Results for "Ning Zhang"

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A class of holomorphic self-maps of the loop space of P^nJul 12 2014The loop space LP^n of the complex projective space P^n consisting of all C^k or Sobolev W^{k,p} maps S^1 \to P^n is an infinite dimensional complex manifold. We identify a class of holomorphic self-maps of LP^n, including all automorphisms.
The Picard group of the loop space of the Riemann sphereFeb 28 2006Jul 12 2014The loop space of the Riemann sphere consisting of all C^k or Sobolev W^{k,p} maps from the circle S^1 to the sphere is an infinite dimensional complex manifold. We compute the Picard group of holomorphic line bundles on this loop space as an infinite ... More
Aleksandrov projection problem for convex lattice setsFeb 17 2016Let $K$ and $L$ be origin-symmetric convex integer polytopes in $\mathbb{R}^n$. We study a discrete analogue of the Aleksandrov projection problem. If for every $u\in \mathbb{Z}^n$, the sets $(K\cap \mathbb{Z}^n)|u^\perp$ and $(L\cap \mathbb{Z}^n)|u^\perp$ ... More
Holomorphic line bundles on the loop space of the Riemann sphereOct 02 2002The loop space LP_1 of the Riemann sphere consisting of all C^k or Sobolev W^{k,p} maps from the circle S^1 to P_1 is an infinite dimensional complex manifold. The loop group LPGL(2,C) acts on LP_1. We prove that the group of LPGL(2,C) invariant holomorphic ... More
Isocapacity Estimates for Hessian OperatorsMay 03 2013Apr 13 2014Through a new powerful potential-theoretic analysis, this paper is devoted to discovering the geometrically equivalent isocapacity forms of Chou-Wang's Sobolev type inequality and Tian-Wang's Moser-Trudinger type inequality for the fully nonlinear $1\leq ... More
Limiting Weak Type Estimate for Capacitary Maximal FunctionNov 21 2012A capacitary analogue of the limiting weak type estimate of P. Janakiraman for the Hardy-Littlewood maximal function of an L1-function is discovered.
Ore- and Fan-type heavy subgraphs for Hamiltonicity of 2-connected graphsMar 18 2012Apr 18 2013Bedrossian characterized all pairs of forbidden subgraphs for a 2-connected graph to be Hamiltonian. Instead of forbidding some induced subgraphs, we relax the conditions for graphs to be Hamiltonian by restricting Ore- and Fan-type degree conditions ... More
Analysis on Cohort Effects in view of Differential Geometry and its ApplicationsFeb 21 2017This paper analyzes birth cohort effects and develops an approach which is based on differential geometry to identify and measure cohort effects in mortality data sets. The measurement is quantitative and provides a potential method to compare cohort ... More
Mortality cohort effect detection and measurement based on differential geometryMar 31 2015Apr 02 2015This paper analyzes mortality cohort effect of birth year and develops an approach to identify and measure cohort effects in mortality data set. The approach is based on differential geometry and leads to an explicit result which can describe how strong ... More
A comparison theorem under sublinear expectations and related limit theoremsOct 04 2017In this paper, on the sublinear expectation space, we establish a comparison theorem between independent and convolutionary random vectors, which states that the partial sums of those two sequences of random vectors are identically distributed. Under ... More
A note on heterochromatic cycles of length 4 in edge-colored graphsJan 18 2012Let $G$ be an edge-colored graph. A heterochromatic cycle of $G$ is one in which every two edges have different colors. For a vertex $v\in V(G)$, let $CN(v)$ denote the set of colors which are assigned to the edges incident to $v$. In this note we prove ... More
Non-central sections of convex bodiesSep 28 2015We study the following open problem, suggested by Barker and Larman. Let $K$ and $L$ be convex bodies in $\mathbb R^n$ ($n\ge 2$) that contain a Euclidean ball $B$ in their interiors. If $\mathrm{vol}_{n-1}(K\cap H) = \mathrm{vol}_{n-1}(L\cap H)$ for ... More
Convergence of ground state solutions for nonlinear Schrödinger equations on graphsMay 11 2017We consider the nonlinear Schr\"{o}dinger equation $-\Delta u+(\lambda a(x)+1)u=|u|^{p-1}u$ on a locally finite graph $G=(V,E)$. We prove via the Nehari method that if $a(x)$ satisfies certain assumptions, for any $\lambda>1$, the equation admits a ground ... More
