total 7698took 0.13s

Random 3-noncrossing partitionsOct 14 2009In this paper, we introduce polynomial time algorithms that generate random 3-noncrossing partitions and 2-regular, 3-noncrossing partitions with uniform probability. A 3-noncrossing partition does not contain any three mutually crossing arcs in its canonical ... More

Characteristics of the curvature effect of uniform jets or spherical fireballsAug 25 2005Aug 28 2005Qin et al. (2004) have derived a formula of count rates based on a model of highly symmetric expanding fireballs, where the Doppler effect is the key factor to be concerned. In this paper, we employ the formula to both the Qin model and the uniform jet ... More

Atomized Spraying of Liquid Metal Droplets on Desired Substrate Surfaces as a Generalized Way for Ubiquitous Printed ElectronicsNov 09 2013A direct electronics printing technique through atomized spraying for patterning room temperature liquid metal droplets on desired substrate surfaces is proposed and experimentally demonstrated for the first time. This method has generalized purpose and ... More

Pervasive liquid metal direct writing electronics with roller-ball penSep 04 2013A roller-ball pen enabled direct writing electronics via room temperature liquid metal ink was proposed. With the rolling to print mechanism, the metallic inks were smoothly written on flexible polymer substrate to form conductive tracks and electronic ... More

Maximum Smoothed Likelihood Component Density Estimation in Mixture Models with Known Mixing ProportionsJul 11 2014In this paper, we propose a maximum smoothed likelihood method to estimate the component density functions of mixture models, in which the mixing proportions are known and may differ among observations. The proposed estimates maximize a smoothed log likelihood ... More

Neutral Networks of Sequence to Shape MapsJun 06 2007Aug 04 2007In this paper we present a novel framework for sequence to shape maps. These combinatorial maps realize exponentially many shapes, and have preimages which contain extended connected subgraphs of diameter n (neutral networks). We prove that all basic ... More

Granger Causality Analysis Based on Quantized Minimum Error Entropy CriterionAug 07 2018Linear regression model (LRM) based on mean square error (MSE) criterion is widely used in Granger causality analysis (GCA), which is the most commonly used method to detect the causality between a pair of time series. However, when signals are seriously ... More

Multi-modal Learning with Prior Visual Relation ReasoningDec 23 2018Visual relation reasoning is a central component in recent cross-modal analysis tasks, which aims at reasoning about the visual relationships between objects and their properties. These relationships convey rich semantics and help to enhance the visual ... More

Structure-Aware 3D Hourglass Network for Hand Pose Estimation from Single Depth ImageDec 26 2018In this paper, we propose a novel structure-aware 3D hourglass network for hand pose estimation from a single depth image, which achieves state-of-the-art results on MSRA and NYU datasets. Compared to existing works that perform image-to-coordination ... More

RNA-RNA interaction prediction based on multiple sequence alignmentsMar 21 2010Jul 14 2010Many computerized methods for RNA-RNA interaction structure prediction have been developed. Recently, $O(N^6)$ time and $O(N^4)$ space dynamic programming algorithms have become available that compute the partition function of RNA-RNA interaction complexes. ... More

Relationship between the rise width and the full width of gamma-ray burst pulses and its implications in terms of the fireball modelAug 28 2005Oct 11 2005Kocevski et al. (2003) found that there is a linear relation between the rise width and the full width of gamma-ray burst pulses detected by the BATSE instrument based on their empirical functions. Motivated by this, we investigate the relationship based ... More

Investigation on the performance of a ducted propeller in oblique flowJan 10 2018In this study, the ducted propeller has been numerically investigated under oblique flow, which is crucial and challenging for the design and safe operation of thruster driven vessel and dynamic positioning (DP) system. A Reynolds-Averaged Navier-Stokes ... More

Nonparametric Inference for Distributional Treatment Effects in Instrumental Variable ModelsMay 12 2016Jul 26 2017In observational studies, the causal effect of a treatment on the distribution of outcomes is of interest beyond the average treatment effect. Instrumental variable methods allow for causal inference by controlling for unmeasured confounding. The existing ... More

