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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17,900 |
1708.06704
|
Ezequiel Alvarez
|
Thomas Pedro Eggarter
|
Unemployment: Study of Causes and Possible Solutions
|
T.P.Eggarter (physicist) passed away in August 1997. This work was
done during his last months of life and only locally published up to now.
Work is in Spanish and could be translated upon request. Please contact E.
Alvarez [email protected]
| null | null | null |
q-fin.EC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The following measures against unemployment are proposed: In the short term,
to promote greater income for the poorest sectors. It is shown that this can be
paid with the resulting increased production, without losing income to the
other economic agents. In the mid term, the creation of ad-hoc companies for
investment in projects profitable but long lasting. And in the long run, the
abandonment of the competitive models. As these proposals go against current
ideas (liberalisation, labour market flexibility, free market, etc.), the
statements are rigorously demonstrated, even at the risk of making the lecture
harder.
Part 1 explores the problem and uses a simple model and others heuristic
arguments to create familiarity with macroeconomic models. Part 2 is a
simplified summary of Macroeconomic Theory textbook. It serves as a review to
the reader whose knowledge in economy are out of date, or as a first
approximation to the topic if he or she does not have them. In the light of the
theory, economic policies are evaluated for the Argentine case in the 90's. The
work accepts the Keynesian explanation of unemployment (insufficient demand),
but we disagree on its solution (public expenditure). Finally, in Part 3 we
elaborate and justify the proposals.
|
[{'version': 'v1', 'created': 'Mon, 21 Aug 2017 03:09:56 GMT'}]
|
2017-08-23
|
[array(['Eggarter', 'Thomas Pedro', ''], dtype=object)]
|
17,901 |
1503.03235
|
Paolo Sessi
|
Thomas Bathon, Paolo Sessi, Konstantin Kokh, Oleg Tereshchenko,
Matthias Bode
|
Systematics of molecular self-assembled networks at topological
insulators surfaces
|
Nano Letters (2015)
| null |
10.1021/nl5048434
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The success of topological insulators (TI) in creating devices with unique
functionalities is directly connected to the ability of coupling their helical
spin states to well defined perturbations. However, up to now, TI-based
heterostructures always resulted in very disordered interfaces, characterized
by strong mesoscopic fluctuations of the chemical potential which make the
spin-momentum locking ill-defined over length scales of few nanometers or even
completely destroy topological states. These limitations call for the ability
to control topological interfaces with atomic precision. Here, we demonstrate
that molecular self-assembly processes driven by inherent interactions among
the constituents offer the opportunity to create well-defined networks at TIs
surfaces. Even more remarkably, we show that the symmetry of the overlayer can
be finely controlled by appropriate chemical modifications. By analyzing the
influence of the molecules on the TI electronic properties, we rationalize our
results in terms of the charge redistribution taking place at the interface.
Overall, our approach offers a precise and fast way to produce tailor-made
nanoscale surface landscapes. In particular, our findings make organic
materials ideal TIs counterparts, since they offer the possibility to
chemically tune both electronic and magnetic properties within the same family
of molecules, thereby bringing us a significant step closer towards an
application of this fascinating class of materials.
|
[{'version': 'v1', 'created': 'Wed, 11 Mar 2015 09:33:54 GMT'}]
|
2015-03-12
|
[array(['Bathon', 'Thomas', ''], dtype=object)
array(['Sessi', 'Paolo', ''], dtype=object)
array(['Kokh', 'Konstantin', ''], dtype=object)
array(['Tereshchenko', 'Oleg', ''], dtype=object)
array(['Bode', 'Matthias', ''], dtype=object)]
|
17,902 |
2207.02589
|
Lyes Saad Saoud Dr
|
Lyes Saad Saoud, Hasan AlMarzouqi, Ramy Hussein
|
Cascaded Deep Hybrid Models for Multistep Household Energy Consumption
Forecasting
|
Under consideration at Pattern Recognition Letters
| null | null | null |
cs.LG eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sustainability requires increased energy efficiency with minimal waste. The
future power systems should thus provide high levels of flexibility iin
controling energy consumption. Precise projections of future energy demand/load
at the aggregate and on the individual site levels are of great importance for
decision makers and professionals in the energy industry. Forecasting energy
loads has become more advantageous for energy providers and customers, allowing
them to establish an efficient production strategy to satisfy demand. This
study introduces two hybrid cascaded models for forecasting multistep household
power consumption in different resolutions. The first model integrates
Stationary Wavelet Transform (SWT), as an efficient signal preprocessing
technique, with Convolutional Neural Networks and Long Short Term Memory
(LSTM). The second hybrid model combines SWT with a self-attention based neural
network architecture named transformer. The major constraint of using
time-frequency analysis methods such as SWT in multistep energy forecasting
problems is that they require sequential signals, making signal reconstruction
problematic in multistep forecasting applications.The cascaded models can
efficiently address this problem through using the recursive outputs.
Experimental results show that the proposed hybrid models achieve superior
prediction performance compared to the existing multistep power consumption
prediction methods. The results will pave the way for more accurate and
reliable forecasting of household power consumption.
|
[{'version': 'v1', 'created': 'Wed, 6 Jul 2022 11:02:23 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Oct 2022 17:54:39 GMT'}]
|
2022-10-14
|
[array(['Saoud', 'Lyes Saad', ''], dtype=object)
array(['AlMarzouqi', 'Hasan', ''], dtype=object)
array(['Hussein', 'Ramy', ''], dtype=object)]
|
17,903 |
0906.3805
|
Anna Skachkova
|
A.Bartl, W.Majerotto, K.Moenig, A.N.Skachkova, N.B.Skachkov
|
On pair production of scalar top quarks in e+e- collisions at ILC and a
possibility of their mass reconstruction
|
12 pages, 8 figures, Presented at XIX-th International Baldin Seminar
on High Energy Physics Problems, XIX-th ISHEPP (JINR, Dubna, Russia,
September 29 - October 4, 2008)
|
Phys.Part.Nucl.Lett.6:181-189,2009
|
10.1134/S1547477109030017
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study pair production of scalar top quarks in e+e- collisions with the
subsequent decay of the top squarks into b-quarks and charginos. We simulate
this process by using PYTHIA6.4 for the beam energy 2Ebeam = 350, 400, 500,
800, 1000 GeV. A set of criteria for physical variables is proposed, which
provides good separation of stop signal events from top quark pair production
being the main background. These criteria allow us to reconstruct the mass of
the top squark with an integrared luminosity of 1000 1/fb provided that the
neutralino mass is known.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2009 14:13:31 GMT'}]
|
2009-09-24
|
[array(['Bartl', 'A.', ''], dtype=object)
array(['Majerotto', 'W.', ''], dtype=object)
array(['Moenig', 'K.', ''], dtype=object)
array(['Skachkova', 'A. N.', ''], dtype=object)
array(['Skachkov', 'N. B.', ''], dtype=object)]
|
17,904 |
2012.09281
|
Xabier Marcano
|
Matteo Agostini, Elisabetta Bossio, Alejandro Ibarra, Xabier Marcano
|
Search for Light Exotic Fermions in Double-Beta Decays
|
9 pages, 3 figures. Matches published version
|
Physics Letters B 815 (2021) 136127
|
10.1016/j.physletb.2021.136127
|
TUM-HEP 1306/20
|
hep-ph hep-ex nucl-ex
|
http://creativecommons.org/licenses/by/4.0/
|
The Standard Model of Particle Physics predicts the double-$\beta$ decay of
certain nuclei with the emission of two active neutrinos. In this letter, we
argue that double-$\beta$ decay experiments could be used to probe models with
light exotic fermions through the search for spectral distortions in the
electron spectrum with respect to the Standard Model expectations. We consider
two concrete examples: models with light sterile neutrinos, singly produced in
the double-$\beta$ decay, and models with a light $Z_2$-odd fermion, pair
produced due to a $Z_2$ symmetry. We estimate the discovery potential of a
selection of double-$\beta$ decay experiments and find that future searches
will test for the first time a new part of the parameter space of interest at
the MeV-mass scale.
|
[{'version': 'v1', 'created': 'Wed, 16 Dec 2020 21:42:02 GMT'}
{'version': 'v2', 'created': 'Wed, 10 Feb 2021 18:48:57 GMT'}]
|
2021-02-11
|
[array(['Agostini', 'Matteo', ''], dtype=object)
array(['Bossio', 'Elisabetta', ''], dtype=object)
array(['Ibarra', 'Alejandro', ''], dtype=object)
array(['Marcano', 'Xabier', ''], dtype=object)]
|
17,905 |
0801.4287
|
Uwe Aickelin
|
Qi Chen and Uwe Aickelin
|
Movie Recommendation Systems Using An Artificial Immune System
| null |
6th International Conference in Adaptive Computing in Design and
Manufacture (ACDM 2004), Bristol, UK, 2004
| null | null |
cs.NE cs.AI
| null |
We apply the Artificial Immune System (AIS) technology to the Collaborative
Filtering (CF) technology when we build the movie recommendation system. Two
different affinity measure algorithms of AIS, Kendall tau and Weighted Kappa,
are used to calculate the correlation coefficients for this movie
recommendation system. From the testing we think that Weighted Kappa is more
suitable than Kendall tau for movie problems.
|
[{'version': 'v1', 'created': 'Mon, 28 Jan 2008 14:19:12 GMT'}
{'version': 'v2', 'created': 'Mon, 3 Mar 2008 17:05:58 GMT'}]
|
2010-07-05
|
[array(['Chen', 'Qi', ''], dtype=object)
array(['Aickelin', 'Uwe', ''], dtype=object)]
|
17,906 |
0708.0119
|
Javier Virto
|
Rafel Escribano, Joaquim Matias, Javier Virto (Barcelona, IFAE)
|
Sum rules for B-->pi eta('), K eta('), eta(') eta(') decays
|
18 pages, 4 figures. Version published in PLB
|
Phys.Lett.B659:870-877,2008
|
10.1016/j.physletb.2007.12.023
|
UAB-FT-634
|
hep-ph
| null |
We provide a set of sum rules, using flavour symmetries, relating CP-averaged
ratios and CP asymmetries of different neutral and charged B mesons decaying
into an eta(') particle together with a pion, a kaon or a second eta('). These
sume rules allow us to give a prediction for the B^0-->K^0 eta branching ratio.
We also predict a clear sign anti-correlation between the two B^0-->pi^0
(eta,eta') CP-asymmetries, and find a combined constraint on the branching
ratios and CP-asymmetries of the three B-->eta(')eta(') decay modes.
|
[{'version': 'v1', 'created': 'Wed, 1 Aug 2007 10:47:25 GMT'}
{'version': 'v2', 'created': 'Tue, 22 Jan 2008 11:25:56 GMT'}]
|
2008-11-26
|
[array(['Escribano', 'Rafel', '', 'Barcelona, IFAE'], dtype=object)
array(['Matias', 'Joaquim', '', 'Barcelona, IFAE'], dtype=object)
array(['Virto', 'Javier', '', 'Barcelona, IFAE'], dtype=object)]
|
17,907 |
1910.07710
|
Qing Xi
|
Lan Dong, Qing Xi, Jun Zhou, Xiangfan Xu, and Baowen Li
|
Phonon renormalization induced by electric field in ferroelectric
P(VDF-TrFE) nanofibers
| null |
Phys. Rev. Applied 13, 034019 (2020)
|
10.1103/PhysRevApplied.13.034019
| null |
cond-mat.mtrl-sci cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report phonon renormalization induced by an external electric field E in
ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)]
nanofibers through measuring the E-dependent thermal conductivity. Our
experimental results are in excellent agreement with the theoretical ones
derived from the lattice dynamics. The renormalization is attributed to the
anharmonicity that modifies the phonon spectrum when the atoms are pulled away
from their equilibrium positions by the electric field. Our finding provides an
efficient way to manipulate the thermal conductivity by tuning external fields
in ferroelectric materials.
|
[{'version': 'v1', 'created': 'Thu, 17 Oct 2019 05:09:13 GMT'}]
|
2020-03-10
|
[array(['Dong', 'Lan', ''], dtype=object)
array(['Xi', 'Qing', ''], dtype=object)
array(['Zhou', 'Jun', ''], dtype=object)
array(['Xu', 'Xiangfan', ''], dtype=object)
array(['Li', 'Baowen', ''], dtype=object)]
|
17,908 |
1702.07539
|
Alon Cohen
|
Alon Cohen, Tamir Hazan, Tomer Koren
|
Tight Bounds for Bandit Combinatorial Optimization
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We revisit the study of optimal regret rates in bandit combinatorial
optimization---a fundamental framework for sequential decision making under
uncertainty that abstracts numerous combinatorial prediction problems. We prove
that the attainable regret in this setting grows as
$\widetilde{\Theta}(k^{3/2}\sqrt{dT})$ where $d$ is the dimension of the
problem and $k$ is a bound over the maximal instantaneous loss, disproving a
conjecture of Audibert, Bubeck, and Lugosi (2013) who argued that the optimal
rate should be of the form $\widetilde{\Theta}(k\sqrt{dT})$. Our bounds apply
to several important instances of the framework, and in particular, imply a
tight bound for the well-studied bandit shortest path problem. By that, we also
resolve an open problem posed by Cesa-Bianchi and Lugosi (2012).
|
[{'version': 'v1', 'created': 'Fri, 24 Feb 2017 11:17:33 GMT'}]
|
2017-02-27
|
[array(['Cohen', 'Alon', ''], dtype=object)
array(['Hazan', 'Tamir', ''], dtype=object)
array(['Koren', 'Tomer', ''], dtype=object)]
|
17,909 |
1812.00578
|
David Vasak
|
David Vasak, Johannes Kirsch, Dirk Kehm, Juergen Struckmeier
|
Covariant Canonical Gauge Gravitation and Cosmology
| null | null |
10.1088/1742-6596/1194/1/012108
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The covariant canonical transformation theory applied to the relativistic
Hamiltonian theory of classical matter fields in dynamical space-time yields a
novel (first order) gauge field theory of gravitation. The emerging field
equations necessarily embrace a quadratic Riemann term added to Einstein's
linear equation. The quadratic term endows space-time with inertia generating a
dynamic response of the space-time geometry to deformations relative to (Anti)
de Sitter geometry. A "deformation parameter" is identified, the inverse
dimensionless coupling constant governing the relative strength of the
quadratic invariant in the Hamiltonian, and directly observable via the
deceleration parameter $q_0$. The quadratic invariant makes the system
inconsistent with Einstein's constant cosmological term, $\Lambda =
\mathrm{const}$. In the Friedman model this inconsistency is resolved with the
scaling ansatz of a "cosmological function", $\Lambda(a)$, where $a$ is the
scale parameter of the FLRW metric. %Moreover, the strain generated by the
quadratic term turns out to act as a geometrical stress. The cosmological
function can be normalized such that with the $\Lambda$ CDM parameter set the
present-day observables, the Hubble constant and the deceleration parameter,
can be reproduced. %We analyze the asymptotics of the such normalized Friedman
equations with respect to both, the fundamental parameters (coupling constants)
and the scale $a$. With this parameter set we recover the dark energy scenario
in the late epoch. The proof that inflation in the early phase is caused by the
"geometrical fluid" representing the inertia of space-time is yet pending,
though.
|
[{'version': 'v1', 'created': 'Mon, 3 Dec 2018 07:10:26 GMT'}]
|
2019-05-22
|
[array(['Vasak', 'David', ''], dtype=object)
array(['Kirsch', 'Johannes', ''], dtype=object)
array(['Kehm', 'Dirk', ''], dtype=object)
array(['Struckmeier', 'Juergen', ''], dtype=object)]
|
17,910 |
2305.03816
|
Marcelo Flamarion
|
Marcelo V. Flamarion and Efim Pelinovsky
|
Interactions of solitons with an external force field: Exploring the
Schamel equation framework
| null | null | null | null |
physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This study aims to investigate the interactions of solitons with an external
force within the framework of the Schamel equation, both asymptotically and
numerically. By utilizing asymptotic expansions, we demonstrate that the
soliton interaction can be approximated by a dynamical system that involves the
soliton amplitude and its crest position. To solve the Schamel equation, we
employ a pseudospectral method and compare the obtained results with those
predicted by the asymptotic theory. Remarkably, our findings reveal a
qualitatively agreement between the predictions and the numerical simulations
at early times. Specifically, we classify the soliton interaction into three
categories: (i) steady interaction occurs when the crest of the soliton and the
crest of the external force are in phase, (ii) oscillatory behavior arises when
the soliton's speed and the external force speed are close to resonance,
causing the soliton to bounce back and forth near its initial position, and
(iii) non-reversible motion occurs when the soliton moves away from its initial
position without changing its direction.
|
[{'version': 'v1', 'created': 'Fri, 5 May 2023 19:43:28 GMT'}
{'version': 'v2', 'created': 'Tue, 9 May 2023 01:00:27 GMT'}]
|
2023-05-10
|
[array(['Flamarion', 'Marcelo V.', ''], dtype=object)
array(['Pelinovsky', 'Efim', ''], dtype=object)]
|
17,911 |
2206.12040
|
Kentaro Mitsui
|
Kentaro Mitsui, Tianyu Zhao, Kei Sawada, Yukiya Hono, Yoshihiko
Nankaku, Keiichi Tokuda
|
End-to-End Text-to-Speech Based on Latent Representation of Speaking
Styles Using Spontaneous Dialogue
|
5 pages, 3 figures, accepted for INTERSPEECH 2022. Audio samples:
https://rinnakk.github.io/research/publications/DialogueTTS/
| null | null | null |
eess.AS cs.CL cs.LG cs.SD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The recent text-to-speech (TTS) has achieved quality comparable to that of
humans; however, its application in spoken dialogue has not been widely
studied. This study aims to realize a TTS that closely resembles human
dialogue. First, we record and transcribe actual spontaneous dialogues. Then,
the proposed dialogue TTS is trained in two stages: first stage, variational
autoencoder (VAE)-VITS or Gaussian mixture variational autoencoder (GMVAE)-VITS
is trained, which introduces an utterance-level latent variable into
variational inference with adversarial learning for end-to-end text-to-speech
(VITS), a recently proposed end-to-end TTS model. A style encoder that extracts
a latent speaking style representation from speech is trained jointly with TTS.
