W. Liu

Publication List Details

Period

1996 - 2008

Number

82

Co-Authors

Comparison of hyperbolic and constant width simultaneous confidence bands in multiple linear regression under MVCS criterion (2008)

Liu, W., Hayter, A.J., Piegorsch, W.W., Ah-Kine, P.

A simultaneous confidence band provides useful information on the plausible range of the unknown regression model, and different confidence bands can often be constructed for the same regression...

Estimating Speed and Damping in the Stochastic Wave Equation (2008)

Liu, W., Lototsky, S. V.

A parameter estimation problem is considered for a one-dimensional stochastic wave equation driven by additive space-time Gaussian white noise. The estimator is of spectral type and utilizes a finite...

A study of partial F tests for multiple linear regression models (2008)

Jamshidian, M., Jenrich, R., Liu, W.

Partial F tests play a central role in model selections in multiple linear regression models. This paper studies the partial F tests from the view point of simultaneous confidence bands. It first...

Heavy-ion collisions at the LHC-Last call for predictions (2008)

Armesto, N., Borghini, N., Jeon, S., Wiedemann, U. A., Abreu, S., Akkelin, S. V., ...

This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions at the LHC - Last...

Frequency invariant beamforming for two-dimensional and three-dimensional arrays (2007)

Liu, W., Weiss, S., McWhirter, J.G., Proudler, I.K.

A novel method for the design of two-dimensional (2-D) and three-dimensional (3-D)arrays with frequency invariant beam patterns is proposed. By suitable substitu- tions, the beam pattern of a 2-D or...

Performance Analysis of Iteratively Decoded Variable-Length Space-Time Coded Modulation (2007)

Ng, S.X., Liu, W., Wang, J., Tao, M., Hanzo, L

It is demonstrated that iteratively Decoded Variable Length Space Time Coded Modulation (VL-STCM-ID) schemes are capable of simultaneously providing both coding gain as well as multiplexing and...

The second level trigger of the ATLAS experiment at CERN's LHC (2007)

Dos Anjos, A., Abolins, M., Armstrong, S., T. Baines, J., Barisonzi, M., P. Beck, H., ...

The ATLAS trigger reduces the rate of interesting events to be recorded for off-line analysis in three successive levels from 40 MHz to /spl sim/100 kHz, /spl sim/2 kHz and /spl sim/200 Hz. The high...

Easy-to-construct confidence bands for comparing two simple linear regression lines (2007)

Hayter, A.J., Liu, W., Wynn, H.P.

This paper shows how to construct confidence bands for the difference between two simple linear regression lines. These confidence bands provide directly the information on the magnitude of the...

Joint Channel Prediction Aided Differentially Encoded TTCM and BICMID Assisted Eigen-Beamforming (2007)

Liu, W., Ng, S. X., Yang, L-L., Hanzo, L.

Eigen-beamforming is capable of providing attractive performance gains in the context of multiple-input multiple-output systems, provided accurate channel state information (CSI) is available....

Some new methods for the comparison of two linear regression models (2007)

Liu, W., Jamshidian, M., Zhang, Y., Bretz, F., Han, X.L.

The frequently used approach to the comparison of two linear regression models is to use the partial F test. It is pointed out in this paper that the partial F test has in fact a naturally associated...

A note on Hall's triple sampling procedure: a multiple sample second order sequential analogue of the Behrens-Fisher problem (2007)

Liu, W., Wang, N.

In many statistical problems, the variances of the populations cannot be assumed to be equal. These inhomogeneity problems are often more difficult to handle than the corresponding homogeneity...

Reciprocating friction and wear behavior of WC-Co based cemented carbides manufactured by electro-discharge machining (2007)

Bonny, K, De Baets, P, Lauwers, B, Vleugels, J, Liu, W

Tungsten carbide based hardmetals with cobalt binder phase are widely used in engineering industries for their excellent mechanical properties and outstanding wear performance. Reciprocative sliding...

Influence of surface finishing and binder phase on friction and wear of WC based hardmetals (2007)

Bonny, K, De Baets, P, Lauwers, B, Vleugels, J, Liu, W, Huang, S

At present, cobalt is the most commonly used binder material in tungsten carbide based hardmetals. Current research on sliding wear performance of these cemented carbides, however, reveals promising...

