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Results for "Hsiao-Wen Chen"

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The Nature of Damped Ly-alpha Absorbing Galaxies at z<=1--A Photometric Redshift Survey of Damped Ly-alpha AbsorbersAug 11 2003We study the nature of damped Lya absorption (DLA) systems at z<=1 using a sample of 11 DLA galaxies, for which accurate redshift measurements are available. We demonstrate that the precision of photometric redshifts is sufficient for identifying DLA ... More
The Baryon Content of Dark Matter Halos: Empirical Constraints from MgII AbsorbersJan 14 2008Jul 08 2008We have initiated a survey of MgII 2796, 2803 absorbers near known galaxies at projected distances rho<~100 h^-1 kpc to a background QSO, in order to constrain the extent and covering fraction of Mg^+ ions around galaxies of different luminosity and mass. ... More
Escape of Ionizing Radiation from High Redshift GalaxiesJul 06 2007We model the escape of ionizing radiation from high-redshift galaxies using high-resolution Adaptive Mesh Refinement N-body + hydrodynamics simulations. Our simulations include time-dependent and spatially-resolved transfer of ionizing radiation in three ... More
The Origin of \lya Absorption Systems at $z>1$---Implications from the Hubble Deep FieldDec 07 1999The Hubble Deep Field images have provided us with a unique chance to relate statistical properties of high-redshift galaxies to statistical properties of \lya absorption systems. Combining an {\em empirical} measure of the galaxy surface density versus ... More
Photometric/Spectroscopic Redshift Identification of Faint Galaxies in STIS Slitless Spectroscopy ObservationsJul 01 1999We present a new spectrum extraction technique which employs optimal weights for the spectral extraction, deblends the overlapping spectra, determines the precise sky background, and takes into account correlations between errors correctly for STIS slitless ... More
The Unusual Spectral Energy Distribution of a Galaxy Previously Reported to be at Redshift 6.68Nov 30 2000Observations of distant galaxies are important both for understanding how galaxies form and for probing the physical conditions of the universe at the earliest epochs. It is, however, extremely difficult to identify galaxies at redshift z>5, because these ... More
Galaxies at Redshifts z > 5Sep 24 1998Here we describe our attempts to establish statistically complete samples of very high redshift galaxies by obtaining photometric redshifts of galaxies in Medium Deep Survey (MDS) fields and photometric and spectroscopic redshifts of galaxies in very ... More
Star Formation from DLA Gas in the Outskirts of Lyman Break Galaxies at z~3Nov 29 2010May 24 2011We present evidence for spatially extended low surface brightness emission around Lyman break galaxies (LBGs) in the V band image of the Hubble Ultra Deep Field, corresponding to the z~3 rest-frame FUV light, which is a sensitive measure of star formation ... More
ALMA Submillimeter Continuum Imaging of the Host Galaxies of GRB021004 and GRB080607Nov 12 2012We report 345 GHz continuum observations of the host galaxies of gamma-ray bursts (GRBs) 021004 and 080607 at z>2 using the Atacama Large Millimeter/Submillimeter Array (ALMA) in Cycle 0. Of the two bursts, GRB021004 is one of the few GRBs that originates ... More
Probing IGM accretion onto faint Lyα emitters at z~2.8Mar 22 2019(abridged) Observing the signature of accretion from the intergalactic medium (IGM) onto galaxies at z~3 requires the detection of faint (L<<L*) galaxies embedded in a filamentary matrix of low-density, metal-poor gas coherent over hundreds of kpc. We ... More
Characterizing the Chemically-Enriched Circumgalactic Medium of ~38000 Luminous Red Galaxies in SDSS DR12Oct 05 2015We report a definitive detection of chemically-enriched cool gas around massive, quiescent galaxies at z~0.4-0.7. The result is based on a survey of 37621 luminous red galaxy (LRG)-QSO pairs in SDSS DR12 with projected distance d<500 kpc. The LRGs are ... More
The HST/ACS Grism Parallel Survey: II. First Results and a Catalog of Faint Emission-Line Galaxies at z < 1.6Mar 28 2005We present the first results from the HST/ACS Grism Parallel Survey, a large program obtaining deep, slitless ACS grism spectroscopy of high-latitude HST parallel fields. We report on 11 high Galactic latitude fields here, each with grism integration ... More
Warm Gas in the Virgo Cluster: I. Distribution of Lya AbsorbersApr 27 2012Jun 12 2012The first systematic study of the warm gas (T=10^4-5 K) distribution across a galaxy cluster is presented using multiple background QSOs to the Virgo Cluster. We detect 25 Lya absorbers (N_HI = 10^13.1-15.4 cm^-2) in the Virgo velocity range toward 9 ... More