In the second stage, a style predictor is trained to predict the speaking style
to be synthesized from dialogue history. During inference, by passing the
speaking style representation predicted by the style predictor to
VAE/GMVAE-VITS, speech can be synthesized in a style appropriate to the context
of the dialogue. Subjective evaluation results demonstrate that the proposed
method outperforms the original VITS in terms of dialogue-level naturalness.
|
[{'version': 'v1', 'created': 'Fri, 24 Jun 2022 02:32:12 GMT'}]
|
2022-06-27
|
[array(['Mitsui', 'Kentaro', ''], dtype=object)
array(['Zhao', 'Tianyu', ''], dtype=object)
array(['Sawada', 'Kei', ''], dtype=object)
array(['Hono', 'Yukiya', ''], dtype=object)
array(['Nankaku', 'Yoshihiko', ''], dtype=object)
array(['Tokuda', 'Keiichi', ''], dtype=object)]
|
17,912 |
2009.05164
|
Siyi Zhang
|
Siyi Zhang
|
Conformally invariant rigidity theorems on four-manifolds with boundary
|
23 pages
| null | null | null |
math.DG math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the article we introduce new conformal and smooth invariants on compact,
oriented four-manifolds with boundary. In the first part, we show that
"positivity" conditions on these invariants will impose topological
restrictions on underlying manifolds with boundary, which generalizes the
results on closed four-manifolds by M. Gursky and on conformally compact
Einstein four-manifolds by S.-Y. A. Chang, J. Qing, and P. Yang. In the second
part, we study Weyl functional on four-manifolds with boundary and establish
several conformally invariant rigidity theorems. As applications, we prove some
rigidity theorems for conformally compact Einstein four-manifolds. These
results generalize the work on closed four-manifolds by S.-Y. A. Chang, J.
Qing, and P. Yang and rigidity theorem for conformally compact Einstein
four-manifolds by G. Li, J. Qing, and Y. Shi. A crucial idea of the proofs is
to understand the expansion of a smooth Riemannian metric near the boundary. It
is noteworthy to point out that we rule out some examples arising from the
study of closed manifolds in the setting of manifolds with umbilic boundary.
|
[{'version': 'v1', 'created': 'Thu, 10 Sep 2020 22:33:29 GMT'}]
|
2020-09-14
|
[array(['Zhang', 'Siyi', ''], dtype=object)]
|
17,913 |
1507.08380
|
Sarah Eftekharzadeh
|
Sarah Eftekharzadeh, Adam D. Myers, Martin White, David H. Weinberg,
Donald P. Schneider, Yue Shen, Andreu Font-Ribera, Nicholas P. Ross, Isabelle
Paris, Alina Streblyanska
|
Clustering of intermediate redshift quasars using the final SDSS
III-BOSS sample
|
21 pages, 18 figures, accepted for publication in MNRAS
| null |
10.1093/mnras/stv1763
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We measure the two-point clustering of spectroscopically confirmed quasars
from the final sample of the Baryon Oscillation Spectroscopic Survey (BOSS) on
comoving scales of 4 < s < 22 Mpc/h. The sample covers 6950 deg^2 (~ 19
(Gpc/h)^3) and, over the redshift range 2.2 < z < 2.8, contains 55,826
homogeneously selected quasars, which is twice as many as in any similar work.
We deduce b_Q = 3.54 +/- 0.10 ; the most precise measurement of quasar bias to
date at these redshifts. This corresponds to a host halo mass of ~ 2 x 10^12 ~
M_sun/h with an implied quasar duty cycle of ~1 percent. The real-space
projected correlation function is well-fit by a power law of index -2 and
correlation length r0 = (8.12 +/- 0.22), Mpc/h over scales of 4 < rp < 25 ~
Mpc/h. To better study the evolution of quasar clustering at moderate redshift,
we extend the redshift range of our study to z ~ 3.4 and measure the bias and
correlation length of three subsamples over 2.2 < z < 3.4. We find no
significant evolution of r0 or bias over this range, implying that the host
halo mass of quasars decreases somewhat with increasing redshift. We find
quasar clustering remains similar over a decade in luminosity, contradicting a
scenario in which quasar luminosity is monotonically related to halo mass at z
~ 2.5. Our results are broadly consistent with previous BOSS measurements, but
they yield more precise constraints based upon a larger and more uniform data
set.
|
[{'version': 'v1', 'created': 'Thu, 30 Jul 2015 05:19:46 GMT'}]
|
2015-09-16
|
[array(['Eftekharzadeh', 'Sarah', ''], dtype=object)
array(['Myers', 'Adam D.', ''], dtype=object)
array(['White', 'Martin', ''], dtype=object)
array(['Weinberg', 'David H.', ''], dtype=object)
array(['Schneider', 'Donald P.', ''], dtype=object)
array(['Shen', 'Yue', ''], dtype=object)
array(['Font-Ribera', 'Andreu', ''], dtype=object)
array(['Ross', 'Nicholas P.', ''], dtype=object)
array(['Paris', 'Isabelle', ''], dtype=object)
array(['Streblyanska', 'Alina', ''], dtype=object)]
|
17,914 |
2006.01901
|
Katsumasa Tanaka
|
Katsumasa Tanaka, Olivier Boucher, Philippe Ciais, Daniel J. A.
Johansson, Johannes Morfeldt
|
Cost-effective implementation of the Paris Agreement using flexible
greenhouse gas metrics
|
This is an initial version submitted for a journal peer-review
|
Sci. Adv. 7, eabf9020 (2021)
|
10.1126/sciadv.abf9020
| null |
physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Greenhouse gas (GHG) metrics, that is, conversion factors to evaluate the
emissions of non-CO2 climate forcers on a common scale with CO2, serve crucial
functions upon the implementation of the Paris Agreement. While different
metrics have been proposed, their economic cost-effectiveness has not been
investigated under a range of pathways, including those temporarily missing or
significantly overshooting the temperature targets of the Paris Agreement. Here
we show that cost-effective metrics for methane that minimize the overall cost
of climate mitigation are time-dependent, primarily determined by the pathway,
and strongly influenced by temperature overshoot. The Paris Agreement will
implement the conventional 100-year Global Warming Potential (GWP100), a good
approximation of cost-effective metrics for the coming decades. In the longer
term, however, we suggest that parties consider adapting the choice of common
metrics to the future pathway as it unfolds, as part of the global stocktake,
if cost-effectiveness is a key consideration.
|
[{'version': 'v1', 'created': 'Tue, 2 Jun 2020 19:35:59 GMT'}
{'version': 'v2', 'created': 'Thu, 26 Nov 2020 20:34:22 GMT'}
{'version': 'v3', 'created': 'Fri, 19 Mar 2021 18:46:08 GMT'}
{'version': 'v4', 'created': 'Tue, 23 Mar 2021 23:03:12 GMT'}
{'version': 'v5', 'created': 'Thu, 8 Apr 2021 18:57:27 GMT'}]
|
2021-06-04
|
[array(['Tanaka', 'Katsumasa', ''], dtype=object)
array(['Boucher', 'Olivier', ''], dtype=object)
array(['Ciais', 'Philippe', ''], dtype=object)
array(['Johansson', 'Daniel J. A.', ''], dtype=object)
array(['Morfeldt', 'Johannes', ''], dtype=object)]
|
17,915 |
2209.02420
|
Martin Ruskov
|
Martin Ruskov, Paul Ekblom, M. Angela Sasse
|
Getting Users Smart Quick about Security: Results from 90 Minutes of
Using a Persuasive Toolkit for Facilitating Information Security Problem
Solving by Non-Professionals
| null | null | null | null |
cs.CY cs.CR cs.HC
|
http://creativecommons.org/licenses/by/4.0/
|
There is a conflict between the need for security compliance by users and the
fact that commonly they cannot afford to dedicate much of their time and energy
to that security. A balanced level of user engagement in security is difficult
to achieve due to difference of priorities between the business perspective and
the security perspective. We sought to find a way to engage users minimally,
yet efficiently, so that they would both improve their security awareness and
provide necessary feedback for improvement purposes to security designers. We
have developed a persuasive software toolkit to engage users in structured
discussions about security vulnerabilities in their company and potential
interventions addressing these. In the toolkit we have adapted and integrated
an established framework from conventional crime prevention. In the research
reported here we examine how non-professionals perceived security problems
through a short-term use of the toolkit. We present perceptions from a pilot
lab study in which randomly recruited participants had to analyze a crafted
insider threat problem using the toolkit. Results demonstrate that study
participants were able to successfully identify causes, propose interventions
and engage in providing feedback on proposed interventions. Subsequent
interviews show that participants have developed greater awareness of
information security issues and the framework to address these, which in a real
setting would lead ultimately to significant benefits for the organization.
These results indicate that when well-structured such short-term engagement is
sufficient for users to meaningfully take part in complex security discussions
and develop in-depth understanding of theoretical principles of security.
|
[{'version': 'v1', 'created': 'Tue, 6 Sep 2022 11:37:21 GMT'}]
|
2022-09-07
|
[array(['Ruskov', 'Martin', ''], dtype=object)
array(['Ekblom', 'Paul', ''], dtype=object)
array(['Sasse', 'M. Angela', ''], dtype=object)]
|
17,916 |
1612.06271
|
Jiaheng Wang
|
Jiaheng Wang, Wei Guan, Yongming Huang, Robert Schober, Xiaohu You
|
Distributed Optimization of Hierarchical Small Cell Networks: A GNEP
Framework
|
Accepted by IEEE Journal on Selected Areas in Communications
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Deployment of small cell base stations (SBSs) overlaying the coverage area of
a macrocell BS (MBS) results in a two-tier hierarchical small cell network.
Cross-tier and inter-tier interference not only jeopardize primary macrocell
communication but also limit the spectral efficiency of small cell
communication. This paper focuses on distributed interference management for
downlink small cell networks. We address the optimization of transmit
strategies from both the game theoretical and the network utility maximization
(NUM) perspectives and show that they can be unified in a generalized Nash
equilibrium problem (GNEP) framework. Specifically, the small cell network
design is first formulated as a GNEP, where the SBSs and MBS compete for the
spectral resources by maximizing their own rates while satisfying global
quality of service (QoS) constraints. We analyze the GNEP via variational
inequality theory and propose distributed algorithms, which only require the
broadcasting of some pricing information, to achieve a generalized Nash
equilibrium (GNE). Then, we also consider a nonconvex NUM problem that aims to
maximize the sum rate of all BSs subject to global QoS constraints. We
establish the connection between the NUM problem and a penalized GNEP and show
that its stationary solution can be obtained via a fixed point iteration of the
GNE. We propose GNEP-based distributed algorithms that achieve a stationary
solution of the NUM problem at the expense of additional signaling overhead and
complexity. The convergence of the proposed algorithms is proved and guaranteed
for properly chosen algorithm parameters. The proposed GNEP framework can scale
from a QoS constrained game to a NUM design for small cell networks by trading
off signaling overhead and complexity.
|
[{'version': 'v1', 'created': 'Mon, 19 Dec 2016 17:19:37 GMT'}]
|
2016-12-20
|
[array(['Wang', 'Jiaheng', ''], dtype=object)
array(['Guan', 'Wei', ''], dtype=object)
array(['Huang', 'Yongming', ''], dtype=object)
array(['Schober', 'Robert', ''], dtype=object)
array(['You', 'Xiaohu', ''], dtype=object)]
|
17,917 |
0810.3867
|
Jun Ting Huang
|
J.T. Huang, C.A. Bertulani, V. Guimaraes
|
Radiative capture of nucleons at astrophysical energies with
single-particle states
|
Accepted for publication in Atomic Data & Nuclear Data Tables
| null |
10.1016/j.adt.2010.06.004
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Radiative capture of nucleons at energies of astrophysical interest is one of
the most important processes for nucleosynthesis. The nucleon capture can occur
either by a compound nucleus reaction or by a direct process. The compound
reaction cross sections are usually very small, specially for light nuclei. The
direct capture proceeds either via the formation of a single-particle
resonance, or a non-resonant capture process. In this work we calculate
radiative capture cross sections and astrophysical S-factors for nuclei in the
mass region A<20 using single-particle states. We carefully discuss the
parameter fitting procedure adopted in the simplified two-body treatment of the
capture process. Then we produce a detailed list of cases for which the model
works well. Useful quantities, such as spectroscopic factors and asymptotic
normalization coefficients, are obtained and compared to published data.
|
[{'version': 'v1', 'created': 'Tue, 21 Oct 2008 19:25:43 GMT'}
{'version': 'v2', 'created': 'Tue, 19 May 2009 22:36:47 GMT'}
{'version': 'v3', 'created': 'Mon, 17 Aug 2009 19:45:45 GMT'}]
|
2015-05-13
|
[array(['Huang', 'J. T.', ''], dtype=object)
array(['Bertulani', 'C. A.', ''], dtype=object)
array(['Guimaraes', 'V.', ''], dtype=object)]
|
17,918 |
1002.3964
|
Tobias Micklitz
|
T. Micklitz, M. R. Norman
|
Spin Hamiltonian of Hyperkagome Na4Ir3O8
|
9 pages, 4 figures
|
Phys. Rev. B 81, 174417 (2010)
|
10.1103/PhysRevB.81.174417
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive the spin Hamiltonian for the quantum spin liquid Na4Ir3O8, and then
estimate the direct and superexchange contributions between near neighbor
iridium ions using a tight binding parametrization of the electronic structure.
We find a magnitude of the exchange interaction comparable to experiment for a
reasonable value of the on-site Coulomb repulsion. For one of the two tight
binding parametrizations we have studied, the direct exchange term, which is
isotropic, dominates the total exchange. This provides support for those
theories proposed to describe this novel quantum spin liquid that assume an
isotropic Heisenberg model.
|
[{'version': 'v1', 'created': 'Sun, 21 Feb 2010 12:08:52 GMT'}]
|
2015-05-18
|
[array(['Micklitz', 'T.', ''], dtype=object)
array(['Norman', 'M. R.', ''], dtype=object)]
|
17,919 |
cond-mat/0212166
|
avik w. ghosh
|
Avik W. Ghosh, Titash Rakshit and Supriyo Datta
|
Gating of a molecular transistor: Electrostatic and Conformational
|
Small corrections and typos, rephrased descriptions and added
footnotes. Accepted, Nano Letters (tentatively scheduled for April 2004)
| null | null | null |
cond-mat.mes-hall
| null |
We derive a general result that can be used to evaluate and compare the
transconductance of different field-effect mechanisms in molecular transistors,
both electrostatic and conformational. The electrostatic component leads to the
well-known thermal limit in the absence of tunneling. We show that in a
standard three-terminal geometry and in the absence of strong electron-phonon
coupling, the conformational component can lead to significant advantages only
if the molecular dipole moment \mu is comparable to et_ox, t_ox being the
thickness of the oxide. Surprisingly this conclusion is independent of the
``softness'' of the conformational modes involved, or other geometrical
factors. Detailed numerical results for specific examples are presented in
support of the analytical results.
|
[{'version': 'v1', 'created': 'Sun, 8 Dec 2002 09:43:28 GMT'}
{'version': 'v2', 'created': 'Thu, 11 Mar 2004 14:59:56 GMT'}]
|
2016-08-31
|
[array(['Ghosh', 'Avik W.', ''], dtype=object)
array(['Rakshit', 'Titash', ''], dtype=object)
array(['Datta', 'Supriyo', ''], dtype=object)]
|
17,920 |
2007.05072
|
Christopher Robbiano
|
Christopher Robbiano, Edwin K. P. Chong, and Mahmood R. Azimi-Sadjadi
|
Information-Theoretic Approach to Navigation for Efficient Detection and
Classification of Underwater Objects
| null | null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper addresses an autonomous exploration problem in which a mobile
sensor, placed in a previously unseen search area, utilizes an
information-theoretic navigation cost function to dynamically select the next
sensing action, i.e., location from which to take a measurement, to efficiently
detect and classify objects of interest within the area. The
information-theoretic cost function proposed in this paper consist of two
\textit{information gain} terms, one for detection and localization of objects
and the other for sequential classification of the detected objects. We present
a novel closed-form representation for the cost function, derived from the
definition of mutual information. We evaluate three different policies for
choosing the next sensing action: lawn mower, greedy, and non-greedy. For these
three policies, we compare the results from our information-theoretic cost
functions to the results of other information-theoretic inspired cost
functions. Our simulation results show that search efficiency is greater using
the proposed cost functions compared to those of the other methods, and that
the greedy and non-greedy policies outperform the lawn mower policy.
|
[{'version': 'v1', 'created': 'Thu, 9 Jul 2020 21:21:20 GMT'}]
|
2020-07-13
|
[array(['Robbiano', 'Christopher', ''], dtype=object)
array(['Chong', 'Edwin K. P.', ''], dtype=object)
array(['Azimi-Sadjadi', 'Mahmood R.', ''], dtype=object)]
|
17,921 |
1203.6155
|
Andree-Aimee Toucas
|
Juliana Uribe (D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se),
Jean G\'eringer (D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se),
Bernard Forest (D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se)
|
Shock machine for the mechanical behaviour of hip prostheses: a
description of performance capabilities
| null |
Lubrication Science 24, 2 (2012) 45-60
|
10.1002/ls.167
|
JU-LS-24
|
physics.med-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of this study was to describe the behaviour of a shock machine
designed for testing hip prostheses. A microseparation between head and cup
occurs inducing a shock of several times the body weight, leading to fracture
of ceramic femoral components. Femoral heads and cups of diameter 32 mm
manufactured from alumina were tested in dry and wet conditions. Implants were
subjected to shocks with a load profile of 9 kN load at 2 Hz and various
microseparations. Position is monitored and force is measured with two
acquisition systems. The working range and the device capabilities were
investigated. Only cups tested in dry conditions failed. Observations by
scanning electron microscopy revealed intergranular and transgranular
fractures. Two wear stripes were observed on the heads. Three-dimensional
roughness of wear stripes was measured. Since experimental results are in good
agreement with retrieved femoral heads, the shocks machine reproduces the in
vivo degradations.
|
[{'version': 'v1', 'created': 'Wed, 28 Mar 2012 04:42:24 GMT'}]
|
2012-03-29
|
[array(['Uribe', 'Juliana', '',
'D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se'],
dtype=object)
array(['Géringer', 'Jean', '',
'D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se'],
dtype=object)
array(['Forest', 'Bernard', '',
'D2bm-Ensmse, Cis-Ensmse, Ifresis-Ensmse, Lcg-Ensm.Se'],
dtype=object) ]
|
17,922 |
1207.6175
|
Spencer Backman
|
Spencer Backman
|
A Bijection Between the Recurrent Configurations of a Hereditary
Chip-Firing Model and Spanning Trees
|
13 pages
| null | null | null |
math.CO cond-mat.stat-mech cs.DM math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Hereditary chip-firing models generalize the Abelian sandpile model and the
cluster firing model to an exponential family of games induced by covers of the
vertex set. This generalization retains some desirable properties, e.g.
stabilization is independent of firings chosen and each chip-firing equivalence
class contains a unique recurrent configuration. In this paper we present an
explicit bijection between the recurrent configurations of a hereditary
chip-firing model on a graph and its spanning trees.
|
[{'version': 'v1', 'created': 'Thu, 26 Jul 2012 06:07:14 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Jul 2012 19:50:08 GMT'}]
|
2012-08-01
|
[array(['Backman', 'Spencer', ''], dtype=object)]
|
17,923 |
hep-ph/9410350
|
Donald Shaw
|
D. S. Shaw and R. R. Volkas
|
From $m_{d}=m_{e}$ to Realistic Mass Relations in Quark-Lepton Symmetric
Models
|
13 pages, latex file, UM-P-94/118, RCHEP-33
|
Phys.Rev. D51 (1995) 6490-6494
|
10.1103/PhysRevD.51.6490
| null |
hep-ph
| null |
In recent years a new potential symmetry of fundamental particle physics has
been investigated --- discrete quark-lepton symmetry. When this symmetry is
implemented, however, it often leads to either of the unrealistic predictions
$m_{u}=m_{e}$ or $m_{d}=m_{e}$. This paper considers two possible ways models
based on $m_{d}=m_{e}$ can be made realistic.
|
[{'version': 'v1', 'created': 'Sun, 23 Oct 1994 05:36:57 GMT'}]
|
2009-10-28
|
[array(['Shaw', 'D. S.', ''], dtype=object)
array(['Volkas', 'R. R.', ''], dtype=object)]
|
17,924 |
1601.04475
|
Karol Kozlowski Kajetan
|
K. K. Kozlowski and E. Ragoucy
|
Asymptotic behaviour of two-point functions in multi-species models
|
45 pages, 1 figure
|
Nucl. Phys. B906 (2016) 241
|
10.1016/j.nuclphysb.2016.03.005
| null |
nlin.SI cond-mat.stat-mech math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We extract the long-distance asymptotic behaviour of two-point correlation
functions in massless quantum integrable models containing multi-species
excitations. For such a purpose, we extend to these models the method of a
large-distance regime re-summation of the form factor expansion of correlation
functions. The key feature of our analysis is a technical hypothesis on the
large-volume behaviour of the form factors of local operators in such models.
