Results for "Wei Zhu"

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A regularity theory for multiple-valued Dirichlet minimizing mapsAug 07 2006This paper discusses the regularity of multiple-valued Dirichlet minimizing maps into the sphere. It shows that even at branched point, as long as the normalized energy is small enough, we have the energy decay estimate. Combined with the previous work ... More
A geometrizing higher twist effect on nuclear targetAug 30 2004Feb 13 2005The higher twist effects in deep inelastic scattering on the nuclear target are studied using time ordered perturbation theory. We showed that the collinear rescattering of the outgoing quark on the extra nucleons via the contacting gluon-pair is dominant ... More
Evidence of Different Formation Mechanisms for Hot versus Warm Super-EarthsMar 05 2015Using the Kepler planet sample from Buchhave et al. and the statistical method clarified by Schlaufman, I show that the shorter-period super-Earths have a different dependence on the host star metallicity from the longer-period super-Earths, with the ... More
Influence of Stellar Metallicity on Occurrence Rates of Planets and Planetary SystemsAug 28 2018Jan 24 2019We study the influence of stellar metallicity on the fraction of stars with planets (i.e., the occurrence rate of planetary systems) and the average number of planets per star (i.e., the occurrence rate of planets). The former directly reveals the planet ... More
Are valence quarks rotating?Oct 27 2012We suggest to compare the deep inelastic scattering structure functions measured in the unpolarized charged-lepton scattering off a transversely polarized proton and off a longitudinally polarized proton at larger Bjorken variable $x$, one may get a direct ... More
An Energy Reducing Flow for Multiple-Valued FunctionsJun 20 2006By the method of discrete Morse flows, we construct an energy reducing multiple-valued function flow. The flow we get is Holder continuous with respect to the L-2 norm. We also give another way of constructing flows in some special cases, where the flow ... More
A Theorem on Frequency Function for Multiple-Valued Dirichlet Minimizing FunctionsJul 23 2006Jul 26 2006This paper discusses the frequency function of multiple-valued Dirichlet minimizing functions in the special case when the domain and range are both two dimensional. It shows that the frequency function must be of value k/2 for some nonnegative integer ... More
Analysis on Metric Space QJul 21 2006Jul 26 2006In this paper, we show that the metric space Q is a positively-curved space (PC-space) in the sense of Alexandrov. We also discuss some issues like metric tangent cone and exponential map of Q. Then we give a stratification of this metric space according ... More
A new approach to parton recombination in a QCD evolution equationSep 15 1998Parton recombination is reconsidered in perturbation theory without using the AGK cutting rules in the leading order of the recombination. We use time-ordered perturbation theory to sum the cut diagrams, which are neglected in the GLR evolution equation. ... More
Improved Bethe-Heitler formulaJan 01 2019The bremsstrahlung cross section of electron in the atomic electric field is re-derived using the time ordered perturbative theory. The results are compared with the Bethe-Heitler formula. We indicate that both the TOPT-description and a soft version ... More
Integrality structures in topological strings I: framed unknotNov 20 2016Dec 22 2016We study the open string integrality invariants (LMOV invariants) for toric Calabi-Yau 3-folds with Aganagic-Vafa brane (AV-brane). In this paper, we focus on the case of the resolved conifold with one out AV-brane in any integer framing $\tau$, which ... More
Hurwitz-Hodge integral identities from the cut-and-join equationMay 05 2013In this paper, we present some Hurwitz-Hodge integral identities which are derived from the Laplace transform of the cut-and-join equation for the orbifold Hurwitz numbers. As an application, we prove a conjecture on Hurwitz-Hodge integral proposed by ... More
Robust Design of Transmit Waveform and Receive Filter For Colocated MIMO RadarMay 29 2015Jun 05 2015We consider the problem of angle-robust joint transmit waveform and receive filter design for colocated Multiple-Input Multiple-Output (MIMO) radar, in the presence of signal-dependent interferences. The design problem is cast as a max-min optimization ... More
