Results for "R. M. Qiao"

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Mapping of dissipative particle dynamics in fluctuating hydrodynamics simulationsJan 15 2008Dissipative particle dynamics (DPD) is a novel particle method for mesoscale modeling of complex fluids. DPD particles are often thought to represent packets of real atoms, and the physical scale probed in DPD models are determined by the mapping of DPD ... More
Constraint on parameters of the Inverse Compton Scattering model for radio pulsarsAug 19 2011The inverse Compton scattering (ICS) model can explain various pulse profile shapes and diversity of pulse profile evolution based on the mechanism that the radio emission is generated through inverse Compton scattering between secondary relativistic ... More
Wind braking of magnetarsMay 08 2012Mar 18 2013(adapted)Considering recent observations challenging the traditional magnetar model, we explore the wind braking of magnetars. There is evidence for strong multipole magnetic fields in active magnetars, but the dipole field inferred from spin down measurements ... More
Computing Topology Preservation of RBF Transformations for Landmark-Based Image RegistrationOct 13 2014In image registration, a proper transformation should be topology preserving. Especially for landmark-based image registration, if the displacement of one landmark is larger enough than those of neighbourhood landmarks, topology violation will be occurred. ... More
Statistical Delay Tradeoffs in Buffer-Aided Two-Hop Wireless Communication SystemsNov 16 2014Mar 23 2016This paper analyzes the impact of statistical delay constraints on the achievable rate of a two-hop wireless communication link, in which the communication between a source and a destination is accomplished via a buffer-aided relay node. It is assumed ... More
Nano-engineering of electron correlation in oxide superlatticesMar 14 2019Oxide heterostructures and superlattices have attracted a great deal of attention in recent years owing to the rich exotic properties encountered at their interfaces. We focus on the potential of tunable correlated oxides by investigating the spectral ... More
Harmonic, Monogenic and Hypermonogenic Functions on Some Conformally Flat Manifolds in $R^n$ arising from Special Arithmetic Groups of the Vahlen GroupApr 19 2004This paper focuses on the development of harmonic and Clifford analysis techniques in the context of some conformally flat manifolds that arise from factoring out a simply-connected domain from $R^n$ by special arithmetic subgroups of the conformal group. ... More
Are there real orthogonal polarization modes in pulsar radio emission?Jul 05 2000The Orthogonal Polarization Modes (OPM) have been reported observationally and accepted widely by pulsar researchers. However, no acceptable theory can show the origin of the OPM, which becomes a mystery in pulsar research field. Here a possible way to ... More
Electric Character of Strange StarsAug 17 1999Using the Thomas-Fermi model, we investigated the electric characteristics of a static non-magnetized strange star without crust in this paper. The exact solutions of electron number density and electric field above the quark surface are obtained. These ... More
Anomalous Hall Effect in Variable Range Hopping Regime: Unusual Scaling Law and Sign Reversal with TemperatureJun 22 2014Anomalous Hall effect (AHE) is important for understanding the topological properties of electronic states, and provides insight into the spin-polarized carriers of magnetic materials. AHE has been extensively studied in metallic, but not variable-range-hopping ... More
Pulsar braking index: A test of emission models?Aug 14 2001Sep 14 2001Pulsar braking torques due to magnetodipole radiation and to unipolar generator are considered, which results in braking index being less than 3 and could be employed to test the emission models. Improved equations to obtain pulsar braking index and magnetic ... More
Structural Phases of Bounded Three-Dimensional Screened Coulomb Clusters (Finite Yukawa System)Dec 11 2006Dec 12 2006The formation of three-dimensional (3D) dust clusters within a complex plasma modeled as a spatially confined Yukawa system is simulated using the box_tree code. Similar to unscreened Coulomb clusters, the occurrence of concentric shells with characteristic ... More
Resonant soft x-ray emission as a bulk probe of correlated electron behavior in metallic Sr$_x$Ca$_{1-x}$VO$_3$Jul 24 2013The evolution of electron correlation in Sr$_{x}$Ca$_{1-x}$VO$_3$ has been studied using a combination of bulk-sensitive resonant soft x-ray emission spectroscopy (RXES), surface-sensitive photoemission spectroscopy (PES), and ab initio band structure ... More
