Non-Markovian entanglement dynamics between two coupled qubits in the same environment (2009)
Cui, Wei, Xi, Zairong, Pan, Yu
We analyze the dynamics of the entanglement in two independent non-Markovian channels. In particular, we focus on the entanglement dynamics as a function of the initial states and the channel...
Optimal Decoherence Control in non-Markovian Open, Dissipative Quantum Systems (2009)
Cui, Wei, Xi, Zairong, Pan, Yu
We investigate the optimal control problem for non-Markovian open, dissipative quantum system. Optimal control using Pontryagin maximum principle is specifically derived. The influences of Ohmic...
The entanglement dynamics of the bipartite quantum system: toward entanglement sudden death (2009)
Cui, Wei, Xi, Zairong, Pan, Yu
We investigate the entanglement dynamics of bipartite quantum system between two qubits with the dissipative environment. We begin with the standard Markovian master equation in the Lindblad form and...
Bounds on probability of transformations between multi-partite pure states (2009)
Cui, Wei, Helwig, Wolfram, Lo, Hoi-Kwong
For a tripartite pure state of three qubits, it is well known that there are two inequivalent classes of genuine tripartite entanglement, namely the GHZ-class and the W-class. Any two states within...
TeV Gamma Ray Astronomy (2009)
The field of ground-based gamma ray astronomy has enjoyed rapid growth in recent years. As an increasing number of sources are detected at TeV energies, the field has matured and become a viable...
Role of Acylation Stimulating Protein and C5L2 receptor in regulating energy homeostasis (2009)
Currently, it has been well accepted that obesity is a key factor accounting for increasing serious diet-related chronic diseases, such as type II diabetes and cardiovascular diseases. Obesity is a...
New LZW Data Compression Algorithm and Its FPGA Implementation (2008)
Abstract: This paper presents a new LZW data compression algorithm that partitions conventional single large dictionary into a dictionary set that consists of several small address space...
Manuscript revised March, 2007 (2008)
Wei Cui, Huai-kun Xiang, Yong Yao, Jian-wei Liu, Quan Cao
In video compression, eliminating the temporal redundancy is very important. In this paper, the technique of eliminating the temporal redundancy is studied, including the temporal model in MPEG video...
Origin of X-ray Emission from Transient Black Hole Candidates in Quiescence (2008)
Pszota, Gabor, Zhang, Hui, Yuan, Feng, Cui, Wei
We report results from a systematic study of X-ray emission from black hole transients in quiescence. In this state mass accretion is thought to follow the geometry of an outer optically thick,...
Grid Gateway: Message-Passing between Separated Cluster Interconnects * (2008)
Abstract. Geographically distributed computing requires high-performance clusters to be integrated to solve problems in computational Grid. Because cluster interconnect is isolated, its low-level...
Alan M. Levine, Hale Bradt, Wei Cui, J. G. Jernigan, Edward H. Morgan, Ronald Remillard, ...
The all-sky monitor on the Rossi X-Ray Timing Explorer has been monitoring the sky in the 1.5–12 keV band since late February. The instrument consists of three coded-aperture cameras that can be...
Search for Pulsar Wind Nebula Associations of Unidentified TeV Gamma-Ray Sources (2007)
Chang, Chulhoon, Konopelko, Alexander, Cui, Wei
Many of the recently discovered TeV gamma-ray sources are associated with pulsar wind nebulae (PWNe). In fact, they represent the most populous class of Galactic sources at TeV energies. In addition,...
Dramatic Variability of X-ray Absorption Lines in the Black Hole Candidate Cygnus X-1 (2007)
We report results from a 30 ks observation of Cygnus X-1 with the High Energy Transmission Grating Spectrometer (HETGS) on board the {\em Chandra X-ray Observatory}. Numerous absorption lines were...
Modeling Accretion Disk X-ray Continuum of Black Hole Candidates (2007)
We critically examine issues associated with determining the fundamental properties of the black hole and the surrounding accretion disk in an X-ray binary based on modeling the disk X-ray continuum...
On the Radio/X-ray Correlation in Microquasars (2007)
[Context] The broadband spectral energy distribution of microquasars has proven to be a valuable tool for assessing the roles of jets and accretion flows in microquasars, as well as the coupling...
