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Heat transfer enhancement of nanofluids
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 areExpand
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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
TLDR
In recent years there has been growing interest in study of multi-antenna transmit designs for providing secure communication over the physical layer. Expand
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Cooperative Secure Beamforming for AF Relay Networks With Multiple Eavesdroppers
TLDR
This letter studies cooperative secure beamforming for amplify-and-forward (AF) relay networks in the presence of multiple eavesdroppers. Expand
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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
TLDR
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
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Aggregation structure and thermal conductivity of nanofluids
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
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Robust Cooperative Beamforming and Artificial Noise Design for Physical-Layer Secrecy in AF Multi-Antenna Multi-Relay Networks
TLDR
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
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Guidelines for Diagnosis and Treatment of Primary Liver Cancer in China (2017 Edition)
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 fourthExpand
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Robust Multicast Beamforming for Spectrum Sharing-Based Cognitive Radios
TLDR
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
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A Control Framework for Tactile Servoing
TLDR
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
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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
TLDR
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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