array(['Dunne', 'J.', ''], dtype=object) array(['Fassi', 'L. El', ''], dtype=object) array(['Fuchey', 'E.', ''], dtype=object) array(['Gao', 'H.', ''], dtype=object) array(['Gaskell', 'D.', ''], dtype=object) array(['Hansen', 'O.', ''], dtype=object) array(['Hauenstein', 'F.', ''], dtype=object) array(['Higinbotham', 'D.', ''], dtype=object) array(['Jia', 'S.', ''], dtype=object) array(['Karki', 'A.', ''], dtype=object) array(['Keppel', 'C.', ''], dtype=object) array(['King', 'P.', ''], dtype=object) array(['Ko', 'H. S.', ''], dtype=object) array(['Li', 'X.', ''], dtype=object) array(['Li', 'R.', ''], dtype=object) array(['Mack', 'D.', ''], dtype=object) array(['Malace', 'S.', ''], dtype=object) array(['McCaughan', 'M.', ''], dtype=object) array(['McClellan', 'R. E.', ''], dtype=object) array(['Michaels', 'R.', ''], dtype=object) array(['Meekins', 'D.', ''], dtype=object) array(['Paolone', 'M.', ''], dtype=object) array(['Pentchev', 'L.', ''], dtype=object) array(['Pooser', 'E.', ''], dtype=object) array(['Puckett', 'A.', ''], dtype=object) array(['Radloff', 'R.', ''], dtype=object) array(['Rehfuss', 'M.', ''], dtype=object) array(['Reimer', 'P. E.', ''], dtype=object) array(['Riordan', 'S.', ''], dtype=object) array(['Sawatzky', 'B.', ''], dtype=object) array(['Smith', 'A.', ''], dtype=object) array(['Sparveris', 'N.', ''], dtype=object) array(['Szumila-Vance', 'H.', ''], dtype=object) array(['Wood', 'S.', ''], dtype=object) array(['Xie', 'J.', ''], dtype=object) array(['Ye', 'Z.', ''], dtype=object) array(['Yero', 'C.', ''], dtype=object) array(['Zhao', 'Z.', ''], dtype=object)]
2,324
2103.08614
William Coulton
William R. Coulton
The parity-odd Intrinsic Bispectrum
8 pages, 4 figures
null
10.1103/PhysRevD.104.103527
null
astro-ph.CO gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
At linear order the only expected source of a curl-like, B mode, polarization pattern in the cosmic microwave background (CMB) is primordial gravitational waves. At second-order B modes are also produced from purely scalar, density, initial conditions. Unlike B modes from primordial gravitational waves, these B modes are expected to be non-Gaussian and not independent from the temperature and gradient-like polarization, E mode, CMB anisotropies. We find that the three point function between a second-order B mode and two first-order T/E modes is a powerful probe of second-order B modes and should be detectable by upcoming CMB experiments. We focus on the contribution to the three point function arising from non-linear evolution and scattering processes before the end of recombination as this provides new information on the universe at $z> 1000$. We find that this contribution can be separated from the other contributions and is measurable at $\sim 2.5 \sigma$ by CMB experiments with noise levels of $\sim 1 \mu$Karcmin and delensing efficiencies $\ge 90\%$, such as the proposed PICO satellite. We show that approximately half of the total signal arises from non-linearly induced vector and tensor metric perturbations, as evaluated in the Newtonian gauge. This bispectrum is a unique probe of these perturbations in the CMB, as their contribution to the power spectrum is suppressed. An important feature of this bispectrum is that the detectability will increase with decreasing experimental noise, in the absence of primordial B modes, provided that delensing efficiencies improve in parallel.
[{'version': 'v1', 'created': 'Mon, 15 Mar 2021 18:00:10 GMT'}]
2021-12-01
[array(['Coulton', 'William R.', ''], dtype=object)]
2,325
2301.06897
Mark Veraar
Antonio Agresti and Mark Veraar
Reaction-diffusion equations with transport noise and critical superlinear diffusion: Global well-posedness of weakly dissipative systems
typos corrected
null
null
null
math.AP math.FA math.PR
http://creativecommons.org/licenses/by-sa/4.0/
In this paper we prove global well-posedness for reaction-diffusion systems with transport noise on the $d$-dimensional torus. We show new global well-posedness results for a large class of scalar equations (e.g.\ the Allen-Cahn equation), and dissipative systems (e.g.\ equations in coagulation dynamics). Moreover, we prove global well-posedness for two weakly dissipative systems: Lotka-Volterra equations for $d\in\{1, 2, 3, 4\}$ and the Brusselator for $d\in \{1, 2, 3\}$. Many of the results are also new without transport noise. The proofs are based on maximal regularity techniques, positivity results, and sharp blow-up criteria developed in our recent works, combined with energy estimates based on Ito's formula and stochastic Gronwall inequalities. Key novelties include the introduction of new $L^{\zeta}$-coercivity/dissipative conditions and the development of an $L^p(L^q)$-framework for systems of reaction-diffusion equations, which are needed when treating dimensions $d\in \{2, 3\}$ in case of cubic or higher nonlinearities.
[{'version': 'v1', 'created': 'Tue, 17 Jan 2023 14:07:37 GMT'} {'version': 'v2', 'created': 'Thu, 30 Mar 2023 08:44:52 GMT'}]
2023-03-31
[array(['Agresti', 'Antonio', ''], dtype=object) array(['Veraar', 'Mark', ''], dtype=object)]
2,326
1804.06078
Haodi Hou
Haodi Hou, Jing Huo, Yang Gao
Cross-Domain Adversarial Auto-Encoder
Under review as a conference paper of KDD 2018
null
null
null
cs.CV cs.AI cs.IT math.IT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we propose the Cross-Domain Adversarial Auto-Encoder (CDAAE) to address the problem of cross-domain image inference, generation and transformation. We make the assumption that images from different domains share the same latent code space for content, while having separate latent code space for style. The proposed framework can map cross-domain data to a latent code vector consisting of a content part and a style part. The latent code vector is matched with a prior distribution so that we can generate meaningful samples from any part of the prior space. Consequently, given a sample of one domain, our framework can generate various samples of the other domain with the same content of the input. This makes the proposed framework different from the current work of cross-domain transformation. Besides, the proposed framework can be trained with both labeled and unlabeled data, which makes it also suitable for domain adaptation. Experimental results on data sets SVHN, MNIST and CASIA show the proposed framework achieved visually appealing performance for image generation task. Besides, we also demonstrate the proposed method achieved superior results for domain adaptation. Code of our experiments is available in https://github.com/luckycallor/CDAAE.
[{'version': 'v1', 'created': 'Tue, 17 Apr 2018 07:12:58 GMT'}]
2018-04-18
[array(['Hou', 'Haodi', ''], dtype=object) array(['Huo', 'Jing', ''], dtype=object) array(['Gao', 'Yang', ''], dtype=object)]
2,327
hep-th/0301047
Sibiryakov
S. V. Demidov, S. L. Dubovsky, V. A. Rubakov, S. M. Sibiryakov
Gauge theory solitons on noncommutative cylinder
References added; to appear in Theor.Math.Phys
Theor.Math.Phys. 138 (2004) 269-283; Teor.Mat.Fiz. 138 (2004) 319-337
10.1023/B:TAMP.0000015073.02483.03
INR/TH-2003-2
hep-th
null
We generalize to noncommutative cylinder the solution generation technique, originally suggested for gauge theories on noncommutative plane. For this purpose we construct partial isometry operators and complete set of orthogonal projectors in the algebra of the cylinder, and an isomorphism between the free module and its direct sum with the Fock module on the cylinder. We construct explicitly the gauge theory soliton and evaluate the spectrum of perturbations about this soliton.
[{'version': 'v1', 'created': 'Wed, 8 Jan 2003 17:18:39 GMT'} {'version': 'v2', 'created': 'Mon, 16 Jun 2003 10:59:40 GMT'}]
2009-11-10
[array(['Demidov', 'S. V.', ''], dtype=object) array(['Dubovsky', 'S. L.', ''], dtype=object) array(['Rubakov', 'V. A.', ''], dtype=object) array(['Sibiryakov', 'S. M.', ''], dtype=object)]
2,328
2111.07891
Cl\'ement Lacro\^ute
Shambo Mukherjee, Jacques Millo, Baptiste Marechal, S\'everine Denis, Gwenha\"el Goavec-M\'erou, Jean-Michel Friedt, Yann Kersal\'e, Cl\'ement Lacro\^ute
Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber
11 pages, 6 figures
null
10.1109/TUFFC.2021.3125066
null
physics.ins-det physics.optics
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Progress made in optical references, including ultra-stable Fabry-Perot cavities, optical frequency combs and optical atomic clocks, have driven the need for ultra-stable optical fiber networks. Telecom-wavelength ultra-pure optical signal transport has been demonstrated on distances ranging from the laboratory scale to the continental scale. In this manuscript, we present a Doppler-cancellation setup based on a digital phase-locked loop for ultra-stable optical signal dissemination over fiber. The optical phase stabilization setup is based on a usual heterodyne Michelson-interferometer setup, while the Software Defined Radio (SDR) implementation of the phase-locked loop is based on a compact commercial board embedding a field programmable gate array, analog-to-digital and digital-to-analog converters. Using three different configurations including an undersampling method, we demonstrate a 20 m long fiber link with residual fractional frequency instability as low as $10^{-18}$ at 1000 s, and an optical phase noise of $-70$ dBc/Hz at 1 Hz with a telecom frequency carrier.
[{'version': 'v1', 'created': 'Tue, 9 Nov 2021 16:05:27 GMT'}]
2022-06-08
[array(['Mukherjee', 'Shambo', ''], dtype=object) array(['Millo', 'Jacques', ''], dtype=object) array(['Marechal', 'Baptiste', ''], dtype=object) array(['Denis', 'Séverine', ''], dtype=object) array(['Goavec-Mérou', 'Gwenhaël', ''], dtype=object) array(['Friedt', 'Jean-Michel', ''], dtype=object) array(['Kersalé', 'Yann', ''], dtype=object) array(['Lacroûte', 'Clément', ''], dtype=object)]
2,329
2302.09624
Richeng Jin
Richeng Jin, Zhonggen Su, Caijun Zhong, Zhaoyang Zhang, Tony Quek, Huaiyu Dai
On the $f$-Differential Privacy Guarantees of Discrete-Valued Mechanisms
null
null
null
null
cs.CR cs.IT cs.LG math.IT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We consider a federated data analytics problem in which a server coordinates the collaborative data analysis of multiple users with privacy concerns and limited communication capability. The commonly adopted compression schemes introduce information loss into local data while improving communication efficiency, and it remains an open question whether such discrete-valued mechanisms provide any privacy protection. Considering that differential privacy has become the gold standard for privacy measures due to its simple implementation and rigorous theoretical foundation, in this paper, we study the privacy guarantees of discrete-valued mechanisms with finite output space in the lens of $f$-differential privacy (DP). By interpreting the privacy leakage as a hypothesis testing problem, we derive the closed-form expression of the tradeoff between type I and type II error rates, based on which the $f$-DP guarantees of a variety of discrete-valued mechanisms, including binomial mechanisms, sign-based methods, and ternary-based compressors, are characterized. We further investigate the Byzantine resilience of binomial mechanisms and ternary compressors and characterize the tradeoff among differential privacy, Byzantine resilience, and communication efficiency. Finally, we discuss the application of the proposed method to differentially private stochastic gradient descent in federated learning.
[{'version': 'v1', 'created': 'Sun, 19 Feb 2023 16:58:53 GMT'}]
2023-02-21
[array(['Jin', 'Richeng', ''], dtype=object) array(['Su', 'Zhonggen', ''], dtype=object) array(['Zhong', 'Caijun', ''], dtype=object) array(['Zhang', 'Zhaoyang', ''], dtype=object) array(['Quek', 'Tony', ''], dtype=object) array(['Dai', 'Huaiyu', ''], dtype=object)]
2,330
astro-ph/0112312
Walter Fulgione
M.Aglietta, P.Antonioli, G.Bari, C.Castagnoli, W.Fulgione, P.Galeotti, PL.Ghia, P.Giusti, E.Kemp, A.S.Malguin, G.Nurzia, A.Pesci, P.Picchi, I.A.Pless, V.G.Ryasny, O.G.Ryazhskaya, G.Sartorelli, M.Selvi, C.Vigorito, F.Vissani, L.Votano, V.F.Yakushev, G.T.Zatsepin, A.Zichichi
Effects of neutrino oscillations on the supernova signal in LVD
4 pages, 3 figures. Presented at TAUP 2001 (7th international workshop on Topics in Astroparticle and Underground Physics), Sep 2001, Laboratori Nazionali del Gran Sasso, Assergi, Italy
Nucl.Phys.Proc.Suppl. 110 (2002) 410-413
10.1016/S0920-5632(02)01525-6
null
astro-ph hep-ex hep-ph
null
We study the impact of neutrino oscillations on the supernova neutrino signal in the Large Volume Detector (LVD). The number of expected events for a galactic supernova (D=10 kpc) is calculated, assuming neutrino masses and mixing that explain solar and atmospheric neutrino results. The possibility to detect neutrinos in different channels makes LVD sensitive to different scenarios for neutrino properties, such as normal or inverted neutrino mass hierarchy, and/or adiabatic or non adiabatic MSW resonances associated to U(e3). Of particular importance are the charged current reactions on carbon: oscillations increase by almost one order of magnitude the number of events expected from this channel.
[{'version': 'v1', 'created': 'Thu, 13 Dec 2001 11:32:38 GMT'}]
2015-06-24
[array(['Aglietta', 'M.', ''], dtype=object) array(['Antonioli', 'P.', ''], dtype=object) array(['Bari', 'G.', ''], dtype=object) array(['Castagnoli', 'C.', ''], dtype=object) array(['Fulgione', 'W.', ''], dtype=object) array(['Galeotti', 'P.', ''], dtype=object) array(['Ghia', 'PL.', ''], dtype=object) array(['Giusti', 'P.', ''], dtype=object) array(['Kemp', 'E.', ''], dtype=object) array(['Malguin', 'A. S.', ''], dtype=object) array(['Nurzia', 'G.', ''], dtype=object) array(['Pesci', 'A.', ''], dtype=object) array(['Picchi', 'P.', ''], dtype=object) array(['Pless', 'I. A.', ''], dtype=object) array(['Ryasny', 'V. G.', ''], dtype=object) array(['Ryazhskaya', 'O. G.', ''], dtype=object) array(['Sartorelli', 'G.', ''], dtype=object) array(['Selvi', 'M.', ''], dtype=object) array(['Vigorito', 'C.', ''], dtype=object) array(['Vissani', 'F.', ''], dtype=object) array(['Votano', 'L.', ''], dtype=object) array(['Yakushev', 'V. F.', ''], dtype=object) array(['Zatsepin', 'G. T.', ''], dtype=object) array(['Zichichi', 'A.', ''], dtype=object)]
2,331
1910.06621
Arpan Garai
Arpan Garai, Samit Biswas, Sekhar Mandal and Bidyut. B. Chaudhuri
A Method to Generate Synthetically Warped Document Image
null
null
null
null
cs.CV
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The digital camera captured document images may often be warped and distorted due to different camera angles or document surfaces. A robust technique is needed to solve this kind of distortion. The research on dewarping of the document suffers due to the limited availability of benchmark public dataset. In recent times, deep learning based approaches are used to solve the problems accurately. To train most of the deep neural networks a large number of document images is required and generating such a large volume of document images manually is difficult. In this paper, we propose a technique to generate a synthetic warped image from a flat-bedded scanned document image. It is done by calculating warping factors for each pixel position using two warping position parameters (WPP) and eight warping control parameters (WCP). These parameters can be specified as needed depending upon the desired warping. The results are compared with similar real captured images both qualitative and quantitative way.