We check the validity of this hypothesis on the example of the
$SU(3)$-invariant XXX magnet by means of the determinant representations for
the form factors of local operators in this model. Our approach confirms the
structure of the critical exponents obtained previously for numerous models
solvable by the nested Bethe Ansatz.
|
[{'version': 'v1', 'created': 'Mon, 18 Jan 2016 11:24:11 GMT'}]
|
2017-05-03
|
[array(['Kozlowski', 'K. K.', ''], dtype=object)
array(['Ragoucy', 'E.', ''], dtype=object)]
|
17,925 |
1201.3540
|
Kastytis Zubovas
|
Kastytis Zubovas, Andrew King
|
AGN Winds and the Black-Hole - Galaxy Connection
|
5 pages, 1 figure, 1 table. To appear in the proceedings of the "AGN
Winds in Charleston" conference
| null | null | null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
During the last decade, wide-angle powerful outflows from AGN, both on parsec
and kpc scales, have been detected in many galaxies. These outflows are widely
suspected to be responsible for sweeping galaxies clear of their gas. We
present the analytical model describing the propagation of such outflows and
calculate their observable properties. Large-scale AGN-driven outflows should
have kinetic luminosities \sim {\eta}L_Edd/2 \sim 0.05L_Edd and momentum rates
\sim 20L_Edd/c, where L_Edd is the Eddington luminosity of the central black
hole and {\eta} \sim 0.1 its radiative accretion efficiency. This creates an
expanding two-phase medium in which molecular species coexist with hot gas,
which can persist after the central AGN has switched off. This picture predicts
outflow velocities \sim 1000 - 1500 km/s and mass outflow rates up to 4000
M_\odot/yr on kpc scales, fixed mainly by the host galaxy velocity dispersion
(or equivalently black hole mass). We compare our prediction with recent
observational data, finding excellent agreement, and suggest future
observational tests of this picture.
|
[{'version': 'v1', 'created': 'Tue, 17 Jan 2012 16:05:25 GMT'}]
|
2012-01-18
|
[array(['Zubovas', 'Kastytis', ''], dtype=object)
array(['King', 'Andrew', ''], dtype=object)]
|
17,926 |
1403.7363
|
Taesoo Song
|
Taesoo Song, Che Ming Ko
|
Effects of medium modification of pion production threshold in heavy ion
collisions and the nuclear symmetry energy
|
9 pages, 6 figures
| null | null | null |
nucl-th nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the relativistic Vlasov-Uehling-Uhlenbeck (RVUU) equation based on mean
fields from the nonlinear relativistic models, we study the effect of medium
modification of pion production threshold on the total pion yield and the
$\pi^-/\pi^+$ ratio in Au+Au collisions. We find that the in-medium threshold
effect enhances both the total pion yield and the $\pi^-/\pi^+$ ratio, compared
to those without this effect. Furthermore, including the medium modification of
the pion production threshold in asymmetric nuclear matter leads to a larger
$\pi^-/\pi^+$ ratio for the $NL\rho\delta$ model with a stiffer symmetry energy
than the $NL\rho$ model with a softer symmetry energy, opposite to that found
without the in-medium threshold effect. Experimental data from the FOPI
Collaboration are reproduced after including a density-dependent cross section
for $\Delta$ baryon production from nucleon-nucleon collisions, which
suppresses the total pion yield but hardly changes the $\pi^-/\pi^+$ ratio. The
large errors in the experimentally measured $\pi^-/\pi^+$ ratio prevent,
however, the distinction between the predictions from the $NL\rho$ and
$NL\rho\delta$ models.
|
[{'version': 'v1', 'created': 'Fri, 28 Mar 2014 12:40:19 GMT'}]
|
2014-03-31
|
[array(['Song', 'Taesoo', ''], dtype=object)
array(['Ko', 'Che Ming', ''], dtype=object)]
|
17,927 |
1303.1413
|
Dieter Luest
|
Falk Hassler, Dieter Lust
|
Non-commutative/non-associative IIA (IIB) Q- and R-branes and their
intersections
|
31 pages, replaced version will be published in JHEP
| null | null |
LMU-ASC 11/13, MPP-2013-52
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we discuss the construction of non-geometric Q- and R-branes as
sources of non-geometric Q- and R-fluxes in string compactifications. The
non-geometric Q-branes, being obtained via T-duality from the NS 5-brane or
respectively from the KK-monopole, are still local solutions of the standard NS
action, where however the background fields G and B possess non-geometric
global monodromy properties. We show that using double field theory, redefined
background fields tilde G and beta as well as their corresponding effective
action, the Q-branes are locally and globally well behaved solutions.
Furthermore the R-brane solution can be at least formally constructed using
dual coordinates. We derive the associated non-geometric Q- and R-fluxes and
discuss that closed strings moving in the space transversal to the
world-volumes of the non-geometric branes see a non-commutative or a
non-associative geometry.
In the second part of the paper we construct intersecting Q- and R-brane
configurations as completely supersymmetric solutions of type IIA/B
supergravity with certain SU(3) x SU(3) group structures. In the near horizon
limit the intersecting brane configurations lead to type II backgrounds of the
form AdS4 x M6, where the six-dimensional compact space M6 is a torus fibration
with various non-geometric Q- and R-fluxes in the compact directions. It
exhibits an interesting non-commutative and non-associate geometric structure.
Furthermore we also determine some of the effective four-dimensional
superpotentials originating from the non-geometric fluxes.
|
[{'version': 'v1', 'created': 'Wed, 6 Mar 2013 18:25:23 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Jun 2013 11:13:43 GMT'}]
|
2013-06-27
|
[array(['Hassler', 'Falk', ''], dtype=object)
array(['Lust', 'Dieter', ''], dtype=object)]
|
17,928 |
0908.3626
|
Brian C. Tiburzi
|
William Detmold, Brian C. Tiburzi, Andre Walker-Loud
|
Lattice QCD in Background Fields
|
10 pages, 5 figures, talk given by B. C. Tiburzi at the 10th Workshop
on Non-Perturbative QCD, June 8-12, 2009, Paris, France
| null | null |
JLAB-THY-09-1052, UMD-40762-462
|
hep-lat hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Electromagnetic properties of hadrons can be computed by lattice simulations
of QCD in background fields. We demonstrate new techniques for the
investigation of charged hadron properties in electric fields. Our current
calculations employ large electric fields, motivating us to analyze chiral
dynamics in strong QED backgrounds, and subsequently uncover surprising
non-perturbative effects present at finite volume.
|
[{'version': 'v1', 'created': 'Tue, 25 Aug 2009 14:27:04 GMT'}]
|
2009-08-26
|
[array(['Detmold', 'William', ''], dtype=object)
array(['Tiburzi', 'Brian C.', ''], dtype=object)
array(['Walker-Loud', 'Andre', ''], dtype=object)]
|
17,929 |
2209.03061
|
Lauren M.M. Bonaldo
|
L.M.M. Bonaldo, E.J. Hurtado, W. Neves
|
On a study and applications of the Concentration-compactness type
principle for Systems with critical terms in $\mathbb{R}^{N}$
| null | null | null | null |
math.AP
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we obtain some important variants of the Lions and Chabrowski
Concentration-compactness principle, in the context of fractional Sobolev
spaces with variable exponents, especially for nonlinear systems. As an
application of the results, we show the existence and assymptotic behaviour of
nontrivial solutions for elliptic systems involving a new class of general
nonlocal integrodifferential operators with exponent variables and critical
growth conditions in $\mathbb{R}^{N}$.
|
[{'version': 'v1', 'created': 'Wed, 7 Sep 2022 10:57:54 GMT'}]
|
2022-09-08
|
[array(['Bonaldo', 'L. M. M.', ''], dtype=object)
array(['Hurtado', 'E. J.', ''], dtype=object)
array(['Neves', 'W.', ''], dtype=object)]
|
17,930 |
nucl-th/9906003
|
Ulrich Heinz
|
Peter F. Kolb, Josef Sollfrank, and Ulrich Heinz
|
Anisotropic flow from AGS to LHC energies
|
5 pages ReVTeX, incl. 4 figures, subm. to Phys. Lett. B. Improved
discussion of results and a few added references
|
Phys.Lett.B459:667-673,1999
|
10.1016/S0370-2693(99)00720-0
|
CERN-TH/99-161
|
nucl-th hep-ph
| null |
Within hydrodynamics we study the effects of the initial spatial anisotropy
in non-central heavy-ion collisions on the momentum distributions of the
emitted hadrons. We show that the elliptic flow measured at midrapidity in 158
A GeV/c Pb+Pb collisions can be quantitatively reproduced by hydrodynamic
expansion, indicating early thermalization in the collision. We predict the
excitation functions of the 2nd and 4th harmonic flow coefficients from AGS to
LHC energies and discuss their sensitivity to the quark-hadron phase
transition.
|
[{'version': 'v1', 'created': 'Tue, 1 Jun 1999 12:50:44 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jun 1999 16:47:40 GMT'}]
|
2009-10-09
|
[array(['Kolb', 'Peter F.', ''], dtype=object)
array(['Sollfrank', 'Josef', ''], dtype=object)
array(['Heinz', 'Ulrich', ''], dtype=object)]
|
17,931 |
2010.08303
|
Boyi Liu
|
Boyi Liu, Lujia Wang, Xinquan Chen, Lexiong Huang, Cheng-Zhong Xu
|
Peer-Assisted Robotic Learning: A Data-Driven Collaborative Learning
Approach for Cloud Robotic Systems
| null | null | null | null |
cs.RO cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A technological revolution is occurring in the field of robotics with the
data-driven deep learning technology. However, building datasets for each local
robot is laborious. Meanwhile, data islands between local robots make data
unable to be utilized collaboratively. To address this issue, the work presents
Peer-Assisted Robotic Learning (PARL) in robotics, which is inspired by the
peer-assisted learning in cognitive psychology and pedagogy. PARL implements
data collaboration with the framework of cloud robotic systems. Both data and
models are shared by robots to the cloud after semantic computing and training
locally. The cloud converges the data and performs augmentation, integration,
and transferring. Finally, fine tune this larger shared dataset in the cloud to
local robots. Furthermore, we propose the DAT Network (Data Augmentation and
Transferring Network) to implement the data processing in PARL. DAT Network can
realize the augmentation of data from multi-local robots. We conduct
experiments on a simplified self-driving task for robots (cars). DAT Network
has a significant improvement in the augmentation in self-driving scenarios.
Along with this, the self-driving experimental results also demonstrate that
PARL is capable of improving learning effects with data collaboration of local
robots.
|
[{'version': 'v1', 'created': 'Fri, 16 Oct 2020 10:52:54 GMT'}]
|
2020-10-19
|
[array(['Liu', 'Boyi', ''], dtype=object)
array(['Wang', 'Lujia', ''], dtype=object)
array(['Chen', 'Xinquan', ''], dtype=object)
array(['Huang', 'Lexiong', ''], dtype=object)
array(['Xu', 'Cheng-Zhong', ''], dtype=object)]
|
17,932 |
1107.4997
|
George Savvidy K
|
Ignatios Antoniadis and George Savvidy
|
Conformal invariance of tensor bosons tree amplitudes
|
17 pages; references added; Mod.Phys.Lett.A (2012). arXiv admin note:
text overlap with arXiv:1007.3756
|
Mod.Phys.Lett. A27 (2012) 1250103
|
10.1142/S0217732312501039
|
CERN-PH-TH/2011-175; NRCPS-HE-38-2011
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The BCFW recursion relation allows to find out the tree-level scattering
amplitudes for gluons and tensor gauge bosons in generalized Yang-Mills theory.
We demonstrate that the corresponding MHV amplitudes for the tensor gauge
bosons of spin-s and n gluons are invariant under conformal group
transformations. We discuss and compare the tree-level scattering amplitudes
for the charged tensor bosons with the corresponding scattering amplitudes for
gravitons, stressing their differences and similarities.
|
[{'version': 'v1', 'created': 'Mon, 25 Jul 2011 16:47:16 GMT'}
{'version': 'v2', 'created': 'Mon, 14 May 2012 06:27:39 GMT'}]
|
2012-06-07
|
[array(['Antoniadis', 'Ignatios', ''], dtype=object)
array(['Savvidy', 'George', ''], dtype=object)]
|
17,933 |
1901.06865
|
Erich A Muller
|
Frederike Jaeger, Omar K. Matar, and Erich A. M\"uller
|
Transport Properties of Water Confined in a Graphene Nanochannel
|
32 pages, 7 figures. Supplementary information is too large to
archive - please request to the main author (EAM)
| null | null | null |
physics.comp-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Equilibrium molecular dynamics simulations are used to investigate the effect
of phase transitions on the transport properties of highly-confined water
between parallel graphene sheets. An abrupt reduction by several orders of
magnitude in the mobility of water is observed in strong confinement, as
indicated by reduced diffusivity and increased shear viscosity values. The bulk
viscosity, which is related to the resistance to expansion and compression of a
substance, is also calculated, showing an enhancement compared to the bulk
value for all levels of confinement. An investigation into the phase behaviour
of confined water reveals a transition from a liquid monolayer to a rhombic
frozen monolayer at nanochannel heights between 6.8-7.8 \r{A}; for larger
separations, multilayer liquid water is recovered. It is shown how this phase
transition is at the root of the impeded transport.
|
[{'version': 'v1', 'created': 'Mon, 21 Jan 2019 10:41:25 GMT'}]
|
2019-01-23
|
[array(['Jaeger', 'Frederike', ''], dtype=object)
array(['Matar', 'Omar K.', ''], dtype=object)
array(['Müller', 'Erich A.', ''], dtype=object)]
|
17,934 |
1901.00466
|
Davis Rempe
|
Davis Rempe, Srinath Sridhar, He Wang, Leonidas J. Guibas
|
Learning Generalizable Physical Dynamics of 3D Rigid Objects
|
13 pages, 12 figures, 1 table
| null | null | null |
cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Humans have a remarkable ability to predict the effect of physical
interactions on the dynamics of objects. Endowing machines with this ability
would allow important applications in areas like robotics and autonomous
vehicles. In this work, we focus on predicting the dynamics of 3D rigid
objects, in particular an object's final resting position and total rotation
when subjected to an impulsive force. Different from previous work, our
approach is capable of generalizing to unseen object shapes - an important
requirement for real-world applications. To achieve this, we represent object
shape as a 3D point cloud that is used as input to a neural network, making our
approach agnostic to appearance variation. The design of our network is
informed by an understanding of physical laws. We train our model with data
from a physics engine that simulates the dynamics of a large number of shapes.
Experiments show that we can accurately predict the resting position and total
rotation for unseen object geometries.
|
[{'version': 'v1', 'created': 'Wed, 2 Jan 2019 17:57:50 GMT'}]
|
2019-01-03
|
[array(['Rempe', 'Davis', ''], dtype=object)
array(['Sridhar', 'Srinath', ''], dtype=object)
array(['Wang', 'He', ''], dtype=object)
array(['Guibas', 'Leonidas J.', ''], dtype=object)]
|
17,935 |
2211.13942
|
Zhuang Xiong
|
Zhuang Xiong, Yang Gao, Feng Liu, Hongfu Sun
|
Affine Transformation Edited and Refined Deep Neural Network for
Quantitative Susceptibility Mapping
| null | null | null | null |
physics.med-ph cs.CV
|
http://creativecommons.org/publicdomain/zero/1.0/
|
Deep neural networks have demonstrated great potential in solving dipole
inversion for Quantitative Susceptibility Mapping (QSM). However, the
performances of most existing deep learning methods drastically degrade with
mismatched sequence parameters such as acquisition orientation and spatial
resolution. We propose an end-to-end AFfine Transformation Edited and Refined
(AFTER) deep neural network for QSM, which is robust against arbitrary
acquisition orientation and spatial resolution up to 0.6 mm isotropic at the
finest. The AFTER-QSM neural network starts with a forward affine
transformation layer, followed by an Unet for dipole inversion, then an inverse
affine transformation layer, followed by a Residual Dense Network (RDN) for QSM
refinement. Simulation and in-vivo experiments demonstrated that the proposed
AFTER-QSM network architecture had excellent generalizability. It can
successfully reconstruct susceptibility maps from highly oblique and
anisotropic scans, leading to the best image quality assessments in simulation
tests and suppressed streaking artifacts and noise levels for in-vivo
experiments compared with other methods. Furthermore, ablation studies showed
that the RDN refinement network significantly reduced image blurring and
susceptibility underestimation due to affine transformations. In addition, the
AFTER-QSM network substantially shortened the reconstruction time from minutes
using conventional methods to only a few seconds.
