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Results for "Ze-Gang Liu"

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Topological indexes in symmetry preserving dynamicsFeb 08 2018The quench dynamics of topological phases have received intensive investigations in recent years. In this work, we prove exactly that the topological invariants for both $\mathbb{Z}$ and $\mathbb{Z}_2$ indexes are independent of time in symmetry preserving ... More
Intersection number and the stability of some inscribable graphsDec 15 2014Jan 01 2015A planar graph is inscribable if it is combinatorial equivalent to the skeleton of a polyhedra which is inscribed in a sphere. For an inscribable graph, in its combinatorial equivalent class, if we could always find polyhedra inscribed in any given convex ... More
How many cages midscribe an egg?Dec 15 2014The Midscribability Theorem, which was first proved by O. Schramm, states that: given a strictly convex body $K\subset\mathbb{R}^{3}$ with smooth boundary and a convex polyhedron $P$, there exists a polyhedron $Q \subset \mathbb{RP}^3$ combinatorially ... More
Analysis of the scalar, axialvector, vector, tensor doubly charmed tetraquark states with QCD sum rulesOct 08 2017May 07 2018In this article, we construct the axialvector-diquark-axialvector-antidiquark type currents to interpolate the scalar, axialvector, vector, tensor doubly charmed tetraquark states, and study them with QCD sum rules systematically by carrying out the operator ... More
On Stability of Nodal $L_k^p$-Maps ISep 24 2015We give a general definition of weakly stable nodal $L_k^p$-maps as a natural generalization of the stability for $J$-holomorphic nodal maps in GW theory. A complete characterization of the weakly stable nodal $L_k^p$-maps are given in term of their isotropy ... More
On Nonlinear Part of Filled-Section in SplicingOct 14 2018We define the nonlinear part of a new filled section for Gromov-Witten theory in the setting of the usual Banach analysis rather than of ployfold theory and prove that the filled-section so defined is of class $C^1$.
Higher-degree Smoothness of Perturbations IOct 05 2017Jun 14 2019This paper was originated from overcoming the analytic difficulty in our method for constructing virtual moduli cycles in Gromov-Witten/Floer theory using global perturbations. We will discuss a new point of view on the analytic difficulty caused by the ... More
s-channel Single Top Quark Production and Decay at NNLO in QCDJul 10 2018We report on a fully differential next-to-next-to-leading order (NNLO) calculation of s-channel single top (anti-)quark production with a semi-leptonic decay at the LHC, neglecting the color correlation between the light and heavy quark lines and in the ... More
Geometric Equivariant Extension of Sections in GW Theory ISep 22 2015This paper is to explain one of the two constructions in our work [L] on analytic foundation of GW theory. We improve and clarify the results there.
Higher-degree Smoothness of Perturbations IISep 23 2018In this paper we generalize the higher-degree smoothness results in perturbation theory from the case that the stable maps have the fixed domain $S^2$ to the general genus zero case.
On Stability of Nodal $L_k^p$-Maps ISep 24 2015May 29 2019We give a general definition of weakly stable nodal $L_k^p$-maps as a natural generalization of the stability for $J$-holomorphic nodal maps in GW theory. A complete characterization of the weakly stable nodal $L_k^p$-maps are given in term of their isotropy ... More
On Linear Part of Filled-Section in SplicingOct 07 2018In this paper and its companion, we define a new filled-section in the splicing in the smooth model for GW theory, and prove that it is of class $C^1$ in the usual Banach analysis rather than in the frame work of polyfold theory.
Higher-degree Smoothness of Perturbations IIISep 30 2018This paper is the continuation of the previous two papers with the same title.
