Results for "Yan Liu"

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A Class of Five-weight Cyclic Codes and Their Weight DistributionDec 17 2013Feb 12 2015In this paper, a family of five-weight reducible cyclic codes is presented. Furthermore, the weight distribution of these cyclic codes is determined, which follows from the determination of value distributions of certain exponential sums.
A Class of Six-weight Cyclic Codes and Their Weight DistributionNov 14 2013Dec 04 2013In this paper, a family of six-weight cyclic codes over GF(p) whose duals have two zeros is presented, where p is an odd prime. And the weight distribution of these cyclic codes is determined.
Higher weight distribution of linearized Reed-Solomon codesMay 27 2015Linearized Reed-Solomon codes are defined. Higher weight distribution of those codes are determined.
The Uncertainty Relationship In Magnetic Resonance Imaging (MRI)Sep 21 2001The uncertainty relationship in MRI is shown. The result of uncertainty relationship is compared with other factors influencing the resolution of MRI. Our estimations show that the uncertainty relationship is of no significance in practice.
Differentiable Physics-informed Graph NetworksFeb 08 2019Feb 11 2019While physics conveys knowledge of nature built from an interplay between observations and theory, it has been considered less importantly in deep neural networks. Especially, there are few works leveraging physics behaviors when the knowledge is given ... More
Compact Composition Operators on the Bloch Space in Bounded Symmetric DomainsApr 01 2005Let $\Omega$ be a bounded symmetric domain except the two exceptional domains of ${\Bbb C}^N$ and $\phi$ a holomorphic self-map of $\Omega.$ This paper gives a sufficient and necessary condition for the composition operator $C_{\phi}$ induced by $\phi$ ... More
Linearized Reed-Solomon codes and linearized Wenger graphsFeb 06 2015Feb 16 2015A codeword is associated to a linearized polynomial. The weight distribution of the codewords is determined as the linearized polynomial varies in a family of fixed degree. There is a corresponding result on Wenger graphs from linearized polynomials.
Incidence Matrices of Polarized Projective SpacesApr 23 2013In this paper, we first define a non-degenerate symmetric bilinear form on Fq^4. Then we get an incidence matrix G of Fq^4 by the bilinear form. By its corresponding quadratic form Q, the lines of Fq^4 are classified as isotropic and anisotropic lines. ... More
The Essential Norm of Composition Operator between Generalized Bloch Spaces in Polydiscs and its ApplicationsMar 31 2005Dec 27 2005Let $U^{n}$ be the unit polydisc of ${\Bbb C}^{n}$ and $\phi=(\phi_1, >..., \phi_n)$ a holomorphic self-map of $U^{n}.$ By ${\cal B}^p(U^{n})$, ${\cal B}^p_{0}(U^{n})$ and ${\cal B}^p_{0*}(U^{n})$ denote the $p$-Bloch space, Little $p$-Bloch space and ... More
Incompressible hydrodynamic approximation with viscous heating to the Boltzmann equationNov 16 2016The incompressible Navier-Stokes-Fourier system with viscous heating was first derived from the Boltzmann equation in the form of the diffusive scaling by Bardos-Levermore-Ukai-Yang (2008). The purpose of this paper is to justify such an incompressible ... More
Invariance of deficiency indices of Hermitian subspaces under relatively bounded perturbationsApr 12 2019This paper is concerned with the stability of deficiency indices of Hermitian subspaces (i.e., linear relations) under relatively bounded perturbations in Hilbert spaces. Several results about invariance of deficiency indices of Hermitian subspaces under ... More
Trace class perturbation of closed linear relationsDec 06 2018This paper studies trace class perturbation of closed linear relations in Hilbert spaces. The concept of trace class perturbation of closed relations is introduced by orthogonal projections. Equivalent characterizations of compact and trace class block ... More
An application of $L^m-L^r$ estimates to weakly coupled systems of semilinear viscoelastic wave equationsSep 20 2018Oct 07 2018We consider weakly coupled systems of semilinear viscoelastic wave equations with different power source nonlinearities in $\mathbb{R}^n$, $n\geq1$ as follows: \begin{equation*} \left\{\begin{aligned} &u_{tt}-\Delta u+g\ast\Delta u+u_t=|\partial_t^{\ell}v|^p,\\ ... More