Detection of 107 glitches in 36 southern pulsarsNov 09 2012Timing observations from the Parkes 64-m radio telescope for 165 pulsars between 1990 and 2011 have been searched for period glitches. A total of 107 glitches were identified in 36 pulsars, where 61 have previously been reported and 46 are new discoveries. ... More
Cation nonstoichiometry and its impact on nucleation, structure and defect formation in complex oxide heteroepitaxy : LaCrO3 on SrTiO3(001)Nov 12 2012Our ability to design and fabricate electronic devices with reproducible properties using complex oxides is critically dependent on our ability to controllably synthesize these materials in thin-film form. Structure-property relationships are intimately ... More
Single 100-terawatt attosecond X-ray light pulse generationOct 11 2016The birth of attosecond light sources is expected to inspire a breakthrough in ultrafast optics, which may extend human real-time measurement and control techniques into atomic-scale electronic dynamics. For applications, it is essential to obtain a single ... More
Performance analysis of the prototype THz-driven electron gun for the AXSIS projectApr 04 2018The AXSIS project (Attosecond X-ray Science: Imaging and Spectroscopy) aims to develop a THz-driven compact X-ray source for applications e.g. in chemistry and biology by using ultrafast coherent diffraction imaging and spectroscopy. The key components ... More
Generation of ten kilotesla longitudinal magnetic fields in ultraintense laser-solenoid target interactionsMar 19 2018Production of the huge longitudinal magnetic fields by using an ultraintense laser pulse irradiating a solenoid target is considered. Through three-dimensional particle-in-cell simulations, it is shown that the longitudinal magnetic field up to ten kilotesla ... More
Pulsar rotation measures and the magnetic structure of our GalaxyMar 06 1999We have obtained 63 rotation measures (RMs) from polarization observations of southern pulsars, of which 54 are new measurements and 3 are varied from previous values. The new pulsar RM data at high Galactic latitudes are mostly consistent with the antisymmetric ... More
Possible evidence for the pulsed X-ray emission from outer gap in PSR B1937+21?Mar 24 2002Jun 12 2002The fastest millisecond pulsar PSR B1937+21 presents an interpulse separated from the main pulse by nealy 180^o at radio frequencies. Recently, the ASCA observations (Takahashi et al. 2001) detected pulsed X-ray emission from this pulsar. Only a single ... More
What if pulsars are born as strange stars?Jun 01 2000The possibility and the implications of the idea, that pulsars are born as strange stars, are explored. Strange stars are very likely to have atmospheres with typical mass of $\sim 5\times 10^{-15}M_\odot$ but bare polar caps almost throughout their lifetimes, ... More
A Further Study of Relative longitude shift of Pulsar BeamsJan 01 2001Mar 28 2001It is of great important to study pulsar beam shapes if we are concerned with emission theories and pulsar birth rate. Both observations and/or the inverse Compton scattering model show that different emission components are emitted from different heights. ... More
Are AXPs/SGRs magnetars?May 21 2010Anomalous X-ray Pulsars and Soft Gamma-Ray Repeaters have been generally recognized as neutron stars with super strong magnetic fields, namely "magnetars". The "magnetars" manifest that the luminosity in X-ray band are larger than the rotational energy ... More
Are Pulsars Bare Strange Stars?Sep 29 1999It is believed that pulsars are neutron stars or strange stars with crusts. However we suggest here that pulsars may be bare strange stars (i.e., strange stars without crust). Due to rapid rotation and strong emission, young strange stars produced in ... More
A Hybrid Two Component Accretion Flow Surrounding Supermassive Black Holes in AGNMay 04 2015It is commonly believed that the optical/UV and X-ray emissions in luminous AGN are produced in an accretion disk and an embedded hot corona respectively. The inverse Compton scattering of disk photons by hot electrons in the corona can effectively cool ... More
Pulsars and Gravitational WavesSep 05 2011Sep 13 2011The relationship between pulsar-like compact stars and gravitational waves is briefly reviewed. Due to regular spins, pulsars could be useful tools for us to detect ~nano-Hz low-frequency gravitational waves by pulsar-timing array technique; besides, ... More
