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两个非线性发展方程的双向孤波解与孤子解

物理学报 2003年第8期52卷 1848-1857页

作者：徐桂琼李志斌上海大学信息管理系上海200436 华东师范大学计算机科学技术系上海200062

采用分步确定拟解的原则 ,对齐次平衡法求非线性发展方程孤子解的关键步骤作了进一步改进 .以广义Boussinesq方程和bidirectionalKaup Kupershmidt方程为应用实例 ,说明使用该方法可有效避免“中间表达式膨胀”的问题 ,除获得标准Hirot... 详细信息

采用分步确定拟解的原则 ,对齐次平衡法求非线性发展方程孤子解的关键步骤作了进一步改进 .以广义Boussinesq方程和bidirectionalKaup Kupershmidt方程为应用实例 ,说明使用该方法可有效避免“中间表达式膨胀”的问题 ,除获得标准Hirota形式的孤子解外 ,还能获得其他形式的孤子解 .

关键词：非线性发展方程双向孤波解孤子解齐次平衡法广义Boussinesq方程 bidirectional-Kaup-Kupershmidt方程

Utopian preference mapping and the utopian preference method for group multiobjective optimization

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Progress in Natural science:Materials International 2003年第8期 15-19页

作者： HU Yuda, HONG Zhenjie and ZHOU Xuanwei (1. school of Mathematics and information science, Wenzhou {3.sity, Wenzhou 3.5027, china 2. department of Mathematics, shanghai {3.sity, shanghai 20043., china 3. department of Mathematics, Wenzhou {13. College, Wenzhou 3.5027, china)

The individual utopian preference and the group utopian preference on a set of alternatives, and the concept of the utopi-an preference mapping from the individual utopian preferences to the group utopian preferences, based on the utopian points of the corre-sponding multiobjective optimization models proposed by decision makers are introduced. Through studying the various fundamental prop-erties of the utopian preference mapping, a method for solving group multiobjective optimization problems with multiple multiobjective op-timization models is constructed.

关键词： group decision making multiobjective optimization Utopian point Utopian preference.

A generalized Weyl-Wigner quantization scheme unifying P-Q and Q-P ordering and Weyl ordering of operators

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Chinese Physics B 2012年第6期21卷 207-212页

作者：王继锁范洪义孟祥国 Shandong Provincial Key Laboratory of Laser Polarization and information technology College of Physics and EngineeringQufu Normal University department of Physics Liaocheng University department of Physics Shanghai Jiao Tong University

By extending the usual Wigner operator to the s-parameterized one as 1/4π2 integral （dyduexp [iu（q-Q）＋iy（p-P）＋is/2yu]） from n=- ∞ to ∞ with s beng a,real parameter,we propose a generalized Weyl quantization scheme which accompanies a new generalized s-parameterized ordering *** rule recovers P-Q ordering,Q-P ordering,and Weyl ordering of operators in s = 1,1,0 *** it differs from the Cahill-Glaubers’ ordering rule which unifies normal ordering,antinormal ordering,and Weyl *** also show that in this scheme the s-parameter plays the role of correlation between two quadratures Q and *** formula that can rearrange a given operator into its new s-parameterized ordering is presented.

关键词： generalized Wigner operator generalized operator ordering rule bivariate normal dis-tribution

Genetic Structure of Tonglu Population of Torreya jackii,an Endangered Plant in china

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Genetic Structure of Tonglu Population of Torreya jackii,an ...

Deriving new operator identities by alternately using normally,antinormally,and Weyl ordered integration technique

2011全国植物生物学研讨会

作者： Jianhui Li department of Environmental science,east {3. normal university,shanghai 2.0062

Using inter-simple squence repeat(ISSR) molecular technique,six subpopulations of Torreya jackii(Taxaceae) collected from Baiyunyuan Forest Park of Tonglu Country of Zhejiang Province were analyzed,so that genetic structure of T. jackii could be revealed in small *** 12 primers,87 polymorphic loci from total 194 loci were detected in 120 individuals from 6 subpopulations and the overall percentage of polymorphic loci(P) was 44.85%with an average of 29.21%. Shannon’s information index(I) and Nei’s gene diversity(h) of *** was the total value of 0.1663.0.103. with an average of 0.1199、0.0755.P,I,h indicated that genetic diversitv at species level was relatively *** at subpopulation level was

