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武汉大学学报(人文社会科学版) 2000年第5期53卷 660-664页

作者：邹元江武汉大学人文科学学院!湖北武汉43.072

汤显祖的“意识境界”是认知主体将自己的生命作了新的跃动和蜕变而创造的 ,是个体生命与真理“遇合”而产生的辉光气象。“意识境界”生成的三个层面是 :1、遇而后辨 ;2、反思判断 ;3.辨亦不辨。

关键词：汤显祖意识境界生命体验

INVERSE QR ITERATIVE METHOD FOR SUBSPACE TRACKING

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Journal of Electronics(china) 2009年第2期26卷 270-273页

作者： Wang Yajun Ouyang Shan Navigation Division International Airport Guilin 541007 china school of information and Communications Guilin university of Electronic Technology Guilin 541004 china

The Bi-LS method based on QR decomposition provides a convenient framework for de-veloping efficient subspace tracking *** overcome the shortcoming of the backsubstitution step and improve the parallel architecture of the Bi-LS algorithms,a Bi-LS subspace tracking algorithm based on Inverse QR(IQR) decomposition is *** proposed IQR iterative algorithm for subspace tracking is well suited for the parallel implementation in the systolic *** results are presented to illustrate the effectiveness of the proposed IQR subspace tracking algorithm.

关键词： Subspace tracking Inverse QR(IQR) decomposition Bi-LS Adaptive algorithm

Pool boiling on the superhydrophilic surface with TiO_2 nanotube arrays

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Science china(Technological Sciences) 2009年第6期52卷 1596-1600页

作者： CHEN Yue,MO DongChuan,ZHAO HongBin,DING Nan & LU ShuShen school of Chemistry and Chemical Engineering,Sun Yat-sen university,Guangzhou 510275,china school of Chemistry and Chemical Engineering Sun Yat-sen University Guangzhou 510275 China

Surface with TiO2 nanotube arrays(TNTAs)is superhydrophilic and of great specific *** paper investigates the pool boiling characteristics at the thermal interface with *** results show that the TNTAs interface can enhance the pool boiling heat transfer compared to the pure Ti metal *** bubbles formed at the initial nucleation state are very small and released in higher *** pool boiling heat transfer enhancement at the TNTAs interface may be attributed to the high density of nucleate site,high intrinsic heating area of nanotubes layer,superhydrophilicity and the vertically oriented nanotube structure.

关键词： pool boiling TiO2 nanotube arrays superhydrophilic

Phase and structure of polycrystal Sr_(0.69) La_(0.3.)F_(2.3.)+SrS solid electrolyte material

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中国有色金属学会会刊：英文版 1999年第3期9卷 541-545页

作者： Tian Yanwen(田彦文), Ma Ping(马平), Zhang Xin(张新), Zhai Yuchun(翟玉春) school of Materials and Metallurgy, Northeastern university, Shenyang 110006, P. R. china Northeastern Univ Sch Met & Mat Shenyang 110006 Peoples R China

The phase and the structure of polycrystal material, which was prepared by calcining the co precipitated fluoride powder of Sr and La with a ratio of 0.69∶0.3. mixed with SrS powder, were investigated by X ray diffraction and electron probe scanning. In the materials, three phases were found, they are Sr 0.69 La 0.3. F 2.3. solid solution phase with a pure SrF 2 cubic structure whose lattice constant is 5.843.?, SrS single phase with a NaCl cubic structure, and an unknown phase that is produced by the interaction of SrS and co precipitated powder. It was also found that SrS has no influence on the structure of Sr 0.69 La 0.3. F 2.3. solid solution.

关键词： X ray diffraction electron probe polycrystal Sr 0.69 La 0.3. F 2.3. +SrS material phase structure

A Mechanical Model for Three-phase Permanent Deformation of Asphalt Mixture under Repeated Load

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Journal of wuhan university of Technology(Materials Science) 2009年第6期24卷 1001-1003页

作者：赵永利 school of Transportation Southeast University

On basis of the Burgers model, a new model consisting of modified dashpot and Van Der Poel model was derived from rheological and viscoelastic theory. Subsequently, triaxial repeated load permanent deformation tests of AC16 asphalt mixtures were conducted to validate this new developed model. Parameters of new developed model were obtained by a nonlinear regression analysis of test data, and then permanent strains and flow number of each mixture were calculated. The experimental results prove that the new developed model can well describe three phases permanent deformation of asphalt mixture under repeated load and it can be used for pavement mechanical analysis and rutting prediction.

关键词： asphalt mixture permanent deformation three phases theory triaxial repeated load

Rolling Element Bearing Diagnostics by Combination of Envelope Analysis and Wavelet Transform

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Journal of university of Science and Technology Beijing 2001年第1期8卷 69-74页

作者： Ying Tang, Qiao Sun Mechanical Engineering school, university of Science and Technology Beijing, Beijing 100083. china Department of Mechanical Engineering, university of Calgary Calgary Alberta T2N 1N4, Canada Univ Sci & Technol Beijing Sch Mech Engn Beijing 100083 Peoples R China Univ Calgary Dept Mech Engn Calgary AB T2N 1N4 Canada

Rolling element-bearing diagnostics has been studied over the last thirty years, and envelope analysis is widely recognized as being the best approach for detection and diagnosis of rolling element bearing incipient failure. But one of the on-going difficulties with envelope technique is to determine the best frequency band to envelop. Here, wavelet transform technique is introduced into envelope analysis to solve the problem by capturing bearing defects-sensory scales (i.e. frequency bands). A modulated Gaussian function is chosen to be the analytical wavelet because it coincides well with bearing defect-induced vibration signal patterns. Vibration signals measured from railway bearing tests were studied by the proposed method. Cases of bearings with single and multiple defects on inner and outer race under different testing conditions are presented. Experimental results showed that the proposed method allowed a more accurate local description and separation of transient signal part, which were caused by impacts between defects and the mating surfaces in the bearing. The combination method provides an effective signal detection technique for rolling element-bearing diagnostics.

