Results for "Jong-Shi Pang"

total 6071took 0.25s
Joint Sensing and Power Allocation in Nonconvex Cognitive Radio Games: Nash Equilibria and Distributed AlgorithmsDec 27 2012In this paper, we propose a novel class of Nash problems for Cognitive Radio (CR) networks, modeled as Gaussian frequency-selective interference channels, wherein each secondary user (SU) competes against the others to maximize his own opportunistic throughput ... More
Joint Sensing and Power Allocation in Nonconvex Cognitive Radio Games: Quasi-Nash EquilibriaDec 26 2012In this paper, we propose a novel class of Nash problems for Cognitive Radio (CR) networks composed of multiple primary users (PUs) and secondary users (SUs) wherein each SU (player) competes against the others to maximize his own opportunistic throughput ... More
A New Distributed DC-Programming Method and its ApplicationsAug 15 2013Sep 20 2013We propose a novel decomposition framework for the distributed optimization of Difference Convex (DC)-type nonseparable sum-utility functions subject to coupling convex constraints. A major contribution of the paper is to develop for the first time a ... More
Distributed Power Allocation with Rate Constraints in Gaussian Parallel Interference ChannelsFeb 28 2007Jan 18 2008This paper considers the minimization of transmit power in Gaussian parallel interference channels, subject to a rate constraint for each user. To derive decentralized solutions that do not require any cooperation among the users, we formulate this power ... More
Solving Linear Programs with Complementarity Constraints using Branch-and-CutFeb 08 2018A linear program with linear complementarity constraints (LPCC) requires the minimization of a linear objective over a set of linear constraints together with additional linear complementarity constraints. This class has emerged as a modeling paradigm ... More
A Unified Algorithmic Framework for Block-Structured Optimization Involving Big DataNov 09 2015This article presents a powerful algorithmic framework for big data optimization, called the Block Successive Upper bound Minimization (BSUM). The BSUM includes as special cases many well-known methods for analyzing massive data sets, such as the Block ... More
Parallel Successive Convex Approximation for Nonsmooth Nonconvex OptimizationJun 13 2014Oct 31 2014Consider the problem of minimizing the sum of a smooth (possibly non-convex) and a convex (possibly nonsmooth) function involving a large number of variables. A popular approach to solve this problem is the block coordinate descent (BCD) method whereby ... More
Stability of Two-Dimensional Iron-Carbides Suspended across Graphene Pores: First-principles Particle Swarm OptimizationJul 09 2015Sep 06 2015Inspired by recent experimental realizations of two-dimensional (2D) metals and alloys, we theoretically investigate the stability and electronic properties of monolayer (ML) Fe-C compounds and pure Fe. According to our and others theoretical results, ... More
On the Global Minimization of the Value-at-RiskJan 07 2004In this paper, we consider the nonconvex minimization problem of the value-at-risk (VaR) that arises from financial risk analysis. By considering this problem as a special linear program with linear complementarity constraints (a bilevel linear program ... More
Fullerene antiferromagnetic reconstructed spinterface subsurface layer dominates multi-orbitals spin-splitting and large magnetic moment in C60Oct 26 2016The interfaces between organic molecules and metal surfaces with layered antiferromagnetic order have gained increasing interests in the field of antiferromagnetic spintronics. The C60 layered AFM spinterfaces have been studied for C60 bonded only to ... More