High-energy accelerators above pulsar polar capsSep 29 1999Similar to the terrestrial collision accelerators of electron-antielectron, another kind of accelerator is above a positively or negatively charged pulsar polar cap. In the case of pulsars with magnetic axis parallel (anti-parallel) to rotational axis, ... More
How fast could a proto-pulsar rotate?Jun 11 2002According to two estimated relations between the initial period and the dynamo-generated magnetic dipole field of pulsars, we calculate the statistical distributions of pulsar initial periods. It is found that proto-pulsars are very likely to have rotation ... More
Nature and Nurture: a model for soft gamma-ray repeatersOct 11 2000During supernova explosions, strange stars with almost bare quark surfaces may be formed. Under certain conditions, these stars could be rapidly spun down by the torque exerted by the fossil disks formed from the fall-back materials. They may also receive ... More
PSR 0943+10: a bare strange star?Jul 11 1999Jul 13 1999Recent work by Rankin & Deshpande strongly suggests that there exist strong ``micro-storms'' rotating around the magnetic axis of the 1.1s pulsar PSR 0943+10. Such a feature hints that most probably the large-voltage vacuum gap proposed by Ruderman & ... More
A note on the discovery of absorption features in 1E 1207.4-5209Jul 03 2002Oct 26 2002In a paper by Sanwal et al. (2002), it is supposed to be very difficult to interpret the absorption features in term of cyclotron lines. However, we would like to address here that the possibility of the absorption being cyclotron resonance can not be ... More
Accelerating charging dynamics in sub-nanometer poresNov 29 2013Having smaller energy density than batteries, supercapacitors have exceptional power density and cyclability. Their energy density can be increased using ionic liquids and electrodes with sub-nanometer pores, but this tends to reduce their power density ... More
Polarization Characteristics of Pulsar ProfilesNov 16 1999Polarization profiles of several hundred pulsars have been published recently (eg. Gould & Lyne 1998, GL98; Weisberg et al. 1999). In this report, we summarize the characteristics of circular and high linear polarizations of pulsar profiles, based on ... More
Green Wireless Sensor Networks with Wireless Power TransferNov 26 2016An energy cooperation policy for energy harvesting wireless sensor networks (WSNs) with wireless power transfer is proposed in this paper to balance the energy at each sensor node and increase the total energy utilization ratio of the whole WSNs. Considering ... More
Graded index and randomly oriented core-shell silicon nanowires with broadband and wide angle antireflection for photovoltaic cell applicationsAug 04 2011Antireflection with broadband and wide angle properties is important for a wide range of applications on photovoltaic cells and display. The SiOx shell layer provides a natural antireflection from air to the Si core absorption layer. In this work, we ... More
Two Qubit Quantum Computing in a Projected SubspaceOct 04 2001Feb 05 2002A formulation for performing quantum computing in a projected subspace is presented, based on the subdynamical kinetic equation (SKE) for an open quantum system. The eigenvectors of the kinetic equation are shown to remain invariant before and after interaction ... More
Ion acceleration in multispecies targets driven by intense laser radiation pressureJul 18 2012The acceleration of ions from ultra-thin foils has been investigated using 250 TW, sub-ps laser pulses, focused on target at intensities up to $3\times10^{20} \Wcm2$. The ion spectra show the appearance of narrow band features for proton and Carbon peaked ... More
Multidimensional effects on proton acceleration using high-power intense laser pulsesJan 18 2018Dimensional effects in particle-in-cell (PIC) simulation of target normal sheath acceleration (TNSA) of protons are considered. As the spatial divergence of the laser-accelerated hot sheath electrons and the resulting space-charge electric field on the ... More
Circular polarization in pulsar integrated profilesJun 01 1998Jul 21 1998We present a systematic study of the circular polarization in pulsar integrated profiles, based on published polarization data. For core components, we find no significant correlation between the sense-change of circular polarization and the sense of ... More
