Results for "Wei Zhu"

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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
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
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
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
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
Integrality structures in topological strings I: framed unknotNov 20 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
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
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
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
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
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
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
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
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
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
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
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
The Vector and Axial-Vector Charmonium-like StatesOct 17 2010Feb 12 2011After constructing all the tetraquark interpolating currents with $J^{PC}=1^{-+}, 1^{--}, 1^{++}$ and $1^{+-}$ in a systematic way, we investigate the two-point correlation functions to extract the masses of the charmonium-like states with QCD sum rule. ... 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
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
Generalized monogamy inequality of negativity for multi-qubit systemsAug 23 2016In this paper, we present some generalized monogamy inequalities based on negativity and convex-roof extended negativity (CREN). The monogamy relations are satisfied by the negativity of $N-$qubit quantum systems $ABC_1\cdots C_{N-2},$ under the partition ... More
Hankel-type determinants for some combinatorial sequencesSep 22 2016Sep 26 2016In this paper we confirm several conjectures of Z.-W. Sun on Hankel-type determinants for some combinatorial sequences including Franel numbers, Domb numbers and Ap\'ery numbers. For any nonnegative integer $n$, define \begin{gather*}f_n:=\sum_{k=0}^n\binom ... More
Looking for quark saturation in proton and nucleiOct 16 2015Mar 05 2017The quark saturation behavior at low $Q^2$ is shown in a numeric solution of the DGLAP equation with parton recombination corrections, which resembles the widely discussed JIMWLK saturation of gluons. Our calculation suggests that the partonic saturation ... More
Strong decays of $D_{sJ}(2317)$ and $D_{sJ}(2460)$Oct 04 2005With the identification of ($D_{sJ}(2317), D_{sJ}(2460)$) as the ($0^+$, $1^+$) doublet in the heavy quark effective field theory, we derive the light cone QCD sum rule for the coupling of eta meson with $D_{sJ}(2317) D_s $ and $D_{sJ}(2460) D_s^{*} $. ... 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
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
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
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
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
Low dimensional manifold model in hyperspectral image reconstructionMay 18 2016We present the application of a low dimensional manifold model (LDMM) on hyperspectral image (HSI) reconstruction. An important property of hyperspectral images is that the patch manifold, which is sampled by the three-dimensional blocks in the data cube, ... 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
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
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
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
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
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
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
$x_F$ Dependence of Drell-Yan Transverse Moemtum BroadeningNov 11 1999Jun 05 2000We analyze $x_F$ dependence of Drell-Yan transverse momentum broadening in hadron-nucleus collisions. In terms of generalized factorization theorem, we show that the $x_F$ dependence of transverse momentum broadening, $ \Delta < q_T^2 > (x_F) $, can be ... More
Modulating the electronic properties of graphdiyne nanoribbonsNov 07 2013By ab initio calculation, Au, Cu, Fe, Ni and Pt adatoms were proposed for modulating the electronic property of graphdiyne naoribbons (GDNRs). GDNRs of 1~4 nm in width were found to be stable at room temperature, and the thermal rates of Au, Cu, Fe, Ni ... More
Modeling and Simulation of Liquid Crystal ElastomersJun 01 2010We consider a continuum model describing the dynamic behavior of nematic liquid crystal elastomers (LCEs) and implement a numerical scheme to solve the governing equations. In the model, the Helmholtz free energy and Rayleigh dissipation are used, within ... More
Space-time properties of the higher twist amplitudesJul 13 1999A consistent and intuitive description of the twist-4 corrections to the hadron structure functions is presented in a QCD-improved parton model using time-ordered perturbative theory, where the collinear singularities are naturally eliminated. We identify ... More