Influence of Secondary Electro-Conductive Phases on the Electrical Discharge Machineability and Tribological Behavior of Zirconia-Based Ceramic Composites (2007)

Bonny, K, De Baets, P, Lauwers, B, Vleugels, J, Liu, W

ZrO2-based composites with 40 vol % WC, TiCN or TiN were processed in order to investigate the wire electrical discharge machining (EDM) possibility in di-water. The relationships between material...

A successful field test of a mobile and multilingual information service system COMPASS2008 (2007)

Uszkoreit, H., Xu, F., Liu, W., Steffen, J., Aslan, I., Liu, J., ...

We will describe a field test and its evaluation of a truly novel type of mobile computer programs that will assist foreign tourists in their communication with Chinese people. The software is an...

Performance predictions for general-purpose computation on GPUs (2007)

Liu, W., Müller-Wittig, W., Schmidt, B.

Using modern graphics processing units for no-graphics high performance computing is motivated by their enhanced programmability, attractive price/performance ratio and incredible growth in speed....

West Nile virus-induced cytoplasmic membrane structures provide partial protection against the interferon-induced antiviral MxA protein (2007)

Hoenen, A., Liu, W., Kochs, G., Khromykh, A., Mackenzie, J.

The human MxA protein is a type I and III interferon (IFN)-induced protein with proven antiviral activity against RNA viruses. In this study, we investigated the effect of MxA expression on the...

Operability region equivalence: simultaneous confidence bands for the equivalence of two regression models over restricted regions (2007)

Liu, W., Hayter, A.J., Wynn, H.P.

In many scientific problems the purpose of comparing two linear regression models is to demonstrate that they have only negligible differences and so can be regarded as being practically equivalent....

Testing on a Large Scale (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Albuquerque-Portes, M, Alexandrov, L, Amorim, A, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

Slope modified confidence bands for a simple linear regression model (2006)

Hayter, A.J., Wynn, H.P., Liu, W.

Considerable attention has been directed in the statistical literature towards the construction of confidence bands for a simple linear regression model. These confidence bands allow the experimenter...

Testing on a Large Scale: Running the ATLAS Data Acquisition and High Level Trigger Software on 700 PC Nodes (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Alexandrov, L, Amorim, A, Armstrong, S, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

Proposal of the Next Incarnation of Accelerator Test Facility at KEK for the International Linear Collider (2006)

Araki, S., Hayano, H., Higashi, Y., Honda, Y., Kanazawa, K., Kubo, K., ...

To reach design luminosity, the International Linear Collider (ILC) must be able to create and reliably maintain nanometer size beams. The ATF damping ring is the unique facility where ILC emittances...

ATF2 Proposal: v. 2 (2006)

Grishanov, B I, Agapov, I V, Alabau-Pons, M, Angal-Kalinin, Deepa, Appleby, R, Araki, S, ...

For achieving the high luminosity required at the International Linear Collider (ILC), it is critical to focus the beams to nanometer size with the ILC Beam Delivery System (BDS), and to maintain the...

GPU-ClustalW: Using graphics hardware to accelerate multiple sequence alignment (2006)

Liu, W., Schmidt, B., Voss, G., Müller-Wittig, W.

Molecular Biologists frequently compute multiple sequence alignments (MSAs) to identify similar regions in protein families. However, aligning hundreds of sequences by popular MSA tools such as...

Increased epithelial and serum expression of macrophage migration inhibitory factor (MIF) in gastric cancer: potential role of MIF in gastric carcinogenesis (2006)

He, XX, Yang, J, Ding, YW, Liu, W, Shen, QY, Xia, HHX

AIMS: Macrophage migration inhibitory factor (MIF) is implicated in tumorigenesis. This study was conducted to determine whether MIF expression is associated with gastric pathology and whether MIF...

A test against an umbrella ordered alternative (2006)

Singh, P., Liu, W.

Consider k(k3) independent populations π1,…,πk such that cumulative distribution function (cdf) of an observation from population πi is Fi(x)=F[(x-μi)/θi], a member of general location scale...

Direct observation and theoretical interpretation of strongly enhanced lateral diffusion of photogenerated carriers in InGaN/GaN quantum well structures (2005)

Xu, SJ, Wang, YJ, Li, Q, Zhang, XH, Liu, W, Chua, SJ

Strongly enhanced lateral diffusion of photogenerated carriers was directly observed in the luminescent image of the InGaN/GaN quantum wells. Such an effect was quantitatively modeled using diffusion...