Dominance of Radiation Pressure in Ion Acceleration with Linearly Polarized Pulses at Intensities of $10^{21}\textrm{W}\textrm{cm}^{-2}$Jan 30 2012A novel regime is proposed where, employing linearly polarized laser pulses at intensities $10^{21}\textrm{Wcm}^{-2}$ as two order of magnitude lower than earlier predicted [T. Esirkepov et al., Phys. Rev. Lett. 92, 175003 (2004)], ions are dominantly ... More
New SVD based initialization strategy for Non-negative Matrix FactorizationOct 10 2014There are two problems need to be dealt with for Non-negative Matrix Factorization (NMF): choose a suitable rank of the factorization and provide a good initialization method for NMF algorithms. This paper aims to solve these two problems using Singular ... More
Convex Polytopes for the Central Degeneration of the Affine GrassmannianApr 28 2016Jun 15 2018We study algebraic geometry and combinatorics of the central degeneration (the degeneration that shows up in local models of Shimura varieties and Gaitsgory's central sheaves) in type A. More specifically, we elucidate the central degeneration of semi-infinite ... More
On existence of the incompressible Navier-Stokes equation and the Euler equationJun 15 2017In this paper, we suggest a possible series form solution to the Navier-Stokes equation and the Euler equation. With the initial velocity vector known, a series form solution for the velocity vector and pressure can be calculated. We admit that the convergence ... More
Nonparametric Estimation of Surface Integrals on Density Level SetsApr 10 2018The estimation of surface integrals on density level sets is important (such as for confidence regions and bandwidth selection) in the study of nonparametric level set estimation. We consider a plug-in estimator based on kernel density estimation. By ... More
Multiple Rotation Type Solutions for Hamiltonian Systems on $T^\ell\times\mathbb{R}^{2n-\ell}$Mar 21 2010This paper deals with multiplicity of rotation type solutions for Hamiltonian systems on $T^\ell\times \mathbb{R}^{2n-\ell}$. It is proved that, for every spatially periodic Hamiltonian system, i.e., the case $\ell=n$, there exist at least $n+1$ geometrically ... More
Effective Filtering for Multiscale Stochastic Dynamical Systems driven by Lévy processesOct 23 2018Nov 07 2018In the paper, we consider multiscale stochastic dynamical systems driven by L\'evy processes. Firstly, it is proved that these systems can be approximated by low-dimensional systems on random invariant manifolds. Secondly, we establish that nonlinear ... More
Asymptotics and Optimal Bandwidth Selection for Nonparametric Estimation of Density Level SetsJul 31 2017Apr 11 2018Bandwidth selection is crucial in the kernel estimation of density level sets. Risk based on the symmetric difference between the estimated and true level sets is usually used to measure their proximity. In this paper we provide an asymptotic $L^p$ approximation ... More
Gevrey analyticity of solutions to the 3D nematic liquid crystal flows in critical Besov spaceDec 04 2015We show that the solution to the Cauchy problem of the 3D nematic liquid crystal flows, with initial data belongs to a critical Besov space, belongs to a Gevrey class. More precisely, it is proved that for any $(u_{0},d_{0} - \overline{d}_{0}) \in \dot{B}^{\frac{3}{p}-1}_{p,1} ... More
Negative order MKdV hierarchy and a new integrable Neumann-like systemJan 31 2002The purpose of this paper is to develop the negative order MKdV hierarchy and to present a new related integrable Neumann-like Hamiltonian flow from the view point of inverse recursion operator and constraint method. The whole MKdV hierarchy both positive ... More
Constructing non-equilibrium statistical ensemble formalism based on SubdynamicsSep 13 2007In this work, we present a general non-equilibrium ensemble formalism based on the subdynamic equation (SKE). The constructing procedure is to use a similarity transformation between Gibbsian ensemble formalism and the non-equilibrium ensemble formalism. ... More
Space-time derivative estimates of the Kock-Tataru solutions to the nematic liquid crystal system in Besov spacesJun 18 2014In recent paper \cite{DW1} (Y. Du and K. Wang, Space-time regularity of the Kock $\&$ Tataru solutions to the liquid crystal equations, SIAM J. Math. Anal., \textbf{45}(6), 3838--3853.), the authors proved that the global-in-time Koch-Tataru type solution ... More
Multiple Forced rotations for the N-pendulum EquationMar 13 2015In this paper, we consider the planar forced N-pendulum equation. Multiple rotational solutions are obtained.
