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44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3,900 |
2207.00915
|
Zoe Xi
|
Zoe Xi and William Kuszmaul
|
Approximating Dynamic Time Warping Distance Between Run-Length Encoded
Strings
|
A shorter version of this paper will be published in ESA 2022
| null | null | null |
cs.DS
|
http://creativecommons.org/licenses/by/4.0/
|
Dynamic Time Warping (DTW) is a widely used similarity measure for comparing
strings that encode time series data, with applications to areas including
bioinformatics, signature verification, and speech recognition. The standard
dynamic-programming algorithm for DTW takes $O(n^2)$ time, and there are
conditional lower bounds showing that no algorithm can do substantially better.
In many applications, however, the strings $x$ and $y$ may contain long runs
of repeated letters, meaning that they can be compressed using run-length
encoding. A natural question is whether the DTW-distance between these
compressed strings can be computed efficiently in terms of the lengths $k$ and
$\ell$ of the compressed strings. Recent work has shown how to achieve
$O(k\ell^2 + \ell k^2)$ time, leaving open the question of whether a
near-quadratic $\tilde{O}(k\ell)$-time algorithm might exist.
We show that, if a small approximation loss is permitted, then a
near-quadratic time algorithm is indeed possible: our algorithm computes a $(1
+ \epsilon)$-approximation for $DTW(x, y)$ in $\tilde{O}(k\ell / \epsilon^3)$
time, where $k$ and $\ell$ are the number of runs in $x$ and $y$. Our algorithm
allows for $DTW$ to be computed over any metric space $(\Sigma, \delta)$ in
which distances are $O(log(n))$-bit integers. Surprisingly, the algorithm also
works even if $\delta$ does not induce a metric space on $\Sigma$ (e.g.,
$\delta$ need not satisfy the triangle inequality).
|
[{'version': 'v1', 'created': 'Sat, 2 Jul 2022 22:59:34 GMT'}]
|
2022-07-05
|
[array(['Xi', 'Zoe', ''], dtype=object)
array(['Kuszmaul', 'William', ''], dtype=object)]
|
3,901 |
1010.2249
|
Richard J. Mathar
|
Richard J. Mathar
|
Clebsch--Gordan Coefficients of the Quaternion Group
|
13 pages. 28 tables with characters, Cayley tables and CG
coefficients, 4 figures with Cayley graphs
| null | null | null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Clebsch--Gordan coefficients of the Kronecker products of the irreducible
representations of the Quaternion Group Q8, of the Generalized Quaternion
Groups Q16 and Q32, and of the factor group (Q32 X Q32)/{(1,1),(-1,-1)} are
computed as eigenvectors of a well-known matrix of triple-products of the
irreducible representations.
|
[{'version': 'v1', 'created': 'Mon, 11 Oct 2010 21:43:21 GMT'}]
|
2010-10-13
|
[array(['Mathar', 'Richard J.', ''], dtype=object)]
|
3,902 |
1409.1441
|
Vladimir Markov
|
Vladimir Markov, Slava Mazur, and David Saltz
|
Design and Implementation of Schedule-Based Trading Strategies Based on
Uncertainty Bands
| null |
The Journal of Trading, Fall 2011, Vol. 6, No. 4, pp. 45-52
| null | null |
q-fin.TR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a design for schedule-based execution trading strategies based on
uncertainty bands. This formulation: 1) simplifies strategy specification and
implementation; 2) provides for flexible allocation among passive,
opportunistic, aggressive, and dark pool crossing execution tactics; 3) allows
for rapid enhancements as new optimization methods, scheduling techniques,
alpha models, and execution tactics are developed; and 4) yields information at
macroscopic (strategic) and microscopic (tactical) levels that is easily
published to trading databases and front-end applications.
|
[{'version': 'v1', 'created': 'Thu, 4 Sep 2014 13:44:15 GMT'}]
|
2014-09-05
|
[array(['Markov', 'Vladimir', ''], dtype=object)
array(['Mazur', 'Slava', ''], dtype=object)
array(['Saltz', 'David', ''], dtype=object)]
|
3,903 |
1506.02271
|
Taro Fujisawa
|
Taro Fujisawa
|
Limits of Hodge structures in several variables, II
|
Since Lemma 2.5 in the previous version was false, several
corrections have been made. The main results are the same as in the previous
version. Moreover, the presentation are improved
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of this article is to study degeneration of the variations of Hodge
structure associated to a proper K\"ahler semistable morphism. We prove that
the weight filtrations constructed in the author's previous paper coincide with
the monodromy weight filtrations on the relative log de Rham cohomology groups
of a proper K\"ahler semistable morphism. Moreover, we show that the limiting
mixed Hodge structures form admissible variations of mixed Hodge structure.
|
[{'version': 'v1', 'created': 'Sun, 7 Jun 2015 14:36:34 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Jun 2017 05:45:07 GMT'}]
|
2017-06-13
|
[array(['Fujisawa', 'Taro', ''], dtype=object)]
|
3,904 |
1908.11218
|
Adam Anderson
|
Adam Anderson and Steven R. Young and F. Kyle Reed and Jason M. Vann
|
Deep Modulation (Deepmod): A Self-Taught PHY Layer for Resilient Digital
Communications
|
8 pages
| null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Traditional physical (PHY) layer protocols contain chains of signal
processing blocks that have been mathematically optimized to transmit
information bits efficiently over noisy channels. Unfortunately, this same
optimality encourages ubiquity in wireless communication technology and
enhances the potential for catastrophic cyber or physical attacks due to
prolific knowledge of underlying physical layers. Additionally, optimal signal
processing for one channel medium may not work for another without significant
changes in the software protocol. Any truly resilient communications protocol
must be capable of immediate redeployment to meet quality of service (QoS)
demands in a wide variety of possible channel media. Contrary to many
traditional approaches which use immutable man-made signal processing blocks,
this work proposes generating real-time blocks {\it ad hoc} through a machine
learning framework, so-called deepmod, that is only relevant to the particular
channel medium being used. With this approach, traditional signal processing
blocks are replaced with machine learning graphs which are trained, used, and
discarded as needed. Our experiments show that deepmod, using the same machine
intelligence, converges to viable communication links over vastly different
channels including: radio frequency (RF), powerline communications (PLC), and
acoustic channels.
|
[{'version': 'v1', 'created': 'Thu, 29 Aug 2019 13:38:07 GMT'}]
|
2019-08-30
|
[array(['Anderson', 'Adam', ''], dtype=object)
array(['Young', 'Steven R.', ''], dtype=object)
array(['Reed', 'F. Kyle', ''], dtype=object)
array(['Vann', 'Jason M.', ''], dtype=object)]
|
3,905 |
astro-ph/0109121
|
Daniel Harbeck
|
D. Harbeck, E. K. Grebel, J. Holtzman, P. Guhathakurta, W. Brandner,
D. Geisler, A. Sarajedini, A. Dolphin, D. Hurley-Keller, M. Mateo
|
Population Gradients in Local Group Dwarf Spheroidals
|
accepted for publication in AJ; 25 pages; 11 images in jpeg and png
format
|
Astron.J.122:3092,2001
|
10.1086/324232
| null |
astro-ph
| null |
We present a systematic and homogeneous analysis of population gradients for
the Local Group dwarf spheroidals (dSphs) Carina, Sculptor, Sextans, Tucana,
Andromeda I-III, V, and VI. For all of the Milky Way companions studied here we
find significant population gradients. The same is true for the remote dSph
Tucana located at the outskirts of the LG. Among the M 31 dSph companions only
Andromeda I and VI show obvious gradients. In all cases where a HB morphology
gradient is visible, the red HB stars are more centrally concentrated. The
occurence of a HB morphological gradient shows a correlation with a morphology
gradient in the red giant branch. It seems likely that metallicity is the
driver of the gradients in Sextans, Sculptor, Tucana, and Andromeda VI, while
age is an important factor in Carina. We find no evidence that the vicinity of
a nearby massive spiral galaxy influences the formation of the population
gradients.
|
[{'version': 'v1', 'created': 'Fri, 7 Sep 2001 16:29:46 GMT'}]
|
2011-05-05
|
[array(['Harbeck', 'D.', ''], dtype=object)
array(['Grebel', 'E. K.', ''], dtype=object)
array(['Holtzman', 'J.', ''], dtype=object)
array(['Guhathakurta', 'P.', ''], dtype=object)
array(['Brandner', 'W.', ''], dtype=object)
array(['Geisler', 'D.', ''], dtype=object)
array(['Sarajedini', 'A.', ''], dtype=object)
array(['Dolphin', 'A.', ''], dtype=object)
array(['Hurley-Keller', 'D.', ''], dtype=object)
array(['Mateo', 'M.', ''], dtype=object)]
|
3,906 |
1209.4022
|
Christopher Griffin
|
Ryan Tatko and Christopher Griffin
|
Game Theoretic Formation of a Centrality Based Network
|
Submitted to 2012 ASE Social Informatics Conference
| null | null | null |
cs.GT cs.SI physics.soc-ph
|
http://creativecommons.org/licenses/publicdomain/
|
We model the formation of networks as a game where players aspire to maximize
their own centrality by increasing the number of other players to which they
are path-wise connected, while simultaneously incurring a cost for each added
adjacent edge. We simulate the interactions between players using an algorithm
that factors in rational strategic behavior based on a common objective
function. The resulting networks exhibit pairwise stability, from which we
derive necessary stable conditions for specific graph topologies. We then
expand the model to simulate non-trivial games with large numbers of players.
We show that using conditions necessary for the stability of star topologies we
can induce the formation of hub players that positively impact the total
welfare of the network.
|
[{'version': 'v1', 'created': 'Tue, 18 Sep 2012 16:38:06 GMT'}]
|
2012-09-19
|
[array(['Tatko', 'Ryan', ''], dtype=object)
array(['Griffin', 'Christopher', ''], dtype=object)]
|
3,907 |
1607.07224
|
Sylvain Ribault
|
Marco Picco, Sylvain Ribault and Raoul Santachiara
|
A conformal bootstrap approach to critical percolation in two dimensions
|
16 pages, Python code available at
https://github.com/ribault/bootstrap-2d-Python, v2: some clarifications and
minor improvements
|
SciPost Phys. 1, 009 (2016)
|
10.21468/SciPostPhys.1.1.009
| null |
hep-th cond-mat.stat-mech math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study four-point functions of critical percolation in two dimensions, and
more generally of the Potts model. We propose an exact ansatz for the spectrum:
an infinite, discrete and non-diagonal combination of representations of the
Virasoro algebra. Based on this ansatz, we compute four-point functions using a
numerical conformal bootstrap approach. The results agree with Monte-Carlo
computations of connectivities of random clusters.
|
[{'version': 'v1', 'created': 'Mon, 25 Jul 2016 12:00:02 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Oct 2016 20:57:35 GMT'}]
|
2018-04-20
|
[array(['Picco', 'Marco', ''], dtype=object)
array(['Ribault', 'Sylvain', ''], dtype=object)
array(['Santachiara', 'Raoul', ''], dtype=object)]
|
3,908 |
2002.01662
|
Kyohei Kawaguchi
|
Kyohei Kawaguchi, Masaru Shibata, Masaomi Tanaka
|
Constraint on the ejecta mass for a black hole-neutron star merger event
candidate S190814bv
|
16 pages, 15 figures
|
The Astrophysical Journal, Volume 893, Issue 2, id.153 (2020)
|
10.3847/1538-4357/ab8309
| null |
astro-ph.HE gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive the upper limit to the ejecta mass of S190814bv, a black
hole-neutron star merger candidate, through the radiative transfer simulations
for kilonovae with the realistic ejecta density profile as well as the detailed
opacity and heating rate models. The limits to the ejecta mass strongly depend
on the viewing angle. For the face-on observations ($\le45^\circ$), the total
ejecta mass should be smaller than $0.1\,M_\odot$ for the average distance of
S190814bv ($D=267$ Mpc), while larger mass is allowed for the edge-on
observations. We also derive the conservative upper limits of the dynamical
ejecta mass to be $0.02\,M_\odot$, $0.03\,M_\odot$, and $0.05\,M_\odot$ for the
viewing angle $\le 20^\circ$, $\le 50^\circ$, and for $\le 90^\circ$,
respectively. We show that the {\it iz}-band observation deeper than $22$ mag
within 2 d after the GW trigger is crucial to detect the kilonova with the
total ejecta mass of $0.06\,M_\odot$ at the distance of $D=300$ Mpc. We also
show that a strong constraint on the NS mass-radius relation can be obtained if
the future observations put the upper limit of $0.03\,M_\odot$ to the dynamical
ejecta mass for a BH-NS event with the chirp mass smaller than $\lesssim
3\,M_\odot$ and effective spin larger than $\gtrsim 0.5$.
|
[{'version': 'v1', 'created': 'Wed, 5 Feb 2020 06:55:52 GMT'}
{'version': 'v2', 'created': 'Sat, 6 Jun 2020 05:12:49 GMT'}]
|
2020-06-09
|
[array(['Kawaguchi', 'Kyohei', ''], dtype=object)
array(['Shibata', 'Masaru', ''], dtype=object)
array(['Tanaka', 'Masaomi', ''], dtype=object)]
|
3,909 |
hep-ph/0507006
|
Piotr Niezurawski
|
P. Niezurawski, A. F. Zarnecki, M. Krawczyk
|
Extended analysis of the MSSM Higgs boson production at the Photon
Collider
|
Presented at the International Linear Collider Workshop LCWS05,
Stanford, USA
| null | null | null |
hep-ph
| null |
New analysis of the heavy, neutral MSSM Higgs bosons H and A production at
the Photon Collider is presented for M_A = 200, 250, 300 and 350 GeV in the
parameter range corresponding to the so called "LHC wedge" and beyond. The
expected precision of the cross section measurement for the process
gamma+gamma->A,H->b+bbar and the "discovery reach" of the Photon Collider are
compared for different MSSM scenarios. The analysis takes into account all
relevant theoretical and experimental issues which could affect the
measurement. For MSSM Higgs bosons A and H, for M_A = 200-350 GeV and
tan(beta)=7, the statistical precision of the cross-section determination is
estimated to be 8-34%, after one year of Photon Collider running, for four
considered MSSM parameters sets. As heavy neutral Higgs bosons in this scenario
may not be discovered at LHC or at the first stage of the e+e- collider, an
opportunity of being a discovery machine is also studied for the Photon
Collider.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2005 01:34:11 GMT'}]
|
2007-05-23
|
[array(['Niezurawski', 'P.', ''], dtype=object)
array(['Zarnecki', 'A. F.', ''], dtype=object)
array(['Krawczyk', 'M.', ''], dtype=object)]
|
3,910 |
1807.03360
|
Dmitry Lande
|
D.V. Lande and C.V. Prishchepa
|
The automatic detection of the information operations event basis
|
7 pages, 6 figures
| null | null | null |
cs.CY cs.SI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The methodology of automatic detection of the event basis of information
operations, reflected in thematic information flows, is described. The
presented methodology is based on the technologies for identifying information
operations, the formation of the terminological basis of the subject area, the
application of cluster analysis with cluster centroids, determined by analyzing
the terminology of the information flow. The clusters formed in this way
reflect the main events occurring during the information operations and reveal
the technique for their implementation.
|
[{'version': 'v1', 'created': 'Fri, 22 Jun 2018 16:52:06 GMT'}]
|
2018-07-11
|
[array(['Lande', 'D. V.', ''], dtype=object)
array(['Prishchepa', 'C. V.', ''], dtype=object)]
|
3,911 |
2201.01016
|
Hao Zhu
|
Yunze Xiao, Hao Zhu, Haotian Yang, Zhengyu Diao, Xiangju Lu, Xun Cao
|
Detailed Facial Geometry Recovery from Multi-View Images by Learning an
Implicit Function
|
AAAI 2022 Oral, updated to camera ready version
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recovering detailed facial geometry from a set of calibrated multi-view
images is valuable for its wide range of applications. Traditional multi-view
stereo (MVS) methods adopt an optimization-based scheme to regularize the
matching cost. Recently, learning-based methods integrate all these into an
end-to-end neural network and show superiority of efficiency. In this paper, we
propose a novel architecture to recover extremely detailed 3D faces within
dozens of seconds. Unlike previous learning-based methods that regularize the
cost volume via 3D CNN, we propose to learn an implicit function for regressing
the matching cost. By fitting a 3D morphable model from multi-view images, the
features of multiple images are extracted and aggregated in the mesh-attached
UV space, which makes the implicit function more effective in recovering
detailed facial shape. Our method outperforms SOTA learning-based MVS in
accuracy by a large margin on the FaceScape dataset. The code and data are
released in https://github.com/zhuhao-nju/mvfr.
|
[{'version': 'v1', 'created': 'Tue, 4 Jan 2022 07:24:58 GMT'}
{'version': 'v2', 'created': 'Thu, 5 May 2022 05:34:55 GMT'}]
|
2022-05-06
|
[array(['Xiao', 'Yunze', ''], dtype=object)
array(['Zhu', 'Hao', ''], dtype=object)
array(['Yang', 'Haotian', ''], dtype=object)
array(['Diao', 'Zhengyu', ''], dtype=object)
array(['Lu', 'Xiangju', ''], dtype=object)
array(['Cao', 'Xun', ''], dtype=object)]
|
3,912 |
1101.4751
|
Tan Lei
|
Lei Tan, Yu Qing Zhang, Wu Ming Liu
|
Quantum phase transitions for two coupled sites with dipole-coupled
effective Jaynes-Cummings model
|
7 pages, 11 figures
| null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The nature of the ground states for a system composed of two coupled cavities
with each containing a pair of dipole-coupled two-level atoms are studied over
a wide range of detunings and dipole coupling strengths. The cases for three
limits of exact resonance, large positive and negative detunings are discussed,
and four types of the ground states are revealed. Then the phase diagrams of
the ground state are plotted by choosing three different "order parameters". We
find that the phase space, determined by the combinative action of detuning and
the dipole coupling strength, is divided into four regions. This is different
from the general Bose-Hubbard model and more richer physics are presented in
the two-site coupled cavities system. That is, the insulator region may be
polaritonic or atomic and the superfluid region may be polaritonic or photonic
in nature.
|
[{'version': 'v1', 'created': 'Tue, 25 Jan 2011 09:18:07 GMT'}
{'version': 'v2', 'created': 'Mon, 9 May 2011 07:47:27 GMT'}]
|
2015-03-18
|
[array(['Tan', 'Lei', ''], dtype=object)
array(['Zhang', 'Yu Qing', ''], dtype=object)
array(['Liu', 'Wu Ming', ''], dtype=object)]
|
3,913 |
0805.3656
|
Astrid Wachter
|
A. Wachter, J. M. Winters, K.-P. Schr\"oder, E. Sedlmayr
|
Dust-driven Winds and Mass Loss of C-rich AGB Stars with subsolar
Metallicities
|
8 pages, 4 figures. Accepted for publication in A&A
| null |
10.1051/0004-6361:200809893
| null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the mass loss of highly evolved, low- and intermediate mass
stars and stellar samples with subsolar metallicity. We give a qualitative as
well as quantitative description which can be applied to LMC/SMC-type stellar
populations. For that purpose we apply the same approach as we did for solar
metallicity stars and calculate hydrodynamical wind models including dust
formation with LMC and SMC abundances under consideration of an adapted model
assumption. In particular, we improved the treatment of the radiative transfer
problem in order to accommodate larger non-local contributions occurring with
smaller opacities. For each wind model we determine an averaged mass-loss rate.