The Three-loop Quark Jet FunctionApr 25 2018Sep 18 2018We calculate the massless quark jet function to three-loop order. The quark jet function is a universal ingredient in SCET factorization for many collider and decay processes with quark initiated final state jets. Our three-loop result contributes to ... More
Topological Nonsymmorphic Crystalline SuperconductorsJun 26 2015Nov 26 2015Topological superconductors possess a nodeless superconducting gap in the bulk and gapless zero energy modes, known as "Majorana zero modes", at the boundary of a finite system. In this work, we introduce a new class of topological superconductors, which ... More
The structure of product bases of $\mathbb{C}^{2}\bigotimes\mathbb{C}^{n}$Jun 30 2016In this paper, we mainly characterize the structure of product bases of the complex vector space $\mathbb{C}^{2}\bigotimes\mathbb{C}^{n}$. It gives an answer to the conjecture in case of $d=2n$ proposed by McNulty et al in 2016. As the application of ... More
Nearly Cloaking the Full Maxwell EquationsOct 09 2012May 09 2013The approximate cloaking is investigated for time-harmonic Maxwell's equations via the approach of transformation optics. The problem is reduced to certain boundary effect estimates due to an inhomogeneous electromagnetic inclusion with an asymptotically ... More
Advanced LSTM: A Study about Better Time Dependency Modeling in Emotion RecognitionOct 27 2017Long short-term memory (LSTM) is normally used in recurrent neural network (RNN) as basic recurrent unit. However,conventional LSTM assumes that the state at current time step depends on previous time step. This assumption constraints the time dependency ... More
On Harmonic $ν$-Bloch and $ν$-Bloch-type mappingsJul 05 2017The aim of this paper is twofold. One is to introduce the class of harmonic $\nu$-Bloch-type mappings as a generalization of harmonic $\nu$-Bloch mappings and thereby we generalize some recent results of harmonic $1$-Bloch-type mappings investigated recently ... More
A Monte Carlo Study of the Levy Stability and Multifractal Spectrum in e+e- collisionsApr 12 2002The Levy stability analysis is carried out for e+e- collisions at Z^0 mass using Monte Carlo method. The Levy index \mu is found to be \mu=1.701 +- 0.043. The self-similar generalized dimensions D(q) and multi-fractal spectrum f(\alpha) are presented. ... More
Uniformly locally univalent harmonic mappings associated with the pre-Schwarzian normJul 05 2017Jan 04 2018In this paper, we consider the class of uniformly locally univalent harmonic mappings in the unit disk and build a relationship between its pre-Schwarzian norm and uniformly hyperbolic radius. Also, we establish eight ways of characterizing uniformly ... More
Compositions of polyharmonic mappingsOct 20 2016The paper is devoted to the study of compositions of polyharmonic mappings in simply connected domains. More precisely, we determine necessary and sufficient conditions of polyharmonic mapping $f$ such that $f\circ F$ (resp. $F\circ f$) is $l$-harmonic ... More
Mechanical buckling induced periodic kinking/stripe microstructures in mechanically peeled graphite flakes from HOPGSep 24 2014Mechanical exfoliation is a widely used method to isolate high quality graphene layers from bulk graphite. In our recent experiments, some ordered microstructures, consisting of a periodic alternation of kinks and stripes, were observed in thin graphite ... More
Interlayer binding energy of graphite -- A direct experimental determinationApr 08 2011Despite interlayer binding energy is one of the most important material properties for graphite, there is still lacking report on its direct experimental determination. In this paper, we present a novel experimental method to directly measure the interlayer ... More
Harmonic pre-Schwarzian and its applicationsJul 05 2017The primary aim of this article is to extend certain inequalities concerning the pre-Schwarzian derivatives from the case of analytic univalent functions to that of univalent harmonic mappings defined on certain domains. This is done in two different ... More