Crossings and nesting in tangled-diagramsOct 22 2007Oct 26 2007A tangled-diagram over $[n]=\{1,...,n\}$ is a graph of degree less than two whose vertices $1,...,n$ are arranged in a horizontal line and whose arcs are drawn in the upper halfplane with a particular notion of crossings and nestings. Generalizing the ... More

Robust Matrix Completion via Maximum Correntropy Criterion and Half Quadratic OptimizationMar 14 2019Robust matrix completion aims to recover a low-rank matrix from a subset of noisy entries perturbed by complex noises, where traditional methods for matrix completion may perform poorly due to utilizing $l_2$ error norm in optimization. In this paper, ... More

Combinatorics Of RNA Structures With PseudoknotsApr 19 2007In this paper we derive the generating function of RNA structures with pseudoknots. We enumerate all $k$-noncrossing RNA pseudoknot structures categorized by their maximal sets of mutually intersecting arcs. In addition we enumerate pseudoknot structures ... More

Optimal Power Allocation for OFDM-Based Wire-Tap Channels with Arbitrarily Distributed InputsAug 14 2011In this paper, we investigate power allocation that maximizes the secrecy rate of orthogonal frequency division multiplexing (OFDM) systems under arbitrarily distributed inputs. Considering commonly assumed Gaussian inputs are unrealistic, we focus on ... More

On $k$-noncrossing partitionsOct 26 2007Nov 15 2007In this paper we prove a duality between $k$-noncrossing partitions over $[n]=\{1,...,n\}$ and $k$-noncrossing braids over $[n-1]$. This duality is derived directly via (generalized) vacillating tableaux which are in correspondence to tangled-diagrams ... More

Strength and Stability Analysis of a Single Walled Black Phosphorus Tube under Axial CompressionMar 28 2016Few-layered black phosphorus materials recently attract much attention due to its special electronic properties. As a Consequence, the nano-tube from a single-layer black phosphorus has been theoretically built. The corresponding electronic properties ... More

Robust Learning with Kernel Mean p-Power Error LossDec 21 2016Correntropy is a second order statistical measure in kernel space, which has been successfully applied in robust learning and signal processing. In this paper, we define a nonsecond order statistical measure in kernel space, called the kernel mean-p power ... More

Simultaneous Integer Relation Detection and Its an ApplicationJun 26 2009Jan 25 2010Let $\mathbf{x_1}, ..., \mathbf{x_t} \in \mathbb{R}^{n}$. A simultaneous integer relation (SIR) for $\mathbf{x_1}, ..., \mathbf{x_t}$ is a vector $\mathbf{m} \in \mathbb{Z}^{n}\setminus\{\textbf{0}\}$ such that $\mathbf{x_i}^T\mathbf{m} = 0$ for $i = ... More

Hyperentanglement-enhanced Weak Value Amplification with High-Order Correlation FunctionAug 06 2015By exploiting the hyperentanglement, we propose a new concrete scheme to realize weak value amplification, which can be implemented by N hyperentangled photons along with coincidence detection. Our scheme can optimally increase the amplification factor ... More

Stellar activity with LAMOST. I. Spot configuration in PleiadesAug 18 2016We use the spectra of Pleiades and field stars from LAMOST DR2 archive to study how spottedness and activity vary as a function of mass at young ages. We obtained standard TiO band strength by measuring TiO bands near 7050 $\AA$ from LAMOST spectra (R$\approx$1800) ... More

Quintuple-layer epitaxy of high-quality Bi2Se3 thin films for topological insulatorJun 29 2009We report the growth of atomically smooth, single crystalline Bi2Se3 thin films on Si(111) by using molecular beam epitaxy. Scanning tunneling microscopy, low-energy electron diffraction, X-ray photoelectron emission spectroscopy and Raman spectroscopy ... More

