Results for "Yang Bai"

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Complexities Approach to Two Problems In Number TheoryOct 13 2016Oct 14 2016By Kolmogorov Complexity,two number-theoretic problems are solved in different way than before,one problem is Maxim Kontsevich and Don Bernard Zagier's Problem 3 \emph{Exhibit at least one number which does not belong to} $ \mathcal{P}$ (period number) ... More
Complexities Approach to Two Problems In Number TheoryOct 13 2016Oct 21 2016By Kolmogorov Complexity,two number-theoretic problems are solved in different way than before,one problem is Maxim Kontsevich and Don Bernard Zagier's Problem 3 \emph{Exhibit at least one number which does not belong to} $ \mathcal{P}$ (period number) ... More
Compression Protocols for Tensor Network StatesApr 14 2019We show that tensor network states of n identical quantum systems can be faithfully compressed into O(log n) memory qubits. For a given parametric family of tensor network states, our technique is based on a partition of the tensor network into constant ... More
Hexapod Coloron at the LHCMay 24 2018Instead of the usual dijet decay, the coloron may mainly decay into its own "Higgs bosons", which subsequently decay into many jets. This is a general feature of the renormalizable coloron model, where the corresponding "Higgs bosons" are a color-octet ... More
Measuring the Black Hole Mass Spectrum from Redshifts of aLIGO Binary Merger EventsFeb 14 2018Mar 22 2019The binary black hole merger events observed by the Advanced LIGO (aLIGO) and VIRGO collaboration can shed light on the origins of black holes. Many studies based on black hole stellar origins have shown a maximum mass for stellar black holes, which can ... More
Cosmological Constraints on the Gravitational Interactions of Matter and Dark MatterMay 18 2015Although there is overwhelming evidence of dark matter from its gravitational interaction, we still do not know its precise gravitational interaction strength or whether it obeys the equivalence principle. Using the latest available cosmological data ... More
Three-dimensional non-isothermal phase-field modeling of microstructure evolution during selective laser sinteringFeb 12 2019Feb 20 2019Predicting the microstructure during selective laser sintering (SLS) is of great interests, which can compliment the current time and cost expensive trial-and-error principle with an efficient computational design tool. However, it still remains a great ... More
A Combined Chandra and LAMOST Study of Stellar ActivityDec 14 2018We probed stellar X-ray activity over a wide range of stellar parameters, using {\it Chandra} and LAMOST data. We measured the X-ray-to-bolometric luminosity ratio ($R_X = L_X/L_{\rm bol}$) for 484 main-sequence stars, and found a bimodal distribution ... More
Verifying Stochastic Behaviors of Decentralized Self-Adaptive Systems: A Formal Modeling and Simulation Based ApproachJun 26 2017Dec 28 2017Self-adaptive software is considered as the most advanced approach and its development attracts a lot of attention. Decentralization is an effective way to design and manage the complexity of modern self-adaptive software systems. However, there are still ... More
Determination of optimal reversed field with maximal electrocaloric cooling by a direct entropy analysisAug 11 2016Aug 30 2016Application of a negative field on a positively poled ferroelectric sample can enhance the electrocaloric cooling and appears as a promising method to optimize the electrocaloric cycle. Experimental measurements show that the maximal cooling does not ... More
Multipartite quantum correlation and entanglement in four-qubit pure statesMar 13 2007Sep 01 2007Based on the quantitative complementarity relations, we analyze thoroughly the properties of multipartite quantum correlations and entanglement in four-qubit pure states. We find that, unlike the three-qubit case, the single residual correlation, the ... More
Mini Little Higgs and Dark MatterJan 10 2008Aug 25 2008We construct a little Higgs model with the most minimal extension of the standard model gauge group by an extra U(1) gauge symmetry. For specific charge assignments of scalars, an approximate U(3) global symmetry appears in the cutoff-squared scalar mass ... More