The resulting, approximate mass-loss formulae are then applied to well-tested
and calibrated stellar evolution calculations in order to quantify the stellar
mass loss. The dynamical models for LMC and SMC metallicity result in mass-loss
rates of the same order of magnitude as the solar metallicity models which is
in this basic approach in agreement with observations. The hydrodynamical
properties like e.g. the outflow velocity differ (for fixed C/O abundance
ratio) noticeably, though. While critical luminosities of LMC and solar
metallicity models fairly coincide, the SMC models need higher luminosities to
develop dust-driven winds.
|
[{'version': 'v1', 'created': 'Fri, 23 May 2008 15:23:41 GMT'}]
|
2009-11-13
|
[array(['Wachter', 'A.', ''], dtype=object)
array(['Winters', 'J. M.', ''], dtype=object)
array(['Schröder', 'K. -P.', ''], dtype=object)
array(['Sedlmayr', 'E.', ''], dtype=object)]
|
3,914 |
2207.13298
|
Peihao Wang
|
Mukund Varma T, Peihao Wang, Xuxi Chen, Tianlong Chen, Subhashini
Venugopalan, Zhangyang Wang
|
Is Attention All That NeRF Needs?
|
International Conference on Learning Representations (ICLR), 2023
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present Generalizable NeRF Transformer (GNT), a transformer-based
architecture that reconstructs Neural Radiance Fields (NeRFs) and learns to
renders novel views on the fly from source views. While prior works on NeRFs
optimize a scene representation by inverting a handcrafted rendering equation,
GNT achieves neural representation and rendering that generalizes across scenes
using transformers at two stages. (1) The view transformer leverages multi-view
geometry as an inductive bias for attention-based scene representation, and
predicts coordinate-aligned features by aggregating information from epipolar
lines on the neighboring views. (2) The ray transformer renders novel views
using attention to decode the features from the view transformer along the
sampled points during ray marching. Our experiments demonstrate that when
optimized on a single scene, GNT can successfully reconstruct NeRF without an
explicit rendering formula due to the learned ray renderer. When trained on
multiple scenes, GNT consistently achieves state-of-the-art performance when
transferring to unseen scenes and outperform all other methods by ~10% on
average. Our analysis of the learned attention maps to infer depth and
occlusion indicate that attention enables learning a physically-grounded
rendering. Our results show the promise of transformers as a universal modeling
tool for graphics. Please refer to our project page for video results:
https://vita-group.github.io/GNT/.
|
[{'version': 'v1', 'created': 'Wed, 27 Jul 2022 05:09:54 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Oct 2022 01:14:37 GMT'}
{'version': 'v3', 'created': 'Thu, 2 Mar 2023 04:54:00 GMT'}]
|
2023-03-03
|
[array(['T', 'Mukund Varma', ''], dtype=object)
array(['Wang', 'Peihao', ''], dtype=object)
array(['Chen', 'Xuxi', ''], dtype=object)
array(['Chen', 'Tianlong', ''], dtype=object)
array(['Venugopalan', 'Subhashini', ''], dtype=object)
array(['Wang', 'Zhangyang', ''], dtype=object)]
|
3,915 |
1810.11869
|
Martin Mourigal
|
X. Bai, J. A. M. Paddison, E. Kapit, S. M. Koohpayeh, J.-J. Wen, S. E.
Dutton, A. T. Savici, A. I. Kolesnikov, G. E. Granroth, C. L. Broholm, J. T.
Chalker, and M. Mourigal
|
Magnetic excitations of the classical spin liquid MgCr2O4
|
6 pages, 3 figures; supplementary material: 12 pages with figures
|
Phys. Rev. Lett. 122, 097201 (2019)
|
10.1103/PhysRevLett.122.097201
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report a comprehensive inelastic neutron-scattering study of the
frustrated pyrochlore antiferromagnet MgCr2O4 in its cooperative paramagnetic
regime. Theoretical modeling yields a microscopic Heisenberg model with
exchange interactions up to third-nearest neighbors, which quantitatively
explains all the details of the dynamic magnetic response. Our work
demonstrates that the magnetic excitations in paramagnetic MgCr2O4 are
faithfully represented in the entire Brillouin zone by a theory of magnons
propagating in a highly-correlated paramagnetic background. Our results also
suggest that MgCr2O4 is proximate to a spiral spin-liquid phase distinct from
the Coulomb phase, which has implications for the magneto-structural phase
transition in MgCr2O4 .
|
[{'version': 'v1', 'created': 'Sun, 28 Oct 2018 19:42:42 GMT'}]
|
2019-03-11
|
[array(['Bai', 'X.', ''], dtype=object)
array(['Paddison', 'J. A. M.', ''], dtype=object)
array(['Kapit', 'E.', ''], dtype=object)
array(['Koohpayeh', 'S. M.', ''], dtype=object)
array(['Wen', 'J. -J.', ''], dtype=object)
array(['Dutton', 'S. E.', ''], dtype=object)
array(['Savici', 'A. T.', ''], dtype=object)
array(['Kolesnikov', 'A. I.', ''], dtype=object)
array(['Granroth', 'G. E.', ''], dtype=object)
array(['Broholm', 'C. L.', ''], dtype=object)
array(['Chalker', 'J. T.', ''], dtype=object)
array(['Mourigal', 'M.', ''], dtype=object)]
|
3,916 |
1901.01058
|
Moshe Schwartz
|
Han Cai, Johan Chrisnata, Tuvi Etzion, Moshe Schwartz, Antonia
Wachter-Zeh
|
Network-Coding Solutions for Minimal Combination Networks and Their
Sub-networks
| null | null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Minimal multicast networks are fascinating and efficient combinatorial
objects, where the removal of a single link makes it impossible for all
receivers to obtain all messages. We study the structure of such networks, and
prove some constraints on their possible solutions.
We then focus on the combination network, which is one of the simplest and
most insightful network in network-coding theory. Of particular interest are
minimal combination networks. We study the gap in alphabet size between
vector-linear and scalar-linear network-coding solutions for such minimal
combination networks and some of their sub-networks.
For minimal multicast networks with two source messages we find the maximum
possible gap. We define and study sub-networks of the combination network,
which we call Kneser networks, and prove that they attain the upper bound on
the gap with equality. We also prove that the study of this gap may be limited
to the study of sub-networks of minimal combination networks, by using graph
homomorphisms connected with the $q$-analog of Kneser graphs. Additionally, we
prove a gap for minimal multicast networks with three or more source messages
by studying Kneser networks.
Finally, an upper bound on the gap for full minimal combination networks
shows nearly no gap, or none in some cases. This is obtained using an MDS-like
bound for subspaces over a finite field.
|
[{'version': 'v1', 'created': 'Fri, 4 Jan 2019 11:14:48 GMT'}
{'version': 'v2', 'created': 'Fri, 13 Sep 2019 05:30:43 GMT'}]
|
2019-09-16
|
[array(['Cai', 'Han', ''], dtype=object)
array(['Chrisnata', 'Johan', ''], dtype=object)
array(['Etzion', 'Tuvi', ''], dtype=object)
array(['Schwartz', 'Moshe', ''], dtype=object)
array(['Wachter-Zeh', 'Antonia', ''], dtype=object)]
|
3,917 |
1205.4199
|
Eugene Frumker
|
E. Frumker, C. T. Hebeisen, N. Kajumba, J. B. Bertrand, H. J. Worner,
M. Spanner, D. M. Villeneuve, A. Naumov, and P.B. Corkum
|
Oriented rotational wave-packet dynamics studies via high harmonic
generation
| null | null |
10.1103/PhysRevLett.109.113901
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We produce oriented rotational wave packets in CO and measure their
characteristics via high harmonic generation. The wavepacket is created using
an intense, femtosecond laser pulse and its second harmonic. A delayed 800 nm
pulse probes the wave packet, generating even-order high harmonics that arise
from the broken symmetry induced by the orientation dynamics. The even-order
harmonic radiation that we measure appears on a zero background, enabling us to
accurately follow the temporal evolution of the wave packet. Our measurements
reveal that, for the conditions optimum for harmonic generation, the
orientation is produced by preferential ionization which depletes the sample of
molecules of one orientation.
|
[{'version': 'v1', 'created': 'Fri, 18 May 2012 17:02:16 GMT'}]
|
2015-06-05
|
[array(['Frumker', 'E.', ''], dtype=object)
array(['Hebeisen', 'C. T.', ''], dtype=object)
array(['Kajumba', 'N.', ''], dtype=object)
array(['Bertrand', 'J. B.', ''], dtype=object)
array(['Worner', 'H. J.', ''], dtype=object)
array(['Spanner', 'M.', ''], dtype=object)
array(['Villeneuve', 'D. M.', ''], dtype=object)
array(['Naumov', 'A.', ''], dtype=object)
array(['Corkum', 'P. B.', ''], dtype=object)]
|
3,918 |
1702.06718
|
Marcos Tadeu Oliveira Pimenta
|
C. O. Alves, M. T. O. Pimenta
|
On existence and concentration of solutions to a class of quasilinear
problems involving the $1-$Laplace operator
| null | null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we use variational methods to prove results on existence and
concentration of solutions to a problem in $\mathbb{R}^N$ involving the
$1-$Laplacian operator. A thorough analysis on the energy functional defined in
the space of functions of bounded variation $BV(\mathbb{R}^N)$ is necessary,
where the lack of compactness is overcome by using the Concentration of
Compactness Principle of Lions.
|
[{'version': 'v1', 'created': 'Wed, 22 Feb 2017 09:23:46 GMT'}]
|
2017-02-23
|
[array(['Alves', 'C. O.', ''], dtype=object)
array(['Pimenta', 'M. T. O.', ''], dtype=object)]
|
3,919 |
1106.5211
|
Takeshi Araki
|
Takeshi Araki
|
Getting at large theta_13 with almost maximal theta_23 from
tri-bimaximal mixing
|
v1:7 pages, 1 figure; v2:added references and short comments;
v3:typos corrected, final version
|
Phys.Rev.D84:037301,2011
|
10.1103/PhysRevD.84.037301
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a small correction term, \delta M_\nu, in the neutrino sector
and examine whether a large \theta_13 and an almost maximal \theta_23 can
simultaneously be obtained starting from the tri-bimaximal neutrino mixing. It
is found that one can easily gain \theta_13 \simeq 10^\circ, which is favored
by the recent T2K experiment, by taking account of the enhancement due to the
degeneracy among three neutrino masses. We also find that (\delta
M_\nu)_22=(\delta M_\nu)_33 is a key condition for \theta_23 \simeq 45^\circ.
|
[{'version': 'v1', 'created': 'Sun, 26 Jun 2011 11:40:54 GMT'}
{'version': 'v2', 'created': 'Sat, 16 Jul 2011 08:42:01 GMT'}
{'version': 'v3', 'created': 'Tue, 2 Aug 2011 08:19:45 GMT'}]
|
2011-08-12
|
[array(['Araki', 'Takeshi', ''], dtype=object)]
|
3,920 |
2204.13892
|
Ziming Chen
|
Chang Shu, Ziming Chen, Lei Chen, Kuan Ma, Minghui Wang and Haibing
Ren
|
SideRT: A Real-time Pure Transformer Architecture for Single Image Depth
Estimation
|
7 pages, 5 figures
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Since context modeling is critical for estimating depth from a single image,
researchers put tremendous effort into obtaining global context. Many global
manipulations are designed for traditional CNN-based architectures to overcome
the locality of convolutions. Attention mechanisms or transformers originally
designed for capturing long-range dependencies might be a better choice, but
usually complicates architectures and could lead to a decrease in inference
speed. In this work, we propose a pure transformer architecture called SideRT
that can attain excellent predictions in real-time. In order to capture better
global context, Cross-Scale Attention (CSA) and Multi-Scale Refinement (MSR)
modules are designed to work collaboratively to fuse features of different
scales efficiently. CSA modules focus on fusing features of high semantic
similarities, while MSR modules aim to fuse features at corresponding
positions. These two modules contain a few learnable parameters without
convolutions, based on which a lightweight yet effective model is built. This
architecture achieves state-of-the-art performances in real-time (51.3 FPS) and
becomes much faster with a reasonable performance drop on a smaller backbone
Swin-T (83.1 FPS). Furthermore, its performance surpasses the previous
state-of-the-art by a large margin, improving AbsRel metric 6.9% on KITTI and
9.7% on NYU. To the best of our knowledge, this is the first work to show that
transformer-based networks can attain state-of-the-art performance in real-time
in the single image depth estimation field. Code will be made available soon.
|
[{'version': 'v1', 'created': 'Fri, 29 Apr 2022 05:46:20 GMT'}]
|
2022-05-02
|
[array(['Shu', 'Chang', ''], dtype=object)
array(['Chen', 'Ziming', ''], dtype=object)
array(['Chen', 'Lei', ''], dtype=object)
array(['Ma', 'Kuan', ''], dtype=object)
array(['Wang', 'Minghui', ''], dtype=object)
array(['Ren', 'Haibing', ''], dtype=object)]
|
3,921 |
1408.5614
|
Fulvia De Fazio
|
Pietro Biancofiore, Pietro Colangelo, Fulvia De Fazio, Egidio
Scrimieri
|
Exclusive $b \to s \nu \bar \nu$ induced transitions in RS$_c$ model
|
RevTex, 13 pages, 12 figures
| null | null |
BARI-TH/2014-690
|
hep-ph hep-ex hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a set of exclusive $B$ and $B_s$ decay modes induced by the rare $b
\to s \nu \bar \nu$ transition in the RS$_c$ model, an extra-dimensional
extension of the standard model with warped 5D metric and extended gauge group.
We emphasize the role of correlations among the observables, and their
importance for detecting the predicted small deviations from the standard model
expectations.
|
[{'version': 'v1', 'created': 'Sun, 24 Aug 2014 15:53:46 GMT'}]
|
2014-08-26
|
[array(['Biancofiore', 'Pietro', ''], dtype=object)
array(['Colangelo', 'Pietro', ''], dtype=object)
array(['De Fazio', 'Fulvia', ''], dtype=object)
array(['Scrimieri', 'Egidio', ''], dtype=object)]
|
3,922 |
1502.06081
|
Radu Arsinte
|
Radu Arsinte
|
Study of a Robust Algorithm Applied in the Optimal Position Tuning for
the Camera Lens in Automated Visual Inspection Systems
|
5 pages, 2 figures
|
Proceedings of Fifth International Conference on Pattern
Recognition and Information Processing - PRIP'99 - May 18-20, 1999 Minsk,
Belarus - pag.237-242 - ISBN 83-87362-16-6
| null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper present the mathematical fundaments and experimental study of an
algorithm used to find the optimal position for the camera lens to obtain a
maximum of details. This information can be further applied to a appropriate
system to automatically correct this position. The algorithm is based on the
evaluation of a so called resolution function who calculates the maximum of
gradient in a certain zone of the image. The paper also presents alternative
forms of the function, results of measurements and set up a set of practical
rules for the right application of the algorithm.
|
[{'version': 'v1', 'created': 'Sat, 21 Feb 2015 07:40:18 GMT'}]
|
2015-02-24
|
[array(['Arsinte', 'Radu', ''], dtype=object)]
|
3,923 |
cond-mat/0111163
|
Shinobu Ohya
|
Shinobu Ohya, Hiromasa Shimizu, Yutaka Higo, Jiaming Sun, and Masaaki
Tanaka
|
Growth and Properties of Quaternary Alloy Magnetic Semiconductor
(InGaMn)As
|
4 pages, 4 figures
| null | null | null |
cond-mat.mtrl-sci
| null |
We have studied growth and properties of quaternary alloy magnetic
semiconductor (InGaMn)As grown both on GaAs substrates and on InP substrates by
low-temperature molecular-beam epitaxy (LT-MBE). (InGaMn)As thin films were
ferromagnetic below ~30 K, exhibiting strong magneto-optical effect. The
lattice constant of [(InyGa1-y)1-xMnx]As, whose Mn concentration x is below 4%,
is slightly smaller than that of InyGa1-yAs with the same In/Ga content ratio.
We have also obtained very smooth surface morphology of nearly lattice matched
(InGaMn)As thin films grown on InP substrates, which is important for
application to thin-film type magneto-optical devices integrated with III-V
opto-electronics.
|
[{'version': 'v1', 'created': 'Fri, 9 Nov 2001 12:10:26 GMT'}]
|
2007-05-23
|
[array(['Ohya', 'Shinobu', ''], dtype=object)
array(['Shimizu', 'Hiromasa', ''], dtype=object)
array(['Higo', 'Yutaka', ''], dtype=object)
array(['Sun', 'Jiaming', ''], dtype=object)
array(['Tanaka', 'Masaaki', ''], dtype=object)]
|
3,924 |
1404.5911
|
Fernando C. Lombardo
|
C. D. Fosco, F. C. Lombardo, and F. D. Mazzitelli
|
The derivative expansion approach to the interaction between close
surfaces
|
Minor changes, version to appear in Phys. Rev. A
| null |
10.1103/PhysRevA.89.062120
| null |
quant-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The derivative expansion approach to the calculation of the interaction
between two surfaces, is a generalization of the proximity force approximation,
a technique of widespread use in different areas of physics. The derivative
expansion has so far been applied to seemingly unrelated problems in different
areas; it is our principal aim here to present the approach in its full
generality. To that end, we introduce an unified setting, which is independent
of any particular application, provide a formal derivation of the derivative
expansion in that general setting, and study some its properties. With a view
on the possible application of the derivative expansion to other areas, like
nuclear and colloidal physics, we also discuss the relation between the
derivative expansion and some time-honoured uncontrolled approximations used in
those contexts. By putting them under similar terms as the derivative
expansion, we believe that the path is open to the calculation of next to
leading order corrections also for those contexts. We also review some results
obtained within the derivative expansion, by applying it to different concrete
examples and highlighting some important points.
|
[{'version': 'v1', 'created': 'Wed, 23 Apr 2014 17:51:13 GMT'}
{'version': 'v2', 'created': 'Wed, 18 Jun 2014 14:46:31 GMT'}]
|
2015-06-19
|
[array(['Fosco', 'C. D.', ''], dtype=object)
array(['Lombardo', 'F. C.', ''], dtype=object)
array(['Mazzitelli', 'F. D.', ''], dtype=object)]
|
3,925 |
2205.02235
|
Alexis Plascencia
|
Pavel Fileviez Perez, Elliot Golias, Alexis D. Plascencia
|
Two-Higgs-Doublet Model and Quark-Lepton Unification
|
16 pages, 10 figures
|
JHEP 08 (2022) 293
|
10.1007/JHEP08(2022)293
| null |
hep-ph hep-ex
|
http://creativecommons.org/licenses/by/4.0/
|
We study the Two-Higgs-Doublet Model predicted in the minimal theory for
quark-lepton unification that can describe physics at the low scale. We discuss
the relations among the different decay widths of the new Higgs bosons and
study their phenomenology at the Large Hadron Collider. As a result of matter
unification, this theory predicts a correlation between the decay widths of the
heavy Higgs bosons into tau leptons and bottom quarks. We point out how to
probe this theory using these relations and discuss the relevant flavor
constraints.
|
[{'version': 'v1', 'created': 'Wed, 4 May 2022 18:00:00 GMT'}]
|
2022-09-01
|
[array(['Perez', 'Pavel Fileviez', ''], dtype=object)
array(['Golias', 'Elliot', ''], dtype=object)
array(['Plascencia', 'Alexis D.', ''], dtype=object)]
|
3,926 |
physics/0212049
|
Hanns L. Harney
|
A.Y. Abul-Magd, H.L. Harney, M.H. Simbel, and H.A. Weidenmueller
|
Statistical Analysis of Composite Spectra
|
26 pages, 3 figures; v3: changed conclusions, appendix added
|
Annals Phys. 321 (2006) 560-580
|
10.1016/j.aop.2005.04.005
| null |
physics.data-an nucl-th
| null |
We consider nearest neighbor spacing distributions of composite ensembles of
levels. These are obtained by combining independently unfolded sequences of
levels containing only few levels each. Two problems arise in the spectral
analysis of such data. One problem lies in fitting the nearest neighbor spacing
distribution to the histogram of level spacings obtained from the data. We show
that the method of Bayesian inference is superior to this procedure. The second
problem occurs when one unfolds such short sequences. We show that the
unfolding procedure generically leads to an overestimate of the chaoticity
parameter. This trend is absent in the presence of long-range level
correlations. Thus, composite ensembles of levels from a system with long-range
spectral stiffness yield reliable information about the chaotic behavior of the
system.
|
[{'version': 'v1', 'created': 'Thu, 12 Dec 2002 09:08:52 GMT'}
{'version': 'v2', 'created': 'Thu, 12 Feb 2004 08:41:06 GMT'}
{'version': 'v3', 'created': 'Wed, 24 Nov 2004 21:14:32 GMT'}]
|
2009-11-07
|
[array(['Abul-Magd', 'A. Y.', ''], dtype=object)
array(['Harney', 'H. L.', ''], dtype=object)
array(['Simbel', 'M. H.', ''], dtype=object)
array(['Weidenmueller', 'H. A.', ''], dtype=object)]
|
3,927 |
1810.13111
|
Peng Kang
|
Peng Kang, Yixuan Xie, Lei Yang, Chen Zheng, Jinhong Yuan, and Yuejun
Wei
|
Enhanced Quasi-Maximum Likelihood Decoding of Short LDPC Codes based on
Saturation
| null | null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we propose an enhanced quasi-maximum likelihood (EQML) decoder
for LDPC codes with short block lengths. After the failure of the conventional
belief propagation (BP) decoding, the proposed EQML decoder selects unreliable
variable nodes (VNs) and saturates their associated channel output values to
generate a list of decoder input sequences. Each decoder input sequence in the
list is then decoded by the conventional BP decoder to obtain the most likely
codeword. To improve the accuracy of selecting unreliable VNs, we propose an
edge-wise selection method based on the sign fluctuation of VNs' extrinsic
messages. A partial pruning stopping (PPS) rule is also presented to reduce the
decoding latency. Simulation results show that the proposed EQML decoder
outperforms the conventional BP decoder and the augmented BP decoder for short
LDPC codes. It even approaches the performance of ML decoding within 0.3 dB in
terms of frame error rate. In addition, the proposed PPS rule achieves a lower
decoding latency compared to the list decoding stopping rule.