Large Scale Purchase Prediction with Historical User Actions on B2C Online Retail PlatformAug 27 2014Mar 04 2015This paper describes the solution of Bazinga Team for Tmall Recommendation Prize 2014. With real-world user action data provided by Tmall, one of the largest B2C online retail platforms in China, this competition requires to predict future user purchases ... More
Manipulating Magnetism at Organic/Ferromagnetic Interfaces by Fullerene-Induced Surface ReconstructionJul 30 2015Fullerenes have several advantages as potential materials for organic spintronics. Through a theoretical first-principles study, we report that fullerene C$_{60}$ adsorption can induce a magnetic reconstruction in a Ni(111) surface and expose the merits ... More
Computing B-Stationary Points of Nonsmooth DC ProgramsNov 05 2015Motivated by a class of applied problems arising from physical layer based security in a digital communication system, in particular, by a secrecy sum-rate maximization problem, this paper studies a nonsmooth, difference-of-convex (dc) minimization problem. ... More
Synthesis and spectroscopic characterization of completely isotactic polyacrylonitrileOct 09 2012Jan 15 2013Completely isotactic polyacrylonitrile (i-PAN) has been synthesized successfully by an improved urea inclusion polymerization. The tacticity of prepared samples were confirmed by 13C nuclear magnetic resonance (NMR), Fourier transform infrared (FT-IR) ... More
The Formation and Characteristics of Acrylonitrile/Urea Inclusion CompoundOct 09 2012Mar 07 2013The formation process and composition of the acrylonitrile/urea inclusion compounds (AN/UIC) with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). It is suggested that ... More
Dipolar matter-wave solitons in two-dimensional anisotropic discrete latticesApr 20 2016May 05 2016We numerically demonstrate two-dimensional (2D) matter-wave solitons in the disk-shaped dipolar Bose-Einstein condensates (BECs) trapped in strongly anisotropic optical lattices (OLs) in a disk's plane. The considered OLs are square lattices which can ... More
Real and Complex Monotone Communication GamesDec 26 2012Dec 14 2013Noncooperative game-theoretic tools have been increasingly used to study many important resource allocation problems in communications, networking, smart grids, and portfolio optimization. In this paper, we consider a general class of convex Nash Equilibrium ... More
Large linear magnetoresistance in Dirac semi-metal Cd3As2 with Fermi surfaces close to the Dirac pointsMay 26 2014We have investigated the magnetoresistive behavior of Dirac semi-metal Cd3As2 down to low temperatures and in high magnetic fields. A positive and linear magnetoresistance (LMR) as large as 3100% is observed in a magnetic field of 14 T, on high-quality ... More
One-Loop Divergences in 6D Conformal GravityAug 04 2012Oct 17 2012Using Exact Renormalization Group Equation approach and background field method, we investigate the one-loop problem in a six-dimensional conformal gravity theory whose Lagrangian takes the same form as holographic Weyl anomaly of multiple coincident ... More
Brief Note on AMD Conserved Quantities in Quadratic Curvature TheoriesJan 22 2011Apr 12 2011Motivated by the recent work on critical gravity theories in dimensions D>3, we reexamine the results in [arXiv:hep-th/0501044], where the conformal mass definition of Ashtekar, Magnon and Das (AMD) for asymptotically AdS space-times was generalized to ... More
Thermoelectric properties of polycrystalline palladium sulfideFeb 08 2018A suite measurements of the electrical, thermal, and vibrational properties are conducted on palladium sulfide (PdS) in order to investigate its thermoelectric performance. The tetragonal structure with the space group $P$42/$m$ for PdS is determined ... More
Decomposition by Partial Linearization: Parallel Optimization of Multi-Agent SystemsFeb 04 2013Sep 20 2013We propose a novel decomposition framework for the distributed optimization of general nonconvex sum-utility functions arising naturally in the system design of wireless multiuser interfering systems. Our main contributions are: i) the development of ... More