Nanoscale Self-Healing Mechanisms in Shape Memory CeramicsDec 28 2018Shape memory (SM) ceramics, such as yttria-stabilized tetragonal zirconia (YSTZ), are a unique family of SM materials that offer unique properties including ultra-high operating temperature, and high resistance to chemical corrosion and oxidation. However, ... More
Understanding Specimen- and Grain-Size Effects on Nanoscale Plastic Deformation Mechanisms and Mechanical Properties of Polycrystalline Yttria-Stabilized Tetragonal Zirconia NanopillarsDec 28 2018Specimen- and grain-size effects on nanoscale plastic deformation mechanisms and mechanical properties of polycrystalline yttria-stabilized tetragonal zirconia (YSTZ) nanopillars are studied by molecular dynamics simulations. Through uniaxial compression ... More
A Linearly Convergent Majorized ADMM with Indefinite Proximal Terms for Convex Composite Programming and Its ApplicationsJun 06 2017Feb 07 2018This paper aims to study a majorized alternating direction method of multipliers with indefinite proximal terms (iPADMM) for convex composite optimization problems. We show that the majorized iPADMM for 2-block convex optimization problems converges globally ... More
Danger-aware Weighted Advantage Composition of Deep Reinforcement Learning for Robot NavigationSep 11 2018Self-navigation, referring to automatically reaching the goal while avoiding collision with obstacles, is a fundamental skill of mobile robots. Currently, Deep Reinforcement Learning (DRL) can enable the robot to navigate in a more complex environment ... More
The Modulation of de Haas-van Alphen Effect in Graphene by Electric FieldMar 31 2010This paper is to explore the de Haas-van Alphen effect $(dHvA)$ of graphene in the presence of an in-plane uniform electric field. Three major findings are yielded. First of all, the electric field is found to modulate the de Haas-van Alphen magnetization ... More
Facial Makeup Transfer Combining Illumination TransferJul 08 2019To meet the women appearance needs, we present a novel virtual experience approach of facial makeup transfer, developed into windows platform application software. The makeup effects could present on the user's input image in real time, with an only single ... More
Watermark retrieval from 3D printed objects via synthetic data trainingMay 23 2019We present a deep neural network based method for the retrieval of watermarks from images of 3D printed objects. To deal with the variability of all possible 3D printing and image acquisition settings we train the network with synthetic data. The main ... More
Signature of Granular Structures by Single-Event Intensity InterferometryNov 11 2004The observation of a granular structure in high-energy heavy-ion collisions can be used as a signature for the quark-gluon plasma phase transition, if the phase transition is first order in nature. We propose methods to detect a granular structure by ... More
Fully Computable Error Bounds for Eigenvalue ProblemJan 07 2016Jun 19 2016This paper is concerned with the computable error estimates for the eigenvalue problem which is solved by the general conforming finite element methods on the general meshes. Based on the computable error estimate, we can give an asymptotically lower ... More
Time-Critical Influence Maximization in Social Networks with Time-Delayed Diffusion ProcessApr 13 2012Jul 13 2015Influence maximization is a problem of finding a small set of highly influential users, also known as seeds, in a social network such that the spread of influence under certain propagation models is maximized. In this paper, we consider time-critical ... More
Squeezed back-to-back correlations of bosons with nonzero widths in relativistic heavy-ion collisionsApr 10 2019Jul 13 2019We derive the formulas for calculating the squeezed back-to-back correlation (SBBC) between a boson and antiboson with nonzero width produced in relativistic heavy-ion collisions. The SBBCs of $D^0$ and $\phi$ mesons with finite in-medium widths are studied. ... More
Influence of in-medium mass width on Hanbury Brown-Twiss correlation strengthJul 21 2019The interactions of particles with medium may lead to a nonzero in-medium mass width of the particles and cause them to have different masses in the medium. In this letter, we investigate the influence of the in-medium mass width on the strength of Hanbury ... More