A geometric interpretation of Kirillov's ConjectureJun 17 2018Jul 20 2018In this article, we give a natural geometric interpretation of Kirillov's conjecture for tempered representations in the framework of orbit method. This interpretation can also be considered as a first generalization of Duflo's conjecture to non-discrete ... More
An Improved Dilaton Background in Soft-Wall ModelSep 18 2010We adopted the form of v.e.v. of the bulk scalar field proposed by P.Zhang in this paper, and changed the dilaton background from $e^{-\kappa^2z^2}$ to $e^{-\kappa^2z^2+\alpha z}$ accordingly. The calculation shows that, as if we choose proper parameters, ... More
Searching for axionlike particle at future $ep$ collidersApr 24 2019Jul 17 2019We explore the possibility of searching for axionlike particle (ALP) by $ep$ collisions via the subprocess $e^{-}\gamma \rightarrow e^{-}a \rightarrow e^{-}\gamma\gamma$. Sensitivities to the effective ALP-photon coupling $g_{a\gamma\gamma}$ for its mass ... More
Searching for axion-like particle at future $ep$ collidersApr 24 2019We explore the possibility of searching for axion-like particle (ALP) by $ep$ collisions via the subprocess $e^{-}\gamma \rightarrow e^{-}a \rightarrow e^{-}\gamma\gamma$. Sensitivities to the effective ALP-photon coupling $g_{a\gamma\gamma}$ for its ... More
Convergence rates in the law of large numbers under sublinear expectationsMar 14 2019In this note, we study convergence rates in the law of large numbers for independent and identically distributed random variables under sublinear expectations. We obtain a strong $L^p$-convergence version and a strongly quasi sure convergence version ... More
A Black Hole - White Dwarf Compact Binary Model for Long Gamma-ray Bursts without Supernova AssociationDec 07 2017Jan 24 2018Gamma-ray bursts (GRBs) are luminous and violent phenomena in the universe. Traditionally, long GRBs are expected to be produced by the collapse of massive stars and associated with supernovae. However, some low-redshift long GRBs have no detection of ... More
RepPoints: Point Set Representation for Object DetectionApr 25 2019Modern object detectors rely heavily on rectangular bounding boxes, such as anchors, proposals and the final predictions, to represent objects at various recognition stages. The bounding box is convenient to use but provides only a coarse localization ... More
Learning low-precision neural networks without Straight-Through Estimator(STE)Mar 04 2019May 20 2019The Straight-Through Estimator (STE) is widely used for back-propagating gradients through the quantization function, but the STE technique lacks a complete theoretical understanding. We propose an alternative methodology called alpha-blending (AB), which ... More
Self-retracting motion of graphite micro-flakes: superlubricity in micrometer scaleApr 17 2011Through experimental study, we reveal superlubricity as the mechanism of self-retracting motion of micrometer sized graphite flakes on graphite platforms by correlating respectively the lock-up or self-retraction states with the commensurate or incommensurate ... More
The nature of the Li enrichment in the most Li-rich giant starSep 01 2018About one percent of giants\upcite{Brown1989} are detected to have anomalously high lithium (Li) abundances in their atmospheres, conflicting directly with the prediction of the standard stellar evolution models\upcite{Iben1967}, and making the production ... More
TianQin: a space-borne gravitational wave detectorDec 07 2015TianQin is a proposal for a space-borne detector of gravitational waves in the millihertz frequencies. The experiment relies on a constellation of three drag-free spacecraft orbiting the Earth. Inter-spacecraft laser interferometry is used to monitor ... More