ScanNet: A Fast and Dense Scanning Framework for Metastatic Breast Cancer Detection from Whole-Slide ImagesJul 30 2017Lymph node metastasis is one of the most significant diagnostic indicators in breast cancer, which is traditionally observed under the microscope by pathologists. In recent years, computerized histology diagnosis has become one of the most rapidly expanding ... More

Yield ratios of identified hadrons in p+p, p+Pb, Pb+Pb collisions at the Large Hadron ColliderMar 17 2017Aug 01 2017Yield ratios of identified hadrons observed in high multiplicity p+p and p+Pb collisions at LHC show remarkable similarity with those in Pb+Pb collisions, indicating some important and universal underlying dynamics in hadron production for different quark ... More

Ultra-small phase estimation via weak measurement technique with postselectionSep 14 2015Aug 04 2016Weak measurement is a novel technique for parameter estimation with higher precision. In this paper we develop a general theory for the parameter estimation based on weak measurement technique with arbitrary postselection. The previous weak value amplification ... More

Entanglement of pair cat states and teleportationJun 27 2005The entanglement of pair cat states in the phase damping channel is studied by employing the relative entropy of entanglement. It is shown that the pair cat states can always be distillable in the phase damping channel. Furthermore, we analyze the fidelity ... More

Combining isotonic regression and EM algorithm to predict genetic risk under monotonicity constraintJul 31 2014In certain genetic studies, clinicians and genetic counselors are interested in estimating the cumulative risk of a disease for individuals with and without a rare deleterious mutation. Estimating the cumulative risk is difficult, however, when the estimates ... More

Automated Pulmonary Nodule Detection via 3D ConvNets with Online Sample Filtering and Hybrid-Loss Residual LearningAug 13 2017In this paper, we propose a novel framework with 3D convolutional networks (ConvNets) for automated detection of pulmonary nodules from low-dose CT scans, which is a challenging yet crucial task for lung cancer early diagnosis and treatment. Different ... More

RNA-RNA interaction prediction: partition function and base pair pairing probabilitiesMar 19 2009In this paper, we study the interaction of an antisense RNA and its target mRNA, based on the model introduced by Alkan {\it et al.} (Alkan {\it et al.}, J. Comput. Biol., Vol:267--282, 2006). Our main results are the derivation of the partition function ... More

Selection Effects on the Observed Redshift Dependence of GRB Jet Opening AnglesOct 22 2011Jan 04 2012Apparent redshift dependence of the jet opening angles ($\theta_{\rm j}$) of gamma-ray bursts (GRBs) is observed from current GRB sample. We investigate whether this dependence can be explained with instrumental selection effects and observational biases ... More

Modeling Text with Graph Convolutional Network for Cross-Modal Information RetrievalFeb 03 2018Feb 13 2018Cross-modal information retrieval aims to find heterogeneous data of various modalities from a given query of one modality. The main challenge is to map different modalities into a common semantic space, in which distance between concepts in different ... More

Thermal stability of a free nanotube from single-layer black phosphorusDec 23 2015Similar to the carbon nanotube fabricated from graphene sheet, a black phosphorus nanotube (BPNT) also can theoretically be produced by curling the rectangular single-layer black phosphorus (SLBP). In present study, the effect of thermal vibration of ... More

Automatic 3D Cardiovascular MR Segmentation with Densely-Connected Volumetric ConvNetsAug 02 2017Automatic and accurate whole-heart and great vessel segmentation from 3D cardiac magnetic resonance (MR) images plays an important role in the computer-assisted diagnosis and treatment of cardiovascular disease. However, this task is very challenging ... More

Compressed Anomaly Detection with Multiple Mixed ObservationsJan 31 2018Jun 19 2018We consider a collection of independent random variables that are identically distributed, except for a small subset which follows a different, anomalous distribution. We study the problem of detecting which random variables in the collection are governed ... More

Efficient Counting and Asymptotics of $k$-noncrossing tangled-diagramsFeb 24 2008In this paper we enumerate $k$-noncrossing tangled-diagrams. A tangled-diagram is a labeled graph whose vertices are $1,...,n$ have degree $\le 2$, and are arranged in increasing order in a horizontal line. Its arcs are drawn in the upper halfplane with ... More