Knowledge-Guided Deep Fractal Neural Networks for Human Pose EstimationMay 05 2017Aug 08 2017Human pose estimation using deep neural networks aims to map input images with large variations into multiple body keypoints which must satisfy a set of geometric constraints and inter-dependency imposed by the human body model. This is a very challenging ... More
An Eigenwise Parallel Augmented Subspace Method for Eigenvalue ProblemsAug 27 2019A type of parallel augmented subspace scheme for eigenvalue problems is proposed by using coarse space in the multigrid method. With the help of coarse space in multigrid method, solving the eigenvalue problem in the finest space is decomposed into solving ... More
Degree conditions restricted to induced paths for hamiltonicity of claw-heavy graphsJun 18 2015Broersma and Veldman proved that every 2-connected claw-free and $P_6$-free graph is hamiltonian. Chen et al. extended this result by proving every 2-connected claw-heavy and $P_6$-free graph is hamiltonian. On the other hand, Li et al. constructed a ... More
Unsupervised Learning of Disentangled and Interpretable Representations from Sequential DataSep 22 2017We present a factorized hierarchical variational autoencoder, which learns disentangled and interpretable representations from sequential data without supervision. Specifically, we exploit the multi-scale nature of information in sequential data by formulating ... More
On the sure screening properties of iteratively sure independence screening algorithmsDec 04 2018Apr 03 2019This paper theoretically studies the sure screening property for some variants of the famous iteratively sure independence screening (ISIS) algorithm proposed by Fan and Lv (2008) more than a decade ago.
The Novel Symmetry Constraint and Binary Nonlinearization of the Super Generalized Broer-Kaup Hierarchy with Self-consistent Sources and Conservation LawsOct 19 2018The super generalized Broer-Kaup(gBK) hierarchy and its super Hamiltonian structure are established based on a loop super Lie algebra and super-trace identity. Then the self-consistent sources, the conservation laws, the novel symmetry constraint and ... More
Weakly Supervised Audio Source Separation via Spectrum Energy Preserved Wasserstein LearningNov 11 2017May 17 2018Separating audio mixtures into individual instrument tracks has been a long standing challenging task. We introduce a novel weakly supervised audio source separation approach based on deep adversarial learning. Specifically, our loss function adopts the ... More
Degree and neighborhood intersection conditions restricted to induced subgraphs ensuring Hamiltonicity of graphsDec 28 2012Apr 14 2014Let claw be the graph $K_{1,3}$. A graph $G$ on $n\geq 3$ vertices is called \emph{o}-heavy if each induced claw of $G$ has a pair of end-vertices with degree sum at least $n$, and 1-heavy if at least one end-vertex of each induced claw of $G$ has degree ... More
Global classical solutions to a Compressible Model for Micro-Macro Polymeric Fluids Near EquilibriumJun 27 2017In this paper we first employ the energetic variational method to derive a micro-macro model for compressible polymeric fluids. This model is a coupling of isentropic compressible Navier-Stokes equations with a nonlinear Fokker-Planck equation. We then ... More
Chaoticity Parameter Lambda in Hanbury-Brown Twiss InterferometryAug 14 2007Oct 15 2007In Hanbury-Brown-Twiss interferometry measurements using identical bosons, the chaoticity parameter lambda has been introduced phenomenologically to represent the momentum correlation function at zero relative momentum. It is useful to study an exactly ... More
Dynamic Channel Access for Energy Efficient Data Gathering in Cognitive Radio Sensor NetworksJul 22 2015Wireless sensor networks (WSNs) operating in the license-free spectrum suffer from uncontrolled interference as those spectrum bands become increasingly crowded. The emerging cognitive radio sensor networks (CRSNs) provide a promising solution to address ... More
Cyclability of $id$-cycles in graphsJan 07 2016Let $G$ be a graph on $n$ vertices and $C'=v_0v_1\cdots v_{p-1}v_0$ a vertex sequence of $G$ with $p\geq 3$ ($v_i\neq v_j$ for all $i,j=0,1,\ldots,p-1$, $i\neq j$). If for any successive vertices $v_i$, $v_{i+1}$ on $C'$, either $v_iv_{i+1}\in E(G)$ or ... More
Electromagnetic Lens-focusing Antenna Enabled Massive MIMO: Performance Improvement and Cost ReductionDec 03 2013Mar 26 2014Massive multiple-input multiple-output (MIMO) techniques have been recently advanced to tremendously improve the performance of wireless communication networks. However, the use of very large antenna arrays at the base stations (BSs) brings new issues, ... More