Wei Cui, Shirley X Hu, Zhen-Ya Tang, Ke-Qin Hu
AIM: It is known that cyclooxygenase-2 (COX-2) overexpression is associated with growth of hepatocellular carcinoma (HCC) cells, but its in vivo mechanisms remain to be determined. METHODS: In the...
Stem cell differentiation and expansion for clinical applications of tissue engineering (2007)
Guillot, Pascale V., Cui, Wei, Fisk, Nicholas M., Polak, Julia
This invited review discusses the latest advances stem cell biology, tissue engineering and the transition from bench to bedside. An overview is presented as to which the best cell source might be...
Chandra View of the Unidentified TeV Gamma-ray Source HESS J1804-216 (2006)
Cui, Wei, Konopelko, Alexander
We present high-resolution X-ray images taken with the Chandra X-ray Observatory of the field that contains the unidentified TeV gamma-ray source HESS J1804-216. A total of eleven discrete sources...
TeV Astrophysics, A Review (2006)
In this paper I briefly review recent progress in the field of ground-based gamma ray astrophysics.
Xue, Yongquan, Wu, Xue-Bing, Cui, Wei
We report results from a systematic study of the spectral energy distribution (SED) and spectral evolution of XTE J1550--564 and H 1743--322 in outburst. The jets of both sources have been directly...
X-ray Spectral Variability of TeV Blazars during Rapid Flares (2006)
Xue, Yongquan, Yuan, Feng, Cui, Wei
The spectral energy distribution (SED) of TeV blazars peaks both at keV and TeV energies. The X-ray emission is generally believed to originate in the synchrotron emission from relativistic electrons...
Hot One-Temperature Accretion Flows Revisited (2005)
Yuan, Feng, Taam, Ronald E., Xue, Yongquan, Cui, Wei
The effectiveness of the thermal coupling of ions and electrons in the context of optically thin, hot accretion flows is investigated. In the limit of complete coupling, we focus on the...
X-ray Flares from Markarian 501 (2004)
Motivated by the recent finding of hierarchical X-ray flaring phenomenon in Mrk 421, we conducted a systematic search for X-ray flares from Mrk 501, another well-known TeV blazar, by making use of...
Radio--X-ray Correlation and the "Quiescent State" of Black Hole Sources (2004)
Recently a correlation between the radio and X-ray luminosities is found, $L_{\rm R}\propto L_{\rm X}^{0.7}$, in black hole sources including black hole candidates in our galaxy and active galactic...
News from a Multi-Wavelength Monitoring Campaign on Mrk 421 (2004)
Cui, Wei, Collaboration, For The VERITAS, Team, A Multiwavelength
We conducted a daily monitoring campaign on Mrk 421 in 2003 and 2004 with the Whipple 10 m telescope and the large-area instruments aboard RXTE, simultaneously covering TeV and X-ray energies....
Yuan, Feng, Cui, Wei, Narayan, Ramesh
Multi-wavelength observations of the black hole X-ray binary XTE J1118+480 have offered abundant spectral and timing information about the source, and have thus provided serious challenges to...
X-ray Flaring Activity of Mrk 421 (2004)
We report results from a systematic search for X-ray flares from Mrk 421, using archival data from the Rossi X-ray Timing Explorer (RXTE) satellite. The flares are clearly seen over a wide range of...
Using GPS data to improve microsimulation model / (2004)
Thesis (M. Sc. (Eng))--University of Leeds (Institute for Transport Studies), 2004.
Cessation of X-ray Pulsation of GX 1+4 (2003)
We report results from our weekly monitoring campaign on the X-ray pulsar GX 1+4 with the {\em Rossi X-ray Timing Explorer} satellite. The spin-down trend of GX 1+4 was continuing, with the pulsar...
Wei Cui, Diana Wylie, Samena Aslam, Andres Dinnyes, Tim King, Ian Wilmut, ...
Telomere shortening and lack of telomerase activity have been implicated in cellular senescence in human fibroblasts. Expression of the human telomerase catalytic reverse transcriptase subunit...
