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Stochastic DEA model with undesirable outputs: An application to the prediction of anti-HIV therapy efficiency

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Progress in Natural Science:Materials International 2006年第7期16卷 753-759页

作者： BIAN Fuping and TANG Xiaoqin ( department of Mathematics, School of Science, tianjin university,{2., china Liuhui Institute of Applied Mathematics, Nankai university and tianjin university,{2., china) [a]department of Mathematics School of Science Tianjin University Tianjin China [b]Liuhui Institute of Applied Mathematics Nankai University and Tianjin University Tianjin China

This paper proposes a stochastic prediction DEA model with undesirable outputs and simplifies the process using chance-constrained techniques in order to obtain an equivalent linear programming formulation. The existence and stability of the optimal solutions have been proved. And the model is used to describe and predict the efficiency of anti-HIV therapy in AIDS patients.

关键词： data envelopment analysis (DEA) decision making units (DMU) undesirable outputs stochastic DEA model anti-HIV therapy.

The realization and structure of complete Lie algebras whose nilpotent radicals are Heisenberg algebras

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Chinese Science Bulletin 1998年第5期43卷 383-385页

作者： JIANG Cuibo 1 and MENG Daoji 2.1.department of Mathematics,Yantai Teachers university, Yantai 2.402.,{2. 2.department of Mathematics,Nankai university,tianjin 300071,{2.. department of Mathematics Yantai Teachers University Yantai China department of Mathematics Nankai University Tianjin China

The realization and structure of complete Lie algebras whose nilpotent radicals are Heisenberg algebras over the complex field C are given.

关键词： complete Lie algebra Heisenberg algebra nilpotent radical.

Preparation of two triflate precursors for O-(2.[^(18)F] fluoroethyl)-L-tyrosine used in positron emission tomography (PET)

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Science china Chemistry 2009年第12期52卷 2195-2199页

作者： LIU ChunYan1,2.& JIANG ShenDe1 1 School of Pharmaceutical Science and Technology,tianjin university,tianjin 3.0072,china 2.department of Pharmacy,North china Coal Medical College,Tangshan 063000,china 1. School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 China 2. department of Pharmacy North China Coal Medical College Tangshan 063000 China

Two novel triflate precursors for radiolabelling of L-tyrosine in positron emission tomography (PET) for tumor imaging,O-(2.trifluoromethanesulfonyloxyethyl)-N-(tert-butoxycarbonyl)-L-tyrosine methyl ester 9a and O-(2.trifluoromethanesulfonyloxyethyl)-N-(tert-butoxycarbonyl)-L-tyrosine tert-butyl ester 9b,are synthesized. The triflate agent,9a or 9b,is prepared by esterification of methanol or transesterification of tert-butyl acetate with L-tyrosine,protection of the amine group with di-tert-butyl dicarbonate,alkylation with chlorohydrin,and triflation with trifluoromethanesulfonic anhydride in four steps with overall yields of 30% and 15%,respectively.

关键词： positron emission tomography triflate L-tyrosine [18F]FET precursor PET imaging

UTILIZING PHASE RETARD INTEGRATION METHOD OF FLOW BIREFRINGENCE TO ANALYSE THE FLOW WITH SYMMETRIC PLANE

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Acta Mechanica Sinica 1990年第4期6卷 374-381页

作者： Chen Yuhai Jia Youquan Shu Wei (department of Mechanics,tianjin {2.,tianjin,china) 1. department of Mechanics Tianjin University Tianjin China

The formulas which are suitable to birefringent medium with symmetric plane are derived by means of phase retard *** have adopted this concept to the axisymmetric problems and deduced some useful formulas for these *** a practical application,the strain rate analysis of flow in a diverging or a converging vessel is illustrated at the end of this paper.

关键词： flow birefringence phase retard integration integral photoelasticity

Online diagnosis of electron excitation temperature in CH_4+H_2.discharge plasma at atmospheric pressure by optical emission spectra

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Science china(physics,Mechanics & Astronomy) 2008年第12期51卷 1892-1896页

作者： CUI JinHua1, XU ZhenFeng2. ZHANG JiaLiang3↑, NIE QiuYue3, XU GenHui4 & REN LongLiang5 1 Faculty of Chemistry and Chemical Engineering, Liaoning Normal university, Dalian 11602., china 2.Technique Center for Modern Education, Liaodong College, Dandong 12.709, china 3 State Key Laboratory for Materials Modification by Laser, Ion and Electron Beams, Dalian university of Technology, Dalian 11602., china 4 College of Chemical Engineering, tianjin university, tianjin 3.0072, china 5 department of physics, Science College, tianjin university, tianjin 3.0072, china 1. Faculty of Chemistry and Chemical Engineering Liaoning Normal University Dalian 116021 China 2. Technique Center for Modern Education Liaodong College Dandong 126709 China 3. State Key Laboratory for Materials Modification by Laser Ion and Electron Beams Dalian University of Technology Dalian 116023 China 4. College of Chemical Engineering Tianjin University Tianjin 300072 China 5. department of physics Science College Tianjin University Tianjin 300072 China