The initial-boundary value problems for the coupled derivative nonlinear Schrödinger equations on the half-lineDec 16 2018The unified transform method is used to analyze the initial-boundary value problem for the coupled derivative nonlinear Schr\"odinger(CDNLS) equations on the half-line. In this paper, we assume that the solution $u(x,t)$ and $v(x,t)$ of CDNLS equations ... More
Grünbaum's inequality for sectionsNov 03 2017We show \begin{align*} \frac{ \int_{E \cap \theta^+} f(x) dx }{ \int_E f(x) dx } \geq \left(\frac{k \gamma+1}{(n+1) \gamma+1}\right)^{\frac{k \gamma+1}{\gamma}} \end{align*} for all $k$-dimensional subspaces $E\subset\mathbb{R}^n$, $\theta\in E\cap S^{n-1}$, ... More
Long paths and cycles passing through specified vertices under the average degree conditionSep 20 2011Oct 02 2011Let $G$ be a $k$-connected graph with $k\geq 2$. In this paper we first prove that: For two distinct vertices $x$ and $z$ in $G$, it contains a path passing through its any $k-2$ {specified} vertices with length at least the average degree of the vertices ... More
Simultaneous transverse and longitudinal oscillations in a quiescent prominence triggered by a coronal jetNov 02 2017In this paper, we report our multiwavelength observations of the simultaneous transverse and longitudinal oscillations in a quiescent prominence on 2015 June 29. A C2.4 flare took place in active region 12373, which was associated with a pair of short ... More
Blockchain for Internet of Things: A SurveyJun 01 2019Sep 01 2019Internet of Things (IoT) is reshaping the incumbent industry to smart industry featured with data-driven decision-making. However, intrinsic features of IoT result in a number of challenges such as decentralization, poor interoperability, privacy and ... More
An Efficient Multigrid Method for Ground State Solution of Bose-Einstein CondensatesNov 04 2017Dec 11 2017An efficient multigrid method is proposed to compute the ground state solution of Bose-Einstein condensations by the finite element method based on the combination of the multigrid method for nonlinear eigenvalue problem and an efficient implementation ... More
Single-Event Handbury-Brown-Twiss InterferometryFeb 12 2007Large spatial density fluctuations in high-energy heavy-ion collisions can come from many sources: initial transverse density fluctuations, non-central collisions, phase transitions, surface tension, and fragmentations. The common presence of some of ... More
Total Hadron-Hadron Cross Sections at High EnergiesApr 03 2003Jul 02 2003We calculate total hadron-hadron cross sections at high energies using the Low-Nussinov two-gluon model of the Pomeron. The gluon exchange is represented by a phenomenological potential including screened color-Coulomb, screened confining, and spin-spin ... More
Unsupervised Domain Adaptation for Robust Speech Recognition via Variational Autoencoder-Based Data AugmentationJul 19 2017Sep 22 2017Domain mismatch between training and testing can lead to significant degradation in performance in many machine learning scenarios. Unfortunately, this is not a rare situation for automatic speech recognition deployments in real-world applications. Research ... More
Learning Latent Representations for Speech Generation and TransformationApr 13 2017Sep 22 2017An ability to model a generative process and learn a latent representation for speech in an unsupervised fashion will be crucial to process vast quantities of unlabelled speech data. Recently, deep probabilistic generative models such as Variational Autoencoders ... More
Recurrent Neural Network Encoder with Attention for Community Question AnsweringMar 23 2016We apply a general recurrent neural network (RNN) encoder framework to community question answering (cQA) tasks. Our approach does not rely on any linguistic processing, and can be applied to different languages or domains. Further improvements are observed ... More
Hydrodynamic limits of the kinetic self-organized modelsAug 19 2015The self-organized hydrodynamic models can be derived from the kinetic version of the Vicsek model. The formal derivations and local well-posedness of the macroscopic equations are done by Degond and his collaborators. In this paper, we rigorously justify ... More