Missing Molecular Hydrogen and the Physical Conditions of GRB Host GalaxiesMar 26 2007We examine the abundance of molecular hydrogen (H2) in the spectra of gamma ray burst afterglows (GRBs). In nearby galaxies H2 traces the cold neutral medium (CNM) and dense molecular star-forming interstellar gas. Though H2 is detected in at least half ... More
On the Nature of Velocity Fields in High z GalaxiesMar 27 2007We analyze the gas kinematics of damped Lya systems (DLAs) hosting high z gamma-ray bursts (GRBs) and those toward quasars (QSO-DLAs) focusing on threestatistics: (1) dv, the velocity interval encompassing 90% of the totaloptical depth, (2,3) Wsi and ... More
Temporal Variation in Excited Fe^+ Near a GRB AfterglowJun 20 2006Excited Si^+ and Fe^+ species are routinely observed in the host environment of gamma-ray burst (GRB) afterglows, but are not commonly seen in other extragalactic locations. Their presence signals unusual properties in the gaseous environment of these ... More
Photometry and Photometric Redshifts of Faint Galaxies in the Hubble Deep Field South NICMOS FieldMar 22 2000We present a catalog of photometry and photometric redshifts of 335 faint objects in the HDF-S NICMOS field. The analysis is based on (1) infrared images obtained with the Hubble Space Telescope (HST) using the Near Infrared Camera and Multi-Object Spectrograph ... More
On the absence of Wind Signatures in GRB Afterglow Spectra: Constraints on the Wolf-Rayet Winds of GRB ProgenitorsNov 02 2006Apr 10 2007We investigate available constraints on the circumstellar medium (CSM) around long-duration gamma-ray burst (GRB) progenitors from afterglow spectra. We first establish a statistical sample of five GRB afterglow spectra that have been collected and analyzed ... More
Casting light on the 'anomalous' statistics of Mg II absorbers toward Gamma-Ray Burst afterglows: the incidence of weak systemsMay 22 2009Oct 20 2009We revisit echelle spectra (spectral resolution R ~ 40000) of 8 Gamma-Ray Burst afterglows to obtain the incidence (dN/dz) of weak intervening Mg II systems at a mean redshift of <z> = 1.5. We show that dN/dz of systems having restframe equivalent widths ... More
High Metallicity, Photoionised Gas in Intergalactic Large-Scale FilamentsDec 06 2005Aug 21 2006We present high-resolution UV spectra of absorption-line systems toward the low-z QSO HS0624+6907 (z=0.3700). Coupled with spectroscopic galaxy redshifts, we find that many of these absorbers are integalactic gas clouds distributed within large-scale ... More
Characterizing Circumgalactic Gas around Massive Ellipticals at z~0.4 - II. Physical Properties and Elemental AbundancesSep 13 2018Jan 14 2019We present a systematic investigation of the circumgalactic medium (CGM) within projected distances d<160 kpc of luminous red galaxies (LRGs). The sample comprises 16 intermediate-redshift (z=0.21-0.55) LRGs of stellar mass M_star>1e11 M_sun. Combining ... More
Damped Lyman-alpha Absorption Associated with an Early-Type Galaxy at Redshift z = 0.16377Jul 14 1997We report new HST and ground-based observations of a damped Lyman-alpha absorption system toward the QSO 0850+4400. The redshift of the absorption system is z = 0.163770 and the neutral hydrogen column density of the absorption system is log N = 19.81 ... More
Characterizing Circumgalactic Gas around Massive Ellipticals at z ~ 0.4 I. Initial ResultsMay 18 2018Jul 30 2018We present a new Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) absorption-line survey to study halo gas around 16 luminous red galaxies (LRGs) at z=0.21-0.55. The LRGs are selected uniformly with stellar mass Mstar>1e11 Msun and no prior ... More
Characterizing circumgalactic gas around massive ellipticals at z~0.4 III. The galactic environment of a chemically-pristine Lyman limit absorberJan 14 2019This paper presents a study of the galactic environment of a chemically-pristine (<0.6% solar metallicity) Lyman Limit system (LLS) discovered along the sightline toward QSO SDSSJ135726.27+043541.4 (zQSO=1.233) at projected distance d=126 physical kpc ... More
The Host Galaxy of GRB 031203: Implications of its low metallicity, low redshift, and starburst natureFeb 03 2004Apr 20 2004We present Keck/NIRSPEC near-IR images and Magellan/IMACS optical spectroscopy of the host galaxy of GRB 031203. The host is an actively star-forming galaxy at z=0.1055 +/- 0.0001. This is the lowest redshift GRB to-date, aside from GRB 980425. From the ... More
Scrambling Code Planning in TD-SCDMA SystemsMar 25 2013Mar 30 2013This paper has been withdrawn by the author due to a crucial sign error in equation 2.