关键词： continuous wavelet transform envelope analysis rolling element bearing diagnostics

Two-dimensional thermoelasticity solution for functionally graded thick beams

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Science china(Physics,Mechanics & Astronomy) 2006年第4期49卷 451-460页

作者： Lü Chaofeng1, CHEN Weiqiu1 & ZHONG Zheng2 1. Department of Civil Engineering, Zhejiang university, Hangzhou 3.0027, china 2. Key Laboratory of Solid Mechanics of Ministry of Education, school of Aerospace Engineering and Ap- plied Mechanics, Tongji university, Shanghai 200092, china Department of Civil Engineering Zhejiang University Hangzhou 310027 China Key Laboratory of Solid Mechanics of Ministry of Education School of Aerospace Engineering Applied Mechanics Tongji University Shanghai 200092 China

Two-dimensional thermoelasticity analysis of functionally graded thick beams is presented using the state space method coupled with the technique of differential quadrature. Material properties vary continuously and smoothly through the beam thickness, leading to variable coefficients in the state equation derived from the elasticity equations. Approximate laminate model is employed to translate the state equation into the one with constant coefficients in each layer. To avoid numerical instability, joint coupling matrices are introduced according to the continuity conditions at interfaces in the approximate model. The differential quadrature procedure is applied to discretizing the beam in the axial direction to make easy the treatment of arbitrary end conditions. A simply-supported beam with exponentially varying material properties is considered to validate the present method. Numerical examples are performed to investigate the influences of relative parameters.

关键词： state equation differential quadrature approximate laminate model joint coupling matrices thermal stresses.

Influence of Additive Silica on the Laser Melting of the Ceramic Coatings

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Journal of Materials Science & Technology 2003年第1期19卷 33-36页

作者： Yuanzheng YANG, Xiaojun BAI, Zhiwei XIE and Tongchun KUANGFaculty of Material and Energy, Guangdong university of Technology, Guangzhou 510643. chinaZhengyi LIU and Yuzhi ZHUANGDept. of Mechano-Electronic Engineering, south china university of Technology, Guangzhou 510641, chinaBaiyun TONG and Yong LIANGInstitute of Metal Research, Chinese Academy of sciences, Shenyang 110016, china Faculty of Mat. and Energy Guangdong Univ. of Technol. Guangzhou 510643 China Dept. of Mech.-Electron. Eng. South China Univ. of Technol. Guangzhou 510641 China Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China

The influence of additive silica on the microstructure of plasma sprayed Al2O3.and Al2O3.13.wt pct TiO2 ceramiccoatings at laser melting has been investigated in this study. At the laser melting, additive silica in Al2O3.ceramiccoating can reduce the stress of cooling shrinkage generated during solidification. Moreover, silica can render finersize of grains of the melting layer and form continuous glassy matter around the grain boundaries so as to reducefurther the cooling stresses and to suppress the formation and spreading of cracks. On the other hand, at the lasermelting, TiO2 reacts with Al2O3.and transforms into TiAl2O5. The latter new phase has great and anisotropiccoefficients of thermal expansion leading to big and asymmetrical stresses and thus to form cracks in the meltinglayer of Al2O3.13.wt pet TiO2 coating. Due to the fact that the influence of additive silica on the suppression of theformation of cracks is rather limited and cannot counterbalance the negative effect of TiAl2O5, thus the melting layerof Al2O3.13.wt pct TiO2 coating doped with 3.wt pct SiO2 cracks also. Nevertheless, TiO2 can greatly developthe wear resistance of the ceramic coating as sprayed or laser melted.

关键词： Plasma spraying Laser remelting Additive silica Stress crack

Error analysis of the semi-discrete local discontinuous Galerkin method for semiconductor device simulation models

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Science china Mathematics 2010年第12期53卷 3255-3278页

作者： LIU YunXian 1, & SHU Chi-Wang 2 1 school of Mathematics, Shandong university, Jinan 250100, china 2 Division of Applied Mathematics, Brown university, Providence, RI 02912, USA 1. school of Mathematics Shandong University Jinan 250100 China2. Division of Applied Mathematics Brown University Providence RI 02912 USA

In this paper we continue our effort in Liu-Shu (2004) and Liu-Shu (2007) for developing local discontinuous Galerkin (LDG) finite element methods to discretize moment models in semiconductor device simulations. We consider drift-diffusion (DD) and high-field (HF) models of one-dimensional devices, which involve not only first derivative convection terms but also second derivative diffusion terms, as well as a coupled Poisson potential equation. Error estimates are obtained for both models with smooth solutions. The main technical difficulties in the analysis include the treatment of the inter-element jump terms which arise from the discontinuous nature of the numerical method, the nonlinearity, and the coupling of the models. A simulation is also performed to validate the analysis.

关键词： local discontinuous Galerkin method error estimate semiconductor