Optimal Relay Probing in Millimeter Wave Cellular Systems with Device-to-Device RelayingOct 08 2015Millimeter-wave (mmWave) cellular systems are power-limited and susceptible to blockages. As a result, mmWave connectivity will be likely to be intermittent. One promising approach to increasing mmWave connectivity and range is to use relays. Device-to-device ... More
A Riemann-Hilbert Approach to the Kundu-Eckhaus Equation on the half-LineNov 04 2017Nov 23 2017In this paper, we consider the initial-boundary value problem of the Kundu-Eckhaus equation on the half-line by using of the Fokas unified transform method. Assuming that the solution $u(x,t)$ exists, we show that it can be expressed in terms of the unique ... More
A Riemann-Hilbert Approach to the Complex Sharma-Tasso-Olver Equation on the Half LineApr 11 2017In this paper, we use the Fokas method to analyze the complex Sharma-Tasso-Olver(cSTO) equation on the half line. We show that it can be represented in terms of the solution of a matrix RHP formulated in the plane of the complex spectral parameter {\lambda}. ... More
Observational Evidences of Electron-driven Evaporation in two Solar FlaresSep 24 2015We have explored the relationship between hard X-ray (HXR) emissions and Doppler velocities caused by the chromospheric evaporation in two X1.6 class solar flares on 2014 September 10 and October 22, respectively. Both events display double ribbons and ... More
Knowledge Projection for Deep Neural NetworksOct 26 2017While deeper and wider neural networks are actively pushing the performance limits of various computer vision and machine learning tasks, they often require large sets of labeled data for effective training and suffer from extremely high computational ... More
Explanation of the RHIC HBT Puzzle by a Granular Source of Quark-Gluon Plasma DropletsFeb 12 2007We present a review on the explanation of the RHIC HBT puzzle by a granular pion-emitting source of quark-gluon plasma droplets. The evolution of the droplet is described by relativistic hydrodynamics with an equation of state suggested by lattice gauge ... More
Riemann-Hilbert method and soliton solutions in the system of two-component Hirota equationsSep 19 2018In this letter we examine the two-component Hirota (TH) equations which describes the pulse propagation in a coupled fiber with higher-order dispersion and self-steepening. As the TH equations is a complete integrable system, which admits a $3\times 3$ ... More
Electron spin-orbit interaction in helically coiled carbon nanotubeFeb 28 2014Recent theoretical and experimental works on carbon nanotubes (CNTs) have revealed that spin-orbit interaction (SOI) is more robust than it was thought. Motivated by this, we investigate the SOI in helically coiled CNTs. Calculations are performed within ... More
Cost-Effective Cache Deployment in Mobile Heterogeneous NetworksJul 13 2017This paper investigates one of the fundamental issues in cache-enabled heterogeneous networks (HetNets): how many cache instances should be deployed at different base stations, in order to provide guaranteed service in a cost-effective manner. Specifically, ... More
Riemann-Hilbert approach for a mixed coupled nonlinear Schrödinger system and its soliton solutionsSep 22 2018In this work, we examine the integrable mixed coupled nonlinear Schr\"odinger (mCNLS) system, which describe the propagation of an optical pulse in a birefringent optical fiber. By the Riemann-Hilbert(RH) approach, the N-soliton solutions of the mCNLS ... More
Self-Sustaining Caching Stations: Towards Cost-Effective 5G-Enabled Vehicular NetworksJun 26 2017In this article, we investigate the cost-effective 5G-enabled vehicular networks to support emerging vehicular applications, such as autonomous driving, in-car infotainment and location-based road services. To this end, self-sustaining caching stations ... More
A Proximal Point Dual Newton Algorithm for Solving Group Graphical Lasso ProblemsJun 11 2019Undirected graphical models have been especially popular for learning the conditional independence structure among a large number of variables where the observations are drawn independently and identically from the same distribution. However, many modern ... More
On bodies with congruent sections or projectionsNov 28 2017In this paper, we construct two convex bodies $K$ and $L$ in $\mathbb{R}^n$, $n\geq 3$, such that their projections $K|H$, $L|H$ onto every subspace $H$ are congruent, but nevertheless, $K$ and $L$ do not coincide up to a translation or a reflection in ... More
