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A Heuristic Method for Some NP-hard Robust Combinatorial Optimization Problems

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Systems Science and Systems Engineering 1999年第3期9卷 356-363页

作者： YANG Xiao\|guang\+1\ \ ZHU Qing\+2 1.Laboratory of Management, Decision and Information Systems Institute of Systems Science, Academia Sinica, beijing 100080, china 2.department of Mathematics, Anhui {3., Hefei 23.03., china

Assume there are several states, and the objective function f\+s(x) is linked with each state s. Robust optimization is to solve the following problem: min x∈X max s∈Sf\+s(x)where X is the feasible solution set, and S is the collection of states.\;It has been showed that most of robust combinatorial optimization problems are NP\|hard in strong sense. In this paper, we will discuss the borderline between the ′easy′ and the ′hard′ cases of robust combinatorial optimization problems, and further present a heuristic frame work to solve the ′hard′ problems and discuss their concrete implementation of the heuristic method.

关键词： robust combinatorial optimization NP\|hard heuristic method implementation

ENERGIES AND WIDTHS OF HIGH TRIPLY EXCITED STATES OF LITHIUM

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原子与分子物理学报 1998年第S1期15卷 13-14页

作者： Gou Bingcong Deng Wenshengbeijing Institute of Technology beijing 100081Kwong T.Chungdepartment of Physics, North Carolina State {3., Raleigh, NC27695, USA

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Reaction of Phenylethyne with 2,4-Pentanedione in the Presence of Manganese(Ⅲ) Acetate and Oxygen

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Chinese Chemical Letters 1997年第3期8卷 189-190页

作者： Chang YI QIAN Bo HAN Yu Fen ZHAO (department of Chemistry, Tsinghua university, beijing 100084) Yoniazu NOIRI Hiroshi NISHINO Kazu KUROSAWA (Kurokami 2-3.-1, Kumamoto 860, Japan ) department of Chemistry Tsinghua University Beijing 100084 China Kurokami 2-3.-1 Kumamoto 860 Japan

The reaction of phenylethyne with 2,4-pentanedione in the presence of manganese(Ⅲ) acetate and oxygen at room tempraure gave 4-acetyl-5-benzoyl-3.methyl-1, 2-dioxolan-3.ol, 2-acetyl-3.benzoloxirane and 3.acety-2-meth... 详细信息

关键词： Acetate and Oxygen Reaction of Phenylethyne with 2,4-Pentanedione in the Presence of Manganese MHz

Variable alternative spliced exon （VASE）-containing and VASE-lacking neural cell adhesion molecule in the dorsal and ventral hippocampus of SAMP8 mice

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Variable alternative spliced exon （VASE）-containing and VA...

中国神经科学学会第六届学术会议暨学会成立十周年庆祝大会

作者： Qin Song, Zheng Fei, Chen Gui-hai, Fang Hui, Wang Xiao-ming, Zhou Jiang-ning l.Hefei National Laboratory for Physical sciences at Microscale and department of Neurobiology, School of Life Science, university of Science and Technology of{3., Hefei,,china The First Affiliated Hospital of Anhui Medical university, Hefei,{3. Institute of Neuroscience, beijing university, beijing,{3.

＜正＞The neural cell adhesion molecule （NCAM） is involved in the development and synaptic plasticity of the brain. Differential splicing of the variable alternative spliced exon （VASE） in the fourth immunoglobulin domain can dramatically change the functional properties of NCAM. This paper discusses our analysis of the levels of different expression of VASE-containing NCAM （NCAM-VASE+） and VASE-lacking NCAM （NCAM-VASE-） mRNAs in the dorsal and ventral hippocampus of

关键词： neural cell adhesion molecule variable alternative spliced exon senescence-accelerated mouse aging learning

The Effects of Frame,Gender and Task Difficulty on Individual Crisis Decision-making

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The Effects of Frame,Gender and Task Difficulty on Individua...