Direction-aware Spatial Context Features for Shadow DetectionDec 12 2017May 16 2018Shadow detection is a fundamental and challenging task, since it requires an understanding of global image semantics and there are various backgrounds around shadows. This paper presents a novel network for shadow detection by analyzing image context ... More

Synergistic Image and Feature Adaptation: Towards Cross-Modality Domain Adaptation for Medical Image SegmentationJan 24 2019Apr 28 2019This paper presents a novel unsupervised domain adaptation framework, called Synergistic Image and Feature Adaptation (SIFA), to effectively tackle the problem of domain shift. Domain adaptation has become an important and hot topic in recent studies ... More

Direction-aware Spatial Context Features for Shadow Detection and RemovalMay 12 2018Shadow detection and shadow removal are fundamental and challenging tasks, requiring an understanding of the global image semantics. This paper presents a novel deep neural network design for shadow detection and removal by analyzing the image context ... More

Experimental observation of spatial jitters of a triple-pulse x-ray source based on the pinhole imaging techniqueDec 18 2015In high-energy flash radiography, scattered photons will degrade the acquiring image, which limits the resolving power of the interface and density of the dense object. The application of large anti-scatter grid is capable of remarkably decreasing scattered ... More

Phase diagram and thermal properties of strong-interaction matterJul 03 2015May 03 2016We introduce a novel procedure for computing the (mu,T)-dependent pressure in continuum QCD; and therefrom obtain a complex phase diagram and predictions for thermal properties of the system, providing the in-medium behaviour of the trace anomaly, speed ... More

Guessing probability in quantum key distributionApr 26 2019Guessing probability is a very important security criterion in practical quantum cryptography. We present a simple and efficient method to calculate the upper bound of the guessing probability tightly. The guessing probability of k can be upper bounded ... More

Otem&Utem: Over- and Under-Translation Evaluation Metric for NMTJul 24 2018Although neural machine translation(NMT) yields promising translation performance, it unfortunately suffers from over- and under-translation is- sues [Tu et al., 2016], of which studies have become research hotspots in NMT. At present, these studies mainly ... More

Automatic multi-objective based feature selection for classificationJul 09 2018Feb 13 2019Objective: Accurately classifying the malignancy of lesions detected in a screening scan is critical for reducing false positives. Radiomics holds great potential to differentiate malignant from benign tumors by extracting and analyzing a large number ... More

Two-stage Geometric Information Guided Image ReconstructionSep 26 2014In compressive sensing, it is challenging to reconstruct image of high quality from very few noisy linear projections. Existing methods mostly work well on piecewise constant images but not so well on piecewise smooth images such as natural images, medical ... More

Stochastic Greedy Algorithms For Multiple Measurement VectorsNov 05 2017Sparse representation of a single measurement vector (SMV) has been explored in a variety of compressive sensing applications. Recently, SMV models have been extended to solve multiple measurement vectors (MMV) problems, where the underlying signal is ... More

Sparse Randomized Kaczmarz for Support Recovery of Jointly Sparse Corrupted Multiple Measurement VectorsNov 07 2017Jun 14 2018While single measurement vector (SMV) models have been widely studied in signal processing, there is a surging interest in addressing the multiple measurement vectors (MMV) problem. In the MMV setting, more than one measurement vector is available and ... More

Power Allocation and Time-Domain Artificial Noise Design for Wiretap OFDM with Discrete InputsFeb 10 2013Apr 26 2013Optimal power allocation for orthogonal frequency division multiplexing (OFDM) wiretap channels with Gaussian channel inputs has already been studied in some previous works from an information theoretical viewpoint. However, these results are not sufficient ... More

Microwave-controlled optical double optomechanically induced transparency in a hybrid piezo-optomechanical cavity systemJun 28 2017Jul 03 2018We propose a scheme that is able to generate the microwave controlled optical double optome-chanical induced transparency (OMIT) in a hybrid piezo-optomechanical cavity system, which a piezoelectric optomechanical crystal AlN-nanobeam resonator is placed ... More