Interlayer shear strength of single crystalline graphiteJul 08 2012Jul 10 2012Reported values (0.2 MPa ~ 7.0 GPa) of the interlayer shear strength (ISS) of graphite are very dispersed. The main challenge to obtain a reliable value of ISS is the lack of precise experimental methods. Here we present a novel experimental approach ... More
Anti-rumor dynamics and emergence of the timing threshold on complex networkOct 27 2013Jun 28 2014Anti-rumor dynamics is proposed on the basis of rumor dynamics and the characteristics of anti-rumor dynamics are explored by both mean-field equations and numerical simulations on complex network. The main metrics we study are the timing effect of combating ... More
Chaotic Behavior of a One-dimensional Model Atom in an Intense FieldJan 07 1998In this paper we describe the rescattering process in optical field ionization through a one-dimensional model, which improves the well-known quasistatic model by adding the smoothed Coulomb potential in its second step. The above-threshold ionization ... More
Imagination Based Sample Construction for Zero-Shot LearningOct 29 2018Zero-shot learning (ZSL) which aims to recognize unseen classes with no labeled training sample, efficiently tackles the problem of missing labeled data in image retrieval. Nowadays there are mainly two types of popular methods for ZSL to recognize images ... More
High Thermoelectric Performance in Two-Dimensional Tellurium: An Ab Initio StudyJun 01 2019In 2016, bulk tellurium was experimentally observed as a remarkable thermoelectric material. Recently, two-dimensional (2D) tellurium, called tellurene, has been synthesized and has exhibited unexpected electronic properties compared with the 2D MoS$_2$. ... More
Spin ordered ground state and thermodynamic behaviors of the spin-3/2 kagome Heisenberg antiferromagnetMar 07 2016Sep 17 2016Three different tensor network optimization algorithms are employed to accurately determine the ground state and thermodynamic properties of the spin-3/2 kagome Heisenberg antiferromagnet. We found that the $\sqrt{3} \times \sqrt{3}$ state, rather than ... 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
A New P2N Approach to Software Development Under the ClusteringJul 23 2012In this computer era of rapid development, software development can be seen everywhere, but a lot of softwares are dead in modern development of software. Just as The Mythical Man-Month said, it exists a problem in the software development, and the problem ... More
Decoupled Uplink and Downlink in a Wireless System with Buffer-Aided RelayingSep 21 2016Sep 22 2016The paper treats a multiuser relay scenario where multiple user equipments (UEs) have a two-way communication with a common Base Station (BS) in the presence of a buffer-equipped Relay Station (RS). Each of the uplink (UL) and downlink (DL) transmission ... More
Anisotropic thermal expansion and thermomechanic properties of monolayer $β$-TeMay 11 2019Recently, $\beta$-Te (atomically 2D tellurium) with rectangular crystal structure has been synthesized successfully on highly oriented pyrolytic graphite substrates by using molecular beam epitaxy. It has been found possessing remarkable properties such ... More
Simulating heavy fermion physics in optical lattice: Periodic Anderson model with harmonic trapping potentialOct 14 2016Oct 19 2016Periodic Anderson model (PAM), where local electron orbitals interplay with itinerant electronic carriers, plays an essential role in our understanding on heavy fermion materials. Motivated by recent proposal of simulating Kondo lattice model (KLM) in ... More
Improving Few-Shot User-Specific Gaze Adaptation via Gaze Redirection SynthesisApr 24 2019As an indicator of human attention gaze is a subtle behavioral cue which can be exploited in many applications. However, inferring 3D gaze direction is challenging even for deep neural networks given the lack of large amount of data (groundtruthing gaze ... More
Linear measure and $K$-quasiconformal harmonic mappingsDec 03 2016In this paper, we investigate the relationships between linear measure and harmonic mappings.