Accelerating an adiabatic process by nonlinear sweepingJan 10 2012We investigate the acceleration of an adiabatic process with the same survival probability of the ground state by sweeping a parameter nonlinearly, fast in the wide gap region and slow in the narrow gap region, as contrast to the usual linear sweeping. ... More
An Optimal Stopping Approach to Cell Selection in 5G NetworksNov 19 2018May 21 2019Initial cell search and selection is one of the first few essential steps that a mobile device must perform to access a mobile network. The distinct features of 5G bring new challenges to the design of initial cell search and selection. In this paper, ... More
Throughput Optimal Listen-Before-Talk for Cellular in Unlicensed SpectrumOct 11 2016The effort to extend cellular technologies to unlicensed spectrum has been gaining high momentum. Listen-before-talk (LBT) is enforced in the regions such as European Union and Japan to harmonize coexistence of cellular and incumbent systems in unlicensed ... More
On Performance of Peer Review for Academic Journals: Analysis Based on Distributed Parallel SystemJun 01 2018Aug 21 2019A simulation model based on parallel systems is established, aiming to explore the relation between the number of submissions and the overall standard of academic journals within a similar discipline under peer review. The model can effectively simulate ... More
Chemical network reduction in protoplanetary disksJan 15 2019Protoplanetary disks (PPDs) are characterized by different kinds of gas dynamics and chemistry, which are coupled via ionization, heating and cooling processes, as well as advective and turbulent transport. However, directly coupling gas dynamics with ... More
Chaoticity parameter $λ$ in two-pion interferometry in an expanding boson gas modelOct 16 2014We investigate the chaoticity parameter $\lambda$ in two-pion interferometry in an expanding boson gas model. The degree of Bose-Einstein condensation of identical pions, density distributions, and Hanbury-Brown-Twiss (HBT) correlation functions are calculated ... More
Discriminative Relational Topic ModelsOct 09 2013Many scientific and engineering fields involve analyzing network data. For document networks, relational topic models (RTMs) provide a probabilistic generative process to describe both the link structure and document contents, and they have shown promise ... More
Premature Switching in Graphene Josephson TransistorsMar 04 2009We investigate electronic transport in single layer graphene coupled to superconducting electrodes. In these Josephson transistors, we observe significant suppression in the critical current Ic and large variation in the product IcRn in comparison to ... More
Superior Structural, Elastic and Electronic Properties of 2D Titanium Nitride MXenes Over Carbide MXenes: A Comprehensive First Principles StudyFeb 19 2018Jul 05 2018The structural, elastic and electronic properties of two-dimensional (2D) titanium carbide/nitride based pristine (Tin+1Cn/Tin+1Nn) and functionalized MXenes (Tin+1CnT2/Tin+1NnT2, T stands for the terminal groups: -F, -O and -OH, n = 1, 2, 3) are investigated ... More
Catalyzing Cloud-Fog Interoperation in 5G Wireless Networks: An SDN ApproachDec 15 2016The piling up storage and compute stacks in cloud data center are expected to accommodate the majority of internet traffic in the future. However, as the number of mobile devices significantly increases, getting massive data into and out of the cloud ... More
Fine-grained pose prediction, normalization, and recognitionNov 22 2015Pose variation and subtle differences in appearance are key challenges to fine-grained classification. While deep networks have markedly improved general recognition, many approaches to fine-grained recognition rely on anchoring networks to parts for ... More
Magnetic Vortex with Skyrmionic Core in Thin Nanodisk of the Chiral MagnetsOct 10 2012Dec 21 2012A type of vortex spin texture with skyrmionic core and a series of circle spin stripes was obtained in thin nanodisk of the chiral magnets with Dzyaloshinskii-Moriya interaction and uniaxial anisotropy by means of micromagnetic approach and Monte Carlo ... More
