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Factorization of arithmetic automorphic periodsMay 03 2017In this paper, we prove that the arithmetic automorphic periods for $GL_{n}$ over a CM field factorize through the infinite places. This generalizes a conjecture of Shimura in 1983, and is predicted by the Langlands correspondence between automorphic ... More

Period relations for automorphic induction and applications, INov 11 2015Let $K$ be a quadratic imaginary field. Let $\Pi$ (resp. $\Pi'$) be a regular algebraic cuspidal representation of $GL_{n}(K)$ (resp. $GL_{n-1}(K)$) which is moreover cohomological and conjugate self-dual. In \cite{harris97}, M. Harris has defined automorphic ... More

An automorphic variant of the Deligne conjectureAug 27 2016Apr 28 2017In this paper we introduce an automorphic variant of the Deligne conjecture for tensor product of two motives over a quadratic imaginary field. On one hand, we define some motivic periods and rewrite the Deligne conjecture in terms of these periods. On ... More

Special values of automorphic $L$-functions for $GL_{n}\times GL_{n'}$ over CM fields, factorization and functoriality of arithmetic automorphic periodsNov 11 2015Michael HARRIS defined the arithmetic automorphic periods for certain cuspidal representations of $GL_{n}$ over quadratic imaginary fields in his Crelle paper 1997. He also showed that critical values of automorphic L-functions for $GL_{n}\times GL_{1}$ ... More

Lifshitz transition in two-dimensional spin-density wave modelsNov 17 2010We argue that both pocket-disappearing and neck-disrupting types of Lifshitz transitions can be realized in two-dimensional spin-density wave models for underdoped cuprates, and study both types of transitions with impurity scattering treated in the self-consistent ... More

Period relations and special values of Rankin-Selberg $L$-functionsAug 26 2016This is a survey of recent work on values of Rankin-Selberg $L$-functions of pairs of cohomological automorphic representations that are {\it critical} in Deligne's sense. The base field is assumed to be a CM field. Deligne's conjecture is stated in the ... More

Microscopic processes controlling the Herschel-Bulkley exponentAug 01 2017Jan 15 2018The flow curve of various yield stress materials is singular as the strain rate vanishes, and can be characterized by the so-called Herschel-Bulkley exponent $n=1/\beta$. A mean-field approximation due to Hebraud and Lequeux (HL) assumes mechanical noise ... More

The effects of stochasticity at the single-cell level and cell size control on the population growthNov 23 2016Sep 18 2017Establishing a quantitative connection between the population growth rate and the generation times of single cells is a prerequisite for understanding evolutionary dynamics of microbes. However, existing theories fail to account for the experimentally ... More

State Transitions in Ultracompact Neutron Star LMXBs: towards the Low Luminosity LimitNov 21 2017Luminosity of X-ray spectral state transitions in black hole and neutron star X-ray binaries can put constraint on the critical mass accretion rate between accretion regimes. Previous studies indicate that the hard-to-soft spectral state transitions in ... More

Mean-field description of plastic flow in amorphous solidsJun 11 2015Jul 17 2015Failure and flow of amorphous materials are central to various phenomena including earthquakes and landslides. There is accumulating evidence that the yielding transition between a flowing and an arrested phase is a critical phenomenon, but the associated ... More

Mean-field description of plastic flow in amorphous solidsJun 11 2015Jul 28 2017Failure and flow of amorphous materials are central to various phenomena including earthquakes and landslides. There is accumulating evidence that the yielding transition between a flowing and an arrested phase is a critical phenomenon, but the associated ... More

How does cell size regulation affect population growth?Nov 23 2016The proliferation of a growing microbial colony is well characterized by the population growth rate. However, at the single-cell level, isogenic cells often exhibit different cell-cycle durations. For evolutionary dynamics, it is thus important to establish ... More

Period relations and special values of Rankin-Selberg $L$-functionsAug 26 2016Dec 18 2016This is a survey of recent work on values of Rankin-Selberg $L$-functions of pairs of cohomological automorphic representations that are {\it critical} in Deligne's sense. The base field is assumed to be a CM field. Deligne's conjecture is stated in the ... More