Off-shell BCJ Relation in Nonlinear Sigma ModelSep 07 2016We investigate relations among tree-level off-shell currents in nonlinear sigma model. Under Cayley parametrization, we propose and prove a general revised BCJ relation for even-point currents. Unlike the on-shell BCJ relation, the off-shell one behaves ... More
On the Factorial Moment Analysis of High Energy Experimental Data with Non-integer Partition NumberDec 11 1998It is pointed out that in doing the factorial moment analysis with non-integer partition $M$ of phase space, the influence of the phase-space variation of two- (or more-) particle correlations has to be considered carefully. In this paper this problem ... More
An Adaptive XP-based approach to Agile DevelopmentMay 24 2012Jul 23 2012Software design is gradually becoming open, distributed, pervasive, and connected. It is a sad statistical fact that software projects are scientifically fragile and tend to fail more than other engineering fields. Agile development is a philosophy. And ... More
Meaningful Objects Segmentation from SAR Images via A Multi-Scale Non-Local Active Contour ModelJan 17 2015The segmentation of synthetic aperture radar (SAR) images is a longstanding yet challenging task, not only because of the presence of speckle, but also due to the variations of surface backscattering properties in the images. Tremendous investigations ... More
An Ensemble Framework of Voice-Based Emotion Recognition System for Films and TV ProgramsMar 03 2018Employing voice-based emotion recognition function in artificial intelligence (AI) product will improve the user experience. Most of researches that have been done only focus on the speech collected under controlled conditions. The scenarios evaluated ... More
Symmetry protected Spin Quantum Hall phases in 2-DimensionsMay 31 2012Feb 08 2013Symmetry protected topological (SPT) states are short-range entangled states with symmetry. Nontrivial SPT states have symmetry protected gapless edge excitations. In 2-dimension (2D), there are infinite number of nontrivial SPT phases with SU(2) or SO(3) ... More
Extended dual description of Mott transition beyond two-dimensional spaceNov 17 2011Motivated by recent work of Mross and Senthil [Phys. Rev. B \textbf{84}, 165126 (2011)] which provides a dual description for Mott transition from Fermi liquid to quantum spin liquid in two space dimensions, we extend their approach to higher dimensional ... More
Decomposition of Three-Dimensional Steady Non-isentropic Compressible Euler System and Stability of Spherically Symmetric Subsonic Flows and Transonic Shocks under Multidimensional PerturbationsMay 12 2015We develop a method that works in general product Riemannian manifold to decompose the three-dimensional steady full compressible Euler system, which is of elliptic-hyperbolic composite-mixed type for subsonic flows. The method is applied to show stability ... More
Strain Effects on the Mechanical Properties of Group-V Monolayers with Buckled Honeycomb StructuresApr 08 2019Based on first-principles calculations, we study systematically the ideal tensile stress-strain relations of three monoatomic group-V monolayer two dimensional (2D) materials with buckled honeycomb lattices: blue phosphorene, arsenene, and antimonene. ... More
Exponential energy decay of solutions for a system of viscoelastic wave equations of Kirchhoff type with strong dampingSep 27 2011The initial boundary value problem for a system of viscoelastic wave equations of Kirchhoff type with strong damping is considered. We prove that, under suitable assumptions on relaxation functions and certain initial data, the decay rate of the solutions ... More
Hybrid Parallel Bidirectional Sieve based on SMP ClusterMay 22 2012In this article, hybrid parallel bidirectional sieve method is implemented by SMP Cluster, the individual computational units joined together by the communication network, are usually shared-memory systems with one or more multicore processor. To high-efficiency ... More
More hidden heavy quarkonium molecules and their discovery decay modesSep 02 2014To validate the molecular description of the observed $Z_b(10610)/Z_b(10650)$ and $Z_c(3900)/Z_c(4025)$, it is valuable to investigate their counterparts, denoted as $Z_{QV}^{(\prime)}$ in this work, and the corresponding decay modes. In this work, we ... More