Why is it Difficult to Detect a Millisecond Pulsar in Neutron Star X-ray Binaries? (2002)
Titarchuk, Lev, Cui, Wei, Wood, Kent
We explain why it is possible to detect directly X-ray emission from near the surface of the neutron star (NS) in SAX J1808.4-3658 but not in most other low-mass X-ray binaries (LMXBs), with the...
Dynamic VRML downloading and scene construction / (2002)
Thesis (M. Sc. (Comm. Software & Networks)--Nanyang Technological University, School of Electrical and Electronic Engineering, 2002.
A Peculiar Flaring Episode of Cygnus X-1 (2001)
Cui, Wei, Feng, Yuxin, Ertmer, Mark
Recent monitoring of Cyg X-1 with {\em RXTE} revealed a period of intense flaring, which started in October of 2000 and lasted until March of 2001. The source exhibited some quite unusual behaviors...
Discovery of Two Types of X-ray Dips in Cyg X-1 (2001)
We observed Cyg X-1 with {\em RXTE} contiguously over its 5.6-day binary orbit. The source was found to be in the hard state throughout the observation. Many intensity dips were detected in the X-ray...
Evolution of Iron K$_{\alpha}$ Line Emission in the Black Hole Candidate GX 339-4 (2001)
Feng, Y. X., Zhang, S. N., Sun, X., Durouchoux, Ph., Chen, Wan, Cui, Wei
GX 339-4 was regularly monitored with RXTE during a period (in 1999) when its X-ray flux decreased significantly (from 4.2$\times 10^{-10}$ erg cm$^{-2} s^{-1}$ to 7.6$\times 10^{-12}$ erg...
X-ray intensity-hardness correlation in Cyg X-1 (2000)
Wen, Linqing, Cui, Wei, Bradt, Hale V.
Using data from the All-Sky Monitor aboard the Rossi X-ray Timing Explorer (RXTE), we found that the 1.5-12 keV X-ray count rate of Cyg X-1 is, on time scales from 90 seconds to at least 10 days,...
Peculiar Extended X-ray Emission around the "Radio-Loud" Black Hole Candidate 1E1740.7-2942 (2000)
Cui, Wei, Schulz, N. S., Baganoff, F. K., Bautz, M. W., Doty, J. P., Garmire, G. P., ...
We present the discovery of peculiar extended X-ray emission around 1E1740.7-2942, a black hole candidate that is known to produce prominent, persistent radio jets. The data was obtained with the...
Complete RXTE Spectral Observations of the Black Hole X-ray Nova XTE J1550-564 (2000)
Sobczak, Gregory J., McClintock, Jeffrey E., Remillard, Ronald A., Cui, Wei, Levine, Alan M., Morgan, Edward H., ...
We report on the X-ray spectral behavior of the exceptionally bright X-ray nova XTE J1550-564 during its 1998-99 outburst. Our study is based on 209 pointed observations using the PCA and HEXTE...
Discovery of High-Frequency QPOs in Black Hole Candidate XTE J1859+226 (2000)
Cui, Wei, Shrader, C. R., Haswell, C. A., Hynes, R. I.
We report the discovery of quasi-periodic oscillations (QPOs) at roughly 187 Hz and 150 Hz in the X-ray intensity of X-ray nova XTE J1859+226. The source was observed during a recent outburst with...
For all sources in which the phenomenon of kilo-Hertz quasi-periodic oscillation (kHz QPO) is observed, the QPOs disappear abruptly when the inferred mass accretion rate exceeds a certain threshold....
Three-Layered Atmospheric Structure in Accretion Disks Around Stellar-Mass Black Holes (2000)
Zhang, S. N., Cui, Wei, Chen, Wan, Yao, Yangsen, Zhang, Xiaoling, Sun, Xuejun, ...
Modeling of the x-ray spectra of the Galactic superluminal jet sources GRS 1915+105 and GRO J1655-40 reveal a three-layered atmospheric structure in the inner region of their accretion disks. Above...