Nucleon spin structure III: Origins of the generalized Gerasimov-Drell-Hearn sum ruleMar 08 2015The generalized Gerasimov-Drell-Hearn (GDH) sum rule is understood based on the polarized parton distributions of the proton with the higher twist contributions. A simple parameterized formula is proposed to clearly present the contributions of different ... More
Nucleon spin structureMar 08 2015Oct 13 2015This paper contains three parts relating to the nucleon spin structure in a simple picture of the nucleon: (i) The polarized gluon distribution in the proton is dynamically predicted starting from a low scale by using a nonlinear QCD evolution equation-the ... More
A new modified Altarelli-Parisi evolution equation with parton recombination in protonJul 13 1999Oct 02 2013The coefficients of the nonlinear terms in a modified Altarelli-Parisi evolution equation with parton recombination are determined in the leading logarithmic ($Q^2$) approximation. The results are valid in the whole $x$ region and contain the translation ... More
The Super Earth-Cold Jupiter RelationsMay 07 2018Jul 05 2018We report relations between inner ($<1$ au) super Earths (planets with mass/radius between Earth and Neptune) and outer ($>1$ au) giant planets (mass $>0.3~M_{\rm J}$, or cold Jupiters) around Sun-like stars, based on data from both ground-based radial ... More
A Dynamical Model for Nuclear Structure FunctionsMay 28 1996We construct a dynamical model for the parton distributions in a nucleus by perturbative evolution of input distributions from a low starting scale. These input distributions are obtained by modifications of the corresponding free nucleon ones; the modifications ... More
Stochastic Modeling and Analysis of User-Centric Network MIMO SystemsAug 21 2018This paper provides an analytical performance characterization of both uplink (UL) and downlink (DL) user-centric network multiple-input multiple-output (MIMO) systems, where a cooperating BS cluster is formed for each user individually and the clusters ... More
Model independent investigation of the $R_{J/ψ,η_c}$ and ratios of decay widths of semileptonic $B_c$ decays into a P-wave charmoniumAug 31 2018Experimental measurements of decay branching fractions of semitaunic and semimuonic $B_c$ into $J/\psi$ has challenged the lepton flavor universality in standard model with about two standard deviations. In this paper, we first investigate the unitary ... More
Can $X(5568)$ be a tetraquark state?Feb 29 2016Apr 30 2016Very recently, the D0 collaboration has reported the observation of a narrow structure, $X(5568)$, in the decay process $X(5568)\to B^0_s\pi^\pm$ using the 10.4${\rm fb}^{-1}$ data of $p\bar p$ collision at $\sqrt s= 1.96$ TeV. This structure is of great ... More
A Pair of Planets Likely in Mean-Motion Resonance From Gravitational MicrolensingJan 14 2019We combine statistical arguments and dynamical analysis to study the orbital configuration of the microlensing planetary system OGLE-2012-BLG-0026L. This system is known to host two massive planets, with both projected close to the Eintein ring at the ... More
Augmenting WFIRST Microlensing with a Ground-based Telescope NetworkJan 12 2016Feb 08 2016Augmenting the \emph{WFIRST} microlensing campaigns with intensive observations from a ground-based network of wide-field survey telescopes would have several major advantages. First, it would enable full two-dimensional (2-D) vector microlens parallax ... More
RCR: Robust Compound Regression for Robust Estimation of Errors-in-Variables ModelAug 12 2015The errors-in-variables (EIV) regression model, being more realistic by accounting for measurement errors in both the dependent and the independent variables, is widely adopted in applied sciences. The traditional EIV model estimators, however, can be ... More
Binding effects and nuclear shadowingSep 16 1996The effects of nuclear binding on nuclear structure functions have so far been studied mainly at fixed target experiments, and there is currently much interest in obtaining a clearer understanding of this phenomenon. We use an existing dynamical model ... More