New parameter-free mobility model: Opportunity priority selection modelAug 20 2018Apr 19 2019Predicting human mobility patterns has many practical applications in urban planning, traffic engineering, infectious disease epidemiology, emergency management and location-based services. Developing a universal model capable of accurately predicting ... More
CNN based music emotion classificationApr 19 2017Music emotion recognition (MER) is usually regarded as a multi-label tagging task, and each segment of music can inspire specific emotion tags. Most researchers extract acoustic features from music and explore the relations between these features and ... More
Similarity Grouping-Guided Neural Network Modeling for Maritime Time Series PredictionMay 13 2019Reliable and accurate prediction of time series plays a crucial role in maritime industry, such as economic investment, transportation planning, port planning and design, etc. The dynamic growth of maritime time series has the predominantly complex, nonlinear ... More
Turning an Urban Scene Video into a CinemagraphDec 05 2016This paper proposes an algorithm that turns a regular video capturing urban scenes into a high-quality endless animation, known as a Cinemagraph. The creation of a Cinemagraph usually requires a static camera in a carefully configured scene. The task ... More
$P_c(4457)^+$, $P_c(4440)^+$, and $P_c(4312)^+$: molecules or compact pentaquarks?May 21 2019We update the estimations for the masses of the $(uud)_{8_c}(c\bar{c})_{8_c}$ and $(uds)_{8_c}(c\bar{c})_{8_c}$ pentaquark states by considering the isospin breaking effects. Their values are determined by calculating mass distances from the $\Sigma_c^{++}D^-$ ... More
Transfer Topic Modeling with Ease and ScalabilityJan 24 2013Jan 26 2013The increasing volume of short texts generated on social media sites, such as Twitter or Facebook, creates a great demand for effective and efficient topic modeling approaches. While latent Dirichlet allocation (LDA) can be applied, it is not optimal ... More
Integration with respect to fractional local times with Hurst index $H$ greater than 1/2Mar 26 2008Dec 04 2008Let ${\mathscr L}^H(x,t)=2H\int_0^t\delta(B^H_s-x)s^{2H-1}ds$ be the weighted local time of fractional Brownian motion $B^H$ with Hurst index $1/2<H<1$. In this paper, we use Young integration to study the integral of determinate functions $\int_{\mathbb ... More
Stable Band-Gaps in Phononic Crystals by Harnessing Hyperelastic Transformation MediaOct 09 2016Oct 13 2016The band structure in phononic crystals (PCs) is usually affected by the deformations of their soft components. In this work, hyperelastic transformation media is proposed to be integrated in the PCs'design, to achieve stable elastic band-gaps which is ... More
A new way to exclude collisions with order constraintsDec 12 2017A new geometric argument is introduced to exclude binary collisions with order constraints. Two applications are given in this paper. The first application is to show the existence of a new set of periodic orbits in the planar three-body problem with ... More
A Revisit of the Masuda FlareMay 27 2009Mar 15 2010We revisit the flare on 1992 January 13, which is now universally termed the "Masuda flare". The revisit is motivated not only by its uniqueness despite accumulating observations of \hxr coronal emission, but also by the improvement of Yohkoh hard X-ray ... More
Deep Generative Dual Memory Network for Continual LearningOct 28 2017May 25 2018Despite advances in deep learning, neural networks can only learn multiple tasks when trained on them jointly. When tasks arrive sequentially, they lose performance on previously learnt tasks. This phenomenon called catastrophic forgetting is a fundamental ... More
Clarification on Generalized Lau condition for X-ray interferometers based on dual phase gratingsJun 04 2019To implement dual phase grating x-ray interferometry with x-ray tubes, one needs to incorporate an absorbing source grating. In order to attain good fringe visibility, the period of a source grating should be subject to a stringent condition. In literature ... More
Optical Spectroscopic Observations of Cyg X-1=HDE 226868Jun 26 2008We present the results of the spectroscopic observations of HDE 226868, the optical counterpart to the black hole X-ray binary Cyg X-1, from 2001 to 2006. We analyze the variabilities of the two components in the complex H$\alpha$ line: one P-Cygni shaped ... More
Robustness of classification ability of spiking neural networksJan 30 2018It is well-known that the robustness of artificial neural networks (ANNs) is important for their wide ranges of applications. In this paper, we focus on the robustness of the classification ability of a spiking neural network which receives perturbed ... More