|
[{'version': 'v1', 'created': 'Wed, 31 Oct 2018 05:17:51 GMT'}
{'version': 'v2', 'created': 'Wed, 30 Jan 2019 11:32:02 GMT'}]
|
2019-01-31
|
[array(['Kang', 'Peng', ''], dtype=object)
array(['Xie', 'Yixuan', ''], dtype=object)
array(['Yang', 'Lei', ''], dtype=object)
array(['Zheng', 'Chen', ''], dtype=object)
array(['Yuan', 'Jinhong', ''], dtype=object)
array(['Wei', 'Yuejun', ''], dtype=object)]
|
3,928 |
2203.07027
|
Jianzhang Zheng
|
Jianzhang Zheng, Fan Yang, Hao Shen, Xuan Tang, Mingsong Chen, Liang
Song, Xian Wei
|
Learning from Attacks: Attacking Variational Autoencoder for Improving
Image Classification
| null | null | null | null |
cs.LG cs.CV eess.IV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Adversarial attacks are often considered as threats to the robustness of Deep
Neural Networks (DNNs). Various defending techniques have been developed to
mitigate the potential negative impact of adversarial attacks against task
predictions. This work analyzes adversarial attacks from a different
perspective. Namely, adversarial examples contain implicit information that is
useful to the predictions i.e., image classification, and treat the adversarial
attacks against DNNs for data self-expression as extracted abstract
representations that are capable of facilitating specific learning tasks. We
propose an algorithmic framework that leverages the advantages of the DNNs for
data self-expression and task-specific predictions, to improve image
classification. The framework jointly learns a DNN for attacking Variational
Autoencoder (VAE) networks and a DNN for classification, coined as Attacking
VAE for Improve Classification (AVIC). The experiment results show that AVIC
can achieve higher accuracy on standard datasets compared to the training with
clean examples and the traditional adversarial training.
|
[{'version': 'v1', 'created': 'Fri, 11 Mar 2022 08:48:26 GMT'}]
|
2022-04-12
|
[array(['Zheng', 'Jianzhang', ''], dtype=object)
array(['Yang', 'Fan', ''], dtype=object)
array(['Shen', 'Hao', ''], dtype=object)
array(['Tang', 'Xuan', ''], dtype=object)
array(['Chen', 'Mingsong', ''], dtype=object)
array(['Song', 'Liang', ''], dtype=object)
array(['Wei', 'Xian', ''], dtype=object)]
|
3,929 |
1409.0998
|
Matthias W\"ahlisch
|
Keigo Kawahara, Yutaka Matsubara, Hiroaki Takada
|
A Simulation Environment and preliminary evaluation for Automotive
CAN-Ethernet AVB Networks
|
Published in: A. F\"orster, C. Sommer, T. Steinbach, M. W\"ahlisch
(Eds.), Proc. of 1st OMNeT++ Community Summit, Hamburg, Germany, September 2,
2014, arXiv:1409.0093, 2014
| null | null |
OMNET/2014/02
|
cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ethernet is being considered as the backbone network protocol for
next-generation automotive control networks. In such networks, Controller Area
Network (CAN) messages related to automotive control can be sent from a CAN
network to other sub-networks via the backbone Ethernet bus and, if the CAN
messages have real-time constraints, these have to be guaranteed. This paper
presents a simulation environment for CAN--Ethernet Audio Video Bridging (AVB)
mixed networks based on OMNeT++. We use Ethernet AVB, which can guarantee
network bandwidth, to improve the real-time property of CAN messages through
the backbone Ethernet bus. To simulate the networks, we also developed a
CAN--Ethernet AVB gateway (GW) model. To verify the efficacy of our model, we
measured the latency of CAN messages sent from a CAN bus to an Ethernet AVB
node via the backbone Ethernet AVB bus in both bandwidth-guaranteed and
best-effort queue scenarios. The results indicate that the latency of Ethernet
AVB frames containing CAN messages is minimized and limited by the
bandwidth-guaranteed mechanism of Ethernet AVB.
|
[{'version': 'v1', 'created': 'Wed, 3 Sep 2014 09:01:50 GMT'}]
|
2014-09-04
|
[array(['Kawahara', 'Keigo', ''], dtype=object)
array(['Matsubara', 'Yutaka', ''], dtype=object)
array(['Takada', 'Hiroaki', ''], dtype=object)]
|
3,930 |
1606.08094
|
Michael Margaliot
|
Yoram Zarai and Michael Margaliot and Tamir Tuller
|
Optimal Down Regulation of mRNA Translation
| null | null | null | null |
q-bio.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Down regulation of mRNA translation is an important problem in various
bio-medical domains ranging from developing effective medicines for tumors and
for viral diseases to developing attenuated virus strains that can be used for
vaccination. Here, we study the problem of down regulation of mRNA translation
using a mathematical model called the ribosome flow model (RFM). In the RFM,
the mRNA molecule is modeled as a chain of $n$ sites. The flow of ribosomes
between consecutive sites is regulated by $n+1$ transition rates. Given a set
of feasible transition rates, that models the outcome of all possible
mutations, we consider the problem of maximally down regulating the translation
rate by altering the rates within this set of feasible rates. Under certain
conditions on the feasible set, we show that an optimal solution can be
determined efficiently. We also rigorously analyze two special cases of the
down regulation optimization problem. Our results suggest that one must focus
on the position along the mRNA molecule where the transition rate has the
strongest effect on the protein production rate. However, this rate is not
necessarily the slowest transition rate along the mRNA molecule. We discuss
some of the biological implications of these results.
|
[{'version': 'v1', 'created': 'Sun, 26 Jun 2016 22:23:08 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Jun 2016 06:26:10 GMT'}]
|
2016-06-29
|
[array(['Zarai', 'Yoram', ''], dtype=object)
array(['Margaliot', 'Michael', ''], dtype=object)
array(['Tuller', 'Tamir', ''], dtype=object)]
|
3,931 |
2211.13901
|
Yu Deng
|
Yu Deng, Baoyuan Wang, Heung-Yeung Shum
|
Learning Detailed Radiance Manifolds for High-Fidelity and 3D-Consistent
Portrait Synthesis from Monocular Image
|
CVPR 2023 camera-ready version. Project page:
https://yudeng.github.io/GRAMInverter/
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A key challenge for novel view synthesis of monocular portrait images is 3D
consistency under continuous pose variations. Most existing methods rely on 2D
generative models which often leads to obvious 3D inconsistency artifacts. We
present a 3D-consistent novel view synthesis approach for monocular portrait
images based on a recent proposed 3D-aware GAN, namely Generative Radiance
Manifolds (GRAM), which has shown strong 3D consistency at multiview image
generation of virtual subjects via the radiance manifolds representation.
However, simply learning an encoder to map a real image into the latent space
of GRAM can only reconstruct coarse radiance manifolds without faithful fine
details, while improving the reconstruction fidelity via instance-specific
optimization is time-consuming. We introduce a novel detail manifolds
reconstructor to learn 3D-consistent fine details on the radiance manifolds
from monocular images, and combine them with the coarse radiance manifolds for
high-fidelity reconstruction. The 3D priors derived from the coarse radiance
manifolds are used to regulate the learned details to ensure reasonable
synthesized results at novel views. Trained on in-the-wild 2D images, our
method achieves high-fidelity and 3D-consistent portrait synthesis largely
outperforming the prior art.
|
[{'version': 'v1', 'created': 'Fri, 25 Nov 2022 05:20:04 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Mar 2023 09:07:21 GMT'}]
|
2023-03-21
|
[array(['Deng', 'Yu', ''], dtype=object)
array(['Wang', 'Baoyuan', ''], dtype=object)
array(['Shum', 'Heung-Yeung', ''], dtype=object)]
|
3,932 |
2010.00369
|
Sergei Ivanov Olegovich
|
Sergei O. Ivanov, Fedor Pavutnitskiy, Vladislav Romanovskii, Anatolii
Zaikovskii
|
On homology of Lie algebras over commutative rings
| null |
Journal of Algebra, Volume 586, 2021, Pages 99-139, ISSN 0021-8693
|
10.1016/j.jalgebra.2021.06.019
| null |
math.KT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study five different types of the homology of a Lie algebra over a
commutative ring which are naturally isomorphic over fields. We show that they
are not isomorphic over commutative rings, even over $\mathbb Z,$ and study
connections between them. In particular, we show that they are naturally
isomorphic in the case of a Lie algebra which is flat as a module. As an
auxiliary result we prove that the Koszul complex of a module $M$ over a
principal ideal domain that connects the exterior and the symmetric powers
$0\to \Lambda^n M\to M \otimes \Lambda^{n-1} M \to \dots \to S^{n-1}M \otimes M
\to S^nM\to 0 $ is purely acyclic.
|
[{'version': 'v1', 'created': 'Thu, 1 Oct 2020 13:01:43 GMT'}
{'version': 'v2', 'created': 'Sun, 11 Oct 2020 07:42:05 GMT'}
{'version': 'v3', 'created': 'Thu, 29 Oct 2020 12:33:27 GMT'}
{'version': 'v4', 'created': 'Thu, 17 Dec 2020 12:11:43 GMT'}
{'version': 'v5', 'created': 'Wed, 16 Jun 2021 15:18:52 GMT'}
{'version': 'v6', 'created': 'Tue, 29 Jun 2021 11:08:42 GMT'}]
|
2022-01-19
|
[array(['Ivanov', 'Sergei O.', ''], dtype=object)
array(['Pavutnitskiy', 'Fedor', ''], dtype=object)
array(['Romanovskii', 'Vladislav', ''], dtype=object)
array(['Zaikovskii', 'Anatolii', ''], dtype=object)]
|
3,933 |
astro-ph/0607338
|
Kristen Menou
|
James Y-K. Cho (QM Univ. London), Kristen Menou (Columbia), Brad
Hansen (UCLA), Sara Seager (Carnegie/DTM)
|
Atmospheric Circulation of Close-In Extrasolar Giant Planets: I. Global,
Barotropic, Adiabatic Simulations
|
Accepted for publication in ApJ. Section added on key assumptions.
See previous version for the figures (postscript link)
| null | null | null |
astro-ph
| null |
We present results from a set of over 300 pseudospectral simulations of
atmospheric circulation on extrasolar giant planets with circular orbits. The
simulations are of high enough resolution (up to 341 total and sectoral modes)
to resolve small-scale eddies and waves, required for reasonable physical
accuracy. In this work, we focus on the global circulation pattern that emerges
in a shallow, ``equivalent-barotropic'', turbulent atmosphere on both tidally
synchronized and unsynchronized planets. A full exploration of the large
physical and numerical parameter-space is performed to identify robust features
of the circulation. For some validation, the model is first applied to Solar
System giant planets. For extrasolar giant planets with physical parameters
similar to HD209458b--a presumably synchronized extrasolar giant planet,
representative in many dynamical respects--the circulation is characterized by
the following features: 1) a coherent polar vortex that revolves around the
pole in each hemisphere; 2) a low number--typically two or three--of
slowly-varying, broad zonal (east-west) jets that form when the maximum jet
speed is comparable to, or somewhat stronger than, those observed on the
planets in the Solar System; and, 3) motion-associated temperature field, whose
detectability and variability depend on the strength of the net heating rate
and the global root mean square wind speed in the atmosphere. In many ways, the
global circulation is Earth-like, rather than Jupiter-like. However, if
extrasolar giant planets rotate faster and are not close-in (therefore not
synchronized), their circulations become more Jupiter-like, for Jupiter-like
rotation rates.
|
[{'version': 'v1', 'created': 'Fri, 14 Jul 2006 16:27:37 GMT'}
{'version': 'v2', 'created': 'Sun, 21 Oct 2007 19:13:31 GMT'}]
|
2007-10-22
|
[array(['Cho', 'James Y-K.', '', 'QM Univ. London'], dtype=object)
array(['Menou', 'Kristen', '', 'Columbia'], dtype=object)
array(['Hansen', 'Brad', '', 'UCLA'], dtype=object)
array(['Seager', 'Sara', '', 'Carnegie/DTM'], dtype=object)]
|
3,934 |
1609.03431
|
Mats G Larson
|
Erik Burman, Peter Hansbo, Mats G. Larson, Rolf Stenberg
|
Galerkin least squares finite element method for the obstacle problem
|
18 pages, 5 figures
| null |
10.1016/j.cma.2016.09.025
| null |
math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct a consistent multiplier free method for the finite element
solution of the obstacle problem. The method is based on an augmented
Lagrangian formulation in which we eliminate the multiplier by use of its
definition in a discrete setting. We prove existence and uniqueness of discrete
solutions and optimal order a priori error estimates for smooth exact
solutions. Using a saturation assumption we also prove an a posteriori error
estimate. Numerical examples show the performance of the method and of an
adaptive algorithm for the control of the discretization error.
|
[{'version': 'v1', 'created': 'Mon, 12 Sep 2016 14:58:53 GMT'}]
|
2016-11-23
|
[array(['Burman', 'Erik', ''], dtype=object)
array(['Hansbo', 'Peter', ''], dtype=object)
array(['Larson', 'Mats G.', ''], dtype=object)
array(['Stenberg', 'Rolf', ''], dtype=object)]
|
3,935 |
2010.01914
|
Patrick Krauss
|
Patrick Krauss and Achim Schilling
|
Towards a Cognitive Computational Neuroscience of Auditory Phantom
Perceptions
| null | null | null | null |
q-bio.NC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In order to gain a mechanistic understanding of how tinnitus emerges in the
brain, we must build biologically plausible computational models that mimic
both tinnitus development and perception, and test the tentative models with
brain and behavioral experiments. With a special focus on tinnitus research, we
review recent work at the intersection of artificial intelligence, psychology
and neuroscience, indicating a new research agenda that follows the idea that
experiments will yield theoretical insight only when employed to test
brain-computational models. This view challenges the popular belief, that
tinnitus research is primarily data limited, and that producing large,
multi-modal, and complex datasets, analyzed with advanced data analysis
algorithms, will finally lead to fundamental insights into how tinnitus
emerges. However, there is converging evidence that although modern
technologies allow assessing neural activity in unprecedentedly rich ways in
both, animals and humans, empirical testing one verbally defined hypothesis
about tinnitus after another, will never lead to a mechanistic understanding.
Instead, hypothesis testing needs to be complemented with the construction of
computational models that generate verifiable predictions. We argue, that even
though, contemporary artificial intelligence and machine learning approaches
largely lack biological plausibility, the models to be constructed will have to
draw on concepts from these fields, since they have already proven to do well
in modeling brain function. Nevertheless, biological fidelity will have to be
increased successively, leading to ever better and fine-grained models,
allowing at the end for even testing possible treatment strategies in silico,
before application in animal or patient studies.
|
[{'version': 'v1', 'created': 'Mon, 5 Oct 2020 10:55:03 GMT'}]
|
2020-10-06
|
[array(['Krauss', 'Patrick', ''], dtype=object)
array(['Schilling', 'Achim', ''], dtype=object)]
|
3,936 |
1910.08473
|
Sisi Zhou
|
Sisi Zhou, Liang Jiang
|
An exact correspondence between the quantum Fisher information and the
Bures metric
|
5 pages
| null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The quantum information and the Bures metric are equivalent to each other,
except at points where the rank of the density matrix changes. Here we show
that by slightly modifying the definition of the Bures metric, the quantum
information will be fully equivalent to the Bures metric without exception.
|
[{'version': 'v1', 'created': 'Fri, 18 Oct 2019 15:32:11 GMT'}]
|
2019-10-21
|
[array(['Zhou', 'Sisi', ''], dtype=object)
array(['Jiang', 'Liang', ''], dtype=object)]
|
3,937 |
2102.01673
|
Benjamin Linowitz
|
Sara Lapan, Benjamin Linowitz, Jeffrey S. Meyer
|
Universal systole bounds for arithmetic locally symmetric spaces
| null | null | null | null |
math.DG math.GT math.NT
|
http://creativecommons.org/licenses/by/4.0/
|
The systole of a closed Riemannian manifold is the minimal length of a
non-contractible closed loop. We give a uniform lower bound for the systole for
large classes of simple arithmetic locally symmetric orbifolds. We establish
new bounds for the translation length of a semisimple element x in SL_n(R) in
terms of its associated Mahler measure. We use these geometric methods to prove
the existence of extensions of number fields in which fixed sets of primes have
certain prescribed splitting behavior.
|
[{'version': 'v1', 'created': 'Tue, 2 Feb 2021 18:43:59 GMT'}]
|
2021-02-03
|
[array(['Lapan', 'Sara', ''], dtype=object)
array(['Linowitz', 'Benjamin', ''], dtype=object)
array(['Meyer', 'Jeffrey S.', ''], dtype=object)]
|
3,938 |
1511.07731
|
Cemsinan Deliduman
|
Cemsinan Deliduman, Oguzhan Kasikci, and Baris Yapiskan
|
Flat Galactic Rotation Curves from Geometry in Weyl Gravity
|
8 pages, latex; v2: typos corrected, v3: discussion shortened, v4:
new section added, v5: discussion extended, v6: published version
|
Astrophys.Space Sci. 365 (2020) 3, 51
|
10.1007/s10509-020-03764-y
| null |
gr-qc astro-ph.GA hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We searched for a resolution of the flat galactic rotation curve problem from
geometry instead of assuming the existence of dark matter. We observed that the
scale independence of the rotational velocity in the outer region of galaxies
could point out to a possible existence of local scale symmetry and therefore
the gravitational phenomena inside such regions should be described by the
unique local scale symmetric theory, namely Weyl's theory of gravity. We solved
field equations of Weyl gravity and determined the special geometry in the
outer region of galaxies. In order to understand the effective description of
gravitational phenomena, we compared individual terms of so called
Einstein-Weyl theory and concluded that while the outer region of galaxies are
described by the Weyl term, the inner region of galaxies are described by the
Einstein-Hilbert term.
|
[{'version': 'v1', 'created': 'Tue, 24 Nov 2015 14:36:47 GMT'}
{'version': 'v2', 'created': 'Sun, 6 Dec 2015 10:55:22 GMT'}
{'version': 'v3', 'created': 'Wed, 30 Aug 2017 18:52:37 GMT'}
{'version': 'v4', 'created': 'Sun, 30 Sep 2018 14:38:35 GMT'}
{'version': 'v5', 'created': 'Thu, 17 Oct 2019 15:20:22 GMT'}
{'version': 'v6', 'created': 'Sun, 5 Apr 2020 12:05:59 GMT'}]
|
2020-04-15
|
[array(['Deliduman', 'Cemsinan', ''], dtype=object)
array(['Kasikci', 'Oguzhan', ''], dtype=object)
array(['Yapiskan', 'Baris', ''], dtype=object)]
|
3,939 |
2212.14356
|
Chiara Toldo
|
Alejandra Castro, Francesca Mariani, Chiara Toldo
|
Near-Extremal Limits of de Sitter Black Holes
|
32 pages, 2 figures; v3: typos fixed, clarifications on branches of
2D solutions added, comments on metric backreaction in sec. 4.2 removed.