On Inertial Navigation and Attitude Initialization in Polar AreasMar 28 2019Mar 29 2019Inertial navigation and attitude initialization in polar areas become a hot topic in recent years in the navigation community, as the widely-used navigation mechanization of the local level frame encounters the inherent singularity when the latitude approaches ... More
Ground test of satellite constellation based quantum communicationNov 30 2016Satellite based quantum communication has been proven as a feasible way to achieve global scale quantum communication network. Very recently, a low-Earth-orbit (LEO) satellite has been launched for this purpose. However, with a single satellite, it takes ... More
Global nonexistence of solutions for the viscoelastic wave equation of Kirchhoff type with high energySep 27 2011In this paper we consider the viscoelastic wave equation of Kirchhoff type: $$ u_{tt}-M(\|\nabla u\|_{2}^{2})\Delta u+\int_{0}^{t}g(t-s)\Delta u(s){\rm d}s+u_{t}=|u|^{p-1}u $$ with Dirichlet boundary conditions. Under some suitable assumptions on $g$ ... More
Gate Tunable Dissipation and "Superconductor-Insulator" Transition in Carbon Nanotube Josephson TransistorsJun 16 2008Nov 21 2008Dissipation is ubiquitous in quantum systems, and its interplay with fluctuations is critical to maintaining quantum coherence. We experimentally investigate the dissipation dynamics in single-walled carbon nanotubes coupled to superconductors. The voltage-current ... More
On decay and blow-up of solutions for a singular nonlocal viscoelastic problem with a nonlinear source termMar 18 2013In this paper we consider a singular nonlocal viscoelastic problem with a nonlinear source term and a possible damping term. We proved that if the initial data enter into the stable set, the solution exists globally and decays to zero with a more general ... More
Multiplicity free gradings on semisimple Lie and Jordan algebras and skew rootNov 12 2016A $G$-grading on an algebra is called multiplicity free if each homogeneous component of the grading is 1-dimensional, where $G$ is an abelian group. We introduce skew root systems of Lie type and skew root systems of Jordan type respectively, and use ... More
Shape Robust Text Detection with Progressive Scale Expansion NetworkJun 07 2018The challenges of shape robust text detection lie in two aspects: 1) most existing quadrangular bounding box based detectors are difficult to locate texts with arbitrary shapes, which are hard to be enclosed perfectly in a rectangle; 2) most pixel-wise ... More
Chemical-disorder-caused Medium Range Order in Covalent GlassMar 13 2017How atoms in covalent solids rearrange over a medium-range length-scale during amorphization is a long pursued question whose answer could profoundly shape our understanding on amorphous (a-) networks. Based on ab-intio calculations and reverse Monte ... More
A Neutron Star-White Dwarf Binary Model for Repeating Fast Radio Burst 121102Apr 18 2016May 09 2016We propose a compact binary model for the fast radio burst (FRB) repeaters, where the system consists of a magnetic white dwarf (WD) and a neutron star (NS) with strong bipolar magnetic fields. When the WD fills its Roche lobe, mass transfer will occur ... More
A General Theory for Direct Quantitative Analysis of AntigenApr 23 2011Jul 26 2012A theory for direct quantitative analysis of an antigen is proposed. It is based on a potential homogenous immunoreaction system. It establishes an equation to describe the concentration change of the antigen and antibody complex. A maximum point is found ... More
Stochastic and long-distance level spacing statistics in many-body localizationJan 28 2019From the random matrix theory all the energy levels should be strongly correlated due to the presence of all off-diagonal entries.In this work we introduce two new statistics to more accurately characterize these long-distance interactions in the disordered ... More
Transverse-Momentum Resummation for Gauge Boson Pair Production at the Hadron ColliderJul 29 2013Jul 31 2013We perform the transverse-momentum resummation for $W^{+}W^{-}$, $ZZ$, and $W^{\pm}Z$ pair productions at the next-to-next-to-leading logarithmic accuracy using soft-collinear effective theory for $\sqrt{S}=8 \text{TeV}$ and $\sqrt{S}=14 \text{TeV}$ at ... More
Solitons as candidates for energy carriers in Fermi-Pasta-Ulam latticesFeb 09 2018Currently, effective phonons (renormalized or interacting phonons) rather than solitary waves (for short, solitons) are regarded as the energy carriers in nonlinear lattices. In this work, by using the approximate soliton solutions of the corresponding ... More