Impact of near-PT symmetry on exciting solitons and interactions based on a complex Ginzburg-Landau modelJan 25 2018We present and theoretically report the influence of a class of near-parity-time-(PT-) symmetric potentials with spectral filtering parameter $\alpha_2$ and nonlinear gain-loss coefficient $\beta_2$ on solitons in the complex Ginzburg-Landau (CGL) equation. ... More
Learning to Rank Binary CodesOct 21 2014Binary codes have been widely used in vision problems as a compact feature representation to achieve both space and time advantages. Various methods have been proposed to learn data-dependent hash functions which map a feature vector to a binary code. ... More
The Bouleau-Yor identity for a bi-fractional Brownian motionDec 27 2012Let $B$ be a bi-fractional Brownian motion with indices $H\in (0,1),K\in (0,1]$, $2HK=1$ and let ${\mathscr L}(x,t)$ be its local time process. We construct a Banach space ${\mathscr H}$ of measurable functions such that the quadratic covariation $[f(B),B]$ ... More
Identifying variations of magnetic anomalies using geomagnetic monitoringApr 17 2019We are concerned with the inverse problem of identifying magnetic anomalies with varing parameters beneath the Earth using geomagnetic monitoring. Observations of the change in Earth's magnetic field--the secular variation--provide information about the ... More
Detecting Statistical Interactions from Neural Network WeightsMay 14 2017Feb 27 2018Interpreting neural networks is a crucial and challenging task in machine learning. In this paper, we develop a novel framework for detecting statistical interactions captured by a feedforward multilayer neural network by directly interpreting its learned ... More
Local degree blocking model for link prediction in complex networksJun 09 2014Sep 16 2014Recovering and reconstructing networks by accurately identifying missing and unreliable links is a vital task in the domain of network analysis and mining. In this article, by studying a specific local structure, namely a degree block having a node and ... More
Learning Efficient and Effective Exploration Policies with Counterfactual Meta PolicyMay 28 2019A fundamental issue in reinforcement learning algorithms is the balance between exploration of the environment and exploitation of information already obtained by the agent. Especially, exploration has played a critical role for both efficiency and efficacy ... More
Trace Codes with Few Weights over $\mathbb{F}_p+u\mathbb{F}_p$Dec 01 2016We construct an infinite family of two-Lee-weight and three-Lee-weight codes over the chain ring $\mathbb{F}_p+u\mathbb{F}_p.$ They have the algebraic structure of abelian codes. Their Lee weight distribution is computed by using Gauss sums. Then by using ... More
Multiple D2-Brane Action from M2-BranesJul 08 2008We study the detail derivation of the multiple D2-brane effective action from multiple M2-branes in the Bagger-Lambert-Gustavsson (BLG) theory and the Aharony-Bergman-Jafferis-Maldacena (ABJM) theory by employing the novel Higgs mechanism. We show explicitly ... More
Chiral vortical conductivity across a topological phase transition from holographyApr 17 2019We study the chiral vortical conductivity in a holographic Weyl semimetal model, which describes a topological phase transition from the strongly coupled topologically nontrivial phase to a trivial phase. We focus on the temperature dependence of the ... More
Noncommutative corrections to the holographic entanglement entropy of the pure AdS spacetime and Schwarzschild-AdS black holeMar 07 2019Mar 18 2019We compute the noncommutative corrections to the holographic entanglement entropy of the pure AdS spacetime and Schwarzschild-AdS black hole, where the noncommutaitve background is suitably constructed that matches the Poincar\'e coordinate system. In ... More
Boundedness of Maximal Calderón-Zygmund Operators on Non-homogeneous Metric Measure SpacesAug 27 2013Let $(\cx,\,d,\,\mu)$ be a metric measure space and satisfy the so-called upper doubling condition and the geometrically doubling condition. In this paper, the authors show that for the maximal Calder\'on-Zygmund operator associated with a singular integral ... More
Good Self-dual Generalized Quasi-Cyclic Codes ExistJan 11 2016We show that there are good long binary generalized quasi-cyclic self-dual (either Type I or Type II) codes.