Reduction of Feynman Integrals in Parametric RepresentationFeb 27 2019In this paper, we propose a new approach to reduce Feynman integrals. Instead of traditional integration-by-part (IBP) identities, identities between Feynman integrals in the parametric representation are constructed. This method has several advantages ... More
Reduction of Feynman Integrals in Parametric RepresentationFeb 27 2019Mar 02 2019In this paper, we propose a new approach to reduce Feynman integrals. Instead of traditional integration-by-part (IBP) identities, identities between Feynman integrals in the parametric representation are constructed. This method has several advantages ... More
Connecting Mirror Symmetry in 3d and 2d via LocalizationDec 09 2013We explicitly apply localization results to study the interpolation between three and two dimensional mirror symmetry for Abelian gauge theories with four supercharges. We first use the ellipsoid S_b^3 partition functions to verify the mirror symmetry ... More
The Circumgalactic Medium in Massive HalosDec 02 2016This chapter presents a review of the current state of knowledge on the cool (T ~ 1e4 K) halo gas content around massive galaxies at z ~ 0.2-2. Over the last decade, significant progress has been made in characterizing the cool circumgalactic gas in massive ... More
Galaxy and Quasar Fueling Caught in the Act from the Intragroup to the Interstellar MediumNov 26 2018We report the discovery of six spatially extended (10-100 kpc) line-emitting nebulae in the z=0.57 galaxy group hosting PKS0405-123, one of the most luminous quasars at z<1. The discovery is enabled by the Multi Unit Spectroscopic Explorer (MUSE) and ... More
When do early-type galaxies form?Nov 10 2006We have used the Hubble Space Telescope's Advanced Camera for Surveys to measure the mass density function of morphologically selected early-type galaxies in the Gemini Deep Deep Survey fields, over the redshift range 0.9 < z < 1.6. Our imaging data set ... More
Red Nuggets at z~1.5: Compact passive galaxies and the formation of the Kormendy RelationJul 10 2008Jan 09 2009We present the results of NICMOS imaging of a sample of 16 high mass passively evolving galaxies with 1.3<z<2, taken primarily from the Gemini Deep Deep Survey. Around 80% of galaxies in our sample have spectra dominated by stars with ages >1 Gyr. Our ... More
The Gemini Deep Deep Survey: VIII. When Did Early-type Galaxies Form?Jan 26 2007Jul 16 2007We have used the Hubble Space Telescope's Advanced Camera for Surveys (Ford et al. 2003) to measure the cumulative mass density in morphologically-selected early-type galaxies over the redshift range 0.8 < z < 1.7. Our imaging data set covers four well-separated ... More
Analysis and Practice of Uniquely Decodable One-to-One CodeAug 30 2015In this paper, we consider the so-called uniquely decodable one-to-one code (UDOOC) that is formed by inserting a "comma" indicator, termed the unique word (UW), between consecutive one-to-one codewords for separation. Along this research direction, we ... More
Ab Initio Calculations of Exciton Radiative Lifetimes in Bulk Crystals, Nanostructures and MoleculesJan 25 2019Excitons are bound electron-hole pairs that dominate the optical response of semiconductors and insulators, especially in materials where the Coulomb interaction is weakly screened. Light absorption (including excitonic effects) has been studied extensively ... More
N-barrier maximum principle for degenerate elliptic systems and its applicationSep 04 2016In this paper, we prove the N-barrier maximum principle, which extends the result in [5] from linear diffusion equations to nonlinear diffusion equations, for a wide class of degenerate elliptic systems of porous medium type. The N-barrier maximum principle ... More
Influences of source displacement on the features of subwavelength imaging of a photonic crystal slabDec 05 2010Dec 07 2010In this paper we study the characteristics of subwavelength imaging of a photonic crystal (PhC) superlens under the influence of source displacement. For square- and triangular-lattice photonic crystal lenses, we investigate the influence of changing ... More