SINet: A Scale-insensitive Convolutional Neural Network for Fast Vehicle DetectionApr 02 2018May 16 2018Vision-based vehicle detection approaches achieve incredible success in recent years with the development of deep convolutional neural network (CNN). However, existing CNN based algorithms suffer from the problem that the convolutional features are scale-sensitive ... More

Extending Counter-Streaming Motion from an Active Region Filament to Sunspot Light BridgeDec 19 2017We analyze the high-resolution observations from the 1.6m telescope at Big Bear Solar Observatory that cover an active region filament. Counter-streaming motions are clearly observed in the filament. The northern end of the counter-streaming motions extends ... More

A combinatorial framework for RNA tertiary interactionOct 18 2007Dec 08 2007In this paper we show how to express RNA tertiary interactions via the concepts of tangled diagrams. Tangled diagrams allow to formulate RNA base triples and pseudoknot-interactions and to control the maximum number of mutually crossing arcs. In particular ... More

FRETtranslator: translating FRET traces into RNA structural pathwaysOct 02 2016Recent genome and transcriptome sequencing projects have unveiled a plethora of highly structured RNA molecules as central mediators of cellular function. Single molecule Forster Resonance Energy Transfer (smFRET) is a powerful tool for analyzing the ... More

Random $k$-noncrossing partitionsNov 16 2009In this paper, we introduce polynomial time algorithms that generate random $k$-noncrossing partitions and 2-regular, $k$-noncrossing partitions with uniform probability. A $k$-noncrossing partition does not contain any $k$ mutually crossing arcs in its ... More

Preliminary study on CAD-based method of characteristics for neutron transport calculationJun 21 2013The method of characteristics (MOC) is widely used for neutron transport calculation in recent decades. However, the key problem determining whether MOC can be applied in highly heterogeneous geometry is how to combine an effective geometry modeling method ... More

Towards Time-Aware Distant Supervision for Relation ExtractionMar 08 2019Distant supervision for relation extraction heavily suffers from the wrong labeling problem. To alleviate this issue in news data with the timestamp, we take a new factor time into consideration and propose a novel time-aware distant supervision framework ... More

Nonparametric Inference for Distributional Treatment Effects in Instrumental Variable ModelsMay 12 2016In observational studies, the causal effect of a treatment on the distribution of outcomes is of interest beyond the average treatment effect. Instrumental variable methods allow for causal inference controlling for unmeasured confounding in observational ... More

$Z \to π^+π^-, K^+K^-$: A touchstone of the PQCD approachOct 24 2018Feb 03 2019We study two rare decays, $Z \to \pi^+\pi^-$ and $K^+K^-$, in the perturbative QCD approach up to the next-to-leading order of the strong coupling and the leading power of $1/m_Z$, $m_Z$ being the $Z$ boson mass. The branching ratios $\mathcal{B}(Z\to ... More

Study on the magnetic measurement results of the injection system for CSNS/RCSJul 18 2016A combination of the H- stripping and phase space painting method is used to accumulate a high intensity beam in the Rapid Cycling Synchrotron (RCS) of the China Spallation Neutron Source (CSNS). The injection system for CSNS/RCS consists of three kinds ... More

Segmentation of Drosophila Heart in Optical Coherence Microscopy Images Using Convolutional Neural NetworksMar 05 2018Jul 21 2018Convolutional neural networks are powerful tools for image segmentation and classification. Here, we use this method to identify and mark the heart region of Drosophila at different developmental stages in the cross-sectional images acquired by a custom ... More

On Moduli Spaces and CW Structures Arising from Morse Theory On Hilbert ManifoldsDec 16 2010This paper proves some results on negative gradient dynamics of Morse functions on Hilbert manifolds. It contains the compactness of flow lines, manifold structures of certain compacti- fied moduli spaces, orientation formulas, and CW structures of the ... More