Special values of $L$-functions and the refined Gan-Gross-Prasad conjectureMay 22 2017We prove explicit rationality-results for Asai- $L$-functions, $L^S(s,\Pi',{\rm As}^\pm)$, and Rankin-Selberg $L$-functions, $L^S(s,\Pi\times\Pi')$, over arbitrary CM-fields $F$, relating critical values to explicit powers of $(2\pi i)$. Besides determining ... More

Galois equivariance of critical values of $L$-functions for unitary groupsDec 30 2016The goal of this paper is to provide a refinement of a formula proved by the first author which expresses some critical values of automorphic $L$-functions on unitary groups as Petersson norms of automorphic forms. Here we provide a Galois equivariant ... More

CP violation in psi(2S) -> J/psi pi pi processesJan 30 2000Apr 01 2000We propose to search for CP-violating effects in the decay psi(2S)->J/psi+pi+pi. The scheme has the advantage that one does not need to track two or more CP-conjugate processes. Model independent amplitudes are derived for this purpose. The fact that ... More

Covariant amplitudes for mesonsMar 15 1999We show how to construct covariant amplitudes for processes involving higher spins in this paper. First we give the explicit expressions of Rarita-Schwinger wave functions and propagators for bosons with spins, then kinematic singularity free 3-leg effective ... More

Spin Zeros and the Origin of Fermi Surface Reconstruction in the CupratesJul 07 2010Two recent quantum oscillation studies find contradictory results concerning the existence of spin zeros - zeros of the oscillatory signal induced by Zeeman splitting of the Landau levels. We discuss these experiments in light of calculations of the oscillations ... More

Theory of Low-Temperature Hall Effect in Stripe--Ordered CupratesJul 01 2008We investigate the effect of static anti-phase stripe order on the weak-field Hall effect of electrons on a two-dimensional square lattice with electron dispersion appropriate to the high T$_c$ cuprates. We first consider the cases where the magnitudes ... More

Addendum: Theory of low-temperature Hall effect in stripe-ordered cupratesAug 18 2009We supplement a previously published calculation of the Hall effect in stripe ordered cuprates by presenting results for the physically relevant sign of the potential arising from charge ordering. The new results are more consistent with data, underscoring ... More

Theory of Low-Temperature Hall Effect in Electron-Doped CupratesJul 13 2005A mean field calculation of the $T\to 0$ limit of the Hall conductance of electron-doped cuprates such as $Pr_{2-x}Ce_xCuO_{4+\delta}$ is presented. The data are found to be qualitatively consistent with the reconstruction of the Fermi surface expected ... More

Band gap corrections for molecules and solids using Koopmans theorem and Wannier functionsFeb 27 2015We have proposed a method for correcting the Kohn-Sham eigen energies in the density functional theory (DFT) based on the Koopmans theorem using Wannier functions. The method provides a general approach applicable for molecules and solids for electronic ... More

Optical and Hall conductivities of a thermally disordered two-dimensional spin-density wave: two-particle response in the pseudogap regime of electron-doped high-$T_c$ superconductorsNov 14 2010We calculate the longitudinal ($\sigma_{xx}$) and Hall ($\sigma_{xy}$) optical conductivities for two-dimensional metals with thermally disordered antiferromagnetism using a generalization of an approximation introduced by Lee, Rice and Anderson for the ... More

Canonical Charmonium Interpretation for Y(4360) and Y(4660)Aug 28 2007Jan 13 2008In this work, we consider the canonical charmonium assignments for Y(4360) and Y(4660). Y(4660) is good candidate of $\rm 5 ^3S_1$ $c\bar{c}$ state, the possibility of Y(4360) as a $\rm 3 ^3D_1$ $c\bar{c}$ state is studied, and the charmonium hybrid interpretation ... More