Measurement of frequency sensitivity coefficient and evaluation of type-B uncertainty for atomic frequency standard based on statistical correlation of noiseSep 10 2019Precise measurement of frequency sensitivity coefficients (FSCs) of some physical effects contributing to uncertainty is an important work in type-B uncertainty (u_B) evaluation of atomic frequency standards. We proposed a method based on statistical ... More
Pion Transverse Momentum Spectrum, Elliptic Flow and Interferometry in the Granular Source Model in Ultra-Relativistic Heavy Ion CollisionsJan 15 2015We systematically investigate the pion transverse momentum spectrum, elliptic flow, and Hanbury-Brown-Twiss (HBT) interferometry in the granular source model of quark-gluon plasma droplets in ultra-relativistic heavy ion collisions. The granular source ... More
Fluctuations of pion flow harmonics and HBT correlation functions in ultrarelativistic heavy ion collisionsMay 27 2014Feb 10 2015We investigate the fluctuations of pion elliptic flow, triangular flow, and Hanbury-Brown-Twiss (HBT) correlation functions for the hydrodynamic sources with fluctuating initial conditions in the heavy ion collisions of the Au-Au at $\sqrt{s_{NN}}=200$ ... More
Quasi-periodic pulsations with periods that change depending on whether the pulsations have thermal or nonthermal componentsDec 08 2016Context. Quasi-periodic pulsations (QPPs) typically display periodic and regular peaks in the light curves during the flare emissions. Sometimes, QPPs show multiple periods at the same wavelength. However, changing periods in various channels are rare. ... More
Joint Audio-Video Fingerprint Media Retrieval Using Rate-Coverage OptimizationSep 05 2016In this work, we propose a joint audio-video fingerprint Automatic Content Recognition (ACR) technology for media retrieval. The problem is focused on how to balance the query accuracy and the size of fingerprint, and how to allocate the bits of the fingerprint ... More
Rainbow triangles in edge-colored graphsDec 27 2012Sep 25 2013Let $G$ be an edge-colored graph. The color degree of a vertex $v$ of $G$, is defined as the number of colors of the edges incident to $v$. The color number of $G$ is defined as the number of colors of the edges in $G$. A rainbow triangle is one in which ... More
Induced subgraphs with large degrees at end-vertices for hamiltonicity of claw-free graphsSep 16 2014Jan 19 2016A graph is called \emph{claw-free} if it contains no induced subgraph isomorphic to $K_{1,3}$. Matthews and Sumner proved that a 2-connected claw-free graph $G$ is hamiltonian if every vertex of it has degree at least $(|V(G)|-2)/3$. At the workshop C\&C ... More
Chaoticity and Coherence in Bose-Einstein Condensation and CorrelationsJan 19 2015Jan 23 2015We review the properties of chaoticity and coherence in Bose-Einstein condensation and correlations, for a dense boson system in its mean-field represented approximately by a harmonic oscillator potential. The order parameter and the nature of the phase ... More
Future prospects of mass-degenerate Higgs bosons in the $CP$-conserving two-Higgs-doublet modelDec 04 2017Jun 23 2018The scenario of two mass-degenerate Higgs bosons within the general two-Higgs-doublet model (2HDM) is revisited. We focus on the global picture when two $CP$-even Higgs bosons of $h$ and $H$ are nearly mass-degenerate. A global fit to the signal strength ... More
Enforcing Private Data Usage Control with Blockchain and Attested Off-chain Contract ExecutionApr 15 2019The abundance of rich varieties of data is enabling many transformative applications of big data analytics that have profound societal impacts. However, there are also increasing concerns regarding the improper use of individual users' private data. Many ... More
AutoScaler: Scale-Attention Networks for Visual CorrespondenceNov 17 2016Finding visual correspondence between local features is key to many computer vision problems. While defining features with larger contextual scales usually implies greater discriminativeness, it could also lead to less spatial accuracy of the features. ... More
Ultrafast transient dynamics in composite multiferroicsJan 04 2016We investigate theoretically the dynamic multiferroic response of coupled ferroelectric/ferromagnetic composites upon excitation by a photo-induced acoustic strain pulse. Two magnetoelectric mechanisms are considered: interface strain- and charge-mediated ... More