Section with outlook and conclusions added
| null | null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analyze the thermodynamic response near extremality of charged black holes
in four-dimensional Einstein-Maxwell theory with a positive cosmological
constant. The latter exhibit three different extremal limits, dubbed cold,
Nariai and ultracold configurations, with near-horizon geometries AdS$_2 \times
S^2$, dS$_2 \times S^2$, Mink$_2 \times S^2$, respectively. For each of these
three cases we analyze small deformations away from extremality, and contrast
their response. We also construct the effective two-dimensional theory,
obtained by dimensional reduction, that captures these features and we provide
a more detailed analysis of the perturbations around the near-horizon geometry
for each case. Our results for the ultracold case in particular show an
interesting interplay between the entropy variation and charge variation,
realizing a different symmetry breaking with respect to the other two
near-extremal limits.
|
[{'version': 'v1', 'created': 'Thu, 29 Dec 2022 16:09:16 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Feb 2023 19:01:48 GMT'}
{'version': 'v3', 'created': 'Mon, 29 May 2023 21:52:27 GMT'}]
|
2023-05-31
|
[array(['Castro', 'Alejandra', ''], dtype=object)
array(['Mariani', 'Francesca', ''], dtype=object)
array(['Toldo', 'Chiara', ''], dtype=object)]
|
3,940 |
1911.03764
|
Ruoxuan Xiong
|
Ruoxuan Xiong, Susan Athey, Mohsen Bayati, Guido Imbens
|
Optimal Experimental Design for Staggered Rollouts
| null | null | null | null |
econ.EM stat.ME stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study the design and analysis of experiments conducted on a
set of units over multiple time periods where the starting time of the
treatment may vary by unit. The design problem involves selecting an initial
treatment time for each unit in order to most precisely estimate both the
instantaneous and cumulative effects of the treatment. We first consider
non-adaptive experiments, where all treatment assignment decisions are made
prior to the start of the experiment. For this case, we show that the
optimization problem is generally NP-hard, and we propose a near-optimal
solution. Under this solution, the fraction entering treatment each period is
initially low, then high, and finally low again. Next, we study an adaptive
experimental design problem, where both the decision to continue the experiment
and treatment assignment decisions are updated after each period's data is
collected. For the adaptive case, we propose a new algorithm, the
Precision-Guided Adaptive Experiment (PGAE) algorithm, that addresses the
challenges at both the design stage and at the stage of estimating treatment
effects, ensuring valid post-experiment inference accounting for the adaptive
nature of the design. Using realistic settings, we demonstrate that our
proposed solutions can reduce the opportunity cost of the experiments by over
50%, compared to static design benchmarks.
|
[{'version': 'v1', 'created': 'Sat, 9 Nov 2019 19:46:29 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Aug 2020 02:19:05 GMT'}
{'version': 'v3', 'created': 'Mon, 10 Jan 2022 06:32:31 GMT'}
{'version': 'v4', 'created': 'Sun, 1 Jan 2023 06:36:51 GMT'}
{'version': 'v5', 'created': 'Thu, 30 Mar 2023 17:17:42 GMT'}]
|
2023-03-31
|
[array(['Xiong', 'Ruoxuan', ''], dtype=object)
array(['Athey', 'Susan', ''], dtype=object)
array(['Bayati', 'Mohsen', ''], dtype=object)
array(['Imbens', 'Guido', ''], dtype=object)]
|
3,941 |
1709.07766
|
Delfim F. M. Torres
|
Ravi P. Agarwal, Dumitru Baleanu, Juan J. Nieto, Delfim F. M. Torres,
Yong Zhou
|
A survey on fuzzy fractional differential and optimal control nonlocal
evolution equations
|
This is a preprint of a paper whose final and definite form is with
'Journal of Computational and Applied Mathematics', ISSN: 0377-0427.
Submitted 17-July-2017; Revised 18-Sept-2017; Accepted for publication
20-Sept-2017. arXiv admin note: text overlap with arXiv:1504.05153
|
J. Comput. Appl. Math. 339 (2018), 3--29
|
10.1016/j.cam.2017.09.039
| null |
math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We survey some representative results on fuzzy fractional differential
equations, controllability, approximate controllability, optimal control, and
optimal feedback control for several different kinds of fractional evolution
equations. Optimality and relaxation of multiple control problems, described by
nonlinear fractional differential equations with nonlocal control conditions in
Banach spaces, are considered.
|
[{'version': 'v1', 'created': 'Thu, 21 Sep 2017 13:39:32 GMT'}]
|
2018-04-20
|
[array(['Agarwal', 'Ravi P.', ''], dtype=object)
array(['Baleanu', 'Dumitru', ''], dtype=object)
array(['Nieto', 'Juan J.', ''], dtype=object)
array(['Torres', 'Delfim F. M.', ''], dtype=object)
array(['Zhou', 'Yong', ''], dtype=object)]
|
3,942 |
0909.4790
|
David F. Anderson
|
David F. Anderson, Arnab Ganguly, Thomas G. Kurtz
|
Error analysis of tau-leap simulation methods
|
Published in at http://dx.doi.org/10.1214/10-AAP756 the Annals of
Applied Probability (http://www.imstat.org/aap/) by the Institute of
Mathematical Statistics (http://www.imstat.org)
|
Annals of Applied Probability 2011, Vol. 21, No. 6, 2226-2262
|
10.1214/10-AAP756
|
IMS-AAP-AAP756
|
math.PR math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We perform an error analysis for numerical approximation methods of
continuous time Markov chain models commonly found in the chemistry and
biochemistry literature. The motivation for the analysis is to be able to
compare the accuracy of different approximation methods and, specifically,
Euler tau-leaping and midpoint tau-leaping. We perform our analysis under a
scaling in which the size of the time discretization is inversely proportional
to some (bounded) power of the norm of the state of the system. We argue that
this is a more appropriate scaling than that found in previous error analyses
in which the size of the time discretization goes to zero independent of the
rest of the model. Under the present scaling, we show that midpoint tau-leaping
achieves a higher order of accuracy, in both a weak and a strong sense, than
Euler tau-leaping; a result that is in contrast to previous analyses. We
present examples that demonstrate our findings.
|
[{'version': 'v1', 'created': 'Fri, 25 Sep 2009 20:04:34 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Jul 2010 16:14:25 GMT'}
{'version': 'v3', 'created': 'Tue, 14 Feb 2012 14:28:25 GMT'}]
|
2012-02-15
|
[array(['Anderson', 'David F.', ''], dtype=object)
array(['Ganguly', 'Arnab', ''], dtype=object)
array(['Kurtz', 'Thomas G.', ''], dtype=object)]
|
3,943 |
1912.07366
|
Piyush Pandita
|
Piyush Pandita, Nimish Awalgaonkar, Ilias Bilionis and Jitesh Panchal
|
Learning Arbitrary Quantities of Interest from Expensive Black-Box
Functions through Bayesian Sequential Optimal Design
|
58 figures
| null | null | null |
stat.ML cs.LG stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Estimating arbitrary quantities of interest (QoIs) that are non-linear
operators of complex, expensive-to-evaluate, black-box functions is a
challenging problem due to missing domain knowledge and finite budgets.
Bayesian optimal design of experiments (BODE) is a family of methods that
identify an optimal design of experiments (DOE) under different contexts, using
only in a limited number of function evaluations. Under BODE methods,
sequential design of experiments (SDOE) accomplishes this task by selecting an
optimal sequence of experiments while using data-driven probabilistic surrogate
models instead of the expensive black-box function. Probabilistic predictions
from the surrogate model are used to define an information acquisition function
(IAF) which quantifies the marginal value contributed or the expected
information gained by a hypothetical experiment. The next experiment is
selected by maximizing the IAF. A generally applicable IAF is the expected
information gain (EIG) about a QoI as captured by the expectation of the
Kullback-Leibler divergence between the predictive distribution of the QoI
after doing a hypothetical experiment and the current predictive distribution
about the same QoI. We model the underlying information source as a
fully-Bayesian, non-stationary Gaussian process (FBNSGP), and derive an
approximation of the information gain of a hypothetical experiment about an
arbitrary QoI conditional on the hyper-parameters The EIG about the same QoI is
estimated by sample averages to integrate over the posterior of the
hyper-parameters and the potential experimental outcomes. We demonstrate the
performance of our method in four numerical examples and a practical
engineering problem of steel wire manufacturing. The method is compared to two
classic SDOE methods: random sampling and uncertainty sampling.
|
[{'version': 'v1', 'created': 'Mon, 16 Dec 2019 13:55:07 GMT'}]
|
2019-12-17
|
[array(['Pandita', 'Piyush', ''], dtype=object)
array(['Awalgaonkar', 'Nimish', ''], dtype=object)
array(['Bilionis', 'Ilias', ''], dtype=object)
array(['Panchal', 'Jitesh', ''], dtype=object)]
|
3,944 |
0804.0384
|
Jonas Kraus A.
|
Franz M. Weinert (1), Jonas A. Kraus (2), Thomas Franosch (2), Dieter
Braun (1) ((1) Applied Physics and Center for NanoScience (CeNS), Department
of Physics, Ludwig-Maximilians-Universit\"at M\"unchen, Germany, (2) Arnold
Sommerfeld Center for Theoretical Physics (ASC) and Center for NanoScience
(CeNS), Department of Physics, Ludwig-Maximilians-Universit\"at M\"unchen,
Germany)
|
Microscale fluid flow induced by thermoviscous expansion along a
traveling wave
|
5 pages, 3 figures, accepted by Physical Review Letters
| null |
10.1103/PhysRevLett.100.164501
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The thermal expansion of a fluid combined with a temperature-dependent
viscosity introduces nonlinearities in the Navier-Stokes equations unrelated to
the convective momentum current. The couplings generate the possibility for net
fluid flow at the microscale controlled by external heating. This novel
thermo-mechanical effect is investigated for a thin fluid chamber by a
numerical solution of the Navier-Stokes equations and analytically by a
perturbation expansion. A demonstration experiment confirms the basic mechanism
and quantitatively validates our theoretical analysis.
|
[{'version': 'v1', 'created': 'Wed, 2 Apr 2008 16:05:57 GMT'}]
|
2009-11-13
|
[array(['Weinert', 'Franz M.', ''], dtype=object)
array(['Kraus', 'Jonas A.', ''], dtype=object)
array(['Franosch', 'Thomas', ''], dtype=object)
array(['Braun', 'Dieter', ''], dtype=object)]
|
3,945 |
2204.07504
|
Pedro De La Puente Sierra
|
Pedro Alfonso de la Puente, Juan Jos\'e Berdugo Cepeda, Mar\'ia Jos\'e
P\'erez Pacheco
|
Systematic review of development literature from Latin America between
2010- 2021
|
Working paper, in Spanish language
| null | null | null |
cs.DL
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
The purpose of this systematic review is to identify and describe the state
of development literature published in Latin America, in Spanish and English,
since 2010. For this, we carried out a topographic review of 44 articles
available in the most important bibliographic indexes of Latin America,
published in journals of diverse disciplines. Our analysis focused on analyzing
the nature and composition of literature, finding a large proportion of
articles coming from Mexico and Colombia, as well as specialized in the
economic discipline. The most relevant articles reviewed show methodological
and thematic diversity, with special attention to the problem of growth in
Latin American development. An important limitation of this review is the
exclusion of articles published in Portuguese, as well as non-indexed
literature (such as theses and dissertations). This leads to various
recommendations for future reviews of the development literature produced in
Latin America.
|
[{'version': 'v1', 'created': 'Fri, 18 Mar 2022 02:01:56 GMT'}]
|
2022-04-18
|
[array(['de la Puente', 'Pedro Alfonso', ''], dtype=object)
array(['Cepeda', 'Juan José Berdugo', ''], dtype=object)
array(['Pacheco', 'María José Pérez', ''], dtype=object)]
|
3,946 |
2208.08509
|
Wei Zou
|
Goutham Rajendran, Wei Zou
|
Analyzing Robustness of End-to-End Neural Models for Automatic Speech
Recognition
|
5 pages, 14 figures
| null | null | null |
cs.CL cs.LG cs.SD eess.AS
|
http://creativecommons.org/licenses/by/4.0/
|
We investigate robustness properties of pre-trained neural models for
automatic speech recognition. Real life data in machine learning is usually
very noisy and almost never clean, which can be attributed to various factors
depending on the domain, e.g. outliers, random noise and adversarial noise.
Therefore, the models we develop for various tasks should be robust to such
kinds of noisy data, which led to the thriving field of robust machine
learning. We consider this important issue in the setting of automatic speech
recognition. With the increasing popularity of pre-trained models, it's an
important question to analyze and understand the robustness of such models to
noise. In this work, we perform a robustness analysis of the pre-trained neural
models wav2vec2, HuBERT and DistilHuBERT on the LibriSpeech and TIMIT datasets.
We use different kinds of noising mechanisms and measure the model performances
as quantified by the inference time and the standard Word Error Rate metric. We
also do an in-depth layer-wise analysis of the wav2vec2 model when injecting
noise in between layers, enabling us to predict at a high level what each layer
learns. Finally for this model, we visualize the propagation of errors across
the layers and compare how it behaves on clean versus noisy data. Our
experiments conform the predictions of Pasad et al. [2021] and also raise
interesting directions for future work.
|
[{'version': 'v1', 'created': 'Wed, 17 Aug 2022 20:00:54 GMT'}]
|
2022-08-19
|
[array(['Rajendran', 'Goutham', ''], dtype=object)
array(['Zou', 'Wei', ''], dtype=object)]
|
3,947 |
1609.02835
|
Alessandro Biason
|
Chiara Pielli, Alessandro Biason, Andrea Zanella and Michele Zorzi
|
Joint Optimization of Energy Efficiency and Data Compression in
TDMA-Based Medium Access Control for the IoT - Extended Version
|
8 pages, 4 figures, revised and extended version of a paper that was
accepted for presentation at IEEE Int. Workshop on Low-Layer Implementation
and Protocol Design for IoT Applications (IoT-LINK), GLOBECOM 2016
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Energy efficiency is a key requirement for the Internet of Things, as many
sensors are expected to be completely stand-alone and able to run for years
without battery replacement. Data compression aims at saving some energy by
reducing the volume of data sent over the network, but also affects the quality
of the received information. In this work, we formulate an optimization problem
to jointly design the source coding and transmission strategies for
time-varying channels and sources, with the twofold goal of extending the
network lifetime and granting low distortion levels. We propose a scalable
offline optimal policy that allocates both energy and transmission parameters
(i.e., times and powers) in a network with a dynamic Time Division Multiple
Access (TDMA)-based access scheme.
|
[{'version': 'v1', 'created': 'Fri, 9 Sep 2016 15:32:13 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Sep 2016 06:41:59 GMT'}]
|
2016-09-30
|
[array(['Pielli', 'Chiara', ''], dtype=object)
array(['Biason', 'Alessandro', ''], dtype=object)
array(['Zanella', 'Andrea', ''], dtype=object)
array(['Zorzi', 'Michele', ''], dtype=object)]
|
3,948 |
1611.02199
|
Alessio Sancetta
|
Alessio Sancetta
|
Inference for Additive Models in the Presence of Possibly Infinite
Dimensional Nuisance Parameters
| null | null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A framework for estimation and hypothesis testing of functional restrictions
against general alternatives is proposed. The parameter space is a reproducing
kernel Hilbert space (RKHS). The null hypothesis does not necessarily define a
parametric model. The test allows us to deal with infinite dimensional nuisance
parameters. The methodology is based on a moment equation similar in spirit to
the construction of the efficient score in semiparametric statistics. The
feasible version of such moment equation requires to consistently estimate
projections in the space of RKHS and it is shown that this is possible using
the proposed approach. This allows us to derive some tractable asymptotic
theory and critical values by fast simulation. Simulation results show that the
finite sample performance of the test is consistent with the asymptotics and
that ignoring the effect of nuisance parameters highly distorts the size of the
tests.
|
[{'version': 'v1', 'created': 'Mon, 7 Nov 2016 18:14:52 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Jun 2017 09:30:48 GMT'}
{'version': 'v3', 'created': 'Mon, 20 Aug 2018 10:25:21 GMT'}]
|
2018-08-21
|
[array(['Sancetta', 'Alessio', ''], dtype=object)]
|
3,949 |
0908.2338
|
Paul Hopkins
|
Paul Hopkins, Andrew J. Archer, and Robert Evans
|
Solvent mediated interactions between model colloids and interfaces: A
microscopic approach
|
17 Pages, 13 Figures. Accepted for publication in Journal of Chemical
Physics
|
J. Chem. Phys. 131, 124704 (2009)
|
10.1063/1.3212888
| null |
cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We determine the solvent mediated contribution to the effective potentials
for model colloidal or nano- particles dispersed in a binary solvent that
exhibits fluid-fluid phase separation. Using a simple density functional theory
we calculate the density profiles of both solvent species in the presence of
the `colloids', which are treated as external potentials, and determine the
solvent mediated (SM) potentials. Specifically, we calculate SM potentials
between (i) two colloids, (ii) a colloid and a planar fluid-fluid interface,
and (iii) a colloid and a planar wall with an adsorbed wetting film. We
consider three different types of colloidal particles: colloid A which prefers
the bulk solvent phase rich in species 2, colloid C which prefers the solvent
phase rich in species 1, and `neutral' colloid B which has no strong preference
for either phase, i.e. the free energies to insert the colloid into either of
the coexisting bulk phases are almost equal. When a colloid which has a
preference for one of the two solvent phases is inserted into the disfavored
phase at statepoints close to coexistence a thick adsorbed `wetting' film of
the preferred phase may form around the colloids. The presence of the adsorbed
film has a profound influence on the form of the SM potentials.
|
[{'version': 'v1', 'created': 'Mon, 17 Aug 2009 12:02:14 GMT'}]
|
2011-06-24
|
[array(['Hopkins', 'Paul', ''], dtype=object)
array(['Archer', 'Andrew J.', ''], dtype=object)
array(['Evans', 'Robert', ''], dtype=object)]
|
3,950 |
1910.05349
|
Tomohiro Oishi
|
Tomohiro Oishi, Goran Kruzic, and Nils Paar
|
Relativistic energy-density functional approach to magnetic-dipole
excitation and its sum rule
|
6 pages, 2 figures, 1 table, contribution to the conference
proceedings for INPC 2019 in Glasgow, UK (29th July - 2nd August, 2019)
| null | null | null |
nucl-th astro-ph.HE nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Magnetic-dipole (M1) excitations of $^{18}$O and $^{42}$Ca nuclei are
investigated within a relativistic nuclear energy density functional framework.
In our last work \cite{2019OP}, these nuclei are found to have unique M1
excitation and its sum rule, because of their characteristic structure: the
system consists of the shell-closure core plus two neutrons. For a more
systematic investigation of the M1 mode, we have implemented a framework based
on the relativistic nuclear energy density functional (RNEDF). For benchmark,
we have performed the RNEDF calculations combined with the random-phase
approximation (RPA). We evaluate the M1 excitation of $^{18}$O and $^{42}$Ca,
whose sum-rule value (SRV) of the M1 transitions can be useful to test the
computational implementation \cite{2019OP}. We also apply this RNEDF method to
$^{208}$Pb, whose M1 property has been precisely measured
\cite{1979Holt,1987Koehler,1988Laszewski,2016Birkhan}. Up to the level of the
M1 sum rule, our result is in agreement with the experiments, except the
discrepancy related with the quenching factors for $g$ coefficients.
|
[{'version': 'v1', 'created': 'Fri, 11 Oct 2019 18:00:04 GMT'}]
|
2019-10-15
|
[array(['Oishi', 'Tomohiro', ''], dtype=object)
array(['Kruzic', 'Goran', ''], dtype=object)
array(['Paar', 'Nils', ''], dtype=object)]
|
3,951 |
1811.07745
|
Ariel Keselman
|
Ariel Keselman, Sergey Ten, Adham Ghazali, Majed Jubeh
|
Reinforcement Learning with A* and a Deep Heuristic
|
6 pages 2 figures
| null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A* is a popular path-finding algorithm, but it can only be applied to those
domains where a good heuristic function is known. Inspired by recent methods
combining Deep Neural Networks (DNNs) and trees, this study demonstrates how to
train a heuristic represented by a DNN and combine it with A*. This new
algorithm which we call aleph-star can be used efficiently in domains where the
input to the heuristic could be processed by a neural network. We compare
aleph-star to N-Step Deep Q-Learning (DQN Mnih et al. 2013) in a driving
simulation with pixel-based input, and demonstrate significantly better
performance in this scenario.
|
[{'version': 'v1', 'created': 'Mon, 19 Nov 2018 15:15:18 GMT'}]
|
2018-11-20
|
[array(['Keselman', 'Ariel', ''], dtype=object)
array(['Ten', 'Sergey', ''], dtype=object)
array(['Ghazali', 'Adham', ''], dtype=object)
array(['Jubeh', 'Majed', ''], dtype=object)]
|
3,952 |
1705.01821
|
D Thirumulanathan
|
D. Thirumulanathan, Rajesh Sundaresan, and Y Narahari
|
On Optimal Mechanisms in the Two-Item Single-Buyer Unit-Demand Setting
| null |
Journal of Mathematical Economics (JME), vol. 82, pp.31--60, 2019
|
10.1016/j.jmateco.2019.01.005
| null |
cs.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of designing a revenue-optimal mechanism in the
two-item, single-buyer, unit-demand setting when the buyer's valuations, $(z_1,
z_2)$, are uniformly distributed in an arbitrary rectangle
$[c,c+b_1]\times[c,c+b_2]$ in the positive quadrant. We provide a complete and
explicit solution for arbitrary nonnegative values of $(c,b_1,b_2)$. We
identify five simple structures, each with at most five (possibly stochastic)
menu items, and prove that the optimal mechanism has one of the five
structures. We also characterize the optimal mechanism as a function of $b_1,
b_2$, and $c$. When $c$ is low, the optimal mechanism is a posted price
mechanism with an exclusion region; when $c$ is high, it is a posted price
mechanism without an exclusion region. Our results are the first to show the
existence of optimal mechanisms with no exclusion region, to the best of our
knowledge.
|
[{'version': 'v1', 'created': 'Thu, 4 May 2017 12:47:39 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Jun 2017 10:17:20 GMT'}
{'version': 'v3', 'created': 'Wed, 31 Jan 2018 19:59:35 GMT'}
{'version': 'v4', 'created': 'Wed, 26 Sep 2018 07:26:28 GMT'}
{'version': 'v5', 'created': 'Tue, 5 Mar 2019 09:23:56 GMT'}]
|
2019-03-06
|
[array(['Thirumulanathan', 'D.', ''], dtype=object)
array(['Sundaresan', 'Rajesh', ''], dtype=object)
array(['Narahari', 'Y', ''], dtype=object)]
|
3,953 |
1712.00910
|
Yuka Fujiki
|
Yuka Fujiki, Taro Takaguchi, and Kousuke Yakubo
|
A general formulation of long-range degree correlations in complex
networks
|
9 pages, 4 figures
|
Phys. Rev. E 97, 062308 (2018)
|
10.1103/PhysRevE.97.062308
| null |
physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide a general framework for analyzing degree correlations between
nodes separated by more than one step (i.e., beyond nearest neighbors) in
complex networks. One probability and four conditional probabilities are
introduced to fully describe long-range degree correlations with respect to $k$
and $k'$ of two nodes and shortest path length $l$ between them. We present
general relations among these probabilities and clarify the relevance to
nearest-neighbor degree correlations. Unlike nearest-neighbor correlations,
some of these probabilities are meaningful only in finite-size networks.