[{'version': 'v1', 'created': 'Tue, 15 Oct 2019 09:54:48 GMT'}]
2019-10-16
[array(['Garai', 'Arpan', ''], dtype=object) array(['Biswas', 'Samit', ''], dtype=object) array(['Mandal', 'Sekhar', ''], dtype=object) array(['Chaudhuri', 'Bidyut. B.', ''], dtype=object)]
2,332
2010.15922
Alessandro Pluchino
R. R. Corsini, A. Costa, S. Fichera, A.Pluchino
A configurable computer simulation model for reducing patient waiting time in oncology departments
40 pages, 3 figures, 7 tables
Health Systems (2022)
10.1080/20476965.2022.2030655
null
cs.CY physics.soc-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Nowadays, the increase in patient demand and the decline in resources are lengthening patient waiting times in many chemotherapy oncology departments. Therefore, enhancing healthcare services is necessary to reduce patient complaints. Reducing the patient waiting times in the oncology departments represents one of the main goals of healthcare manager. Simulation models are considered an effective tool for identifying potential ways to improve patient flow in oncology departments. This paper presents a new agent-based simulation model designed to be configurable and adaptable to the needs of oncology departments which have to interact with an external pharmacy. When external pharmacies are utilized, a courier service is needed to deliver the individual therapies from the pharmacy to the oncology department. An oncology department located in southern Italy was studied through the simulation model and different scenarios were compared with the aim of selecting the department configuration capable of reducing the patient waiting times.
[{'version': 'v1', 'created': 'Thu, 29 Oct 2020 20:11:41 GMT'} {'version': 'v2', 'created': 'Tue, 16 Feb 2021 12:05:25 GMT'} {'version': 'v3', 'created': 'Fri, 4 Jun 2021 12:38:11 GMT'} {'version': 'v4', 'created': 'Mon, 31 Jan 2022 10:32:53 GMT'}]
2022-02-01
[array(['Corsini', 'R. R.', ''], dtype=object) array(['Costa', 'A.', ''], dtype=object) array(['Fichera', 'S.', ''], dtype=object) array(['Pluchino', 'A.', ''], dtype=object)]
2,333
2005.11414
Larissa Romualdo Suzuki
Larissa Romualdo-Suzuki and Anthony Finkelstein
Data as Infrastructure for Smart Cities: Linking Data Platforms to Business Strategies
null
null
null
null
cs.CY
http://creativecommons.org/licenses/by-nc-sa/4.0/
The systems that operate the infrastructure of cities have evolved in a fragmented fashion across several generations of technology, causing city utilities and services to operate sub-optimally and limiting the creation of new value-added services and restrict opportunities for cost-saving. The integration of cross-domain city data offers a new wave of opportunities to mitigate some of these impacts and enables city systems to draw effectively on interoperable data that will be used to deliver smarter cities. Despite the considerable potential of city data, current smart cities initiatives have mainly addressed the problem of data management from a technology perspective, and have disregarded stakeholders and data needs. As a consequence, such initiatives are susceptible to failure from inadequate stakeholder input, requirements neglecting, and information fragmentation and overload. They are also likely to be limited in terms of both scalability and future proofing against technological, commercial and legislative change. This paper proposes a systematic business-modeldriven framework to guide the design of large and highly interconnected data infrastructures which are provided and supported by multiple stakeholders. The framework is used to model, elicit and reason about the requirements of the service, technology, organization, value, and governance aspects of smart cities. The requirements serve as an input to a closed-loop supply chain model, which is designed and managed to explicitly consider the activities and processes that enables the stakeholders of smart cities to efficiently leverage their collective knowledge. We demonstrate how our approach can be used to design data infrastructures by examining a series of exemplary scenarios and by demonstrating how our approach handles the holistic design of a data infrastructure and informs the decision making process.
[{'version': 'v1', 'created': 'Fri, 22 May 2020 22:53:05 GMT'}]
2020-05-26
[array(['Romualdo-Suzuki', 'Larissa', ''], dtype=object) array(['Finkelstein', 'Anthony', ''], dtype=object)]
2,334
2306.08263
Deepanshu Prasad
Charles Paquette, Deepanshu Prasad, David Wehlau
Semi-Invariant Rings: UFD and Codimension One Orbits
null
null
null
null
math.RT
http://creativecommons.org/licenses/by/4.0/
Let $A$ be a finite dimensional associative $\mathbb{K}$-algebra over an algebraically closed field $\mathbb{K}$ of characteristic zero. To $A$, we can associate its basic form that is given by a quiver $Q = (Q_0, Q_1)$ with an admissible ideal $R$. For a dimension vector $\beta$, we consider an irreducible component $\mathcal{C}$ of the module variety of $\beta$-dimensional representations of $A$. The reductive group ${\rm GL}_\beta(\mathbb{K}):= \prod_{i \in Q_0}{\rm GL}_{\beta_i}(\mathbb{K})$ acts on $\mathcal{C}$ by change of basis, and has a unique closed orbit. We consider the corresponding ring of semi-invariants ${\rm SI}(Q, \mathcal{C})$. We prove that if $\mathcal{C}$ is factorial and has maximal orbits of codimension one, then ${\rm SI}(Q, \mathcal{C})$ is a complete intersection and is not multiplicity free. If $\mathcal{C}$ is not factorial, then this conclusion does not necessarily hold. We present examples showing that the codimension of the complete intersection can be arbitrarily large. Finally, we interpret our results in the case of hereditary algebras.
[{'version': 'v1', 'created': 'Wed, 14 Jun 2023 05:57:46 GMT'}]
2023-06-16
[array(['Paquette', 'Charles', ''], dtype=object) array(['Prasad', 'Deepanshu', ''], dtype=object) array(['Wehlau', 'David', ''], dtype=object)]
2,335
hep-th/0703266
Nikolay Gromov
Nikolay Gromov, Pedro Vieira
Constructing the AdS/CFT dressing factor
5 figures
Nucl.Phys.B790:72-88,2008
10.1016/j.nuclphysb.2007.08.019
LPTENS-07/15
hep-th
null
We prove the universality of the Hernandez-Lopez phase by deriving it from first principles. We find a very simple integral representation for the phase and discuss its possible origin from a nested Bethe ansatz structure. Hopefully, the same kind of derivation could be used to constrain higher orders of the full quantum dressing factor.
[{'version': 'v1', 'created': 'Thu, 29 Mar 2007 17:44:01 GMT'}]
2008-11-26
[array(['Gromov', 'Nikolay', ''], dtype=object) array(['Vieira', 'Pedro', ''], dtype=object)]
2,336
gr-qc/9806059
Julio Cesar Fabris
J.C. Fabris (1), R. Kerner (2) and J. Tossa (3) ((1) Departamento de Fisica, Universidade Federal do Espirito Santo, (2) Laboratoire de Gravitation et Cosmologie Relativistes, Universite Pierre et Marie Curie, (3) IMSP, Universite du Benin)
Perturbative analysis of generalized Einstein's theories
14 pages, Latex file
Int.J.Mod.Phys. D9 (2000) 111-125
10.1142/S0218271800000116
DF/UFES-P003/98
gr-qc
null
The hypothesis that the energy-momentum tensor of ordinary matter is not conserved separately, leads to a non-adiabatic expansion and, in many cases, to an Universe older than usual. This may provide a solution for the entropy and age problems of the Standard Cosmological Model. We consider two different theories of this type, and we perform a perturbative analysis, leading to analytical expressions for the evolution of gravitational waves, rotational modes and density perturbations. One of these theories exhibits satisfactory properties at this level, while the other one should be discarded.
[{'version': 'v1', 'created': 'Fri, 12 Jun 1998 15:06:26 GMT'}]
2009-10-31
[array(['Fabris', 'J. C.', ''], dtype=object) array(['Kerner', 'R.', ''], dtype=object) array(['Tossa', 'J.', ''], dtype=object)]
2,337
1904.11249
Antonio Capolupo Dr
A. Capolupo and S.M. Giampaolo
Neutrino nature, total and geometric phase
5 pages, 2 figures, presented at 9th International Conference DICE2018: Spacetime - Matter - Quantum Mechanics : From discrete structures and dynamics to top-down causation
Physics Letters B Volume 792, 10 May 2019, Pages 298-303
10.1088/1742-6596/1275/1/012053
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the total and the geometric phase associated with neutrino mixing and we show that the phases produced by the neutrino oscillations have different values depending on the representation of the mixing matrix and on the neutrino nature. Therefore the phases represent a possible probe to distinguish between Dirac and Majorana neutrinos.
[{'version': 'v1', 'created': 'Thu, 25 Apr 2019 10:16:36 GMT'}]
2020-01-08
[array(['Capolupo', 'A.', ''], dtype=object) array(['Giampaolo', 'S. M.', ''], dtype=object)]
2,338
0811.2471
Peter Collas
Peter Collas and David Klein
Frame dragging anomalies for rotating bodies
This version adds minor clarifications to the original published version of this paper, which among other things remove the source of Culetu's objections in arXiv:0811.4592. In addition, a reference is added with further acknowledgments
Gen.Rel.Grav.36:1197,2004
10.1023/B:GERG.0000018286.98387.64
null
gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Examples of axially symmetric solutions to Einstein's field equations are given that exhibit anomalous "negative frame dragging" in the sense that zero angular momentum test particles acquire angular velocities in the opposite direction of rotation from the source of the metric.
[{'version': 'v1', 'created': 'Sat, 15 Nov 2008 09:48:05 GMT'} {'version': 'v2', 'created': 'Fri, 5 Dec 2008 23:40:24 GMT'}]
2008-12-18
[array(['Collas', 'Peter', ''], dtype=object) array(['Klein', 'David', ''], dtype=object)]
2,339
1410.4034
Fran\c{c}ois Gonze FG
Fran\c{c}ois Gonze and Rapha\"el M. Jungers
On the Synchronizing Probability Function and the Triple Rendezvous Time for Synchronizing Automata
A preliminary version of the results has been presented at the conference LATA 2015. The current ArXiv version includes the most recent improvement on the triple rendezvous time upper bound as well as formal proofs of all the results
null
null
null
cs.FL
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Cerny's conjecture is a longstanding open problem in automata theory. We study two different concepts, which allow to approach it from a new angle. The first one is the triple rendezvous time, i.e., the length of the shortest word mapping three states onto a single one. The second one is the synchronizing probability function of an automaton, a recently introduced tool which reinterprets the synchronizing phenomenon as a two-player game, and allows to obtain optimal strategies through a Linear Program. Our contribution is twofold. First, by coupling two different novel approaches based on the synchronizing probability function and properties of linear programming, we obtain a new upper bound on the triple rendezvous time. Second, by exhibiting a family of counterexamples, we disprove a conjecture on the growth of the synchronizing probability function. We then suggest natural follow-ups towards Cernys conjecture.
[{'version': 'v1', 'created': 'Wed, 15 Oct 2014 12:18:05 GMT'} {'version': 'v2', 'created': 'Thu, 16 Oct 2014 11:38:07 GMT'} {'version': 'v3', 'created': 'Mon, 24 Nov 2014 15:42:30 GMT'} {'version': 'v4', 'created': 'Mon, 5 Jan 2015 17:40:08 GMT'} {'version': 'v5', 'created': 'Fri, 18 Dec 2015 10:56:47 GMT'}]
2015-12-21
[array(['Gonze', 'François', ''], dtype=object) array(['Jungers', 'Raphaël M.', ''], dtype=object)]
2,340
1711.08512
Son-Il Kwak
Choe Un-Chol, Yun Kum-Il, Kwak Son-Il
A Study on Modeling of Inputting Electrical Power of Ultra High Power Electric Furnace by using Fuzzy Rule and Regression Model
8 pages, 3 figures, 1 table
null
null
null
cs.SY cs.AI
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
: In this paper a method to make inputting electrical model upon factors that affect melting process of high ultra power(UHP) electric furnace by using fuzzy rule and regression model is suggested and its effectiveness is verified with simulation experiment.
[{'version': 'v1', 'created': 'Tue, 21 Nov 2017 07:31:28 GMT'}]
2017-11-27
[array(['Un-Chol', 'Choe', ''], dtype=object) array(['Kum-Il', 'Yun', ''], dtype=object) array(['Son-Il', 'Kwak', ''], dtype=object)]
2,341
1212.1047
Kaifu Luo
Junfang Sheng and Kaifu Luo
Chain conformation of ring polymers under a cylindrical nanochannel confinement
5 pages, 3 figures
Phys. Rev. E 86, 031803 (2012)
10.1103/PhysRevE.86.031803
null
cond-mat.soft physics.bio-ph q-bio.BM
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate the chain conformation of ring polymers confined to a cylindrical nanochannel using both theoretical analysis and three dimensional Langevin dynamics simulations. We predict that the longitudinal size of a ring polymer scales with the chain length and the diameter of the channel in the same manner as that for linear chains based on scaling analysis and Flory-type theory. Moreover, Flory-type theory also gives the ratio of the longitudinal sizes for a ring polymer and a linear chain with identical chain length. These theoretical predictions are confirmed by numerical simulations. Finally, our simulation results show that this ratio first decreases and then saturates with increasing the chain stiffness, which has interpreted the discrepancy in experiments. Our results have biological significance.
[{'version': 'v1', 'created': 'Wed, 5 Dec 2012 15:19:30 GMT'}]
2012-12-06
[array(['Sheng', 'Junfang', ''], dtype=object) array(['Luo', 'Kaifu', ''], dtype=object)]
2,342
math/0204259
Emilia Mezzetti
Maria Lucia Fania and Emilia Mezzetti
On the Hilbert scheme of Palatini threefolds
To be published in Advances in Geometry
null
null
null
math.AG
null
We study the Hilbert scheme of Palatini threefolds X in P^5. We prove that such a scheme has an irreducible component containing X which is birational to the Grassmannian G(3,14) and we determine the exceptional locus of the birational map.
[{'version': 'v1', 'created': 'Mon, 22 Apr 2002 16:36:20 GMT'}]
2007-05-23
[array(['Fania', 'Maria Lucia', ''], dtype=object) array(['Mezzetti', 'Emilia', ''], dtype=object)]
2,343
math/0404163
Bassam Fayad
Bassam Fayad
Non uniform hyperbolicity and elliptic dynamics
6 pages, 0 figure
null
null
null
math.DS
null
We present some constructions that are merely the fruit of combining recent results from two areas of smooth dynamics: nonuniformly hyperbolic systems and elliptic constructions.