Phase Lag and Coherence Function of X-ray emission from Black Hole Candidate XTE J1550-564 (2000)
Cui, Wei, Zhang, Shuang Nan, Chen, Wan
We report the results from measuring the phase lag and coherence function of X-ray emission from black hole candidate (BHC) XTE J1550-564. These X-ray temporal properties have been recognized to be...
Sobczak, Gregory J., McClintock, Jeffrey E., Remillard, Ronald A., Cui, Wei, Levine, Alan M., Morgan, Edward H., ...
Utilizing observations obtained with the Rossi X-ray Timing Explorer, we examine correlations between the properties of 0.08-22 Hz variable frequency QPOs and the X-ray spectral parameters for the...
Evidence for Doppler-Shifted Iron Emission Lines in Black Hole Candidate 4U 1630-47 (1999)
Cui, Wei, Chen, Wan, Zhang, S. N.
We report the first detection of a pair of correlated emission lines in the X-ray spectrum of black hole candidate 4U 1630-47 during its 1996 outburst, based on RXTE observations of the source. At...
Phase Lags of QPOs in Microquasar GRS 1915+105 (1999)
I report the discovery of hard X-ray phase lags associated with the famous 67 Hz quasi-periodic oscillation (QPO) in microquasar GRS 1915+105. The QPO is seen on multiple occasions. For this...
X-ray Orbital Modulation of Cygnus X-1 (1999)
Wen, Linqing, Cui, Wei, Levine, Alan M., Bradt, Hale V.
We have analyzed over 2 years of RXTE/ASM data for Cygnus X-1. We have detected the 5.6-day orbital period in Lomb-Scargle periodograms of both light curves and hardness ratios when Cyg X-1 was in...
Strong Aperiodic X-ray Variability and Quasi-Periodic Oscillation in X-ray Nova XTE J1550-564 (1998)
Cui, Wei, Zhang, S. N., Chen, Wan, Morgan, E. H.
We report the discovery of strong aperiodic X-ray variability and quasi-periodic oscillation (QPO) in the X-ray light curves of a new X-ray Nova, XTE J1550-564, and the evolution of the observed...
On Gravitomagnetic Precession and Qpo in Black Hole Candidates (1998)
Cui, Wei, Chen, Wan, Zhang, S. N.
The X-ray observation of black hole candidates provides a valuable tool to probe regions very close to the central black hole, where strong-field relativistic effects become important. Recent studies...
Probing the Structure of Accreting Compact Sources Through X-Ray Time Lags and Spectra (1998)
Hua, Xin-Min, Kazanas, Demosthenes, Cui, Wei
We exhibit, by compiling all data sets we can acquire, that the Fourier frequency dependent hard X-ray lags, first observed in the analysis of aperiodic variability of the light curves of the black...
I review the observed temporal X-ray properties of Galactic black hole candidates and the status of theoretical modeling of these properties. Like spectral X-ray properties, which has so far...
Soft Phase Lags of Pulsed Emission from the Millisecond X-ray Pulsar SAX J1808.4-3658 (1998)
Cui, Wei, Morgan, Edward H., Titarchuk, Lev G.
We report the discovery of phase shifts between X-ray pulses at different energies in the newly discovered millisecond (ms) X-ray pulsar SAX J1808.4-3658. The results show that low-energy pulses lag...
Evolution of AQL X-1 During the Rising Phase of its 1998 Outburst (1998)
Cui, Wei, Barret, Didier, Zhang, S. N., Chen, Wan, Boirin, Laurence, Swank, Jean
We present results from 16 snapshots of Aql X-1 with RXTE during the rising phase of its recent outburst. The observations were carried out at a typical rate of once or twice per day. The source...
Frequency Dependent Lags - A Common Phenomenon of Accreting Sources (1997)
Hua, Xin-Min, Kazanas, Demosthenes, Cui, Wei
The Fourier frequency dependent hard X-ray lag, first discovered from the analysis of aperiodic variability of the light curves of the black hole candidate Cygnus X-1, turns out to be a property...
Evidence for Centrifugal Barrier in X-ray Pulsar GRO J1744-28 (1997)
We present further observational evidence of the effects of a centrifugal barrier in GRO J1744-28, based on continued monitoring of the source with RXTE. For X-ray pulsars, the centrifugal barrier...