|
[{'version': 'v1', 'created': 'Fri, 25 Nov 2022 07:54:26 GMT'}]
|
2022-11-28
|
[array(['Xiong', 'Zhuang', ''], dtype=object)
array(['Gao', 'Yang', ''], dtype=object)
array(['Liu', 'Feng', ''], dtype=object)
array(['Sun', 'Hongfu', ''], dtype=object)]
|
17,936 |
2303.12208
|
Sungwoong Kim
|
Sungwoong Kim, Daejin Jo, Donghoon Lee, Jongmin Kim
|
MAGVLT: Masked Generative Vision-and-Language Transformer
|
CVPR 2023
| null | null | null |
cs.CV cs.CL cs.LG
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
While generative modeling on multimodal image-text data has been actively
developed with large-scale paired datasets, there have been limited attempts to
generate both image and text data by a single model rather than a generation of
one fixed modality conditioned on the other modality. In this paper, we explore
a unified generative vision-and-language (VL) model that can produce both
images and text sequences. Especially, we propose a generative VL transformer
based on the non-autoregressive mask prediction, named MAGVLT, and compare it
with an autoregressive generative VL transformer (ARGVLT). In comparison to
ARGVLT, the proposed MAGVLT enables bidirectional context encoding, fast
decoding by parallel token predictions in an iterative refinement, and extended
editing capabilities such as image and text infilling. For rigorous training of
our MAGVLT with image-text pairs from scratch, we combine the image-to-text,
text-to-image, and joint image-and-text mask prediction tasks. Moreover, we
devise two additional tasks based on the step-unrolled mask prediction and the
selective prediction on the mixture of two image-text pairs. Experimental
results on various downstream generation tasks of VL benchmarks show that our
MAGVLT outperforms ARGVLT by a large margin even with significant inference
speedup. Particularly, MAGVLT achieves competitive results on both zero-shot
image-to-text and text-to-image generation tasks from MS-COCO by one
moderate-sized model (fewer than 500M parameters) even without the use of
monomodal data and networks.
|
[{'version': 'v1', 'created': 'Tue, 21 Mar 2023 21:49:39 GMT'}]
|
2023-03-23
|
[array(['Kim', 'Sungwoong', ''], dtype=object)
array(['Jo', 'Daejin', ''], dtype=object)
array(['Lee', 'Donghoon', ''], dtype=object)
array(['Kim', 'Jongmin', ''], dtype=object)]
|
17,937 |
0902.4009
|
John Learned
|
John G. Learned
|
High Energy Neutrino Physics with Liquid Scintillation Detectors
|
8 pages, 5 figures
| null | null | null |
hep-ex physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Large liquid scintillation detectors have been generally dedicated to low
energy neutrino measurements, in the MeV energy region (as for example, KamLAND
and Borexino). Herein we describe the potential employment of large detectors
(>1 kiloton) for studies of higher energy neutrinos interactions, from the
cosmic rays and as a long baseline neutrino detector. Generally when people
have considered large new instruments such as Hanohano and LENA, they have
abandoned the possibility of doing useful measurements with higher energy
neutrino interactions since these produce enough light to illuminate every
photomultiplier tube, and the scintillation light is isotropic. Here we take
into account Fermat's principle, which tells us that indeed the first light to
reach the PMTs will be on or near the lightcone, the "Fermat surface", and that
directional track information is available. Moreover we have realized that
particle type distinction is possible (quasi-elastic muons from electrons). In
fact the resolution from a detector of comparable size to SuperKamiokande, may
be better in both angle, energy and possibly particle type. This realization
opens the doors to a number of applications. Moreover, this capability can be
demonstrated with the use of (future) KamLAND detected events in the new long
baseline neutrino beam from the Jaeri accelerator in Japan, due to start
operations this year. Some of the most attractive possibilities for the future
may be in using Hanohano as a movable long baseline detector in this same beam,
the employment of LENA in Europe in future long baseline neutrino beams from
CERN, and in the DUSEL underground laboratory at Homestake.
|
[{'version': 'v1', 'created': 'Mon, 23 Feb 2009 21:11:14 GMT'}]
|
2009-02-25
|
[array(['Learned', 'John G.', ''], dtype=object)]
|
17,938 |
2306.12340
|
Julian Cano
|
Juli\'an C. Cano, Carlos A. Di Prisco, Michael Hru\v{s}\'ak
|
Some combinatorial properties of semiselective ideals
| null | null | null | null |
math.LO
|
http://creativecommons.org/licenses/by/4.0/
|
We present several combinatorial properties of semiselective ideals on the
set of natural numbers. The continuum hypothesis implies that the complement of
every selective ideal contains a selective ultrafilter, however for
semiselective ideals this is not the case. We prove that under certain
hypothesis, for example $V=L$, there are semiselective ideals whose complement
does not contain a selective ultrafilter, and that it is also consistent that
the complement of every semiselective ideal contains a selective ultrafilter;
specifically, we show that if $V=L$ then there is a generic extension of $V$
where this occurs. We present other results concerning semiselective ideals,
namely an alternative proof of Ellentuck's theorem for the local Ramsey
property, and we prove some facts about the additivity of the ideal of local
Ramsey null sets, and also about the generalized Suslin operation on the
algebra of local Ramsey sets.
|
[{'version': 'v1', 'created': 'Wed, 21 Jun 2023 15:38:22 GMT'}]
|
2023-06-22
|
[array(['Cano', 'Julián C.', ''], dtype=object)
array(['Di Prisco', 'Carlos A.', ''], dtype=object)
array(['Hrušák', 'Michael', ''], dtype=object)]
|
17,939 |
2108.12657
|
Daniele Schiavazzi
|
Yu Wang, Fang Liu and Daniele E. Schiavazzi
|
Variational Inference with NoFAS: Normalizing Flow with Adaptive
Surrogate for Computationally Expensive Models
| null | null |
10.1016/j.jcp.2022.111454
| null |
cs.LG stat.ML
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Fast inference of numerical model parameters from data is an important
prerequisite to generate predictive models for a wide range of applications.
Use of sampling-based approaches such as Markov chain Monte Carlo may become
intractable when each likelihood evaluation is computationally expensive. New
approaches combining variational inference with normalizing flow are
characterized by a computational cost that grows only linearly with the
dimensionality of the latent variable space, and rely on gradient-based
optimization instead of sampling, providing a more efficient approach for
Bayesian inference about the model parameters. Moreover, the cost of frequently
evaluating an expensive likelihood can be mitigated by replacing the true model
with an offline trained surrogate model, such as neural networks. However, this
approach might generate significant bias when the surrogate is insufficiently
accurate around the posterior modes. To reduce the computational cost without
sacrificing inferential accuracy, we propose Normalizing Flow with Adaptive
Surrogate (NoFAS), an optimization strategy that alternatively updates the
normalizing flow parameters and surrogate model parameters. We also propose an
efficient sample weighting scheme for surrogate model training that preserves
global accuracy while effectively capturing high posterior density regions. We
demonstrate the inferential and computational superiority of NoFAS against
various benchmarks, including cases where the underlying model lacks
identifiability. The source code and numerical experiments used for this study
are available at https://github.com/cedricwangyu/NoFAS.
|
[{'version': 'v1', 'created': 'Sat, 28 Aug 2021 14:31:45 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Apr 2022 13:53:19 GMT'}]
|
2022-08-10
|
[array(['Wang', 'Yu', ''], dtype=object)
array(['Liu', 'Fang', ''], dtype=object)
array(['Schiavazzi', 'Daniele E.', ''], dtype=object)]
|
17,940 |
2009.14795
|
Shane Mueller
|
Robert R. Hoffman, William J. Clancey, and Shane T. Mueller
|
Explaining AI as an Exploratory Process: The Peircean Abduction Model
| null | null | null | null |
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Current discussions of "Explainable AI" (XAI) do not much consider the role
of abduction in explanatory reasoning (see Mueller, et al., 2018). It might be
worthwhile to pursue this, to develop intelligent systems that allow for the
observation and analysis of abductive reasoning and the assessment of abductive
reasoning as a learnable skill. Abductive inference has been defined in many
ways. For example, it has been defined as the achievement of insight. Most
often abduction is taken as a single, punctuated act of syllogistic reasoning,
like making a deductive or inductive inference from given premises. In
contrast, the originator of the concept of abduction---the American
scientist/philosopher Charles Sanders Peirce---regarded abduction as an
exploratory activity. In this regard, Peirce's insights about reasoning align
with conclusions from modern psychological research. Since abduction is often
defined as "inferring the best explanation," the challenge of implementing
abductive reasoning and the challenge of automating the explanation process are
closely linked. We explore these linkages in this report. This analysis
provides a theoretical framework for understanding what the XAI researchers are
already doing, it explains why some XAI projects are succeeding (or might
succeed), and it leads to design advice.
|
[{'version': 'v1', 'created': 'Wed, 30 Sep 2020 17:10:37 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Oct 2020 16:43:24 GMT'}]
|
2020-10-02
|
[array(['Hoffman', 'Robert R.', ''], dtype=object)
array(['Clancey', 'William J.', ''], dtype=object)
array(['Mueller', 'Shane T.', ''], dtype=object)]
|
17,941 |
2106.03199
|
Zhenhua Liu
|
Zhenhua Liu
|
Every finite graph arises as the singular set of a compact $3$-d
calibrated area minimizing surface
|
Mathematica verifications attached
| null | null | null |
math.DG
|
http://creativecommons.org/licenses/by/4.0/
|
Given any (not necessarily connected) combinatorial finite graph and any
compact smooth $6$-manifold $M^6$ with the third Betti number $b_3\not=0$, we
construct a calibrated 3-dimensional homologically area minimizing surface on
$M$ equipped in a smooth metric $g$, so that the singular set of the surface is
precisely an embedding of this finite graph. Moreover, the calibration form
near the singular set is a smoothly $GL(6,\mathbb{R})$ twisted special
Lagrangian form. The constructions are based on some unpublished ideas of
Professor Camillo De Lellis and Professor Robert Bryant.
|
[{'version': 'v1', 'created': 'Sun, 6 Jun 2021 18:13:46 GMT'}
{'version': 'v2', 'created': 'Sun, 1 Aug 2021 20:29:32 GMT'}
{'version': 'v3', 'created': 'Wed, 30 Nov 2022 13:54:43 GMT'}
{'version': 'v4', 'created': 'Mon, 17 Apr 2023 15:03:30 GMT'}]
|
2023-04-18
|
[array(['Liu', 'Zhenhua', ''], dtype=object)]
|
17,942 |
2205.01046
|
Lino Amorim
|
Lino Amorim, Cheol-Hyun Cho
|
Ungraded matrix factorizations as mirrors of non-orientable Lagrangians
| null | null | null | null |
math.SG math-ph math.AG math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce the notion of ungraded matrix factorization as a mirror of
non-orientable Lagrangian submanifolds. An ungraded matrix factorization of a
polynomial $W$, with coefficients in a field of characteristic 2, is a square
matrix $Q$ of polynomial entries satisfying $Q^2 = W \cdot \mathrm{Id}$. We
then show that non-orientable Lagrangians correspond to ungraded matrix
factorizations under the localized mirror functor and illustrate this
construction in a few instances. Our main example is the Lagrangian submanifold
$\mathbb{R}P^2 \subset \mathbb{C}P^2$ and its mirror ungraded matrix
factorization, which we construct and study. In particular, we prove a version
of Homological Mirror Symmetry in this setting.
|
[{'version': 'v1', 'created': 'Mon, 2 May 2022 17:30:59 GMT'}]
|
2022-05-03
|
[array(['Amorim', 'Lino', ''], dtype=object)
array(['Cho', 'Cheol-Hyun', ''], dtype=object)]
|
17,943 |
1101.5240
|
David Brooks
|
David H. Brooks, Harry P. Warren, Peter R. Young
|
EUV spectral line formation and the temperature structure of active
region fan loops: observations with Hinode/EIS and SDO/AIA
|
To be published in ApJ. Figure 6 is reduced resolution to meet size
limits. The abstract has been significantly shortened (original in PDF file)
| null |
10.1088/0004-637X/730/2/85
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the aim of studying AR fan loops using Hinode/EIS and SDO/AIA, we
investigate a number of inconsistencies in modeling the absolute intensities of
Fe VIII and Si VII lines, and address why their images look very similar
despite the fact that they have significantly different formation temperatures
in ionization equilibrium: log T/K = 5.6 and 5.8. These issues are important to
resolve because confidence has been undermined in their use for DEM analysis,
and Fe VIII is the main contributor to the AIA 131A channel at low
temperatures. Furthermore, they are the best EIS lines to use for velocity
studies, and for assigning the correct temperature to velocity measurements in
the fans. We find that the Fe VIII 185.213A line is particularly sensitive to
the slope of the DEM, leading to disproportionate changes in its effective
formation temperature. If the DEM has a steep gradient in the log T/K = 5.6 to
5.8 range, or is strongly peaked, Fe VIII 185.213A and Si VII 275.368A will be
formed at the same temperature. We show that this effect explains the
similarity of these images in the fans. Furthermore, we show that the most
recent ionization balance compilations resolve the discrepancies in absolute
intensities. We then combine EIS and AIA to determine the temperature structure
of a number of fan loops and find that they have peak temperatures of
0.8--1.2MK. The EIS data indicate that the temperature distribution has a
finite (but narrow) width < log sigma/K = 5.5 which, in one case, is found to
broaden substantially towards the loop base. AIA and EIS yield similar results
on the temperature, emission measure, and thermal distribution in the fans,
though sometimes the AIA data suggest a relatively larger thermal width. The
result is that both the Fe VIII 185.213A and Si VII 275.368A lines are formed
at log T/K ~ 5.9 in the fans, and the AIA 131A response also shifts to this
temperature.
|
[{'version': 'v1', 'created': 'Thu, 27 Jan 2011 09:59:28 GMT'}]
|
2015-05-27
|
[array(['Brooks', 'David H.', ''], dtype=object)
array(['Warren', 'Harry P.', ''], dtype=object)
array(['Young', 'Peter R.', ''], dtype=object)]
|
17,944 |
2202.06757
|
Yixin Shen
|
Martin R. Albrecht, Milo\v{s} Prokop, Yixin Shen, Petros Wallden
|
Variational quantum solutions to the Shortest Vector Problem
| null |
Quantum 7, 933 (2023)
|
10.22331/q-2023-03-02-933
| null |
quant-ph cs.CR
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
A fundamental computational problem is to find a shortest non-zero vector in
Euclidean lattices, a problem known as the Shortest Vector Problem (SVP). This
problem is believed to be hard even on quantum computers and thus plays a
pivotal role in post-quantum cryptography. In this work we explore how
(efficiently) Noisy Intermediate Scale Quantum (NISQ) devices may be used to
solve SVP. Specifically, we map the problem to that of finding the ground state
of a suitable Hamiltonian. In particular, (i) we establish new bounds for
lattice enumeration, this allows us to obtain new bounds (resp.~estimates) for
the number of qubits required per dimension for any lattices (resp.~random
q-ary lattices) to solve SVP; (ii) we exclude the zero vector from the
optimization space by proposing (a) a different classical optimisation loop or
alternatively (b) a new mapping to the Hamiltonian. These improvements allow us
to solve SVP in dimension up to 28 in a quantum emulation, significantly more
than what was previously achieved, even for special cases. Finally, we
extrapolate the size of NISQ devices that is required to be able to solve
instances of lattices that are hard even for the best classical algorithms and
find that with approximately $10^3$ noisy qubits such instances can be tackled.
|
[{'version': 'v1', 'created': 'Mon, 14 Feb 2022 14:27:38 GMT'}
{'version': 'v2', 'created': 'Fri, 22 Apr 2022 16:01:00 GMT'}
{'version': 'v3', 'created': 'Fri, 20 May 2022 12:51:19 GMT'}
{'version': 'v4', 'created': 'Tue, 21 Feb 2023 15:36:05 GMT'}
{'version': 'v5', 'created': 'Thu, 23 Feb 2023 13:56:56 GMT'}]
|
2023-03-09
|
[array(['Albrecht', 'Martin R.', ''], dtype=object)
array(['Prokop', 'Miloš', ''], dtype=object)
array(['Shen', 'Yixin', ''], dtype=object)
array(['Wallden', 'Petros', ''], dtype=object)]
|
17,945 |
1706.02386
|
Daniele Ramazzotti
|
Giulio Caravagna and Daniele Ramazzotti
|
Learning the structure of Bayesian Networks via the bootstrap
| null | null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Learning the structure of dependencies among multiple random variables is a
problem of considerable theoretical and practical interest. Within the context
of Bayesian Networks, a practical and surprisingly successful solution to this
learning problem is achieved by adopting score-functions optimisation schema,
augmented with multiple restarts to avoid local optima. Yet, the conditions
under which such strategies work well are poorly understood, and there are also
some intrinsic limitations to learning the directionality of the interaction
among the variables. Following an early intuition of Friedman and Koller, we
propose to decouple the learning problem into two steps: first, we identify a
partial ordering among input variables which constrains the structural learning
problem, and then propose an effective bootstrap-based algorithm to simulate
augmented data sets, and select the most important dependencies among the
variables. By using several synthetic data sets, we show that our algorithm
yields better recovery performance than the state of the art, increasing the
chances of identifying a globally-optimal solution to the learning problem, and
solving also well-known identifiability issues that affect the standard
approach. We use our new algorithm to infer statistical dependencies between
cancer driver somatic mutations detected by high-throughput genome sequencing
data of multiple colorectal cancer patients. In this way, we also show how the
proposed methods can shade new insights about cancer initiation, and
progression. Code: https://github.com/caravagn/Bootstrap-based-Learning
|
[{'version': 'v1', 'created': 'Wed, 7 Jun 2017 21:30:47 GMT'}
{'version': 'v2', 'created': 'Tue, 19 Jan 2021 17:26:12 GMT'}]
|
2021-01-20
|
[array(['Caravagna', 'Giulio', ''], dtype=object)
array(['Ramazzotti', 'Daniele', ''], dtype=object)]
|
17,946 |
1806.09094
|
Yanxiang Jiang
|
Wenlong Huang, Yanxiang Jiang, Mehdi Bennis, Fu-Chun Zheng, Haris
Gacanin, and Xiaohu You
|
Decentralized Asynchronous Coded Caching in Fog-RAN
|
6 pages, 2 figures. This work is accepted by IEEE VTC 2018 FALL
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we investigate asynchronous coded caching in fog radio access
networks (F-RAN). To minimize the fronthaul load, the encoding set collapsing
rule and encoding set partition method are proposed to establish the
relationship between the coded-multicasting contents in asynchronous and
synchronous coded caching. Furthermore, a decentralized asynchronous coded
caching scheme is proposed, which provides asynchronous and synchronous
transmission methods for different delay requirements. The simulation results
show that our proposed scheme creates considerable coded-multicasting
opportunities in asynchronous request scenarios.
|
[{'version': 'v1', 'created': 'Sun, 24 Jun 2018 07:07:07 GMT'}]
|
2018-06-26
|
[array(['Huang', 'Wenlong', ''], dtype=object)
array(['Jiang', 'Yanxiang', ''], dtype=object)
array(['Bennis', 'Mehdi', ''], dtype=object)
array(['Zheng', 'Fu-Chun', ''], dtype=object)
array(['Gacanin', 'Haris', ''], dtype=object)
array(['You', 'Xiaohu', ''], dtype=object)]
|
17,947 |
1909.04281
|
Christopher O'Neill
|
Franklin Kerstetter, Christopher O'Neill
|
On parametrized families of numerical semigroups
| null | null | null | null |
math.AC math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A numerical semigroup is an additive subsemigroup of the non-negative
integers. In this paper, we consider parametrized families of numerical
semigroups of the form $P_n = \langle f_1(n), \ldots, f_k(n) \rangle$ for
polynomial functions $f_i$. We conjecture that for large $n$, the Betti
numbers, Frobenius number, genus, and type of $P_n$ each coincide with a
quasipolynomial. This conjecture has already been proven in general for
Frobenius numbers, and for the remaining quantities in the special case when
$P_n = \langle n, n + r_2, \ldots, n + r_k \rangle$. Our main result is to
prove our conjecture in the case where each $f_i$ is linear. In the process, we
develop the notion of weighted factorization length, and generalize several
known results for standard factorization lengths and delta sets to this
weighted setting.