Methane coupling under low temperature plasmas at atmospheric pressure is a green process by use of renewable sources of energy. In this study, CH4+H2.dis- charge plasma was on-line diagnosed by optical emission spectra so as to char- acterize the discharge system and to do spade work for the optimization of the technical parameters for future commercial production of methane coupling under plasmas. The study was focused on a calculation method for the online diagnosis of the electron excitation temperature in CH4+H2.discharge plasma at atmospheric pressure. The diagnostic method is easy, efficient and fairly precise. A serious er- ror in a literature was corrected during the reasoning of its series of equations formerly used to calculate electron temperatures in plasmas.

关键词： low temperature plasma electron excitation temperature optical emission spectrum online diagnosis

RuCl_3·3H_2. Mediated Olefin Isomerizations in Ionic Liquids: A Highly Recyclable System for Olefin Isomerizations

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Chemical Research in Chinese Universities 2012年第1期28卷 67-69页

作者： SHAO Ming-bo1, LIU Gui-yan2. ZHAO Jing-jing1, WANG Xiao-yu1 and WANG Jian-hui1 1. department of Chemistry, College of Science, tianjin university,{2., P. R. china 2. tianjin Key Laboratory of Structure and Performance for Functional Molecule, College of Chemistry, tianjin Normal university, tianjin 300387, P. R. china department of Chemistry College of Science Tianjin University Tianjin 300072 College of Chemistry Tianjin Normal University Tianjin Key Laboratory of Structure and Performance for Functional Molecule Tianjin 300387

Herein lies a convenient and highly efficient method of olefin isomerization in the presence of RuCl3？3H2. in ionic liquid（IL）. More importantly, RuCl3？3H2. is a robust and recyclable catalyst. Nine cycles of RuCl... 详细信息

关键词： Ruthenium trichloride Ionic liquid Olefin isomerization

Properties of a family of merit functions and a merit function method for the NCP

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Applied Mathematics(A Journal of Chinese Universities) 2010年第4期25卷 379-390页

作者： LU Li-yong HUANG Zheng-hai HU Sheng-long department of Mathematics, School of Science, tianjin university,{2., china department of Mathematics School of Science Tianjin University Tianjin China

A family of merit functions are proposed, which are the generalization of several existing merit functions. A number of favorable properties of the proposed merit functions are established. By using these properties, a merit function method for solving nonlinear complementarity problem is investigated, and the global convergence of the proposed algorithm is proved under some standard assumptions. Some preliminary numerical results are given.

关键词： Nonlinear complementarity problem NCP-function merit function merit function method.

Induction-by-stages of Dixmier algebras and orbit datum and its application

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Chinese Science Bulletin 1998年第10期43卷 818-820页

作者： LIANG Ke department of Mathematics, Nankai university, {2. 300071, china department of Mathematics Nankai University Tianjin China

The purpose of the present note is to prove that the parabolic inductions of the orbit datum and Dixmier algebras can be induced by stages. And as an appliction, we have proved that for SO(2.+1, C), SP(2., C), F\-4 an... 详细信息

关键词： dixmier algebra orbit data representation of Lie group.

Research on analysis method for temperature control information of high arch dam construction

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Science china(Technological Sciences) 2011年第S1期54卷 40-46页

作者： ZHONG DengHua,ZHAO ChenSheng & REN BingYu department of Hydraulic and Hydroelectric Engineering,School of Civil Engineering,tianjin {2.,tianjin 3.0072,china 1. department of Hydraulic and Hydroelectric Engineering School of Civil Engineering Tianjin University Tianjin 300072 China

Temperature control,which is directly responsible for the project quality and progress,plays an important role in high arch dam *** to discover the rules from a large amount of temperature control information collected in order to guide the adjustment of temperature control measures to prevent cracks on site is the key scientific *** this paper,a mathematic logical model was built firstly by means of a coupling analysis of temperature control system decomposition and coordination for high arch ***,an analysis method for temperature control information was presented based on data mining ***,the data warehouse of temperature control was designed,and the artificial neural network forecasting model for the highest temperature of concrete was also ***,these methods were applied to a practical project. The result showed that the efficiency and precision of temperature control was improved,and rationality and scientificity of management and decision-making were *** of these researches provided an advanced analysis method for temperature control in the high arch dam construction process.

关键词： high arch dam construction temperature control information data mining data warehouse neural network model