Infinite Horizon Average Optimality of the N-network Queueing Model in the Halfin-Whitt RegimeFeb 10 2016We study the infinite horizon optimal control problem for N-network queueing systems, which consist of two customer classes and two server pools, under average (ergodic) criteria in the Halfin-Whitt regime. We consider three control objectives: 1) minimizing ... More
Equivalence of Fluid Models for $G_t/GI/N+GI$ QueuesFeb 02 2015Four different fluid model formulations have been recently developed for $G_t/GI/N+GI$ queues, including a two-parameter fluid model in Whitt (2006) by tracking elapsed service and patience times of each customer, a measure-valued fluid model in Kang ... More
Improved analysis of algorithms based on supporting halfspaces and quadratic programming for the convex intersection and feasibility problemsJun 16 2014This paper improves the algorithms based on supporting halfspaces and quadratic programming for convex set intersection problems in our earlier paper in several directions. First, we give conditions so that much smaller quadratic programs (QPs) and approximate ... More
Ergodicity and fluctuations of a fluid particle driven by diffusions with jumpsFeb 16 2015In this paper, we study the long-time behavior of a fluid particle immersed in a turbulent fluid driven by a diffusion with jumps, that is, a Feller process associated with a non-local operator. We derive the law of large numbers and central limit theorem ... More
Endoscopic classification of representations of quasi-split unitary groupsJun 05 2012Jun 22 2013In this paper we establish the endoscopic classification of tempered representations of quasi-split unitary groups over local fields, and the endoscopic classification of the discrete automorphic spectrum of quasi-split unitary groups over global number ... More
Supersymmetric Completion of Gauss-Bonnet Combination in Five DimensionsJan 28 2013Jul 08 2013Based on superconformal tensor calculus in five dimensions, we construct the supersymmetric completion of Gauss-Bonnet combination. We study the vacuum solutions with AdS_2 x S^3 and AdS_3 x S^2 structures. We also analyze the spectrum around a maximally ... More
Towards the Capacity Region of Multiplicative Linear Operator Broadcast ChannelsDec 28 2010May 14 2011Recent research indicates that packet transmission employing random linear network coding can be regarded as transmitting subspaces over a linear operator channel (LOC). In this paper we propose the framework of linear operator broadcast channels (LOBCs) ... More
On Probabilistic Alternating SimulationsMar 03 2010This paper presents simulation-based relations for probabilistic game structures. The first relation is called probabilistic alternating simulation, and the second called probabilistic alternating forward simulation, following the naming convention of ... More
DeepCity: A Feature Learning Framework for Mining Location Check-insOct 12 2016Online social networks being extended to geographical space has resulted in large amount of user check-in data. Understanding check-ins can help to build appealing applications, such as location recommendation. In this paper, we propose DeepCity, a feature ... More
Accelerating the alternating projection algorithm for the case of affine subspaces using supporting hyperplanesJun 16 2014Jul 16 2014The von Neumann-Halperin method of alternating projections converges strongly to the projection of a given point onto the intersection of finitely many closed affine subspaces. We propose acceleration schemes making use of two ideas: Firstly, each projection ... More
Finitely convergent algorithm for nonconvex inequality problemsMay 28 2014Jul 31 2014We extend Fukushima's result on the finite convergence of an algorithm for the global convex feasibility problem to the local nonconvex case.