|
[{'version': 'v1', 'created': 'Tue, 10 Sep 2019 04:40:13 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Dec 2019 19:50:44 GMT'}
{'version': 'v3', 'created': 'Tue, 19 May 2020 17:01:39 GMT'}]
|
2020-05-20
|
[array(['Kerstetter', 'Franklin', ''], dtype=object)
array(["O'Neill", 'Christopher', ''], dtype=object)]
|
17,948 |
1805.06371
|
Yian Xu
|
Michael Giudici, Cai Heng Li and Yian Xu
|
Constructing 2-Arc-Transitive Covers of Hypercubes
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce the notion of a symmetric basis of a vector space equipped with
a quadratic form, and provide a sufficient and necessary condition for the
existence to such a basis. Symmetric bases are then used to study Cayley graphs
of certain extraspecial 2-groups of order 2^{2r+1} (r\geq 1), which are further
shown to be normal Cayley graphs and 2-arc-transitive covers of 2r-dimensional
hypercubes.
|
[{'version': 'v1', 'created': 'Wed, 16 May 2018 15:32:57 GMT'}
{'version': 'v2', 'created': 'Tue, 7 May 2019 11:39:29 GMT'}]
|
2019-05-08
|
[array(['Giudici', 'Michael', ''], dtype=object)
array(['Li', 'Cai Heng', ''], dtype=object)
array(['Xu', 'Yian', ''], dtype=object)]
|
17,949 |
1203.1516
|
Fran\c{c}ois Ladieu
|
Fran\c{c}ois Ladieu, Coralie Brun and Denis L'H\^ote
|
Nonlinear dielectric susceptibilities in supercooled liquids: a toy
model
|
13 pages, 5 figures
| null | null | null |
cond-mat.soft cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The dielectric response of supercooled liquids is phenomenologically modeled
by a set of Asymmetric Double Wells (ADW), where each ADW contains a dynamical
heterogeneity of $N_{corr}$ molecules. We find that the linear macroscopic
susceptibility $\chi_1$ does not depend on $N_{corr}$ contrary to all higher
order susceptibilities $\chi_{2k+1}$. We show that $\chi_{2k+1}$ is
proportional to the $k^{th}$ moment of $N_{corr}$, which could pave the way for
new experiments on glass transition. In particular, as predicted by Bouchaud
and Biroli on general grounds [Phys. Rev. B, {\bf 72}, 064204 (2005)], we find
that $\chi_3$ is proportional to the average value of $N_{corr}$. We fully
calculate $\chi_3$ and, with plausible values of few parameters our model
accounts for the salient features of the experimental behavior of $\chi_3$ of
supercooled glycerol.
|
[{'version': 'v1', 'created': 'Wed, 7 Mar 2012 16:11:42 GMT'}]
|
2012-03-08
|
[array(['Ladieu', 'François', ''], dtype=object)
array(['Brun', 'Coralie', ''], dtype=object)
array(["L'Hôte", 'Denis', ''], dtype=object)]
|
17,950 |
2306.15684
|
Henry Dambanemuya
|
Henry K. Dambanemuya and Johannes Wachs and Em\H{o}ke-\'Agnes Horv\'at
|
Understanding (Ir)rational Herding Online
| null | null | null | null |
cs.SI physics.soc-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Investigations of social influence in collective decision-making have become
possible due to recent technologies and platforms that record interactions in
far larger groups than could be studied before. Herding and its impact on
decision-making are critical areas of practical interest and research study.
However, despite theoretical work suggesting that it matters whether
individuals choose who to imitate based on cues such as experience or whether
they herd at random, there is little empirical analysis of this distinction. To
demonstrate the distinction between what the literature calls "rational" and
"irrational" herding, we use data on tens of thousands of loans from a
well-established online peer-to-peer (p2p) lending platform. First, we employ
an empirical measure of memory in complex systems to measure herding in
lending. Then, we illustrate a network-based approach to visualize herding.
Finally, we model the impact of herding on collective outcomes. Our study
reveals that loan performance is not solely determined by whether the lenders
engage in herding or not. Instead, the interplay between herding and the
imitated lenders' prior success on the platform predicts loan outcomes. In
short, herds led by expert lenders tend to pick loans that do not default. We
discuss the implications of this under-explored aspect of herding for platform
designers, borrowers, and lenders. Our study advances collective intelligence
theories based on a case of high-stakes group decision-making online.
|
[{'version': 'v1', 'created': 'Thu, 22 Jun 2023 22:21:16 GMT'}]
|
2023-06-29
|
[array(['Dambanemuya', 'Henry K.', ''], dtype=object)
array(['Wachs', 'Johannes', ''], dtype=object)
array(['Horvát', 'Emőke-Ágnes', ''], dtype=object)]
|
17,951 |
1707.01493
|
Dario Trevisan
|
Martin Huesmann and Dario Trevisan
|
A Benamou-Brenier formulation of martingale optimal transport
| null | null | null | null |
math.PR math.AP math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a Benamou-Brenier formulation for the continuous-time martingale
optimal transport problem as a weak length relaxation of its discrete-time
counterpart. By the correspondence between classical martingale problems and
Fokker-Planck equations, we obtain an equivalent PDE formulation for which
basic properties such as existence, duality and geodesic equations can be
analytically studied, yielding corresponding results for the stochastic
formulation. In the one dimensional case, sufficient conditions for finiteness
of the cost are also given and a link between geodesics and porous medium
equations is partially investigated.
|
[{'version': 'v1', 'created': 'Wed, 5 Jul 2017 17:52:08 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Aug 2018 20:59:36 GMT'}]
|
2018-08-29
|
[array(['Huesmann', 'Martin', ''], dtype=object)
array(['Trevisan', 'Dario', ''], dtype=object)]
|
17,952 |
2008.12325
|
Ricard Ravell Rodr\'iguez
|
Micha{\l} Banacki, Ricard Ravell Rodr\'iguez and Pawe{\l} Horodecki
|
On the edge of the set of no-signaling assemblages
|
We extended the proof of the main theorem, made some changes in the
writing and changed the title
|
Phys. Rev. A 103, 052434 (2021)
|
10.1103/PhysRevA.103.052434
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Following recent advancements, we consider a scenario of multipartite
postquantum steering and general no-signaling assemblages. We introduce the
notion of the edge of the set of no-signaling assemblages and we present its
characterization. Next, we use this concept to construct witnesses for
no-signaling assemblages without an LHS model. Finally, in the simplest
nontrivial case of steering with two untrusted subsystems, we discuss the
possibility of quantum realization of assemblages on the edge. In particular,
for three-qubit states, we obtain a no-go type result, which states that it is
impossible to produce assemblage on the edge using measurements described by
POVMs as long as the rank of a given state is greater than or equal to 3.
|
[{'version': 'v1', 'created': 'Thu, 27 Aug 2020 18:29:57 GMT'}
{'version': 'v2', 'created': 'Thu, 4 Mar 2021 17:46:12 GMT'}]
|
2021-06-02
|
[array(['Banacki', 'Michał', ''], dtype=object)
array(['Rodríguez', 'Ricard Ravell', ''], dtype=object)
array(['Horodecki', 'Paweł', ''], dtype=object)]
|
17,953 |
hep-ph/0510421
|
Fredy Ochoa
|
A. Carcamo, R. Martinez and F. Ochoa
|
Z and Z' decays with and without FCNC in 331 models
|
33 pages, 6 figures, LaTeX2e
|
Phys.Rev.D73:035007,2006
|
10.1103/PhysRevD.73.035007
| null |
hep-ph
| null |
In the context of the 331 models, we consider constraints on the extra
neutral boson $Z^{\prime}$ predicted by the model, where three different quark
family assignments are identified. Using the ansatz of Matsuda as an specific
texture for the quark mass matrices, we obtain allowed regions associated with
the Z-Z' mixing angle, the mass of the $Z^{\prime}$ boson and the parameter
$\beta$ which determines different 331 models. The $Z_{1}$ and $Z_{2}$ decays
with and without flavor changing are also considered. The flavor changing
decays of the $Z_{1}$ boson into quarks at tree level are highly suppressed by
the $Z-Z^{\prime}$ mixing angle, obtaining the same order of magnitude as the
standard model prediction at one loop level. The $% Z_{2}$ decay widths are
calculated with and without flavor changing, where oblique radiative
corrections at one loop accounts for about $1%-4%$ deviations.
|
[{'version': 'v1', 'created': 'Mon, 31 Oct 2005 19:40:12 GMT'}
{'version': 'v2', 'created': 'Mon, 13 Feb 2006 23:07:43 GMT'}]
|
2014-11-18
|
[array(['Carcamo', 'A.', ''], dtype=object)
array(['Martinez', 'R.', ''], dtype=object)
array(['Ochoa', 'F.', ''], dtype=object)]
|
17,954 |
1704.03195
|
Enrico Valdinoci
|
Annalisa Cesaroni, Serena Dipierro, Matteo Novaga and Enrico Valdinoci
|
Minimizers for nonlocal perimeters of Minkowski type
|
To appear in Calc. Var. Partial Differential Equations
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a nonlocal perimeter functional inspired by the Minkowski content,
whose main feature is that it interpolates between the classical perimeter and
the volume functional. This problem is related by a generalized coarea formula
to a Dirichlet energy functional in which the energy density is the local
oscillation of a function.
These two nonlocal functionals arise in concrete applications, since the
nonlocal character of the problems and the different behaviors of the energy at
different scales allow the preservation of details and irregularities of the
image in the process of removing white noises, thus improving the quality of
the image without losing relevant features.
In this paper, we provide a series of results concerning existence, rigidity
and classification of minimizers, compactness results, isoperimetric
inequalities, Poincar\'e-Wirtinger inequalities and density estimates.
Furthermore, we provide the construction of planelike minimizers for this
generalized perimeter under a small and periodic volume perturbation.
|
[{'version': 'v1', 'created': 'Tue, 11 Apr 2017 08:39:18 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Mar 2018 09:13:42 GMT'}]
|
2018-03-06
|
[array(['Cesaroni', 'Annalisa', ''], dtype=object)
array(['Dipierro', 'Serena', ''], dtype=object)
array(['Novaga', 'Matteo', ''], dtype=object)
array(['Valdinoci', 'Enrico', ''], dtype=object)]
|
17,955 |
1910.00441
|
Nick Edelen
|
Nick Edelen and Luca Spolaor
|
Regularity of minimal surfaces near quadratic cones
|
34 pages, comments welcome
| null | null | null |
math.DG math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Hardt-Simon proved that every area-minimizing hypercone $\mathbf{C}$ having
only an isolated singularity fits into a foliation of $\mathbb{R}^{n+1}$ by
smooth, area-minimizing hypersurfaces asymptotic to $\mathbf{C}$. In this paper
we prove that if a stationary $n$-varifold $M$ in the unit ball $B_1 \subset
\mathbb{R}^{n+1}$ lies sufficiently close to a minimizing quadratic cone (for
example, the Simons' cone $\mathbf{C}^{3,3}$), then $\mathrm{spt} M \cap
B_{1/2}$ is a $C^{1,\alpha}$ perturbation of either the cone itself, or some
leaf of its associated foliation. In particular, we show that singularities
modeled on these cones determine the local structure not only of $M$, but of
any nearby minimal surface. Our result also implies the Bernstein-type result
of Simon-Solomon, which characterizes area-minimizing hypersurfaces asymptotic
to a quadratic cone as either the cone itself, or some leaf of the foliation.
|
[{'version': 'v1', 'created': 'Tue, 1 Oct 2019 14:26:56 GMT'}]
|
2019-10-02
|
[array(['Edelen', 'Nick', ''], dtype=object)
array(['Spolaor', 'Luca', ''], dtype=object)]
|
17,956 |
0906.2307
|
Mauro Cherubini
|
Mauro Cherubini, Rodrigo de Oliveira, and Nuria Oliver
|
Shopping Uncertainties in a Mobile and Social Context
|
Presented in the Late Breaking Results category of Pervasive 2009.
May 11-14, Nara, Japan. http://www.pervasive2009.org/
| null | null | null |
cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We conducted a qualitative user study with 77 consumers to investigate what
social aspects are relevant when supporting customers during their shopping
activities and particularly in situations when they are undecided. Twenty-five
respondents (32%) reported seeking extra information on web pages and forums,
in addition to asking their peers for advice (related to the nature of the item
to be bought). Moreover, from the remaining 52 subjects, only 6 (8%) were
confident enough to make prompt comparisons between items and an immediate
purchasing choice, while 17 respondents (22%) expressed the need for being away
from persuasive elements. The remaining 29 respondents (38%) reported having a
suboptimal strategy for making their shopping decisions (i.e. buying all items,
not buying, or choosing randomly). Therefore, the majority of our participants
(70% = 32% + 38%) had social and information needs when making purchasing
decisions. This result motivates the development of applications that would
allow consumers to ask shopping questions to their social network while
on-the-go.
|
[{'version': 'v1', 'created': 'Fri, 12 Jun 2009 13:47:46 GMT'}]
|
2009-06-15
|
[array(['Cherubini', 'Mauro', ''], dtype=object)
array(['de Oliveira', 'Rodrigo', ''], dtype=object)
array(['Oliver', 'Nuria', ''], dtype=object)]
|
17,957 |
1903.09897
|
Nikita Kolganov
|
A. O. Barvinsky, N. Kolganov, A. Kurov, D. Nesterov
|
Dynamics of the generalized unimodular gravity theory
|
20 pages, no figures
|
Phys. Rev. D 100, 023542 (2019)
|
10.1103/PhysRevD.100.023542
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Hamiltonian formalism of the generalized unimodular gravity theory, which
was recently suggested as a model of dark energy, is shown to be a complicated
example of constrained dynamical system. The set of its canonical constraints
has a bifurcation -- splitting of the theory into two branches differing by the
number and type of these constraints, one of the branches effectively
describing a gravitating perfect fluid with the time-dependent equation of
state, which can potentially play the role of dark energy in cosmology. The
first class constraints in this branch generate local gauge symmetries of the
Lagrangian action -- two spatial diffeomorphisms -- and rule out the temporal
diffeomorphism which does not have a realization in the form of the canonical
transformation on phase space of the theory and turns out to be either nonlocal
in time or violating boundary conditions at spatial infinity. As a consequence,
the Hamiltonian reduction of the model enlarges its physical sector from two
general relativistic modes to three degrees of freedom including the scalar
graviton. This scalar mode is free from ghost and gradient instabilities on the
Friedmann background in a wide class of models subject to a certain restriction
on time-dependent parameter $w$ of the dark fluid equation of state,
$p=w\varepsilon$. For a special family of models this scalar mode can be ruled
out even below the phantom divide line $w=-1$, but this line cannot be crossed
in the course of the cosmological expansion. This is likely to disable the
generalized unimodular gravity as a model of the phenomenologically consistent
dark energy scenario, but opens the prospects in inflation theory with a scalar
graviton playing the role of inflaton.
|
[{'version': 'v1', 'created': 'Sat, 23 Mar 2019 22:57:24 GMT'}]
|
2019-08-07
|
[array(['Barvinsky', 'A. O.', ''], dtype=object)
array(['Kolganov', 'N.', ''], dtype=object)
array(['Kurov', 'A.', ''], dtype=object)
array(['Nesterov', 'D.', ''], dtype=object)]
|
17,958 |
1311.0545
|
Anthony Morton
|
Anthony B. Morton
|
Throwing Darts at a Ruler: Unpacking the Intuition Behind Freiling's
Axiom of Symmetry
|
4 pages
| null | null | null |
math.HO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is well-known that the Continuum Hypothesis (CH) is independent of the
other axioms of Zermelo-Fraenkel set theory with choice (ZFC). This raises the
question of whether an intuitive justification exists for CH as an additional
axiom, or conversely whether it is more intuitive to deny CH. Freiling's Axiom
of Symmetry (AS) is one candidate for an intuitively justifiable axiom that,
when appended to ZFC, is equivalent to the denial of CH. The intuition relies
on a probabalistic argument, usually cast in terms of throwing random darts at
the real line, and has been defended by researchers as well as popular writers.
In this note, the intuitive argument is reviewed. Following William Abram, it
is suggested that while accepting CH leads directly to a counterexample to AS,
this is not necessarily fatal to our intuition. Instead, we suggest, it serves
to alert us to the error in a naive intuition that leaps too readily from the
near-certainty of individual events to near-certainty of a joint event.
|
[{'version': 'v1', 'created': 'Sun, 3 Nov 2013 23:50:04 GMT'}]
|
2013-11-05
|
[array(['Morton', 'Anthony B.', ''], dtype=object)]
|
17,959 |
1805.02328
|
Jiliang Jing
|
Weiping Yao, Chaohui Yang, Jiliang Jing
|
Holographic insulator/superconductor transition with exponential
nonlinear electrodynamics probed by entanglement entropy
|
15 pages, 6 figures
|
Eur. Phys. J. C. (2018) 78: 353
|
10.1140/epjc/s10052-018-5836-7
| null |
gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
From the viewpoint of holography, we study the behaviors of the entanglement
entropy in insulator/superconductor transition with exponential nonlinear
electrodynamics (ENE). We find that the entanglement entropy is a good probe to
the properties of the holographic phase transition. Both in the half space and
the belt space, the non-monotonic behavior of the entanglement entropy in
superconducting phase versus the chemical potential is general in this model.