Tailoring the electrocaloric effect by internal bias fields and field protocolsMay 11 2018May 14 2018In acceptor doped ferroelectrics and in ferroelectric films and nanocomposites, defect dipoles, strain gradients, and the electric boundary conditions at interfaces and surfaces often impose internal bias fields. In this work we delicately study the impact ... More
Visualizing and Comparing Convolutional Neural NetworksDec 20 2014Dec 26 2014Convolutional Neural Networks (CNNs) have achieved comparable error rates to well-trained human on ILSVRC2014 image classification task. To achieve better performance, the complexity of CNNs is continually increasing with deeper and bigger architectures. ... More
A novel energy-based phase field model for ferrodroplet deformation and breakup in a uniform magnetic fieldMar 30 2017Oct 30 2017In this paper, we propose a novel, thermodynamically consistent phase field model to simulate the deformation and breakup of a ferrodroplet that is immersed in a viscous medium and subject to an applied uniform magnetic field. Instead of using the magnetic ... More
Phase-field modeling of non-isothermal grain coalescence in the unconventional sintering techniquesJun 07 2018A thermodynamically consistent phase-field model is developed to study the non-isothermal grain coalescence during the sintering process, with a potential application to the simulation in unconventional sintering techniques, e.g. spark plasma sintering, ... More
Machine learning Applied to Star-Galaxy-QSO Classification and Stellar Effective Temperature RegressionNov 09 2018In modern astrophysics, the machine learning has increasingly gained more popularity with its incredibly powerful ability to make predictions or calculated suggestions for large amounts of data. We describe an application of the supervised machine-learning ... More
Thermodynamical Properties and Quasi-localized Energy of the Stringy Dyonic Black Hole SolutionOct 31 2011In this article, we calculate the heat flux passing through the horizon $. {\bf TS}|_{r_h}$ and the difference of energy between the Einstein and M{\o}ller prescription within the region ${\cal M}$, in which is the region between outer horizon ${\cal ... More
Goldstone Modes and Clebsch-Gordan CoefficientsDec 31 2017Jun 29 2018We solve explicitly the Goldstone modes in spontaneously symmetry breaking models with supersymmetry. We find that, when more than one fields or representations contribute to the symmetry breaking, there exist identities among the Clebsch-Gordan coefficients ... More
Integrating Scene Text and Visual Appearance for Fine-Grained Image ClassificationApr 15 2017May 30 2017Text in natural images contains rich semantics that are often highly relevant to objects or scene. In this paper, we focus on the problem of fully exploiting scene text for visual understanding. The main idea is combining word representations and deep ... More
GCN-GAN: A Non-linear Temporal Link Prediction Model for Weighted Dynamic NetworksJan 26 2019In this paper, we generally formulate the dynamics prediction problem of various network systems (e.g., the prediction of mobility, traffic and topology) as the temporal link prediction task. Different from conventional techniques of temporal link prediction ... More
Kinematic properties of the dual AGN system J0038+4128 based on long-slit spectroscopyOct 08 2015The study of kiloparsec-scale dual active galactic nuclei (AGN) will provide important clues to understand the co-evolution between the host galaxies and their central supermassive black holes undergoing a merging process. We present long-slit spectroscopy ... More
Inferring Social Status and Rich Club Effects in Enterprise Communication NetworksApr 14 2014Apr 14 2015Social status, defined as the relative rank or position that an individual holds in a social hierarchy, is known to be among the most important motivating forces in social behaviors. In this paper, we consider the notion of status from the perspective ... More
General monogamy relation of multi-qubit systems in terms of squared Rényi-$α$ entanglementDec 09 2015We prove that the squared R\'{e}nyi-$\alpha$ entanglement (SR$\alpha$E), which is the generalization of entanglement of formation (EOF), obeys a general monogamy inequality in an arbitrary $N$-qubit mixed state. Furthermore, for a class of R\'{e}nyi-$\alpha$ ... More