Asymptotic Inference for AR(1) Penal DataNov 14 2016A general asymptotic theory is given for the panel data AR(1) model with time series independent in different cross sections. The theory covers the cases of stationary process, nearly non-stationary process, unit root process, mildly integrated, mildly ... More
A Trouble with Hořava-Lifshitz GravityMay 17 2009Aug 07 2009We study the structure of the phase space in Ho\v{r}ava-Lifshitz theory. With the constraints derived from the action, the phase space is described by five fields, thus there is a lack of canonical structure. The Poisson brackets of the Hamiltonian density ... More
The supporting halfspace- quadratic programming strategy for the dual of the best approximation problemJan 06 2016We consider the best approximation problem (BAP) of projecting a point onto the intersection of a number of convex sets. It is known that Dykstra's algorithm is alternating minimization on the dual problem. We extend Dykstra's algorithm so that it can ... More
A weak form of beyond endoscopic decomposition for the stable trace formula of odd orthogonal groupsAug 11 2016Aug 17 2016We show that the cuspidal component of the stable trace formula of a special odd orthogonal group over a number field, satisfies a weak form of beyond endoscopic decomposition. We also study the $r$-stable trace formula, when $r$ is the standard or the ... More
Neural network design for J function approximation in dynamic programmingJun 03 1998This paper shows that a new type of artificial neural network (ANN) -- the Simultaneous Recurrent Network (SRN) -- can, if properly trained, solve a difficult function approximation problem which conventional ANNs -- either feedforward or Hebbian -- cannot. ... More
Noise-Robust ASR for the third 'CHiME' Challenge Exploiting Time-Frequency Masking based Multi-Channel Speech Enhancement and Recurrent Neural NetworkSep 24 2015In this paper, the Lingban entry to the third 'CHiME' speech separation and recognition challenge is presented. A time-frequency masking based speech enhancement front-end is proposed to suppress the environmental noise utilizing multi-channel coherence ... More
Condensate-profile asymmetry of a boson mixture in a disk-shaped harmonic trapMay 19 2004A mixture of two types of hard-sphere bosons in a disk-shaped harmonic trap is studied through path-integral quantum Monte Carlo simulation at low temperature. We find that the system can undergo a phase transition to break the spatial symmetry of the ... More
An Upper Bound on Broadcast Subspace CodesOct 18 2011Linear operator broadcast channel (LOBC) models the scenario of multi-rate packet broadcasting over a network, when random network coding is applied. This paper presents the framework of algebraic coding for LOBCs and provides a Hamming-like upper bound ... More
On Hybrid (Topologically) Massive Supergravity in Three DimensionsNov 29 2010Apr 12 2011A class of hybrid (topologically) massive off-shell supergravities coupled to an on-shell matter scalar multiplet was recently constructed. The auxiliary field in the off-shell multiplet is dynamical for generic values of the eight parameters. We find ... More
Space-Time Topology in Teleportation-Based Quantum ComputationSep 04 2013Oct 10 2013We study the construction of both universal quantum computation and multi-partite entangled states in the topological diagrammatical approach to quantum teleportation. Our results show that the teleportation-based quantum circuit model admits a space-time ... More
A New Access Control Scheme for Facebook-style Social NetworksApr 09 2013Apr 01 2016The popularity of online social networks (OSNs) makes the protection of users' private information an important but scientifically challenging problem. In the literature, relationship-based access control schemes have been proposed to address this problem. ... More
An Algorithm for Probabilistic Alternating SimulationJun 10 2011Jun 08 2012In probabilistic game structures, probabilistic alternating simulation (PA-simulation) relations preserve formulas defined in probabilistic alternating-time temporal logic with respect to the behaviour of a subset of players. We propose a partition based ... More
How to Work with Honest but Curious Judges? (Preliminary Report)Oct 21 2009The three-judges protocol, recently advocated by Mclver and Morgan as an example of stepwise refinement of security protocols, studies how to securely compute the majority function to reach a final verdict without revealing each individual judge's decision. ... More