Furthermore, the behavior of the entanglement entropy for the strip geometry
shows that the confinement/deconfinement phase transition appears in both
insulator and superconductor phases. And the critical width of the the
confinement/deconfinement phase transition depends on the chemical potential
and the exponential coupling term. More interestingly, the behaviors of the
entanglement entropy in their corresponding insulator phases are independent of
the exponential coupling factor but depends on the the width of the subsystem
$\mathcal{A}$.
|
[{'version': 'v1', 'created': 'Mon, 7 May 2018 03:04:54 GMT'}]
|
2018-05-23
|
[array(['Yao', 'Weiping', ''], dtype=object)
array(['Yang', 'Chaohui', ''], dtype=object)
array(['Jing', 'Jiliang', ''], dtype=object)]
|
17,960 |
0908.4140
|
Martin Genet
|
Martin Genet (LMT), Wenyi Yan, Thanh Tran-Cong
|
Investigation of a hydraulic impact: a technology in rock breaking
| null |
Archive of Applied Mechanics 79, 9 (2009) 825-841
|
10.1007/s00419-008-0256-z
| null |
physics.class-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The finite element method and dimensional analysis have been applied in the
present paper to study a hydraulic impact, which is utilized in a non-explosive
rock breaking technology in mining industry. The impact process of a high speed
piston on liquid water, previously introduced in a borehole drilled in rock, is
numerically simulated. The research is focused on the influences of all the
parameters involved in the technology on the largest principal stress in the
rock, which is considered as one of the key factors to break the rock. Our
detailed parametric investigation reveals that the variation of the isotropic
rock material properties, especially its density, has no significant influence
on the largest principal stress. The influences of the depth of the hole and
the depth of the water column are also very small. On the other hand,
increasing the initial kinetic energy of the piston can dramatically increase
the largest principal stress and the best way to increase the initial kinetic
energy of the piston is to increase its initial velocity. Results from the
current dimensional analysis can be applied to optimize this non-explosive rock
breaking technology.
|
[{'version': 'v1', 'created': 'Fri, 28 Aug 2009 06:38:31 GMT'}]
|
2015-05-14
|
[array(['Genet', 'Martin', '', 'LMT'], dtype=object)
array(['Yan', 'Wenyi', ''], dtype=object)
array(['Tran-Cong', 'Thanh', ''], dtype=object)]
|
17,961 |
2108.01407
|
Ana Kostovska
|
Ana Kostovska, Matej Petkovi\'c, Toma\v{z} Stepi\v{s}nik, Luke Lucas,
Timothy Finn, Jos\'e Mart\'inez-Heras, Pan\v{c}e Panov, Sa\v{s}o
D\v{z}eroski, Alessandro Donati, Nikola Simidjievski, Dragi Kocev
|
GalaxAI: Machine learning toolbox for interpretable analysis of
spacecraft telemetry data
| null |
8th IEEE International Conference on Space Mission Challenges for
Information Technology (SMC-IT 2021)
| null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present GalaxAI - a versatile machine learning toolbox for efficient and
interpretable end-to-end analysis of spacecraft telemetry data. GalaxAI employs
various machine learning algorithms for multivariate time series analyses,
classification, regression and structured output prediction, capable of
handling high-throughput heterogeneous data. These methods allow for the
construction of robust and accurate predictive models, that are in turn applied
to different tasks of spacecraft monitoring and operations planning. More
importantly, besides the accurate building of models, GalaxAI implements a
visualisation layer, providing mission specialists and operators with a full,
detailed and interpretable view of the data analysis process. We show the
utility and versatility of GalaxAI on two use-cases concerning two different
spacecraft: i) analysis and planning of Mars Express thermal power consumption
and ii) predicting of INTEGRAL's crossings through Van Allen belts.
|
[{'version': 'v1', 'created': 'Tue, 3 Aug 2021 10:45:20 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Aug 2021 15:01:21 GMT'}]
|
2021-08-10
|
[array(['Kostovska', 'Ana', ''], dtype=object)
array(['Petković', 'Matej', ''], dtype=object)
array(['Stepišnik', 'Tomaž', ''], dtype=object)
array(['Lucas', 'Luke', ''], dtype=object)
array(['Finn', 'Timothy', ''], dtype=object)
array(['Martínez-Heras', 'José', ''], dtype=object)
array(['Panov', 'Panče', ''], dtype=object)
array(['Džeroski', 'Sašo', ''], dtype=object)
array(['Donati', 'Alessandro', ''], dtype=object)
array(['Simidjievski', 'Nikola', ''], dtype=object)
array(['Kocev', 'Dragi', ''], dtype=object)]
|
17,962 |
2303.01865
|
Alexander A. Osipov
|
A. A. Osipov
|
$1/N_c$ Nambu -- Jona-Lasinio model: $\pi^0$, $\eta$ and $\eta'$ mesons
|
13 pages
| null | null | null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We continue to study the properties of the light pseudoscalar nonet within
the combined framework of Nambu -- Jona-Lasinio model and $1/N_c$ expansion,
assuming that current quark masses count of order $\mathcal O(1/N_c)$. The
masses, mixing angles and decay constants of the $\pi^0$, $\eta$ and $\eta'$
are calculated. The role of the $U(1)_A$ anomaly is emphasized. It is shown
that the gluon anomaly suppresses the leading order effects that might
otherwise be substantial for the $\eta\to 3\pi$ amplitude. A detailed
comparison with the known results of $1/N_c$ chiral perturbation theory is
made.
|
[{'version': 'v1', 'created': 'Fri, 3 Mar 2023 11:41:31 GMT'}]
|
2023-03-06
|
[array(['Osipov', 'A. A.', ''], dtype=object)]
|
17,963 |
1706.04759
|
Alexander Senier
|
Alexander Senier and Martin Beck and Thorsten Strufe
|
PrettyCat: Adaptive guarantee-controlled software partitioning of
security protocols
|
9 pages
| null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One single error can result in a total compromise of all security in today's
large, monolithic software. Partitioning of software can help simplify
code-review and verification, whereas isolated execution of software-components
limits the impact of incorrect implementations. However, existing application
partitioning techniques are too expensive, too imprecise, or involve unsafe
manual steps. An automatic, yet safe, approach to dissect security protocols
into component-based systems is not available. We present a method and toolset
to automatically segregate security related software into an indefinite number
of partitions, based on the security guarantees required by the deployed
cryptographic building blocks. As partitioning imposes communication overhead,
we offer a range of sound performance optimizations. Furthermore, by applying
our approach to the secure messaging protocol OTR, we demonstrate its
applicability and achieve a significant reduction of the trusted computing
base. Compared to a monolithic implementation, only 29% of the partitioned
protocol requires confidentiality guarantees with a process overhead comparable
to common sandboxing techniques.
|
[{'version': 'v1', 'created': 'Thu, 15 Jun 2017 07:32:12 GMT'}]
|
2017-06-16
|
[array(['Senier', 'Alexander', ''], dtype=object)
array(['Beck', 'Martin', ''], dtype=object)
array(['Strufe', 'Thorsten', ''], dtype=object)]
|
17,964 |
1405.3237
|
Alejandra Garrido
|
Alejandra Garrido
|
On the congruence subgroup problem for branch groups
|
9 pages, no figures; minor changes in accordance with referee report,
exposition improved
|
Isr. J. Math. (2016) 216: 1
|
10.1007/s11856-016-1402-x
| null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We answer a question of Bartholdi, Siegenthaler and Zalesskii, showing that
the congruence subgroup problem for branch groups is independent of the branch
action on a tree. We prove that the congruence topology of a branch group is
determined by the group; specifically, by its structure graph, an object first
introduced by Wilson. We also give a more natural definition of this graph.
|
[{'version': 'v1', 'created': 'Tue, 13 May 2014 17:23:36 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Jul 2014 10:29:59 GMT'}]
|
2016-10-19
|
[array(['Garrido', 'Alejandra', ''], dtype=object)]
|
17,965 |
astro-ph/0403223
|
Andrew J. Bunker
|
A. J. Bunker (1 and 2), E. R. Stanway (2), R. S. Ellis (3), R. G.
McMahon (2) ((1) University of Exeter, (2) Institute of Astronomy, Cambridge,
(3) Caltech Astronomy)
|
The Star Formation Rate of the Universe at z~6 from the Hubble Ultra
Deep Field
|
Accepted for publication in MNRAS. Minor changes to match accepted
version
| null |
10.1111/j.1365-2966.2004.08326.x
| null |
astro-ph
| null |
We determine the abundance of i'-band drop-outs in the recently-released
HST/ACS Hubble Ultra Deep Field (UDF). Since the majority of these sources are
likely to be z~6 galaxies whose flux decrement between the F775W i'-band and
F850LP z'-band arises from Lyman-alpha absorption, the number of detected
candidates provides a valuable upper limit to the unextincted star formation
rate at this redshift. We demonstrate that the increased depth of UDF enables
us to reach an 8-sigma limiting magnitude of z'(AB)=28.5 (equivalent to
1.5/h{70}^2 M_sun/yr at z=6, or 0.1 L*(UV) for the z~3 U-drop population),
permitting us to address earlier ambiguities arising from the unobserved form
of the luminosity function. We identify 54 galaxies (and only one star) at
z'(AB)<28.5 with (i'-z')>1.3 over the deepest 11arcmin^2 portion of the UDF
field. The characteristic luminosity (L*) is consistent with values observed at
z~3. The faint end slope (alpha) is less well constrained, but is consistent
with only modest evolution. The main change appears to be in the number density
(Phi*). Specifically, and regardless of possible contamination from cool stars
and lower redshift sources, the UDF data support our previous result that the
star formation rate at z~6 was at least x6 LESS than at z~3 (Stanway, Bunker &
McMahon 2003). This declining comoving star formation rate (0.005
h{70}M_sun/yr/Mpc^3 at z~6 for a Salpeter IMF) poses an interesting challenge
for models which suggest that L>0.1L* star forming galaxies at z~6 reionized
the universe. The
short-fall in ionizing photons might be alleviated by galaxies
fainter than our limit, or a radically different IMF.
Alternatively, the bulk of reionization might have occurred at z>>6.
|
[{'version': 'v1', 'created': 'Wed, 10 Mar 2004 19:06:13 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Apr 2004 18:52:22 GMT'}
{'version': 'v3', 'created': 'Mon, 20 Sep 2004 19:58:51 GMT'}]
|
2009-11-10
|
[array(['Bunker', 'A. J.', '', '1 and 2'], dtype=object)
array(['Stanway', 'E. R.', ''], dtype=object)
array(['Ellis', 'R. S.', ''], dtype=object)
array(['McMahon', 'R. G.', ''], dtype=object)]
|
17,966 |
1102.0683
|
Michel Fliess
|
Michel Fliess (LIX), C\'edric Join (INRIA Saclay - Ile de France,
CRAN), Fr\'ed\'eric Hatt
|
Volatility made observable at last
| null |
3\`emes Journ\'ees Identification et Mod\'elisation
Exp\'erimentale, Douai : France (2011)
| null | null |
q-fin.CP cs.CE q-fin.ST
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Cartier-Perrin theorem, which was published in 1995 and is expressed in
the language of nonstandard analysis, permits, for the first time perhaps, a
clear-cut mathematical definition of the volatility of a financial asset. It
yields as a byproduct a new understanding of the means of returns, of the beta
coefficient, and of the Sharpe and Treynor ratios. New estimation techniques
from automatic control and signal processing, which were already successfully
applied in quantitative finance, lead to several computer experiments with some
quite convincing forecasts.
|
[{'version': 'v1', 'created': 'Thu, 3 Feb 2011 13:46:49 GMT'}]
|
2011-02-07
|
[array(['Fliess', 'Michel', '', 'LIX'], dtype=object)
array(['Join', 'Cédric', '', 'INRIA Saclay - Ile de France,\n CRAN'],
dtype=object)
array(['Hatt', 'Frédéric', ''], dtype=object)]
|
17,967 |
2212.14535
|
Wen-Cong Gan
|
Wen-Cong Gan, Xiao-Mei Kuang, Zhen-Hao Yang, Yungui Gong, Anzhong
Wang, Bin Wang
|
Non-existence of quantum black hole horizons in the improved dynamics
approach
|
revtex4-2, 6 figures, and two tables, v2: typos corrected, references
added, v3:Additional analyses were provided, including new references and
figures, while the conclusions remain the same
| null | null | null |
gr-qc astro-ph.GA hep-ph hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we study the quantum geometric effects near the locations that
black hole horizons used to appear in Einstein's classical theory within the
framework of the improved dynamic approach, in which the two polymerization
parameters of the Kantowski-Sachs spacetime are functions of the phase space
variables. Our detailed analysis shows that the effects are so strong that
black hole horizons of the effective quantum theory do not exist any longer,
and the corresponding Kantowski-Sachs model now describes the entire spacetime
of the trapped region, instead of being only the internal region of a black
hole, as it is usually expected in loop quantum gravity.
|
[{'version': 'v1', 'created': 'Fri, 30 Dec 2022 03:36:41 GMT'}
{'version': 'v2', 'created': 'Tue, 10 Jan 2023 03:10:17 GMT'}
{'version': 'v3', 'created': 'Sun, 5 Feb 2023 02:45:38 GMT'}]
|
2023-02-07
|
[array(['Gan', 'Wen-Cong', ''], dtype=object)
array(['Kuang', 'Xiao-Mei', ''], dtype=object)
array(['Yang', 'Zhen-Hao', ''], dtype=object)
array(['Gong', 'Yungui', ''], dtype=object)
array(['Wang', 'Anzhong', ''], dtype=object)
array(['Wang', 'Bin', ''], dtype=object)]
|
17,968 |
2008.03682
|
Adam Ball
|
Adam Ball and Noah Miller
|
Accelerating Black Hole Thermodynamics with Boost Time
| null | null |
10.1088/1361-6382/ac0766
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We derive a thermodynamic first law for the electrically charged C-metric
with vanishing cosmological constant. This spacetime describes a pair of
identical accelerating black holes each pulled by a cosmic string. Treating the
"boost time" of this spacetime as the canonical time, we find a thermodynamic
first law in which every term has an unambiguous physical meaning. We then show
how this first law can be derived using Noetherian methods in the covariant
phase space formalism. We argue that the area of the acceleration horizon
contributes to the entropy and that the appropriate notion of energy of this
spacetime is a "boost mass", which vanishes identically. The recovery of the
Reissner-Nordstrom first law in the limit of small string tension is also
demonstrated. Finally, we compute the action of the Euclidean section of the
C-metric and show it agrees with the thermodynamic grand potential, providing
an independent confirmation of the validity of our first law. We also briefly
speculate on the significance of firewalls in this spacetime.
|
[{'version': 'v1', 'created': 'Sun, 9 Aug 2020 07:54:13 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Jun 2021 22:23:49 GMT'}]
|
2021-08-11
|
[array(['Ball', 'Adam', ''], dtype=object)
array(['Miller', 'Noah', ''], dtype=object)]
|
17,969 |
cond-mat/0402053
|
Luciano Abreu
|
L. M. Abreu, C. de Calan and A. P. C. Malbouisson
|
Halperin-Lubensky-Ma effect in type-I superconducting films
|
4 pages, RevTex 4
|
Phys.Lett. A322 (2004) 111-116; Erratum-ibid. A332 (2004) 153-155
|
10.1016/j.physleta.2003.12.055
| null |
cond-mat.supr-con hep-th
| null |
In this note we employ concurrently techniques of generalized
$zeta$-functions and compactification methods introduced in previous
publications, to study the Halperin-Lubensky-Ma theory of induced weak
first-order phase transitions applied to type-I superconducting films. We
obtain closed formulas to the critical temperature and to the size temperature
as functions of the film thickness.
|
[{'version': 'v1', 'created': 'Mon, 2 Feb 2004 21:14:36 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Sep 2004 12:47:32 GMT'}]
|
2009-11-10
|
[array(['Abreu', 'L. M.', ''], dtype=object)
array(['de Calan', 'C.', ''], dtype=object)
array(['Malbouisson', 'A. P. C.', ''], dtype=object)]
|
17,970 |
2104.03884
|
Mao Fabrice Djete
|
Mao Fabrice Djete and Nizar Touzi
|
Mean Field Game of Mutual Holding
| null | null | null | null |
math.OC math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
We introduce a mean field model for optimal holding of a representative agent
of her peers as a natural expected scaling limit from the corresponding
$N-$agent model. The induced mean field dynamics appear naturally in a form
which is not covered by standard McKean-Vlasov stochastic differential
equations. We study the corresponding mean field game of mutual holding in the
absence of common noise. Our first main result provides an explicit equilibrium
of this mean field game, defined by a bang--bang control consisting in holding
those competitors with positive drift coefficient of their dynamic value. We
next use this mean field game equilibrium to construct (approximate) Nash
equilibria for the corresponding $N$--player game. We also provide some
numerical illustrations of our mean field game equilibrium which highlight some
unexpected effects induced by our results.
|
[{'version': 'v1', 'created': 'Thu, 8 Apr 2021 16:46:41 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Jul 2021 10:08:45 GMT'}
{'version': 'v3', 'created': 'Mon, 4 Apr 2022 17:48:06 GMT'}]
|
2022-04-05
|
[array(['Djete', 'Mao Fabrice', ''], dtype=object)
array(['Touzi', 'Nizar', ''], dtype=object)]
|
17,971 |
gr-qc/9703044
|
Alejandro Corichi
|
Christopher Beetle and Alejandro Corichi
|
Bibliography of publications related to Classical and Quantum Gravity in
terms of Connection and Loop Variables
|
25 pages, latex file
| null | null | null |
gr-qc
| null |
This bibliography attempts to give a comprehensive overview of all the
literature related to the Ashtekar connection and the Rovelli-Smolin loop
variables. The original version was compiled by Peter H\"ubner in 1989, and it
has been subsequently updated by Gabriela Gonzalez, Bernd Br\"ugmann, Monica
Pierri, Troy Schilling, Alejandro Corichi and Christopher Beetle. Information
about additional literature, new preprints, and especially corrections are
always welcome.
|
[{'version': 'v1', 'created': 'Tue, 18 Mar 1997 01:07:33 GMT'}]
|
2007-05-23
|
[array(['Beetle', 'Christopher', ''], dtype=object)
array(['Corichi', 'Alejandro', ''], dtype=object)]
|
17,972 |
cond-mat/0412361
|
Paul van der Schoot
|
Nazar Sushko and Paul van der Schoot
|
Comment on "Large Difference in the Elastic Properties of fcc and hcp
Hard-Sphere Crystals"
|
7 pages, 5 figures
| null |
10.1103/PhysRevE.72.067104
| null |
cond-mat.soft cond-mat.stat-mech
| null |
As is well known, hard-sphere crystals of the fcc and hcp type differ very
little in their thermodynamic properties. Nonetheless, recent computer
simulations by Pronk and Frenkel indicate that the elastic response to
mechanical deformation of the two types of crystal should be quite different.
By invoking a geometrical argument put forward by R. Martin some time ago, we
suggest that this is largely due to the different symmetries of the fcc and hcp
crystal structures. Indeed, we find that elastic constants obtained by means of
computer simulations for the fcc hard-sphere crystal can be mapped onto the
equivalent ones of the hcp crystal to very high accuracy. The same procedure
applied to density functional theoretical predictions for the elastic
properties of the fcc hard-sphere crystal also produces remarkably accurate
predictions for those of the hcp hard-sphere crystal.
|
[{'version': 'v1', 'created': 'Tue, 14 Dec 2004 12:49:17 GMT'}]
|
2013-05-29
|
[array(['Sushko', 'Nazar', ''], dtype=object)
array(['van der Schoot', 'Paul', ''], dtype=object)]
|
17,973 |
2206.13285
|
Francis Bach
|
Francis Bach (SIERRA)
|
Sum-of-Squares Relaxations for Information Theory and Variational
Inference
| null | null | null | null |
cs.IT cs.LG math.IT math.OC stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider extensions of the Shannon relative entropy, referred to as
f-divergences. Three classical related computational problems are typically
associated with these divergences: (a) estimation from moments, (b) computing
normalizing integrals, and (c) variational inference in probabilistic models.