Deep Domain Confusion: Maximizing for Domain InvarianceDec 10 2014Recent reports suggest that a generic supervised deep CNN model trained on a large-scale dataset reduces, but does not remove, dataset bias on a standard benchmark. Fine-tuning deep models in a new domain can require a significant amount of data, which ... More
Characteristic quantities of pion-emitting sources extracted by model-independent analysis in relativistic heavy ion collisionsSep 07 2009Sep 08 2009We examine the characteristic quantities of pion-emitting sources extracted by model-independent imaging analysis in relativistic heavy ion collisions. The moments of the spatial separation of pion pair emission can provide the characteristic information ... More
750 GeV Diphoton Resonance in a Vector-like Extension of Hill ModelApr 04 2016Apr 07 2016In this paper, we study the recent 750 GeV diphoton excess in the Hill Model with vector-like fermions, in which the singlet-like Higgs boson is chosen as 750 GeV resonance and is mainly produced by the gluon fusion through vector-like top and bottom ... More
Explosive chromospheric evaporation driven by nonthermal electrons around one footpoint of a solar flare loopMay 06 2017We explore the temporal relationship between microwave/HXR emission and Doppler velocity during the impulsive phase of a solar flare on 2014 October 27 (SOL2014-10-27), which displays a pulse on the light curves in microwave (34 GHz) and hard X-ray (HXR, ... More
On Sharpness of the Local Kato Smoothing Property of Dispersive Wave EquationsMar 28 2016Constantin and Saut showed in 1988 that solutions of the Cauchy problem for general dispersive equations $$ w_t +iP(D)w=0,\quad w(x,0)=q (x), \quad x\in \mathbb{R}^n, \ t\in \mathbb{R} , $$ enjoy the local smoothing property $$ q\in H^s (\R ^n) \implies ... More
HBT interferometry with quantum transport of the interfering pairMay 10 2008In the late stage of the evolution of a pion system in high-energy heavy-ion collisions when pions undergo multiple scatterings, the quantum transport of the interfering pair of identical pions plays an important role in determining the characteristics ... More
On Revenue Maximization with Sharp Multi-Unit DemandsSep 30 2012Dec 30 2014We consider markets consisting of a set of indivisible items, and buyers that have {\em sharp} multi-unit demand. This means that each buyer $i$ wants a specific number $d_i$ of items; a bundle of size less than $d_i$ has no value, while a bundle of size ... More
A Survey of Distributed Consensus Protocols for Blockchain NetworksApr 08 2019Since the inception of Bitcoin, cryptocurrencies and the underlying blockchain technology have attracted an increasing interest from both academia and industry. Among various core components, consensus protocol is the defining technology behind the security ... More
Throughput Maximization in Two-hop DF Multiple-Relay Network with Simultaneous Wireless Information and Power TransferApr 24 2019This paper investigates the end-to-end throughput maximization problem for a two-hop multiple-relay network, with relays powered by simultaneous wireless information and power transfer (SWIPT) technique. Nonlinearity of energy harvester at every relay ... More
Context-Aware Zero-Shot RecognitionApr 19 2019Apr 24 2019We present a novel problem setting in zero-shot learning, zero-shot object recognition and detection in the context. Contrary to the traditional zero-shot learning methods, which simply infers unseen categories by transferring knowledge from the objects ... More
Beyond Frontal Faces: Improving Person Recognition Using Multiple CuesJan 23 2015Jan 30 2015We explore the task of recognizing peoples' identities in photo albums in an unconstrained setting. To facilitate this, we introduce the new People In Photo Albums (PIPA) dataset, consisting of over 60000 instances of 2000 individuals collected from public ... More
Prediction of Coronary Heart Disease Using Routine Blood TestsSep 12 2018Background --The objective of this study was to examine the association of routine blood test results with coronary heart disease (CHD) risk, to incorporate them into coronary prediction models and to compare the discrimination properties of this approach ... More
Pairing and Quantum Double of Finite Hopf C*-AlgebrasAug 07 2009This paper defines a pairing of two finite Hopf C*-algebras $A$ and $B$, and investigates the interactions between them. If the pairing is non-degenerate, then the quantum double construction is given. This construction yields a new finite Hopf C*-algebra ... More