Five-dimensional vacuum Einstein spacetimes in C-metric like coordinatesMay 14 2010Sep 28 2010A 5-dimensional Einstein spacetime with (non)vanishing cosmological constant is analyzed in detail. The metric is in close analogy with the 4-dimensional massless uncharged C-metric in many aspects. The coordinate system, horizons and causal structures, ... More
The Possible $J^{PC}I^G=2^{++}2^+$ State X(1600)Nov 10 2004Apr 05 2006The interesting state X(1600) with $J^{PC}I^G=2^{++}2^+$ can't be a conventional $q \bar q$ meson in the quark model. Using a mixed interpolating current with different color configurations, we investigate the possible existence of X(1600) in the framework ... More
Hankel-type determinants for some combinatorial sequencesSep 22 2016Aug 02 2018In this paper we confirm several conjectures of Z.-W. Sun on Hankel-type determinants for some combinatorial sequences including Franel numbers, Domb numbers and Ap\'ery numbers. For any nonnegative integer $n$, define \begin{gather*}f_n:=\sum_{k=0}^n\binom ... More
Secure Massive MIMO Systems with Limited RF ChainsOct 03 2016In future practical deployments of massive multi-input multi-output (MIMO) systems, the number of radio frequency (RF) chains at the base stations (BSs) may be much smaller than the number of BS antennas to reduce the overall expenditure. In this paper, ... 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
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
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
Looking for quark saturation in proton and nucleiOct 16 2015The quark saturation behavior at low $Q^2$ is shown in numeric solution of the DGLAP equation with parton recombination corrections, which resembles the widely discussed JIMWLK saturation of gluons. Our calculation suggests that the partonic saturation ... 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
Sudden death of distillability in qutrit-qutrit systemsApr 30 2009Aug 01 2009We introduce the concept of distillability sudden death, i.e., free entangled states can evolve into non-distillable (bound entangled or separable) states in finite time under local noise. We describe the phenomenon through a specific model of local dephasing ... 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
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
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
One-Pass AUC OptimizationMay 07 2013May 16 2013AUC is an important performance measure and many algorithms have been devoted to AUC optimization, mostly by minimizing a surrogate convex loss on a training data set. In this work, we focus on one-pass AUC optimization that requires only going through ... More
High-quality Image Restoration from Partial Mixed Adaptive-Random MeasurementsDec 04 2013Apr 04 2015A novel framework to construct an efficient sensing (measurement) matrix, called mixed adaptive-random (MAR) matrix, is introduced for directly acquiring a compressed image representation. The mixed sampling (sensing) procedure hybridizes adaptive edge ... More
Robust Intrinsic Ferromagnetism and Half Semiconductivity in Stable Two-Dimensional Single-Layer Chromium TrihalidesJul 27 2015Feb 25 2016Two-dimensional (2D) intrinsic ferromagnetic (FM) semiconductors are crucial to develop low-dimensional spintronic devices. Using density functional theory, we show that single-layer chromium trihalides (SLCTs) (CrX$_3$,X=F, Cl, Br and I) constitute a ... More
Deep Feature Flow for Video RecognitionNov 23 2016Deep convolutional neutral networks have achieved great success on image recognition tasks. Yet, it is non-trivial to transfer the state-of-the-art image recognition networks to videos as per-frame evaluation is too slow and unaffordable. We present deep ... More
Intrinsic Tunneling Spectra of Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ near Optimal DopingMar 07 2007Mar 13 2007We report tunneling spectra of near optimally doped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ intrinsic Josephson junctions with area of 0.09 $\mu$m$^2$, which avoid some fundamental difficulties in the previous tunneling experiments and allow a stable temperature-dependent ... More
Identifying Stable Patterns over Time for Emotion Recognition from EEGJan 10 2016In this paper, we investigate stable patterns of electroencephalogram (EEG) over time for emotion recognition using a machine learning approach. Up to now, various findings of activated patterns associated with different emotions have been reported. However, ... More
Distance proper connection of graphsJun 21 2016Let $G$ be an edge-colored connected graph. A path $P$ in $G$ is called a distance $\ell$-proper path if no two edges of the same color appear with fewer than $\ell$ edges in between on $P$. The graph $G$ is called $(k,\ell)$-proper connected if every ... More
Higher Dimensional Homology Algebra III:Projective Resolutions and Derived 2-Functors in (2-SGp)Jul 09 2010Aug 20 2010In this paper, we will define the derived 2-functor by projective resolution of any symmetric 2-group, and give some related properties of the derived 2-functor.