These problems are related to one another through convex duality, and for all
them, there are many applications throughout data science, and we aim for
computationally tractable approximation algorithms that preserve properties of
the original problem such as potential convexity or monotonicity. In order to
achieve this, we derive a sequence of convex relaxations for computing these
divergences from non-centered covariance matrices associated with a given
feature vector: starting from the typically non-tractable optimal lower-bound,
we consider an additional relaxation based on "sums-of-squares", which is is
now computable in polynomial time as a semidefinite program, as well as further
computationally more efficient relaxations based on spectral information
divergences from quantum information theory. For all of the tasks above, beyond
proposing new relaxations, we derive tractable algorithms based on augmented
Lagrangians and first-order methods, and we present illustrations on
multivariate trigonometric polynomials and functions on the Boolean hypercube.
|
[{'version': 'v1', 'created': 'Mon, 27 Jun 2022 13:22:40 GMT'}
{'version': 'v2', 'created': 'Mon, 29 Aug 2022 12:35:08 GMT'}]
|
2022-08-30
|
[array(['Bach', 'Francis', '', 'SIERRA'], dtype=object)]
|
17,974 |
hep-th/9305127
|
Weston Robert
|
A.H. Bougourzi and Robert A. Weston
|
Vertex Operators and Matrix Elements of $U_q(su(2)_k)$ via Bosonization
|
20 pages, LaTex. Minor changes
|
Int.J.Mod.Phys.A9:4431-4448,1994
|
10.1142/S0217751X9400176X
| null |
hep-th
| null |
We construct bosonized vertex operators (VOs) and conjugate vertex operators
(CVOs) of $U_q(su(2)_k)$ for arbitrary level $k$ and representation $j\leq
k/2$. Both are obtained directly as two solutions of the defining condition of
vertex operators - namely that they intertwine $U_q(su(2)_k)$ modules. We
construct the screening charge and present a formula for the n-point function.
Specializing to $j=1/2$ we construct all VOs and CVOs explicitly. The existence
of the CVO allows us to place the calculation of the two-point function on the
same footing as $k=1$; that is, it is obtained without screening currents and
involves only a single integral from the CVO. This integral is evaluated and
the resulting function is shown to obey the q-KZ equation and to reduce simply
to both the expected $k=1$ and $q=1$ limits.
|
[{'version': 'v1', 'created': 'Tue, 25 May 1993 02:26:35 GMT'}
{'version': 'v2', 'created': 'Thu, 27 May 1993 01:27:23 GMT'}]
|
2010-11-01
|
[array(['Bougourzi', 'A. H.', ''], dtype=object)
array(['Weston', 'Robert A.', ''], dtype=object)]
|
17,975 |
1006.1600
|
Atindra Nath Pal
|
Atindra Nath Pal, Ageeth A. Bol, and Arindam Ghosh
|
Large low-frequency resistance noise in chemical vapor deposited
graphene
|
4 pages, 4 figures
|
Applied Physics Letter, 97, 133504, 2010
|
10.1063/1.3493655
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report a detailed investigation of resistance noise in single layer
graphene films on Si/SiO$_2$ substrates obtained by chemical vapor deposition
(CVD) on copper foils. We find that noise in these systems to be rather large,
and when expressed in the form of phenomenological Hooge equation, it
corresponds to Hooge parameter as large as $0.1 - 0.5$. We also find the
variation in the noise magnitude with the gate voltage (or carrier density) and
temperature to be surprisingly weak, which is also unlike the behavior of noise
in other forms of graphene, in particular those from exfoliation.
|
[{'version': 'v1', 'created': 'Tue, 8 Jun 2010 16:25:55 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jun 2010 06:32:55 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Oct 2010 17:45:00 GMT'}]
|
2010-10-06
|
[array(['Pal', 'Atindra Nath', ''], dtype=object)
array(['Bol', 'Ageeth A.', ''], dtype=object)
array(['Ghosh', 'Arindam', ''], dtype=object)]
|
17,976 |
0706.1330
|
Mensur Omerbashich
|
M. Omerbashich
|
Note on: Considering the Case for Biodiversity Cycles: Reexamining the
Evidence for Periodicity in the Fossil Record, by Lieberman and Melott, arXiv
preprint 0704.2896
|
A one-page note. For the supplementary information for this note,
including the cited Reply and Errata, see math-ph/0608014
| null | null | null |
q-bio.PE astro-ph physics.geo-ph
| null |
Lieberman and Melott built their recent arXiv preprint 0704.2896 on my
published paper and (a preprint of) a subsequent comment by Liebermans
associate Cornette. But had this group waited for the Cornette comment to
actually appear in print together with the expected Reply, they would have
learned that his comment exposes Cornettes confusion that likely was due to
journal misprint of my figure. Thus 0704.2896 is baseless. Despite receiving
the extended Reply with Errata, these authors still fail to recognize that
detrending of paleontological records-which they erroneously promote as a
must-is an arbitrary rather than a universal operation.
|
[{'version': 'v1', 'created': 'Sat, 9 Jun 2007 23:19:27 GMT'}]
|
2007-06-12
|
[array(['Omerbashich', 'M.', ''], dtype=object)]
|
17,977 |
0901.1232
|
Sandy S. C. Law
|
Sandy S. C. Law
|
Neutrino Models and Leptogenesis
|
PhD thesis submitted for examination, 222 pages, coverpage graphics
have been removed to reduce file size
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Neutrino properties can play a crucial role in determining the
matter-antimatter asymmetry of the universe if thermal leptogenesis is the
correct solution to the baryogenesis problem. Owing to this, the study of
neutrino models goes beyond the mere purpose of generating tiny neutrino
masses, and it is natural to incorporate the puzzle of the cosmic baryon
asymmetry. To this end, we have investigated several different extensions of
the neutrino model based on the type I seesaw mechanism with particular
emphasis on their leptogenesis implications.
|
[{'version': 'v1', 'created': 'Fri, 9 Jan 2009 12:50:37 GMT'}]
|
2009-01-12
|
[array(['Law', 'Sandy S. C.', ''], dtype=object)]
|
17,978 |
1805.04656
|
Yongwei Huang
|
Yongwei Huang, Sergiy A. Vorobyov
|
An Inner SOCP Approximate Algorithm for Robust Adaptive Beamforming for
General-Rank Signal Model
| null | null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The worst-case robust adaptive beamforming problem for general-rank signal
model is considered. Its formulation is to maximize the worst-case
signal-to-interference-plus-noise ratio (SINR), incorporating a positive
semidefinite constraint on the actual covariance matrix of the desired signal.
In the literature, semidefinite program (SDP) techniques, together with others,
have been applied to approximately solve this problem. Herein an inner
second-order cone program (SOCP) approximate algorithm is proposed to solve it.
In particular, a sequence of SOCPs are constructed and solved, while the SOCPs
have the nondecreasing optimal values and converge to a locally optimal value
(it is in fact a globally optimal value through our extensive simulations). As
a result, our algorithm does not use computationally heavy SDP relaxation
technique. To validate our inner approximation results, simulation examples are
presented, and they demonstrate the improved performance of the new robust
beamformer in terms of the averaged cpu-time (indicating how fast the
algorithms converge) in a high signal-to-noise region.
|
[{'version': 'v1', 'created': 'Sat, 12 May 2018 05:18:35 GMT'}]
|
2018-05-15
|
[array(['Huang', 'Yongwei', ''], dtype=object)
array(['Vorobyov', 'Sergiy A.', ''], dtype=object)]
|
17,979 |
2107.07011
|
Nicola Anselmi
|
Marco Salucci, Nicola Anselmi, Marco Donald Migliore, and Andrea Massa
|
A Bayesian Compressive Sensing Approach to Robust Near-Field Antenna
Characterization
|
Submitted to IEEE
| null |
10.1109/TAP.2022.3177528
| null |
cs.IT eess.SP math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A novel probabilistic sparsity-promoting method for robust near-field (NF)
antenna characterization is proposed. It leverages on the
measurements-by-design (MebD) paradigm and it exploits some a-priori
information on the antenna under test (AUT) to generate an over-complete
representation basis. Accordingly, the problem at hand is reformulated in a
compressive sensing (CS) framework as the retrieval of a maximally-sparse
distribution (with respect to the overcomplete basis) from a reduced set of
measured data and then it is solved by means of a Bayesian strategy.
Representative numerical results are presented to, also comparatively, assess
the effectiveness of the proposed approach in reducing the "burden/cost" of the
acquisition process as well as to mitigate (possible) truncation errors when
dealing with space-constrained probing systems.
|
[{'version': 'v1', 'created': 'Wed, 14 Jul 2021 21:20:32 GMT'}]
|
2022-10-26
|
[array(['Salucci', 'Marco', ''], dtype=object)
array(['Anselmi', 'Nicola', ''], dtype=object)
array(['Migliore', 'Marco Donald', ''], dtype=object)
array(['Massa', 'Andrea', ''], dtype=object)]
|
17,980 |
1212.1816
|
Erwin Mi\~na-D\'iaz
|
Peter Dragnev, Erwin Mi\~na-D\'iaz, and Michael Northington V
|
Asymptotics of Carleman polynomials for level curves of the inverse of a
shifted Zhukovsky transformation
|
18 pages, 3 figures
| null | null | null |
math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper complements the recent investigation of \cite{DM} on the
asymptotic behavior of polynomials orthogonal over the interior of an analytic
Jordan curve $L$. We study the specific case of $L=\{z= w-1 +(w-1)^{-1},\
|w|=R\}$, for some $R>2$, providing an example that exhibits the new features
discovered in \cite{DM}, and for which the asymptotic behavior of the
orthogonal polynomials is established over the entire domain of orthogonality.
Surprisingly, this variation of the classical example of the ellipse turns out
to be quite sophisticated. After properly normalizing the corresponding
orthonormal polynomials $p_n$, $n=0,1,...$, and on certain critical subregion
of the orthogonality domain, a subsequence $\{p_{n_k}\}$ converges if and only
if $\log_{\mu^4}(n_k)$ converges modulo 1 ($\mu$ being an important quantity
associated to $L$). As a consequence, the limiting points of the sequence
$\{p_n\}$ form a one parameter family of functions, the parameter's range being
the interval $[0,1)$. The polynomials $p_n$ are much influenced by a certain
integrand function, the explained behavior being the result of this integrand
having a nonisolated singularity that is a cluster point of poles. The nature
of this singularity sparks purely from geometric considerations, as opposed to
the more common situation where the critical singularities come from the
orthogonality weight.
|
[{'version': 'v1', 'created': 'Sat, 8 Dec 2012 16:51:06 GMT'}]
|
2012-12-11
|
[array(['Dragnev', 'Peter', ''], dtype=object)
array(['Miña-Díaz', 'Erwin', ''], dtype=object)
array(['Northington', 'Michael', 'V'], dtype=object)]
|
17,981 |
2303.12939
|
Marie Kratz
|
Michel Dacorogna and Marie Kratz
|
Managing Cyber Risk, a Science in the Making
|
28 pages, 3 figures, 2 tables
| null | null | null |
cs.CR
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Not a day goes by without news about a cyber attack. Fear spreads out and
lots of wrong ideas circulate. This survey aims at showing how all these
uncertainties about cyber can be transformed into manageable risk. After
reviewing the main characteristics of cyber risk, we consider the three layers
of cyber space: hardware, software and psycho-cognitive layer. We ask ourselves
how is this risk different from others, how modelling has been tackled and
needs to evolve, and what are the multi-facetted aspects of cyber risk
management. This wide exploration pictures a science in the making and points
out the questions to be solved for building a resilient society.
|
[{'version': 'v1', 'created': 'Sun, 5 Feb 2023 13:09:17 GMT'}]
|
2023-03-24
|
[array(['Dacorogna', 'Michel', ''], dtype=object)
array(['Kratz', 'Marie', ''], dtype=object)]
|
17,982 |
1504.05960
|
Szymon Kozlowski
|
Szymon Koz{\l}owski (Warsaw University Observatory)
|
Empirical Conversions of Broad-Band Optical and Infrared Magnitudes to
Monochromatic Continuum Luminosities for Active Galactic Nuclei
|
15 pages, 3 figures, full tables included in the source file, online
calculator provided at http://http://www.astrouw.edu.pl/~simkoz/AGNcalc/
|
Acta Astronomica, 65, 251 (2015)
| null | null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We use public data for 105783 quasars from The Sloan Digital Sky Survey
(SDSS) Data Release 7 (DR7) that include spectral monochromatic luminosities at
5100\AA, 3000\AA, and 1350\AA, and the corresponding observed broad-band ugriz,
VRI (converted), JHK and WISE magnitudes, and derive
broad-band-to-monochromatic luminosity ratios independent of a cosmological
model. The ratios span the redshift range of z=0.1-4.9 and may serve as a proxy
for measuring the bolometric luminosity, broad line region (BLR) radii and/or
black hole masses, whenever flux-calibrated spectra are unavailable or the
existing spectra have low signal-to-noise ratios. They are provided both in
tabular and parametric form.
|
[{'version': 'v1', 'created': 'Wed, 22 Apr 2015 20:00:41 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Oct 2015 02:33:00 GMT'}]
|
2015-10-30
|
[array(['Kozłowski', 'Szymon', '', 'Warsaw University Observatory'],
dtype=object) ]
|
17,983 |
1711.04642
|
Sadek Bouroubi
|
Nedjmeeddine Kantour, Sadek Bouroubi
|
Cryptanalysis of Merkle-Hellman cipher using parallel genetic algorithm
| null | null | null | null |
cs.CR cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In 1976, Whitfield Diffie and Martin Hellman introduced the public key
cryptography or asymmetric cryptography standards. Two years later, an
asymmetric cryptosystem was published by Ralph Merkle and Martin Hellman called
MH, based on a variant of knapsack problem known as the subset-sum problem
which is proven to be NP-hard. Furthermore, over the last four decades,
Metaheuristics have achieved a remarkable progress in solving NP-hard
optimization problems. However, the conception of these methods raises several
challenges, mainly the adaptation and the parameters setting. In this paper, we
propose a Parallel Genetic Algorithm (PGA) adapted to explore effectively the
search space of considerable size in order to break the MH cipher. Experimental
study is included, showing the performance of the proposed attacking scheme and
finally concluding with a comparison with the LLL algorithm attack.
|
[{'version': 'v1', 'created': 'Mon, 13 Nov 2017 15:42:03 GMT'}]
|
2017-11-15
|
[array(['Kantour', 'Nedjmeeddine', ''], dtype=object)
array(['Bouroubi', 'Sadek', ''], dtype=object)]
|
17,984 |
hep-ph/9808456
|
Fornengo Nicolao
|
A. Bottino (1), F. Donato (1), N. Fornengo (1) and S. Scopel (2) ((1)
Universita' di Torino and INFN, Sezione di Torino, Italy, (2) Universidad de
Zaragoza, Spain and INFN)
|
Neutralino properties in the light of a further indication of an annual
modulation effect in WIMP direct search
|
15 pages, ReVTeX, 9 figures (included as PS files)
|
Phys.Rev.D59:095003,1999
|
10.1103/PhysRevD.59.095003
|
DFTT 41/98
|
hep-ph astro-ph
| null |
We demonstrate that the further indication of a possible annual modulation
effect, singled out by the DAMA/NaI experiment for WIMP direct detection, is
widely compatible with an interpretation in terms of a relic neutralino as the
major component of dark matter in the Universe. We discuss the supersymmetric
features of this neutralino in the Minimal Supersymmetric extension of the
Standard Model (MSSM) and their implications for searches at accelerators.
|
[{'version': 'v1', 'created': 'Fri, 28 Aug 1998 15:57:31 GMT'}]
|
2008-11-26
|
[array(['Bottino', 'A.', ''], dtype=object)
array(['Donato', 'F.', ''], dtype=object)
array(['Fornengo', 'N.', ''], dtype=object)
array(['Scopel', 'S.', ''], dtype=object)]
|
17,985 |
1004.5596
|
Alberto Diez-Tejedor
|
Cristian Armendariz-Picon, Alberto Diez-Tejedor and Riccardo Penco
|
Effective Theory Approach to the Spontaneous Breakdown of Lorentz
Invariance
|
45 pages, no figures.
|
JHEP 1010:079,2010
|
10.1007/JHEP10(2010)079
| null |
hep-ph astro-ph.CO gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We generalize the coset construction of Callan, Coleman, Wess and Zumino to
theories in which the Lorentz group is spontaneously broken down to one of its
subgroups. This allows us to write down the most general low-energy effective
Lagrangian in which Lorentz invariance is non-linearly realized, and to explore
the consequences of broken Lorentz symmetry without having to make any
assumptions about the mechanism that triggers the breaking. We carry out the
construction both in flat space, in which the Lorentz group is a global
spacetime symmetry, and in a generally covariant theory, in which the Lorentz
group can be treated as a local internal symmetry. As an illustration of this
formalism, we construct the most general effective field theory in which the
rotation group remains unbroken, and show that the latter is just the
Einstein-aether theory.
|
[{'version': 'v1', 'created': 'Fri, 30 Apr 2010 19:27:16 GMT'}]
|
2015-03-17
|
[array(['Armendariz-Picon', 'Cristian', ''], dtype=object)
array(['Diez-Tejedor', 'Alberto', ''], dtype=object)
array(['Penco', 'Riccardo', ''], dtype=object)]
|
17,986 |
nlin/0307053
|
Dragomir Neshev
|
Dragomir Neshev, Andrey A. Sukhorukov, Yuri S. Kivshar, and Wieslaw
Krolikowski
|
Observation of transverse instabilities in optically-induced lattices
|
three pages, three figures
|
Opt. Lett. 29, 259-262 (2004)
|
10.1364/OL.29.000259
| null |
nlin.PS physics.optics
| null |
We study experimentally the Bloch-wave instabilities in optically-induced
lattices. We reveal two different instability scenarios associated with either
the transverse modulational instability of a single Bloch wave, or the
nonlinear inter-band coupling between different Bloch waves. These effects are
compared with the transverse instability in homogeneous media, and it is shown
that the periodic modulation of the refractive index greatly enhances the
transverse instability.
|
[{'version': 'v1', 'created': 'Tue, 29 Jul 2003 06:31:17 GMT'}]
|
2007-05-23
|
[array(['Neshev', 'Dragomir', ''], dtype=object)
array(['Sukhorukov', 'Andrey A.', ''], dtype=object)
array(['Kivshar', 'Yuri S.', ''], dtype=object)
array(['Krolikowski', 'Wieslaw', ''], dtype=object)]
|
17,987 |
1801.08293
|
Clara Stegehuis
|
Ellen Cardinaels, Johan S.H. van Leeuwaarden, Clara Stegehuis
|
Finding induced subgraphs in scale-free inhomogeneous random graphs
|
14 pages
| null |
10.1007/978-3-319-92871-5_1
| null |
cs.DS math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the problem of finding a copy of a specific induced subgraph on
inhomogeneous random graphs with infinite variance power-law degrees. We
provide a fast algorithm that finds a copy of any connected graph $H$ on a
fixed number of $k$ vertices as an induced subgraph in a random graph with $n$
vertices. By exploiting the scale-free graph structure, the algorithm runs in
$O(n k)$ time for small values of $k$. As a corollary, this shows that the
induced subgraph isomorphism problem can be solved in time $O(nk)$ for the
inhomogeneous random graph. We test our algorithm on several real-world data
sets.
|
[{'version': 'v1', 'created': 'Thu, 25 Jan 2018 07:21:20 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Dec 2018 13:05:58 GMT'}
{'version': 'v3', 'created': 'Thu, 29 Aug 2019 09:23:59 GMT'}]
|
2019-08-30
|
[array(['Cardinaels', 'Ellen', ''], dtype=object)
array(['van Leeuwaarden', 'Johan S. H.', ''], dtype=object)
array(['Stegehuis', 'Clara', ''], dtype=object)]
|
17,988 |
2105.08965
|
Hyunjung Shim Dr.
|
Seungho Lee, Minhyun Lee, Jongwuk Lee and Hyunjung Shim
|
Railroad is not a Train: Saliency as Pseudo-pixel Supervision for Weakly
Supervised Semantic Segmentation
|
CVPR 2021 accepted
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Existing studies in weakly-supervised semantic segmentation (WSSS) using
image-level weak supervision have several limitations: sparse object coverage,
inaccurate object boundaries, and co-occurring pixels from non-target objects.