Fast Cycle Frequency Domain Feature Detection for Cognitive Radio SystemsMar 06 2009In cognitive radio systems, one of the main requirements is to detect the presence of the primary users' transmission, especially in weak signal cases. Cyclostationary detection is always used to solve weak signal detection, however, the computational ... More
HorizonNet: Learning Room Layout with 1D Representation and Pano Stretch Data AugmentationJan 12 2019We present a new approach to the problem of estimating 3D room layout from a single panoramic image. We represent room layout as three 1D vectors that encode, at each image column, the boundary positions of floor-wall and ceiling-wall, and the existence ... More
Raman Gray Molasses Cooling of Cesium Atoms on the D2 LineJul 16 2018We present a systematic study on the Raman gray molasses cooling (RGMC) of cesium atoms on the $D_2$ transition. Due to the large splitting in the excited hyperfine transitions of cesium $D_2$ line, it is relatively simple to implement the RGMC with suitable ... More
Discovery of Massive Evolved Galaxies at z > 3 in the Hubble Ultra Deep FieldMay 24 2004Jul 23 2004We have identified six early-type galaxies at z>2.8 in the central 5.76 arcmin^2 Hubble Ultra Deep Field NICMOS region based on a pronounced broad-band discontinuity between the NICMOS F110W and F160W bandpasses. These galaxies have red observed optical ... More
On the Observed W_MgII--L_[OII] Correlation in SDSS QSO SpectraOct 14 2011This paper investigates the effect of differential aperture loss with SDSS fibers and examines whether such selection bias would result in the observed correlation between rest-frame absorption equivalent width of MgII absorbers, Wr(2796), and mean associated ... More
Symmetry energy systematics and its high density behaviorJun 30 2015We explore the systematics of the density dependence of nuclear matter symmetry energy in the ambit of microscopic calculations with various energy density functionals, and find that the symmetry energy from subsaturation density to supra-saturation density ... More
Can angular momentum loss cause the period change of NN Ser?Apr 15 2009NN Ser is a non mass-transferring pre-cataclysmic variable containing a white dwarf with a mass of $\sim 0.5 M_{\odot}$ and an M dwarf secondary star with a mass of $\sim 0.2 M_{\odot}$. Based on the data detected by the high-speed CCD camera ULTRACAM, ... More
An evolutionary channel towards the accreting millisecond pulsar SAX J1808.4-3658Oct 21 2016Recent timing analysis reveals that the orbital period of the first discovered accreting millisecond pulsar SAX J1808.4-3658 is increasing at a rate $\dot{P}_{\rm orb}=(3.89\pm0.15)\times 10^{-12}~\rm s\,s^{-1}$, which is at least one order of magnitude ... More
Constraining the dipolar magnetic field of M82 X-2 by the accretion modelSep 19 2016Oct 21 2016Recently, ultraluminous X-ray source (ULX) M82 X-2 has been identified to be an accreting neutron star, which has a $P=1.37$ s spin period, and is spinning up at a rate $\dot{P}=-2.0\times 10^{-10}~\rm s\,s^{-1}$. Interestingly, its isotropic X-ray luminosity ... More
An Autoencoder-based Learned Image Compressor: Description of Challenge Proposal by NCTUFeb 20 2019We propose a lossy image compression system using the deep-learning autoencoder structure to participate in the Challenge on Learned Image Compression (CLIC) 2018. Our autoencoder uses the residual blocks with skip connections to reduce the correlation ... More
On thin carpets for doubling measuresFeb 05 2015We study subsets of $\R^{d}$ which are thin for doubling measures or isotropic doubling measures. We show that any subset of $\R^{d}$ with Hausdorff dimension less than or equal to $d-1$ is thin for isotropic doubling measures. We also prove that a self-affine ... More
High braking index pulsar PSR J1640-4631: low-mass neutron star with a large inclination angle?Jul 25 2016Recent timing observation constrained the braking index of the X-ray pulsar PSR J1640-4631 to be $n=3.15\pm0.03$, which is the highest value of all pulsars with measured braking indices so far. In this Letter, we investigate whether pulsar braking by ... More
The symmetry energy in nucleon and quark matterAug 15 2017The symmetry energy characterizes the isospin dependent part of the equation of state of isospin asymmetric strong interaction matter and it plays a critical role in many issues of nuclear physics and astrophysics. In this talk, we briefly review the ... More
