Wang Yanping

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OBJECTIVE This study examined the differences in neonatal mortality rates between urban and rural areas in China. METHODS AND RESULTS Data were taken from a database collected by the Chinese surveillance network for mortality of children under 5 years of age. The risk ratio of neonatal mortality for rural versus urban areas was between 2.2 and 2.7 for(More)
As an unconventional gas resource, shale gas is an practically alternative energy. Through the analysis of the current situation of shale gas development at home and abroad, this paper ascertains the influencing factors of the development prospect of the shale gas mainly from the aspects of the potential of the shale gas reservoirs, the controlling factors(More)
A MATCHING METHOD OF OCCLUDED IMAGES USING FEATURE TEMPLET Yuan Jie, Liao Yuan, Hu Zhengyi, Wang Yanping (College of Electronic Information, Wuhan University, Wuhan 430072, China) (State Key Laboratory of Software Engineering, Wuhan University) Based on the conner feature vector , which is shift , rotat ion, and scacle invariant, a method of recognizing(More)
Traveltime tomography is a technique to reconstruct acoustic, seismic, or electromagnetic wave-speed distributions from first arrival traveltime data. The ray paths that should be used for tomographic techniques strongly depend on the wave-speed distribution. In this paper, a new method is proposed for finding out the ray paths from Fermat's principle, that(More)
Polyinosinic-polycytidylic acid (Poly I:C) is an analogue of natural double strand RNA (dsRNA), which can simulate the viral dsRNA and stimulate the immune response. In the present study, peripheral blood mononuclear cells (PBMC) were isolated from piglets of Dapulian and Landrace with different disease resistance, and stimulated with 20 μg/mL Poly I:C for(More)
This paper focuses on downward looking linear array 3D SAR sparse imaging technique. The imaging geometry and the sparsity of the imaging scene are discussed first. Then, downward looking linear array 3D SAR sparse imaging with wave-front curvature compensation is illustrated in detail. Finally, distributed imaging scene simulation is operated to validate(More)
I n . W u h a n D a x u e Xuebao (Z i ran K e x u e B a n ) , 1 9 9 9 , 4 5 ( 1 ) : 9 1 ~ 9 4 ] A P P L I C A T I O N O F K O H O N E N N E T W O R K IN E C T I M A G E R E C O N S T R U C T I O N Pan Ming,Lu Zhentao,Su Xiangfang,Wang Yanping (College of Electronic Information, Wuhan University,Wuhan 430072,China ) Abstract A m e t h o d a b o u t us ing s(More)
Electrical capacitance tomography technique reconstructs dielectric constant distribution in an object by measuring the capacitances between the eletrode pairs which are mounted around this object. Because of the limitation of measurement condition, the measured data are imcomplet. This paper describes a multiresolution reconstructive algorithm which is(More)
A new method for reconstructing electrical conductivity distribution from electromagnetic (EM) data by using traveltime tomography is presented in this paper. Diffusive EM fields can be mathematically transformed to wavefields defined in a time-like variable. The transform uniquely relates a field satisfying a diffusion equation in time, or in frequency, to(More)