[{'version': 'v1', 'created': 'Wed, 7 Apr 2004 13:47:05 GMT'}]
2007-05-23
[array(['Fayad', 'Bassam', ''], dtype=object)]
2,344
1511.09439
Xiaowei Zhou
Xiaowei Zhou, Menglong Zhu, Spyridon Leonardos, Kosta Derpanis, Kostas Daniilidis
Sparseness Meets Deepness: 3D Human Pose Estimation from Monocular Video
Published in CVPR2016
null
null
null
cs.CV
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This paper addresses the challenge of 3D full-body human pose estimation from a monocular image sequence. Here, two cases are considered: (i) the image locations of the human joints are provided and (ii) the image locations of joints are unknown. In the former case, a novel approach is introduced that integrates a sparsity-driven 3D geometric prior and temporal smoothness. In the latter case, the former case is extended by treating the image locations of the joints as latent variables. A deep fully convolutional network is trained to predict the uncertainty maps of the 2D joint locations. The 3D pose estimates are realized via an Expectation-Maximization algorithm over the entire sequence, where it is shown that the 2D joint location uncertainties can be conveniently marginalized out during inference. Empirical evaluation on the Human3.6M dataset shows that the proposed approaches achieve greater 3D pose estimation accuracy over state-of-the-art baselines. Further, the proposed approach outperforms a publicly available 2D pose estimation baseline on the challenging PennAction dataset.
[{'version': 'v1', 'created': 'Mon, 30 Nov 2015 19:41:06 GMT'} {'version': 'v2', 'created': 'Thu, 28 Apr 2016 14:53:43 GMT'}]
2016-04-29
[array(['Zhou', 'Xiaowei', ''], dtype=object) array(['Zhu', 'Menglong', ''], dtype=object) array(['Leonardos', 'Spyridon', ''], dtype=object) array(['Derpanis', 'Kosta', ''], dtype=object) array(['Daniilidis', 'Kostas', ''], dtype=object)]
2,345
astro-ph/9905066
Leslie Hunt
L.K. Hunt, M.A. Malkan, B. Rush, M.D. Bicay, B.O. Nelson, R.M. Stanga, & W. Webb
Morphology of the 12-micron Seyfert Galaxies: II. Optical and Near-Infrared Image Atlas
17 pgs including figures; Table 2 is a separate file. Complete Figure 1 is available by contacting the authors. Accepted for publication in ApJS
Astrophys.J.Suppl. 125 (2000) 349-362
10.1086/313279
Arcetri Preprint 16/99
astro-ph
null
We present 263 optical and near-infrared (NIR) images for 42 Seyfert 1s and 48 Seyfert 2s, selected from the Extended 12-micron Galaxy Sample. Elliptically-averaged profiles are derived from the images, and isophotal radii and magnitudes are calculated from these. We also report virtual aperture photometry, that judging from comparison with previous work, is accurate to roughly 0.05mag in the optical, and 0.07mag in the NIR. Our B-band isophotal magnitude and radii, obtained from ellipse fitting, are in good agreement with those of RC3. When compared with the B band, V, I, J, and K isophotal diameters show that the colors in the outer regions of Seyferts are consistent with the colors of normal spirals. Differences in the integrated isophotal colors and comparison with a simple model show that the active nucleus+bulge is stronger and redder in the NIR than in the optical. Finally, roughly estimated Seyfert disk surface brightnesses are significantly brighter in B and K than those in normal spirals of similar morphological type.
[{'version': 'v1', 'created': 'Thu, 6 May 1999 12:51:13 GMT'}]
2009-10-31
[array(['Hunt', 'L. K.', ''], dtype=object) array(['Malkan', 'M. A.', ''], dtype=object) array(['Rush', 'B.', ''], dtype=object) array(['Bicay', 'M. D.', ''], dtype=object) array(['Nelson', 'B. O.', ''], dtype=object) array(['Stanga', 'R. M.', ''], dtype=object) array(['Webb', 'W.', ''], dtype=object)]
2,346
2012.10445
Rebecca Davies
Rebecca L. Davies, N. M. F\"orster Schreiber, R. Genzel, T. T. Shimizu, R. I. Davies, A. Schruba, L. J. Tacconi, H. \"Ubler, E. Wisnioski, S. Wuyts, M. Fossati, R. Herrera-Camus, D. Lutz, J. T. Mendel, T. Naab, S. H. Price, A. Renzini, D. Wilman, A. Beifiori, S. Belli, A. Burkert, J. Chan, A. Contursi, M. Fabricius, M. M. Lee, R. P. Saglia, and A. Sternberg
The KMOS$^{\rm 3D}$ Survey: Investigating the Origin of the Elevated Electron Densities in Star-Forming Galaxies at $1\lesssim{z}\lesssim{3}$
Main text 24 pages, 8 figures. Accepted for publication in ApJ
null
10.3847/1538-4357/abd551
null
astro-ph.GA
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We investigate what drives the redshift evolution of the typical electron density ($n_e$) in star-forming galaxies, using a sample of 140 galaxies drawn primarily from KMOS$^{\rm 3D}$ ($0.6\lesssim{z}\lesssim{2.6}$) and 471 galaxies from SAMI ($z<0.113$). We select galaxies that do not show evidence of AGN activity or outflows, to constrain the average conditions within H II regions. Measurements of the [SII]$\lambda$6716/[SII]$\lambda$6731 ratio in four redshift bins indicate that the local $n_e$ in the line-emitting material decreases from 187$^{+140}_{-132}$ cm$^{-3}$ at $z\sim$ 2.2 to 32$^{+4}_{-9}$ cm$^{-3}$ at $z\sim$ 0; consistent with previous results. We use the H$\alpha$ luminosity to estimate the root-mean-square (rms) $n_e$ averaged over the volumes of star-forming disks at each redshift. The local and volume-averaged $n_e$ evolve at similar rates, hinting that the volume filling factor of the line-emitting gas may be approximately constant across $0\lesssim{z}\lesssim{2.6}$. The KMOS$^{\rm 3D}$ and SAMI galaxies follow a roughly monotonic trend between $n_e$ and star formation rate, but the KMOS$^{\rm 3D}$ galaxies have systematically higher $n_e$ than the SAMI galaxies at fixed offset from the star-forming main sequence, suggesting a link between the $n_e$ evolution and the evolving main sequence normalization. We quantitatively test potential drivers of the density evolution and find that $n_e$(rms) $\simeq{n_{H_2}}$, suggesting that the elevated $n_e$ in high-$z$ H II regions could plausibly be the direct result of higher densities in the parent molecular clouds. There is also tentative evidence that $n_e$ could be influenced by the balance between stellar feedback, which drives the expansion of H II regions, and the ambient pressure, which resists their expansion.
[{'version': 'v1', 'created': 'Fri, 18 Dec 2020 18:59:55 GMT'}]
2021-03-17
[array(['Davies', 'Rebecca L.', ''], dtype=object) array(['Schreiber', 'N. M. Förster', ''], dtype=object) array(['Genzel', 'R.', ''], dtype=object) array(['Shimizu', 'T. T.', ''], dtype=object) array(['Davies', 'R. I.', ''], dtype=object) array(['Schruba', 'A.', ''], dtype=object) array(['Tacconi', 'L. J.', ''], dtype=object) array(['Übler', 'H.', ''], dtype=object) array(['Wisnioski', 'E.', ''], dtype=object) array(['Wuyts', 'S.', ''], dtype=object) array(['Fossati', 'M.', ''], dtype=object) array(['Herrera-Camus', 'R.', ''], dtype=object) array(['Lutz', 'D.', ''], dtype=object) array(['Mendel', 'J. T.', ''], dtype=object) array(['Naab', 'T.', ''], dtype=object) array(['Price', 'S. H.', ''], dtype=object) array(['Renzini', 'A.', ''], dtype=object) array(['Wilman', 'D.', ''], dtype=object) array(['Beifiori', 'A.', ''], dtype=object) array(['Belli', 'S.', ''], dtype=object) array(['Burkert', 'A.', ''], dtype=object) array(['Chan', 'J.', ''], dtype=object) array(['Contursi', 'A.', ''], dtype=object) array(['Fabricius', 'M.', ''], dtype=object) array(['Lee', 'M. M.', ''], dtype=object) array(['Saglia', 'R. P.', ''], dtype=object) array(['Sternberg', 'A.', ''], dtype=object)]
2,347
cond-mat/0112131
Francois Leyvraz
F. Leyvraz and S. Ruffo
Ensemble inequivalence: A formal approach
4 pages, no figures, given at the NEXT2001 conference on non-extensive thermodynamics
null
10.1016/S0378-4371(01)00640-9
null
cond-mat.stat-mech
null
Ensemble inequivalence has been observed in several systems. In particular it has been recently shown that negative specific heat can arise in the microcanonical ensemble in the thermodynamic limit for systems with long-range interactions. We display a connection between such behaviour and a mean-field like structure of the partition function. Since short-range models cannot display this kind of behaviour, this strongly suggests that such systems are necessarily non-mean field in the sense indicated here. We further show that a broad class of systems with non-integrable interactions are indeed of mean-field type in the sense specified, so that they are expected to display ensemble inequivalence as well as the peculiar behaviour described above in the microcanonical ensemble.
[{'version': 'v1', 'created': 'Fri, 7 Dec 2001 19:05:20 GMT'}]
2015-06-24
[array(['Leyvraz', 'F.', ''], dtype=object) array(['Ruffo', 'S.', ''], dtype=object)]
2,348
1304.7275
Mark Van Raamsdonk
Connor Behan, Klaus Larjo, Nima Lashkari, Brian Swingle, Mark Van Raamsdonk
Energy trapping from Hagedorn densities of states
25 pages, LaTeX, 8 figures
null
10.1007/JHEP10(2013)063
null
hep-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this note, we construct simple stochastic toy models for holographic gauge theories in which distributions of energy on a collection of sites evolve by a master equation with some specified transition rates. We build in only energy conservation, locality, and the standard thermodynamic requirement that all states with a given energy are equally likely in equilibrium. In these models, we investigate the qualitative behavior of the dynamics of the energy distributions for different choices of the density of states for the individual sites. For typical field theory densities of states (\log(\rho(E)) ~ E^{\alpha<1}), the model gives diffusive behavior in which initially localized distributions of energy spread out relatively quickly. For large N gauge theories with gravitational duals, the density of states for a finite volume of field theory degrees of freedom typically includes a Hagedorn regime (\log(\rho(E)) ~ E). We find that this gives rise to a trapping of energy in subsets of degrees of freedom for parametrically long time scales before the energy leaks away. We speculate that this Hagedorn trapping may be part of a holographic explanation for long-lived gravitational bound states (black holes) in gravitational theories.
[{'version': 'v1', 'created': 'Fri, 26 Apr 2013 20:09:20 GMT'}]
2015-06-15
[array(['Behan', 'Connor', ''], dtype=object) array(['Larjo', 'Klaus', ''], dtype=object) array(['Lashkari', 'Nima', ''], dtype=object) array(['Swingle', 'Brian', ''], dtype=object) array(['Van Raamsdonk', 'Mark', ''], dtype=object)]
2,349
cond-mat/0606285
Marcus Kollar
X. Ren, I. Leonov, G. Keller, M. Kollar, I. Nekrasov, and D. Vollhardt
LDA+DMFT computation of the electronic spectrum of NiO
15 pages, 6 figures, 1 table; published version
Phys. Rev. B 74, 195114 (2006)
10.1103/PhysRevB.74.195114
null
cond-mat.str-el
null
The electronic spectrum, energy gap and local magnetic moment of paramagnetic NiO are computed by using the local density approximation plus dynamical mean-field theory (LDA+DMFT). To this end the noninteracting Hamiltonian obtained within the local density approximation (LDA) is expressed in Wannier functions basis, with only the five anti-bonding bands with mainly Ni 3d character taken into account. Complementing it by local Coulomb interactions one arrives at a material-specific many-body Hamiltonian which is solved by DMFT together with quantum Monte-Carlo (QMC) simulations. The large insulating gap in NiO is found to be a result of the strong electronic correlations in the paramagnetic state. In the vicinity of the gap region, the shape of the electronic spectrum calculated in this way is in good agreement with the experimental x-ray-photoemission and bremsstrahlung-isochromat-spectroscopy results of Sawatzky and Allen. The value of the local magnetic moment computed in the paramagnetic phase (PM) agrees well with that measured in the antiferromagnetic (AFM) phase. Our results for the electronic spectrum and the local magnetic moment in the PM phase are in accordance with the experimental finding that AFM long-range order has no significant influence on the electronic structure of NiO.
[{'version': 'v1', 'created': 'Mon, 12 Jun 2006 13:49:35 GMT'} {'version': 'v2', 'created': 'Thu, 14 Dec 2006 14:12:41 GMT'}]
2007-05-23
[array(['Ren', 'X.', ''], dtype=object) array(['Leonov', 'I.', ''], dtype=object) array(['Keller', 'G.', ''], dtype=object) array(['Kollar', 'M.', ''], dtype=object) array(['Nekrasov', 'I.', ''], dtype=object) array(['Vollhardt', 'D.', ''], dtype=object)]
2,350
astro-ph/0206352
Fumitaka Nakamura
Zhi-Yun Li (Univ. of Virginia) and Fumitaka Nakamura (Niigata Univ., UC Berkeley)
Fragmentation of Magnetically Subcritical Clouds into Multiple Supercritical Cores and the Formation of Small Stellar Groups
16 pages, 5 figures, accepted by ApJ
Astrophys.J. 578 (2002) 256-268; Erratum-ibid. 583 (2003) 1063
10.1086/342320
null
astro-ph
null
Isolated low-mass stars are formed in dense cores of molecular clouds. In the standard picture, the cores are envisioned to condense out of strongly magnetized clouds through ambipolar diffusion. Most previous calculations based on this scenario are limited to axisymmetric cloud evolution leading to a single core, which collapses to form an isolated star or stellar system at the center. These calculations are here extended to the nonaxisymmetric case under thin-disk approximation, which allows for a detailed investigation into the process of fragmentation, fundamental to binary, multiple system, and cluster formation. We have shown previously that initially axisymmetric, magnetically subcritical clouds with an $m=2$ density perturbation of modest fractional amplitude ($\sim 5%$) can develop highly elongated bars, which facilitate binary and multiple system formation. In this paper, we show that in the presence of higher order ($m\ge 3$) perturbations of similar amplitude such clouds are capable of breaking up into a set of discrete dense cores. These multiple cores are magnetically supercritical. They are expected to collapse into single stars or stellar systems individually and, collectively, to form a small stellar group. Our calculations demonstrate that the standard scenario for single star formation involving magnetically subcritical clouds and ambipolar diffusion can readily produce more than one star, provided that the cloud mass is well above the Jeans limit and relatively uniformly distributed. The fragments develop in the central part of the cloud, after the region has become magnetically supercritical but before rapid collapse sets in. It is enhanced by the flattening of mass distribution along the field lines and by the magnetic tension force.
[{'version': 'v1', 'created': 'Thu, 20 Jun 2002 08:59:19 GMT'}]
2009-11-07
[array(['Li', 'Zhi-Yun', '', 'Univ. of Virginia'], dtype=object) array(['Nakamura', 'Fumitaka', '', 'Niigata Univ.,\n UC Berkeley'], dtype=object) ]
2,351
2302.03837
Chi-Man Pun
Zi-yu Jiang, Chi-Man Pun, Xiao-Chen Yuan, Tong Liu
Robust Digital Watermarking Method Based on Adaptive Feature Area Extraction and Local Histogram Shifting
null
null
null
null
cs.MM
http://creativecommons.org/licenses/by-nc-nd/4.0/
A new local watermarking method based on histogram shifting has been proposed in this paper to deal with various signal processing attacks (e.g. median filtering, JPEG compression and Gaussian noise addition) and geometric attacks (e.g. rotation, scaling and cropping). A feature detector is used to select local areas for embedding. Then stationary wavelet transform (SWT) is applied on each local area for denoising by setting the corresponding diagonal coefficients to zero. With the implementation of histogram shifting, the watermark is embedded into denoised local areas. Meanwhile, a secret key is used in the embedding process which ensures the security that the watermark cannot be easily hacked. After the embedding process, the SWT diagonal coefficients are used to reconstruct the watermarked image. With the proposed watermarking method, we can achieve higher image quality and less bit error rate (BER) in the decoding process even after some attacks. Compared with global watermarking methods, the proposed watermarking scheme based on local histogram shifting has the advantages of higher security and larger capacity. The experimental results show the better image quality as well as lower BER compared with the state-of-art watermarking methods.