Vector rectangular-shape laser based on reduced graphene oxide interacting with long fiber taperApr 13 2014A vector dual-wavelength rectangular-shape laser (RSL) based on a long fiber taper deposited with reduced graphene oxide is proposed, where the nonlinearity is enhanced due to large evanescent-field-interacting length and strong field confinement of a ... More
A Model-Based Scatter Artifacts Correction for Cone Beam CTFeb 29 2016The purpose of this work is to provide a fast and accurate scatter artifacts correction algorithm for cone beam CT (CBCT) imaging. The method starts with an estimation of coarse scatter profiles for a set of CBCT data in either image domain or projection ... More
Study of $K^*_0(1430)$ and $a_0(980)$ from $B\to K^*_0(1430)π$ and $B\to a_0(980)K$ DecaysOct 28 2006May 16 2007We use the decay modes $B \to K^*_0(1430) \pi$ and $B \to a_0(980) K$ to study the scalar mesons $K^*_0(1430)$ and $a_0(980)$ within perturbative QCD framework. For $B \to K^*_0(1430) \pi$, we perform our calculation in two scenarios of the scalar meson ... More
Junctionless dual-gate electrostatic modulation of self-aligned oxide channels by chitosan-based proton conductorsMay 07 2012Dual-gate electrostatic modulation gives an attractive approach for transistors performance improvement, threshold voltage (Vth) and operation mode modulation, which is favorable for chemical sensor and logic applications. Here, a self-aligned junctionless ... More
Triply heavy $QQ\bar Q\bar q$ tetraquark statesAug 01 2017Nov 29 2017Within the framework of QCD sum rules, we have investigated the tetraquark states with three heavy quarks. We systematically construct the interpolating currents for the possible $cc\bar{c}\bar{q}$, $cc\bar{b}\bar{q}$, $bc\bar{b}\bar{q}$, $bb\bar{b}\bar{q}$ ... More
A Recursive Framework for Expression Recognition: From Web Images to Deep Models to Game DatasetAug 04 2016In this paper, we propose a recursive framework to recognize facial expressions from images in real scenes. Unlike traditional approaches that typically focus on developing and refining algorithms for improving recognition performance on an existing dataset, ... More
Social contagions on weighted networksApr 02 2016We investigate critical behaviors of a social contagion model on weighted networks. An edge-weight compartmental approach is applied to analyze the weighted social contagion on strongly heterogenous networks with skewed degree and weight distributions. ... 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
Mechanotunable monatomic metal structures at graphene edgesFeb 05 2014Feb 11 2014Monatomic metal (e.g. silver) structures could form preferably at graphene edges. We explore their structural and electronic properties by performing density functional theory based first-principles calculations. The results show that cohesion between ... More
Higher Dimensional Homology Algebra II:ProjectivityJun 24 2010In this paper, we will prove that the 2-category (2-SGp) of symmetric 2-groups and 2-category ($\cR$-2-Mod) of $\cR$-2-modules(\cite{5}) have enough projective objects, respectively.
Coherence loss of partially mode-locked fiber laserOct 13 2014Jan 05 2016Stochastically driven nonlinear processes limit the number of amplified modes in a natural system due to competitive mode interaction, which is accompanied by loss of coherence when increasing the complexity of system. Specifically, we find that modulation ... More
One-dimensional Ising model built on small-world networks: competing dynamicsMay 13 2005In this paper, we offer a competing dynamic analysis of the one-dimensional Ising model built on the small-world network (SWN). Adding-type SWNs are investigated in detail using a simplified Hamiltonian of mean-field nature, and the result of rewiring-type ... More
Universal entropy relations: entropy formulae and entropy boundMay 03 2016We survey the applications of universal entropy relations in black holes with multi-horizons. In sharp distinction to conventional entropy product, the entropy relationship here not only improve our understanding of black hole entropy but was introduced ... More
Applying Bayesian Neural Networks to Event Reconstruction in Reactor Neutrino ExperimentsDec 25 2007May 02 2008A toy detector has been designed to simulate central detectors in reactor neutrino experiments in the paper. The electron samples from the Monte-Carlo simulation of the toy detector have been reconstructed by the method of Bayesian neural networks (BNN) ... More
Sentiment Analysis based on User Tag for Traditional Chinese Medicine in WeiboOct 13 2014With the acceptance of Western culture and science, Traditional Chinese Medicine (TCM) has become a controversial issue in China. So, it's important to study the public's sentiment and opinion on TCM. The rapid development of online social network, such ... More