Topological complexity, minimality and systems of order two on torusApr 10 2015Apr 14 2015The dynamical system on T^2 which is a group extension over an irrational rotation on T^1 is investigated. The criterion when the extension is minimal, a system of order 2 and when the maximal equicontinuous factor is the irrational rotation is given. ... More
Convergence of Nonlinear Filtering for Stochastic Dynamical Systems with Lévy NoisesJul 25 2017Sep 06 2018We consider the nonlinear filtering problem of multiscale non-Gaussian signal processes and observation processes with jumps. Firstly, we prove that the dimension for the signal system could be reduced. Secondly, convergence of the corresponding nonlinear ... More
Effective Filtering for Multiscale Stochastic Dynamical Systems driven by Lévy processesOct 23 2018Mar 06 2019In the paper, we consider multiscale stochastic dynamical systems driven by L\'evy processes. Firstly, it is proved that these systems can be approximated by low-dimensional systems on random invariant manifolds. Secondly, we establish that nonlinear ... More
Convex Polytopes for the Central Degeneration of the Affine GrassmannianApr 28 2016Aug 30 2016We study the central degeneration (the degeneration that shows up in local models of Shimura varieties and Gaitsgory's central sheaves) of semi-infinite orbits, MV Cycles, and Iwahori orbits in the affine Grassmannian of type A, by considering their moment ... More
Condensation and evolution of space-time networkSep 29 2008In this work, we try to propose, in a novel way using the Bose and Fermi quantum network approach, a framework studying condensation and evolution of space time network described by the Loop quantum gravity. Considering quantum network connectivity features ... More
Effective Filtering for Multiscale Stochastic Dynamical Systems in Hilbert SpacesApr 17 2018Sep 06 2018In the paper, effective filtering for a type of slow-fast data assimilation systems in Hilbert spaces is considered. Firstly, the system is reduced to a system on a random invariant manifold. Secondly, nonlinear filtering of the origin system can be approximated ... More
Coal Enterprise Management and Asynchronism of ReturnNov 09 2012For researching the association between coal enterprise management and return in financial market, this paper applies the method of time difference relevance and PageRank method to seek the leader-index of a stock set containing 21 coal enterprises in ... More
Noncrossing Ordinal ClassificationMay 13 2015Dec 21 2015Ordinal data are often seen in real applications. Regular multicategory classification methods are not designed for this data type and a more proper treatment is needed. We consider a framework of ordinal classification which pools the results from binary ... More
Effective Filtering for Multiscale Stochastic Dynamical Systems in Hilbert SpacesApr 17 2018Mar 06 2019In the paper, effective filtering for a type of slow-fast data assimilation systems in Hilbert spaces is considered. Firstly, the system is reduced to a system on a random invariant manifold. Secondly, nonlinear filtering of the origin system can be approximated ... More
Exponential ergodicity for SDEs with jumps and non-Lipschitz coefficientsJul 11 2012In this paper we show irreducibility and the strong Feller property for transition probabilities of stochastic differential equations with jumps and monotone coefficients. Thus, exponential ergodicity and the spectral gap for the corresponding transition ... More
Recent developments of inverse Compton scattering model of pulsar radio emissionNov 13 1999Many theoretical efforts were made to understand the core and conal emission identified from observations by Rankin (1983) and Lyne and Manchester (1988). One of them, named as inverse Compton scattering (ICS) model (Qiao & Lin 1998), has been proposed. ... More
Density-functional studies of spin-orbit splitting in graphene on metalsAug 04 2010Spin-orbit splitting in graphene on Ni, Au, or Ag (111) substrates was examined on the basis of density-functional theory. Graphene grown on the three metals was found to have Rashba splitting of a few or several tens of meV. The strong splitting obtained ... More