Super Damping of Mechanical VibrationsNov 21 2018Dec 03 2018We report the phenomenon of coherent super decay, where a linear sum of several damped oscillators can collectively decay much faster than the individual ones in the first stage, followed by stagnating ones after more than 90 percent of the energy has ... More
Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4m telescopeNov 26 2015The ultraviolet broad absorption lines have been seen in the spectra of quasars at high redshift, and are generally considered to be caused by outflows with velocities from thousands kilometers per second to one tenth of the speed of light. They provide ... More
Chromo-Rayleigh Interactions of Dark MatterJun 23 2015For a wide range of models, dark matter can interact with QCD gluons via chromo-Rayleigh interactions. We point out that the Large Hadron Collider (LHC), as a gluon machine, provides a superb probe of such interactions. In this paper, we introduce simplified ... More
Lepton Portal Dark MatterFeb 26 2014We study a class of simplified dark matter models in which dark matter couples directly with a mediator and a charged lepton. This class of Lepton Portal dark matter models has very rich phenomenology: it has loop generated dark matter electromagnetic ... More
Microlensing of X-ray Pulsars: a Method to Detect Primordial Black Hole Dark MatterNov 28 2018Primordial black holes (PBHs) with a mass from $10^{-16}$ to $10^{-11}\,M_\odot$ may comprise 100% of dark matter. Due to a combination of wave and finite source size effects, the traditional microlensing of stars does not probe this mass range. In this ... More
Measuring the Dark Force at the LHCFeb 02 2009Aug 01 2009A long-range ``dark force'' has recently been proposed to mediate the dark matter (DM) annihilation. If DM particles are copiously produced at the Large Hadron Collider (LHC), the light dark force mediator will also be produced through radiation. We demonstrate ... More
Gamma Lines without a Continuum: Thermal Models for the Fermi-LAT 130 GeV Gamma LineAug 20 2012Recent claims of a line in the Fermi-LAT photon spectrum at 130 GeV are suggestive of dark matter annihilation in the galactic center and other dark matter-dominated regions. If the Fermi feature is indeed due to dark matter annihilation, the best-fit ... More
Reach the Bottom Line of the Sbottom SearchApr 23 2012We propose a new search strategy for directly-produced sbottoms at the LHC with a small mass splitting between the sbottom and its decayed stable neutralino. Our search strategy is based on boosting sbottoms through an energetic initial state radiation ... More
A Unified Dark Matter Model in sUEDNov 04 2008May 26 2009We propose a dark matter model with standard model singlet extension of the universal extra dimension model (sUED) to explain the recent observations of ATIC, PPB-BETS, PAMELA and DAMA. Other than the standard model fields propagating in the bulk of a ... More
Improving the Top Quark Forward-Backward Asymmetry Measurement at the LHCJun 24 2011At the LHC, top quark pairs are dominantly produced from gluons, making it difficult to measure the top quark forward-backward asymmetry. To improve the asymmetry measurement, we study variables that can distinguish between top quarks produced from quarks ... More
Efficient spin injection into graphene through a tunnel barrier: overcoming the spin conductance mismatchNov 04 2014Employing first-principles calculations, we investigate efficiency of spin injection from a ferromagnetic (FM) electrode (Ni) into graphene and possible enhancement by using a barrier between the electrode and graphene. Three types of barriers, h-BN, ... More
Positive and negative electrocaloric effect in BaTiO$_3$ in the presence of defect dipolesJul 17 2015Mar 21 2016The influence of defect dipoles on the electrocaloric effect (ECE) in acceptor doped BaTiO$_3$ is studied by means of lattice-based Monte-Carlo simulations. A Ginzburg-Landau type effective Hamiltonian is used. Oxygen vacancy-acceptor associates are described ... More