Simultaneous ASCA And RXTE Observations of Cygnus X--1 During Its 1996 State Transition (1997)
Cui, Wei, Ebisawa, K., Dotani, T., Kubota, A.
We report results from simultaneous ASCA and RXTE observations of Cyg X-1 when the source made a rare transition from the hard (= low) state to the soft (= high) state in 1996. These observations...
Cygnus X-1: X-ray Emission Mechanism and Geometry (1997)
Cui, Wei, Zhang, S. N., Swank, J. H., Ebisawa, K., Dotani, T.
We summarize recent observations of Cyg X-1 during its 1996 state transition. The results favor an emission geometry with a central optically thin corona surrounded by an optically thick,...
Spectral Transitions in Cyg X-1 and Other Black Hole X-Ray Binaries (1997)
Esin, Ann A., Narayan, Ramesh, Cui, Wei, Grove, J. Eric, Zhang, Shuang-Nan
We show that the model proposed by Esin, McClintock & Narayan (1997) for the low state, intermediate state and high state of the black hole soft X-ray transient, Nova Muscae 1991, is consistent with...
Cygnus X-1: A Spinning Black Hole? (1997)
Cui, Wei, Chen, Wan, Zhang, S. N.
It has been a long-standing puzzle what triggers the spectral transition between the hard and soft states in Cyg X-1. Also, the origin of the frequently observed X-ray flares in the source still...
Evidence for Frame-Dragging Around Spinning Black Holes in X-Ray Binaries (1997)
Cui, Wei, Zhang, S. N., Chen, Wan
In the context of black hole spin in X-ray binaries, we propose that certain type of quasi-period oscillations (QPOs) observed in the light curves of black hole binaries (BHBs) are produced by X-ray...
Modeling the Hard X-Ray Lag and Energy Spectrum of Cyg X-1 (1997)
Hua, Xin-Min, Kazanas, Demosthenes, Cui, Wei
In an effort to model the observed energy spectrum of Cygnus X-1 as well as its hard X-ray lag by Comptonization in inhomogeneous clouds of hot electrons with spherical geometry and various radial...
Rxte Observations of a New X-Ray Transient: GRS 1737-31 (1997)
Cui, Wei, Heindl, W. A., Swank, J. H., Smith, D. M., Morgan, E. H., Remillard, R~., ...
We present the results from RXTE observations of a new X-ray transient, GRS 1737-31, near the Galactic center during an outburst. Over a span of two weeks, the source was seen to vary significantly...
Evidence for "Propeller" Effects In X-ray Pulsars GX 1+4 And GROJ1744-28 (1997)
We present observational evidence for "propeller" effects in two X-ray pulsars, GX 1+4 and GROJ1744-28. Both sources were monitored regularly by the Rossi X-ray Timing Explorer (RXTE) throughout a...
Black Hole Spin in X-Ray Binaries: Observational Consequences (1997)
Zhang, S. N., Cui, Wei, Chen, Wan
We discuss the observational consequences of black hole spin in X-ray binaries within the framework of the standard thin accretion disk model. When compared to theoretical flux distribution from the...
Temporal Properties of Cygnus X-1 During the Spectral Transitions (1997)
Cui, Wei, Zhang, S. N., Focke, W., Swank, J.
We report the results from our timing analysis of 15 RXTE observations of Cygnus X-1 throughout its 1996 spectral transitions. The entire period can be divided into 3 distinct phases: (1) transition...
Genetic and molecular analysis of KLP38B and Kojak /--by Wei Cui. (1997)
Thesis (M.A.)--University of Kansas, Biochemistry, 1997.
Detection of Compact Nuclear X-Ray Emission in NGC 4736 (1996)
Cui, Wei, Feldkun, Dan, Braun, Robert
We report the results from a deep ROSAT PSPC observation of LINER galaxy NGC 4736. Two bright sources are detected, separated by only about 1', with the brighter one coinciding with the center of the...
First Results from the All-Sky Monitor on the Rossi X-ray Timing Explorer (1996)
Levine, Alan M., Bradt, Hale, Cui, Wei, Jernigan, J. G., Morgan, Edward H., Remillard, Ronald, ...