Bearing fault diagnosis based on spectrum images of vibration signalsNov 08 2015Feb 04 2016Bearing fault diagnosis has been a challenge in the monitoring activities of rotating machinery, and it's receiving more and more attention. The conventional fault diagnosis methods usually extract features from the waveforms or spectrums of vibration ... More
Community detection by label propagation with compression of flowNov 07 2016The label propagation algorithm (LPA) has been proved to be a fast and effective method for detecting communities in large complex networks. However, its performance is subject to the non-stable and trivial solutions of the problem. In this paper, we ... More
Antishadowing effects in the unitarized BFKL equationAug 02 2006Nov 13 2006A unitarized BFKL equation incorporating shadowing and antishadowing corrections of the gluon recombination is proposed. This equation reduces to the Balitsky-Kovchegov evolution equation near the saturation limit. We find that the antishadowing effects ... More
All-Optical Control of Light Group Velocity with a Cavity Optomechanical SystemNov 23 2010We theoretically demonstrate complete all-optical control of light group velocity via a cavity optomechanical system composed of an optical cavity and a mechanical resonator. The realization depends on no specific materials inside the cavity, and the ... More
Topological aspect of disclinations in two-dimensional meltingMay 30 2008Apr 22 2009By using topological current theory, we study the inner topological structure of disclinations during the melting of two-dimensional systems. From two-dimensional elasticity theory, it is found topological currents for topological defects in homogeneous ... More
Quasars around the Seyfert Galaxy NGC3516Dec 02 1997We report redshift measurements of 5 X-ray emitting blue stellar objects (BSO's) located less than 12 arc min from the X-ray Seyfert galaxy, NGC 3516. We find these quasars to be distributed along the minor axis of the galaxy and to show a very good correlation ... More
An optical diode made from a `flying' photonic crystalApr 03 2012Optical diodes controlling the flow of light are of principal significance for optical information processing 1. They transmit light from an input to an output, but not in reverse direction. This breaking of time reversal symmetry is typically achieved ... More
Masses of the Bottom-Charm Hybrid $\bar bGc$ StatesJun 14 2013Jan 07 2014QCD sum rules are used to study the mass spectrum of bottom-charm hybrid $\bar bGc$ systems. The correlation functions and the spectral densities are calculated up to dimension six condensates at leading order of $\alpha_s$ for several $J^P$ quantum numbers. ... More
Masses of the tensor mesons with $J^{P}=2^{-}$Jul 25 2011Aug 24 2014We calculate the two-point correlation function using the interpolating current with $J^{PC}=2^{-}$. After performing the Borel sum rule analysis, the extracted masses of the $2^{--}$ tensor charmonium and bottomonium are $3.97\pm0.25$ GeV and $10.13\pm0.34$ ... More
Global Phase Diagram of Competing Ordered and Quantum Spin Liquid Phases on the Kagomé LatticeDec 04 2014We study the quantum phase diagram of the spin-$1/2$ Heisenberg model on the kagom\'e lattice with first-, second-, and third-neighbor interactions $J_1$, $J_2$, and $J_3$ by means of density matrix renormalization group. For small $J_2$ and $J_3$, this ... More
The Communication Complexity of the Hamming Distance ProblemSep 26 2005Mar 10 2006We investigate the randomized and quantum communication complexity of the Hamming Distance problem, which is to determine if the Hamming distance between two n-bit strings is no less than a threshold d. We prove a quantum lower bound of \Omega(d) qubits ... More
An analytic method for sensitivity analysis of complex systemsAug 28 2016Sensitivity analysis is concerned with understanding how the model output depends on uncertainties (variances) in inputs and then identifies which inputs are important in contributing to the prediction imprecision. Uncertainty determination in output ... More
Hierarchic Power Allocation for Spectrum Sharing in OFDM-Based Cognitive Radio NetworksNov 26 2012In this paper, a Stackelberg game is built to model the hierarchic power allocation of primary user (PU) network and secondary user (SU) network in OFDM-based cognitive radio (CR) networks. We formulate the PU and the SUs as the leader and the followers, ... More
Interpreting the 750 GeV diphoton excess in the Minimal Dilaton ModelJan 11 2016Apr 18 2016We try to interpret the 750 GeV diphoton excess in the Minimal Dilaton Model, which extends the SM by adding one linearized dilaton field and vector-like fermions. We first show by analytic formulae in this framework that the production rates of the $\gamma ... More