A Sentimental Education: Sentiment Analysis Using Subjectivity Summarization Based on Minimum CutsSep 29 2004Sentiment analysis seeks to identify the viewpoint(s) underlying a text span; an example application is classifying a movie review as "thumbs up" or "thumbs down". To determine this sentiment polarity, we propose a novel machine-learning method that applies ... More
Can Density-matrix renormalization group be Applied to two dimensional systems?Mar 17 1994In order to extend the density-matrix renormalization-group (DMRG) method to two-dimensional systems, we formulate two alternative methods to prepare the initial states. We find that the number of states that is needed for accurate energy calculations ... More
Holographic de Sitter UniverseApr 30 2011May 13 2011We propose to embed de Sitter space into five dimensional anti-de Sitter space to compute some physical quantities of interest, using the AdS/CFT correspondence. The static de Sitter can be considered as the conformal structure of the boundary of the ... More
Level set methods for finding saddle points of general Morse indexJan 06 2010For a real valued function, a point is critical if its derivatives are zero, and a critical point is a saddle point if it is not a local extrema. In this paper, we study algorithms to find saddle points of general Morse index. Our approach is motivated ... More
Set intersection problems: Integrating projection and quadratic programming algorithmsJun 29 2013Feb 15 2015Abstract. The Set Intersection Problem (SIP) is the problem of finding a point in the intersection of convex sets. This problem is typically solved by the method of alternating projections. To accelerate the convergence, the idea of using Quadratic Programming ... More
First order constrained optimization algorithms with feasibility updatesJun 27 2015We propose first order algorithms for convex optimization problems where the feasible set is described by a large number of convex inequalities that is to be explored by subgradient projections. The first algorithm is an adaptation of a subgradient algorithm, ... More
Uniqueness of viscosity solutions of a geometric fully nonlinear parabolic equationMay 24 2009We observe that the comparison result of Barles-Biton-Ley for viscosity solutions of a class of nonlinear parabolic equations can be applied to a geometric fully nonlinear parabolic equation which arises from the graphic solutions for the Lagrangian mean ... More
Location Prediction: Communities Speak Louder than FriendsAug 06 2014Apr 01 2016Humans are social animals, they interact with different communities of friends to conduct different activities. The literature shows that human mobility is constrained by their social relations. In this paper, we investigate the social impact of a person's ... More
Graph Laplacian Regularization for Inverse Imaging: Analysis in the Continuous DomainApr 27 2016Inverse imaging problems are inherently under-determined, and hence it is important to employ appropriate image priors for regularization. One recent popular prior---the graph Laplacian regularizer---assumes that the target pixel patch is smooth with ... More
$R^n$ Extension of Starobinsky Model in Old Minimal SupergravityFeb 21 2014Oct 08 2014We provide a succinct way to construct the supersymmetric completion of $R^n$ $(n\ge3)$ in components using superconformal formulation of old minimal supergravity. As a consequence, we obtain the polynomial $f(R)$ supergravity extending the supersymmetric ... More
All Off-Shell R^2 Invariants in Five Dimensional N=2 SupergravityJun 06 2013Aug 14 2013We construct supersymmetric completions of various curvature squared terms in five dimensional supergravity with eight supercharges. Adopting the dilaton Weyl multiplet, we obtain the minimal off-shell supersymmetric Ricci scalar squared as well as all ... More
Seven-Dimensional Gravity with Topological TermsDec 30 2009Apr 16 2010We construct new seven-dimensional gravity by adding two topological terms to the Einstein-Hilbert action. For certain choice of the coupling constants, these terms may be related to the R^4 correction to the 3-form field equation of eleven-dimensional ... More
Hopf Algebras and Markov ChainsDec 28 2014Dec 31 2014This thesis introduces a way to build Markov chains out of Hopf algebras. The transition matrix of a "Hopf-power Markov chain" is (the transpose of) the matrix of the coproduct-then-product operator on a combinatorial Hopf algebra with respect to a suitable ... More
First order dependence on uncertainty sets in robust optimizationJun 09 2010We show that a first order problem can approximate solutions of a robust optimization problem when the uncertainty set is scaled, and explore further properties of this first order problem.