Prediction for unintegrated parton distributionsMar 18 2009Oct 13 2009Unintegrated parton distributions in the proton and nucleus are predicted by a modified DGLAP equation incorporating the shadowing corrections, which include exact energy-momentum conservation in each splitting and fusion vertices. We find that the nuclear ... More
Regularity of Dirichlet nearly minimizing multiple-valued functionsJun 07 2007In this paper, we extend the related notions of Dirichlet quasiminimizer, $\omega-$minimizer and almost minimizer to the framework of multiple-valued functions in the sense of Almgren and prove Holder regularity results. We also give examples of those ... More
Properties of the gluon recombination functionsJun 21 2004Sep 29 2013The gluon recombination functions in the twist-4 QCD evolution equations are studied at the leading logarithmic approximation using both the covariant and non-covariant methods. We justify that the infrared singularities in the twist-4 coefficient functions ... More
A Strong Formulation for Stochastic Multiple Constrained Resources Air Traffic Flow Management with ReroutesFeb 26 2019Mar 10 2019This paper addresses the air traffic flow management research problem of determining reroute, ground delay and air delay for flights using stochastic weather forecast information. The overall goal is to minimize system-wide reroute and delay costs. This ... More
Matching Using Sufficient Dimension Reduction for Causal InferenceFeb 01 2017To estimate casual treatment effects, we propose a new matching approach based on the reduced covariates obtained from sufficient dimension reduction. Compared to the original covariates and the propensity score, which are commonly used for matching in ... More
Reliable Identification of Redundant Kernels for Convolutional Neural Network CompressionDec 10 2018To compress deep convolutional neural networks (CNNs) with large memory footprint and long inference time, this paper proposes a novel pruning criterion using layer-wised Ln-norm of feature maps. Different from existing pruning criteria, which are mainly ... More
Weighted estimates for the multilinear maximal function on the upper half-spacesMay 14 2017Aug 24 2018For a general dyadic grid, we give a Calder\'{o}n-Zygmund type decomposition, which is the principle fact about the multilinear maximal function $\mathfrak{M}$ on the upper half-spaces. Using the decomposition, we study the boundedness of $\mathfrak{M}.$ ... More
The gluon condensation at high energy hadron collisionsFeb 08 2017We report that the saturation/CGC model of gluon distribution is unstable under action of the chaotic solution in a nonlinear QCD evolution equation, and it evolves to the distribution with a sharp peak at the critical momentum. We find that this gluon ... More
Nucleon spin structure II: Spin structure function $g_1^p$ at small $x$Mar 08 2015The spin structure function $g_1^p$ of the proton is studied in a two component framework, where the perturbative evolution of parton distributions and nonperturbative vector meson dominance model are used. We predict the $g_1^p$ asymmetric behavior at ... More
Particle multiplicities at LHC and deviations from limiting fragmentationMay 17 2010The pseudorapidity density of charged particles produced at LHC collisions are predicted by using two complementary production mechanisms with a set of consistent integrated and unintegrated parton distributions. We discuss the limiting fragmentation ... More
End-to-end Video-level Representation Learning for Action RecognitionNov 11 2017Apr 21 2018From the frame/clip-level feature learning to the video-level representation building, deep learning methods in action recognition have developed rapidly in recent years. However, current methods suffer from the confusion caused by partial observation ... More
Learning Gating ConvNet for Two-Stream based Methods in Action RecognitionSep 12 2017Sep 13 2017For the two-stream style methods in action recognition, fusing the two streams' predictions is always by the weighted averaging scheme. This fusion method with fixed weights lacks of pertinence to different action videos and always needs trial and error ... More
D Wave Heavy MesonsDec 06 2006Jan 09 2007We first extract the binding energy $\bar \Lambda$ and decay constants of the D wave heavy meson doublets $(1^{-},2^{-})$ and $(2^{-},3^{-})$ with QCD sum rule in the leading order of heavy quark effective theory. Then we study their pionic $(\pi, K, ... More