Modeling cell size regulation: From single-cell level statistics to molecular mechanisms and population level effectsJan 01 2018Most microorganisms regulate their cell size. We review here some of the mathematical formulations of the problem of cell size regulation. We focus on coarse-grained stochastic models and the statistics they generate. We review the biologically relevant ... More

Exploring Lexical, Syntactic, and Semantic Features for Chinese Textual Entailment in NTCIR RITE Evaluation TasksApr 08 2015We computed linguistic information at the lexical, syntactic, and semantic levels for Recognizing Inference in Text (RITE) tasks for both traditional and simplified Chinese in NTCIR-9 and NTCIR-10. Techniques for syntactic parsing, named-entity recognition, ... More

Some A priori estimates for the homogeneous Landau equation with soft potentialsFeb 07 2013Mar 31 2013This paper deals with the derivation of some \'a priori estimates for the homogeneous Landau equation with soft potentials. Using the coercivity of the Landau operator for soft potentials, we prove a global estimate of weak solutions in $L^2$ space without ... More

Representations of tame quivers and affine canonical basesJun 11 2007Jul 09 2007An integral PBW-basis of type $A_1^{(1)}$ has been constructed by Zhang [Z] and Chen [C] using the Auslander-Reiten quiver of the Kronecker quiver. We associate a geometric order to elements in this basis following an idea of Lusztig [L1] in the case ... More

Deligne's conjecture for automorphic motives over CM-fields, Part I: factorizationFeb 08 2018This is the first of two papers devoted to the relations between Deligne's conjecture on critical values of motivic $L$-functions and the multiplicative relations between periods of arithmetically normalized automorphic forms on unitary groups. The present ... More

One-parameter formal deformations of Hom-Lie-Yamaguti algebrasJan 15 2015This paper studies one-parameter formal deformations of Hom-Lie-Yamaguti algebras. The first, second and third cohomology groups on Hom-Lie-Yamaguti algebras extending ones on Lie-Yamaguti algebras are provided. It is proved that first and second cohomology ... More

Cohomology and 1-parameter formal deformations of Hom-Lie triple systemsSep 13 2013In this paper, we study the cohomology theory of Hom-Lie triple systems generalizing the Yamaguti cohomology theory of Lie triple systems. We introduce the central extension theory for Hom-Lie triple systems and show that there is a one-to-one correspondence ... More

On the Deformation of Lie-Yamaguti algebrasJan 06 2014The deformation theory of Lie-Yamaguti algebras is developed by choosing a suitable cohomology. The relationship between the deformation and the obstruction of Lie-Yamaguti algebras is obtained.

Systems of quotients of Lie triple systemsApr 27 2013In this paper, we introduce the notion of system of quotients of Lie triple systems and investigate some properties which can be lifted from a Lie triple system to its systems of quotients. We relate the notion of Lie triple system of Martindale-like ... More

Thermalization of acoustic excitations in a strongly interacting one-dimensional quantum liquidAug 28 2012We study inelastic decay of bosonic excitations in a Luttinger liquid. In a model with linear excitation spectrum the decay rate diverges. We show that this difficulty is resolved when the interaction between constituent particles is strong, and the excitation ... More

Comparison of high-energy galactic and atmospheric tau neutrino fluxDec 17 2001Mar 06 2002We compare the tau neutrino flux arising from the galaxy and the earth atmosphere for 10^3 < E/GeV < 10^11. The intrinsic and oscillated tau neutrino fluxes from both sources are calculated. The intrinsic galactic \nu_{\tau} flux (E > 10^3 GeV) is calculated ... More

Steady-state Mechanical Squeezing in an Optomechanical System via Duffing NonlinearityMar 01 2014Jan 23 2015Quantum squeezing in mechanical systems is not only a key signature of macroscopic quantum effects, but can also be utilized to advance the metrology of weak forces. Here we show that strong mechanical squeezing in the steady state can be generated in ... More