Loading N-Dimensional Vector into Quantum Registers from Classical Memory with O(logN) StepsDec 08 2006Jun 04 2007Vector is the general format of input data of most algorithms. Designing unitary operation to load all information of vector into quantum registers of quantum CPU from classical memory is called quantum loading scheme (QLS). QLS assembles classical memory ... More
Set intersection problems: Supporting hyperplanes and quadratic programmingDec 31 2012We study how the supporting hyperplanes produced by the projection process can complement the method of alternating projections and its variants for the convex set intersection problem. For the problem of finding the closest point in the intersection ... More
On (conditional) positive semidefiniteness in a matrix-valued contextFeb 01 2016Jul 25 2016In a nutshell, we intend to extend Schoenberg's classical theorem connecting conditionally positive semidefinite functions $F\colon \mathbb{R}^n \to \mathbb{C}$, $n \in \mathbb{N}$, and their positive semidefinite exponentials $\exp(tF)$, $t > 0$, to ... More
On holographic entanglement entropy of non-local field theoriesApr 22 2014Jun 05 2014We study holographic entanglement entropy of non-local field theories both at extremality and finite temperature. The gravity duals, constructed in arXiv:1208.3469 [hep-th], are characterized by a parameter $w$. Both the zero temperature backgrounds and ... More
Probing holographic semi-local quantum liquids with D-branesJun 17 2013Aug 10 2013We study dynamics of probe D-branes in $(d+2)$-dimensional background with general semi-locality. The background is characterized by a parameter $\eta$ and is conformal to $AdS_{2}\times\mathbb{R}^{d}$. We discuss thermodynamics of the probe D-branes ... More
Competition between phase coherence and correlation in a mixture of Bose-Einstein condensatesAug 29 2003Two-species hard-core bosons trapped in a three-dimensional isotropic harmonic potential are studied with the path-integral quantum Monte Carlo simulation. The double condensates show two distinct structures depending on how the external potentials are ... More
Nonconvex set intersection problems: From projection methods to the Newton method for super-regular setsJun 27 2015The problem of finding a point in the intersection of closed sets can be solved by the method of alternating projections and its variants. It was shown in earlier papers that for convex sets, the strategy of using quadratic programming (QP) to project ... More
Ferromagnetism in the Infinite-U Hubbard ModelApr 04 1994Apr 05 1994We have studied the stability of the ferromagnetic state in the infinite-U Hubbard model on a square lattice by approximate diagonalization of finite lattices using the density matrix renormalization group technique. By studying lattices with up to 5X20 ... More
A No-go Theorem Prohibiting Inflation in the Entropic Force ScenarioApr 06 2010Jul 08 2010We show that to accommodate inflation in the entropic force scenario of Verlinde, it is necessary to introduce a negative temperature on a holographic screen, this will introduce several puzzles such as energy non-conservation. If one tries to modify ... More
Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 MonolayersJul 09 2014A new degree of freedom, the valley pseudospin, emerges in atomically thin two-dimensional transition metal dichalcogenides (MX2) and has attracted great scientific interest. The capability to manipulate the valley pseudospin, in analogy to the control ... More
Integrated Circuits Based on Bilayer MoS2 TransistorsAug 06 2012Two-dimensional (2D) materials, such as molybdenum disulfide (MoS2), have been shown to exhibit excellent electrical and optical properties. The semiconducting nature of MoS2 allows it to overcome the shortcomings of zero-bandgap graphene, while still ... More
Penetration depth measurements of K2Cr3As3 and Rb2Cr3As3Aug 19 2015The newly discovered superconductors A2Cr3As3 (A = K, Rb, Cs), with a quasi-one-dimensional crystal structure have attracted considerable interest. The crystal structure consists of double-walled tubes of [Cr3As3]^(2-) that extend along the c-axis. Previously ... More
An Augmented Smoothing Method of L1 -norm Minimization and Its Implementation by Neural Network ModelJul 09 2012In this paper we propose an augmented smoothing function for nonlinear L1 -norm minimization problem and consider a global stability of a gradient-based neural network model to minimize the smoothing function. The numerical simulations show that our smoothing ... More