Decay of spin-1/2 field around Reissner-Nordstrom black holeSep 16 2003To find what influence the charge of the black hole $Q$ will bring to the evolution of the quasinormal modes, we calculate the quasinormal frequencies of the neutrino field (charge $e=0$) perturbations and those of the massless Dirac field ($e\neq 0$) ... More
A reduced-form model for level-1 limit order booksAug 31 2015Nov 14 2016One popular approach to model the limit order books dynamics of the best bid and ask at level-1 is to use the reduced-form diffusion approximations. It is well known that the biggest contributing factor to the price movement is the imbalance of the best ... More
To understand the rare decay $B_s\toπ^+π^-\ell^+\ell^-$Feb 18 2015Mar 19 2015Motivated by the LHCb measurement, we analyze the $B_s\to \pi^+\pi^-\ell^+\ell^-$ decay in the kinematics region where the pion pairs have invariant mass in the range $0.5$-$1.3$ GeV and muon pairs do not originate from a resonance. The scalar $\pi^+\pi^-$ ... More
Radiative Leptonic $B_c\to γ\ell\barν$ Decay in Effective Field Theory beyond Leading OrderJan 19 2015Apr 08 2015We study the radiative leptonic $B_c\to \gamma\ell\bar\nu$ decays in the nonrelativistic QCD effective field theory, and consider a fast-moving photon. As a result the interactions with the heavy quarks can be integrated out, and thus we arrive at a factorization ... More
A reduced-form model for level-1 limit order booksAug 31 2015Oct 19 2015One popular approach to model the limit order books dynamics of the best bid and ask at level-1 is to use the reduced-form diffusion approximations. It is well known that the biggest contributing factor to the price movement is the imbalance of the best ... More
Asymptotics for a Class of Self-Exciting Point ProcessesDec 11 2014In this paper, we study a class of self-exciting point processes. The intensity of the point process has a nonlinear dependence on the past history and time. When a new jump occurs, the intensity increases and we expect more jumps to come. Otherwise, ... More
Spin-1 charmonium-like states in QCD sum ruleSep 21 2012We study the possible spin-1 charmonium-like states by using QCD sum rule approach. We calculate the two-point correlation functions for all the local form tetraquark interpolating currents with $J^{PC}=1^{--}, 1^{-+}, 1^{++}$ and $1^{+-}$ and extract ... More
A Triangular Decomposition Algorithm for Differential Polynomial Systems with Elementary Computation ComplexityMar 15 2015In this paper, a new triangular decomposition algorithm is proposed for ordinary differential polynomial systems, which has triple exponential computational complexity. The key idea is to eliminate one algebraic variable from a set of polynomials in one ... More
Small-World Network Effect in Competing Glauber- and Kawasaki-type DynamicsNov 12 2003In this article, we investigate the competing Glauber-type and Kawasaki-type dynamics with small-world network (SWN) effect, in the framework of the Gaussian model. The Glauber-type single-spin transition mechanism with probability p simulates the contact ... More
Thermoelectric effect in a parallel double quantum dot structureDec 18 2011Dec 20 2011We discuss the thermoelectric properties assisted by the Fano effect of a parallel double quantum dot (QD) structure. By adjusting the couplings between the QDs and leads, we facilitate the nonresonant and resonant channels for the Fano interference. ... More
Possible $J^{PC} = 0^{--}$ Charmonium-like StateMar 19 2010Jun 07 2010We study the possible charmonium-like states with $J^{PC}=0^{--}, 0^{-+}$ using the tetraquark interpolating currents with the QCD sum rules approach. The extracted masses are around 4.5 GeV for the $0^{--}$ charmonium-like states and 4.6 GeV for the ... More
Sudden transition from naked atom decay to dressed atom decayJul 09 2015The studies on quantum open system play key roles not only in fundamental problems in quantum mechanics but also in quantum computing and information processes. Here we propose a scheme to use a one dimensional coupling cavity array (CCA) as an artificial ... More