[{'version': 'v1', 'created': 'Wed, 8 Feb 2023 02:13:09 GMT'}]
2023-02-09
[array(['Jiang', 'Zi-yu', ''], dtype=object) array(['Pun', 'Chi-Man', ''], dtype=object) array(['Yuan', 'Xiao-Chen', ''], dtype=object) array(['Liu', 'Tong', ''], dtype=object)]
2,352
1710.03870
Matthew Dixon
Matthew F Dixon
A High Frequency Trade Execution Model for Supervised Learning
arXiv admin note: substantial text overlap with arXiv:1707.05642, High Frequency, 2018
null
null
null
q-fin.TR
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This paper introduces a high frequency trade execution model to evaluate the economic impact of supervised machine learners. Extending the concept of a confusion matrix, we present a 'trade information matrix' to attribute the expected profit and loss of the high frequency strategy under execution constraints, such as fill probabilities and position dependent trade rules, to correct and incorrect predictions. We apply the trade execution model and trade information matrix to Level II E-mini S&P 500 futures history and demonstrate an estimation approach for measuring the sensitivity of the P&L to the error of a Recurrent Neural Network. Our approach directly evaluates the performance sensitivity of a market making strategy to prediction error and augments traditional market simulation based testing.
[{'version': 'v1', 'created': 'Wed, 11 Oct 2017 00:57:26 GMT'} {'version': 'v2', 'created': 'Thu, 12 Oct 2017 16:38:59 GMT'} {'version': 'v3', 'created': 'Tue, 5 Dec 2017 16:56:57 GMT'}]
2017-12-06
[array(['Dixon', 'Matthew F', ''], dtype=object)]
2,353
2302.07868
Atabey \"Unl\"u
Atabey \"Unl\"u, Elif \c{C}evrim, Ahmet Sar{\i}g\"un, Hayriye \c{C}elikbilek, Heval Ata\c{s} G\"uvenilir, Altay Koya\c{s}, Deniz Cansen Kahraman, Abdurrahman Ol\u{g}a\c{c}, Ahmet Rifaio\u{g}lu, Tunca Do\u{g}an
Target Specific De Novo Design of Drug Candidate Molecules with Graph Transformer-based Generative Adversarial Networks
null
null
null
null
cs.LG q-bio.BM q-bio.QM
http://creativecommons.org/licenses/by-nc-sa/4.0/
Discovering novel drug candidate molecules is one of the most fundamental and critical steps in drug development. Generative deep learning models, which create synthetic data given a probability distribution, have been developed with the purpose of picking completely new samples from a partially known space. Generative models offer high potential for designing de novo molecules; however, in order for them to be useful in real-life drug development pipelines, these models should be able to design target-specific molecules, which is the next step in this field. In this study, we propose DrugGEN, for the de novo design of drug candidate molecules that interact with selected target proteins. The proposed system represents compounds and protein structures as graphs and processes them via serially connected two generative adversarial networks comprising graph transformers. DrugGEN is trained using a large dataset of compounds from ChEMBL and target-specific bioactive molecules, to design effective and specific inhibitory molecules against the AKT1 protein, which has critical importance for developing treatments against various types of cancer. On fundamental benchmarks, DrugGEN models have either competitive or better performance against other methods. To assess the target-specific generation performance, we conducted further in silico analysis with molecular docking and deep learning-based bioactivity prediction. Results indicate that de novo molecules have high potential for interacting with the AKT1 protein structure in the level of its native ligand. DrugGEN can be used to design completely novel and effective target-specific drug candidate molecules for any druggable protein, given target features and a dataset of experimental bioactivities. Code base, datasets, results and trained models of DrugGEN are available at https://github.com/HUBioDataLab/DrugGEN
[{'version': 'v1', 'created': 'Wed, 15 Feb 2023 18:59:27 GMT'} {'version': 'v2', 'created': 'Thu, 16 Feb 2023 13:31:13 GMT'} {'version': 'v3', 'created': 'Fri, 17 Feb 2023 17:33:55 GMT'} {'version': 'v4', 'created': 'Mon, 20 Feb 2023 11:00:00 GMT'} {'version': 'v5', 'created': 'Thu, 9 Mar 2023 14:12:12 GMT'}]
2023-03-10
[array(['Ünlü', 'Atabey', ''], dtype=object) array(['Çevrim', 'Elif', ''], dtype=object) array(['Sarıgün', 'Ahmet', ''], dtype=object) array(['Çelikbilek', 'Hayriye', ''], dtype=object) array(['Güvenilir', 'Heval Ataş', ''], dtype=object) array(['Koyaş', 'Altay', ''], dtype=object) array(['Kahraman', 'Deniz Cansen', ''], dtype=object) array(['Olğaç', 'Abdurrahman', ''], dtype=object) array(['Rifaioğlu', 'Ahmet', ''], dtype=object) array(['Doğan', 'Tunca', ''], dtype=object)]
2,354
1909.05860
Katherine Woodruff
K. Woodruff, J. Baeza-Rubio, D. Huerta, B. J. P. Jones, A. D. McDonald, L. Norman, D.R. Nygren, C. Adams, V. \'Alvarez, L. Arazi, I.J. Arnquist, C.D.R Azevedo, K. Bailey, F. Ballester, J.M. Benlloch-Rodr\'iguez, F.I.G.M. Borges, N.K. Byrnes, S. C\'arcel, J.V. Carri\'on, S. Cebri\'an, E. Church, C.A.N. Conde, T. Contreras, A.A. Denisenko, G. D\'iaz, J. D\'iaz, M. Diesburg, J. Escada, R. Esteve, R. Felkai, A.F.M. Fernandes, L.M.P. Fernandes, P. Ferrario, A.L. Ferreira, F.W. Foss Jr., E.D.C. Freitas, J. Generowicz, A. Goldschmidt, D. Gonz\'alez-D\'iaz, J.J. G\'omez-Cadenas, S. Ghosh, R. Guenette, R.M. Guti\'errez, J. Haefner, K. Hafidi, J. Hauptman, C.A.O. Henriques, J.A. Hernando Morata, P. Herrero, V. Herrero, S. Johnston, M. Kekic, L. Labarga, A. Laing, P. Lebrun, N. L\'opez-March, M. Losada, R.D.P. Mano, J. Mart\'in-Albo, A. Mart\'inez, G. Mart\'inez-Lema, F. Monrabal, C.M.B. Monteiro, F.J. Mora, J. Mu\~noz Vidal, P. Novella, B. Palmeiro, A. Para, J. P\'erez, M. Querol, J. Renner, J. Repond, S. Riordan, L. Ripoll, Y. Rodriguez Garcia, J. Rodr\'iguez, L. Rogers, B. Romeo, C. Romo-Luque, F.P. Santos, J.M.F. dos Santos, A. Sim\'on, C. Sofka, M. Sorel, T. Stiegler, P. Thapa, J.F. Toledo, J. Torrent, A. Us\'on, J.F.C.A. Veloso, R. Webb, R. Weiss-Babai, J.T. White, N. Yahlali
Radio Frequency and DC High Voltage Breakdown of High Pressure Helium, Argon, and Xenon
null
null
10.1088/1748-0221/15/04/P04022
null
physics.ins-det nucl-ex
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Motivated by the possibility of guiding daughter ions from double beta decay events to single-ion sensors for barium tagging, the NEXT collaboration is developing a program of R&D to test radio frequency (RF) carpets for ion transport in high pressure xenon gas. This would require carpet functionality in regimes at higher pressures than have been previously reported, implying correspondingly larger electrode voltages than in existing systems. This mode of operation appears plausible for contemporary RF-carpet geometries due to the higher predicted breakdown strength of high pressure xenon relative to low pressure helium, the working medium in most existing RF carpet devices. In this paper we present the first measurements of the high voltage dielectric strength of xenon gas at high pressure and at the relevant RF frequencies for ion transport (in the 10 MHz range), as well as new DC and RF measurements of the dielectric strengths of high pressure argon and helium gases at small gap sizes. We find breakdown voltages that are compatible with stable RF carpet operation given the gas, pressure, voltage, materials and geometry of interest.
[{'version': 'v1', 'created': 'Thu, 12 Sep 2019 17:31:21 GMT'} {'version': 'v2', 'created': 'Tue, 10 Dec 2019 22:40:55 GMT'} {'version': 'v3', 'created': 'Thu, 23 Apr 2020 22:01:02 GMT'}]
2020-06-17
[array(['Woodruff', 'K.', ''], dtype=object) array(['Baeza-Rubio', 'J.', ''], dtype=object) array(['Huerta', 'D.', ''], dtype=object) array(['Jones', 'B. J. P.', ''], dtype=object) array(['McDonald', 'A. D.', ''], dtype=object) array(['Norman', 'L.', ''], dtype=object) array(['Nygren', 'D. R.', ''], dtype=object) array(['Adams', 'C.', ''], dtype=object) array(['Álvarez', 'V.', ''], dtype=object) array(['Arazi', 'L.', ''], dtype=object) array(['Arnquist', 'I. J.', ''], dtype=object) array(['Azevedo', 'C. D. R', ''], dtype=object) array(['Bailey', 'K.', ''], dtype=object) array(['Ballester', 'F.', ''], dtype=object) array(['Benlloch-Rodríguez', 'J. M.', ''], dtype=object) array(['Borges', 'F. I. G. M.', ''], dtype=object) array(['Byrnes', 'N. K.', ''], dtype=object) array(['Cárcel', 'S.', ''], dtype=object) array(['Carrión', 'J. V.', ''], dtype=object) array(['Cebrián', 'S.', ''], dtype=object) array(['Church', 'E.', ''], dtype=object) array(['Conde', 'C. A. N.', ''], dtype=object) array(['Contreras', 'T.', ''], dtype=object) array(['Denisenko', 'A. A.', ''], dtype=object) array(['Díaz', 'G.', ''], dtype=object) array(['Díaz', 'J.', ''], dtype=object) array(['Diesburg', 'M.', ''], dtype=object) array(['Escada', 'J.', ''], dtype=object) array(['Esteve', 'R.', ''], dtype=object) array(['Felkai', 'R.', ''], dtype=object) array(['Fernandes', 'A. F. M.', ''], dtype=object) array(['Fernandes', 'L. M. P.', ''], dtype=object) array(['Ferrario', 'P.', ''], dtype=object) array(['Ferreira', 'A. L.', ''], dtype=object) array(['Foss', 'F. W.', 'Jr.'], dtype=object) array(['Freitas', 'E. D. C.', ''], dtype=object) array(['Generowicz', 'J.', ''], dtype=object) array(['Goldschmidt', 'A.', ''], dtype=object) array(['González-Díaz', 'D.', ''], dtype=object) array(['Gómez-Cadenas', 'J. J.', ''], dtype=object) array(['Ghosh', 'S.', ''], dtype=object) array(['Guenette', 'R.', ''], dtype=object) array(['Gutiérrez', 'R. M.', ''], dtype=object) array(['Haefner', 'J.', ''], dtype=object) array(['Hafidi', 'K.', ''], dtype=object) array(['Hauptman', 'J.', ''], dtype=object) array(['Henriques', 'C. A. O.', ''], dtype=object) array(['Morata', 'J. A. Hernando', ''], dtype=object) array(['Herrero', 'P.', ''], dtype=object) array(['Herrero', 'V.', ''], dtype=object) array(['Johnston', 'S.', ''], dtype=object) array(['Kekic', 'M.', ''], dtype=object) array(['Labarga', 'L.', ''], dtype=object) array(['Laing', 'A.', ''], dtype=object) array(['Lebrun', 'P.', ''], dtype=object) array(['López-March', 'N.', ''], dtype=object) array(['Losada', 'M.', ''], dtype=object) array(['Mano', 'R. D. P.', ''], dtype=object) array(['Martín-Albo', 'J.', ''], dtype=object) array(['Martínez', 'A.', ''], dtype=object) array(['Martínez-Lema', 'G.', ''], dtype=object) array(['Monrabal', 'F.', ''], dtype=object) array(['Monteiro', 'C. M. B.', ''], dtype=object) array(['Mora', 'F. J.', ''], dtype=object) array(['Vidal', 'J. Muñoz', ''], dtype=object) array(['Novella', 'P.', ''], dtype=object) array(['Palmeiro', 'B.', ''], dtype=object) array(['Para', 'A.', ''], dtype=object) array(['Pérez', 'J.', ''], dtype=object) array(['Querol', 'M.', ''], dtype=object) array(['Renner', 'J.', ''], dtype=object) array(['Repond', 'J.', ''], dtype=object) array(['Riordan', 'S.', ''], dtype=object) array(['Ripoll', 'L.', ''], dtype=object) array(['Garcia', 'Y. Rodriguez', ''], dtype=object) array(['Rodríguez', 'J.', ''], dtype=object) array(['Rogers', 'L.', ''], dtype=object) array(['Romeo', 'B.', ''], dtype=object) array(['Romo-Luque', 'C.', ''], dtype=object) array(['Santos', 'F. P.', ''], dtype=object) array(['Santos', 'J. M. F. dos', ''], dtype=object) array(['Simón', 'A.', ''], dtype=object) array(['Sofka', 'C.', ''], dtype=object) array(['Sorel', 'M.', ''], dtype=object) array(['Stiegler', 'T.', ''], dtype=object) array(['Thapa', 'P.', ''], dtype=object) array(['Toledo', 'J. F.', ''], dtype=object) array(['Torrent', 'J.', ''], dtype=object) array(['Usón', 'A.', ''], dtype=object) array(['Veloso', 'J. F. C. A.', ''], dtype=object) array(['Webb', 'R.', ''], dtype=object) array(['Weiss-Babai', 'R.', ''], dtype=object) array(['White', 'J. T.', ''], dtype=object) array(['Yahlali', 'N.', ''], dtype=object)]
2,355
1707.03868
Vo Tien Phong
Vo Tien Phong, Niels R. Walet, and Francisco Guinea
Effective Interactions in a Graphene Layer Induced by the Proximity to a Ferromagnet
10 pages, 3 figures, 3 tables
2D Materials 5, no. 1 (2017): 014004
10.1088/2053-1583/aa9fca
null
cond-mat.mes-hall
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The proximity-induced couplings in graphene due to the vicinity of a ferromagnetic insulator are analyzed. We combine general symmetry principles and simple tight-binding descriptions to consider different orientations of the magnetization. We find that, in addition to a simple exchange field, a number of other terms arise. Some of these terms act as magnetic orbital couplings, and others are proximity-induced spin-orbit interactions. The couplings are of similar order of magnitude, and depend on the orientation of the magnetization. A variety of phases, and anomalous Hall effect regimes, are possible.