Nested Invariance Pooling and RBM Hashing for Image Instance RetrievalMar 15 2016Apr 14 2016The goal of this work is the computation of very compact binary hashes for image instance retrieval. Our approach has two novel contributions. The first one is Nested Invariance Pooling (NIP), a method inspired from i-theory, a mathematical theory for ... More

DeepHash: Getting Regularization, Depth and Fine-Tuning RightJan 20 2015This work focuses on representing very high-dimensional global image descriptors using very compact 64-1024 bit binary hashes for instance retrieval. We propose DeepHash: a hashing scheme based on deep networks. Key to making DeepHash work at extremely ... More

Lifshitz Transition in Underdoped CupratesApr 01 2010Recent studies show that quantum oscillations thought to be associated with a density wave reconstructed Fermi surface disappear at a critical value of the doping for YBa2Cu3O6+y, and the cyclotron mass diverges as the critical value is approached from ... More

A Graph-Based Semi-Supervised k Nearest-Neighbor Method for Nonlinear Manifold Distributed Data ClassificationJun 03 2016$k$ Nearest Neighbors ($k$NN) is one of the most widely used supervised learning algorithms to classify Gaussian distributed data, but it does not achieve good results when it is applied to nonlinear manifold distributed data, especially when a very limited ... More

Study the dynamics of the nonspreading Airy packets from the time evolution operatorAug 03 2012Berry and Balazs showed that an initial Airy packet Ai(b x) under time evolution is nonspreading in free space and also in a homogeneous time-varying linear potential V(x,t)=-F(t) x. We find both results can be derived from the time evolution operator ... More

Tiny Descriptors for Image Retrieval with Unsupervised Triplet HashingNov 10 2015A typical image retrieval pipeline starts with the comparison of global descriptors from a large database to find a short list of candidate matches. A good image descriptor is key to the retrieval pipeline and should reconcile two contradictory requirements: ... More

Three-dimensional array foci of generalized Fibonacci photon sievesOct 13 2015We present a new kind of photon sieves on the basis of the generalized Fibonacci sequences. The required numbers and locations of axial foci can be designed by generalized Fibonacci photon sieves (GFiPS). Furthermore, the three-dimensional array foci ... More

Logarithmic temperature dependence of Hall transport in granular metalsJul 22 2011We have measured the Hall coefficient $R_H$ and the electrical conductivity $\sigma$ of a series of ultrathin indium tin oxide films between 2 and 300 K. A robust $R_H$\,$\propto$\,ln$T$ law is observed in a considerably wide temperature range of 2 and ... More

Co-Regularized Deep Representations for Video SummarizationJan 30 2015Compact keyframe-based video summaries are a popular way of generating viewership on video sharing platforms. Yet, creating relevant and compelling summaries for arbitrarily long videos with a small number of keyframes is a challenging task. We propose ... More

An automorphic version of the Deligne conjectureAug 27 2016In this paper we introduce an automorphic version of the Deligne conjecture for tensor product of two motives over a quadratic imaginary field. On one hand, we define some motivic periods and rewrite the Deligne conjecture in terms of these periods. On ... More

Correlated valence-bond statesJun 28 2012Jul 05 2012We study generalizations of the singlet-sector amplitude-product (AP) states in the valence-bond basis of S=1/2 quantum spin systems. In the standard AP states, the weight of a tiling of the system into valence bonds (singlets of two spins) is a product ... More

Nonspreading wave packets in a general potential V(x,t) in one dimensionSep 24 2008We discuss nonspreading wave packets in one dimensional Schr\"{o}dinger equation. We derive general rules for constructing nonspreading wave packets from a general potential $\textmd{V}(x,t)$. The essential ingredients of a nonspreading wave packet, the ... More

Entanglement and its relationship to classical dynamicsAug 01 2017We present an analysis of the entangling quantum kicked top focusing on the few qubit case and the initial condition dependence of the time-averaged entanglement $S_Q$ for spin-coherent states. We show a very strong connection between the classical phase ... More