中国心理学会成立90周年纪念大会暨第十四届全国心理学学术会议

作者： Zheng Jianjun~1 Yang Jiping~2 Zhang Danhui~3.Liu Hongyun~4 1 Institute of Political Science,Chinese Academy of Social sciences,beijing,10073. 2 department of Psychology,Shanxi {3.,Taiyuan,03.006 3.Institute of Psychology Statistics and Measurement,beijing Normal {3.,beijing,100875 4 School of Psychology,beijing Normal {3.,beijing,100875

The purpose of the study was to reveal the impact of framing as well as some other relative factors on process of crisis *** the study,we recruited 180 undergraduate students and graduate students as participants.A 2(gender)×2(framing)×3.(difficulty) experimental design was *** variables are the time participants spent on crisis decision-making,the ratio of creating new viewpoints,the degree of confidence and the degree of the satisfaction during the crisis decision-making process. The results showed that there was the main-effect between framing and the time participants spent on crisis decision-making,ratio of creating new viewpoints participants produced as well as gender and the task ***,the degree of confidence and satisfaction on crisis decision-making was significantly affected by framing types,the task difficulties,and gender.

关键词： Frame Gender Task difficulty Crisis decision-making

STUDY ON ADAPTIVE SLICING ALGORITHM OF FUNCTIONALLY GRADED MATERIAL COMPONENTS FOR RAPID PROTOTYPING

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STUDY ON ADAPTIVE SLICING ALGORITHM OF FUNCTIONALLY GRADED M...

2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： WANG Su, ZHU Yuming, CHEN Nanfei department of Automobile Engineering, beijing university of Aeronautics & Astronautics, beijing 100083. china

Rapid Prototyping (RP) technology involves layered manufacturing and deposition of material on a point-wise fashion or a line-wise fashion to manufacture components. It is specially suited to manufact

关键词： Rapid prototyping manufacturing adaptive slice functionally graded material components.

Electrochemical performance of LiFePO_4 cathode material for Li-ion battery

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Rare Metals 2006年第z1期25卷 62-66页

作者： LI Shuzhong LI Chao FAN Yanliang XU Jiaqiang WANG Tao YANG Shuting Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Chemical Engineering College of Chemistry and Environmental Science Henan Normal University Xinxiang 453007 China

In the search for improved materials for rechargeable lithium batteries, LiFePO4 offers interesting possibilities because of its low raw materials cost, environmental friendliness and safety. The main drawback with using the material is its poor electronic conductivity and this limitation has to be overcome. Here Al-doped LiFePO4/C composite cathode materials were prepared by a polymer-network synthesis technique. Testing of X-ray diffraction, charge-discharge, and cyclic voltammetry were carried out for its performance. Results show that Al-doped LiFePO4/C composite cathode materials have a high initial capacity, good cycle stability and excellent low temperature performance. The electrical conductivity of LiFePO4 material can be obviously improved by doping Al. The better electrochemical performances of Al-doped LiFePO4/C composite cathode materials have a connection with its conductivity.

关键词： lithium ion batteries LiFePO4 doping electrochemical performance

Development of Trusted Network and Challenges It Faces

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ZTE Communications 2008年第1期6卷 13-17页

作者： Lin Chuang 1, Wang Yuanzhuo 1, Tian Liqin 1,2 (1. department of Computer Science and Technology, Tsinghua university, beijing 100084,{3. 2. department of Computer, North{3. Institute of Science and Technology, beijing 101601,{3.)

As the information network plays a more and more important role globally, the traditional network theories and technologies, especially those related to network security, can no longer meet the network development requirements. Offering the system with secure and trusted services has become a new focus in network research. This paper first discusses the meaning of and aspects involved in the trusted network. According to this paper, the trusted network should be a network where the network’s and users’ behaviors and their results are always predicted and manageable. The trustworthiness of a network mainly involves three aspects: service provider, information transmission and terminal user. This paper also analyzes the trusted network in terms of trusted model for network/user behaviors, architecture of trusted network, service survivability and network manageability, which is designed to give ideas on solving the problems that may be faced in developing the trusted network.

关键词： Development of Trusted Network and Challenges It Faces

Structural Insight into the DIX Domain of Ccd

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Structural Insight into the DIX Domain of Ccd

2008年全国生物化学与分子生物学学术大会

作者： Yi-Tong Liu Jia-Wei Wu (department of Biological sciences and Biotechnology,Tsinghua university,{3. 100084)

Wnt signaling has a decisive role in the embryonic development controlling,in the tissue regeneration processing and in many other cellular ***,the third DIX domain containing protein in vertebrate,is believed to be a...

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