[{'version': 'v1', 'created': 'Wed, 12 Jul 2017 19:02:44 GMT'}]
2019-10-15
[array(['Phong', 'Vo Tien', ''], dtype=object) array(['Walet', 'Niels R.', ''], dtype=object) array(['Guinea', 'Francisco', ''], dtype=object)]
2,356
2208.04159
Ningning Wang
Ningning Wang, Guodong Li, Sihuang Hu, Min Ye
Constructing MSR codes with subpacketization $2^{n/3}$ for $k+1$ helper nodes
null
IEEE Transactions on Information Theory (Volume: 69, Issue: 6, June 2023)
10.1109/TIT.2023.3238759
null
cs.IT math.IT
http://creativecommons.org/licenses/by/4.0/
Wang et al. (IEEE Transactions on Information Theory, vol. 62, no. 8, 2016) proposed an explicit construction of an $(n=k+2,k)$ Minimum Storage Regenerating (MSR) code with $2$ parity nodes and subpacketization $2^{k/3}$. The number of helper nodes for this code is $d=k+1=n-1$, and this code has the smallest subpacketization among all the existing explicit constructions of MSR codes with the same $n,k$ and $d$. In this paper, we present a new construction of MSR codes for a wider range of parameters. More precisely, we still fix $d=k+1$, but we allow the code length $n$ to be any integer satisfying $n\ge k+2$. The field size of our code is linear in $n$, and the subpacketization of our code is $2^{n/3}$. This value is slightly larger than the subpacketization of the construction by Wang et al. because their code construction only guarantees optimal repair for all the systematic nodes while our code construction guarantees optimal repair for all nodes.
[{'version': 'v1', 'created': 'Mon, 8 Aug 2022 13:59:11 GMT'} {'version': 'v2', 'created': 'Thu, 11 May 2023 14:58:30 GMT'}]
2023-05-23
[array(['Wang', 'Ningning', ''], dtype=object) array(['Li', 'Guodong', ''], dtype=object) array(['Hu', 'Sihuang', ''], dtype=object) array(['Ye', 'Min', ''], dtype=object)]
2,357
1104.2744
Benno van den Berg
Benno van den Berg
Non-deterministic inductive definitions
null
null
null
null
math.LO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study a new proof principle in the context of constructive Zermelo-Fraenkel set theory based on what we will call "non-deterministic inductive definitions". We give applications to formal topology as well as a predicative justification of this principle.
[{'version': 'v1', 'created': 'Thu, 14 Apr 2011 12:47:18 GMT'} {'version': 'v2', 'created': 'Fri, 14 Sep 2012 13:27:36 GMT'}]
2012-09-17
[array(['Berg', 'Benno van den', ''], dtype=object)]
2,358
quant-ph/0004060
Stefan Weigert
Jean-Pierre Amiet, Stefan Weigert
Contracting the Wigner-Kernel of a Spin to the Wigner-Kernel of a Particle
9 pages, Latex2e, no figures
Phys. Rev. A 63 (2001) 012102
10.1103/PhysRevA.63.012102
null
quant-ph
null
A general relation between the Moyal formalisms for a spin and a particle is established. Once the formalism has been set up for a spin, the phase-space description of a particle is obtained from the `contraction' of the group of rotations to the group of translations. This is shown by explicitly contracting a spin Wigner-kernel to the Wigner kernel of a particle. In fact, only one out of 2^{2s} different possible kernels for a spin shows this behaviour.
[{'version': 'v1', 'created': 'Thu, 13 Apr 2000 19:27:08 GMT'}]
2009-11-06
[array(['Amiet', 'Jean-Pierre', ''], dtype=object) array(['Weigert', 'Stefan', ''], dtype=object)]
2,359
2006.12396
Oleg Raichev E
O. E. Raichev, G. M. Gusev, A. D. Levin, and A. K. Bakarov
Manifestations of classical size effect and electronic viscosity in the magnetoresistance of narrow two-dimensional conductors: Theory and experiment
null
Phys. Rev. B 101, 235314 (2020)
10.1103/PhysRevB.101.235314
null
cond-mat.mes-hall
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We develop a classical kinetic theory of magnetotransport of 2D electrons in narrow channels with partly diffusive boundary scattering and apply it to description of magnetoresistance measured in the temperature interval 4.2-30 K in long mesoscopic bars fabricated from high-purity GaAs quantum well structures. Both experiment and theory demonstrate a number of characteristic features in the longitudinal and Hall resistances caused by the size effect in two dimensions owing to the high ballisticity of the transport. In addition to the features described previously, we also reveal a change in the slope of the first derivative of magnetoresistance when the cyclotron orbit diameter equals to half of the channel width. These features are suppressed with increasing temperature as a result of the electronic viscosity due to electron-electron interaction. By comparing theory and experiment, we determine the characteristic time of relaxation of angular distribution of electrons caused by electron-electron scattering.
[{'version': 'v1', 'created': 'Mon, 22 Jun 2020 16:23:02 GMT'}]
2020-06-23
[array(['Raichev', 'O. E.', ''], dtype=object) array(['Gusev', 'G. M.', ''], dtype=object) array(['Levin', 'A. D.', ''], dtype=object) array(['Bakarov', 'A. K.', ''], dtype=object)]
2,360
1011.3085
Razvan Teodorescu
Razvan Teodorescu
Universal limits of nonlinear measure redistribution processes and their applications
To appear in the Journal of Problems of Nonlinear Analysis in Engineering Systems
null
null
null
math.PR math-ph math.MP math.ST stat.TH
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Deriving the time evolution of a distribution of probability (or a probability density matrix) is a problem encountered frequently in a variety of situations: for physical time, it could be a kinetic reaction study, while identifying time with the number of computational steps gives a typical picture of algorithms routinely used in quantum impurity solvers, density functional theory, etc. Using a truncation scheme for the expansion of the exact quantity is necessary due to constraints of the numerical implementation. However, this leads in turn to serious complications such as the Fermion Sign Problem (essentially, density or weights will become negative). By integrating angular degrees of freedom and reducing the dynamics to the radial component, the time evolution is reformulated as a nonlinear integral transform of the distribution function. A canonical decomposition into orthogonal polynomials leads back to the original sign problem, but using a characteristic-function representation allows to extract the asymptotic behavior, and gives an exact large-time limit, for many initial conditions, with guaranteed positivity.
[{'version': 'v1', 'created': 'Sat, 13 Nov 2010 01:26:56 GMT'}]
2010-11-16
[array(['Teodorescu', 'Razvan', ''], dtype=object)]
2,361
1911.00265
Hiroaki Sasaki
Hiroaki Sasaki, Takashi Takenouchi, Ricardo Monti, Aapo Hyv\"arinen
Robust contrastive learning and nonlinear ICA in the presence of outliers
null
null
null
null
cs.LG stat.ML
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Nonlinear independent component analysis (ICA) is a general framework for unsupervised representation learning, and aimed at recovering the latent variables in data. Recent practical methods perform nonlinear ICA by solving a series of classification problems based on logistic regression. However, it is well-known that logistic regression is vulnerable to outliers, and thus the performance can be strongly weakened by outliers. In this paper, we first theoretically analyze nonlinear ICA models in the presence of outliers. Our analysis implies that estimation in nonlinear ICA can be seriously hampered when outliers exist on the tails of the (noncontaminated) target density, which happens in a typical case of contamination by outliers. We develop two robust nonlinear ICA methods based on the {\gamma}-divergence, which is a robust alternative to the KL-divergence in logistic regression. The proposed methods are shown to have desired robustness properties in the context of nonlinear ICA. We also experimentally demonstrate that the proposed methods are very robust and outperform existing methods in the presence of outliers. Finally, the proposed method is applied to ICA-based causal discovery and shown to find a plausible causal relationship on fMRI data.
[{'version': 'v1', 'created': 'Fri, 1 Nov 2019 08:50:01 GMT'}]
2019-11-04
[array(['Sasaki', 'Hiroaki', ''], dtype=object) array(['Takenouchi', 'Takashi', ''], dtype=object) array(['Monti', 'Ricardo', ''], dtype=object) array(['Hyvärinen', 'Aapo', ''], dtype=object)]
2,362
1802.02902
Christiane Quesne
C. Quesne
Quasi-exactly solvable Schr\"odinger equations, symmetric polynomials, and functional Bethe ansatz method
20 pages, no figure, published version. arXiv admin note: substantial text overlap with arXiv:1704.01406
Acta Polytech. 58(2):118-127, 2018
null
null
math-ph math.MP nlin.SI quant-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
For applications to quasi-exactly solvable Schr\"odinger equations in quantum mechanics, we consider the general conditions that have to be satisfied by the coefficients of a second-order differential equation with at most $k+1$ singular points in order that this equation has particular solutions that are $n$th-degree polynomials. In a first approach, we show that such conditions involve $k-2$ integration constants, which satisfy a system of linear equations whose coefficients can be written in terms of elementary symmetric polynomials in the polynomial solution roots whenver such roots are all real and distinct. In a second approach, we consider the functional Bethe ansatz method in its most general form under the same assumption. Comparing the two approaches, we prove that the above-mentioned $k-2$ integration constants can be expressed as linear combinations of monomial symmetric polynomials in the roots, associated with partitions into no more than two parts. We illustrate these results by considering a quasi-exactly solvable extension of the Mathews-Lakshmanan nonlinear oscillator corresponding to $k=4$.
[{'version': 'v1', 'created': 'Wed, 7 Feb 2018 14:45:27 GMT'} {'version': 'v2', 'created': 'Wed, 9 May 2018 13:43:09 GMT'}]
2018-05-11
[array(['Quesne', 'C.', ''], dtype=object)]
2,363
2209.11734
Eric Hanson
Emily Barnard and Eric J. Hanson
Exceptional sequences in semidistributive lattices and the poset topology of wide subcategories
37 pages, 7 figures
null
null
null
math.RT math.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Let $\Lambda$ be a finite-dimensional algebra over a field $K$. We describe how Buan and Marsh's $\tau$-exceptional sequences can be used to give a "brick labeling" of a certain poset of wide subcategories of finitely-generated $\Lambda$-modules. When $\Lambda$ is representation-directed, we prove that there exists a total order on the set of bricks which makes this into an EL-labeling. Motivated by the connection between classical exceptional sequences and noncrossing partitions, we then turn our attention towards the study of (well-separated) completely semidistributive lattices. Such lattices come equipped with a bijection between their completely join-irreducible and completely meet-irreducible elements, known as rowmotion or simply the "$\kappa$-map". Generalizing known results for finite semidistributive lattices, we show that the $\kappa$-map determines exactly when a set of completely join-irreducible elements forms a "canonical join representation". A consequence is that the corresponding "canonical join complex" is a flag simplicial complex, as has been shown for finite semidistributive lattices and lattices of torsion classes of finite-dimensional algebras. Finally, in the case of lattices of torsion classes of finite-dimensional algebras, we demonstrate how Jasso's $\tau$-tilting reduction can be encoded using the $\kappa$-map. We use this to define $\kappa^d$-exceptional sequences for finite semidistributive lattices. These are distinguished sequences of completely join-irreducible elements which we prove specialize to $\tau$-exceptional sequences in the algebra setting.
[{'version': 'v1', 'created': 'Fri, 23 Sep 2022 17:30:13 GMT'}]
2022-09-26
[array(['Barnard', 'Emily', ''], dtype=object) array(['Hanson', 'Eric J.', ''], dtype=object)]
2,364
1901.10673
Martin Hjelm
Martin Hjelm, Carl Henrik Ek, Renaud Detry, Danica Kragic
Invariant Feature Mappings for Generalizing Affordance Understanding Using Regularized Metric Learning
null
null
null
null
cs.RO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This paper presents an approach for learning invariant features for object affordance understanding. One of the major problems for a robotic agent acquiring a deeper understanding of affordances is finding sensory-grounded semantics. Being able to understand what in the representation of an object makes the object afford an action opens up for more efficient manipulation, interchange of objects that visually might not be similar, transfer learning, and robot to human communication. Our approach uses a metric learning algorithm that learns a feature transform that encourages objects that affords the same action to be close in the feature space. We regularize the learning, such that we penalize irrelevant features, allowing the agent to link what in the sensory input caused the object to afford the action. From this, we show how the agent can abstract the affordance and reason about the similarity between different affordances.
[{'version': 'v1', 'created': 'Wed, 30 Jan 2019 04:41:06 GMT'}]
2019-01-31
[array(['Hjelm', 'Martin', ''], dtype=object) array(['Ek', 'Carl Henrik', ''], dtype=object) array(['Detry', 'Renaud', ''], dtype=object) array(['Kragic', 'Danica', ''], dtype=object)]
2,365
0811.2980
Manuel Peimbert
Manuel Peimbert
The Primordial Helium Abundance
27 pages, 8 figures. Appeared in Current Science, vol. 95, pg. 1165-1176, 2008. (http://www.ias.ac.in/currsci/nov102008/1165.pdf)
Curr.Sci.95:1165-1176,2008
null
null
astro-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
I present a brief review on the determination of the primordial helium abundance by unit mass, Yp. I discuss the importance of the primordial helium abundance in: (a) cosmology, (b) testing the standard big bang nucleosynthesis, (c) studying the physical conditions in H II regions, (d) providing the initial conditions for stellar evolution models, and (e) testing the galactic chemical evolution models.
[{'version': 'v1', 'created': 'Tue, 18 Nov 2008 19:57:55 GMT'}]
2008-12-18
[array(['Peimbert', 'Manuel', ''], dtype=object)]
2,366
2302.11369
Misha Padidar
David Bindel, Matt Landreman, Misha Padidar
Direct Optimization of Fast-Ion Confinement in Stellarators
null
null
10.1088/1361-6587/acd141
null
physics.plasm-ph
http://creativecommons.org/licenses/by/4.0/
Confining energetic ions such as alpha particles is a prime concern in the design of stellarators. However, directly measuring alpha confinement through numerical simulation of guiding-center trajectories has been considered to be too computationally expensive and noisy to include in the design loop, and instead has been most often used only as a tool to assess stellarator designs post hoc. In its place, proxy metrics, simplified measures of confinement, have often been used to design configurations because they are computationally more tractable and have been shown to be effective. Despite the success of proxies, it is unclear what is being sacrificed by using them to design the device rather than relying on direct trajectory calculations. In this study, we optimize stellarator designs for improved alpha particle confinement without the use of proxy metrics. In particular, we numerically optimize an objective function that measures alpha particle losses by simulating alpha particle trajectories. While this method is computationally expensive, we find that it can be used successfully to generate configurations with low losses.
[{'version': 'v1', 'created': 'Wed, 22 Feb 2023 13:39:33 GMT'}]
2023-05-24
[array(['Bindel', 'David', ''], dtype=object) array(['Landreman', 'Matt', ''], dtype=object) array(['Padidar', 'Misha', ''], dtype=object)]
2,367
1210.7376
Dmitry Kiryan G.
D.G. Kiryan, G.V. Kiryan
The Chandler wobble and Solar day
6 pages, 2 figures
null
10.48550/arXiv.1210.7376
null
physics.geo-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This work supplements the main results given in our paper "The Chandler wobble is a phantom" (eprint arXiv:1109.4969) and refines the reasons for which researchers previously failed in interpreting the physical meaning of observed zenith distance variations.The main reason for the Chandler wobble problem emergence was that, in analyzing time series with the step multiple of solar day, researchers ignored the nature of the solar day itself. In addition, astrometric instruments used to measure the zenith distance relative the local normal are, by definition, gravity independent, since the local normal is tangential to the gravitation field line at the observation point. Therefore, the measured zenith distances involve all the instantaneous gravitational field distortions. The direct dependence of the zenith distance observations on the gravitational effect of the Moon's perigee mass enables us to conclude that the Chandler wobble is fully independent of the possible motion of the Earth's rotation axis within the Earth.