Classical and Quantum Szilard Engine under Generalized Uncertainty Principle EffectJul 10 2016We studied the Szilard engine under the effect of generalized uncertainty principle (GUP). In the classical Szilard engine, the work done by the engine is reduced by the GUP effect via a modified ideal gas law. In the quantum Szilard engine, the correction ... More
Cold dilute nuclear matter with $α$-particle condensation in a generalized nonlinear relativistic mean-field modelMar 11 2019We explore the thermodynamic properties of homogeneous cold nuclear matter including nucleons and $\alpha$-particle condensation at low densities by using a generalized nonlinear relativistic mean-field (gNL-RMF) model. In the gNL-RMF model, the $\alpha$-particle ... More
Millimeter-Wave Propagation Modeling and MeasurementApr 05 2018Millimeter wave (mmWave) communication is one of the most promising technologies in fifth generation (5G) mobile networks due to its access to a large amount of available spectrum resources. Despite the theoretical potential of a high data rate, there ... More
Low density nuclear matter with light clusters in a generalized nonlinear relativistic mean-field modelMay 01 2017Jun 16 2017We systematically investigate the thermodynamic properties of homogeneous nuclear matter with light clusters at low densities and finite temperatures using a generalized nonlinear relativistic mean-field (gNL-RMF) model, in which light clusters up to ... More
On the additive complexity of a Thue-Morse like sequenceFeb 10 2018Jul 13 2018In this paper, we study the additive complexity $\rho^{+}_{\mathbf{t}}(n)$ of a Thue-Morse like sequence $\mathbf{t}=\sigma^{\infty}(0)$ with the morphism $\sigma: 0\to 01, 1\to 12, 2\to 20$. We show that $\rho^{+}_{\mathbf{t}}(n)=2\lfloor\log_2(n)\rfloor+3$ ... More
Extended Skyrme interactions for nuclear matter, finite nuclei and neutron starsOct 21 2015Dec 15 2016Recent progress in theory, experiment and observation challenges the mean field models using the conventional Skyrme interaction, suggesting that the extension of the conventional Skyrme interaction is necessary. In this work, by fitting the experimental ... More
Probing the IGM-Galaxy Connection at z < 0.5 I: A Galaxy Survey in QSO Fields and a Galaxy-Absorber Cross-Correlation StudyJun 17 2009(Abridged) We present an imaging and spectroscopic survey of galaxies in fields around QSOs HE0226-4110, PKS0405-123, and PG1216+069. The fields are selected to have ultraviolet echelle spectra available, which uncover 195 Lya absorbers and 13 OVI absorbers ... More
On the Halo Occupation of Dark BaryonsSep 10 2007Jan 02 2008We introduce a new technique that adopts the halo occupation framework for understanding the origin of QSO absorption-line systems. Our initial study focuses specifically on MgII absorbers. We construct a model of the gaseous content in which the absorption ... More
Mining Circumgalactic Baryons in the Low-Redshift UniverseFeb 14 2014Sep 11 2014(Abridged) This paper presents an absorption-line study of the multiphase circumgalactic medium (CGM) based on observations of Lya, CII, CIV, SiII, SiIII, and SiIV absorption transitions in the vicinities of 195 galaxies at redshift z<0.176. The galaxy ... More
The Galactic Environment of the NeVIII Absorber toward HE0226-4110May 08 2009We report the discovery of a small galaxy system in the vicinity of the NeVIII absorber at z=0.20701 toward HE0226-4110. The galaxy system consists of two 0.25 L* disk galaxies and a 0.05 L* galaxy all within \Delta v < 300 km/s and rho< 200 h^{-1} physical ... More
GRB 090426: The Environment of a Rest-Frame 0.35-second Gamma-Ray Burst at Redshift z=2.609Jul 09 2009We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst with an observed duration of <2 s. With a rest-frame burst duration of T_90z = 0.35 s and ... More
The Origin of a Chemically Enriched lya Absorption System at z=0.167Aug 31 2000We present the first detailed analysis of the chemical abundances, ionization state, and origin of a partial Lyman limit system (N(\hI) ~ 10^{16} \cmjj) at low redshift (z=0.167 towards PKS0405-1219). Two galaxies at ~ 70 h^{-1} kpc projected distance ... More