Electron-electron scatttering in Sn-doped indium oxide thick filmsJun 24 2013We have measured the low-field magnetoresistances (MRs) of a series of Sn-doped indium oxide thick films in the temperature $T$ range 4--35 K. The electron dephasing rate $1/\tau_{\varphi}$ as a function of $T$ for each film was extracted by comparing ... More

Naming Game on small-world networks: the role of clustering structureJun 30 2006Oct 15 2006Naming Game is a recently proposed model for describing how a multi-agent system can converge towards a consensus state in a self-organized way. In this paper, we investigate this model on the so-called homogeneous small-world networks and focus on the ... More

Exact solutions and elementary excitations in the XXZ spin chain with unparallel boundary fieldsDec 08 2002By using a set of gauge transformations, the exact solutions of the XXZ spin chain with unparallel boundary magnetic fields are derived in the framework of the algebraic Bethe ansatz. In the easy-plane case, we show the elementary excitations are some ... More

Correlated and Individual Multi-Modal Deep Learning for RGB-D Object RecognitionApr 06 2016Apr 07 2016In this paper, we propose a new correlated and individual multi-modal deep learning (CIMDL) method for RGB-D object recognition. Unlike most conventional RGB-D object recognition methods which extract features from the RGB and depth channels individually, ... More

Scaling Description of Non-Local RheologyJul 25 2016Non-locality is crucial to understand the plastic flow of an amorphous material, and has been successfully described by the fluidity, along with a cooperativity length scale {\xi}. We demonstrate, by applying the scaling hypothesis to the yielding transition, ... More

A Practical Guide to CNNs and Fisher Vectors for Image Instance RetrievalAug 11 2015Aug 25 2015With deep learning becoming the dominant approach in computer vision, the use of representations extracted from Convolutional Neural Nets (CNNs) is quickly gaining ground on Fisher Vectors (FVs) as favoured state-of-the-art global image descriptors for ... More

On the density of shear transformation zones in amorphous solidsJul 05 2013We study the stability of amorphous solids, focusing on the distribution P(x) of the local stress increase x that would lead to an instability. We argue that this distribution is singular P(x)x^{\theta}, where the exponent {\theta} is non-zero if the ... More

Revisiting Associated Production of 125 GeV Higgs Boson with a Photon at a Higgs FactoryFeb 13 2014Sep 25 2014Considering the constraints from the flavor physics, precision electroweak measurements, Higgs data and dark matter detections, we scan over the parameter space of the MSSM and calculate the cross section of $e^+e^- \to h \gamma$ in the allowed parameter ... More

Criticality in the approach to failure in amorphous solidsMay 11 2015Sep 23 2015Failure of amorphous solids is fundamental to various phenomena, including landslides and earthquakes. Recent experiments indicate that highly plastic regions form elongated structures that are especially apparent near the maximal shear stress $\Sigma_{\max}$ ... More

Scaling description of the yielding transition in soft amorphous solids at zero temperatureMar 26 2014Nov 23 2014Yield stress materials flow if a sufficiently large shear stress is ap- plied. Although such materials are ubiquitous and relevant for indus- try, there is no accepted microscopic description of how they yield, even in the simplest situations where temperature ... More

Energy-efficient Analytics for Geographically Distributed Big DataAug 10 2017Aug 26 2017Big data analytics on geographically distributed datasets (across data centers or clusters) has been attracting increasing interests from both academia and industry, but also significantly complicates the system and algorithm designs. In this article, ... More

Electron dephasing in homogeneous and inhomogeneous indium tin oxide thin filmsFeb 08 2012The electron dephasing processes in two-dimensional homogeneous and inhomogeneous indium tin oxide thin films have been investigated in a wide temperature range 0.3--90 K. We found that the small-energy-transfer electron-electron ($e$-$e$) scattering ... More

Statistical properties of agent-based models in markets with continuous double auction mechanismFeb 04 2010Real world markets display power-law features in variables such as price fluctuations in stocks. To further understand market behavior, we have conducted a series of market experiments on our web-based prediction market platform which allows us to reconstruct ... More