[{'version': 'v1', 'created': 'Sat, 27 Oct 2012 21:43:15 GMT'} {'version': 'v2', 'created': 'Sun, 4 Nov 2012 14:00:35 GMT'}]
2022-11-01
[array(['Kiryan', 'D. G.', ''], dtype=object) array(['Kiryan', 'G. V.', ''], dtype=object)]
2,368
2012.09692
Marc Franco-Salvador
Sanja \v{S}tajner, Seren Yenikent and Marc Franco-Salvador
Five Psycholinguistic Characteristics for Better Interaction with Users
26 pages, 4 figures
null
null
null
cs.CL
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
When two people pay attention to each other and are interested in what the other has to say or write, they almost instantly adapt their writing/speaking style to match the other. For a successful interaction with a user, chatbots and dialogue systems should be able to do the same. We propose a framework consisting of five psycholinguistic textual characteristics for better human-computer interaction. We describe the annotation processes used for collecting the data, and benchmark five binary classification tasks, experimenting with different training sizes and model architectures. The best architectures noticeably outperform several baselines and achieve macro-averaged F$_1$-scores between 72\% and 96\% depending on the language and the task. The proposed framework proved to be fairly easy to model for various languages even with small amount of manually annotated data if right architectures are used.
[{'version': 'v1', 'created': 'Thu, 17 Dec 2020 16:00:08 GMT'} {'version': 'v2', 'created': 'Fri, 18 Dec 2020 10:43:04 GMT'} {'version': 'v3', 'created': 'Fri, 8 Jan 2021 10:01:49 GMT'} {'version': 'v4', 'created': 'Wed, 13 Jan 2021 10:06:15 GMT'} {'version': 'v5', 'created': 'Mon, 21 Mar 2022 14:04:53 GMT'}]
2022-03-22
[array(['Štajner', 'Sanja', ''], dtype=object) array(['Yenikent', 'Seren', ''], dtype=object) array(['Franco-Salvador', 'Marc', ''], dtype=object)]
2,369
1808.05682
Christopher Homes
Run Yang, Yaomin Dai, Jia Yu, Qiangtao Sui, Zhian Ren, Jungseek Hwang, Hong Xiao, Xianggang Qiu, Christopher C. Homes
Unravelling the mechanism of the semiconducting-like behavior and its relation to superconductivity in (CaFe$_{1-x}$Pt$_{x}$As)$_{10}$Pt$_{3}$As$_{8}$
11 pages, 7 figures; 6 pages of supplemental material
Phys. Rev. B 99, 144520 (2019)
10.1103/PhysRevB.99.144520
null
cond-mat.supr-con cond-mat.str-el
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The temperature-dependence of the in-plane optical properties of (CaFe$_{1-x}$Pt$_{x}$As)$_{10}$Pt$_{3}$As$_{8}$ have been investigated for the undoped ($x=$0) parent compound, and the optimally-doped ($x=$0.1) superconducting material ($T_{c}\simeq$ 12 K) over a wide frequency range. The optical conductivity has been described using two free-carrier (Drude) components, in combination with oscillators to describe interband transitions. At room temperature, the parent compound may be described by a strong, broad Drude term, as well as a narrow, weaker Drude component. Below the structural and magnetic transitions at $\simeq$ 96 and 83 K, respectively, strength is transferred from the free-carrier components into a bound excitation at $\simeq$ 1000 cm$^{-1}$, and the material exhibits semiconducting-like behavior. In the optimally-doped sample, at room temperature the optical properties are again described by narrow and broad Drude responses comparable to the parent compound; however, below $T^\ast \simeq$ 100 K, strength from the narrow Drude is transferred into a newly-emergent low-energy peak at $\simeq$ 120 cm$^{-1}$, which arises from a localization process, resulting in semiconducting-like behavior. Interestingly, below $T_{c}$, this peak also contributes to the superfluid weight, indicating that some localized electrons condense into Cooper pairs; this observation may provide insight into the pairing mechanism in iron-based superconductors.
[{'version': 'v1', 'created': 'Thu, 16 Aug 2018 21:23:08 GMT'} {'version': 'v2', 'created': 'Wed, 1 May 2019 16:12:03 GMT'}]
2019-05-02
[array(['Yang', 'Run', ''], dtype=object) array(['Dai', 'Yaomin', ''], dtype=object) array(['Yu', 'Jia', ''], dtype=object) array(['Sui', 'Qiangtao', ''], dtype=object) array(['Ren', 'Zhian', ''], dtype=object) array(['Hwang', 'Jungseek', ''], dtype=object) array(['Xiao', 'Hong', ''], dtype=object) array(['Qiu', 'Xianggang', ''], dtype=object) array(['Homes', 'Christopher C.', ''], dtype=object)]
2,370
1002.1828
Francesc Rossell\'o
Arnau Mir, Francesc Rossello
The median of the distance between two leaves in a phylogenetic tree
4 pages
null
null
null
cs.DM
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We establish a limit formula for the median of the distance between two leaves in a fully resolved unrooted phylogenetic tree with n leaves. More precisely, we prove that this median is equal, in the limit, to the square root of 4*ln(2)*n.
[{'version': 'v1', 'created': 'Tue, 9 Feb 2010 11:39:48 GMT'}]
2010-02-10
[array(['Mir', 'Arnau', ''], dtype=object) array(['Rossello', 'Francesc', ''], dtype=object)]
2,371
1511.02620
Hellmut Baumg\"artel
Hellmut Baumg\"artel
On the border lines between the regions of distinct solution type for solutions of the Friedmann equation satisfying the Hubble condition
14 pages 3 figures
null
null
null
gr-qc
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
It is well-known that there are four distinct basic types (two Big Bang types, Lemaitre and Big Crunch type) for solutions of the general Friedmann equation with positive cosmological constant, where radiation and matter do not couple (see e.g. [2, p.7]. In that paper the system of case distinction parameters contains a "critical radiation parameter" $\sigma_{cr}$. The present note contains the constructive description of the so-called {\em border lines} between Big Bang/Big Crunch type and Big Bang/Lemaitre type for so-called Hubble solutions of the Friedmann equation by two smooth function branches, expressing the cosmological constant as unique functions of the matter and radiation density (which is considered as a parameter). These functions satisfy simple asymptotic relations w.r.t. the matter density. They are constructed as the solutions of the equation $\sigma=\sigma_{cr}.
[{'version': 'v1', 'created': 'Mon, 9 Nov 2015 10:21:41 GMT'} {'version': 'v2', 'created': 'Wed, 11 Jan 2017 16:25:36 GMT'} {'version': 'v3', 'created': 'Wed, 26 Apr 2017 15:03:49 GMT'}]
2017-04-27
[array(['Baumgärtel', 'Hellmut', ''], dtype=object)]
2,372
1808.01370
Mauro Fontana
Mauro Fontana, Pablo D. Mininni, Pablo Dmitruk
Magnetic structure, dipole reversals, and 1/f noise in resistive MHD spherical dynamos
14 pages, 9 figures
Phys. Rev. Fluids 3, 123702 (2018)
10.1103/PhysRevFluids.3.123702
null
physics.flu-dyn
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
A parametric study of the magnetic dipole behavior in resistive incompressible MHD inside a rotating sphere is performed, using direct numerical simulations and considering Reynolds and Ekman numbers as controlling parameters. The tendency is to obtain geodynamo-like magnetic dipole reversal regimes for sufficiently small Ekman and large Reynolds numbers. The typical dipole latitude obtained in the reversal regime is around 40 degrees (with respect to the rotation axis of the sphere). A statistical analysis of waiting times between dipole reversals is also performed, obtaining a non-Poissonian distribution of waiting times, indicating long-term memory effects. We also report the presence of a $1/f$ frequency power spectrum in the magnetic dipole time-series, which also shows a tendency to grow toward lower frequencies as the Ekman number is decreased.
[{'version': 'v1', 'created': 'Fri, 3 Aug 2018 21:40:11 GMT'} {'version': 'v2', 'created': 'Thu, 31 Jan 2019 14:54:33 GMT'}]
2019-02-01
[array(['Fontana', 'Mauro', ''], dtype=object) array(['Mininni', 'Pablo D.', ''], dtype=object) array(['Dmitruk', 'Pablo', ''], dtype=object)]
2,373
1508.01013
Chiara Gattinoni Dr.
Chiara Gattinoni and Angelos Michaelides
Understanding corrosion inhibition with van der Waals DFT methods: the case of benzotriazole
20 pages, 7 figures
Faraday Discuss. (2015) 180, 439-458
10.1039/C4FD00273C
null
cond-mat.mtrl-sci
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The corrosion of materials is an undesirable and costly process affecting many areas of technology and everyday life. As such, considerable effort has gone into understanding and preventing it. Organic molecule based coatings can in certain circumstances act as effective corrosion inhibitors. Although they have been used to great effect for more than sixty years, how they function at the atomic-level is still a matter of debate. In this work, computer simulation approaches based on density functional theory are used to investigate benzotriazole (BTAH), one of the most widely used and studied corrosion inhibitors for copper. In particular, the structures formed by protonated and deprotonated BTAH molecules on Cu(111) have been determined and linked to their inhibiting properties. It is found that hydrogen bonding, van der Waals interactions and steric repulsions all contribute in shaping how BTAH molecules adsorb, with flat-lying structures preferred at low coverage and upright configurations preferred at high coverage. The interaction of the dehydrogenated benzotriazole molecule (BTA) with the copper surface is instead dominated by strong chemisorption via the azole moiety with the aid of copper adatoms. Structures of dimers or chains are found to be the most stable structures at all coverages, in good agreement with scanning tunnelling microscopy results. Benzotriazole thus shows a complex phase behaviour in which van der Waals forces play an important role and which depends on coverage and on its protonation state and all of these factors feasibly contribute to its effectiveness as a corrosion inhibitor.
[{'version': 'v1', 'created': 'Wed, 5 Aug 2015 09:27:36 GMT'}]
2015-08-06
[array(['Gattinoni', 'Chiara', ''], dtype=object) array(['Michaelides', 'Angelos', ''], dtype=object)]
2,374
hep-ph/9507376
null
Carl H. Albright and Satyanarayan Nandi
Construction of an SO(10) x U(1)_F Model of the Yukawa Interactions
32 pages, latex with style files attached, 1 figure in uuencoded postscript file
Phys.Rev.D53:2699-2711,1996
10.1103/PhysRevD.53.2699
FERMILAB-PUB-95/236-T and OSU preprint 306
hep-ph
null
We construct a supersymmetric $SO(10) \times U(1)_F$ model of the Yukawa interactions at the grand unification scale from knowledge of a phenomenological set of mass matrices obtained by a previous bottom-up approach. The $U(1)_F$ family symmetry determines the textures for the Majorana and generic Dirac mass matrices, while the $SO(10)$ symmetry relates each particular element of the up, down, neutrino and charged lepton Dirac matrices. The dominant second and third family contributions in the Dirac sector are renormalizable, while the remaining contributions to the Dirac mass matrices are of higher order, restricted by the $U(1)_F$ family symmetry to a small set of tree diagrams, and mainly complex-symmetric. The tree diagrams for the Majorana mass matrix are all non-renormalizable and of progressively higher-order, leading to a nearly geometrical structure. Pairs of ${\bf 1, 45, 10}$ and ${\bf 126}$ Higgs representations enter with those having large vacuum expectation values breaking the symmetry down to $SU(3)_c \times SU(2)_L \times U(1)_Y$ near the grand unification scale. In terms of 12 parameters expressed as the Yukawa couplings times vacuum expectation values for the Higgs representations employed, a realistic set of 15 quark and lepton masses (including those for the 3 heavy righthanded Majorana neutrinos) and 8 mixing parameters emerges for the neutrino scenario involving the non-adiabatic conversion of solar neutrinos and the depletion of atmospheric muon-neutrinos through oscillations into tau-neutrinos.
[{'version': 'v1', 'created': 'Fri, 21 Jul 1995 16:55:02 GMT'}]
2014-11-17
[array(['Albright', 'Carl H.', ''], dtype=object) array(['Nandi', 'Satyanarayan', ''], dtype=object)]
2,375
hep-ph/0306026
Anupam Mazumdar
Anupam Mazumdar
A model for fluctuating inflaton coupling: (s)neutrino induced adiabatic perturbations and non-thermal leptogenesis
4 pages, version to be published in PRL
Phys.Rev.Lett. 92 (2004) 241301
10.1103/PhysRevLett.92.241301
null
hep-ph astro-ph
null
We discuss an unique possibility of generating adiabatic density perturbations and leptogenesis from the spatial fluctuations of the inflaton decay rate. The key assumption is that the initial isocurvature perturbations are created in the right handed sneutrino sector during inflation which is then converted into adiabatic perturbations when the inflaton decays. We discuss distinct imprints on the cosmic micro wave background radiation, which can distinguish non-thermal versus thermal leptogenesis.
[{'version': 'v1', 'created': 'Tue, 3 Jun 2003 06:01:33 GMT'} {'version': 'v2', 'created': 'Mon, 9 Jun 2003 15:32:09 GMT'} {'version': 'v3', 'created': 'Fri, 26 Mar 2004 22:14:10 GMT'}]
2009-11-10
[array(['Mazumdar', 'Anupam', ''], dtype=object)]
2,376
0906.2906
Mario Centelles
M. Centelles, S.K. Patra, X. Roca-Maza, B.K. Sharma, P.D. Stevenson, X. Vinas
Influence of the symmetry energy on the giant monopole resonance of neutron-rich nuclei
25 pages, 5 figures; modifications in text
J.Phys.G37:075107,2010
10.1088/0954-3899/37/7/075107
null
nucl-th
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We analyze the influence of the density dependence of the symmetry energy on the average excitation energy of the isoscalar giant monopole resonance (GMR) in stable and exotic neutron-rich nuclei by applying the relativistic extended Thomas-Fermi method in scaling and constrained calculations. For the effective nuclear interaction, we employ the relativistic mean field model supplemented by an isoscalar-isovector meson coupling that allows one to modify the density dependence of the symmetry energy without compromising the success of the model for binding energies and charge radii. The semiclassical estimates of the average energy of the GMR are known to be in good agreement with the results obtained in full RPA calculations. The present analysis is performed along the Pb and Zr isotopic chains. In the scaling calculations, the excitation energy is larger when the symmetry energy is softer. The same happens in the constrained calculations for nuclei with small and moderate neutron excess. However, for nuclei of large isospin the constrained excitation energy becomes smaller in models having a soft symmetry energy. This effect is mainly due to the presence of loosely-bound outer neutrons in these isotopes. A sharp increase of the estimated width of the resonance is found in largely neutron-rich isotopes, even for heavy nuclei, which is enhanced when the symmetry energy of the model is soft. The results indicate that at large neutron numbers the structure of the low-energy region of the GMR strength distribution changes considerably with the density dependence of the nuclear symmetry energy, which may be worthy of further characterization in RPA calculations of the response function.