Analysis of critical parameters of satellite stereo image for 3D reconstruction and mappingMay 17 2019Although nowadays advanced dense image matching (DIM) algorithms are able to produce LiDAR (Light Detection And Ranging) comparable dense point clouds from satellite stereo images, the accuracy and completeness of such point clouds heavily depend on the ... More

Joint Target Detection, Tracking and Classification with Forward-Backward PHD SmoothingDec 06 2018Forward-backward Probability Hypothesis Density (PHD) smoothing is an efficient way for target tracking in dense clutter environment. Although the target class has been widely viewed as useful information to enhance the target tracking, there is no existing ... More

Eventually homological isomorphisms in recollements of derived categoriesJul 01 2018For a recollement $(\mathcal{D}B,\mathcal{D}A,\mathcal{D}C)$ of derived categories of algebras, we investigate when the functor $j^*:\mathcal{D}A\rightarrow\mathcal{D}C$ is an eventually homological isomorphism. In this context, we compare the algebras ... More

On the Associativity of GluingJul 27 2011This paper studies the associativity of gluing of trajectories in Morse theory. We show that the associativity of gluing follows from of the existence of compatible manifold with face structures on the compactified moduli spaces. Using our previous work, ... More

Integral points close to a space curveSep 20 2018Apr 18 2019We establish sharp lower and upper bounds for the number of integral points near dilations of a space curve with nowhere vanishing torsion.

Faster Treasure Hunt and Better Strongly Universal Exploration SequencesApr 24 2012In this paper, we investigate the explicit deterministic treasure hunt problem in a $n$-vertex network. This problem was firstly introduced by Ta-Shma and Zwick in \cite{TZ07} [SODA'07]. Note also it is a variant of the well known rendezvous problem in ... More

A network model for cellular agingMay 24 2013Dec 17 2013What is aging? Mechanistic answers to this question remain elusive despite decades of research. Here, we propose a mathematical model of cellular aging based on a model gene interaction network. Our network model is made of only non-aging components - ... More

Triangular bases in quantum cluster algebras and monoidal categorification conjecturesJan 16 2015Dec 15 2016We consider the quantum cluster algebras which are injective-reachable and introduce a triangular basis in every seed. We prove that, under some initial conditions, there exists a unique common triangular basis with respect to all seeds. This basis is ... More

An application of topological equivalence to Morse theoryFeb 14 2011In a previous paper, under the assumption that the Riemannian metric is special, the author proved some results about the moduli spaces and CW structures arising from Morse theory. By virtue of topological equivalence, this paper extends those results ... More

Recollements and homological dimensionsJun 21 2016We investigate the behavior of the homological dimensions under recollements of derived categories of algebras. In particular, we establish a series of new bounds among the selfinjective dimension or $\phi$-dimension of the algebras linked by recollements ... More

Strong screening effects on resonant nuclear reaction $^{23}$Mg $(p,γ)$ $^{24}$Al in the surface of magnetarsFeb 15 2016Based on the theory of relativistic superstrong magnetic fields(SMFs), by using the method of the Thomas-Fermi-Dirac approximations, we investigate the problem of strong electron screening(SES) in SMFs, and the influence of SES on the nuclear reaction ... More

A Mean Value Theorem for the Diophantine Equation $axy-x-y=n$Jul 30 2011Aug 14 2011In this paper, we prove an asymptotic formula for the average number of solutions to the Diophantine equation $axy-x-y=n$ in which $a$ is fixed and and $n$ varies.