Epidemic spreading and immunization with identical infectivityNov 09 2006Apr 04 2007In this paper, a susceptible-infected-susceptible (SIS) model with identical infectivity, where each node is assigned with the same capability of active contacts, $A$, at each time step, is presented. We found that on scale-free networks, the density ... More
On the chordality of polynomial sets in triangular decomposition in top-down styleFeb 06 2018In this paper the chordal graph structures of polynomial sets appearing in triangular decomposition in top-down style are studied when the input polynomial set to decompose has a chordal associated graph. In particular, we prove that the associated graph ... More
Composite Octet Searches with Jet SubstructureJul 18 2011Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new ... More
A Light Dilaton in Walking Gauge TheoriesJun 22 2010Dec 24 2010We analyze the existence of a dilaton in gauge theories with approximate infrared conformal symmetry. To the extent that these theories are governed in the infrared by an approximate fixed point (walking), the explicit breaking of the conformal symmetry ... More
Topological PionsMar 15 2010Dec 24 2010We study the collider signatures of new pions, composite particles which emerge from a TeV-scale, confining gauge theory with vector-like matter. Similar to the neutral pion in QCD, these new pions mainly decay into a pair of standard model (SM) gauge ... More
Coloron-assisted Leptoquarks at the LHCJul 16 2014Recent searches for a first-generation leptoquark by the CMS collaboration have shown around 2.5 sigma deviations from Standard Model predictions in both the eejj and e nu jj channels. Furthermore, the eejj invariant mass distribution has another 2.8 ... More
Earthquake tendency of the Himalayan seismic beltAug 24 2017Jan 05 2018The theory about the brittle failures of multiple locked patches in a seismogenic fault system developed by us since 2010 is introduced in the present study. It is stated by the theory that the progressive failures of locked patch result in the occurrence ... More
Three Twin Neutrinos: Evidence from LSND and MiniBooNEDec 16 2015We construct a neutrino model of three twin neutrinos in light of the neutrino appearance excesses at LSND and MiniBooNE. The model, which includes a twin parity, naturally predicts identical lepton Yukawa structures in the Standard Model and the twin ... More
End-to-End Refinement Guided by Pre-trained Prototypical ClassifierMay 07 2018Dec 11 2018Many real-world tasks involve identifying patterns from data satisfying background or prior knowledge. In domains like materials discovery, due to the flaws and biases in raw experimental data, the identification of X-ray diffraction patterns (XRD) often ... More
Automatic Dataset AugmentationAug 28 2017Apr 16 2018Large scale image dataset and deep convolutional neural network (DCNN) are two primary driving forces for the rapid progress made in generic object recognition tasks in recent years. While lots of network architectures have been continuously designed ... More
Detecting Axion Stars with Radio TelescopesSep 29 2017When axion stars fly through an astrophysical magnetic background, the axion-to-photon conversion may generate a large electromagnetic radiation power. After including the interference effects of the spacially-extended axion-star source and the macroscopic ... More
Fermion Portal Dark MatterAug 02 2013Jun 23 2014We study a class of simplified dark matter models in which one dark matter particle couples with a mediator and a Standard Model fermion. In such models, collider and direct detection searches probe complimentary regions of parameter space. For Majorana ... More
Large N (=3) Neutrinos and Random Matrix TheoryOct 08 2012Nov 06 2012The large N limit has been successfully applied to QCD, leading to qualitatively correct results even for N=3. In this work, we propose to treat the number N=3 of Standard Model generations as a large number. Specifically, we apply this idea to the neutrino ... More
Dark Matter Jets at the LHCSep 27 2011We argue that dark matter particles which have strong interactions with the Standard Model particles are not excluded by current astrophysical constraints. These dark matter particles have unique signatures at colliders; instead of missing energy, the ... More
Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHCSep 26 2008Apr 12 2009We perform a model-independent study for top-antitop and top-top resonances in the dilepton channel at the Large Hadtron Collider. In this channel, we can solve the kinematic system to obtain the momenta of all particles including the two neutrinos, and ... More
Deep-Person: Learning Discriminative Deep Features for Person Re-IdentificationNov 29 2017Jul 24 2018Recently, many methods of person re-identification (Re-ID) rely on part-based feature representation to learn a discriminative pedestrian descriptor. However, the spatial context between these parts is ignored for the independent extractor to each separate ... More
Unsupervised Inductive Whole-Graph Embedding by Preserving Graph ProximityApr 01 2019We introduce a novel approach to graph-level representation learning, which is to embed an entire graph into a vector space where the embeddings of two graphs preserve their graph-graph proximity. Our approach, UGRAPHEMB, is a general framework that provides ... More
SuperbumpsMar 23 2016For a wide range of supersymmetric models, there is a chiral superfield whose scalar and pseudo-scalar have approximately degenerate masses and couplings to Standard Model particles. At colliders, they may show up as "superbumps": a pair of resonances ... More
The Scale of Dark QCDJun 19 2013Mar 26 2014Most of the mass of ordinary matter has its origin from quantum chromodynamics (QCD). A similar strong dynamics, dark QCD, could exist to explain the mass origin of dark matter. Using infrared fixed points of the two gauge couplings, we provide a dynamical ... More
Full-duplex in 5G Small Cell Access: SystemDesign and Performance AspectsMar 23 2019Recent achievement in self-interference cancellation algorithms enables potential application of full-duplex (FD) in 5G radio access systems. The exponential growth of data traffic in 5G can be supported by having more spectrum and higher spectral efficiency. ... More
Amplitude-modulation-based atom-mirror entanglement and mechanical squeezing in a hybrid optomechanical systemNov 15 2018We consider a hybrid optomechanical system which is composed of the atomic ensemble and a standard optomechanical cavity driven by the periodically modulated external laser field. We investigate the asymptotic behaviors of Heisenberg operator first moments ... More
Traffic scene recognition based on deep cnn and vlad spatial pyramidsJul 24 2017Traffic scene recognition is an important and challenging issue in Intelligent Transportation Systems (ITS). Recently, Convolutional Neural Network (CNN) models have achieved great success in many applications, including scene classification. The remarkable ... More
Relations between Average Distance, Heterogeneity and Network SynchronizabilityOct 13 2005Apr 21 2006By using the random interchanging algorithm, we investigate the relations between average distance, standard deviation of degree distribution and synchronizability of complex networks. We find that both increasing the average distance and magnifying the ... More
Learning High-level Image Representation for Image Retrieval via Multi-Task DNN using Clickthrough DataDec 17 2013Dec 21 2013Image retrieval refers to finding relevant images from an image database for a query, which is considered difficult for the gap between low-level representation of images and high-level representation of queries. Recently further developed Deep Neural ... More
UAV Aided Aerial-Ground IoT for Air Quality Sensing in Smart City: Architecture, Technologies and ImplementationSep 11 2018As air pollution is becoming the largest environmental health risk, the monitoring of air quality has drawn much attention in both theoretical studies and practical implementations. In this article, we present a real-time, fine-grained and power-efficient ... More
SWALP : Stochastic Weight Averaging in Low-Precision TrainingApr 26 2019May 20 2019Low precision operations can provide scalability, memory savings, portability, and energy efficiency. This paper proposes SWALP, an approach to low precision training that averages low-precision SGD iterates with a modified learning rate schedule. SWALP ... More