Searching for Low Surface-brightness Galaxies in the Hubble Ultra Deep Field: Implications for the Star Formation Efficiency in Neutral Gas at z ~ 3Aug 01 2006(Abridged) The Kennicutt--Schmidt law relates the face-on star formation rate (SFR) per unit area with the face-on gaseous column density in nearby galaxies. Applying this relation to damped Lya absorption systems (DLAs) of neutral hydrogen column density ... More
Red Nuggets at High Redshift: Structural Evolution of Quiescent Galaxies Over 10 Gyr of Cosmic HistoryAug 02 2011We present an analysis of the size growth seen in early-type galaxies over 10 Gyr of cosmic time. Our analysis is based on a homogeneous synthesis of published data from 17 spectroscopic surveys observed at similar spatial resolution, augmented by new ... More
The Star Formation History of Luminous Red Galaxies Hosting MgII AbsorbersAug 19 2011We present a spectroscopic sample of z \approx 0.5 luminous red galaxies (LRGs) that are located within physical projected distances \rho \leq 350 kpc/h of a QSO sightline. Of the 37 LRGs in our sample, eight have associated MgII absorbers with rest-frame ... More
Empirical Constraints of Super-Galactic Winds at z >= 0.5May 17 2012(Abridged) Under the hypothesis that MgII absorbers found near the minor axis of a galaxy originate in the cool phase of winds, we carry out a study to constrain the properties of large-scale outflows at redshift z >= 0.5 based on the observed relative ... More
On the Redshift Evolution of MgII Absorption SystemsAug 25 2009Sep 14 2009We use a halo occupation approach to connect MgII absorbers to dark matter halos as a function of redshift. Using the model constructed in Tinker & Chen (2008), we parameterize the conditional probability of an absorber of equivalent width Wr being produced ... More
Geo-Conquesting Based on Graph Analysis for Crowdsourced Metatrails from Mobile SensingFeb 23 2016Dec 28 2016This article investigates graph analysis for intelligent marketing in smart cities, where metatrails are crowdsourced by mobile sensing for marketing strategies. Unlike most works that focused on client sides, this study is intended for market planning, ... More
Effects of the U-boson on the inner edge of neutron star crustsNov 03 2011Mar 24 2012We explore effects of the light vector $U$-boson, which is weakly coupled to nucleons, on the transition density $\rho_{t}$ and pressure $P_{t}$ at the inner edge separating the liquid core from the solid crust of neutron stars. Three methods, i.e., the ... More
Electric Dipole Polarizability in $^{208}$Pb as a Probe of the Symmetry Energy and Neutron Matter around $ρ_0/3$Apr 05 2015Aug 21 2015It is currently a big challenge to accurately determine the symmetry energy $E_{\text{sym}}(\rho)$ and the pure neutron matter equation of state $E_{\text{PNM}}(\rho)$, even their values around saturation density $\rho_0 $. We find that the electric dipole ... More
Kummer theory of division points over Drinfeld modules of rank oneJul 19 1999In this paper a Kummer theory of division points over rank one Drinfeld A=Fq[T]-modules defined over global function fields was given. The results are in complete analogy with the classical Kummer theory of division points over the multiplicative algebraic ... More
Evolution of intermediate-mass X-ray binaries driven by magnetic braking of Ap/Bp stars: I. ultracompact X-ray binariesAug 06 2016It is generally believed that Ultracompact X-ray binaries (UCXBs) evolved from binaries consisting of a neutron star accreting from a low-mass white dwarf or helium star where mass transfer is driven by gravitational radiation. However, the standard white-dwarf ... More
Isospin splitting of nucleon effective mass from giant resonances in $^{208}$PbJul 16 2015Mar 14 2016Based on mean field calculations with Skyrme interactions, we extract a constraint on the isovector effective mass in nuclear matter at saturation density $\rho_0$, i.e., $m_{v}^{\ast}(\rho_0)=(0.77\pm0.03) m$ by combining the experimental data of the ... More
D-Sempre: Learning Deep Semantic-Preserving Embeddings for User interests-Social Contents ModelingFeb 18 2018Exponential growth of social media consumption demands effective user interests-social contents modeling for more personalized recommendation and social media summarization. However, due to the heterogeneous nature of social contents, traditional approaches ... More