Optimization Method for Interval Portfolio Selection Based on Satisfaction Index of Interval inequality RelationJul 09 2012In this paper we consider an interval portfolio selection problem with uncertain returns and introduce an inclusive concept of satisfaction index for interval inequality relation. Based on the satisfaction index, we propose an approach to reduce the interval ... More
Horizontally transferred gene clusters in E. coli match size expectations from uber-operonsFeb 23 2016Feb 24 2016Horizontal gene transfer (HGT) can transfer beneficial DNA segment between bacteria, conferring new phenotypes and improving the fitness of the recipient. Assuming the conservation of phenotype-genotype associations, one expects that when a useful phenotype ... More
Quantum metrology with time-dependent HamiltoniansJun 07 2016Quantum metrology has been intensively studied for a wide range of systems with static Hamiltonians. For systems with time-varying Hamiltonians, however, significant difficulty emerges, due to no explicit solution is available for the dynamics in general. ... More
Influence of bulk inversion asymmetry on the magneto-optical spectrum of a HgTe topological insulatorSep 22 2013The influence of bulk inversion asymmetry in [001] and [013] grown HgTe quantum wells is investigated theoretically. The bulk inversion asymmetry leads to an anti-crossing gap between two zero-mode Landau levels in a HgTe topological insulator, i.e., ... More
Exact wave functions for the edge state of a disk-shaped two dimensional topological insulatorSep 22 2013We report the exact wave functions for the eigen state of a disk-shaped two dimensional topological insulator. The property of the edge state whose energy lies inside the bulk gap is studied. It is found that the edge state energy is affected by the radius ... More
Dynamics of spinor Bose-Einstein condensate subject to dissipationFeb 02 2016We investigate the internal dynamics of the spinor Bose-Einstein Condensates subject to dissipation by solving the Lindblad master equation. It is shown that for the condensates without dissipation its dynamics always evolve along specific orbital in ... More
Holographic charge transport in 2+1 dimensions at finite $N$Dec 11 2013Apr 28 2014We study holographic charge transport in (2+1) dimensions at finite $N$, whose dual gravity background is given by perturbative black hole solution in Einstein theory plus cubic terms of Weyl tensor. We consider the higher derivative corrections to the ... More
Understanding light scalar meson by color-magnetic wavefunction in QCD sum ruleJan 11 2009Jul 19 2009In this paper, we study the $0^{+}$ nonet mesons as tetraquark states with interpolating currents induced from the color-magnetic wavefunction. This wavefunction is the eigenfunction of effective color-magnetic Hamiltonian with the lowest eigenvalue, ... More
Landau level transitions in InAs/AlSb/GaSb quantum wellsMar 12 2015The electronic structure of InAs/AlSb/GaSb quantum wells embedded in AlSb barriers and in the presence of a perpendicular magnetic field is studied theoretically within the $14$-band ${\bf k}\cdot{\bf p}$ approach without making the axial approximation. ... More
A peculiar two point boundary value problemOct 12 2007In this paper we consider a one-dimensional diffusion equation on the interval $[0,1]$ satisfying non-Feller boundary conditions. As a consequence, the initial value Cauchy problem fails to preserve nonnegativity or boundedness. Nonetheless, probability ... More
Overconvergent family of Siegel-Hilbert modular formsAug 06 2012Nov 03 2013We construct one parameter families of overconvergent Siegel-Hilbert modular forms. In particular, for any classical Siegel-Hilbert modular eigenform one can find a rigid analytic disc centered at this point, on which an infinite family of classical points ... More
Efficiency of electrical manipulation on two-dimensional topological insulatorsSep 21 2013We investigate the efficiency of electrical manipulation on two-dimensional topological insulators by considering a lateral potential superlattice on the system. The electronic states under various conditions are examined carefully. It is found that the ... More
On the Structural Origin of the Single-ion Magnetic Anisotropy in LuFeO3May 03 2016Electronic structures for the conduction bands of both hexagonal and orthorhombic LuFeO3 thin films have been measured using x-ray absorption spectroscopy at oxygen K (O K) edge. Dramatic differences in both the spectra shape and the linear dichroism ... More