Particle acceleration and synchrotron self-Compton emission in blazar jets I : an application to the quiescent emissionFeb 21 2019There are still some important unanswered questions about the detailed particle acceleration and escape occurring during the quiescent epoches. As a result, the particle distribution that is adopted in the blazar quiescent spectral model have numerous ... More
Action Recognition for Depth Video using Multi-view Dynamic ImagesJun 29 2018Dec 27 2018Dynamic imaging is a recently proposed action description paradigm for simultaneously capturing motion and temporal evolution information, particularly in the context of deep convolutional neural networks (CNNs). Compared with optical flow for motion ... More
Collider Tests of the Renormalizable Coloron ModelFeb 08 2018The coloron, a massive version of the gluon present in gauge extensions of QCD, has been searched for at the LHC as a dijet or top quark pair resonance. We point out that in the Renormalizable Coloron Model (ReCoM) with a minimal field content to break ... More
Dips at CollidersJul 23 2014Aug 14 2014We categorize new physics signatures that manifest themselves as a "dip" structure at colliders. One potential way to realize a dip is to require interactions to be zero when all particles are mass on-shell, but not if one or more are mass off-shell. ... More
Strongly enhanced critical current density in Fe-sheathed MgB2 tapes by stearic acid and stearate dopingJan 16 2007Feb 14 2007Fe-sheathed MgB2 tapes with cheap stearic acid, Mg stearate and Zn stearate doping were prepared through the in situ powder-in-tube method. It is found that Jc, Hirr, and Hc2 were significantly enhanced by doping. Compared to the pure tapes, Jc for all ... More
A Holographic Model of Heavy-light MesonsJun 12 2013We construct a holographic model of heavy-light mesons by extending the AdS/QCD to incorporate the behavior of the heavy quark limit. In that limit, the QCD dynamics is governed by the light quark and the heavy quark simply plays the role of a static ... More
Weakly Interacting Stable PionsApr 30 2010Dec 24 2010An unbroken discrete symmetry, analogous to G-parity in QCD, exists in standard model extensions with vector-like coupling of electroweak SU(2) to "hidden sector" fermions that are confined by a strong gauge force. For an irreducible SU(2) representation ... More
Panoramic Annular Localizer: Tackling the Variation Challenges of Outdoor Localization Using Panoramic Annular Images and Active Deep DescriptorsMay 14 2019Visual localization is an attractive problem that estimates the camera localization from database images based on the query image. It is a crucial task for various applications, such as autonomous vehicles, assistive navigation and augmented reality. ... More
Epidemic spreading on heterogeneous networks with identical infectivitySep 17 2006In this paper, we propose a modified susceptible-infected-recovered (SIR) model, in which each node is assigned with an identical capability of active contacts, $A$, at each time step. In contrast to the previous studies, we find that on scale-free networks, ... More
Identifying Dark Matter Event Topologies at the LHCDec 08 2010Assuming dark matter particles can be pair-produced at the LHC from cascade decays of heavy particles, we investigate strategies to identify the event topologies based on the kinematic information of final state visible particles. This should be the first ... More
Collider Tests of the Renormalizable Coloron ModelFeb 08 2018Sep 07 2018The coloron, a massive version of the gluon present in gauge extensions of QCD, has been searched for at the LHC as a dijet or top quark pair resonance. We point out that in the Renormalizable Coloron Model (ReCoM) with a minimal field content to break ... More
$η_{Q}$ meson photoproduction in ultrarelativistic heavy ion collisionsAug 20 2017Jan 03 2018The transverse momentum distributions for inclusive $\eta_{c,b}$ meson described by gluon-gluon interactions from photoproduction processes in relativistic heavy ion collisions are calculated. We considered the color singlet (CS) and color octet (CO) ... More
ICDAR2017 Competition on Reading Chinese Text in the Wild (RCTW-17)Aug 31 2017Sep 26 2018Chinese is the most widely used language in the world. Algorithms that read Chinese text in natural images facilitate applications of various kinds. Despite the large potential value, datasets and competitions in the past primarily focus on English, which ... More