Furthermore, as a baseline to determine the existence or nonexistence of
long-range degree correlations in a network, the functional forms of these
probabilities for networks without any long-range degree correlations are
analytically evaluated within a mean-field approximation. The validity of our
argument is demonstrated by applying it to real-world networks.
|
[{'version': 'v1', 'created': 'Mon, 4 Dec 2017 05:25:32 GMT'}]
|
2018-06-20
|
[array(['Fujiki', 'Yuka', ''], dtype=object)
array(['Takaguchi', 'Taro', ''], dtype=object)
array(['Yakubo', 'Kousuke', ''], dtype=object)]
|
3,954 |
2306.03149
|
Atrideb Chatterjee
|
Atrideb Chatterjee, Pratika Dayal, Valentin Mauerhofer
|
Predictions of the 21cm global signal in the JWST and ALMA era
| null | null | null | null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We calculate the redshift evolution of the global 21cm signal in the first
billion years using a semi-analytic galaxy formation model, DELPHI, that
jointly tracks the assembly of dark matter halos and their constituent baryons
including the impact of supernova feedback and dust enrichment. Employing only
two redshift- and mass-independent free parameters, our model predicts galaxy
populations in accord with data from both the James Webb Space Telescope (JWST)
and the Atacama Large Millimetre Array (ALMA) at $z \sim 5-12$. In addition to
this ``fiducial" model, which fully incorporates the impact of dust
attenuation, we also explore an unphysical ``maximal" model wherein galaxies
can convert a 100\% of their gas into stars instantaneously (and supernova
feedback is ignored) required to explain JWST data at $z >=13$. We also explore
a wide range of values for our {\it 21cm} parameters that include the impact of
X-ray heating ($f_{\rm X,h} =0.02-2.0$) and the escape fraction of Lyman Alpha
photons ($f_\alpha = 0.01-1.0$). Our key findings are: (i) the fiducial model
predicts a global 21cm signal which reaches a minimum brightness temperature of
$ T_{\rm b, min}\sim -215$ mK at a redshift $z_{\rm min} \sim 14$; (ii) since
the impact of dust on galaxy properties (such as the star formation rate
density) only becomes relevant at $z <= 8$, dust does not have a sensible
impact on the global 21cm signal; (iii) the ``maximal" model predicts $T_{\rm
b, min}= -210$ mK as early as $z_{\rm min} \sim 18$; (iv) galaxy formation and
21cm parameters have a degenerate impact on the global 21cm signal. A
combination of the minimum temperature and its redshift will therefore be
crucial in constraining galaxy formation parameters and their coupling to the
21cm signal at these early epochs.
|
[{'version': 'v1', 'created': 'Mon, 5 Jun 2023 18:04:22 GMT'}]
|
2023-06-07
|
[array(['Chatterjee', 'Atrideb', ''], dtype=object)
array(['Dayal', 'Pratika', ''], dtype=object)
array(['Mauerhofer', 'Valentin', ''], dtype=object)]
|
3,955 |
1910.00335
|
Riccardo Tione
|
Camillo De Lellis, Guido De Philippis, Bernd Kirchheim, Riccardo Tione
|
Geometric measure theory and differential inclusions
| null | null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we consider Lipschitz graphs of functions which are stationary
points of strictly polyconvex energies. Such graphs can be thought as integral
currents, resp. varifolds, which are stationary for some elliptic integrands.
The regularity theory for the latter is a widely open problem, in particular no
counterpart of the classical Allard's theorem is known. We address the issue
from the point of view of differential inclusions and we show that the relevant
ones do not contain the class of laminates which are used in [22] and [25] to
construct nonregular solutions. Our result is thus an indication that an
Allard's type result might be valid for general elliptic integrands. We
conclude the paper by listing a series of open questions concerning the
regularity of stationary points for elliptic integrands.
|
[{'version': 'v1', 'created': 'Tue, 1 Oct 2019 12:20:49 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Oct 2019 19:16:18 GMT'}]
|
2019-10-14
|
[array(['De Lellis', 'Camillo', ''], dtype=object)
array(['De Philippis', 'Guido', ''], dtype=object)
array(['Kirchheim', 'Bernd', ''], dtype=object)
array(['Tione', 'Riccardo', ''], dtype=object)]
|
3,956 |
hep-ph/0107172
|
Beata Ziaja
|
B. Ziaja
|
Low x double $ln^2(1/x)$ resummation effects at the sum rules for
nucleon structure function $g_1$
|
19 pages, latex, 7 figures
|
Acta Phys.Polon.B32:2863,2001
| null | null |
hep-ph
| null |
We have estimated the contributions to the moments of polarized nucleon
structure function $g_1(x,Q^2)$ coming from the region of the very low x
($10^{-5}<x$). Our approach uses the nucleon structure function extrapolated to
the region of low x by the means of the double $ln^2(1/x)$ resummation. The
$Q^2$ evolution of $g_1$ was described by the unified evolution equations
incorporating both the leading order Altarelli-Parisi evolution at large and
moderate x, and the double $ln^2(1/x)$ resummation at small x. The moments were
obtained by integrating out the extrapolated nucleon structure function in the
region $10^{-5}<x<1$.
|
[{'version': 'v1', 'created': 'Mon, 16 Jul 2001 11:59:45 GMT'}]
|
2014-11-17
|
[array(['Ziaja', 'B.', ''], dtype=object)]
|
3,957 |
2103.02791
|
Yi Jiang
|
Wei Zhang and Yi Jiang and Bin Zhou and Die Hu
|
Hybrid Interference Mitigation Using Analog Prewhitening
|
11 pages, 11 figures
| null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper proposes a novel scheme for mitigating strong interferences, which
is applicable to various wireless scenarios, including full-duplex wireless
communications and uncoordinated heterogenous networks. As strong interferences
can saturate the receiver's analog-to-digital converters (ADC), they need to be
mitigated both before and after the ADCs, i.e., via hybrid processing. The key
idea of the proposed scheme, namely the Hybrid Interference Mitigation using
Analog Prewhitening (HIMAP), is to insert an M-input M-output analog phase
shifter network (PSN) between the receive antennas and the ADCs to spatially
prewhiten the interferences, which requires no signal information but only an
estimate of the covariance matrix. After interference mitigation by the PSN
prewhitener, the preamble can be synchronized, the signal channel response can
be estimated, and thus a minimum mean squared error (MMSE) beamformer can be
applied in the digital domain to further mitigate the residual interferences.
The simulation results verify that the HIMAP scheme can suppress interferences
80dB stronger than the signal by using off-the-shelf phase shifters (PS) of
6-bit resolution.
|
[{'version': 'v1', 'created': 'Thu, 4 Mar 2021 02:26:08 GMT'}]
|
2021-03-05
|
[array(['Zhang', 'Wei', ''], dtype=object)
array(['Jiang', 'Yi', ''], dtype=object)
array(['Zhou', 'Bin', ''], dtype=object)
array(['Hu', 'Die', ''], dtype=object)]
|
3,958 |
2005.02212
|
Daren Wei
|
Adam Kanigowski, Philipp Kunde, Kurt Vinhage, Daren Wei
|
Slow entropy of higher rank abelian unipotent actions
|
29 pages
| null | null | null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study slow entropy invariants for abelian unipotent actions $U$ on any
finite volume homogeneous space $G/\Gamma$. For every such action we show that
the topological slow entropy can be computed directly from the dimension of a
special decomposition of $\operatorname{Lie}(G)$ induced by
$\operatorname{Lie}(U)$. Moreover, we are able to show that the metric slow
entropy of the action coincides with its topological slow entropy. As a
corollary, we obtain that the complexity of any abelian horocyclic action is
only related to the dimension of $G$. This generalizes the rank one results
from [A. Kanigowski, K. Vinhage, D. Wei, Commun. Math. Phys. 370 (2019), no. 2,
449-474.] to higher rank abelian actions.
|
[{'version': 'v1', 'created': 'Tue, 5 May 2020 14:19:12 GMT'}]
|
2020-05-06
|
[array(['Kanigowski', 'Adam', ''], dtype=object)
array(['Kunde', 'Philipp', ''], dtype=object)
array(['Vinhage', 'Kurt', ''], dtype=object)
array(['Wei', 'Daren', ''], dtype=object)]
|
3,959 |
2101.07537
|
Partha Pratim Deka
|
P. P. Deka, G. C. Dewangan, K. P. Singh and J. Postma
|
A pair of UV nuclei or a compact star forming region near the active
nucleus in Mrk~766?
| null | null |
10.1007/s12036-021-09695-6
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the discovery of a bright, compact ultraviolet source at a
projected separation of 1.1~kpc from the known active galactic nucleus (AGN) in
Mrk~766 based on Astrosat/UVIT observations. We perform radial profile analysis
and derive the UV flux almost free from the nearby contaminating sources. The
new source is about 2.5 and 5.6 times fainter than the AGN in the far and near
UV bands. The two sources appear as a pair of nuclei in Mrk~766. We investigate
the nature of the new source based on the UV flux ratio, X-ray and optical
emission. The new source is highly unlikely to be another accreting
supermassive black hole in Mrk~766 as it lacks X-ray emission. We find that the
UV/Optical flux of the new source measured at four different bands closely
follow the shape of the template spectrum of starburst galaxies. This strongly
suggests that the new source is a compact star-forming region.
|
[{'version': 'v1', 'created': 'Tue, 19 Jan 2021 09:50:57 GMT'}]
|
2021-06-23
|
[array(['Deka', 'P. P.', ''], dtype=object)
array(['Dewangan', 'G. C.', ''], dtype=object)
array(['Singh', 'K. P.', ''], dtype=object)
array(['Postma', 'J.', ''], dtype=object)]
|
3,960 |
cs/0602065
|
Paul Vitanyi
|
Rudi Cilibrasi (CWI) and Paul Vitanyi (CWI and University of
Amsterdam)
|
Similarity of Objects and the Meaning of Words
|
LaTeX, 25 pages, 7 figures. Proc. 3rd Conf. Theory and Applications
of Models of Computation (TAMC), 15-20 May, 2006, Beijing, China (Invited
paper) This is an extended version of the 5-page abstract cs.IR/0504089
| null | null | null |
cs.CV cs.IR
| null |
We survey the emerging area of compression-based, parameter-free, similarity
distance measures useful in data-mining, pattern recognition, learning and
automatic semantics extraction. Given a family of distances on a set of
objects, a distance is universal up to a certain precision for that family if
it minorizes every distance in the family between every two objects in the set,
up to the stated precision (we do not require the universal distance to be an
element of the family). We consider similarity distances for two types of
objects: literal objects that as such contain all of their meaning, like
genomes or books, and names for objects. The latter may have literal
embodyments like the first type, but may also be abstract like ``red'' or
``christianity.'' For the first type we consider a family of computable
distance measures corresponding to parameters expressing similarity according
to particular featuresdistances generated by web users corresponding to
particular semantic relations between the (names for) the designated objects.
For both families we give universal similarity distance measures, incorporating
all particular distance measures in the family. In the first case the universal
distance is based on compression and in the second case it is based on Google
page counts related to search terms. In both cases experiments on a massive
scale give evidence of the viability of the approaches. between pairs of
literal objects. For the second type we consider similarity
|
[{'version': 'v1', 'created': 'Fri, 17 Feb 2006 16:15:07 GMT'}]
|
2007-05-23
|
[array(['Cilibrasi', 'Rudi', '', 'CWI'], dtype=object)
array(['Vitanyi', 'Paul', '', 'CWI and University of\n Amsterdam'],
dtype=object) ]
|
3,961 |
2010.08523
|
Alessandro Ravoni
|
Alessandro Ravoni
|
Long-term behaviours of Autocatalytic Sets
| null | null | null | null |
q-bio.MN nlin.AO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Autocatalytic Sets are reaction networks theorised as networks at the basis
of life. Their main feature is the ability of spontaneously emerging and
self-reproducing. The Reflexively and Food-generated theory provides a formal
definition of Autocatalytic Sets in terms of graphs with peculiar topological
properties. This formalisation has been proved to be a powerful tool for the
study of the chemical networks underlying life, and it was able to identify
autocatalytic structures in real metabolic networks. However, the dynamical
behaviour of such networks has not been yet complitely clarified. In this work,
we present a first attempt to connect the topology of an Autocatalytic Set with
its dynamics. For this purpose, we represent Autocatalytic Sets in terms of
Chemical Reaction Networks, and we use the Chemical Reaction Network theory to
detect motifs in the networks'structure, that allow us to determine the
long-term behaviour of the system.
|
[{'version': 'v1', 'created': 'Fri, 16 Oct 2020 17:29:18 GMT'}]
|
2020-10-19
|
[array(['Ravoni', 'Alessandro', ''], dtype=object)]
|
3,962 |
math/0509437
|
Pere Ara
|
Pere Ara, Martin Mathieu
|
A not so simple local multiplier algebra
|
18 pages
| null | null | null |
math.OA
| null |
We construct an AF-algebra $A$ such that its local multiplier algebra
$M_{\text{loc}}(A)$ does not agree with $M_{\text{loc}}(M_{\text{loc}}(A))$,
thus answering a question raised by G.K. Pedersen in 1978.
|
[{'version': 'v1', 'created': 'Mon, 19 Sep 2005 18:17:47 GMT'}]
|
2007-05-23
|
[array(['Ara', 'Pere', ''], dtype=object)
array(['Mathieu', 'Martin', ''], dtype=object)]
|
3,963 |
1812.07605
|
Mustafa Kandemir
|
Mustafa Kandemir, Altan Cakir
|
Comparison of Plastic Antineutrino Detector Designs in the Context of
Near Field Reactor Monitoring
| null |
Nucl. Instrum. Methods. Phys. Res. A. 927 (2019) 353-361
|
10.1016/j.nima.2019.02.055
|
NIMA-D-18-01340
|
physics.ins-det hep-ex nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We compare existing segmented plastic antineutrino detectors with our new
geometrically improved design for antineutrino detection and light collection
efficiency. The purpose of this study is to determine the most suitable design
style for remote reactor monitoring in the context of nuclear safeguards. Using
Monte Carlo based GEANT4 simulation package, we perform detector simulation
based on two prominent experiments: Plastic antineutrino detector array (Panda)
and Core monitoring by reactor antineutrino detector (Cormorad). In addition to
these two well-known designs, another concept, the Panda2, can be obtained by
making a small variation of Panda detector, is also considered in the
simulation. The results show that the light collection efficiency of the
Cormorad is substantially less with respect to the other two detectors while
the highest antineutrino detection efficiency is achieved with the Cormorad and
Panda2. Furthermore, as an alternative to these design choices, which are
composed of an array of identical rectangular-shaped modules, we propose to
combine regular hexagonal-shaped modules which minimizes the surface area of
the whole detector and consequently reduces the number of optical readout
channels considerably. With this approach, it is possible to obtain a detector
configuration with a slightly higher detection efficiency with respect to the
Panda design and a better energy resolution detector compared to the Cormorad
design.
|
[{'version': 'v1', 'created': 'Tue, 18 Dec 2018 19:17:31 GMT'}
{'version': 'v2', 'created': 'Fri, 21 Dec 2018 12:21:04 GMT'}
{'version': 'v3', 'created': 'Mon, 18 Feb 2019 12:57:26 GMT'}
{'version': 'v4', 'created': 'Wed, 20 Feb 2019 08:20:44 GMT'}]
|
2019-03-07
|
[array(['Kandemir', 'Mustafa', ''], dtype=object)
array(['Cakir', 'Altan', ''], dtype=object)]
|
3,964 |
1812.07944
|
James Duffy
|
James A. Duffy and Ioannis Kasparis
|
Estimation and Inference in the Presence of Fractional d=1/2 and Weakly
Nonstationary Processes
|
Authors' accepted manuscript; to appear in the Annals of Statistics
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide new limit theory for functionals of a general class of processes
lying at the boundary between stationarity and nonstationarity -- what we term
weakly nonstationary processes (WNPs). This includes, as leading examples,
fractional processes with d=1/2, and arrays of autoregressive processes with
roots drifting slowly towards unity. We first apply the theory to study
inference in parametric and nonparametric regression models involving WNPs as
covariates. We then use these results to develop a new specification test for
parametric regression models. By construction, our specification test statistic
has a chi-squared limiting distribution regardless of the form and extent of
persistence of the regressor, implying that a practitioner can validly perform
the test using a fixed critical value, while remaining agnostic about the
mechanism generating the regressor. Simulation exercises confirm that the test
controls size across a wide range of data generating processes, and outperforms
a comparable test due to Wang and Phillips (2012, Ann. Stat.) against many
alternatives.
|
[{'version': 'v1', 'created': 'Wed, 19 Dec 2018 13:50:47 GMT'}
{'version': 'v2', 'created': 'Thu, 20 Feb 2020 16:39:44 GMT'}
{'version': 'v3', 'created': 'Thu, 13 Aug 2020 23:45:01 GMT'}]
|
2020-08-17
|
[array(['Duffy', 'James A.', ''], dtype=object)
array(['Kasparis', 'Ioannis', ''], dtype=object)]
|
3,965 |
1107.2191
|
Snigdhayan Mahanta
|
Snigdhayan Mahanta
|
Assembly maps with coefficients in topological algebras and the integral
K-theoretic Novikov conjecture
|
v2 Exposition improved; one lemma and grant acknowledgement added; v3
some terminology changed and details added, Theorems 4.5 and 4.7 in v3 need
an extra hypothesis; v4 abridged version accepted for publication in JHRS
|
J. Homotopy Relat. Struct., 9 (2), 299-315, 2014
|
10.1007/s40062-013-0027-6
| null |
math.KT math.AT math.GT math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that any countable discrete and torsion free subgroup of a general
linear group over an arbitrary field or a similar subgroup of an almost
connected Lie group satisfies the integral algebraic K-theoretic (split)
Novikov conjecture over \cpt and \S, where \cpt denotes the C^*-algebra of
compact operators and \S denotes the algebra of Schatten class operators. We
introduce assembly maps with finite coefficients and under an additional
hypothesis, we prove that such a group also satisfies the algebraic K-theoretic
Novikov conjecture over \bar{\mathbb{Q}} and \mathbb{C} with finite
coefficients. For all torsion free Gromov hyperbolic groups G, we demonstrate
that the canonical algebra homomorphism \cpt[G]\map C^*_r(G)\hat{\otimes}\cpt
induces an isomorphism between their algebraic K-theory groups.
