Q. Li

Publications
Influence

Y. Xuan, Q. Li
Materials Science
1 February 2000

Abstract This paper presents a procedure for preparing a nanofluid which is a suspension consisting of nanophase powders and a base liquid. By means of the procedure, some sample nanofluids are… Expand

1,950
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Optimal and Robust Transmit Designs for MISO Channel Secrecy by Semidefinite Programming

Q. Li, W. Ma
Computer Science, Mathematics
IEEE Transactions on Signal Processing
17 December 2010

In recent years there has been growing interest in study of multi-antenna transmit designs for providing secure communication over the physical layer. Expand

Cooperative Secure Beamforming for AF Relay Networks With Multiple Eavesdroppers

Y. Yang, Q. Li, W. Ma, J. Ge, P. Ching
Computer Science
IEEE Signal Processing Letters
2013

This letter studies cooperative secure beamforming for amplify-and-forward (AF) relay networks in the presence of multiple eavesdroppers. Expand

Spatially Selective Artificial-Noise Aided Transmit Optimization for MISO Multi-Eves Secrecy Rate Maximization

Q. Li, W. Ma
Computer Science, Mathematics
IEEE Transactions on Signal Processing
8 March 2013

This paper considers joint optimization of the transmit and AN covariances for secrecy rate maximization (SRM), with a design flexibility that the AN can take any spatial pattern. Expand

Aggregation structure and thermal conductivity of nanofluids

Y. Xuan, Q. Li, Weifeng Hu
Chemistry
1 April 2003

Nanofluids are obtained by suspending metallic nanoparticles in conventional base liquids. Such a new class of heat-transfer fluid is superior to the base liquids in energy-transport performance,… Expand

Robust Cooperative Beamforming and Artificial Noise Design for Physical-Layer Secrecy in AF Multi-Antenna Multi-Relay Networks

Q. Li, Y. Yang, W. Ma, Meilu Lin, J. Ge, J. Lin
Computer Science
IEEE Transactions on Signal Processing
2015

This paper is concerned with an optimization problem in a two-hop relay wiretap channel, wherein multiple multi-Antenna relays collaboratively amplify and forward (AF) information from a single-antenna source to the destination, and at the same time emit artificial noise (AN) to improve physical-layer information security. Expand

Guidelines for Diagnosis and Treatment of Primary Liver Cancer in China (2017 Edition)

J. Zhou, Hui-chuan Sun, +55 authors Jia Fan
Medicine
Liver Cancer
14 June 2018

Background: Hepatocellular carcinoma (HCC) (about 85–90% of primary liver cancer) is particularly prevalent in China because of the high prevalence of chronic hepatitis B infection. HCC is the fourth… Expand

Robust Multicast Beamforming for Spectrum Sharing-Based Cognitive Radios

Yongwei Huang, Q. Li, W. Ma, S. Zhang
Mathematics, Computer Science
IEEE Transactions on Signal Processing
2012

We consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive radio network, the robust problem of which can be solved efficiently via convex optimization techniques. Expand

A Control Framework for Tactile Servoing

Q. Li, C. Schürmann, R. Haschke, H. Ritter
Computer Science
Robotics: Science and Systems
24 June 2013

The advent of sensor arrays providing tactile feedback with high spatial and temporal resolution asks for new control strategies to exploit this important and valuable sensory channel for grasping and manipulation tasks. Expand

Safe convex approximation to outage-based MISO secrecy rate optimization under imperfect CSI and with artificial noise

Q. Li, W. Ma, A. So
Mathematics, Computer Science
Conference Record of the Forty Fifth Asilomar…
1 November 2011

We formulate an artificial-noise (AN)-aided secrecy-rate maximization problem where the CSI uncertainties are handled using an outage-based formulation. Expand

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