Industrial Robot Trajectory Tracking Using Multi-Layer Neural Networks Trained by Iterative Learning ControlFeb 28 2019Mar 04 2019Fast and precise robot motion is needed in certain applications such as electronic manufacturing, additive manufacturing and assembly. Most industrial robot motion controllers allow externally commanded motion profile, but the trajectory tracking performance ... More
Rapid orbital decay in detached binaries: evidence for circumbinary disksFeb 21 2017Some short-period, detached binary systems have recently been reported to experience very rapid orbital decay, much faster than is expected from the angular-momentum loss caused by gravitational radiation alone. As these systems contain fully convective ... More
Fountain Uncorrectable Sets and Finite-Length AnalysisFeb 01 2015Decoding performance of Fountain codes for the binary erasure channel (BEC) depends on two aspects. One is the essential code structure, on which stopping set analysis operates. The other is the effect from the channel characteristic, which is difficult ... More
All-optical controlled phase gate in quantum dot moleculesFeb 26 2014May 19 2015We propose a two-qubit optically controlled phase gate in quantum dot molecules via adiabatic passage and hole tunneling. Our proposal combines the merits of the current generation of vertically stacked self-assembled InAs quantum dots and adiabatic passage. ... More
Next-to-Leading Order Ab Initio Electron-Phonon ScatteringMar 19 2019Electron-phonon (e-ph) interactions are usually treated in the lowest order of perturbation theory. Here we derive next-to-leading order e-ph interactions, and compute from first principles the associated two-phonon e-ph scattering rates. The derivation ... More
Minkowski Sum Selection and FindingSep 06 2008For the \textsc{Minkowski Sum Selection} problem with linear objective functions, we obtain the following results: (1) optimal $O(n\log n)$ time algorithms for $\lambda=1$; (2) $O(n\log^2 n)$ time deterministic algorithms and expected $O(n\log n)$ time ... More
Productions of $K^*_0(1430)$ and $K_{1}$ in B decaysJul 01 2005Sep 07 2005We study the productions of p-wave mesons $K^*_{0}(1430)$, $K_{1}(1270)$ and $K_{1}(1400)$ in B decays. By the generalized factorization approach, we find that the branching ratios of $B\to K^*_{0}(1430) \phi$ are similar to those of $B\to K \phi$ while ... More
Empirical information on nuclear matter fourth-order symmetry energy from an extended nuclear mass formulaMay 15 2017Aug 05 2017We establish a relation between the equation of state (EOS) of nuclear matter and the fourth-order symmetry energy $a_{\rm{sym,4}}(A)$ of finite nuclei in a semi-empirical nuclear mass formula by self-consistently considering the bulk, surface and Coulomb ... More
Strange Quark Stars as Probe of Dark MatterMar 24 2016Aug 14 2016We demonstrate that the observation of old strange quark stars (SQSs) can set important limits on the scattering cross sections $\sigma_q$ between the light quarks and the non-interacting scalar dark matter (DM). By analyzing a set of 1403 of solitary ... More
Pairing effects on neutron matter equation of state and symmetry energy at subsatruation densitiesMar 07 2019Within the framework of BCS theory and Skyrme-Hartree-Fock model, we employ various microscopic pairing gaps and effective pairing interactions to study pairing effects on the equation of state (EOS) of neutron matter and the symmetry energy at subsaturation ... More
Positioning the neutron drip line and the r-process paths in the nuclear landscapeOct 09 2014Sep 09 2015Exploring nucleon drip lines and astrophysical rapid neutron capture process (r-process) paths in the nuclear landscape is extremely challenging in nuclear physics and astrophysics. While various models predict similar proton drip line, their predictions ... More
Robust Inference via Multiplier BootstrapMar 18 2019This paper investigates the theoretical underpinnings of two fundamental statistical inference problems, the construction of confidence sets and large-scale simultaneous hypothesis testing, in the presence of heavy-tailed data. With heavy-tailed observation ... More
