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Synthesis　of　an　N^5N^（10）－methenyltetrahydrofolate　Model　and　Its　Substituted　One－Carbon　Unit　Transfer　reaction

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Chinese Chemical Letters 1996年第9期7卷 803-806页

作者： Jian Xin CHEN Chi Zhong XIA and Jin pei CHENG(Datong Medical College,Datong,shanxi,037008)(department of Chemistry,shanxi university,Taiyuan, 030006.)(Nankai university,Tianjin,300071) Datong Medical College Datong Shanxi 037008 department of Chemistry Shanxi University Taiyuan 030006 Nankai university Tianjin 300071

Substituted imidazolinium salt,1,2-dimethyl-3-(p-methoxybenzenesulfonyl) imidazolinium iodide,as a tetrahydrofolate model in terms of the ability to transfer a substituted one-carbon unit (ethylidyne,nitromethylethylidene),can react with a variety of mono-and bifunctional nucleophiles and lead to some carboline alkaloids and other heterocyclic compounds.

关键词： Synthesis an N~5N Its Carbon

A Modified Binomial Tree Method for Currency Lookback Options

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Acta Mathematica Sinica,English Series 2000年第3期16卷 445-454页

作者： Min Dai Institute of mathematics,Fudan university,Shanghai 200433,p.r.china Institute of mathematics Fudan University Shanghai 200433 P. R. China

The binomial tree method is the most popular numerical approach to pricing options. However,for currency lookback options,this method is not consistent with the corresponding continuous models,which leads to slow speed of *** the basis of the pDE approach,we develop a consistent numerical scheme called the modified binomial tree *** possesses one order of accuracy and its efficiency is demonstrated by numerical *** convergence proofs are also produced in terms of numerical analysis and the notion of viscosity solution.

关键词： Modified binomial tree method Currency lookback options Convergence

research on Environment-Economy CoordinationDevelopment Model

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Systems Science and Systems Engineering 1999年第1期9卷 106-111页

作者： LI Hong(shanxi Finance and Economy university, Taiyuan 030006, china)

This paper represents the research on the issues of environment-economy coordinationdevelopment from the point of total welfare maximization, by defining environment- economy corrdination development from the angle of the total welfare maximization; presents corresponding mathematicsmodels; systematically anslyzes different structural modes; proves that total welfare function is abnormal under linear structure; indicates difficulties in analyzing and researching coordination developmentby means of traditional mathematical analysis.

关键词： environment and economy coordination development mathematics model structureanalysis difficulties

Modeling and stabilization for a class of nonlinear networked control systems: A T-S fuzzy approach

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progress in Natural Science:Materials International 2008年第8期18卷 1031-1037页

作者： Xinchun Jiaa,*, Dawei Zhanga, Lihong Zheng a, Nanning Zheng b a School of mathematics Science, shanxi university, Taiyuan 030006, china b Institute of Artificial Intelligent and robotics, Xi’an Jiaotong university, Xi’an 710049, china School of mathematics Science Shanxi University Taiyuan 030006 China Institute of Artificial Intelligent and robotics Xi’an Jiaotong University Xi’an 710049 China

The stabilization problem for a class of nonlinear networked control systems (NCSs) is investigated in this paper. A Takagi-Sugeno (T-S) fuzzy model is employed to represent the nonlinear controlled plant in the NCSs. Based on parallel distributed compensation (pDC) technique, a novel model of the nonlinear NCSs is established firstly in consideration of both network-induced delay and packet losses in transmission. Then a stability condition of the nonlinear NCSs is presented in terms of linear matrix inequalities (LMIs) by using the Lyapunov-Krasovskii functional method and the delay input approach. Furthermore, the control design of the nonlinear NCSs is developed by means of LMIs. Finally, a numerical example is given to demonstrate the effectiveness of the proposed method.

关键词： Nonlinear networked control systems Takagi–Sugeno (T-S) fuzzy systems Stabilization packet losses Network-induced delay Linear matrix inequality (LMI)

Enterprise Development and Enterprise Innovation Management Support System Under the Background of Interne

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Journal of Systems Science and Systems Engineering 2001年第1期13卷 73-80页

作者： LIANG Jia hua, LU Cai mei, CAO Xuan wei department of Environment Science, shanxi university, Taiyuan 030006, china College of Adult Education, shanxi university, Taiyuan 030006, china College of Adult Education Shanxi University Taiyuan 030006 China

：This paper puts forward a new idea-Innovation Operation, the new stage of enterprisedevelopment, and analyses a new model of enterprise development and holds a new idea and new method ofbuilding enterprise managemen... 详细信息

关键词： enterprise innovation mode enterprise innovation management support system

7th CIIE likely to prove solid growth platform for many companies

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china Textile 2024年第4期 20-21页

作者： china Daily

The robust demand of the Chinese market and the improving business environment in the country make china a big growth opportunity for companies wishing to further expand their operations,said corporates that have registered to participate at this year's china International Import *** 7th edition of the annual CIIE,to be held in Shanghai from Nov 5 to 10,started its 100-day countdown on Saturday.

关键词： companies likely operations

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Application　of　Fuzzy　mathematics　in　the　Evaluation　of　Textbooks　in　institutions　of　Higher　Learning

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Systems Science and Systems Engineering 1996年第2期6卷 215-221页

作者： LI Jianning YAN Xianming(shanxi university, Taiyuan 030006 china)

The article first combines fuzzy mathematics with the analytic hierarchy process (AHp),putting forth the mathematical model of evaluation Of the textbook in institutions of higher *** textbooks will be cited as examples of analysis of practical application. And it is considered that the Fuzzy mathematical model is an important means of evaluation of textbooks in institutions of higher learning.

关键词： Fuzzy mathematics comprehensive evaluation A Hp (Analytic Hierarchical process) nearness weight

radiation spectrum of a high-dimensional rotating black hole

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Science china(physics,Mechanics & Astronomy) 2010年第3期53卷 504-507页

作者： ZHAO ren, LI HuaiFan, ZHANG LiChun & WU YueQin Institute of Theoretical physics, shanxi Datong university department of physics, shanxi Datong university, Datong 037009, china 1. Institute of Theoretical physics Shanxi Datong University Datong 037009 China

This study extends the classical Damour-ruffini method and discusses Hawking radiation in a (n + 4)-dimensional rotating black hole. Under the condition that the total energy and angular momentum of spacetime are conservative, but angular momentum a = J/M of unit mass of the black hole is variable, taking into consideration the reaction of the radiation of the particle to the spacetime, a new Tortoise coordinate transformation and discuss the black hole radiation spectrum is discussed. The radiation spectrum that satisfies the unitary principle in the general case is derived.

关键词： Damour-ruffini method Hawking radiation Tortoise coordinate transformation high-dimensional rotating spacetime

THE pHYSICAL ENTrOpY OF SINGLE CONSErVATION LAWS

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Journal of Computational mathematics 1998年第5期16卷 437-444页

作者： (department of mathematics, peking university, Beijing 100871, china) Beijing Univ Dept Math Beijing 100871 Peoples R China

By means of the comparisons with the formulas in statistical mechanics and thermodynamics, in this paper it is demonstrated that for the single conservation law partial derivative(t)u + partial derivative(x)f(u) = 0, if the flux function f(u) is convex (or concave), then, the physical entropy is S = -f(u); Furthermore, if we assume this result can be generalized to any f(u) with two order continuous derivative, from the thermodynamical principle that the local entropy production must be non-negative, one entropy inequality is derived, by which the O.A. Olejnik's famous E- condition can be explained successfully in physics.

关键词： conservation laws entropy entropy production