A decision support system for the selection of a casting process using analytic hierarchy process

This paper presents an Analytic Hierarchy Process (AHP) based decision support system to select the most suitable casting process for a given product. The hierarchical structure of the proposed method allows the decision maker to compare the different casting processes using the material suitability and flexibility, geometrical complexity, dimensional tolerance and surface finish of the casting, and the cost as the criteria for selection. Judgemental inconsistency of the decision maker in selecting the casting process is taken care by ensuring that the value of consistency ratio is below (0.1). A numerical example is presented to illustrate the effectiveness of the proposed methodology for selecting the suitable casting process.     

高校优势学科建设工程的场域理论分析——以江苏省为例

江苏高校优势学科建设工程是地方政府推动高等教育追求卓越的精英政策之一,其目标定位、涉及范围、支持力度都是前所未有的。虽然工程权衡了学术性与功利性、效率与公平以及中央与地方的关系,但是仍然无法摆脱强化精英主义的质疑。在工程实施过程中,政治场域和学术场域的行动者和机构围绕优势学科建设同台博弈,或竞争,或合谋,最终促成优势学科建设工程的顺利实施,进而加剧了精英主义制度化的进程。破解精英主义制度化,也就是精英主义再生产的难题,一方面要实现公平正义的政策环境,制定合理公平的教育政策,同时建立必要的补偿机制;另一方面,则需要处于场域斗争中的教育机构的觉醒,来争取自身的各种权利。     

我国城市公共交通发展中存在的突出问题及对策

随着城市社会经济的快速发展，城市公交供需矛盾日益突出，公交发展中存在的突出问题阻碍了公共交通重要作用的发挥。解决好城市公共交通问题刻不容缓。就此提出了优先发展城市公共交通的若干对策。     

The impact of attitude strength on customer-oriented priority setting by decision-makers: An empirical investigation

A key question in marketing decision-making pertains to what makes decision-makers focus on various types of information in different ways. Particularly in relation to a key marketing and management variable such as customer satisfaction this is an important issue. Costly derived customer satisfaction measures need to provide customer-oriented guidance regarding where to prioritise. Traditional research on intelligence use has mainly focused on objective research attributes, such as research quality. In this article, however, we will adopt the idea that decision-makers weigh information differently based on their perception of its relevance. With respect to crucial customer satisfaction information this represents an exciting, but nevertheless unexplored field of research. The results of latent variable modelling show that the strength of decision-makers’ attitudes toward customer satisfaction leads to a differentiated usage of satisfaction intelligence. By taking this into consideration, management and intelligence providers will be able to more effectively disseminate customer satisfaction information and facilitate a more customer-oriented perspective within firms.     

绿色政治的价值诉求与理论构建:人与自然关系的政治学思考

绿色政治是20世纪60年代末70年代初以来最先在欧美发达资本主义国家形成的一种新兴政治思潮。绿色政治是源于对生态危机的审视而兴起的政治学思考,是人类对自己基本的生存和发展问题的一种反思。绿色政治以生态优先价值观为核心价值诉求,以社会正义、基层民主和非暴力为理论建构支撑,它们以生态优先价值观为主线互相联系在一起,建构绿色政治的理论体系,反映绿色政治的实质内涵,传达着一种生态智慧。     

SUFFICIENT CONDITIONS FOR A GEOMETRIC TAIL IN A QBD PROCESS WITH MANY COUNTABLE LEVELS AND PHASES

Abstract

In this paper, we present sufficient conditions, under which the stationary probability vector of a QBD process with both infinite levels and phases decays geometrically, characterized by the convergence norm η and the 1/η-left-invariant vector x of the rate matrix R. We also present a method to compute η and x based on spectral properties of the censored matrix of a matrix function constructed with the repeating blocks of the transition matrix of the QBD process. What makes this method attractive is its simplicity; finding η reduces to determining the zeros of a polynomial. We demonstrate the application of our method through a few interesting examples.     

Priority algorithms for the subset-sum problem

Greedy algorithms are simple, but their relative power is not well understood. The priority framework (Borodin et al. in Algorithmica 37:295–326, 2003) captures a key notion of “greediness” in the sense that it processes (in some locally optimal manner) one data item at a time, depending on and only on the current knowledge of the input. This algorithmic model provides a tool to assess the computational power and limitations of greedy algorithms, especially in terms of their approximability. In this paper, we study priority algorithm approximation ratios for the Subset-Sum Problem, focusing on the power of revocable decisions, for which the accepted data items can be later rejected to maintain the feasibility of the solution. We first provide a tight bound of α≈0.657 for irrevocable priority algorithms. We then show that the approximation ratio of fixed order revocable priority algorithms is between β≈0.780 and γ≈0.852, and the ratio of adaptive order revocable priority algorithms is between 0.8 and δ≈0.893. A preliminary version of this paper appeared in the Proceedings of COCOON 2007, LNCS 4598, pp. 504–514.     

论法院执行中的政府垫付工资优先权实现

面对金融危机背景下企业破产倒闭滋生的欠薪纠纷急剧增多带来的社会压力,政府往往通过垫付职工工资方式来应对。而政府垫资后其权益如何在法院执行程序中得到优先保护需要明确。通过对劳动工资优先权的各国主流立法模式的比较分析,发现我国工资优先权制度存在诸多不足,有必要予以全面完善。     

世界经济危机形势下的东北优化开发主体功能区建设方略

在实现战略转进的关键时期,东北优化开发主体功能区建设遭到了由金融危机、能源危机、粮食危机共同汇成的全球性经济危机的巨大冲击。面对现实,有必要评估世界经济危机对东北优化开发主体功能区建设的消极影响,确认东北优化开发主体功能区建设应对经济危机的综合优势,特别是需要做出东北优化开发主体功能区建设走出危机阴影的对策。     

论“义以为上”的价值根由——基于宋明儒家的视域

讲天道、重义理是中国道德文化的重要特质。宋明儒家以天为本,通过天人合一的义理构思方式来说明道德价值的合理性,这尤其体现在对“义以为上”价值原则的辩护中。他们从天人相通、天人相别、天人相宜的角度出发,集中论说了“义以为上”的道德形上根据、内在根据以及实践根据,展现了以公正为内涵、以中和为基础、以道德实践为归宿的道义原则,彰显了中国道德文化的义理特色。