Torus Models of the Outer Disc of the Milky Way using LAMOST Survey DataMay 01 2017Jun 02 2017With a sample of 48,161 K giant stars selected from the LAMOST DR 2 catalogue, we construct torus models in a large volume extending, for the first time, from the solar vicinity to a Galactocentric distance of $\sim 20$ kpc, reaching the outskirts of ... More
The large-scale Galactic magnetic field structure and pulsar rotation measuresNov 11 2002Pulsars provide unique probes for the {\it large-scale} interstellar magnetic field in the Galactic disk. The Parkes multibeam pulsar survey has discovered many distant pulsars which enables us for the first time to explore the magnetic field in most ... More
Pulsar rotation measures and the large-scale structure of Galactic magnetic fieldJan 17 2006The large-scale magnetic field of our Galaxy can be probed in three dimensions using Faraday rotation of pulsar signals. We report on the determination of 223 rotation measures from polarization observations of relatively distant southern pulsars made ... More
The annular gap model for gamma-ray emission from young and millisecond pulsarsApr 19 2010Pulsed high energy radiation from pulsars is not yet completely understood. In this paper, we use the 3D self-consistent annular gap model to study light curves for both young and millisecond pulsars observed by the Fermi Gamma-ray Space Telescope. The ... More
A model for the challenging "bi-drifting" phenomenon in PSR J0815+09Oct 20 2004A new drifting pulsar, PSR J0815+09, was discovered in the Arecibo drift-scan searches. An intriguing feature of this source is that within the four pulse components in the integrated pulse profile, the sub-pulse drifting direction in the two leading ... More
GRB: A Signature of Phase Transition to QGP?Aug 24 1999It is suggested that the inner energetic engine of Gamma ray burst (GRB) may be the result of the transition of normal hadron to quark-gluon plasma (QGP) in rapidly-rotating and spin-down newborn neutron star. When such a nascent neutron star slows down ... More
Formation of Sub-millisecond Pulsars and Possibility of DetectionJul 15 2009Pulsars have been recognized as normal neutron stars, but sometimes argued as quark stars. {\it Sub-millisecond pulsars, if detected, would play an essential and important role in distinguishing quark stars from neutron stars.} We focus on the formation ... More
Radio and gamma-ray emission from pulsarsMar 11 2003The radiation of pulsars have been observed for many years. A few pulsars are discovered to have both radio and gamma-ray emission. Many models on pulsar radiation have been developed, but so far we are still lacking an elaborate model which can explain ... More
Energy Loss of Particles in Pulsar Radio Emission RegionMay 28 2001Extremely relativistic particles play an important role in various radiative mechanisms of pulsar radio as well as high-energy emission. It is thus very essential to estimate the Lorentz factor of these particles in the radiation regions both observationally ... More
Controlling the transport of single photons by tuning the frequency of either one or two cavities in an array of coupled cavitiesSep 15 2009Apr 14 2010We theoretically study how to control transport, bound states, and resonant states of a single photon in a one-dimensional coupled-cavity array. We find that the transport of a single photon in the cavity array can be controlled by tuning the frequency ... More
Ground-state OH maser distributions in the Galactic Centre regionNov 14 2016Ground-state OH masers identified in the Southern Parkes Large-Area Survey in Hydroxyl were observed with the Australia Telescope Compact Array to obtain positions with high accuracy ($\sim$1\,arcsec). We classified these OH masers into evolved star OH ... More