|
[{'version': 'v1', 'created': 'Tue, 12 Jul 2011 05:53:38 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Aug 2011 07:40:13 GMT'}
{'version': 'v3', 'created': 'Fri, 20 Jan 2012 04:14:12 GMT'}
{'version': 'v4', 'created': 'Thu, 20 Jun 2013 15:59:55 GMT'}]
|
2015-08-05
|
[array(['Mahanta', 'Snigdhayan', ''], dtype=object)]
|
3,966 |
1509.03580
|
Steven Brunton
|
Steven L. Brunton, Joshua L. Proctor, J. Nathan Kutz
|
Discovering governing equations from data: Sparse identification of
nonlinear dynamical systems
|
26 Pages, 13 Figures, 7 Tables
| null |
10.1073/pnas.1517384113
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The ability to discover physical laws and governing equations from data is
one of humankind's greatest intellectual achievements. A quantitative
understanding of dynamic constraints and balances in nature has facilitated
rapid development of knowledge and enabled advanced technological achievements,
including aircraft, combustion engines, satellites, and electrical power. In
this work, we combine sparsity-promoting techniques and machine learning with
nonlinear dynamical systems to discover governing physical equations from
measurement data. The only assumption about the structure of the model is that
there are only a few important terms that govern the dynamics, so that the
equations are sparse in the space of possible functions; this assumption holds
for many physical systems. In particular, we use sparse regression to determine
the fewest terms in the dynamic governing equations required to accurately
represent the data. The resulting models are parsimonious, balancing model
complexity with descriptive ability while avoiding overfitting. We demonstrate
the algorithm on a wide range of problems, from simple canonical systems,
including linear and nonlinear oscillators and the chaotic Lorenz system, to
the fluid vortex shedding behind an obstacle. The fluid example illustrates the
ability of this method to discover the underlying dynamics of a system that
took experts in the community nearly 30 years to resolve. We also show that
this method generalizes to parameterized, time-varying, or externally forced
systems.
|
[{'version': 'v1', 'created': 'Fri, 11 Sep 2015 16:43:06 GMT'}]
|
2016-04-27
|
[array(['Brunton', 'Steven L.', ''], dtype=object)
array(['Proctor', 'Joshua L.', ''], dtype=object)
array(['Kutz', 'J. Nathan', ''], dtype=object)]
|
3,967 |
1107.2852
|
Ilya Y. Dodin
|
I. Y. Dodin
|
Ponderomotive forces and wave dispersion: two sides of the same coin
| null | null | null | null |
physics.plasm-ph math-ph math.MP quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Presented here is a general view on adiabatic and resonant wave-particle
interactions leading to a uniform description of nonlinear ponderomotive
effects in very different environments, from low-temperature plasmas to
relativistic plasmas or even atoms in laser light. Treating the wave-particle
interaction as a classical mode-coupling problem, this theory shows the
inherent connection between the ponderomotive forces and the properties of
waves causing those forces. The adiabatic Lagrangians are derived for single
particles and nonlinear waves, possibly carrying trapped particles, and yield
both the dynamic equations and the nonlinear dispersion relations in the
general case.
|
[{'version': 'v1', 'created': 'Thu, 14 Jul 2011 15:35:53 GMT'}]
|
2011-07-15
|
[array(['Dodin', 'I. Y.', ''], dtype=object)]
|
3,968 |
0712.3691
|
Christian Sevenheck
|
Claus Hertling, Christian Sevenheck
|
Curvature of classifying spaces for Brieskorn lattices
|
25 pages
| null |
10.1016/j.geomphys.2008.07.008
| null |
math.AG math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study tt*-geometry on the classifying space for regular singular
TERP-structures, e.g., Fourier-Laplace transformations of Brieskorn lattices of
isolated hypersurface singularities. We show that (a part of) this classifying
space can be canonically equipped with a hermitian structure. We derive an
estimate for the holomorphic sectional curvature of this hermitian metric,
which is the analogue of a similar result for classifying spaces of pure
polarized Hodge structures.
|
[{'version': 'v1', 'created': 'Fri, 21 Dec 2007 13:30:16 GMT'}
{'version': 'v2', 'created': 'Mon, 14 Jul 2008 16:27:20 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Aug 2008 11:38:56 GMT'}]
|
2009-11-13
|
[array(['Hertling', 'Claus', ''], dtype=object)
array(['Sevenheck', 'Christian', ''], dtype=object)]
|
3,969 |
2112.12825
|
Takuya Okugawa
|
T. Okugawa, A. Benyamini, A. J. Millis, and D. M. Kennes
|
Anti-Poiseuille Flow: Increased Vortex Velocity at Superconductor Edges
| null | null |
10.1103/PhysRevB.105.224512
| null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the time-dependent Ginzburg Landau equations we study vortex motion
driven by an applied current in two dimensional superconductors in the presence
of a physical boundary. At smaller sourced currents the vortex lattice moves as
a whole, with each vortex moving at the same velocity. At larger sourced
current, vortex motion is organized into channels, with vortices in channels
nearer to the sample edges moving faster than those farther away from sample
edges, opposite to the Poiseuille flow of basic hydrodynamics where the
velocity is lowest at the boundaries. At intermediate currents, a stick-slip
motion of the vortex lattice occurs in which vortices in the channel at the
boundary break free from the Abrikosov lattice, accelerate, move past their
neighbors and then slow down and reattach to the vortex lattice at which point
the stick-slip process starts over. These effects could be observed
experimentally, e.g. using fast scanning microscopy techniques.
|
[{'version': 'v1', 'created': 'Thu, 23 Dec 2021 19:58:19 GMT'}]
|
2022-07-13
|
[array(['Okugawa', 'T.', ''], dtype=object)
array(['Benyamini', 'A.', ''], dtype=object)
array(['Millis', 'A. J.', ''], dtype=object)
array(['Kennes', 'D. M.', ''], dtype=object)]
|
3,970 |
0908.4199
|
Muhammad Sharif
|
M. Sharif and Umber Sheikh
|
Wave Properties of Isothermal Magneto-Rotational Fluids
|
29 pages, 24 figures accepted for publication in Canadian J. Physics
|
Canadian J. Phys. 87(2009)879-894
|
10.1139/P09-025
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, the isothermal plasma wave properties in the neighborhood of
the pair production region for the Kerr black hole magnetosphere are discussed.
We have considered the Fourier analyzed form of the perturbed general
relativistic magnetohydrodynamical equations whose determinant leads to a
dispersion relation. For the special scenario, the $x$-component of the complex
wave vectors are numerically calculated. Respective components of the
propagation vector, attenuation vector, phase and group velocities are shown in
graphs. We have particularly investigated the existence of a Veselago medium
and wave behavior (modes of waves dispersion
|
[{'version': 'v1', 'created': 'Fri, 28 Aug 2009 08:29:20 GMT'}]
|
2015-05-14
|
[array(['Sharif', 'M.', ''], dtype=object)
array(['Sheikh', 'Umber', ''], dtype=object)]
|
3,971 |
1308.5289
|
Andreea Nicoara
|
Andreea C. Nicoara
|
Coherence and Other Properties of Sheaves in the Kohn Algorithm
|
12 pages
|
International Journal of Mathematics 25 (2014) no.8
|
10.1142/S0129167X14500773
| null |
math.AG math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the smooth case, we prove quasi-flasqueness for the sheaves of all
subelliptic multipliers as well as at each of the steps of the Kohn algorithm
on a pseudoconvex domain in $\C^n.$ We use techniques by Jean-Claude Tougeron
to show that if the domain has a real-analytic defining function, the modified
Kohn algorithm involving generating ideals and taking real radicals only in the
ring of real-analytic germs yields quasi-coherent sheaves. This sharpens a
result obtained by J. J. Kohn in 1979.
|
[{'version': 'v1', 'created': 'Sat, 24 Aug 2013 03:52:29 GMT'}]
|
2014-08-13
|
[array(['Nicoara', 'Andreea C.', ''], dtype=object)]
|
3,972 |
2010.15526
|
Kelly Payette
|
Kelly Payette, Priscille de Dumast, Hamza Kebiri, Ivan Ezhov, Johannes
C. Paetzold, Suprosanna Shit, Asim Iqbal, Romesa Khan, Raimund Kottke,
Patrice Grehten, Hui Ji, Levente Lanczi, Marianna Nagy, Monika Beresova, Thi
Dao Nguyen, Giancarlo Natalucci, Theofanis Karayannis, Bjoern Menze,
Meritxell Bach Cuadra, Andras Jakab
|
An automatic multi-tissue human fetal brain segmentation benchmark using
the Fetal Tissue Annotation Dataset
|
This is a preprint of an article published in Nature Scientific Data.
The final authenticated version is available online at:
https://doi.org/10.1038/s41597-021-00946-3
|
Sci Data 8, 167 (2021)
|
10.1038/s41597-021-00946-3
| null |
eess.IV cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is critical to quantitatively analyse the developing human fetal brain in
order to fully understand neurodevelopment in both normal fetuses and those
with congenital disorders. To facilitate this analysis, automatic multi-tissue
fetal brain segmentation algorithms are needed, which in turn requires open
databases of segmented fetal brains. Here we introduce a publicly available
database of 50 manually segmented pathological and non-pathological fetal
magnetic resonance brain volume reconstructions across a range of gestational
ages (20 to 33 weeks) into 7 different tissue categories (external
cerebrospinal fluid, grey matter, white matter, ventricles, cerebellum, deep
grey matter, brainstem/spinal cord). In addition, we quantitatively evaluate
the accuracy of several automatic multi-tissue segmentation algorithms of the
developing human fetal brain. Four research groups participated, submitting a
total of 10 algorithms, demonstrating the benefits the database for the
development of automatic algorithms.
|
[{'version': 'v1', 'created': 'Thu, 29 Oct 2020 12:46:05 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Feb 2021 15:39:55 GMT'}
{'version': 'v3', 'created': 'Thu, 29 Apr 2021 14:53:33 GMT'}
{'version': 'v4', 'created': 'Wed, 7 Jul 2021 12:17:26 GMT'}]
|
2021-07-08
|
[array(['Payette', 'Kelly', ''], dtype=object)
array(['de Dumast', 'Priscille', ''], dtype=object)
array(['Kebiri', 'Hamza', ''], dtype=object)
array(['Ezhov', 'Ivan', ''], dtype=object)
array(['Paetzold', 'Johannes C.', ''], dtype=object)
array(['Shit', 'Suprosanna', ''], dtype=object)
array(['Iqbal', 'Asim', ''], dtype=object)
array(['Khan', 'Romesa', ''], dtype=object)
array(['Kottke', 'Raimund', ''], dtype=object)
array(['Grehten', 'Patrice', ''], dtype=object)
array(['Ji', 'Hui', ''], dtype=object)
array(['Lanczi', 'Levente', ''], dtype=object)
array(['Nagy', 'Marianna', ''], dtype=object)
array(['Beresova', 'Monika', ''], dtype=object)
array(['Nguyen', 'Thi Dao', ''], dtype=object)
array(['Natalucci', 'Giancarlo', ''], dtype=object)
array(['Karayannis', 'Theofanis', ''], dtype=object)
array(['Menze', 'Bjoern', ''], dtype=object)
array(['Cuadra', 'Meritxell Bach', ''], dtype=object)
array(['Jakab', 'Andras', ''], dtype=object)]
|
3,973 |
2202.07761
|
Alexandros Hollender
|
Mika G\"o\"os, Alexandros Hollender, Siddhartha Jain, Gilbert Maystre,
William Pires, Robert Robere, Ran Tao
|
Further Collapses in TFNP
| null | null | null | null |
cs.CC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show $\textsf{EOPL}=\textsf{PLS}\cap\textsf{PPAD}$. Here the class
$\textsf{EOPL}$ consists of all total search problems that reduce to the
End-of-Potential-Line problem, which was introduced in the works by Hubacek and
Yogev (SICOMP 2020) and Fearnley et al. (JCSS 2020). In particular, our result
yields a new simpler proof of the breakthrough collapse
$\textsf{CLS}=\textsf{PLS}\cap\textsf{PPAD}$ by Fearnley et al. (STOC 2021). We
also prove a companion result $\textsf{SOPL}=\textsf{PLS}\cap\textsf{PPADS}$,
where $\textsf{SOPL}$ is the class associated with the Sink-of-Potential-Line
problem.
|
[{'version': 'v1', 'created': 'Tue, 15 Feb 2022 22:24:36 GMT'}
{'version': 'v2', 'created': 'Fri, 20 May 2022 17:36:32 GMT'}]
|
2022-05-23
|
[array(['Göös', 'Mika', ''], dtype=object)
array(['Hollender', 'Alexandros', ''], dtype=object)
array(['Jain', 'Siddhartha', ''], dtype=object)
array(['Maystre', 'Gilbert', ''], dtype=object)
array(['Pires', 'William', ''], dtype=object)
array(['Robere', 'Robert', ''], dtype=object)
array(['Tao', 'Ran', ''], dtype=object)]
|
3,974 |
0710.0278
|
Chao-Yang Lu
|
Chao-Yang Lu, Wei-Bo Gao, Otfried G\"uhne, Xiao-Qi Zhou, Zeng-Bing
Chen, Jian-Wei Pan
|
Demonstrating anyonic fractional statistics with a six-qubit quantum
simulator
|
revised version 3, revTex, 4.3 pages, 4 figures, notes and reference
added
|
Phys.Rev.Lett.102:030502,2009
|
10.1103/PhysRevLett.102.030502
| null |
quant-ph cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Anyons are exotic quasiparticles living in two dimensions that do not fit
into the usual categories of fermions and bosons, but obey a new form of
fractional statistics. Following a recent proposal [Phys. Rev. Lett. 98, 150404
(2007)], we present an experimental demonstration of the fractional statistics
of anyons in the Kitaev spin lattice model using a photonic quantum simulator.
We dynamically create the ground state and excited states (which are six-qubit
graph states) of the Kitaev model Hamiltonian, and implement the anyonic
braiding and fusion operations by single-qubit rotations. A phase shift of
$\pi$ related to the anyon braiding is observed, confirming the prediction of
the fractional statistics of Abelian 1/2-anyons.
|
[{'version': 'v1', 'created': 'Mon, 1 Oct 2007 12:46:41 GMT'}
{'version': 'v2', 'created': 'Thu, 31 Jan 2008 12:19:33 GMT'}
{'version': 'v3', 'created': 'Thu, 16 Oct 2008 03:52:28 GMT'}]
|
2010-04-22
|
[array(['Lu', 'Chao-Yang', ''], dtype=object)
array(['Gao', 'Wei-Bo', ''], dtype=object)
array(['Gühne', 'Otfried', ''], dtype=object)
array(['Zhou', 'Xiao-Qi', ''], dtype=object)
array(['Chen', 'Zeng-Bing', ''], dtype=object)
array(['Pan', 'Jian-Wei', ''], dtype=object)]
|
3,975 |
2301.13814
|
Chunwei Hsu
|
Chunwei Hsu, Michael Rohde, Gabriela Borin Barin, Guido Gandus,
Daniele Passerone, Mathieu Luisier, Pascal Ruffieux, Roman Fasel, Herre S. J.
van der Zant, Maria El Abbassi
|
Platinum contacts for 9-atom-wide armchair graphene nanoribbons
|
6 pages, 5 figures
|
Appl. Phys. Lett. 122, 173104 (2023)
|
10.1063/5.0143663
| null |
cond-mat.mes-hall
|
http://creativecommons.org/licenses/by/4.0/
|
Creating a good contact between electrodes and graphene nanoribbons (GNRs)
has been a longstanding challenge in searching for the next GNR-based
nanoelectronics. This quest requires the controlled fabrication of sub-20 nm
metallic gaps, a clean GNR transfer minimizing damage and organic contamination
during the device fabrication, as well as work function matching to minimize
the contact resistance. Here, we transfer 9-atom-wide armchair-edged GNRs
(9-AGNRs) grown on Au(111)/mica substrates to pre-patterned platinum
electrodes, yielding polymer-free 9-AGNR field-effect transistor devices. Our
devices have a resistance in the range of $10^6$ to $10^8$ $\Omega$ in the
low-bias regime, which is 2 to 4 orders of magnitude lower than previous
reports. Density functional theory (DFT) calculations combined with the
non-equilibrium Green's function method (NEGF) explain the observed p-type
electrical characteristics and further demonstrate that platinum gives strong
coupling and higher transmission in comparison to other materials such as
graphene.
|
[{'version': 'v1', 'created': 'Tue, 31 Jan 2023 18:01:23 GMT'}]
|
2023-05-01
|
[array(['Hsu', 'Chunwei', ''], dtype=object)
array(['Rohde', 'Michael', ''], dtype=object)
array(['Barin', 'Gabriela Borin', ''], dtype=object)
array(['Gandus', 'Guido', ''], dtype=object)
array(['Passerone', 'Daniele', ''], dtype=object)
array(['Luisier', 'Mathieu', ''], dtype=object)
array(['Ruffieux', 'Pascal', ''], dtype=object)
array(['Fasel', 'Roman', ''], dtype=object)
array(['van der Zant', 'Herre S. J.', ''], dtype=object)
array(['Abbassi', 'Maria El', ''], dtype=object)]
|
3,976 |
1705.02985
|
Charles Jeon
|
Ramina Ghods, Charles Jeon, Gulnar Mirza, Arian Maleki, and Christoph
Studer
|
Optimally-Tuned Nonparametric Linear Equalization for Massive MU-MIMO
Systems
|
Will be presented at the 2017 IEEE International Symposium on
Information Theory
| null | null | null |
cs.IT eess.SP math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper deals with linear equalization in massive multi-user
multiple-input multiple-output (MU-MIMO) wireless systems. We first provide
simple conditions on the antenna configuration for which the well-known linear
minimum mean-square error (L-MMSE) equalizer provides near-optimal spectral
efficiency, and we analyze its performance in the presence of parameter
mismatches in the signal and/or noise powers. We then propose a novel,
optimally-tuned NOnParametric Equalizer (NOPE) for massive MU-MIMO systems,
which avoids knowledge of the transmit signal and noise powers altogether. We
show that NOPE achieves the same performance as that of the L-MMSE equalizer in
the large-antenna limit, and we demonstrate its efficacy in realistic,
finite-dimensional systems. From a practical perspective, NOPE is
computationally efficient and avoids dedicated training that is typically
required for parameter estimation
|
[{'version': 'v1', 'created': 'Mon, 8 May 2017 17:34:30 GMT'}]
|
2018-11-12
|
[array(['Ghods', 'Ramina', ''], dtype=object)
array(['Jeon', 'Charles', ''], dtype=object)
array(['Mirza', 'Gulnar', ''], dtype=object)
array(['Maleki', 'Arian', ''], dtype=object)
array(['Studer', 'Christoph', ''], dtype=object)]
|
3,977 |
1405.2131
|
Jiangtao Su
|
J.T. Su, J. Jing, S. Wang, T. Wiegelmann and H.M. Wang
|
Statistical study of free magnetic energy and flare productivity of
solar active regions
|
The paper was submitted to ApJ and it is accepted now
| null |
10.1088/0004-637X/788/2/150
| null |
astro-ph.SR
|
http://creativecommons.org/licenses/by-nc-sa/3.0/
|
Photospheric vector magnetograms from Helioseismic and Magnetic Imager on
board the Solar Dynamic Observatory are utilized as the boundary conditions to
extrapolate both non-linear force-free and potential magnetic fields in solar
corona. Based on the extrapolations, we are able to determine the free magnetic
energy (FME) stored in active regions (ARs). Over 3000 vector magnetograms in
61 ARs were analyzed. We compare FME with ARs' flare index (FI) and find that
there is a weak correlation ($<60\%$) between FME and FI. FME shows slightly
improved flare predictability relative to total unsigned magnetic flux of ARs
in the following two aspects: (1) the flare productivity predicted by FME is
higher than that predicted by magnetic flux and (2) the correlation between FI
and FME is higher than that between FI and magnetic flux. However, this
improvement is not significant enough to make a substantial difference in
time-accumulated FI, rather than individual flare, predictions.
|
[{'version': 'v1', 'created': 'Fri, 9 May 2014 02:15:03 GMT'}]
|
2015-06-19
|
[array(['Su', 'J. T.', ''], dtype=object)
array(['Jing', 'J.', ''], dtype=object)
array(['Wang', 'S.', ''], dtype=object)
array(['Wiegelmann', 'T.', ''], dtype=object)
array(['Wang', 'H. M.', ''], dtype=object)]
|
3,978 |
1606.08144
|
Giampiero Esposito Dr.
|
Giampiero Esposito, Raju Roychowdhury
|
From pseudo-holomorphic functions to the associated real manifold
|
25 pages
| null | null | null |
math.CV math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper studies first the differential inequalities that make it possible
to build a global theory of pseudo-holomorphic functions in the case of one or
several complex variables. In the case of one complex dimension, we prove that
the differential inequalities describing pseudo-holomorphic functions can be
used to define a one-real-dimensional manifold (by the vanishing of a function
with nonzero gradient), which is here a 1-parameter family of plane curves. On
studying the associated envelopes, such a parameter can be eliminated by
solving two nonlinear partial differential equations. The classical
differential geometry of curves can be therefore exploited to get a novel
perspective on the equations describing the global theory of pseudo-holomorphic
functions.
|
[{'version': 'v1', 'created': 'Mon, 27 Jun 2016 07:23:17 GMT'}]
|
2016-06-28
|
[array(['Esposito', 'Giampiero', ''], dtype=object)
array(['Roychowdhury', 'Raju', ''], dtype=object)]
|
3,979 |
1711.00403
|
Eduardo Rozo
|
DES Collaboration: T. M. C. Abbott, F. B. Abdalla, J. Annis, K.