Bilayer manganites: polarons in the midst of a metallic breakdownMar 19 2011The exact nature of the low temperature electronic phase of the manganite materials family, and hence the origin of their colossal magnetoresistant (CMR) effect, is still under heavy debate. By combining new photoemission and tunneling data, we show that ... More
Image segmentation based on the hybrid total variation model and the K-means clustering strategyMay 30 2016The performance of image segmentation highly relies on the original inputting image. When the image is contaminated by some noises or blurs, we can not obtain the efficient segmentation result by using direct segmentation methods. In order to efficiently ... More
Physics perspectives of heavy-ion collisions at very high energyOct 20 2015Heavy-ion collisions at very high colliding energies are expected to produce a quark-gluon plasma (QGP) at the highest temperature obtainable in a laboratory setting. Experimental studies of these reactions can provide an unprecedented range of information ... More
Growth of Large-Area and Highly Crystalline MoS2 Thin Layers on Insulating SubstratesFeb 24 2012The two-dimensional layer of molybdenum disulfide (MoS2) has recently attracted much interest due to its direct-gap property and potential applications in optoelectronics and energy harvesting. However, the synthetic approach to obtain high quality and ... More
The grey extinction of the ionizing cluster in NGC 3603 from ultraviolet to optical wavelengthsOct 19 2015We use photometry in the F220W, F250W, F330W, F435W filters from the High Resolution Channel of the Advanced Camera for Surveys and photometry in the F555W, F675W, and F814W filters from the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope ... More
Notes on Properties of Holographic Strange MetalsJun 25 2010Aug 10 2010We investigate properties of holographic strange metals in $p+2$-dimensions, generalizing the analysis performed in arXiv:0912.1061. The bulk spacetime is $p+2$-dimensional Lifshitz black hole, while the role of charge carriers is played by probe D-branes. ... More
Differential inequality of the second derivative that leads to normalityDec 25 2011Let F be a family of functions meromorphic in a domain D. If {|f|/(1+|f|^3):f in F} is locally uniformly bounded away from zero, then F is normal.
On possible $S$-wave bound states for a $N \bar N$ system within a constituent quark modelJul 16 2004We try to apply a constituent quark model (a variety chiral constituent quark model) and the resonating group approach for the multi-quark problems to compute the effective potential between the $N\bar{N}$ in $S$-wave (the quarks in the nucleons $N$ and ... More
Image Based Appraisal of Real Estate PropertiesNov 28 2016Real estate appraisal, which is the process of estimating the price for real estate properties, is crucial for both buys and sellers as the basis for negotiation and transaction. Traditionally, the repeat sales model has been widely adopted to estimate ... More
Transverse Energy production in Ultrarelativistic Heavy Ion CollisionsAug 28 1997Kinetic theory is used to check the applicability of parton cascade in 1 dimensional expansion. Using the information provided by 3 dimensional parton cascade, we model the transverse expansion by an effective area. With this model, kinetic theory is ... More
Learning Multilayer Channel Features for Pedestrian DetectionMar 01 2016Pedestrian detection based on the combination of Convolutional Neural Network (i.e., CNN) and traditional handcrafted features (i.e., HOG+LUV) has achieved great success. Generally, HOG+LUV are used to generate the candidate proposals and then CNN classifies ... More
Planck constraints on inflation in auxiliary vector modified $f(R)$ theoriesFeb 23 2015Jul 21 2015We show that the universal $\alpha$-attractor models of inflation can be realized by including an auxiliary vector field $A_{\mu}$ for the Starobinsky model with the Lagrangian $f(R)=R+R^2/(6M^2)$. If the same procedure is applied to general modified ... More
Reviving the Two-state Markov Chain Approach (Technical Report)Jan 08 2015Oct 25 2016Probabilistic Boolean networks (PBNs) is a well-established computational framework for modelling biological systems. The steady-state dynamics of PBNs is of crucial importance in the study of such systems. However, for large PBNs, which often arise in ... More
Real and Virtual Nucleon Compton Scattering in the Perturbative LimitFeb 17 2006Feb 20 2006We present the results of calculations analyzing nucleon Compton scattering to lowest order using perturbative QCD (pQCD) methods. Two scenarios are considered: (1) the incoming photon is real; and (2) the incoming photon is virtual. The case of a real ... More