A Joint model for radio and gamma-ray emission from pulsarsMar 11 2003Although pulsars can radiate electromagnetic wave from radio to gamma ray bands, we still have no a united model to understand the multi-band emission. In this paper the effort for a joint model is presented. The inverse Compton scattering (ICS) and a ... More
Pulsar's kicks and Gamma-ray burstsJan 31 2007Jun 12 2007The consistence of the distributions of pulsar's kick velocities from the model of GRB and from the pulsar observations is tested based on the supernova-GRB ($\gamma$-ray burst) association and under the assumption that the GRB asymmetric explosions produce ... More
An accretion disk model for periodic timing variations of pulsarsJun 24 2003The long-term, highly periodic and correlated variations in both the pulse shape and the rate of slow-down of two isolated pulsars (PSRs) PSR B1828-11 and PSR B1642-03 were discovered recently. This phenomenon may provide evidence for "free precession" ... More
Valence Band Dispersion Measurements of Perovskite Single Crystal with Angle-resolved Photoemission SpectroscopyDec 14 2016The electronic structure of the cleaved perovskite (CH3NH3PbBr3) single crystal was studied in an ultra-high vacuum (UHV) system by angle-resolved photoemission spectroscopy (ARPES) and inverse photoelectron spectroscopy (IPES). Highly reproducible dispersive ... More
Generalized r-matrix structure and algebro-geometric solution for integrable systemsOct 17 2002The purpose of this paper is to construct a generalized r-matrix structure of finite dimensional systems and an approach to obtain the algebro-geometric solutions of integrable nonlinear evolution equations (NLEEs). Our starting point is a generalized ... More
Rotational solutions of prescribed period of Hamiltonian systems on $\R^{2n-k}\ts T^k$Mar 13 2015In this paper, we consider Hamiltonian systems on $\R^{2n-k}\ts T^k$. Multiple rotational solutions are obtained.
Outage Effective Capacity of Buffer-Aided Diamond Relay Systems Using HARQ with Incremental RedundancyNov 22 2016In this paper, transmission over buffer-aided diamond relay systems under statistical quality of service (QoS) constraints is studied. The statistical QoS constraints are imposed as limitations on delay violation probabilities. In the absence of channel ... More
Effective Capacity of Buffer-Aided Full-Duplex Relay Systems with Selection RelayingOct 13 2015In this work, the achievable rate of three-node relay systems with selection relaying under statistical delay constraints, imposed on the limitations of the maximum end-to-end delay violation probabilities, is investigated. It is assumed that there are ... More
Market Liquidity and Convexity of Order Book (Evidence From China)Nov 09 2012Market liquidity plays a vital role in the field of market micro-structure, because it is the vigor of the financial market. This paper uses a variable called convexity to measure the potential liquidity provided by order-book. Based on the high-frequency ... More
On the temporal decay of solutions to the two-dimensional nematic liquid crystal flowsSep 30 2014We consider the temporal decay estimates for weak solutions to the two-dimensional nematic liquid crystal flows, and we show that the energy norm of a global weak solution has non-uniform decay \begin{align*} \|u(t)\|_{L^{2}}+\|\nabla d(t)\|_{L^{2}}\rightarrow ... More
Uniqueness for Measure-Valued Equations of Nonlinear Filtering for Stochastic Dynamical Systems with Lévy NoisesJul 25 2017Jan 03 2018In the article, Zakai and Kushner-Stratonovich equations of the nonlinear filtering problem for a non-Gaussian signal-observation system are considered. Moreover, we prove that under some general assumption, the Zakai equation has pathwise uniqueness ... More
Searching for sub-millisecond pulsars from highly polarized radio sourcesOct 22 2003Pulsars are among the most highly polarized sources in the universe. The NVSS has catalogued 2 million radio sources with linear polarization measurements, from which we have selected 253 sources, with polarization percentage greater than 25%, as targets ... More