Threshold resummation for the production of a color sextet (antitriplet) scalar at the LHCMay 22 2013Mar 03 2014We investigate threshold resummation effects in the production of a color sextet (antitriplet) scalar at next-to-next-to-leading logarithmic (NNLL) order at the LHC in the frame of soft-collinear effective theory. We show the total cross section and the ... More
Charm-quark production in deep-inelastic neutrino scattering at NNLO in QCDJan 20 2016Jun 29 2016We present a fully differential next-to-next-to-leading order calculation of charm quark production in charged-current deep-inelastic scattering, with full charm-quark mass dependence. The next-to-next-to-leading order corrections in perturbative quantum ... More
On Reinforcement Learning for Full-length Game of StarCraftSep 23 2018Feb 03 2019StarCraft II poses a grand challenge for reinforcement learning. The main difficulties of it include huge state and action space and a long-time horizon. In this paper, we investigate a hierarchical reinforcement learning approach for StarCraft II. The ... More
What Powered the Optical Transient AT2017gfo Associated with GW170817?Apr 18 2018Jul 16 2018The groundbreaking discovery of the optical transient AT2017gfo associated with GW170817 opens a unique opportunity to study the physics of double neutron star (NS) mergers. We argue that the standard interpretation of AT2017gfo as being powered by radioactive ... More
Weak Topological Insulators in PbTe/SnTe SuperlatticesSep 30 2013Oct 10 2013It is desirable to realize topological phases in artificial structures by engineering electronic band structures. In this paper, we investigate $(PbTe)_m(SnTe)_{2n-m}$ superlattices along [001] direction and find a robust weak topological insulator phase ... More
Tame the flexibility of circle patternsMay 22 2018This paper proves a deformation circle pattern theorem, which gives a complete description of those circle patterns with interstices in terms of the combinatorial type, the exterior intersections angles and the conformal structures of interstices. As ... More
Circle patterns with obtuse exterior intersection anglesMar 06 2017Feb 09 2018Koebe-Andreev-Thurston theorem studies the existence and rigidity of circle patterns of a given combinatorial type and the given non-obtuse exterior intersection angles. By using the topological degree theory and variational principle, this paper derives ... More
A remark on the Abel-Jacobi morphism for the cubic threefoldDec 30 2012Let $X$ be a smooth cubic threefold and $J(X)$ be its intermediate Jacobian. We show that there exists a codimension 2 cycle $Z$ on $J(X)\times X$ with $Z_{t}$ homologically trivial for each $t\in J(X)$, such that the morphism $\phi_{Z}: J(X)\rightarrow ... More
On Hard Lefschetz Conjecture on Lawson HomologyJan 26 2011Friedlander and Mazur proposed a conjecture of hard Lefschetz type on Lawson homology. We shall relate this conjecture to Suslin conjecture on Lawson homology. For abelian varieties, this conjecture is shown to be equivalent to a vanishing conjecture ... More
Graphite NanoeraserOct 20 2010We present here a method for cleaning intermediate-size (5~50nm) contamination from highly oriented pyrolytic graphite. Electron beam deposition causes a continuous increase of carbonaceous material on graphene and graphite surfaces, which is difficult ... More
Temperature effect on lattice and electronic structures of WTe$_2$ from first-principles studySep 13 2016Sep 17 2016Tungsten ditelluride (WTe$_2$) exhibits extremely large and unsaturated magnetoresistance (MR). Due to the large spatially extensions of Te-5p and W-5d orbitals, the electronic properties of WTe$_2$ are sensitive to the lattice structures, which can probably ... More
Texture Characterization by Using Shape Co-occurrence PatternsFeb 10 2017Texture characterization is a key problem in image understanding and pattern recognition. In this paper, we present a flexible shape-based texture representation using shape co-occurrence patterns. More precisely, texture images are first represented ... More
B_{s1}(5830) and B_{s2}^*(5840)Jan 05 2009Apr 07 2009In this paper we investigate the strong decays of the two newly observed bottom-strange mesons $B_{s1}(5830)$ and $B_{s2}^*(5840)$ in the framework of the quark pair creation model. The two-body strong decay widths of $B_{s1}(5830)^0\to B^{*+}K^-$ and ... More