To overcome these challenges, we propose a novel framework, namely Explicit
Pseudo-pixel Supervision (EPS), which learns from pixel-level feedback by
combining two weak supervisions; the image-level label provides the object
identity via the localization map and the saliency map from the off-the-shelf
saliency detection model offers rich boundaries. We devise a joint training
strategy to fully utilize the complementary relationship between both
information. Our method can obtain accurate object boundaries and discard
co-occurring pixels, thereby significantly improving the quality of
pseudo-masks. Experimental results show that the proposed method remarkably
outperforms existing methods by resolving key challenges of WSSS and achieves
the new state-of-the-art performance on both PASCAL VOC 2012 and MS COCO 2014
datasets.
|
[{'version': 'v1', 'created': 'Wed, 19 May 2021 07:31:11 GMT'}]
|
2021-05-20
|
[array(['Lee', 'Seungho', ''], dtype=object)
array(['Lee', 'Minhyun', ''], dtype=object)
array(['Lee', 'Jongwuk', ''], dtype=object)
array(['Shim', 'Hyunjung', ''], dtype=object)]
|
17,989 |
1303.6309
|
Andrew Inglis
|
A. R. Inglis and B. R. Dennis
|
The relationship between hard X-ray pulse timings and the locations of
footpoint sources during solar flares
|
8 pages, 7 figures, 1 table
|
The Astrophysical Journal, 748:139, 2012
|
10.1088/0004-637X/748/2/139
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The cause of quasi-periodic pulsations (QPP) in solar flares remains the
subject of debate. Recently, Nakariakov & Zimovets (2011) proposed a new model
suggesting that, in two-ribbon flares, such pulsations could be explained by
propagating slow waves. These waves may travel obliquely to the magnetic field,
reflect in the chromosphere and constructively interfere at a spatially
separate site in the corona, leading to quasi-periodic reconnection events
progressing along the flaring arcade. Such a slow wave regime would have
certain observational characteristics. We search for evidence of this
phenomenon during a selection of two-ribbon flares observed by RHESSI, SOHO and
TRACE; the flares of 2002 November 9, 2005 January 19 and 2005 August 22. We
were not able to observe a clear correlation between hard X-ray footpoint
separations and pulse timings during these events. Also, the motion of hard
X-ray footpoints is shown to be continuous within the observational error,
whereas a discontinuous motion might be anticipated in the slow wave model.
Finally, we find that for a preferential slow wave propagation angle of 25-28
degrees that is expected for the fastest waves, the velocities of the hard
X-ray footpoints lead to estimated pulse periods and ribbon lengths
significantly larger than the measured values. Hence, for the three events
studied, we conclude that the observational characteristics cannot be easily
explained via the Nakariakov & Zimovets (2011) propagating slow wave model when
only angles of 25-28 degrees are considered. We provide suggested flare
parameters to optimise future studies of this kind.
|
[{'version': 'v1', 'created': 'Mon, 25 Mar 2013 20:51:22 GMT'}]
|
2013-03-27
|
[array(['Inglis', 'A. R.', ''], dtype=object)
array(['Dennis', 'B. R.', ''], dtype=object)]
|
17,990 |
2303.14576
|
Cheng Zhang
|
Cheng Zhang
|
Automatic Generation of Multiple-Choice Questions
|
thesis
| null | null | null |
cs.CL
|
http://creativecommons.org/licenses/by/4.0/
|
Creating multiple-choice questions to assess reading comprehension of a given
article involves generating question-answer pairs (QAPs) and adequate
distractors. We present two methods to tackle the challenge of QAP generations:
(1) A deep-learning-based end-to-end question generation system based on T5
Transformer with Preprocessing and Postprocessing Pipelines (TP3). We use the
finetuned T5 model for our downstream task of question generation and improve
accuracy using a combination of various NLP tools and algorithms in
preprocessing and postprocessing to select appropriate answers and filter
undesirable questions. (2) A sequence-learning-based scheme to generate
adequate QAPs via meta-sequence representations of sentences. A meta-sequence
is a sequence of vectors comprising semantic and syntactic tags. we devise a
scheme called MetaQA to learn meta sequences from training data to form pairs
of a meta sequence for a declarative sentence and a corresponding interrogative
sentence. The TP3 works well on unseen data, which is complemented by MetaQA.
Both methods can generate well-formed and grammatically correct questions.
Moreover, we present a novel approach to automatically generate adequate
distractors for a given QAP. The method is a combination of part-of-speech
tagging, named-entity tagging, semantic-role labeling, regular expressions,
domain knowledge bases, word embeddings, word edit distance, WordNet, and other
algorithms.
|
[{'version': 'v1', 'created': 'Sat, 25 Mar 2023 22:45:54 GMT'}]
|
2023-03-28
|
[array(['Zhang', 'Cheng', ''], dtype=object)]
|
17,991 |
2108.12540
|
Yiran Li
|
Yiran Li, Erin Musabandesu, Takanori Fujiwara, Frank J. Loge, Kwan-Liu
Ma
|
A Visual Analytics System for Water Distribution System Optimization
|
To be included in the IEEE VIS 2021 Short Paper Proceedings
| null | null | null |
cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The optimization of water distribution systems (WDSs) is vital to minimize
energy costs required for their operations. A principal approach taken by
researchers is identifying an optimal scheme for water pump controls through
examining computational simulations of WDSs. However, due to a large number of
possible control combinations and the complexity of WDS simulations, it remains
non-trivial to identify the best pump controls by reviewing the simulation
results. To address this problem, we design a visual analytics system that
helps understand relationships between simulation inputs and outputs towards
better optimization. Our system incorporates interpretable machine learning as
well as multiple linked visualizations to capture essential input-output
relationships from complex WDS simulations. We demonstrate our system's
effectiveness through a practical case study and evaluate its usability through
expert reviews. Our results show that our system can lessen the burden of
analysis and assist in determining optimal operating schemes.
|
[{'version': 'v1', 'created': 'Sat, 28 Aug 2021 01:08:25 GMT'}]
|
2021-08-31
|
[array(['Li', 'Yiran', ''], dtype=object)
array(['Musabandesu', 'Erin', ''], dtype=object)
array(['Fujiwara', 'Takanori', ''], dtype=object)
array(['Loge', 'Frank J.', ''], dtype=object)
array(['Ma', 'Kwan-Liu', ''], dtype=object)]
|
17,992 |
2105.04619
|
Stephan R Richter
|
Stephan R. Richter and Hassan Abu AlHaija and Vladlen Koltun
|
Enhancing Photorealism Enhancement
|
Code and data available at
https://github.com/intel-isl/PhotorealismEnhancement Video available at
https://youtu.be/P1IcaBn3ej0
| null | null | null |
cs.CV cs.AI cs.GR cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an approach to enhancing the realism of synthetic images. The
images are enhanced by a convolutional network that leverages intermediate
representations produced by conventional rendering pipelines. The network is
trained via a novel adversarial objective, which provides strong supervision at
multiple perceptual levels. We analyze scene layout distributions in commonly
used datasets and find that they differ in important ways. We hypothesize that
this is one of the causes of strong artifacts that can be observed in the
results of many prior methods. To address this we propose a new strategy for
sampling image patches during training. We also introduce multiple
architectural improvements in the deep network modules used for photorealism
enhancement. We confirm the benefits of our contributions in controlled
experiments and report substantial gains in stability and realism in comparison
to recent image-to-image translation methods and a variety of other baselines.
|
[{'version': 'v1', 'created': 'Mon, 10 May 2021 19:00:49 GMT'}]
|
2021-05-12
|
[array(['Richter', 'Stephan R.', ''], dtype=object)
array(['AlHaija', 'Hassan Abu', ''], dtype=object)
array(['Koltun', 'Vladlen', ''], dtype=object)]
|
17,993 |
1507.04313
|
Jonas Kahn
|
Philippe Heinrich and Jonas Kahn
|
Optimal rates for finite mixture estimation
|
48 pages, 1 figure, submitted to The Annals of Statistics, as a main
article (30 pages) and the appendices (19 pages) as supplemental material.
Part of the material appears in an earlier version appears as
arXiv:1504.03506, but without any result on pointwise rates, any figure, much
less bibliography and explanations, and overall different presentation
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the rates of estimation of finite mixing distributions, that is, the
parameters of the mixture. We prove that under some regularity and strong
identifiability conditions, around a given mixing distribution with $m_0$
components, the optimal local minimax rate of estimation of a mixing
distribution with $m$ components is $n^{-1/(4(m-m_0) + 2)}$. This corrects a
previous paper by Chen (1995) in The Annals of Statistics.
By contrast, it turns out that there are estimators with a (non-uniform)
pointwise rate of estimation of $n^{-1/2}$ for all mixing distributions with a
finite number of components.
|
[{'version': 'v1', 'created': 'Wed, 15 Jul 2015 18:20:17 GMT'}]
|
2015-07-16
|
[array(['Heinrich', 'Philippe', ''], dtype=object)
array(['Kahn', 'Jonas', ''], dtype=object)]
|
17,994 |
1101.2076
|
Stefan Kuhr
|
Christof Weitenberg, Manuel Endres, Jacob F. Sherson, Marc Cheneau,
Peter Schau{\ss}, Takeshi Fukuhara, Immanuel Bloch, Stefan Kuhr
|
Single-Spin Addressing in an Atomic Mott Insulator
|
8 pages, 5 figures
|
Nature 471, 319 (2011)
|
10.1038/nature09827
| null |
cond-mat.quant-gas quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ultracold atoms in optical lattices are a versatile tool to investigate
fundamental properties of quantum many body systems. In particular, the high
degree of control of experimental parameters has allowed the study of many
interesting phenomena such as quantum phase transitions and quantum spin
dynamics. Here we demonstrate how such control can be extended down to the most
fundamental level of a single spin at a specific site of an optical lattice.
Using a tightly focussed laser beam together with a microwave field, we were
able to flip the spin of individual atoms in a Mott insulator with
sub-diffraction-limited resolution, well below the lattice spacing. The Mott
insulator provided us with a large two-dimensional array of perfectly arranged
atoms, in which we created arbitrary spin patterns by sequentially addressing
selected lattice sites after freezing out the atom distribution. We directly
monitored the tunnelling quantum dynamics of single atoms in the lattice
prepared along a single line and observed that our addressing scheme leaves the
atoms in the motional ground state. Our results open the path to a wide range
of novel applications from quantum dynamics of spin impurities, entropy
transport, implementation of novel cooling schemes, and engineering of quantum
many-body phases to quantum information processing.
|
[{'version': 'v1', 'created': 'Tue, 11 Jan 2011 09:35:27 GMT'}]
|
2011-03-17
|
[array(['Weitenberg', 'Christof', ''], dtype=object)
array(['Endres', 'Manuel', ''], dtype=object)
array(['Sherson', 'Jacob F.', ''], dtype=object)
array(['Cheneau', 'Marc', ''], dtype=object)
array(['Schauß', 'Peter', ''], dtype=object)
array(['Fukuhara', 'Takeshi', ''], dtype=object)
array(['Bloch', 'Immanuel', ''], dtype=object)
array(['Kuhr', 'Stefan', ''], dtype=object)]
|
17,995 |
1802.00997
|
Clive Newstead
|
Steve Awodey, Clive Newstead
|
Polynomial pseudomonads and dependent type theory
|
26 pages
| null | null | null |
math.CT math.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We assemble polynomials in a locally cartesian closed category into a
tricategory, allowing us to define the notion of a polynomial pseudomonad and
polynomial pseudoalgebra. Working in the context of natural models of type
theory, we prove that dependent type theories admitting a unit type and
dependent sum types give rise to polynomial pseudomonads, and that those
admitting dependent product types give rise to polynomial pseudoalgebras.
|
[{'version': 'v1', 'created': 'Sat, 3 Feb 2018 16:58:00 GMT'}]
|
2018-02-06
|
[array(['Awodey', 'Steve', ''], dtype=object)
array(['Newstead', 'Clive', ''], dtype=object)]
|
17,996 |
1803.00745
|
Kosuke Mitarai
|
Kosuke Mitarai, Makoto Negoro, Masahiro Kitagawa, and Keisuke Fujii
|
Quantum Circuit Learning
| null |
Phys. Rev. A 98, 032309 (2018)
|
10.1103/PhysRevA.98.032309
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a classical-quantum hybrid algorithm for machine learning on
near-term quantum processors, which we call quantum circuit learning. A quantum
circuit driven by our framework learns a given task by tuning parameters
implemented on it. The iterative optimization of the parameters allows us to
circumvent the high-depth circuit. Theoretical investigation shows that a
quantum circuit can approximate nonlinear functions, which is further confirmed
by numerical simulations. Hybridizing a low-depth quantum circuit and a
classical computer for machine learning, the proposed framework paves the way
toward applications of near-term quantum devices for quantum machine learning.
|
[{'version': 'v1', 'created': 'Fri, 2 Mar 2018 07:52:48 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jan 2019 03:56:36 GMT'}
{'version': 'v3', 'created': 'Wed, 24 Apr 2019 02:46:11 GMT'}]
|
2019-04-25
|
[array(['Mitarai', 'Kosuke', ''], dtype=object)
array(['Negoro', 'Makoto', ''], dtype=object)
array(['Kitagawa', 'Masahiro', ''], dtype=object)
array(['Fujii', 'Keisuke', ''], dtype=object)]
|
17,997 |
2005.08418
|
Punyashloka Debashis
|
Punyashloka Debashis, Vaibhav Ostwal, Rafatul Faria, Supriyo Datta,
Joerg Appenzeller, Zhihong Chen
|
Hardware implementation of Bayesian network building blocks with
stochastic spintronic devices
|
9 pages, 4 figures
| null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bayesian networks are powerful statistical models to understand causal
relationships in real-world probabilistic problems such as diagnosis,
forecasting, computer vision, etc. For systems that involve complex causal
dependencies among many variables, the complexity of the associated Bayesian
networks become computationally intractable. As a result, direct hardware
implementation of these networks is one promising approach to reducing power
consumption and execution time. However, the few hardware implementations of
Bayesian networks presented in literature rely on deterministic CMOS devices
that are not efficient in representing the inherently stochastic variables in a
Bayesian network. This work presents an experimental demonstration of a
Bayesian network building block implemented with naturally stochastic
spintronic devices. These devices are based on nanomagnets with perpendicular
magnetic anisotropy, initialized to their hard axes by the spin orbit torque
from a heavy metal under-layer utilizing the giant spin Hall effect, enabling
stochastic behavior. We construct an electrically interconnected network of two
stochastic devices and manipulate the correlations between their states by
changing connection weights and biases. By mapping given conditional
probability tables to the circuit hardware, we demonstrate that any two node
Bayesian networks can be implemented by our stochastic network. We then present
the stochastic simulation of an example case of a four node Bayesian network
using our proposed device, with parameters taken from the experiment. We view
this work as a first step towards the large scale hardware implementation of
Bayesian networks.
|
[{'version': 'v1', 'created': 'Mon, 18 May 2020 01:35:54 GMT'}]
|
2020-05-19
|
[array(['Debashis', 'Punyashloka', ''], dtype=object)
array(['Ostwal', 'Vaibhav', ''], dtype=object)
array(['Faria', 'Rafatul', ''], dtype=object)
array(['Datta', 'Supriyo', ''], dtype=object)
array(['Appenzeller', 'Joerg', ''], dtype=object)
array(['Chen', 'Zhihong', ''], dtype=object)]
|
17,998 |
1510.08502
|
Brendon Rhoades
|
Michelle Bodnar and Brendon Rhoades
|
Cyclic sieving and rational Catalan theory
|
27 pages, 5 figures
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $a < b$ be coprime positive integers. Armstrong, Rhoades, and Williams
defined a set $\mathsf{NC}(a,b)$ of `rational noncrossing partitions', which
form a subset of the ordinary noncrossing partitions of $\{1, 2, \dots, b-1\}$.
Confirming a conjecture of Armstrong et. al., we prove that $\mathsf{NC}(a,b)$
is closed under rotation and prove an instance of the cyclic sieving phenomenon
for this rotational action. We also define a rational generalization of the
$\mathfrak{S}_a$-noncrossing parking functions of Armstrong, Reiner, and
Rhoades.
|
[{'version': 'v1', 'created': 'Wed, 28 Oct 2015 21:42:40 GMT'}]
|
2015-10-30
|
[array(['Bodnar', 'Michelle', ''], dtype=object)
array(['Rhoades', 'Brendon', ''], dtype=object)]
|
17,999 |
0904.4362
|
Stefano De Capua
|
Stefano de Capua (for the LHCb collaboration)
|
The LHCB Commissioning
| null | null | null | null |
hep-ex physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The LHCb experiment is dedicated to precision measurements of CP violation
and rare decays of B hadrons at the Large Hadron Collider (LHC) at CERN. The
LHCb installation has been finished in spring 2008 and an intensive testing and
commissioning of the system has been started. An overview and the results from
our commissioning activities are described.
|
[{'version': 'v1', 'created': 'Tue, 28 Apr 2009 10:24:47 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Apr 2009 10:08:55 GMT'}]
|
2019-08-13
|
[array(['de Capua', 'Stefano', '', 'for the LHCb collaboration'],
dtype=object) ]
|
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