Detecting high-dimensional multipartite entanglement via some classes of measurementsDec 09 2015Feb 26 2018Mutually unbiased bases, mutually unbiased measurements and general symmetric informationally complete measurements are three related concepts in quantum information theory. We investigate multipartite systems using these notions and present some criteria ... More
The generalized quadratic covariation for fractional Brownian motion with Hurst index less than 1/2Jun 12 2011Jun 18 2011Let $B^H$ be a fractional Brownian motion with Hurst index $0<H<1/2$. In this paper we study the {\it generalized quadratic covariation} $[f(B^H),B^H]^{(W)}$ defined by $$ [f(B^H),B^H]^{(W)}_t=\lim_{\epsilon\downarrow 0}\frac{2H}{\epsilon^{2H}}\int_0^t\{f(B^{H}_{s+\epsilon})-f(B^{H}_s)\}(B^{H}_{s+\epsilon}- ... More
Extracting Interpretable Concept-Based Decision Trees from CNNsJun 11 2019Jun 16 2019In an attempt to gather a deeper understanding of how convolutional neural networks (CNNs) reason about human-understandable concepts, we present a method to infer labeled concept data from hidden layer activations and interpret the concepts through a ... More
Model Selection for Topic Models via Spectral DecompositionOct 23 2014Feb 17 2015Topic models have achieved significant successes in analyzing large-scale text corpus. In practical applications, we are always confronted with the challenge of model selection, i.e., how to appropriately set the number of topics. Following recent advances ... More
Nonautonomous discrete rogue waves and interaction in the generalized Ablowitz-Ladik-Hirota lattice with variable coefficientsMay 18 2011We analytically investigate the nonautonomous discrete rogue wave solutions and their interaction in the generalized Ablowitz-Ladik-Hirota lattice with variable coefficients, which possess complicated wave propagations in time and are beyond the usual ... More
Discrete Mass Ejections from the Be/X-ray Binary A0535+26/HD245770Nov 03 2011We present the long-term optical spectroscopic observations on the Be/X-ray binary A0535+26 from 1992 to 2010. Combining with the public V-band photometric data, we find that each giant X-ray outburst occurred in a fading phase of the optical brightness. ... More
Dependence of Solutions and Eigenvalues of Third Order Linear Measure Differential Equations on MeasuresJan 03 2019This paper deals with a complex third order linear measure differential equation \begin{equation*} i\mathrm{d}\left( y^{\prime }\right) ^{\bullet }+2iq\left( x\right) y^{\prime }\mathrm{d}x+y\left( i\mathrm{d}q\left( x\right) +\mathrm{d}p\left( x\right) ... More
Quality Aware Network for Set to Set RecognitionApr 11 2017This paper targets on the problem of set to set recognition, which learns the metric between two image sets. Images in each set belong to the same identity. Since images in a set can be complementary, they hopefully lead to higher accuracy in practical ... More
Energy Efficiency in Multicast Multihop D2D NetworksJun 08 2016As the demand of mobile devices (MDs) for data services is explosively increasing, traditional offloading in the cellular networks is facing the contradiction of energy efficiency and quality of service. Device-to-device (D2D) communication is considered ... More
Representations and module-extensions of hom 3-Lie algebrasApr 27 2013In this paper, we study the representations and module-extensions of hom 3-Lie algebras. We show that a linear map between hom 3-Lie algebras is a morphism if and only if its graph is a hom 3-Lie subalgebra and show that the derivations of a hom 3-Lie ... More
Achieving Secrecy Capacity of the Gaussian Wiretap Channel with Polar LatticesMar 08 2015Jan 04 2016In this work, an explicit wiretap coding scheme based on polar lattices is proposed to achieve the secrecy capacity of the additive white Gaussian noise (AWGN) wiretap channel. Firstly, polar lattices are used to construct secrecy-good lattices for the ... More
Ensemble-Compression: A New Method for Parallel Training of Deep Neural NetworksJun 02 2016In recent year, parallel implementations have been used to speed up the training of deep neural networks (DNN). Typically, the parameters of the local models are periodically communicated and averaged to get a global model until the training curve converges ... More