Note on off-shell relations in nonlinear sigma modelDec 11 2014Feb 09 2015In this note, we investigate relations between tree-level off-shell currents in nonlinear sigma model. Under Cayley parametrization, all odd-point currents vanish. We propose and prove a generalized $U(1)$ identity for even-point currents. The off-shell ... More
Fringe Structure in the Phase-Space Dynamics of Atomic Stabilization in An Intense FieldJul 12 2002An analytical expression of a Floquet operator, which describes the evolution of a wave packet in combined atomic and an intense laser field,is obtained approximately in the stabilization regime. Both the classical and quantum versions of the Floquet ... More
MoS2-graphene in-plane contact for high interfacial thermal conductionMar 23 2017Recent studies showed that the in-plane and inter-plane thermal conductivities of two-dimensional (2D) MoS2 are low, posing a significant challenge in heat management in MoS2-based electronic devices. To address this challenge, we design the interfaces ... More
Lithography-Free, Low-Cost Method for Improving Photodiode Performance by Etching Silicon Nanocones as Antireflection LayerApr 21 2016A three-step process has been demonstrated to improve the performance of photodiode by creating nanocone forest on the surface of photodiode as an antireflection layer. This high-throughput, low-cost process has been shown to decrease the reflectivity ... More
Deep Hybrid Scattering Image LearningSep 19 2018A well-trained deep neural network is shown to gain capability of simultaneously restoring two kinds of images, which are completely destroyed by two distinct scattering medias respectively. The network, based on the U-net architecture, can be trained ... More
Thermal Dynamics of Graphene Edges Investigated by Polarized Raman SpectroscopyDec 14 2010In this report, we present Raman spectroscopy investigation of the thermal stability and dynamics of graphene edges. It was found that graphene edges (both armchair and zigzag) are not stable and undergo modifications even at temperature as low as 200{\deg}C. ... More
Efficient Reinforcement Learning with a Mind-Game for Full-Length StarCraft IIMar 02 2019StarCraft II provides an extremely challenging platform for reinforcement learning due to its huge state-space and game length. The previous fastest method requires days to train a full-length game policy in a single commercial machine. In this paper, ... More
HAKE: Human Activity Knowledge EngineApr 13 2019Jul 19 2019Human activity understanding is crucial for building automatic intelligent system. With the help of deep learning, activity understanding has made huge progress recently. But some challenges such as imbalanced data distribution, action ambiguity, complex ... More
Hybrid quantum device based on NV centers in diamond nanomechanical resonators plus superconducting waveguide cavitiesMar 09 2015Sep 16 2015We propose and analyze a hybrid device by integrating a microscale diamond beam with a single built-in nitrogen-vacancy (NV) center spin to a superconducting coplanar waveguide (CPW) cavity. We find that under an ac electric field the quantized motion ... More
HAKE: Human Activity Knowledge EngineApr 13 2019May 08 2019Human activity understanding is crucial for building automatic intelligent system. With the help of deep learning, activity understanding has made huge progress recently. But some challenges such as imbalanced data distribution, action ambiguity, complex ... More
Studying newborn neutron stars by the transient emission after stellar collapses and compact binary mergersApr 09 2019The formation of neutron stars (NSs), both from collapses of massive stars and mergers of compact objects, can be usually indicated by bright transients emitted from explosively-ejected material. In particular, if the newborn NSs can rotate at a millisecond ... More
X(3915) and X(4350) as new members in P-wave charmonium familyNov 19 2009Mar 06 2010The analysis of the mass spectrum and the calculation of the strong decay of P-wave charmonium states strongly support to explain the newly observed X(3915) and X(4350) as new members in P-wave charmonium family, i.e., $\chi_{c0}^\prime$ for X(3915) and ... More
BARS: a Blockchain-based Anonymous Reputation System for Trust Management in VANETsJul 17 2018The public key infrastructure (PKI) based authentication protocol provides the basic security services for vehicular ad-hoc networks (VANETs). However, trust and privacy are still open issues due to the unique characteristics of vehicles. It is crucial ... More