Compare triangular bases of acyclic quantum cluster algebrasJun 17 2016Dec 15 2016Given a quantum cluster algebra, we show that its triangular bases defined by Berenstein and Zelevinsky and those defined by the author are the same for the seeds associated with acyclic quivers. This result implies that the Berenstein-Zelevinsky's basis ... More

Bases for upper cluster algebras and tropical pointsFeb 25 2019It is known that many (upper) cluster algebras possess different kinds of good bases which contain the cluster monomials and are parametrized by the tropical points of cluster Poisson varieties. For injective reachable upper cluster algebras, we describe ... More

On the Communication Complexity of Distributed ClusteringJun 30 2015Feb 02 2017In this paper we give a first set of communication lower bounds for distributed clustering problems, in particular, for k-center, k-median and k-means. When the input is distributed across a large number of machines and the number of clusters k is small, ... More

Jordan-Hölder theorems for derived categories of derived discrete algebrasJun 27 2015For any positive integer $n$, $n$-derived-simple derived discrete algebras are classified up to derived equivalence. Furthermore, the Jordan-H\"older theorems for all kinds of derived categories of derived discrete algebras are obtained.

Empirical likelihood for linear models with spatial errorsAug 27 2018For linear models with spatial errors, the empirical likelihood ratio statistics are constructed for the parameters of the models. It is shown that the limiting distributions of the empirical likelihood ratio statistics are chi-squared distributions, ... More

Direct $CP$ violation from isospin symmetry breaking effects in PQCDJul 29 2018Feb 26 2019We investigate the direct $CP$ violation for the decay process of $\bar{B}_{s}\rightarrow P(V)\pi^{0}$ (P,V refer to the pseudoscalar meson and vector meson, respectively) via isospin symmetry breaking effects from the $\pi^{0}-\eta-\eta'$ mixing mechanism ... More

Inference for case-control studies with incident and prevalent casesMar 16 2018We propose and study a fully efficient method to estimate associations of an exposure with disease incidence when both, incident cases and prevalent cases, i.e. individuals who were diagnosed with the disease at some prior time point and are alive at ... More

Test for homogeneity with unordered paired observationsMay 04 2019In some applications, an experimental unit is composed of two distinct but related subunits. The response from such a unit is $(X_{1}, X_{2})$ but we observe only $Y_1 = \min\{X_{1},X_{2}\}$ and $Y_2 = \max\{X_{1},X_{2}\}$, i.e., the subunit identities ... More

Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3May 07 2019Correlation between the variations of quasar absorption lines and the ionizing continuum have been recently confirmed in systematic studies. However, no convincing individual case is reported. We present a statistical analysis of the variable C iv broad ... More

A Two-Dimensional CA Traffic Model with Dynamic Route Choices Between Residence and WorkplaceJun 12 2012The Biham, Middleton and Levine (BML) model is extended to describe dynamic route choices between the residence and workplace in cities. The traffic dynamic in the city with a single workplace is studied from the velocity diagram, arrival time probability ... More

Method of determining cosmological parameter ranges with samples of candles with an intrinsic distributionFeb 18 2005Nov 27 2005In this paper, the effect of the intrinsic distribution of cosmological candles is investigated. We find that, in the case of a narrow distribution, the deviation of the observed modulus of sources from the expected central value could be estimated within ... More

Evidence for photoionization-driven variability in narrow absorption linesJun 02 2017In this Letter, we report the discovery of a strong correlation between the variability of narrow absorption lines (NALs) and the ionizing continuum from a two-epoch spectra sample of 40 quasars containing 52 variable C iv {\lambda}{\lambda}1548; 1551 ... More

Mimicing the Kane-Mele type spin orbit interaction by spin-flexual phonon coupling in graphene devicesMar 28 2015Jun 08 2017On the efforts of enhancing the spin orbit interaction (SOI) of graphene for seeking the dissipationless quantum spin Hall devices, unique Kane-Mele type SOI and high mobility samples are desired. However, common external decoration often introduces extrinsic ... More

Group sparse optimization via $\ell_{p,q}$ regularizationJan 28 2016In this paper, we investigate a group sparse optimization problem via $\ell_{p,q}$ regularization in three aspects: theory, algorithm and application. In the theoretical aspect, by introducing a notion of group restricted eigenvalue condition, we establish ... More

A Multiphase Image Segmentation Based on Fuzzy Membership Functions and L1-norm FidelityApr 09 2015Feb 12 2016In this paper, we propose a variational multiphase image segmentation model based on fuzzy membership functions and L1-norm fidelity. Then we apply the alternating direction method of multipliers to solve an equivalent problem. All the subproblems can ... More