[{'version': 'v1', 'created': 'Tue, 16 Jun 2009 12:18:08 GMT'} {'version': 'v2', 'created': 'Tue, 6 Apr 2010 19:19:37 GMT'}]
2010-05-21
[array(['Centelles', 'M.', ''], dtype=object) array(['Patra', 'S. K.', ''], dtype=object) array(['Roca-Maza', 'X.', ''], dtype=object) array(['Sharma', 'B. K.', ''], dtype=object) array(['Stevenson', 'P. D.', ''], dtype=object) array(['Vinas', 'X.', ''], dtype=object)]
2,377
math/9910084
Mihran Papikian
Ara Aleksanyan and Mihran Papikian
On Blocking Sets of Affine Spaces
null
null
null
null
math.CO
null
We consider the problem of finding the minimal number of points required to intersect all lines in an affine space over the finite field of order 3. We also consider the problem of finding the minimal number of points required to intersect all two dimensional affine subspaces in an affine space over the field of order 2.
[{'version': 'v1', 'created': 'Mon, 18 Oct 1999 06:54:34 GMT'}]
2007-05-23
[array(['Aleksanyan', 'Ara', ''], dtype=object) array(['Papikian', 'Mihran', ''], dtype=object)]
2,378
0804.2711
Hirofumi Yamada
Hideko Hashiguchi, Keisuke Hoshino, Hirofumi Yamada
Continuum Scaling from Large Mass Expansion on the Lattice: Delta Expansion Applied to the Anharmonic Oscillator
10 pages
Phys.Rev.D77:085003,2008
10.1103/PhysRevD.77.085003
null
hep-lat
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We dilate the scaling region of the lattice anharmonic oscillator at strong coupling by introducing the parameter delta. Performing expansion in delta, the calculation of the mass gap in the continuum limit via the series expansion effective at large lattice spacings is then studied. We show that the dilation on the mass parameter M recovers the scaling behavior of the hopping parameter beta and allows for precise approximation of the mass gap.
[{'version': 'v1', 'created': 'Thu, 17 Apr 2008 02:25:52 GMT'}]
2008-11-26
[array(['Hashiguchi', 'Hideko', ''], dtype=object) array(['Hoshino', 'Keisuke', ''], dtype=object) array(['Yamada', 'Hirofumi', ''], dtype=object)]
2,379
2010.14984
Jialun Ping
Xiaohuang Hu, Yue Tan and Jialun Ping
Investigation of $\Xi_c^0$ in a chiral quark model
9 pages, 5 figures
null
10.1140/epjc/s10052-021-09175-9
null
hep-ph
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Recently, three new states of $\Xi_c^0$ were observed in the invariant mass spectrum of $\Lambda^+_cK^-$ by LHCb collaboration. In this work, we use a chiral quark model to investigate these three exited states with the help of Gaussian expansion method both in three-quark structure and in five-quark structure with all possible quantum numbers $IJ^P=\frac{1}{2}(\frac{1}{2})^-$, $\frac{1}{2}(\frac{3}{2})^-$, $\frac{1}{2}(\frac{5}{2})^-$, $\frac{3}{2}(\frac{1}{2})^-$, $\frac{3}{2}(\frac{3}{2})^-$ and $\frac{3}{2}(\frac{5}{2})^-$ . The calculations shows that the 2$S$ states of $\Xi_c'(2579)^0$ and $\Xi_c(2645)^0$ are comparable to experimental results; In addition, the resonance states of five-quark configuration are possible candidates of these new states with negative parity by using the real scaling method and their decay width are also given.
[{'version': 'v1', 'created': 'Wed, 28 Oct 2020 13:50:04 GMT'} {'version': 'v2', 'created': 'Sun, 7 Feb 2021 11:46:42 GMT'}]
2021-05-12
[array(['Hu', 'Xiaohuang', ''], dtype=object) array(['Tan', 'Yue', ''], dtype=object) array(['Ping', 'Jialun', ''], dtype=object)]
2,380
2201.12702
Shuai Wang
Shuai Wang, Ruihua Han, Yuncong Hong, Qi Hao, Miaowen Wen, Leila Musavian, Shahid Mumtaz, Derrick Wing Kwan Ng
Robotic Wireless Energy Transfer in Dynamic Environments: System Design and Experimental Validation
single column, 18 pages, 6 figures, to appear in IEEE Communications Magazine
IEEE Communications Magazine, Mar. 2022
null
null
cs.RO cs.IT cs.SY eess.SY math.IT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Wireless energy transfer (WET) is a ground-breaking technology for cutting the last wire between mobile sensors and power grids in smart cities. Yet, WET only offers effective transmission of energy over a short distance. Robotic WET is an emerging paradigm that mounts the energy transmitter on a mobile robot and navigates the robot through different regions in a large area to charge remote energy harvesters. However, it is challenging to determine the robotic charging strategy in an unknown and dynamic environment due to the uncertainty of obstacles. This paper proposes a hardware-in-the-loop joint optimization framework that offers three distinctive features: 1) efficient model updates and re-optimization based on the last-round experimental data; 2) iterative refinement of the anchor list for adaptation to different environments; 3) verification of algorithms in a high-fidelity Gazebo simulator and a multi-robot testbed. Experimental results show that the proposed framework significantly saves the WET mission completion time while satisfying collision avoidance and energy harvesting constraints.
[{'version': 'v1', 'created': 'Sun, 30 Jan 2022 01:52:31 GMT'} {'version': 'v2', 'created': 'Thu, 10 Feb 2022 18:21:35 GMT'}]
2022-02-11
[array(['Wang', 'Shuai', ''], dtype=object) array(['Han', 'Ruihua', ''], dtype=object) array(['Hong', 'Yuncong', ''], dtype=object) array(['Hao', 'Qi', ''], dtype=object) array(['Wen', 'Miaowen', ''], dtype=object) array(['Musavian', 'Leila', ''], dtype=object) array(['Mumtaz', 'Shahid', ''], dtype=object) array(['Ng', 'Derrick Wing Kwan', ''], dtype=object)]
2,381
1307.6734
Tiffany Harte
Dimitris Trypogeorgos, Tiffany Harte, Alexis Bonnin and Christopher Foot
Precise shaping of laser light by an acousto-optic deflector
10 pages, 3 figures
Opt. Express 21, 24837-24846 (2013)
10.1364/OE.21.024837
null
physics.optics
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present a laser beam shaping method using acousto-optic deflection of light and discuss its application to dipole trapping of ultracold atoms. By driving the acousto-optic deflector with multiple frequencies, we generate an array of overlapping diffraction-limited beams that combine to form an arbitrary-shaped smooth and continuous trapping potential. Confinement of atoms in a flat-bottomed potential formed by a laser beam with uniform intensity over its central region confers numerous advantages over the harmonic confinement intrinsic to Gaussian beam dipole traps and many other trapping schemes.We demonstrate the versatility of this beam shaping method by generating potentials with large flat-topped regions as well as intensity patterns compensating for residual external potentials to create a uniform background to which the trapping potential of experimental interest can be added.
[{'version': 'v1', 'created': 'Thu, 25 Jul 2013 13:28:27 GMT'} {'version': 'v2', 'created': 'Fri, 13 Sep 2013 15:39:31 GMT'}]
2014-01-03
[array(['Trypogeorgos', 'Dimitris', ''], dtype=object) array(['Harte', 'Tiffany', ''], dtype=object) array(['Bonnin', 'Alexis', ''], dtype=object) array(['Foot', 'Christopher', ''], dtype=object)]
2,382
1805.11762
Bing Liu
Bing Liu, Ian Lane
Adversarial Learning of Task-Oriented Neural Dialog Models
To appear at SIGDIAL 2018
null
null
null
cs.CL
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this work, we propose an adversarial learning method for reward estimation in reinforcement learning (RL) based task-oriented dialog models. Most of the current RL based task-oriented dialog systems require the access to a reward signal from either user feedback or user ratings. Such user ratings, however, may not always be consistent or available in practice. Furthermore, online dialog policy learning with RL typically requires a large number of queries to users, suffering from sample efficiency problem. To address these challenges, we propose an adversarial learning method to learn dialog rewards directly from dialog samples. Such rewards are further used to optimize the dialog policy with policy gradient based RL. In the evaluation in a restaurant search domain, we show that the proposed adversarial dialog learning method achieves advanced dialog success rate comparing to strong baseline methods. We further discuss the covariate shift problem in online adversarial dialog learning and show how we can address that with partial access to user feedback.
[{'version': 'v1', 'created': 'Wed, 30 May 2018 00:48:44 GMT'}]
2018-05-31
[array(['Liu', 'Bing', ''], dtype=object) array(['Lane', 'Ian', ''], dtype=object)]
2,383
1702.04496
Fei Xu
Fei Xu
On homology with coefficients and generalized inductions
null
null
null
null
math.RT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In group representations several inductions given by tensoring with appropriate bimodules may be reconstructed via homology of $G$-posets with $G$-equivariant coefficients. For this purpose, we need various local categories of a finite group $G$, which afford the coefficients. Consequently, the functors among local categories give rise to the homology constructions naturally, and may be used to reformulate some existing results, as well as to deduce new statements.
[{'version': 'v1', 'created': 'Wed, 15 Feb 2017 08:28:13 GMT'} {'version': 'v2', 'created': 'Mon, 22 Oct 2018 03:46:15 GMT'}]
2018-10-23
[array(['Xu', 'Fei', ''], dtype=object)]
2,384
0903.1354
Axel Weiss
G. Siringo, E. Kreysa, A. Kovacs, F. Schuller, A. Weiss, W. Esch, H.P. Gemuend, N. Jethava, G. Lundershausen, A. Colin, R. Guesten, K.M. Menten, A. Beelen, F. Bertoldi, J.W. Beeman, E.E. Haller
The Large APEX Bolometer Camera LABOCA
Accepted for publication in A&A, 18 pages, 18 figures
null
10.1051/0004-6361/200811454
null
astro-ph.IM
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The Large APEX Bolometer Camera, LABOCA, has been commissioned for operation as a new facility instrument t the Atacama Pathfinder Experiment 12m submillimeter telescope. This new 295-bolometer total power camera, operating in the 870 micron atmospheric window, combined with the high efficiency of APEX and the excellent atmospheric transmission at the site, offers unprecedented capability in mapping submillimeter continuum emission for a wide range of astronomical purposes.
[{'version': 'v1', 'created': 'Sat, 7 Mar 2009 17:38:18 GMT'}]
2009-11-13
[array(['Siringo', 'G.', ''], dtype=object) array(['Kreysa', 'E.', ''], dtype=object) array(['Kovacs', 'A.', ''], dtype=object) array(['Schuller', 'F.', ''], dtype=object) array(['Weiss', 'A.', ''], dtype=object) array(['Esch', 'W.', ''], dtype=object) array(['Gemuend', 'H. P.', ''], dtype=object) array(['Jethava', 'N.', ''], dtype=object) array(['Lundershausen', 'G.', ''], dtype=object) array(['Colin', 'A.', ''], dtype=object) array(['Guesten', 'R.', ''], dtype=object) array(['Menten', 'K. M.', ''], dtype=object) array(['Beelen', 'A.', ''], dtype=object) array(['Bertoldi', 'F.', ''], dtype=object) array(['Beeman', 'J. W.', ''], dtype=object) array(['Haller', 'E. E.', ''], dtype=object)]
2,385
0908.1673
Norio Narita
Norio Narita, Bun'ei Sato, Teruyuki Hirano, Motohide Tamura
First Evidence of a Retrograde Orbit of Transiting Exoplanet HAT-P-7b
PASJ Letters, in press [13 pages]
null
10.1093/pasj/61.5.L35
null
astro-ph.EP astro-ph.SR
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We present the first evidence of a retrograde orbit of the transiting exoplanet HAT-P-7b. The discovery is based on a measurement of the Rossiter-McLaughlin effect with the Subaru HDS during a transit of HAT-P-7b, which occurred on UT 2008 May 30. Our best-fit model shows that the spin-orbit alignment angle of this planet is \lambda = -132.6 (+10.5, -16.3) degrees. The existence of such a retrograde planet have been predicted by recent planetary migration models considering planet-planet scattering processes or the Kozai migration. Our finding provides an important milestone that supports such dynamic migration theories.
[{'version': 'v1', 'created': 'Wed, 12 Aug 2009 10:45:15 GMT'} {'version': 'v2', 'created': 'Thu, 27 Aug 2009 16:31:41 GMT'}]
2015-05-13
[array(['Narita', 'Norio', ''], dtype=object) array(['Sato', "Bun'ei", ''], dtype=object) array(['Hirano', 'Teruyuki', ''], dtype=object) array(['Tamura', 'Motohide', ''], dtype=object)]
2,386
2003.11215
Dominik Adolf
Dominik Adolf
Some basic thoughts on the cofiality of Chang structures with an application to forcing
null
null
null
null
math.LO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Consider $(\kappa^{+++},\kappa^{++}) \twoheadrightarrow (\kappa^+,\kappa)$ where $\kappa$ is an uncountable regular cardinal. By a result of Shelah's we have $\operatorname{cof}(X \cap \kappa^{++}) = \kappa$ for almost all $X \subset \kappa^{+++}$ witnessing this. Here we consider the question if there could be a similar result for $X \cap \kappa^+$. We use this discussion to give an interesting example of a pseudo Prikry forcing answering a question of Sinapova.
[{'version': 'v1', 'created': 'Wed, 25 Mar 2020 04:34:30 GMT'}]
2020-03-26
[array(['Adolf', 'Dominik', ''], dtype=object)]
2,387
1008.4429
Elizabeth Mahony
Elizabeth K. Mahony, Elaine M. Sadler, Scott M. Croom, Ronald D. Ekers, Ilana J. Feain and Tara Murphy
Deep 20 GHz observations of X-ray selected QSOs the Compact Array Broadband Backend (CABB)
Accepted for publication in Proceedings of Science [PoS(ISKAF2010)072]. Poster presented at 'A New Golden Age for Radio Astronomy', International SKA Forum 2010, 10-14 June 2010, Hof van Saksen, NL
null
null
null
astro-ph.GA astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
The recently commissioned Compact Array Broadband Backend (CABB) on the Australia Telescope Compact Array (ATCA) provides 2 GHz bandwidth in each frequency and polarisation, significantly increasing the sensitivity of the Array. This increased sensitivity allows for larger samples of sources to be targeted whilst also probing fainter radio luminosities. Using CABB, we have observed a large sample of objects at 20 GHz to investigate the high-frequency radio luminosity distribution of X-ray selected QSOs at redshifts less than 1. Observing at high frequencies allows us to focus on the core emission of the AGN, hence recording the most recent activity.
[{'version': 'v1', 'created': 'Thu, 26 Aug 2010 04:46:05 GMT'}]
2010-08-27
[array(['Mahony', 'Elizabeth K.', ''], dtype=object) array(['Sadler', 'Elaine M.', ''], dtype=object) array(['Croom', 'Scott M.', ''], dtype=object) array(['Ekers', 'Ronald D.', ''], dtype=object) array(['Feain', 'Ilana J.', ''], dtype=object) array(['Murphy', 'Tara', ''], dtype=object)]
2,388
1603.01075
Fernando Dario Mazzone
Sonia Acinas and Fernando Mazzone
Periodic solutions of Euler-Lagrange equations with sublinear pontentials in an Orlicz-Sobolev space setting
null
null
null
null
math.CA
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this paper, we obtain existence results of periodic solutions of hamiltonian systems in the Orlicz-Sobolev space $W^1L^{\Phi}([0,T])$. We employ the direct method of calculus of variations and we consider a potential function $F$ satisfying the inequality $|\nabla F(t,x)|\leq b_1(t) \Phi_0'(|x|)+b_2(t)$, with $b_1, b_2\in L^1$ and certain $N$-functions $\Phi_0$.