Natural Milli-Charged InflationMay 26 2014We construct a natural inflation model with the inflaton as a linear combination of the fifth components of Abelian gauge fields in a five-dimensional theory. A seesaw mechanism is introduced to provide a natural milli-charge for matter fields under one ... More
Six Flavor Quark MatterApr 26 2018Oct 12 2018Macroscopic nuggets of quark matter were proposed several decades ago as a candidate for dark matter. The formation of these objects in the early universe requires the QCD phase transition to be first order - a requirement that is not satisfied in the ... More
Minimal $SU(3)\times SU(3)$ symmetry breaking patternsOct 04 2017We study the vacua of an $SU(3)\times SU(3)$-symmetric model with a bifundamental scalar. Structures of this type appear in various gauge theories such as the Renormalizable Coloron Model, which is an extension of QCD, or the Trinification extension of ... More
Heavy octets and Tevatron signals with three or four b jetsDec 28 2010Hypothetical color-octet particles of spin 0, pair-produced at hadron colliders through their QCD coupling, may lead to final states involving three or four b jets. We analyze kinematic distributions of the 3b final state that differentiate the scalar ... More
CP Violating Contribution to Delta Gamma in the B_s System from Mixing with a Hidden PseudoscalarJul 04 2010Recent evidence for a CP violating asymmetry in the semileptonic decays of B_s mesons cannot be accommodated within the Standard Model. Such an asymmetry can be explained by new physics contributions to Delta B=2 components of either the mass matrix or ... More
Resonant Dark MatterSep 16 2009Nov 11 2009It is usually assumed that dark matter direct detection is sensitive to a large fraction of the dark matter (DM) velocity distribution. We propose an alternative form of dark matter-nucleus scattering which only probes a narrow range of DM velocities ... More
A Search for Exoplanets around Northern Circumpolar Stars. IV. Six Planet Candidates to the K Giants, HD 44385, HD 97619, HD 106574, HD 118904, HD 164428, and HD 202432Aug 03 2018We report the discovery of long-period radial velocity (RV) variations in six intermediate-mass K-giant stars using precise RV measurements. These discoveries are part of the Search for Exoplanets around Northern Circumpolar Stars (SENS) survey being ... More
Extremes of $L^p$-norm of Vector-valued Gaussian processes with TrendJun 26 2017Jun 01 2018Let $\boldsymbol{X}(t)=(X_1(t),\ldots,X_d(t))$ be a Gaussian vector process and $g(t)$ be a continuous function. The asymptotics of distribution of $\left\|\boldsymbol{X}(t)\right\|_p$, the $L^p$ norm for Gaussian finite-dimensional vector, have been ... More
The Grone-Merris ConjectureNov 11 2009Nov 30 2010In spectral graph theory, Grone and Merris conjecture that the spectrum of the Laplacian matrix of a finite graph is majorized by the conjugate degree sequence of this graph. We give a complete proof for this conjecture.
Extremes of $α(t)$-Locally stationary Gaussian processes with non-constant variancesJun 22 2016Aug 21 2016With motivation from K. D\c{e}bicki and P. Kisowski (2007), in this paper we derive the exact tail asymptotics of $\alpha(t)$-locally stationary Gaussian processes with non-constant variance functions. We show that some certain variance functions lead ... More
Extremes of multifractional Brownian motionNov 15 2017Mar 30 2019Let $B_{H}(t), t\geq [0,T], T\in(0,\infty)$ be the standard Multifractional Brownian Motion(mBm), in this contribution we are concerned with the exact asymptotics of \begin{eqnarray*} \mathbb{P}\left\{\sup_{t\in[0,T]}B_{H}(t)>u\right\} \end{eqnarray*} ... More
Estimation of Change-point ModelsMay 01 2018May 08 2018We consider the testing and estimation of change-points, locations where the distribution abruptly changes, in a sequence of observations. Motivated by this problem, in this contribution we first investigate the extremes of Gaussian fields with trend ... More
Parisian ruin of Brownian motion risk model over an infinite-time horizonFeb 20 2017Let $B(t), t\in \mathbb{R}$ be a standard Brownian motion. In this paper, we derive the exact asymptotics of the probability of Parisian ruin on infinite time horizon for the following risk process \begin{align}\label{Rudef} R_u^{\delta}(t)=e^{\delta ... More