The All-Sky Monitor on the Rossi X-ray Timing Explorer has been monitoring the sky in the 1.5 - 12 keV band since late February. The instrument consists of three coded-aperture cameras which can be...
Diffuse Soft X-ray Emission from Several Nearby Spiral Galaxies (1996)
Cui, Wei, Sanders, Wilton T., McCammon, Dan, Snowden, Steven L., Womble, Donna S.
We observed several nearby face-on spiral galaxies with the ROSAT PSPC to study their 0.1-2.0 keV diffuse emission. After the exclusion of resolved discrete sources, there is unresolved X-ray...
Limits to the 1/4 keV Extragalactic X-ray Background (1996)
Cui, Wei, Sanders, Wilton T., McCammon, Dan, Snowden, Steven L., Womble, Donna S.
We observed several nearby face-on spiral galaxies with the ROSAT PSPC. The apparent deficiency in soft X-ray surface brightness observed at the outer portion of their disks is consistent with the...
Seismic response of non-linear base-isolated shear buildings and their secondary systems / (1995)
Thesis (Ph. D.)--Nanyang Technological University, School of Civil and Structural Engineering, 1995.
Measurement of N2O as a product of the NCO + NO reaction / (1994)
Thesis (M.S.M.E.)--University of Washington, 1994.
Cui, Wei, Morrison, David C., Silverstein, Richard
Viable Escherichia coli and Staphylococcus aureus bacteria elicited markedly different in vitro tumor necrosis factor alpha (TNF-α) responses when placed in coculture with peritoneal murine...
Cui, Wei, Sproul, Lisa R., Gustafson, Susan M., Matthies, Heinrich J.G., Gilbert, Susan P., Hawley, R. S.
Nod, a nonmotile kinesinlike protein, plays a critical role in segregating achiasmate chromosomes during female meiosis. In addition to localizing to oocyte chromosomes, we show that functional...
Nod is a chromokinesin-like protein that plays a critical role in segregating achiasmate chromosomes during female meiosis. The C-terminal half of the Nod protein contains two putative DNA-binding...
Cui, Wei, Morrison, David C., Silverstein, Richard
Viable Escherichia coli and Staphylococcus aureus bacteria elicited markedly different in vitro tumor necrosis factor alpha (TNF-α) responses when placed in coculture with peritoneal murine...
Cui, Wei, Sproul, Lisa R., Gustafson, Susan M., Matthies, Heinrich J.G., Gilbert, Susan P., Hawley, R. S.
Nod, a nonmotile kinesinlike protein, plays a critical role in segregating achiasmate chromosomes during female meiosis. In addition to localizing to oocyte chromosomes, we show that functional...
Nod is a chromokinesin-like protein that plays a critical role in segregating achiasmate chromosomes during female meiosis. The C-terminal half of the Nod protein contains two putative DNA-binding...
Ma, Yupo, Cui, Wei, Yang, Jianchang, Qu, Jun, Di, Chunhui, Amin, Hesham M., ...
SALL4, a human homolog to Drosophila spalt, is a novel zinc finger transcriptional factor essential for development. We cloned SALL4 and its isoforms (SALL4A and SALL4B). Through immunohistochemistry...
Cost-Utility Analysis in China: Differences and Difficulties Compared with Developed Countries
Liu Bao Peng, Chong Qing Tan, Xiao Min Wan, Wei Cui
Cost-utility, Health-policy
Heterokaryon-Based Reprogramming of Human B Lymphocytes for Pluripotency Requires Oct4 but Not Sox2
Pereira, Carlos F., Terranova, Rémi, Ryan, Natalie K., Santos, Joana, Morris, Kelly J., Cui, Wei, ...
Differentiated cells can be reprogrammed through the formation of heterokaryons and hybrid cells when fused with embryonic stem (ES) cells. Here, we provide evidence that conversion of human...
Effects and mechanisms of silibinin on human hepatocellular carcinoma xenografts in nude mice
AIM: To investigate the in vivo effects and mechanisms of silibinin on the growth of hepatocellular carcinoma (HCC) xenografts in nude mice.