[{'version': 'v1', 'created': 'Thu, 3 Mar 2016 12:42:59 GMT'} {'version': 'v2', 'created': 'Tue, 22 Aug 2017 14:39:41 GMT'}]
2017-08-23
[array(['Acinas', 'Sonia', ''], dtype=object) array(['Mazzone', 'Fernando', ''], dtype=object)]
2,389
1404.2980
Jayasimha Atulasimha
Noel D'Souza, Mohammad Salehi Fashami, Supriyo Bandyopadhyay and Jayasimha Atulasimha (corresponding author)
Experimental Clocking of Nanomagnets with Strain for Ultra Low Power Boolean Logic
New version
null
10.1021/acs.nanolett.5b04205
null
cond-mat.mes-hall cond-mat.mtrl-sci
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Nanomagnetic implementations of Boolean logic [1,2] have garnered attention because of their non-volatility and the potential for unprecedented energy-efficiency. Unfortunately, the large dissipative losses that take place when nanomagnets are switched with a magnetic field [3], or spin-transfer-torque [4] inhibit the promised energy-efficiency. Recently, there have been experimental reports of utilizing the Spin Hall effect for switching magnets [5-7], and theoretical proposals for strain induced switching of single-domain magnetostrictive nanomagnets [8-12], that might reduce the dissipative losses significantly. Here, we demonstrate, for the first time, that strain-induced switching of single-domain magnetostrictive nanomagnets of lateral dimensions ~200 nm fabricated on a piezoelectric substrate can implement a nanomagnetic Boolean NOT gate and unidirectional bit information propagation in dipole-coupled nanomagnets chains. This portends ultra-low-energy logic processors and mobile electronics that may be able to operate solely by harvesting energy from the environment without ever requiring a battery.
[{'version': 'v1', 'created': 'Fri, 11 Apr 2014 01:56:16 GMT'} {'version': 'v2', 'created': 'Thu, 21 May 2015 20:19:36 GMT'}]
2016-02-18
[array(["D'Souza", 'Noel', '', 'corresponding author'], dtype=object) array(['Fashami', 'Mohammad Salehi', '', 'corresponding author'], dtype=object) array(['Bandyopadhyay', 'Supriyo', '', 'corresponding author'], dtype=object) array(['Atulasimha', 'Jayasimha', '', 'corresponding author'], dtype=object) ]
2,390
2003.07273
S\"oren Hanke
S\"oren Hanke, Oliver Wallscheid and Joachim B\"ocker
Data Set Description: Identifying the Physics Behind an Electric Motor -- Data-Driven Learning of the Electrical Behavior (Part I)
null
null
null
null
eess.SY cs.LG cs.SY eess.SP math.OC
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Two of the most important aspects of electric vehicles are their efficiency or achievable range. In order to achieve high efficiency and thus a long range, it is essential to avoid over-dimensioning the drive train. Therefore, the drive train has to be kept as lightweight as possible while at the same time being utilized to the best possible extent. This can only be achieved if the dynamic behavior of the drive train is accurately known by the controller. The task of the controller is to achieve a desired torque at the wheels of the car by controlling the currents of the electric motor. With machine learning modeling techniques, accurate models describing the behavior can be extracted from measurement data and then used by the controller. For the comparison of the different modeling approaches, a data set consisting of about 40 million data points was recorded at a test bench for electric drive trains. The data set is published on Kaggle, an online community of data scientists.
[{'version': 'v1', 'created': 'Mon, 16 Mar 2020 15:31:47 GMT'} {'version': 'v2', 'created': 'Tue, 17 Mar 2020 10:09:56 GMT'} {'version': 'v3', 'created': 'Wed, 25 Mar 2020 20:04:58 GMT'}]
2020-03-27
[array(['Hanke', 'Sören', ''], dtype=object) array(['Wallscheid', 'Oliver', ''], dtype=object) array(['Böcker', 'Joachim', ''], dtype=object)]
2,391
0704.1391
David S. Dean
D.S. Dean and R.R. Horgan
Path integrals for stiff polymers applied to membrane physics
11 pages RevTex, 4 figures
Phys. Rev. E 76, 041102 (2007)
10.1103/PhysRevE.76.041102
null
cond-mat.soft
null
Path integrals similar to those describing stiff polymers arise in the Helfrich model for membranes. We show how these types of path integrals can be evaluated and apply our results to study the thermodynamics of a minority stripe phase in a bulk membrane. The fluctuation induced contribution to the line tension between the stripe and the bulk phase is computed, as well as the effective interaction between the two phases in the tensionless case where the two phases have differing bending rigidities.
[{'version': 'v1', 'created': 'Wed, 11 Apr 2007 10:50:22 GMT'}]
2009-01-27
[array(['Dean', 'D. S.', ''], dtype=object) array(['Horgan', 'R. R.', ''], dtype=object)]
2,392
0907.4846
Thomas Timmermann
Thomas Timmermann
The relative tensor product and a minimal fiber product in the setting of $C^{*}$-algebras
36 pages; completely rewritten for publication and to be more easily accessible; the main constructions and results remain unaltered; the numbering has changed; beware that existing references in other articles may refer to the (numbering of the) first version
J. Operator Theory, 68(2):101-140, 2012
null
null
math.OA
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We introduce a relative tensor product of $C^{*}$-modules and a spatial fiber product of $C^{*}$-algebras that are analogues of Connes' fusion of correspondences and the fiber product of von Neumann algebras introduced by Sauvageot, respectively, and study their categorical properties. These constructions form the basis for our approach to quantum groupoids in the setting of $C^{*}$-algebras that is published separately.
[{'version': 'v1', 'created': 'Tue, 28 Jul 2009 06:33:59 GMT'} {'version': 'v2', 'created': 'Thu, 11 Nov 2010 14:53:54 GMT'}]
2013-07-02
[array(['Timmermann', 'Thomas', ''], dtype=object)]
2,393
1102.3188
Fabio Fontanot
Fabio Fontanot (1), Gabriella De Lucia (1), David Wilman (2) and Pierluigi Monaco (3,1) ((1) INAF-Osservatorio Astronomico di Trieste, (2) Max-Planck-Institute fuer Extraterrestrische Physik, Garching bei Muenchen (3) Dipartimento di Fisica, sez. Astronomia, Universita' di Trieste)
The other side of Bulge Formation in a Lambda-CDM cosmology: Bulgeless Galaxies in the Local Universe
Accepted for publication in MNRAS; updated version with additional comparisons with observations
null
10.1111/j.1365-2966.2011.19047.x
null
astro-ph.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study the physical properties, formation histories, and environment of galaxies without a significant "classical" spheroidal component, as predicted by semi-analytical models of galaxy formation and evolution. This work is complementary to the analysis presented in De Lucia et al., (2011), where we focus on the relative contribution of various physical mechanisms responsible for bulge assembly in a Lambda-CDM cosmology. We find that the fraction of bulgeless galaxies is a strong decreasing function of stellar mass: they represent a negligible fraction of the galaxy population with M* > 10^12 Msun, but dominate at M* < 10^10 Msun. We find a clear dichotomy in this galaxy population, between central galaxies of low-mass dark matter haloes, and satellite galaxies in massive groups/clusters. We show that bulgeless galaxies are relatively young systems, that assemble most of their mass at low-redshift, but they can also host very old stellar populations. Since galaxy-galaxy mergers are assumed to lead to the formation of a spheroidal component, in our models these galaxies form preferentially in low-mass haloes that host a small number of satellites galaxies. We show that the adopted modelling for galaxy mergers represents a key ingredient in determining the actual number of bulgeless galaxies. Our results show that these galaxies are not a rare population in theoretical models: at z~0, galaxies with no classical bulge (but often including galaxies with the equivalent of pseudo-bulges) account for up to 14% of the galaxies with 10^11 < M*/Msun < 10^12.
[{'version': 'v1', 'created': 'Tue, 15 Feb 2011 21:01:10 GMT'} {'version': 'v2', 'created': 'Wed, 11 May 2011 09:14:30 GMT'}]
2015-05-27
[array(['Fontanot', 'Fabio', ''], dtype=object) array(['De Lucia', 'Gabriella', ''], dtype=object) array(['Wilman', 'David', ''], dtype=object) array(['Monaco', 'Pierluigi', ''], dtype=object)]
2,394
physics/9812040
Geert Jan van Oldenborgh
Geert Jan van Oldenborgh, Gerrit Burgers and Albert Klein Tank
On the El-Nino Teleconnection to Spring Precipitation in Europe
latex, 14 pages, 9 figures (epsfig)
null
null
KNMI PR 99-03
physics.ao-ph
null
In a statistical analysis of more than a century of data we find a strong connection between strong warm El Nino winter events and high spring precipitation in a band from Southern England eastwards into Asia. This relationship is an extension of the connection mentioned by Kiladis and Diaz (1989), and much stronger than the winter season teleconnection that has been the subject of other studies. Linear correlation coefficients between DJF NINO3 indices and MAM precipitation are higher than r=0.3 for individual stations, and as high as r=0.49 for an index of precipitation anomalies around 50N from 5W to 35E. The lagged correlation suggests that south-east Asian surface temperature anomalies may act as intermediate variables.
[{'version': 'v1', 'created': 'Mon, 21 Dec 1998 22:24:58 GMT'}]
2007-05-23
[array(['van Oldenborgh', 'Geert Jan', ''], dtype=object) array(['Burgers', 'Gerrit', ''], dtype=object) array(['Tank', 'Albert Klein', ''], dtype=object)]
2,395
0809.0417
Nirmal Thyagu N
Satyam Mukherjee, Neelima Gupte
Queue-length synchronization in a communication networks
13 Pages, 15 figures
Phys. Rev. E Vol. 79, 056105 (2009)
10.1103/PhysRevE.79.056105
null
physics.soc-ph cond-mat.stat-mech cs.NI
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
We study synchronization in the context of network traffic on a $2-d$ communication network with local clustering and geographic separations. The network consists of nodes and randomly distributed hubs where the top five hubs ranked according to their coefficient of betweenness centrality (CBC) are connected by random assortative and gradient mechanisms. For multiple message traffic, messages can trap at the high CBC hubs, and congestion can build up on the network with long queues at the congested hubs. The queue lengths are seen to synchronize in the congested phase. Both complete and phase synchronization is seen, between pairs of hubs. In the decongested phase, the pairs start clearing, and synchronization is lost. A cascading master-slave relation is seen between the hubs, with the slower hubs (which are slow to decongest) driving the faster ones. These are usually the hubs of high CBC. Similar results are seen for traffic of constant density. Total synchronization between the hubs of high CBC is also seen in the congested regime. Similar behavior is seen for traffic on a network constructed using the Waxman random topology generator. We also demonstrate the existence of phase synchronization in real Internet traffic data.
[{'version': 'v1', 'created': 'Tue, 2 Sep 2008 12:10:37 GMT'} {'version': 'v2', 'created': 'Sat, 22 Nov 2008 12:41:46 GMT'} {'version': 'v3', 'created': 'Wed, 20 May 2009 10:37:49 GMT'}]
2015-05-13
[array(['Mukherjee', 'Satyam', ''], dtype=object) array(['Gupte', 'Neelima', ''], dtype=object)]
2,396
quant-ph/0702014
Lorenza Viola
Lorenza Viola, Winton G. Brown
Generalized entanglement as a framework for complex quantum systems: Purity vs delocalization measures
17 pages, 3 figures
null
10.1088/1751-8113/40/28/S17
null
quant-ph
null
We establish contact between the delocalization properties of pure quantum states, as quantified by their number of principal components, and the average generalized entanglement properties, as quantified by purity measures relative to different observable sets. We find that correlations between products of state vector components with respect to Hamming distance play an important role in the structure of subsystem-based purity measures. In particular, we derive general conditions under which the amount of global multipartite entanglement relates to the inverse participation ratio averaged over a maximal set of mutually unbiased product bases. Furthermore, we provide a method for computing the expected amount of generalized entanglement with respect to an arbitrary observable set for random pure states. Specific examples and an explicit application to a disordered quantum spin chain are discussed.
[{'version': 'v1', 'created': 'Fri, 2 Feb 2007 01:55:28 GMT'}]
2009-11-13
[array(['Viola', 'Lorenza', ''], dtype=object) array(['Brown', 'Winton G.', ''], dtype=object)]
2,397
2007.02755
Tanilson Santos
Liliana Alc\'on, Mar\'ia P\'ia Mazzoleni, Tanilson Dias dos Santos
On $B_1$-EPG and EPT graphs
This paper has been submitted to the journal DMGT in june 2020
null
null
null
cs.DM math.CO
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
This research contains as a main result the prove that every Chordal $B_1$-EPG graph is simultaneously in the graph classes VPT and EPT. In addition, we describe structures that must be present in any $B_1$-EPG graph which does not admit a Helly-$B_1$-EPG representation. In particular, this paper presents some features of non-trivial families of graphs properly contained in Helly-$B_1$ EPG, namely Bipartite, Block, Cactus and Line of Bipartite graphs.
[{'version': 'v1', 'created': 'Mon, 6 Jul 2020 13:54:51 GMT'}]
2020-07-07
[array(['Alcón', 'Liliana', ''], dtype=object) array(['Mazzoleni', 'María Pía', ''], dtype=object) array(['Santos', 'Tanilson Dias dos', ''], dtype=object)]
2,398
math/0603405
Tomislav Do\v{s}li\'c
Tomislav Do\v{s}li\'c and Darko Veljan
Calculus proofs of some combinatorial inequalities
22 pages, no figures
Mathematical Inequalities & Applications 6 (2003) 197-209
null
null
math.CO
null
Using calculus we show how to prove some combinatorial inequalities of the type log-concavity or log-convexity. It is shown by this method that binomial coefficients and Stirling numbers of the first and second kinds are log-concave, and that Motzkin numbers and secondary structure numbers of rank 1 are log-convex. In fact, we prove via calculus a much stronger result that a natural continuous ``patchwork'' (i.e. corresponding dynamical systems) of Motzkin numbers and secondary structures recursions are increasing functions. We indicate how to prove asymptotically the log-convexity for general secondary structures. Our method also applies to show that sequences of values of some orthogonal polynomials, and in particular the sequence of central Delannoy numbers, are log-convex.
[{'version': 'v1', 'created': 'Thu, 16 Mar 2006 17:06:58 GMT'}]
2007-05-23
[array(['Došlić', 'Tomislav', ''], dtype=object) array(['Veljan', 'Darko', ''], dtype=object)]
2,399
2005.11518
Mikhail Bondarko
Mikhail V. Bondarko, Sergei V. Vostokov
The hearts of weight structures are the weakly idempotent complete categories
13 pages; comments are very welcome!
null
null
null
math.CT math.KT math.RT
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
In this note we prove that additive categories that occur as hearts of weight structures are precisely the weakly idempotent completecategories, that is, the categories where all split monomorphisms give direct sum decompositions. We also give several other conditions equivalent to weak idempotent completeness (some of them are completely new), and discuss weak idempotent completions of additive categories.
[{'version': 'v1', 'created': 'Sat, 23 May 2020 11:43:43 GMT'}]
2020-05-26
[array(['Bondarko', 'Mikhail V.', ''], dtype=object) array(['Vostokov', 'Sergei V.', ''], dtype=object)]