Bechtol, B. A. Benson, R. A. Bernstein, G. M. Bernstein, E. Bertin, D.
Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J.
Castander, C. L. Chang, T. M. Crawford, C. E. Cunha, C. B. D'Andrea, L. N. da
Costa, C. Davis, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A.
Drlica-Wagner, A. E. Evrard, E. Fernandez, B. Flaugher, J. Frieman, J.
Garcia-Bellido, E. Gaztanaga, D. W. Gerdes, T. Giannantonio, D. Gruen, R. A.
Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, J. W. Henning, K.
Honscheid, B. Hoyle, B. Jain, D. J. James, M. Jarvis, T. Jeltema, M. D.
Johnson, M. W. G. Johnson, E. Krause, K. Kuehn, S. Kuhlmann, N. Kuropatkin,
O. Lahav, A. R. Liddle, M. Lima, H. Lin, M. A. G. Maia, A. Manzotti, M.
March, J. L. Marshall, R. Miquel, J. J. Mohr, T. Natoli, P. Nugent, R. L. C.
Ogando, Y. Park, A. A. Plazas, C. L. Reichardt, K. Reil, A. Roodman, A. J.
Ross, E. Rozo, E. S. Rykoff, E. Sanchez, V. Scarpine, M. Schubnell, I.
Sevilla-Noarbe, M. Smith, R. C. Smith, M. Soares-Santos, F. Sobreira, E.
Suchyta, G. Tarle, D. Thomas, M. A. Troxel, A. R. Walker, R. H. Wechsler, J.
Weller, W. Wester, W. L. K. Wu, J. Zuntz
|
Dark Energy Survey Year 1 Results: A Precise H0 Measurement from DES Y1,
BAO, and D/H Data
|
11 pages, 2 figures
| null |
10.1093/mnras/sty1939
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We combine Dark Energy Survey Year 1 clustering and weak lensing data with
Baryon Acoustic Oscillations (BAO) and Big Bang Nucleosynthesis (BBN)
experiments to constrain the Hubble constant. Assuming a flat $\Lambda$CDM
model with minimal neutrino mass ($\sum m_\nu = 0.06$ eV) we find
$H_0=67.2^{+1.2}_{-1.0}$ km/s/Mpc (68% CL). This result is completely
independent of Hubble constant measurements based on the distance ladder,
Cosmic Microwave Background (CMB) anisotropies (both temperature and
polarization), and strong lensing constraints. There are now five data sets
that: a) have no shared observational systematics; and b) each constrain the
Hubble constant with a few percent level precision. We compare these five
independent measurements, and find that, as a set, the differences between them
are significant at the $2.1\sigma$ level ($\chi^2/dof=20.1/11$, probability to
exceed=4%). This difference is low enough that we consider the data sets
statistically consistent with each other. The best fit Hubble constant obtained
by combining all five data sets is $H_0 = 69.1^{+0.4}_{-0.6}$ km/s/Mpc.
|
[{'version': 'v1', 'created': 'Wed, 1 Nov 2017 15:42:57 GMT'}]
|
2018-08-29
|
[array(['DES Collaboration', '', ''], dtype=object)
array(['Abbott', 'T. M. C.', ''], dtype=object)
array(['Abdalla', 'F. B.', ''], dtype=object)
array(['Annis', 'J.', ''], dtype=object)
array(['Bechtol', 'K.', ''], dtype=object)
array(['Benson', 'B. A.', ''], dtype=object)
array(['Bernstein', 'R. A.', ''], dtype=object)
array(['Bernstein', 'G. M.', ''], dtype=object)
array(['Bertin', 'E.', ''], dtype=object)
array(['Brooks', 'D.', ''], dtype=object)
array(['Burke', 'D. L.', ''], dtype=object)
array(['Rosell', 'A. Carnero', ''], dtype=object)
array(['Kind', 'M. Carrasco', ''], dtype=object)
array(['Carretero', 'J.', ''], dtype=object)
array(['Castander', 'F. J.', ''], dtype=object)
array(['Chang', 'C. L.', ''], dtype=object)
array(['Crawford', 'T. M.', ''], dtype=object)
array(['Cunha', 'C. E.', ''], dtype=object)
array(["D'Andrea", 'C. B.', ''], dtype=object)
array(['da Costa', 'L. N.', ''], dtype=object)
array(['Davis', 'C.', ''], dtype=object)
array(['Desai', 'S.', ''], dtype=object)
array(['Diehl', 'H. T.', ''], dtype=object)
array(['Dietrich', 'J. P.', ''], dtype=object)
array(['Doel', 'P.', ''], dtype=object)
array(['Drlica-Wagner', 'A.', ''], dtype=object)
array(['Evrard', 'A. E.', ''], dtype=object)
array(['Fernandez', 'E.', ''], dtype=object)
array(['Flaugher', 'B.', ''], dtype=object)
array(['Frieman', 'J.', ''], dtype=object)
array(['Garcia-Bellido', 'J.', ''], dtype=object)
array(['Gaztanaga', 'E.', ''], dtype=object)
array(['Gerdes', 'D. W.', ''], dtype=object)
array(['Giannantonio', 'T.', ''], dtype=object)
array(['Gruen', 'D.', ''], dtype=object)
array(['Gruendl', 'R. A.', ''], dtype=object)
array(['Gschwend', 'J.', ''], dtype=object)
array(['Gutierrez', 'G.', ''], dtype=object)
array(['Hartley', 'W. G.', ''], dtype=object)
array(['Henning', 'J. W.', ''], dtype=object)
array(['Honscheid', 'K.', ''], dtype=object)
array(['Hoyle', 'B.', ''], dtype=object)
array(['Jain', 'B.', ''], dtype=object)
array(['James', 'D. J.', ''], dtype=object)
array(['Jarvis', 'M.', ''], dtype=object)
array(['Jeltema', 'T.', ''], dtype=object)
array(['Johnson', 'M. D.', ''], dtype=object)
array(['Johnson', 'M. W. G.', ''], dtype=object)
array(['Krause', 'E.', ''], dtype=object)
array(['Kuehn', 'K.', ''], dtype=object)
array(['Kuhlmann', 'S.', ''], dtype=object)
array(['Kuropatkin', 'N.', ''], dtype=object)
array(['Lahav', 'O.', ''], dtype=object)
array(['Liddle', 'A. R.', ''], dtype=object)
array(['Lima', 'M.', ''], dtype=object)
array(['Lin', 'H.', ''], dtype=object)
array(['Maia', 'M. A. G.', ''], dtype=object)
array(['Manzotti', 'A.', ''], dtype=object)
array(['March', 'M.', ''], dtype=object)
array(['Marshall', 'J. L.', ''], dtype=object)
array(['Miquel', 'R.', ''], dtype=object)
array(['Mohr', 'J. J.', ''], dtype=object)
array(['Natoli', 'T.', ''], dtype=object)
array(['Nugent', 'P.', ''], dtype=object)
array(['Ogando', 'R. L. C.', ''], dtype=object)
array(['Park', 'Y.', ''], dtype=object)
array(['Plazas', 'A. A.', ''], dtype=object)
array(['Reichardt', 'C. L.', ''], dtype=object)
array(['Reil', 'K.', ''], dtype=object)
array(['Roodman', 'A.', ''], dtype=object)
array(['Ross', 'A. J.', ''], dtype=object)
array(['Rozo', 'E.', ''], dtype=object)
array(['Rykoff', 'E. S.', ''], dtype=object)
array(['Sanchez', 'E.', ''], dtype=object)
array(['Scarpine', 'V.', ''], dtype=object)
array(['Schubnell', 'M.', ''], dtype=object)
array(['Sevilla-Noarbe', 'I.', ''], dtype=object)
array(['Smith', 'M.', ''], dtype=object)
array(['Smith', 'R. C.', ''], dtype=object)
array(['Soares-Santos', 'M.', ''], dtype=object)
array(['Sobreira', 'F.', ''], dtype=object)
array(['Suchyta', 'E.', ''], dtype=object)
array(['Tarle', 'G.', ''], dtype=object)
array(['Thomas', 'D.', ''], dtype=object)
array(['Troxel', 'M. A.', ''], dtype=object)
array(['Walker', 'A. R.', ''], dtype=object)
array(['Wechsler', 'R. H.', ''], dtype=object)
array(['Weller', 'J.', ''], dtype=object)
array(['Wester', 'W.', ''], dtype=object)
array(['Wu', 'W. L. K.', ''], dtype=object)
array(['Zuntz', 'J.', ''], dtype=object)]
|
3,980 |
2012.10413
|
Mikhail Nesterenko
|
Kendric Hood, Joseph Oglio, Mikhail Nesterenko, and Gokarna Sharma
|
Partitionable Asynchronous Cryptocurrency Blockchain
| null | null | null | null |
cs.DC
|
http://creativecommons.org/licenses/by/4.0/
|
We consider operation of blockchain-based cryptocurrency in case of
partitioning. We define the Partitionable Blockchain Consensus Problem. The
problem may have an interesting solution if the partitions proceed
independently by splitting accounts. We prove that this problem is not solvable
in the asynchronous system. The peers in the two partitions may not agree on
the last jointly mined block or, alternatively, on the starting point of
independent concurrent computation. We introduce a family of detectors that
enable a solution. We establish the relationship between detectors. We present
the algorithm that solves the Partitionable Blockchain Consensus Problem using
our detectors. We extend our solution to multiple splits, message loss and to
partition merging. We simulate and evaluate the performance of detectors,
discuss the implementation of the detectors and future work.
|
[{'version': 'v1', 'created': 'Fri, 18 Dec 2020 18:07:02 GMT'}]
|
2020-12-21
|
[array(['Hood', 'Kendric', ''], dtype=object)
array(['Oglio', 'Joseph', ''], dtype=object)
array(['Nesterenko', 'Mikhail', ''], dtype=object)
array(['Sharma', 'Gokarna', ''], dtype=object)]
|
3,981 |
1710.06470
|
Gelasio Salazar
|
Carolina Medina, Jorge Ram\'irez-Alfons\'in, Gelasio Salazar
|
On the number of unknot diagrams
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $D$ be a knot diagram, and let ${\mathcal D}$ denote the set of diagrams
that can be obtained from $D$ by crossing exchanges. If $D$ has $n$ crossings,
then ${\mathcal D}$ consists of $2^n$ diagrams. A folklore argument shows that
at least one of these $2^n$ diagrams is unknot, from which it follows that
every diagram has finite unknotting number. It is easy to see that this
argument can be used to show that actually ${\mathcal D}$ has more than one
unknot diagram, but it cannot yield more than $4n$ unknot diagrams. We improve
this linear bound to a superpolynomial bound, by showing that at least
$2^{\sqrt[3]{n}}$ of the diagrams in ${\mathcal D}$ are unknot. We also show
that either all the diagrams in ${\mathcal D}$ are unknot, or there is a
diagram in ${\mathcal D}$ that is a diagram of the trefoil knot.
|
[{'version': 'v1', 'created': 'Tue, 17 Oct 2017 18:56:21 GMT'}]
|
2017-10-19
|
[array(['Medina', 'Carolina', ''], dtype=object)
array(['Ramírez-Alfonsín', 'Jorge', ''], dtype=object)
array(['Salazar', 'Gelasio', ''], dtype=object)]
|
3,982 |
2012.13973
|
Hoang Son Le Mr
|
Hoang Son Le, Rini Akmeliawati, Gustavo Carneiro
|
Domain Generalisation with Domain Augmented Supervised Contrastive
Learning (Student Abstract)
| null | null | null | null |
cs.LG cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Domain generalisation (DG) methods address the problem of domain shift, when
there is a mismatch between the distributions of training and target domains.
Data augmentation approaches have emerged as a promising alternative for DG.
However, data augmentation alone is not sufficient to achieve lower
generalisation errors. This project proposes a new method that combines data
augmentation and domain distance minimisation to address the problems
associated with data augmentation and provide a guarantee on the learning
performance, under an existing framework. Empirically, our method outperforms
baseline results on DG benchmarks.
|
[{'version': 'v1', 'created': 'Sun, 27 Dec 2020 16:50:40 GMT'}]
|
2020-12-29
|
[array(['Le', 'Hoang Son', ''], dtype=object)
array(['Akmeliawati', 'Rini', ''], dtype=object)
array(['Carneiro', 'Gustavo', ''], dtype=object)]
|
3,983 |
0802.1242
|
Harsha Sanjeev Kumar
|
Harsha Sanjeev Kumar, Samar Safi-Harb
|
Variability of the High-Magnetic Field X-ray Pulsar PSR J1846-0258
Associated with the Supernova Remnant Kes 75 as Revealed by the Chandra X-ray
Observatory
|
Accepted by the Astrophysical Journal (Letters)
| null | null | null |
astro-ph
| null |
We present results from the archival Chandra observations of the 0.3 s X-ray
pulsar PSR J1846-0258 associated with the supernova remnant (SNR) Kes 75. The
pulsar has the highest spin-down luminosity (Edot = 8.3e36 erg/s) among all the
high magnetic field pulsars (HBPs) and has been classified as a Crab-like
pulsar despite its magnetic field (5e13 G) being above the quantum critical
field. It is the only HBP described by a non-thermal Crab-like spectrum,
powering a bright pulsar wind nebula (PWN). Our spectroscopic study shows
evidence of spectral softening (photon index = 1.32 to 1.97) and temporal
brightening (unabsorbed flux = 4.3e-12 to 2.7e-11 erg/cm^2/s) of the pulsar by
~6 times from 2000 to 2006. The 0.5-10 keV luminosity of the pulsar at the
revised distance of 6 kpc has also increased from 1.85e34 to 1.16e35 erg/s, and
the X-ray efficiency increased from 0.2% to 1.4%. The observed X-ray
brightening and softening of the pulsar suggests for the first time that this
HBP is revealing itself as a magnetar.
|
[{'version': 'v1', 'created': 'Sun, 10 Feb 2008 21:21:55 GMT'}
{'version': 'v2', 'created': 'Wed, 20 Feb 2008 16:26:09 GMT'}
{'version': 'v3', 'created': 'Mon, 17 Mar 2008 19:14:20 GMT'}]
|
2008-03-17
|
[array(['Kumar', 'Harsha Sanjeev', ''], dtype=object)
array(['Safi-Harb', 'Samar', ''], dtype=object)]
|
3,984 |
1408.0656
|
Seungwoo Lee
|
Seungwoo Lee and Juyoung Kim
|
Efficient Confinement of Ultraviolet Light into the Self-Assembled,
Dielectric Colloidal Monolayer on a Flat Aluminum Film
| null | null |
10.7567/APEX.7.112002
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Here we propose the efficient confinement of ultraviolet (UV) light into the
plasmonic-photonic crystal hybrid, which can be practically developed by the
self-assembly of dielectric colloidal nanosphere monolayer onto a flat aluminum
(Al) film. Using a numerical approach, we analyzed modal characteristics of
each different resonant mode at the UV wavelengths including surface plasmon
polariton (SPP) mode and waveguided (WG) mode and tuned these resonant modes
from deep to far UV simply by adjusting the size of dielectric colloidal
nanosphere. The calculated quality-factor (Q-factor) of such plasmonic-photonic
crystal hybrid is at least one order of magnitude higher than that of the
existing Al nanostructures (Al nanoparticles, nanodisks, nanovoids, or
nanogratings) standing on the dielectric substrate. Also, we systematically
studied how the amount of native oxide, which can be generated during the
general process for the deposition of Al, can influence on both the SPP and WG
modes of such plasmonic-photonic crystal hybrid in order to guide strategies
for a realistic experimental fabrication and exploitation of relevant optical
responses. We anticipate that the theoretical results in this paper enable a
promising step in the enhancement of UV light interaction with the nanophotonic
structure in a versatile, but highly efficient way.
|
[{'version': 'v1', 'created': 'Mon, 4 Aug 2014 12:24:36 GMT'}]
|
2015-06-22
|
[array(['Lee', 'Seungwoo', ''], dtype=object)
array(['Kim', 'Juyoung', ''], dtype=object)]
|
3,985 |
gr-qc/0701062
|
Earnest Harrison
|
Earnest Harrison
|
Embedding the Schwarzschild Ideal Fluid Metric
|
5 pages, 9 figures, minor correction
| null | null | null |
gr-qc
| null |
Certain semi-Riemannian metrics can be decomposed into a Riemannian part and
an isochronal part. The properties of such metrics are particularly easy to
visualize in a coordinate-free way, using isometric embedding. We present such
an isochronal, isometric embedding of the well known Schwarzschild ideal fluid
metric in an attempt to see what is happening when the pressure becomes
singular.
|
[{'version': 'v1', 'created': 'Thu, 11 Jan 2007 14:50:31 GMT'}
{'version': 'v2', 'created': 'Sat, 13 Jan 2007 20:50:11 GMT'}]
|
2007-05-23
|
[array(['Harrison', 'Earnest', ''], dtype=object)]
|
3,986 |
1001.1512
|
Johannes Messchendorp J.G.
|
M. Eslami-Kalantari, H.R. Amir-Ahmadi, A. Biegun, I. Ga\v{s}paric, L.
Joulaeizadeh, N. Kalantar-Nayestanaki, St. Kistryn, A. Kozela, H. Mardanpour,
J.G. Messchendorp, H. Moeini, A. Ramazani-Moghaddam-Arani, S.V. Shende, E.
Stephan, R. Sworst
|
Measurements of scattering observables for the $pd$ break-up reaction
|
Proceedings of 19th International IUPAP Conference on Few-Body
Problems in Physics, Bonn University, 31.08 - 05.09.2009, Bonn, GERMANY
| null |
10.1051/epjconf/20100305010
| null |
nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High-precision measurements of the scattering observables such as cross
sections and analyzing powers for the proton-deuteron elastic and break-up
reactions have been performed at KVI in the last two decades and elsewhere to
investigate various aspects of the three-nucleon force (3NF) effects
simultaneously. In 2006 an experiment was performed to study these effects in
$\vec{p}+d$ break-up reaction at 135 MeV with the detection system, Big
Instrument for Nuclear polarization Analysis, BINA. BINA covers almost the
entire kinematical phase space of the break-up reaction. The results are
interpreted with the help of state-of-the-art Faddeev calculations and are
partly presented in this contribution.
|
[{'version': 'v1', 'created': 'Sun, 10 Jan 2010 13:15:33 GMT'}]
|
2015-05-14
|
[array(['Eslami-Kalantari', 'M.', ''], dtype=object)
array(['Amir-Ahmadi', 'H. R.', ''], dtype=object)
array(['Biegun', 'A.', ''], dtype=object)
array(['Gašparic', 'I.', ''], dtype=object)
array(['Joulaeizadeh', 'L.', ''], dtype=object)
array(['Kalantar-Nayestanaki', 'N.', ''], dtype=object)
array(['Kistryn', 'St.', ''], dtype=object)
array(['Kozela', 'A.', ''], dtype=object)
array(['Mardanpour', 'H.', ''], dtype=object)
array(['Messchendorp', 'J. G.', ''], dtype=object)
array(['Moeini', 'H.', ''], dtype=object)
array(['Ramazani-Moghaddam-Arani', 'A.', ''], dtype=object)
array(['Shende', 'S. V.', ''], dtype=object)
array(['Stephan', 'E.', ''], dtype=object)
array(['Sworst', 'R.', ''], dtype=object)]
|
3,987 |
1603.01421
|
Gary Froyland
|
Davor Dragi\v{c}evi\'c and Gary Froyland
|
H\"older continuity of Oseledets splittings for semi-invertible operator
cocycles
|
Minor revisions to match accepted version in ETDS
| null |
10.1017/etds.2016.55
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For H\"older continuous cocycles over an invertible, Lipschitz base, we
establish the H\"older continuity of Oseledets subspaces on compact sets of
arbitrarily large measure. This extends a result of Ara\'{u}jo, Bufetov, and
Filip by considering possibly noninvertible cocycles, which in addition may
take values in the space of compact operators on a Hilbert space. As a
by-product of our work, we also show that a noninvertible cocycle with
nonvanishing Lyapunov exponents exhibits nonuniformly hyperbolic behaviour (in
the sense of Pesin) on a set of full measure.
|
[{'version': 'v1', 'created': 'Fri, 4 Mar 2016 10:57:34 GMT'}
{'version': 'v2', 'created': 'Tue, 12 Jul 2016 15:55:53 GMT'}]
|
2016-09-14
|
[array(['Dragičević', 'Davor', ''], dtype=object)
array(['Froyland', 'Gary', ''], dtype=object)]
|
3,988 |
1810.12143
|
Z Yan
|
Guoqiang Zhang and Zhenya Yan
|
A unified inverse scattering transform and soliton solutions of the
nonlocal modified KdV equation with non-zero boundary conditions
|
21 pages, 4 figures
|
Physica D 402 (2020) 132170
| null | null |
nlin.SI math-ph math.AP math.MP nlin.PS physics.comp-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a rigorous theory of a unified and simple inverse scattering
transform (IST) for both focusing and defocusing real nonlocal
(reverse-space-time) modified Korteweg-de Vries (mKdV) equations with non-zero
boundary conditions (NZBCs) at infinity. The IST problems for the nonlocal
equations with NZBCs are more complicated then ones for the local equations
with NZBCs. The suitable uniformization variable is introduced in order to make
the direct and inverse problems be established on a complex plane instead of a
two-sheeted Riemann surface. The direct scattering problem establishes the
analyticity, symmetries, and asymptotic behaviors of Jost solutions and
scattering matrix, and properties of discrete spectra. The inverse problem is
formulated and solved by means of a matrix-valued Riemann-Hilbert problem. The
reconstruction formula, trace formulae, and theta conditions are obtained.