Adaptive Depth Imaging with Single-Photon DetectorsNov 14 2016For active optical imaging, the use of single-photon detectors could greatly improve the detection sensitivity of the system. However in low light-level, traditional maximum-likelihood based imaging method needs long acquisition time to capture clear ... More

Multi-resource Energy-efficient Routing in Cloud Data Centers with Networks-as-a-ServiceJan 21 2015Mar 12 2016With the rapid development of software defined networking and network function virtualization, researchers have proposed a new cloud networking model called Network-as-a-Service (NaaS) which enables both in-network packet processing and application-specific ... More

Probing the R-parity violating supersymmetric effects in the exclusive $c\to d/s\ellν_\ell$ decaysJul 06 2014A lot of branching ratios of the exclusive $c \to d/s\ell\nu_\ell$ ($\ell=e,\mu$) decays have been quite accurately measured by CLEO-c, BELLE, BABAR, BES(I,II,III), ALEPH and MARKIII collaborations. We probe the R-parity violating supersymmetric effects ... More

Temperature dependence of circular DNA topological statesApr 23 2009Circular double stranded DNA has different topological states which are defined by their linking numbers. Equilibrium distribution of linking numbers can be obtained by closing a linear DNA into a circle by ligase. Using Monte Carlo simulation, we predict ... More

Automatic Modulation Recognition of PSK Signals with Sub-Nyquist Sampling Based on High Order StatisticsDec 31 2014Sampling rate required in the Nth Power Nonlinear Transformation (NPT) method is typically much greater than Nyquist rate, which causes heavy burden for the Analog to Digital Converter (ADC). Taking advantage of the sparse property of PSK signals' spectrum ... More

Adaptive Depth Imaging with Single-Photon DetectorsNov 14 2016Mar 03 2017For active optical imaging, the use of single-photon detectors can greatly improve the detection sensitivity of the system. However, the traditional maximum-likelihood based imaging method needs a long acquisition time to capture clear three-dimensional ... More

Deposition of quantum dots in a capillary tubeNov 18 2015The ability to assemble nanomaterials, such as quantum dots, enables the creation of functional devices that present unique optical and electronic properties. For instance, light-emitting diodes with exceptional color purity can be printed via the evaporative-driven ... More

Experimental evidence for non-Abelian gauge potentials in twisted graphene bilayersApr 09 2015The methods for realizing of non-Abelian gauge potentials have been proposed in many different systems in condensed matter1-5. The simplest realization among them may be in a graphene bilayer obtained by slightly relative rotation between the two layers4. ... More

Van der Waals like behavior and equal area law of two point correlation function of f(R) AdS black holesApr 28 2016May 04 2016To gain holographic insight into critical phenomena of $f(R)$ AdS black holes, we investigate their two point correlation function, which are dual to the geodesic length in the bulk. We solve the equation of motion constrained by the boundary condition ... More

Performance Analysis of Joint-Sparse Recovery from Multiple Measurements and Prior Information via Convex OptimizationSep 22 2015Oct 22 2015We address the problem of compressed sensing with multiple measurement vectors associated with prior information in order to better reconstruct an original sparse matrix signal. $\ell_{2,1}-\ell_{2,1}$ minimization is used to emphasize co-sparsity property ... More

Poisson-Nernst-Planck Model of Bipolar Nano uidic Diode Based on Bulletlike NanoporeSep 10 2013Bipolar nanofluidic diode is based on nanopore with positive and negative surface charges separated by a junction. This paper investigates the effects of the pore structure, taking the bullet-like pore as an example, on the ion current rectification. ... More

Excesses of Cosmic Ray Spectra from A Single Nearby SourceNov 28 2016Growing evidence reveals universal hardening on various cosmic ray spectra, e.g. proton, positron, as well as antiproton fraction. Such universality may indicate they have a common origin. In this paper, we argue that these widespread excesses can be ... More

Normal State Gap in Parent Cuprate Pr2CuO4+/-δMar 09 2017We present a tunneling study on single crystalline parent cuprate thin films, i.e. a series of Pr2CuO4+/-{\delta}(PCO) with tunable superconducting transition temperature. The zero-bias anomaly of differential conductance, well reported in the normal ... More