Numerical Study on Mechanism of Multiple Rings FormationFeb 21 2014In this paper, the flow around each ring-like vortex is investigated by high order DNS including first sweep, first ejection, second sweep, second ejection, positive spike, momentum deficit, vortex shape, vortex location, strength of sweeps, etc. Meanwhile, ... More
A penalized likelihood approach for efficiently estimating a partially linear additive transformation model with current status dataApr 23 2019Current status data are commonly encountered in medical and epidemiological studies in which the failure time for study units is the outcome variable of interest. Data of this form are characterized by the fact that the failure time is not directly observed ... More
Optical Spectroscopic Observations of CI CamelopardalisJun 26 2008We present the results of optical spectroscopic observations of CI Cam. Double-peaked profiles were simultaneously observed for the first time in the hydrogen Balmer, He {\small I} $\lambda$6678 and Fe {\small II} lines during an observational run in ... More
CSI: A Hybrid Deep Model for Fake News DetectionMar 20 2017Sep 03 2017The topic of fake news has drawn attention both from the public and the academic communities. Such misinformation has the potential of affecting public opinion, providing an opportunity for malicious parties to manipulate the outcomes of public events ... More
$K$-anonymous Signaling SchemeNov 26 2013Nov 27 2013We incorporate signaling scheme into Ad Auction setting, to achieve better welfare and revenue while protect users' privacy. We propose a new \emph{$K$-anonymous signaling scheme setting}, prove the hardness of the corresponding welfare/revenue maximization ... More
Modelling Sentence Pairs with Tree-structured Attentive EncoderOct 10 2016We describe an attentive encoder that combines tree-structured recursive neural networks and sequential recurrent neural networks for modelling sentence pairs. Since existing attentive models exert attention on the sequential structure, we propose a way ... More
Beyond Exponentially Discounted Sum: Automatic Learning of Return FunctionMay 28 2019In reinforcement learning, Return, which is the weighted accumulated future rewards, and Value, which is the expected return, serve as the objective that guides the learning of the policy. In classic RL, return is defined as the exponentially discounted ... More
Sharp inequalities of homogeneous expansions for quasi-convex mappings of type B and almost starlike mappings of order alphaNov 22 2015In this paper, we first obtain several sharp inequalities of homogeneous expansion for both the subclass of all normalized biholomorphic quasi-convex mappings of type B and order alpha and the subclass of all normalized biholomorphic almost starlike mappings ... More
Spontaneous Parity--Time Symmetry Breaking and Stability of Solitons in Bose-Einstein CondensatesSep 21 2010We report explicitly a novel family of exact PT-symmetric solitons and further study their spontaneous PT symmetry breaking, stabilities and collisions in Bose-Einstein condensates trapped in a PT-symmetric harmonic trap and a Hermite-Gaussian gain/loss ... More
A type of multiple integral with loggamma functionApr 21 2014In this paper, we study the multiple integral $ \displaystyle I= \int_0^1 \int_0^1 \dots \int_0^1 f(x_1+x_2 + \dots +x_n) \, dx_1 \, dx_2 \, \dots \, dx_n$. A general formula of $I$ is presented. As an application, the integral $I$ with $f(x)= \log \Gamma(x)$ ... More
Understanding the multiwavelength observation of Geminga's TeV halo: the role of anisotropic diffusion of particlesApr 25 2019In this letter we demonstrate that the X-ray and the TeV observations in the vicinity of Geminga can be understood in the framework of anisotropic diffusion of injected electrons/positrons. This interpretation only requires the turbulence in the vicinity ... More
Evolution of Filament BarbsJan 11 2010We present a selected few cases in which the sense of chirality of filament barbs changed within as short as hours. We investigate in detail a quiescent filament on 2003 September 10 and 11. Of its four barbs displaying such changes only one overlay a ... More