A statistical classification of the unassociated gamma-ray sources in the second Fermi Large Area Telescope CatalogApr 15 2013With assistance of the identified/associated sources in the second Fermi Large Area Telescope (LAT) catalog, we analyze and resolve the spatial distribution and the distributions of the gamma-ray spectral and variability indices of the remaining 575 unassociated ... More
Interpretation of the newly observed $Ω_c^0$ resonancesApr 01 2017Jul 06 2017We study the charmed and bottomed doubly strange baryons within the heavy-quark-light-diquark framework. The two strange quarks are assumed to lie in $S$ wave and thus their total spin is 1. We calculate the mass spectra of the $S$ and $P$ wave orbitally ... More
Cooperative spontaneous emission of three identical atomsFeb 05 2013Feb 06 2013We study the influence of the distribution of atoms on the cooperative spontaneous emission by a simple model of three identical atoms. The effects of counter rotating terms are included by a unitary transformation method. By discussing two special cases ... More
Cloud No Longer a Silver Bullet, Edge to the RescueFeb 15 2018This paper takes the position that, while cognitive computing today relies heavily on the cloud, we will soon see a paradigm shift where cognitive computing primarily happens on network edges. The shift toward edge devices is fundamentally propelled both ... More
Person Re-Identification by Deep Joint Learning of Multi-Loss ClassificationMay 12 2017May 23 2017Existing person re-identification (re-id) methods rely mostly on either localised or global feature representation alone. This ignores their joint benefit and mutual complementary effects. In this work, we show the advantages of jointly learning local ... More
Linear inviscid damping for the $β$-plane equationSep 10 2018In this paper, we study the linear inviscid damping for the linearized $\beta$-plane equation around shear flows. We develop a new method to give the explicit decay rate of the velocity for a class of monotone shear flows. This method is based on the ... More
Hybrid Voltage Control in Distribution Networks Under Limited Communication RatesJul 22 2017Voltage regulation in distribution networks is challenged by increasing penetration of distributed energy resources (DERs). Thanks to advancement in power electronics, these DERs can be leveraged to regulate the grid voltage by quickly changing the reactive ... More
Matter fields near quantum critical point in (2+1)-dimensional U(1) gauge theoryJan 19 2009Nov 08 2009We study chiral phase transition and confinement of matter fields in (2+1)-dimensional U(1) gauge theory of massless Dirac fermions and scalar bosons. The vanishing scalar boson mass, $r=0$, defines a quantum critical point between the Higgs phase and ... More
Recoverability of Group Sparse Signals from Corrupted Measurements via Robust Group LassoSep 28 2015This paper considers the problem of recovering a group sparse signal matrix $\mathbf{Y} = [\mathbf{y}_1, \cdots, \mathbf{y}_L]$ from sparsely corrupted measurements $\mathbf{M} = [\mathbf{A}_{(1)}\mathbf{y}_{1}, \cdots, \mathbf{A}_{(L)}\mathbf{y}_{L}] ... More
Implementations of two-photon four-qubit Toffoli and Fredkin gates assisted by nitrogen-vacancy centersMar 01 2017It is desirable to implement an efficient quantum information process demanding fewer quantum resources. We designed two compact quantum circuits for determinately implementing four-qubit Toffoli and Fredkin gates on single-photon systems in both the ... More
Configuration dependent reflection induced by dissipated localized modesOct 05 2016We study the one photon scattering problem for a super cavity (SC) coupling with two two-level atoms. With atomic decay, we find a sudden drop in reflection at $\Delta=0$ for the two atoms in the node-antinode configuration but not in the antinode-node ... More
Can a chaotic solution in the QCD evolution equation restrain high-energy collider physics?Sep 03 2008We indicate that the random aperiodic oscillation of the gluon distributions in a modified Balisky--Fadin--Kuraev--Lipatov (BFKL) equation has positive Lyapunov exponents. This first example of chaos in QCD evolution equations, raises the sudden disappearance ... More
Phase self-aligned continuous-variable measurement-device-independent quantum key distributionMay 30 2018Jan 10 2019Continuous-variable measurement-independent-device quantum key distribution (CV-MDI-QKD) can offer high secure key rate at metropolitan distance and remove all side channel loopholes of detection as well. However, there is no complete experimental demonstration ... More