Cheating-Resilient Incentive Scheme for Mobile Crowdsensing SystemsJan 08 2017Mobile Crowdsensing is a promising paradigm for ubiquitous sensing, which explores the tremendous data collected by mobile smart devices with prominent spatial-temporal coverage. As a fundamental property of Mobile Crowdsensing Systems, temporally recruited ... More

Egocentric Activity Recognition with Multimodal Fisher VectorJan 25 2016With the increasing availability of wearable devices, research on egocentric activity recognition has received much attention recently. In this paper, we build a Multimodal Egocentric Activity dataset which includes egocentric videos and sensor data of ... More

Study of semileptonic $\bar{B}^* \to P \ell \barν_\ell$ decaysJun 29 2016In anticipation of abundant $B^*$ data samples at high-luminosity heavy-flavor experiments in the future, the tree-dominated semileptonic $\bar{B}^*_{u,d,s} \to P \ell^- \bar{\nu}_\ell$ $(P=D\,,D_s\,,\pi\,,K)$ decays are studied within the Standard Model. ... More

Learning Low-Complexity Autoregressive Models via Proximal Alternating MinimizationSep 17 2016We consider the estimation of the state transition matrix in vector autoregressive models when the time sequence data is limited but nonsequence steady-state data is abundant. To leverage both sources of data, we formulate the problem as the least-squares ... More

Reversible Recursive Instance-level Object SegmentationNov 14 2015Nov 18 2015In this work, we propose a novel Reversible Recursive Instance-level Object Segmentation (R2-IOS) framework to address the challenging instance-level object segmentation task. R2-IOS consists of a reversible proposal refinement sub-network that predicts ... More

Deep Q-Networks for Accelerating the Training of Deep Neural NetworksJun 05 2016Aug 01 2016We present a method, called QAN, for improving the generalization ability of a deep neural network (DNN). It achieves this by using a deep Q-network (DQN) to learn policies to control some behaviors of the DNN during training across episodes. We feed ... More

Longitudinal Single Bunch Instability Study on BEPCIIApr 10 2013In order to study the single bunch longitudinal instability in BEPCII, experiments on the positron ring (BPR) for the bunch lengthening phenomenon were made. By analyzing the experimental data based on Gao's theory, the longitudinal loss factor for the ... More

Robust superconductivity and transport properties in (Li1-xFex)OHFeSe single crystalsJan 19 2016The recently discovered (Li${_{1-x}}$Fe${_x}$)OHFeSe superconductor with $T_c$ about 40K provides a good platform for investigating the magnetization and electrical transport properties of FeSe-based superconductors. By using a hydrothermal ion-exchange ... More

Manipulating counter-rotating interactions in the quantum Rabi model via qubit frequency modulationMar 29 2016We propose a practical approach to manipulate the counter-rotating (CR) interactions in the quantum Rabi model by introducing a sinusoidal modulation to the transition frequency of the quantum two-level system in this model. By choosing appropriate modulation ... More

Spatial chaos of Wang tiles with two symbolsJul 15 2015This investigation completely classifies the spatial chaos problem in plane edge coloring (Wang tiles) with two symbols. For a set of Wang tiles $\mathcal{B}$, spatial chaos occurs when the spatial entropy $h(\mathcal{B})$ is positive. $\mathcal{B}$ is ... More

Pruning Convolutional Neural Networks for Image Instance RetrievalJul 18 2017In this work, we focus on the problem of image instance retrieval with deep descriptors extracted from pruned Convolutional Neural Networks (CNN). The objective is to heavily prune convolutional edges while maintaining retrieval performance. To this end, ... More

Compression of Deep Neural Networks for Image Instance RetrievalJan 18 2017Image instance retrieval is the problem of retrieving images from a database which contain the same object. Convolutional Neural Network (CNN) based descriptors are becoming the dominant approach for generating {\it global image descriptors} for the instance ... More