Sample phase gradient and fringe phase shift in dual phase grating X-ray interferometryJun 20 2019One of the key tasks in grating based x-ray phase contrast imaging is to accurately retrieve local phase gradients of a sample from measured intensity fringe shifts. To fulfill this task in dual phase grating interferometry, one needs to know the exact ... More
Parameters estimation of a noisy sinusoidal signal with time-varying amplitudeMay 16 2011In this paper, we give estimators of the frequency, amplitude and phase of a noisy sinusoidal signal with time-varying amplitude by using the algebraic parametric techniques introduced by Fliess and Sira-Ramirez. We apply a similar strategy to estimate ... More
Mathematical properties of a semi-classical signal analysis method: noisy signal caseJul 01 2012Aug 31 2012Recently, a new signal analysis method based on a semi-classical approach has been proposed [1]. The main idea in this method is to interpret a signal as a potential of a Schrodinger operator and then to use the discrete spectrum of this operator to analyze ... More
Convergence Rate of the Causal Jacobi Derivative EstimatorJun 11 2011Numerical causal derivative estimators from noisy data are essential for real time applications especially for control applications or fluid simulation so as to address the new paradigms in solid modeling and video compression. By using an analytical ... More
Error analysis of a class of derivative estimators for noisy signalsMar 03 2011Recent algebraic parametric estimation techniques led to point-wise derivative estimates by using only the iterated integral of a noisy observation signal. In this paper, we extend such differentiation methods by providing a larger choice of parameters ... More
Differentiation by integration with Jacobi polynomialsDec 25 2010Mar 03 2011In this paper, the numerical differentiation by integration method based on Jacobi polynomials originally introduced by Mboup, Fliess and Join is revisited in the central case where the used integration window is centered. Such method based on Jacobi ... More
A Scaling Behavior of Bloch Oscillation in Weyl SemimetalsMay 09 2016We predict a linear logarithmical scaling law of Bloch oscillation dynamics in Weyl semimetals (WSMs), which can be applied to detect Weyl nodal points. Applying the semiclassical dynamics for quasiparticles which are accelerated bypassing a Weyl point, ... More
Enhanced No-Go Theorem for Quantum Position VerificationMay 18 2013Based on the instantaneous nonlocal quantum computation (INQC), Buhrman et al. proposed an excellent attack strategy to quantum position verification (QPV) protocols in 2011, and showed that, if the colluding adversaries are allowed to previously share ... More
On Bochner's and Polya's Characterizations of Positive-Definite Kernels and the Respective Random Feature MapsOct 27 2016Positive-definite kernel functions are fundamental elements of kernel methods and Gaussian processes. A well-known construction of such functions comes from Bochner's characterization, which connects a positive-definite function with a probability distribution. ... More
Fate of topological states and mobility edges in one-dimensional slowly varying incommensurate potentialsAug 01 2017We investigate the interplay between disorder and superconducting pairing for a one-dimensional $p$-wave superconductor subject to slowly varying incommensurate potentials with mobility edges. With amplitude increments of the incommensurate potentials, ... More
Separability criteria via some classes of measurementsApr 27 2017Sep 06 2017Mutually unbiased bases (MUBs) and symmetric informationally complete (SIC) positive operator-valued measurements (POVMs) are two related topics in quantum information theory. They are generalized to mutually unbiased measurements (MUMs) and general symmetric ... More
Separability criteria via sets of mutually unbiased measurementsJan 08 2015Aug 22 2015Mutually unbiased measurements (MUMs) are generalized from the concept of mutually unbiased bases (MUBs) and include the complete set of MUBs as a special case, but they are superior to MUBs as they do not need to be rank one projectors. We investigate ... More