Parton recombination effect in polarized parton distributionsJun 21 2004Jan 22 2014Parton recombination corrections to the standard spin-dependent Altarelli-Parisi evolution equation are considered in a nonlinear evolution equation. The properties of this recombination equation and its relation with the spin-averaged form are discussed. ... More
Effect of atomic distribution on cooperative spontaneous emissionOct 17 2013Dec 26 2013We study cooperative single-photon spontaneous emission from N multilevel atoms for different atomic distributions in optical vector theory. Instead of the average approximation for interatomic distance or the continuum approximation (sums over atoms ... More
General Monogamy Relation between Information-Theoretic Contextuality InequalitiesFeb 04 2015We show that the perfect commutation graph is the sufficient tight condition for admitting the noncontextual description of each observable set satisfying it in the yes-no question scenario. With this condition, we propose a method for proving the monogamy ... More
Connections of geometric measure of entanglement of pure symmetric states to quantum state estimationOct 12 2010Jan 14 2011We study the geometric measure of entanglement (GM) of pure symmetric states related to rank-one positive-operator-valued measures (POVMs) and establish a general connection with quantum state estimation theory, especially the maximum likelihood principle. ... More
Large deviation principles for the stochastic quasi-geostrophic equationApr 28 2012Mar 24 2013In this paper we establish the large deviation principle for the stochastic quasi-geostrophic equation in the subcritical case with small multiplicative noise. The proof is mainly based on the stochastic control and weak convergence approach. Some analogous ... More
Feature Screening via Distance Correlation LearningMay 21 2012Jun 01 2012This paper is concerned with screening features in ultrahigh dimensional data analysis, which has become increasingly important in diverse scientific fields. We develop a sure independence screening procedure based on the distance correlation (DC-SIS, ... More
Gluon quasidistribution function at one loopAug 08 2017Feb 05 2018We study the unpolarized gluon quasidistribution function in the nucleon at one loop level in the large momentum effective theory. For the quark quasidistribution, power law ultraviolet divergences arise in the cut-off scheme and an important observation ... More
Dependence of Small Planet Frequency on Stellar Metallicity Hidden by Their PrevalenceMay 13 2016Sep 15 2016The dependence of gas giant planet occurrence rate on stellar metallicity has been firmly established. We extend this so-called planet-metallicity correlation to broader ranges of metallicities and planet masses/radii. In particular, we assume that the ... More
Galton's Family Heights Data RevisitedAug 12 2015Galton's family heights data has been a preeminent historical dataset in regression analysis, on which the original model and basic results have survived the close scrutiny of statisticians for 125 years. However by revisiting Galton's family data, we ... More
Fast Scatter Artifacts Correction for Cone-Beam CT without System Modification and Repeat ScanJan 19 2015We provide a fast and accurate scatter artifacts correction algorithm for cone beam CT (CBCT) imaging. The method starts with an estimation of coarse scatter profile for a set of CBCT images. A total-variation denoising algorithm designed specifically ... More
Revisiting the Long-Period Transiting Planets from KeplerJan 07 2019Mar 05 2019Currently, we have only limited means to probe the presence of planets at large orbital separations. Foreman-Mackey et al. (2016, FM16) searched for long-period transiting planets in the Kepler light curves using an automated pipeline. Here, we apply ... More
Kepler-730b is probably a hot Jupiter with a small companionAug 31 2018Here we draw attention to a candidate system with one hot Jupiter and one small, nearby companion, revealed by the recent Kepler data release (DR25). The hot Jupiter, Kepler-730b, has radius $R_{\rm p}=11.36^{+1.14}_{-0.98}~R_\oplus$ and orbital period ... More