Particle Motion in Generalized Dirac's Monopoles of dimension 2k+1Nov 16 2015Nov 17 2015By using Meng's idea in his generalization of the classical MICZ-Kepler problem, we obtained the equations of motion of a charged particle in the field of generalized Dirac monopole in odd dimensional Euclidean spaces. The main result is that for every ... More
$K_L$ - $K_S$ mass difference computed with a 171 MeV pion massNov 12 2014In this work, we used a $32^3 \times 64 \times 32$, 2+1 flavor domain wall lattice with Iwasaki+DSDR gauge action. The pion mass is 171 MeV and the kaon mass is 492 MeV. We implement the Glashow-Iliopoulos-Maiani (GIM) cancellation using charm quark masses ... More
Estimation of Parameters in Avian Movement ModelsOct 04 2018Oct 15 2018The knowledge of the movement of animals is important and necessary for ecologists to do further analysis such as exploring the animal migration route. A novel method which is based on the state space modeling has been proposed to track the bird, where ... More
Double constructions of Frobenius algebras, Connes cocycles and their dualityAug 25 2008Aug 15 2010We construct an associative algebra with a decomposition into the direct sum of the underlying vector spaces of another associative algebra and its dual space such that both of them are subalgebras and the natural symmetric bilinear form is invariant ... More
Gelfand-Kirillov dimensions of the $Z^2$-graded oscillator representations of sl(n)Jan 20 2015Nov 18 2015We find an exact formula of Gelfand-Kirillov dimensions for the infinite-dimensional explicit irreducible sl(n, F)-modules that appeared in the Z^2-graded oscillator generalizations of the classical theorem on harmonic polynomials established by Luo and ... More
A Uniqueness Property for the Quantization of Teichmüller SpacesSep 28 2005Chekhov, Fock and Kashaev introduced a quantization of the Teichm\"{u}ller space $\mathcal{T}^q(S)$ of a punctured surface $S$, and an exponential version of this construction was developed by Bonahon and Liu. The construction of the quantum Teichm\"{u}ller ... More
Triplet-Center Loss for Multi-View 3D Object RetrievalMar 16 2018Most existing 3D object recognition algorithms focus on leveraging the strong discriminative power of deep learning models with softmax loss for the classification of 3D data, while learning discriminative features with deep metric learning for 3D object ... More
Dilaton-assisted Dark MatterSep 08 2009Jan 07 2010A dilaton could be the dominant messenger between Standard Model fields and dark matter. The measured dark matter relic abundance relates the dark matter mass and spin to the conformal breaking scale. The dark matter-nucleon spin-independent cross section ... More
Quark Mass Ratios and Mixing Angles from SU(3) Family Gauge SymmetryMar 14 2006Mar 24 2006We explore a framework for the computation of quark mass ratios and CKM mixing angles based on an SU(3) family gauge symmetry. The four ratios md/mb, ms/mb, mu/mt, and mc/mt can be fit at one-loop in the family gauge interaction. The same is true of the ... More
Geometric Compatibility of IceCube TeV-PeV Neutrino Excess and its Galactic Dark Matter OriginNov 22 2013We perform a geometric analysis for the sky map of the IceCube TeV-PeV neutrino excess and test its compatibility with the sky map of decaying dark matter signals in our galaxy. Using both Kolmogorov-Smirnov and the likelihood-ratio tests, we have found ... More
How Much Frequency Can Be Reused in 5G Cellular Networks---A Matrix Graph ModelJan 19 2014Apr 11 2014The 5th Generation cellular network may have the key feature of smaller cell size and denser resource employment, resulted from diminishing resource and increasing communication demands. However, small cell may result in high interference between cells. ... More
Supersymmetric Resonant Dark Matter: a Thermal Model for the AMS-02 Positron ExcessJun 29 2017We construct a thermal dark matter model with annihilation mediated by a resonance to explain the positron excess observed by PAMELA, Fermi-LAT and AMS-02, while satisfying constraints from cosmic microwave background (CMB) measurements. The challenging ... More