Spectral features of LO phonon sidebands in luminescence of free excitons in GaN (2005)

Xu, SJ, Li, GQ, Xiong, SJ, Tong, DSY, Che, CM, Liu, W, ...

In the paper a combined experimental and theoretical investigation of the longitudinal optical phonon sidebands (PSBs) in the luminescence of free excitons in GaN at moderately high temperatures was...

Direct observation and theoretical interpretation of strongly enhanced lateral diffusion of photogenerated carriers in InGaN/GaN quantum well structures (2005)

Xu, SJ, Wang, YJ, Li, Q, Zhang, XH, Liu, W, Chua, SJ

Strongly enhanced lateral diffusion of photogenerated carriers was directly observed in the luminescent image of the InGaN/GaN quantum wells. Such an effect was quantitatively modeled using diffusion...

A generalized sidelobe canceller employing two-dimensional frequency Invariant filters (2005)

Liu, W., Weiss, S., Hanzo, L.

Based on the generalized sidelobe canceller (GSC), we propose a novel adaptive broadband beamformer, where the quiescent vector and blocking matrix are replaced by a series of two-dimensional...

A subband-selective broadband GSC with cosine-modulated blocking matrix (2004)

Liu, W., Weiss, S., Hanzo, L.

A novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by...

The baseline dataflow system of the ATLAS trigger and DAQ (2003)

Vermeulen, J C, Abolins, M, Dos Anjos, A, Barisonzi, M, Beck, H P, Beretta, M, ...

In this paper the baseline design of the ATLAS High Level Trigger and Data Acquisition system with respect to the DataFlow aspects, as presented in the recently submitted ATLAS Trigger/DAQ/Controls...

Experience with multi-threaded C++ applications in the ATLAS DataFlow software (2003)

Gadomski, S, Abolins, M, Barisonzi, M, Beck, H P, Beretta, M, Blair, R, ...

The DataFlow is sub-system of the ATLAS data acquisition responsible for the reception, buffering and subsequent movement of partial and full event data to the higher level triggers: Level 2 and...

Construction and Testing of a 21 GHz Ceramic Based Power Extractor (2003)

Newsham, D, Braun, H, Carron, G, Döbert, Steffen, Gai, W, Konecny, R, ...

A ceramic based power extractor [1] operating at 21 GHz was built by DULY Research Inc. and tested at CTF2, the CERN Linear Collider (CLIC) Test Facility. The structure includes a ceramic extractor...

A novel method for partially adaptive broadband beamforming (2003)

Liu, W., Weiss, S., Hanzo, L.

In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The blocking matrix of the GSC is constructed such that its...

A novel method for partially adaptive broadband beamforming (2003)

Liu, W., Weiss, S., Hanzo, L.

In this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The blocking matrix of the GSC is constructed such that its...

The role of the haematopoietic tissue in haemocyte production and maturation of the black tiger shrimp (Penaeus monodon) (2002)

Botterblom, M.H.A., Liu, W., Taverne, N.

The haematopoietic tissue (HPT) of the black tiger shrimp (Penaeus monodon) is located in different areas in the cephalothorax, mainly at the dorsal side of the stomach and in the onset of the...

Nitrogen cycling in an ecological farming system of milk vetch culture - pig raising - biogas fermentation - rice culture (2002)

Liu, J.R., Zhang, M.L., Wu, J.F., Guo, C.Z., Liu, W.

The [15]N - labeled technique was used to study the stock, transformation, fate and utilization efficiency of N in the farming-pig husbandry-biogas ecosystem in rice areas. It was shown that the...

Polynucleotide viral vaccines: Codon optimization and ubiquitin conjugation enhances prophylactic and therapeutic efficacy (2002)

Liu, W., Zhao, K., Gao, F. G., Leggatt, G. R., Fernando, G. J., Frazer, I. H.

Papillomavirus infection is a major antecedent of anogenital malignancy. We have previously established that the L1 and L2 capsid genes of papillomavirus have suboptimal codon usage for expression in...

Direct determination of free exciton binding energy from phonon-assisted luminescence spectra in GaN epilayers (2002)

Xu, S, Liu, W, Li, MF

Investigation of variable-temperature longitudinal optical (LO) phonon-assisted luminescence spectra of free excitons and free electrons in heteroepitaxial GaN thin films has been conducted. It is...