A new perspective on gluon distribution at small xMar 29 2007Mar 09 2016The corrections of the gluon fusion to the BFKL equation in a unified partonic framework are studied. This modified BFKL equation predicts a stronger shadowing, which suppresses the gluon density and even leads to the gluon disappearance below the saturation ... More
Saturation and Wilson Line DistributionsJul 03 2002Aug 09 2002We introduce a Wilson line distribution function bar{W}_tau(v) to study gluon saturation at small Feynman x_F, or large tau=ln(1/x_F). This new distribution can be obtained from the distribution W_tau(alpha) of the Color Glass Condensate model and the ... More
Nuclear enhanced power corrections to DIS structure functionsOct 03 2001We calculate nuclear enhanced power corrections to structure functions measured in deeply inelastic lepton-nucleus scattering in Quantum Chromodynamics (QCD). We find that the nuclear medium enhanced power corrections at order of $O(\alpha_s/Q^2)$ enhance ... More
Optical Flow Based Real-time Moving Object Detection in Unconstrained ScenesJul 13 2018Real-time moving object detection in unconstrained scenes is a difficult task due to dynamic background, changing foreground appearance and limited computational resource. In this paper, an optical flow based moving object detection framework is proposed ... More
The decay of $Λ_b\rightarrow p~K^-$ in QCD factorization approachMar 09 2016May 09 2016With only the tree level operator, the decay of $\Lambda_b\rightarrow pK$ is predicted to be one order smaller than the experimental data. The QCD penguin effects should be taken into account. In this paper, we explore the one-loop QCD corrections to ... More
The semi-leptonic and non-leptonic weak decays of $Λ_b^0$Mar 04 2018The recent experimental developments require a more precise theoretical study of weak decays of heavy baryon $\Lambda_b^0$. In this work, we provide an updated and systematic analysis of both the semi-leptonic and nonleptonic decays of $\Lambda^0_b$ into ... More
Optical Flow Based Online Moving Foreground AnalysisNov 18 2018Obtained by moving object detection, the foreground mask result is unshaped and can not be directly used in most subsequent processes. In this paper, we focus on this problem and address it by constructing an optical flow based moving foreground analysis ... More
An Efficient Optical Flow Based Motion Detection Method for Non-stationary ScenesNov 18 2018Nov 21 2018Real-time motion detection in non-stationary scenes is a difficult task due to dynamic background, changing foreground appearance and limited computational resource. These challenges degrade the performance of the existing methods in practical applications. ... More
Harmonious Attention Network for Person Re-IdentificationFeb 22 2018Existing person re-identification (re-id) methods either assume the availability of well-aligned person bounding box images as model input or rely on constrained attention selection mechanisms to calibrate misaligned images. They are therefore sub-optimal ... More
Novel rotating hairy black hole in (2+1)-dimensionsMay 26 2013Jun 03 2013We present some novel rotating hairy black hole metric in $(2+1)$ dimensions, which is an exact solution to the field equations of the Einstein-scalar-AdS theory with a non-minimal coupling. The scalar potential is determined by the metric ansatz and ... More
Strong solutions for SPDE with locally monotone coefficients driven by Lévy noiseAug 01 2011May 21 2013Motivated by applications to a manifold of semilinear and quasilinear stochastic partial differential equations (SPDEs) we establish the existence and uniqueness of strong solutions to coercive and locally monotone SPDEs driven by L\'{e}vy processes. ... More
Carrier concentration dependence of optical Kerr nonlinearity in indium tin oxide filmsApr 28 2006Optical Kerr nonlinearity (n2) in n-type indium tin oxide (ITO) films coated on glass substrates has been measured using Z-scans with 200-fs laser pulses at wavelengths ranging from 720 to 780 nm. The magnitudes of the measured nonlinearity in the ITO ... More
Decentralized Dynamic Optimization for Power Network Voltage ControlJul 23 2016Voltage control in power distribution networks has been greatly challenged by the increasing penetration of volatile and intermittent devices. These devices can also provide limited reactive power resources that can be used to regulate the network-wide ... More