关键词： Torreya jackii ISSR subpopulation genetic diversity genetic differentiation

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science china(Physics,Mechanics & Astronomy) 2010年第9期53卷 1626-1630页

作者： FAN HongYi1,YUAN HongChun1 & JIANG NianQuan2 1department of Physics,shanghai Jiao Tong univer{3.,shanghai 20003.,china 2College of Physics and Electric information,Wenzhou univer{3.,Wenzhou 3.503.,china 1. department of Physics Shanghai Jiao Tong University Shanghai 200030 China2. College of Physics and Electric Information Wenzhou University Wenzhou 325035 China

Dirac's ket-bra formalism is the language of quantum *** have reviewed how to apply Newton-Leibniz integration rules to Dirac's ket-bra projectors in previous *** this work,by alternately using the technique of integration within normal,antinormal,and Weyl ordering of operators we not only derive some new operator ordering identities,but also deduce some new integration formulas regarding Laguerre and Hermite *** may open a new route of directly deriving some complicated mathematical integration formulas by virtue of the quantum mechanical operator ordering technique,without really performing the integrations in the ordinary way.

关键词： operator ordering identities Laguerre and Hermite polynomials the IWOP technique

Biomarkers of neurodegenerative disorders: How good are they?

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Cell Research 2004年第5期14卷 347-358页

作者： Varun RACHAKONDA department of Neurology Baylor College of Medicine Houston TX USA

Biomarkers are very important indicators of normal and abnormal biological processes. Specific changes in pathologies, biochemistries and genetics can give us comprehensive information regarding the nature of any particular disease. A good biomarker should be precise and reliable, distinguishable between normal and interested disease, and differential between different diseases. It is believed that biomarkers have great potential in predicting chances for diseases, aiding in early diagnosis, and setting standards for the development of new remedies to treat diseases. New technologies have enabled scientists to identify biomarkers of several different neurodegenerative diseases. The followings, for instance, are only a few of the many new biomarkers that have been recently identified: the phosphorylated tau protein and aggregated β-amyloid peptide for Alzheimer’s disease (AD), α-synuclein contained Lewy bodies and altered dopamine transporter (DAT) imaging for Parkinson’s disease (PD), SOD mutations for familial amyotrophic lateral sclerosis (ALS), and CAG repeats resulted from Huntington’s gene mutations in Huntington’s disease (HD). This article will focus on the most-recent findings of biomarkers belonging to the four mentioned neurodegenerative diseases.

关键词： Alzheimer’s disease Parkinson’s disease Amyotrophic Lateral Sclerosis Huntington’s disease biomarkers.

First-principles calculations and experimental studies of Sn-Zn alloys as negative electrode materials for lithium-ion batteries

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Rare Metals 2011年第2期30卷 160-165页

作者： RU Qiang PENG Wei ZHANG Zhiwen HU Shejun LI Yanling Laboratory of Quantum information technology School of Physics and Telecommunication Engineering South China Normal University Guangzhou 510006 China

The physical characters and electrochemical properties of various phases in a Sn-Zn electrode, such as formation energy, plateau potential, specific capacity, as well as volume expansion, were calculated by the first-principles plane-wave pseudo-potential method based on the den- sity functional theory. Sn-Zn films were also deposited on copper foils by an electroless plating technique. The actual composition and chemical characters were explored by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, plasma atomic emission spectrometry （ICP）, and constant current charge/discharge measurements （CC）. The results show that separation phases with tin and zinc including a small quantity of Cu6Sn5 phase were obtained, the initial lithium insertion capacity of the Sn-Zn film was 661 mAh/g, and obvious potential pla- teaus of about 0.4 V and 0.7 V were displayed, which is in accordance with the results of theoretical calculations. The capacity of the Sn-Zn film decreased seriously with the increase of cycle number.

关键词： lithium batteries electrochemical electrodes tin alloys first-principles calculations

基于公共电话网的多媒体通信终端系统—H.3.4建议和实现方法的研究

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计算机工程 1997年第S1期23卷 95-97,101页

作者：张卫华东师范大学计算机系上海200062

基于低速率线路的多媒体通信是建立在普通公用电话网上的一种新的通信技术。文章论述了H.3.4多媒体通信标准,讨论了相应多媒体终端—可视电话的系统结构、技术特征和实现方法。

关键词：通信协议多媒体可视电话

Analysis on Event Delay in Event-Driven Wireless Sensor Networks

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Analysis on Event Delay in Event-Driven Wireless Sensor Netw...