Group Invariant Deep Representations for Image Instance RetrievalJan 09 2016Jan 13 2016Most image instance retrieval pipelines are based on comparison of vectors known as global image descriptors between a query image and the database images. Due to their success in large scale image classification, representations extracted from Convolutional ... More

Symmetry and conservation principles of evolution of general Rayleigh-Taylor mixing frontsOct 23 2015A theory determining the evolution of general Rayleigh-Taylor mixing fronts is established to reproduce firstly all of the documented experiments conducted for diverse acceleration histories and all density ratios. The theory is established in terms of ... More

Automatic Modulation Recognition of PSK Signals Using Nonuniform Compressive Samples Based on High Order StatisticsDec 31 2014Phase modulation is a commonly used modulation mode in digital communication, which usually brings phase sparsity to digital signals. It is naturally to connect the sparsity with the newly emerged theory of compressed sensing (CS), which enables sub-Nyquist ... More

A Novel Compressed Sensing Based Model for Reconstructing Sparse Signals Using Phase Sparse CharacterDec 31 2014Phase modulation is a commonly used modulation mode in digital communication, which usually brings phase sparsity to digital signals. It is naturally to connect the sparsity with the newly emerged theory of compressed sensing (CS), which enables sub-Nyquist ... More

Evidence for marginal stability in emulsionsJul 25 2016We report the first measurements of the effect of pressure on vibrational modes in emulsions, which serve as a model for soft frictionless spheres at zero temperature. As a function of the applied pressure, we find that the density of states D(omega) ... More

A novel three-axis cylindrical hohlraum designed for inertial confinement fusion ignitionMay 12 2016A novel ignition hohlraum for indirect-drive inertial confinement fusion is proposed, which is named as three-axis cylindrical hohlraum (TACH). TACH is a kind of 6 laser entrance holes (LEHs) hohlraum, which is made of three cylindrical hohlraums orthogonally ... More

Compact Descriptors for Video Analysis: the Emerging MPEG StandardApr 26 2017This paper provides an overview of the on-going compact descriptors for video analysis standard (CDVA) from the ISO/IEC moving pictures experts group (MPEG). MPEG-CDVA targets at defining a standardized bitstream syntax to enable interoperability in the ... More

Multi-band superconductivity and large anisotropy in FeS crystalsNov 27 2015Feb 19 2016By using a hydrothermal method, we have successfully grown crystals of the newly discovered superconductor FeS, which has an isostructure of the iron based superconductor FeSe. The superconductivity appears at about 4.5K, as revealed by both resistive ... More

Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observationsApr 19 2008Dec 09 2008In this paper, we use a set of observational $H(z)$ data (OHD) to constrain the $\Lambda$CDM cosmology. This data set can be derived from the differential ages of the passively evolving galaxies. Meanwhile, the $\mathcal {A}$-parameter, which describes ... More

End-to-End Video Classification with Knowledge GraphsNov 06 2017Video understanding has attracted much research attention especially since the recent availability of large-scale video benchmarks. In this paper, we address the problem of multi-label video classification. We first observe that there exists a significant ... More

Macroscopic Quantum Superposition in Cavity OptomechanicsDec 23 2015Apr 20 2016Quantum superposition in mechanical systems is not only key evidence for macroscopic quantum coherence, but can also be utilized in modern quantum technology. Here we propose an efficient approach for creating macroscopically distinct mechanical superposition ... More

Explicit expressions of spin wave functionsJun 04 1999We derive the explicit expressions of the canonical and helicity wave functions for massive particles with arbitrary spins. Properties of these wave functions are discussed.

Crystallographic dependent transport properties and oxygen issue in superconducting LiTi2O4 thin filmsAug 24 2016A systematic study is performed on the spinel oxide, i.e. LiTi2O4 thin films oriented along [111]-, [110]-, and [001]-directions, to reveal the crystallographic dependence of transport properties. With decreasing temperature, the LiTi2O4 displays roughly ... More