WordRep: A Benchmark for Research on Learning Word RepresentationsJul 07 2014WordRep is a benchmark collection for the research on learning distributed word representations (or word embeddings), released by Microsoft Research. In this paper, we describe the details of the WordRep collection and show how to use it in different ... More
Train Feedfoward Neural Network with Layer-wise Adaptive Rate via Approximating Back-matching PropagationFeb 27 2018Stochastic gradient descent (SGD) has achieved great success in training deep neural network, where the gradient is computed through back-propagation. However, the back-propagated values of different layers vary dramatically. This inconsistence of gradient ... More
Simple weight modules over the quantum Schrödinger algebraApr 05 2017In the present paper, using the technique of localization, we determine the center of the quantum Schr\"{o}dinger algebra $\S_q$ and classify simple modules with finite-dimensional weight spaces over $\S_q$, when $q$ is not a root of unity. It turns out ... More
Modeling and Analysis of SCMA Enhanced D2D and Cellular Hybrid NetworkJun 14 2016Sparse code multiple access (SCMA) has been recently proposed for the future wireless networks, which allows non-orthogonal spectrum resource sharing and enables system overloading. In this paper, we apply SCMA into device-to-device (D2D) communication ... More
Evolution of the Loop-Top Source of Solar Flares--Heating and Cooling ProcessesAug 24 2005We present a study of the spatial and spectral evolution of the loop-top (LT) sources in a sample of 6 flares near the solar limb observed by {\it RHESSI}. A distinct coronal source, which we identify as the LT source, was seen in each of these flares ... More
Dynamics study of $Z^+(4430)$ and X(3872) in molecular pictureFeb 21 2008Mar 24 2008In this talk, we review our recent work about the dynamical studies of $Z^+(4430)$ and X(3872). $Z^+(4430)$ can not be explained as a $D_1'D^*$ or $D_1D^*$ molecular state only considering one pion exchange potential without the cutoff, which needs to ... More
Systematic studies of charmonium-, bottomonium-, and $B_c$-like tetraquark statesOct 16 2018Jan 18 2019We study the mass splittings of $Q_1q_2\bar{Q}_3\bar{q}_4$ ($Q=c,b$, $q=u,d,s$) tetraquark states with chromomagnetic interactions between their quark components. Assuming that $X(4140)$ is the lowest $J^{PC}=1^{++}$ $cs\bar{c}\bar{s}$ tetraquark, we ... More
Localization Guided Learning for Pedestrian Attribute RecognitionAug 28 2018Pedestrian attribute recognition has attracted many attentions due to its wide applications in scene understanding and person analysis from surveillance videos. Existing methods try to use additional pose, part or viewpoint information to complement the ... More
Long-term Optical Studies of the Be/X-ray Binary RX J0440.9+4431/LS V+44 17Feb 25 2016We present the spectroscopic and photometric observations on the Be/X-ray binary RX~J0440.9+4431 from 2001 to 2014. The short-term and long-term variability of the H$\alpha$ line profile indicates that one-armed global oscillations existed in the circumstellar ... More
Predictions of the hidden-charm molecular states with four-quark componentNov 11 2015May 31 2016In this work, we study the $T\bar{T}$-type molecular systems systematically via one pion exchange model, where $T$ denotes the narrow $J^P=1^+$ $D_1$ meson or $2^+$ $D_2^*$ meson and $\bar{T}$ is its antiparticle. With the effective potentials, we try ... More
RHESSI Observation of Chromospheric EvaporationMar 19 2006Jun 06 2006We present analyses of the spatial and spectral evolution of hard X-ray emission observed by {\it RHESSI} during the impulsive phase of an M1.7 flare on 2003 November 13. In general, as expected, the loop top (LT) source dominates at low energies while ... More
RHESSI Observations of a Simple Large X-ray Flare on 11-03-2003Jan 20 2004Jun 16 2004We present data analysis and interpretation of a simple X-class flare observed with RHESSI on November 3, 2003. In contrast to other X-class flares observed previously, this flare shows a very simple morphology with well defined looptop (LT) and footpoint ... More
