TSINGHUA UNIVERSITY,Beijing,China

AF:Any Field The School of Economics and Management(SEM)invites applications for positions at all levels (Lecturer(equivalent to Assistant Professor),Associate Professor and Full Professor)in any field of accounting,economics,finance,information systems,and operations management.The school offers undergraduate,Master's(including MBA)and Ph.D.programs.It provides an excellent academic environment,which is significantly enhanced recently by the arrival of Special-Term Professors who have established academic records in overseas research universities.More information about the school can be found at:http://www.sem.tsinghua.edu.cn.     

TSINGHUA UNIVERSITY,Beijing,China

正The School of Economics and Management at Tsinghua University(Tsinghua SEM)invites applications for faculty positions at all levels(Assistant Professor,Associate Professor and Full Professor)in any fields of business administration and management.Tsinghua SEM is the only school in mainland China accredited by both AACSB and EQUIS.The School offers undergraduate,     

Forbidden Subgraphs, Distance,and Hamiltonicity

ＦｏｒｂｉｄｄｅｎＳｕｂｇｒａｐｈｓ，Ｄｉｓｔａｎｃｅ，ａｎｄＨａｍｉｌｔｏｎｉｃｉｔｙＨＵＺｈｉｑｕａｎＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＨｕａｚｈｏｎｇＮｏｒｍａｌＵｎｉｖｅｒｓｉｔｙ，Ｗｕｈａｎ４３００７０Ａｂｓｔｒａｃｔ：Ａｇｒ...     

论科技,经济,社会,生态协调发展的评价体系

探讨了科技，经济，社会，生态协调发展的评价体系问题，建立了科技，经济，社会，生态协调发展评价指标体系，提出了对科技，经济，社会，生态协调发展进行综合评价的多层次模糊综合评价方法。     

Space, Time, and Their Transformations

1.IntRODUCTIONWesupPOsethata("stationary")inertialreferenceframeSOexistsinwhichMaxwell/sequationshold.AwellknownconsequenceoftheseequationsisthatthevelocityoflightinthevacuumiscinalldirectionsindependentlyoftheparticularsourcewhichgeneratedthelightsignalandthereforeinSOclocksmustbesynchronizedbyusingEinstein/sprocedure[l].Space--timevariablesxo,yo'z,'toarethusavailableinallpointsofSOandthevelocitiesofmovingbodies(andofotherinertialsystems)canbemeasured.Themostgeneralformofspace--timetr…     

ENTROPY,INFORMATION,NOISE—STUDIES ON SYSTEM EVOLUTION

Universe, ecosystem, social system, etc. are evolving systems. The evolving processes of thesesystems have gradual small changes and rapid drastic changes with uncertainties under the constraintsof environment. Systems, as a whole, are evolving toward complexity, diversity and variety withfluctuations and jumps. New order emerges from "mutations". The evolution is bothchance-dependent and path-dependent. In this paper three basics: entropy, information and noise areemphasized with regard to system evolution which is a field that can give people wisdom to solvesystem problems with domain knowledge.     

International Symposium on Symbolic and Algebraic Computation Beijing, China, July 24-27, 2005

ISSAC is an annual premier international symposium on Symbolic and Algebraic Computation that provides a forum to exchange new developments and present original research results in various areas of symbolic mathematical computation. Scheduled activities include invited presentations, research papers, poster sessions, tutorial courses, vendor exhibits and software demonstrations.     

系统理论,系统方法,系统工程—发展与展望

本文系统地综述并分析了系统理论，系统方法与系统工程的历史与现状，且在基础上进一步展望各自的未来发展趋势力争达到对系统科学总体性及和谐性的完整认识。     

FORBIDDEN SUBGRAPHS,DEGREES,NEIGHBORHOOD UNIONS AND CIRCUMFERENCES OF GRAPHS

Combining forbidden subgraphs with degree restrictions and neighborhood unionrestrictions,respectively,we prove the following results:(1) Let G be a 2-connected graph of order n,and 3≤c≤n.If for each induced subgraphL of order four of G(?)|V_1(L)∩S_c|≥2 if L≌K_(1,3),and |V(L)∩S_c|≥1 if L≌P_4,then thecircumference of G is at least c,where V_1(L)is the set of vertices with degree 1 of L,S_c isthe set of vertices with degree at least c/2 of G and P_4 is a path of order 4.(2) Let G be a 2-connected graph of order n,and n≥s+2.If for each induced subgraphL of G isomorphic to K_(1,3)or P_4,d_L(u,v)=2(?)|N(u)∪N(v)|≥s,then the circumferencec (G) of G is at least s+2.Moreover,if n≥s+3 and s is odd,then c(G)≥s+3.     

建立农业病,虫,杂草生态防治系统的探讨

本提出了农业病，虫，杂草生态防治的概念，阐述了生态防治的基本原理，并设计了生态防治系统的初步框架。     

企业信息管理系统建设方法研究：内容,发展,问题及方向

本文对企业信息管理系统建设方法进行研究，回顾了其发展过程，指出存在的问题，并提出研究方向。     

明修栈道,暗渡陈仓——多市场接触,寻租与企业绩效研究

竞争行动及其互动是动态竞争理论的重要研究分支之一.本研究以中国上市房地产企业为研究对象,将企业间竞争互动置于更符合竞争实际的多市场接触情境中,同时将行动范畴拓展到非市场领域,探讨多市场接触对企业寻租行动的影响.研究结果如下:第一,多市场接触与企业寻租之间存在倒U型关系,当多市场接触程度高过一个临界值时,相互克制效应在非市场领域产生;第二,企业寻租行为与企业绩效之间负相关,企业的寻租行为并不一定会带来企业绩效的提升;第三,企业寻租是多市场接触影响企业绩效的中介机制,当面临多市场竞争压力时,企业希望通过在非市场领域展开寻租行为提升企业绩效;第四,制度环境会削弱多市场接触对企业寻租的作用效用.上述结论表明,当企业面临多市场接触时采取的竞争策略往往是“明修栈道,暗渡陈仓”,企业间的竞争虽然在市场领域中存在相互克制效应,但背地里却企图通过非市场竞争行动发起进攻,最终导致竞争溢出到非市场领域.本文研究结论有效拓展了现阶段关于多市场竞争的理论研究,对多市场企业更好地把握企业间的竞争互动也具有一定的参考价值.     

Industrialization, Modernization and Self-Organization

Ｉｎｄｕｓｔｒｉａｌｉｚａｔｉｏｎ，ＭｏｄｅｒｎｉｚａｔｉｏｎａｎｄＳｅｌｆ－ＯｒｇａｎｉｚａｔｉｏｎＺｈｏｕＳｈｉｐｅｎｇ（ＲｅｓｅａｒｃｈＤｅｐａｒｔｍｅｎｔ５，ＢｅｉｊｉｎｇＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＥｎｇｉｎｅｅｒｉｎｇ＆Ｔｅｃｈ...