Using Deep Neural Networks to Automate Large Scale Statistical Analysis for Big Data ApplicationsAug 09 2017Statistical analysis (SA) is a complex process to deduce population properties from analysis of data. It usually takes a well-trained analyst to successfully perform SA, and it becomes extremely challenging to apply SA to big data applications. We propose ... More
Unparticle Physics and A_{FB}^b on the Z poleAug 06 2007Jan 03 2008An attempt has been made to address the 3\sigma anomaly of the forward-backward asymmetry of b quark in LEP data via an unparticle sector. For most part of the parameter space except certain particular regions, the anomaly could not be explained away ... More
A High-resolution DOA Estimation Method with a Family of Nonconvex PenaltiesDec 06 2017The low-rank matrix reconstruction (LRMR) approach is widely used in direction-of-arrival (DOA) estimation. As the rank norm penalty in an LRMR is NP-hard to compute, the nuclear norm (or the trace norm for a positive semidefinite (PSD) matrix) has been ... More
Gridless Two-dimensional DOA Estimation With L-shaped Array Based on the Cross-covariance MatrixDec 05 2017The atomic norm minimization (ANM) has been successfully incorporated into the two-dimensional (2-D) direction-of-arrival (DOA) estimation problem for super-resolution. However, its computational workload might be unaffordable when the number of snapshots ... More
Scalable low dimensional manifold model in the reconstruction of noisy and incomplete hyperspectral imagesMay 18 2016Mar 23 2018We present a scalable low dimensional manifold model for the reconstruction of noisy and incomplete hyperspectral images. The model is based on the observation that the spatial-spectral blocks of a hyperspectral image typically lie close to a collection ... More
From EMC- and Cronin-effects to signals of quark-gluon plasmaDec 20 2010Jan 28 2013The EMC- and Cronin-effects are explained by a unitarized evolution equation, where the shadowing and antishadowing corrections are dynamically produced by gluon fusions. For this sake, an alternative form of the GLR-MQ-ZRS equation is derived. The resulting ... More
Can a chaos term in the QCD evolution equation restrain high-energy collider physics?Apr 30 2008We indicate that the random aperiodic oscillation of the gluon distributions in a modified BFKL equation has the positive Lyapunov exponents. This first example of chaos in QCD evolution equations, raises the sudden disappearance of the gluon distributions ... More
Multiqubit Greenberger-Horne-Zeilinger state generated by synthetic magnetic field in circuit QEDApr 07 2017We propose a scheme to generate Greenberger-Horne-Zeilinger (GHZ) state for N superconducting qubits in a circuit QED system. By sinusoidally modulating the qubit-qubit coupling, a synthetic magnetic field has been made which broken the time-reversal ... More
Analytical result on the supercurrent through a superconductor/quantum-dot/superconductor junctionNov 26 2001Nov 30 2001We present an analytical result for the supercurrent across a superconductor/quantum-dot/superconductor junction. By converting the current integration into a special contour integral, we can express the current as a sum of the residues of poles. These ... More
Revisiting the Long-Period Transiting Planets from KeplerJan 07 2019Currently, we have only limited means to probe the presence of planets at large orbital separations. Foreman-Mackey et al. (2016, FM16) searched for long-period transiting planets in the Kepler light curves using an automated pipeline. Here, we apply ... More
Sparse Adversarial Perturbations for VideosMar 07 2018Although adversarial samples of deep neural networks (DNNs) have been intensively studied on static images, their extensions in videos are never explored. Compared with images, attacking a video needs to consider not only spatial cues but also temporal ... More
The chaotic effects in a nonlinear QCD evolution equationMar 14 2016Aug 05 2016The corrections of gluon fusion to the DGLAP and BFKL equations are discussed in a united partonic framework. The resulting nonlinear evolution equations are the well-known GLR-MQ-ZRS equation and a new evolution equation. Using the available saturation ... More