From Plots to Endings: A Reinforced Pointer Generator for Story Ending GenerationJan 11 2019We introduce a new task named Story Ending Generation (SEG), whic-h aims at generating a coherent story ending from a sequence of story plot. Wepropose a framework consisting of a Generator and a Reward Manager for thistask. The Generator follows the ... More
Fovea-Attentive Residual Network for Extracting 3D Angiograms from Single Volumetric OCT ScanJun 17 2019Optical Coherence Tomography Angiography (OCTA) has drawn numerous attentions in ophthalmology. However, its data acquisition is time-consuming, because it is based on temporal-decorrelation principle thus requires multiple repeated volumetric OCT scans. ... More
Bosonic Integer Quantum Hall States without Landau Levels on Square LatticeDec 04 2017We study an interacting two-component hard-core bosons on square lattice for which, in the presence of staggered magnetic flux, the ground state is a bosonic integer quantum Hall (BIQH) state. Using a coupled-wire bosonization approach, we analytically ... More
Experimental discovery of nodal chainsJun 17 2017Three-dimensional (3D) topological nodal points, such as Weyl and Dirac nodes have attracted wide-spread interest across multiple disciplines and diverse material systems. Unlike nodal points that contain little structural variations, nodal lines can ... More
Flexible broadband polarization converter based on metasurfaceat microwave bandMay 05 2019This paper proposes a flexible broadband linear polarization converter based on metasurface operating at microwave band. In order to achieve bandwidth extension property, long and short metallic arc wires, as well as the metallic disks placed over a ground ... More
Exotic pentaquark states with the $qqQQ\bar{Q}$ configurationMay 20 2019In the framework of the color-magnetic interaction model, we have systematically calculated the mass splittings for the S-wave triply heavy pentaquark states with the configuration $qqQQ\bar{Q}$ $(Q=c,b;q=u,d,s)$. Their masses are estimated and their ... More
Listening to Chaotic Whispers: A Deep Learning Framework for News-oriented Stock Trend PredictionDec 06 2017Feb 20 2019Stock trend prediction plays a critical role in seeking maximized profit from stock investment. However, precise trend prediction is very difficult since the highly volatile and non-stationary nature of stock market. Exploding information on Internet ... More
Realistic Type IIB Supersymmetric Minkowski Flux VacuaNov 18 2007We show that there exist supersymmetric Minkowski vacua on Type IIB toroidal orientifold with general flux compactifications where the RR tadpole cancellation conditions can be relaxed elegantly. Then we present a realistic Pati-Salam like model. At the ... More
On Cost-Effective Incentive Mechanisms in Microtask CrowdsourcingMay 29 2013While microtask crowdsourcing provides a new way to solve large volumes of small tasks at a much lower price compared with traditional in-house solutions, it suffers from quality problems due to the lack of incentives. On the other hand, providing incentives ... More
Quantile tests in frequency domain for sinusoid modelsMay 11 2016For second order stationary processes, the spectral distribution function is uniquely deter- mined by the autocovariance functions of the processes. We define the quantiles of the spectral distribution function and propose two estimators for the quantiles. ... More
On the stability of self-adjointness of linear relationsMay 30 2019This paper focuses on the stability of self-adjointness of linear relations under perturbations in Hilbert spaces. It is shown that a self-adjoint relation is still self-adjoint under bounded and relatively bounded perturbations. The results obtained ... More
Elasticity $\mathscr{M}$-tensors and the Strong Ellipticity ConditionMay 28 2017Jan 09 2019In this paper, we establish two sufficient conditions for the strong ellipticity of any fourth-order elasticity tensor and investigate a class of tensors satisfying the strong ellipticity condition, the elasticity $\mathscr{M}$-tensor. The first sufficient ... More