Cardy-Verlinde Formula and entropy bounds in Kerr-Newman-AdS$_4$/dS$_4$ black holes backgroundsJan 30 2002Feb 27 2002The Cardy-Verlinde formula is further verified by using the Kerr-Newman-AdS$_4$ and Kerr-Newman-dS$_4$ black holes. In the Kerr-Newman-AdS$_4$ spacetime, we find that, for strongly coupled CFTs with AdS duals, to cast the entropy of the CFT into the Cardy-Verlinde ... More

Dirac quasinormal modes of the Reissner-Nordström de Sitter black holeDec 17 2003The quasinormal modes of the Reissner-Nordstr\"om de Sitter black hole for the massless Dirac fields are studied using the P\"oshl-Teller potential approximation. We find that the magnitude of the imaginary part of the quasinormal frequencies decreases ... More

Jordan Triple Elementary Maps on RingsJun 04 2007Jun 07 2007We prove that Jordan triple elementary surjective maps on unital rings containing a nontrivial idempotent are automatically additive.

Unitary and orthogonal equivalence of sets of matricesApr 26 2015Two matrices $A$ and $B$ are called unitary (resp. orthogonal) equivalent if $AU=VB$ for two unitary (resp. orthogonal) matrices $U$ and $V$. Using trace identities, criteria are given for simultaneous unitary, orthogonal or complex orthogonal equivalence ... More

Spontaneous Lorentz Violation and BaryogenesisNov 15 2007Dec 18 2007In the presence of background fields that spontaneously violate Lorentz invariance, a matter-antimatter asymmetry can be generated even in thermal equilibrium. In this paper we systematically investigate models of this type, showing that either high-energy ... More

A class of rotationally symmetric quantum layers of dimension 4Mar 25 2012Jan 28 2013Under several geometric conditions imposed below, the existence of the discrete spectrum below the essential spectrum is shown for the Dirichlet Laplacian on the quantum layer built over a spherically symmetric hypersurface with a pole embedded in the ... More

Solutions and perturbation analysis of the matrix equation X - \sum_{i=1}^m A_i^* X^{-1} A_i = QAug 17 2012Consider the nonlinear matrix equation X-sum_{i=1}^{m}A_{i}^{*}X^{-1}A_{i}=Q. This paper shows that there exists a unique positive definite solution to the equation without any restriction on A_{i}. Three perturbation bounds for the unique solution to ... More

Late-time behavior of massive Dirac fields in a Schwarzschild backgroundMay 25 2004Aug 26 2004The late-time tail behavior of massive Dirac fields is investigated in the Schwarzschild black-hole geometry and the result is compared with that of the massive scalar fields. It is shown that in the intermediate times there are three kinds of differences ... More

Quasinormal modes of Dirac field perturbation in Schwarzschild-anti-de Sitter black holeFeb 03 2005The quasinormal modes (QNMs) associated with the decay of Dirac field perturbation around a Schwarzschild-anti-de Sitter (SAdS) black hole is investigated by using Horowitz-Hubeny approach. We find that both the real and the imaginary parts of the fundamental ... More

Late-time evolution of charged massive Dirac fields in the Reissner-Nordström black-hole backgroundAug 29 2004Jun 17 2005The late-time evolution of the charged massive Dirac fields in the background of a Reissner-Norstr\"om (RN) black hole is studied. It is found that the intermediate late-time behavior is dominated by an inverse power-law decaying tail without any oscillation ... More

Cardy-Verlinde Formula and asymptotically flat rotating Charged black holesFeb 08 2002Feb 28 2002The Cardy-Verlinde formula is generalized to the asymptotically flat rotating charged black holes in the Einstein-Maxwell theory and low-energy effective field theory describing string by using some typical spacetimes, such as the Kerr-Newman, Einstein-Maxwell-dilaton-axion, ... More