Similarity model for corner roll in turbulent Rayleigh-Benard convectionAug 26 2018Sep 02 2018The corner roll (CR) in the Rayleigh-B\'{e}nard (RB) convection accounts for the behaviors of heat transport and convection flow at the corner. Streamlines of the three-dimensional direct numerical simulations for $10^8<Ra<5\times10^9$ show that CR presents ... More
Decapitation via Digital Epidemics: A Bio-Inspired Transmissive AttackMar 02 2016The evolution of communication technology and the proliferation of electronic devices have rendered adversaries powerful means for targeted attacks via all sorts of accessible resources. In particular, owing to the intrinsic interdependency and ubiquitous ... More
Fe Doped Magnetic Nanodiamonds Made by Ion Implantation as Contrast Agent for MRINov 10 2017We report in this paper a new MRI contrast agent based on magnetic nanodiamonds fabricated by Fe ion implantation. The Fe atoms that are implanted into the nanodiamonds are not in direct contact with the outside world, enabling this new contrast agent ... More
Weighted Network Models Based on Local and Global RulesMay 17 2005We will introduce two evolving models that characterize weighted complex networks. Though the microscopic dynamics are different, these models are found to bear a similar mathematical framework, and hence exhibit some common behaviors, for example, the ... More
Generalized BBV Models for Weighted Complex NetworksMay 17 2005We will introduce two evolving models that characterize weighted complex networks. Though the microscopic dynamics are different, these models are found to bear a similar mathematical framework, and hence exhibit some common behaviors, for example, the ... More
Giant Magnons and Spiky Strings on S^3 with B-fieldSep 18 2008Sep 26 2008We study solutions for a rotating string on S^3 with a background NS-NS B-field and show the existence of spiky string and giant magnon as two limiting solutions. We make a connection to the sine-Gordon model via the Polyakov worldsheet action and study ... More
Charged Kaon multiplicities of Semi-inclusive DIS off the deuteron targetJul 17 2018We investigate the results of the charged kaon multiplicities off the deuteron target from HERMES and COMPASS experiments. The discrepancy of the two data sets cannot be explained by different $Q^2$ values. Furthermore we examine the empirical parametrization ... More
Mixed electroweak-QCD corrections to $e^+e^-\to μ^+μ^- H$ at CEPC with finite-width effectNov 13 2018Nov 22 2018The associated production of Higgs boson with a muon pair, $e^+e^-\to \mu^+\mu^- H$, is one of the golden channels to pin down the properties of the Higgs boson in the prospective Higgs factories exemplified by \textsf{CEPC}. The projected accuracy of ... More
$T$-odd quark pair production and decay at $γγ$ collider in the littlest Higgs model with $T$ parity in next-to-leading order QCDDec 07 2015We calculate the complete next-to-leading order (NLO) QCD corrections to the $T$-odd mirror quark pair ($q_-\bar q_-=u_-\bar u_-$, $c_-\bar c_-$, $d_-\bar d_-$, $s_-\bar s_-$) production in the littlest Higgs model with $T$-parity (LHT) at a high energy ... More
Self-Supervised Monocular Image Depth Learning and Confidence EstimationMar 14 2018Convolutional Neural Networks (CNNs) need large amounts of data with ground truth annotation, which is a challenging problem that has limited the development and fast deployment of CNNs for many computer vision tasks. We propose a novel framework for ... More
Semantic Augmented Reality Environment with Material-Aware Physical InteractionsAug 03 2017Mar 16 2018In Augmented Reality (AR) environment, realistic interactions between the virtual and real objects play a crucial role in user experience. Much of recent advances in AR has been largely focused on developing geometry-aware environment, but little has ... More
On the $k$-abelian complexity of the Cantor sequenceMar 12 2017In this paper, we prove that for every integer $k \geq 1$, the $k$-abelian complexity function of the Cantor sequence $\mathbf{c} = 101000101\cdots$ is a $3$-regular sequence.
Nuclear matter fourth-order symmetry energy in non-relativistic mean-field modelsAug 07 2017Nov 07 2017Based on systematic analyses of several popular non-relativistic energy density functionals with mean-field approximation, we estimate the value of the fourth-order symmetry energy $E_{\text{sym,4}}(\rho)$ at nuclear normal density $\rho_0$ and its density ... More