On the inverse Compton scattering model of radio pulsarsJan 01 2000Some characteristics of the inverse Compton scattering (ICS) model are reviewed. At least the following properties of radio pulsars can be reproduced in the model: core or central emission beam, one or two hollow emission cones, different emission heights ... More
Braking PSR J1734-3333 with a possible fall-back diskNov 18 2012Mar 17 2014The very small braking index of PSR J1734-3333, $n=0.9\pm0.2$, challenges the current theories of braking mechanisms in pulsars. We present a possible interpretation that this pulsar is surrounded by a fall-back disk and braked by it. A modified braking ... More
The missing compact star of SN1987A: a solid quark star?Jan 15 2012Apr 20 2012To investigate the missing compact star of Supernova 1987A, we analyzed both the cooling and the heating processes of a possible compact star based on the upper limit of observational X-ray luminosity. From the cooling process we found that a solid quark-cluster ... More
An annular gap acceleration model for $γ$-ray emission of pulsarsApr 28 2007If the binding energy of the pulsar's surface is not so high (the case of a neutron star), both the negative and positive charges will flow out freely from the surface of the star. The annular free flow model for $\gamma$-ray emission of pulsars is suggested ... More
Counterclockwise magnetic fields in the Norma spiral armMar 29 2002Apr 11 2002Pulsars provide unique probes of the large-scale interstellar magnetic field in the Galactic disk. Up to now, the limited Galactic distribution of the known pulsar population has restricted these investigations to within a few kiloparsec of the Sun. The ... More
The inner annular Gap for pulsar radiation: gamma-ray and radio emissionMar 17 2004The inner annular gap (IAG), a new type of inner gap whose magnetic field lines intersect the null charge surface (NCS), is proposed to explain $\gamma$-ray and radio emission from pulsars. The IAG can be an important source for high-energy particles. ... More
Possible re-acceleration regions above the inner gap and pulsar gamma-ray emissionNov 16 1999We propose that the violent breakdown of the Ruderman-Sutherland type vacuum gap above the pulsar polar cap region may produce copious primary particles and make the charge density above the gap in excess of the Goldreich-Julian density. Such an excess ... More
An inverse Compton scattering (ICS) model of pulsar emission: III. polarizationNov 15 1999Qiao and his collaborators recently proposed an inverse Compton Scattering (ICS) model to explain radio emission of pulsars. In this paper, we investigate the polarization properties of pulsar emission in the model. First of all, using the lower frequency ... More
Two possible approaches to form sub-millisecond pulsarsMar 10 2008Nov 20 2008Pulsars have been recognized as normal neutron stars or quark stars. Sub-millisecond pulsars, if detected, would play an essential and important role in distinguishing quark stars from neutron stars. A key question is how sub-millisecond pulsars could ... More
Radio and gamma-ray emissions from pulsars: possible observational testsSep 19 2007Many models for the pulsar radio and $\gamma$-ray emissions have been developed. The tests for these models using observational data are very important. Tests for the pulsar radio emission models using frequency-altitude relation are presented in this ... More
Reply to the Comment on 'Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3'Sep 23 2016Nov 02 2016Reply to the Comment [arXiv:1609.04476] on a recent work in PRL [Phys. Rev. Lett. 116, 036601 (2016), arXiv:1511.02994v2].
Correlation between local structure and dynamic heterogeneity in a metallic glass-forming liquidOct 15 2015Dynamic heterogeneity as one of the most important properties in supercooled liquids has been found for several decades. However, its structural origin remains open for many systems. Here, we propose a new structural parameter to characterize local atomic ... More