Finally, the dynamical behaviors of solitons for four different cases for the
reflectionless potentials for both focusing and defocusing nonlocal mKdV
equations with NZBCs are analyzed in detail.
|
[{'version': 'v1', 'created': 'Mon, 29 Oct 2018 14:25:07 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Mar 2019 07:13:59 GMT'}]
|
2020-12-08
|
[array(['Zhang', 'Guoqiang', ''], dtype=object)
array(['Yan', 'Zhenya', ''], dtype=object)]
|
3,989 |
quant-ph/0311183
|
Luis L. Sanchez. Soto
|
A. B. Klimov, J. L. Romero, J. Delgado and L. L. Sanchez-Soto
|
Effective damping in the Raman cooling of trapped ions
|
15 pages, 5 figures. To appear in Optics Communications
|
Opt. Commun. 230, 393-400 (2004)
|
10.1016/j.optcom.2003.11.025
| null |
quant-ph
| null |
We present a method of treating the interaction of a single three-level ion
with two laser beams. The idea is to apply a unitary transformation such that
the exact transformed Hamiltonian has one of the three levels decoupled for all
values of the detunings. When one takes into account damping, the evolution of
the system is governed by a master equation usually obtained via adiabatic
approximation under the assumption of far-detuned lasers. To go around the
drawbacks of this technique, we use the same unitary transformation to get an
effective master equation.
|
[{'version': 'v1', 'created': 'Wed, 26 Nov 2003 16:13:13 GMT'}]
|
2007-05-23
|
[array(['Klimov', 'A. B.', ''], dtype=object)
array(['Romero', 'J. L.', ''], dtype=object)
array(['Delgado', 'J.', ''], dtype=object)
array(['Sanchez-Soto', 'L. L.', ''], dtype=object)]
|
3,990 |
1508.06544
|
Hassan Saadat
|
H. Saadat
|
A cosmological model of the early universe based on ECG with variable
$\Lambda$-term in Lyra geometry
|
14 pages, 5 figures. arXiv admin note: text overlap with
arXiv:1502.01189, arXiv:1410.5858 by other authors
| null |
10.1007/s10773-015-2874-x
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we study interacting extended Chaplygin gas as dark matter and
quintessence scalar field as dark energy with an effective $\Lambda$-term in
Lyra manifold. As we know Chaplygin gas behaves as dark matter at the early
universe while cosmological constant at the late time. Modified field equations
are given and motivation of the phenomenological models discussed in details.
Four different models based on the interaction term are investigated in this
work. Then, we consider other models where Extended Chaplygin gas and
quintessence field play role of dark matter and dark energy respectively with
two different forms of interaction between the extended Chaplygin gas and
quintessence scalar field for both constant and varying $\Lambda$. Concerning
to the mathematical hardness of the problems we discuss results numerically and
graphically. Obtained results give us hope that proposed models can work as
good models for the early universe with later stage of evolution containing
accelerated expansion.
|
[{'version': 'v1', 'created': 'Mon, 24 Aug 2015 12:38:32 GMT'}]
|
2016-01-20
|
[array(['Saadat', 'H.', ''], dtype=object)]
|
3,991 |
1210.5567
|
Yasuki Tachibana
|
Yasuki Tachibana, Tetsufumi Hirano
|
Emission of Low Momentum Particles at Large Angles from Jet
|
4 pages, 2figures, to appear in the proceedings of Quark Matter 2012,
August 13-18, Washington D.C., USA
| null |
10.1016/j.nuclphysa.2013.02.189
| null |
nucl-th hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study dynamics of a QGP fluid induced by energetic partons propagating
through it. We construct a (3+1)-dimensional QGP-fluid+Jet model. When a jet
traverses a uniform fluid, it induces a Mach cone structure of energy density
distribution and a vortex ring surrounding a path of the jet. When a pair of
jets travels through a radially expanding fluid, low momentum particles are
dominantly induced at large angles from the quenched jet. This result is
qualitatively consistent with observation of the CMS Collaboration at LHC.
|
[{'version': 'v1', 'created': 'Sat, 20 Oct 2012 01:10:20 GMT'}]
|
2015-06-11
|
[array(['Tachibana', 'Yasuki', ''], dtype=object)
array(['Hirano', 'Tetsufumi', ''], dtype=object)]
|
3,992 |
1801.03105
|
Diane Cormier
|
D. Cormier, F. Bigiel, M. J. Jim\'enez-Donaire, A. K. Leroy, M.
Gallagher, A. Usero, K. Sandstrom, A. Bolatto, A. Hughes, C. Kramer, M. R.
Krumholz, D. S. Meier, E. J. Murphy, J. Pety, E. Rosolowsky, E. Schinnerer,
A. Schruba, K. Sliwa, and F. Walter
|
Full-disc $^{13}$CO(1-0) mapping across nearby galaxies of the EMPIRE
survey and the CO-to-H$_2$ conversion factor
|
accepted for publication in MNRAS
| null |
10.1093/mnras/sty059
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Carbon monoxide (CO) provides crucial information about the molecular gas
properties of galaxies. While $^{12}$CO has been targeted extensively,
isotopologues such as $^{13}$CO have the advantage of being less optically
thick and observations have recently become accessible across full galaxy
discs. We present a comprehensive new dataset of $^{13}$CO(1-0) observations
with the IRAM 30-m telescope of the full discs of 9 nearby spiral galaxies from
the EMPIRE survey at a spatial resolution of $\sim$1.5kpc. $^{13}$CO(1-0) is
mapped out to $0.7-1r_{25}$ and detected at high signal-to-noise throughout our
maps. We analyse the $^{12}$CO(1-0)-to-$^{13}$CO(1-0) ratio ($\Re$) as a
function of galactocentric radius and other parameters such as the
$^{12}$CO(2-1)-to-$^{12}$CO(1-0) intensity ratio, the 70-to-160$\mu$m flux
density ratio, the star-formation rate surface density, the star-formation
efficiency, and the CO-to-H$_2$ conversion factor. We find that $\Re$ varies by
a factor of 2 at most within and amongst galaxies, with a median value of 11
and larger variations in the galaxy centres than in the discs. We argue that
optical depth effects, most likely due to changes in the mixture of
diffuse/dense gas, are favored explanations for the observed $\Re$ variations,
while abundance changes may also be at play. We calculate a spatially-resolved
$^{13}$CO(1-0)-to-H$_2$ conversion factor and find an average value of
$1.0\times10^{21}$ cm$^{-2}$ (K.km/s)$^{-1}$ over our sample with a standard
deviation of a factor of 2. We find that $^{13}$CO(1-0) does not appear to be a
good predictor of the bulk molecular gas mass in normal galaxy discs due to the
presence of a large diffuse phase, but it may be a better tracer of the mass
than $^{12}$CO(1-0) in the galaxy centres where the fraction of dense gas is
larger.
|
[{'version': 'v1', 'created': 'Tue, 9 Jan 2018 19:01:01 GMT'}]
|
2018-01-24
|
[array(['Cormier', 'D.', ''], dtype=object)
array(['Bigiel', 'F.', ''], dtype=object)
array(['Jiménez-Donaire', 'M. J.', ''], dtype=object)
array(['Leroy', 'A. K.', ''], dtype=object)
array(['Gallagher', 'M.', ''], dtype=object)
array(['Usero', 'A.', ''], dtype=object)
array(['Sandstrom', 'K.', ''], dtype=object)
array(['Bolatto', 'A.', ''], dtype=object)
array(['Hughes', 'A.', ''], dtype=object)
array(['Kramer', 'C.', ''], dtype=object)
array(['Krumholz', 'M. R.', ''], dtype=object)
array(['Meier', 'D. S.', ''], dtype=object)
array(['Murphy', 'E. J.', ''], dtype=object)
array(['Pety', 'J.', ''], dtype=object)
array(['Rosolowsky', 'E.', ''], dtype=object)
array(['Schinnerer', 'E.', ''], dtype=object)
array(['Schruba', 'A.', ''], dtype=object)
array(['Sliwa', 'K.', ''], dtype=object)
array(['Walter', 'F.', ''], dtype=object)]
|
3,993 |
1612.07491
|
Irit Dinur
|
Amey Bhangale, Irit Dinur, Inbal Livni Navon
|
Cube vs. Cube Low Degree Test
| null | null | null | null |
cs.CC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We revisit the Raz-Safra plane-vs.-plane test and study the closely related
cube vs. cube test. In this test the tester has access to a "cubes table" which
assigns to every cube a low degree polynomial. The tester randomly selects two
cubes (affine sub-spaces of dimension $3$) that intersect on a point $x\in
\mathbf{F}^m$, and checks that the assignments to the cubes agree with each
other on the point $x$.
Our main result is a new combinatorial proof for a low degree test that comes
closer to the soundness limit, as it works for all $\epsilon \ge
poly(d)/{\mathbf{F}}^{1/2}$, where $d$ is the degree. This should be compared
to the previously best soundness value of $\epsilon \ge poly(m,
d)/\mathbf{F}^{1/8}$. Our soundness limit improves upon the dependence on the
field size and does not depend on the dimension of the ambient space.
Our proof is combinatorial and direct: unlike the Raz-Safra proof, it
proceeds in one shot and does not require induction on the dimension of the
ambient space. The ideas in our proof come from works on direct product testing
which are even simpler in the current setting thanks to the low degree.
Along the way we also prove a somewhat surprising fact about connection
between different agreement tests: it does not matter if the tester chooses the
cubes to intersect on points or on lines: for every given table, its success
probability in either test is nearly the same.
|
[{'version': 'v1', 'created': 'Thu, 22 Dec 2016 08:54:49 GMT'}]
|
2016-12-23
|
[array(['Bhangale', 'Amey', ''], dtype=object)
array(['Dinur', 'Irit', ''], dtype=object)
array(['Navon', 'Inbal Livni', ''], dtype=object)]
|
3,994 |
hep-ph/0509138
|
Gregory Soyez
|
G. Soyez
|
Fluctuation effects in high-energy QCD
|
4 pages, 4 figures. Talk presented at the XIth International
Conference on Elastic and Diffractive Scattering (EDS05), Blois, France, May
15-20 2005
| null | null | null |
hep-ph
| null |
The recent high-energy QCD equations including the effects of fluctuations
are solved numerically. We discuss their asymptotic properties and compare them
with the corresponding behaviour without fluctuations as well as with the
statistical-physics model obtained in the saddle point approximation. The
potential consequences on phenomenology, particularly on geometric scaling
violations, are drawn.
|
[{'version': 'v1', 'created': 'Wed, 14 Sep 2005 00:33:46 GMT'}]
|
2007-05-23
|
[array(['Soyez', 'G.', ''], dtype=object)]
|
3,995 |
2005.10734
|
Mohammed Belkhatir
|
Noureddine Belkhatir, Jacky Estublier, Walcelio Melo
|
THE ADELE-TEMPO experience : an environment to support process modeling
and enaction
| null | null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Process-Centered Software Engineering Environments (PSEE) have recently
attracted a large number of researchers. In such environments the software
processes are explicitly described and interpreted by the PSEE, allowing
software activities to be automated, assisted, and enforced. Lehman and Belady
(1985) & Osterweil (1987) claim that this capability is a central element in a
software development environment for the improvement of software product
quality and software developers productivity. We have addressed these problems
in the framework of the Adele project. The Adele kernel, initially a
configuration management system has been extended with respect to 1) modeling
and support of complex product models: the Object Manager 2) modeling and
support of software processes: the Activity Manager and 3) modeling and support
of software product evolution: the Configuration Manager. For data and product
modelling, an ER/OO model has been implemented including SEE specific features;
On top of Adele kernel, which is a commercial product, we developed a Process
Manager research prototype, Tempo, an enactable formalism based on two major
concepts: objects may have a different description (role) depending on the
process in which they are used, and processes are synchronized and coordinated
by explicit connections. ADL-Tempo is organized around the concepts of software
product, Work Environment and software process.
|
[{'version': 'v1', 'created': 'Thu, 21 May 2020 15:43:42 GMT'}]
|
2020-05-22
|
[array(['Belkhatir', 'Noureddine', ''], dtype=object)
array(['Estublier', 'Jacky', ''], dtype=object)
array(['Melo', 'Walcelio', ''], dtype=object)]
|
3,996 |
2102.07892
|
Arash Ghaani Farashahi
|
Arash Ghaani Farashahi
|
Covariant Functions of Characters of Compact Subgroups
| null | null | null | null |
math.FA
|
http://creativecommons.org/licenses/by/4.0/
|
This paper presents a systematic study for abstract harmonic analysis on
classical Banach spaces of covariant functions of characters of compact
subgroups. Let $G$ be a locally compact group and $H$ be a compact subgroup of
$G$. Suppose that $\xi:H\to\mathbb{T}$ is a continuous character, $1\le
p<\infty$ and $L_\xi^p(G,H)$ is the set of all covariant functions of $\xi$ in
$L^p(G)$. It is shown that $L^p_\xi(G,H)$ is isometrically isomorphic to a
quotient space of $L^p(G)$. It is also proven that $L^q_\xi(G,H)$ is
isometrically isomorphic to the dual space $L^p_\xi(G,H)^*$, where $q$ is the
conjugate exponent of $p$. The paper is concluded by some results for the case
that $G$ is compact.
|
[{'version': 'v1', 'created': 'Mon, 15 Feb 2021 23:15:48 GMT'}]
|
2021-02-17
|
[array(['Farashahi', 'Arash Ghaani', ''], dtype=object)]
|
3,997 |
1405.2596
|
Mohammad Soltani
|
Mohammad Soltani, Pavol Bokes, Zachary Fox, Abhyudai Singh
|
Nonspecific transcription factor binding reduces variability in
transcription factor and target protein expression
|
10 pages, 5 figures, Physical Biology
| null | null | null |
q-bio.SC q-bio.MN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Transcription factors (TFs) interact with a multitude of binding sites on DNA
and partner proteins inside cells. We investigate how nonspecific
binding/unbinding to such decoy binding sites affects the magnitude and
time-scale of random fluctuations in TF copy numbers arising from stochastic
gene expression. A stochastic model of TF gene expression, together with decoy
site interactions is formulated. Distributions for the total (bound and
unbound) and free (unbound) TF levels are derived by analytically solving the
chemical master equation under physiologically relevant assumptions. Our
results show that increasing the number of decoy binding sides considerably
reduces stochasticity in free TF copy numbers. The TF autocorrelation function
reveals that decoy sites can either enhance or shorten the time-scale of TF
fluctuations depending on model parameters. To understand how noise in TF
abundances propagates downstream, a TF target gene is included in the model.
Intriguingly, we find that noise in the expression of the target gene decreases
with increasing decoy sites for linear TF-target protein dose-responses, even
in regimes where decoy sites enhance TF autocorrelation times. Moreover,
counterintuitive noise transmissions arise for nonlinear dose-responses. In
summary, our study highlights the critical role of molecular sequestration by
decoy binding sites in regulating the stochastic dynamics of TFs and target
proteins at the single-cell level.
|
[{'version': 'v1', 'created': 'Sun, 11 May 2014 22:48:34 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Apr 2015 19:07:27 GMT'}]
|
2015-04-15
|
[array(['Soltani', 'Mohammad', ''], dtype=object)
array(['Bokes', 'Pavol', ''], dtype=object)
array(['Fox', 'Zachary', ''], dtype=object)
array(['Singh', 'Abhyudai', ''], dtype=object)]
|
3,998 |
1403.5245
|
Alexander Kemper
|
A.F. Kemper, M.A. Sentef, B. Moritz, J.K. Freericks and T.P. Devereaux
|
Effect of dynamical spectral weight redistribution on effective
interactions in time-resolved spectroscopy
|
5 pages, 4 figures. SI contained in sources
|
Phys. Rev. B 90, 075126 (2014)
|
10.1103/PhysRevB.90.075126
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The redistribution of electrons in an ultrafast pump-probe experiment causes
significant changes to the effective interaction between electrons and bosonic
modes. We study the influence of these changes on pump-probe photoemission
spectroscopy for a model electron-phonon coupled system using the
nonequilibrium Keldysh formalism. We show that spectral rearrangement due to
the driving field preserves an overall sum rule for the electronic self-energy,
but modifies the effective electron-phonon scattering as a function of energy.
Experimentally, this pump-modified scattering can be tracked by analyzing the
fluence or excitation energy dependence of population decay rates and transient
changes in dispersion kinks.
|
[{'version': 'v1', 'created': 'Thu, 20 Mar 2014 19:37:35 GMT'}
{'version': 'v2', 'created': 'Fri, 21 Mar 2014 18:53:42 GMT'}
{'version': 'v3', 'created': 'Thu, 21 Aug 2014 21:11:39 GMT'}]
|
2014-08-25
|
[array(['Kemper', 'A. F.', ''], dtype=object)
array(['Sentef', 'M. A.', ''], dtype=object)
array(['Moritz', 'B.', ''], dtype=object)
array(['Freericks', 'J. K.', ''], dtype=object)
array(['Devereaux', 'T. P.', ''], dtype=object)]
|
3,999 |
gr-qc/0508100
|
Daniel Sudarsky
|
Alejandro Perez, Hanno Sahlmann, and Daniel Sudarsky
|
On the quantum origin of the seeds of cosmic structure
|
replacement with final version to appear in Classical and Quantum
Gravity
|
Class.Quant.Grav. 23 (2006) 2317-2354
|
10.1088/0264-9381/23/7/008
| null |
gr-qc astro-ph hep-th quant-ph
| null |
The current understanding of the quantum origin of cosmic structure is
discussed critically. We point out that in the existing treatments a transition
from a symmetric quantum state to an (essentially classical) non-symmetric
state is implicitly assumed, but not specified or analyzed in any detail. In
facing the issue we are led to conclude that new physics is required to explain
the apparent predictive power of the usual schemes. Furthermore we show that
the novel way of looking at the relevant issues opens new windows from where
relevant information might be extracted regarding cosmological issues and
perhaps even clues about aspects of quantum gravity.
|
[{'version': 'v1', 'created': 'Wed, 24 Aug 2005 13:54:34 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Aug 2005 00:15:43 GMT'}
{'version': 'v3', 'created': 'Sat, 25 Feb 2006 19:55:57 GMT'}]
|
2015-06-25
|
[array(['Perez', 'Alejandro', ''], dtype=object)
array(['Sahlmann', 'Hanno', ''], dtype=object)
array(['Sudarsky', 'Daniel', ''], dtype=object)]
|
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