Fuzzy modelling of static system optimum traffic assignment problem having multi origin-destination pair

Traffic congestion is an unpreventable problem to avoid in a transportation network and it has negative effects on traffic accident, time wasting, traffic delay and safety problem. Besides, in transportation networks, drivers do not want to deal with traffic jam while traversing between specified origin-destination pair. Therefore, traffic assignment (TA) is imperative to improve traffic management, transportation safety, time, and cost savings. System Optimum Traffic Assignment Problem (SOTAP) is a kind of TA model which aims to minimize the total system travel time on the network, and satisfies the flow conservation constraints. To model the SOTAP more realistically, the imprecise parameters can be taken as fuzzy. Therefore, in this paper, we focus on converting the conventional SOTAP to a fuzzy quadratic programming problem (QPP) which is named System Optimum Fuzzy Traffic Assignment Problem (SOFTAP). Here, link travel time is expressed with BPR function as generally used in the literature by converting to fuzzy except link-dependent parameters. Thus, the nonlinear objective function of SOFTAP is expressed in terms of fuzzy link flows and fuzzy link travel times. A solution approach from the literature is modified to the reconstructed SOFTAP.     

不同财务管理目标下业绩评价选择及其关系处理

从财务管理目标出发考察企业业绩评价方法的演变过程，是为了在它们之间建立一种联系。不同的财务管理目标下，企业的业绩评价选择会有很大的差异，而其总体趋势是选择综合业绩评价方法。在不同的财务管理目标下选择不同的业绩评价指标时，又要处理好三对关系：短期发展与长期发展、局部利益与全局利益、财务指标与非财务指标。     

When to accept a sequence of gambles

When is a sequence of gambles, which is initially rejected eventually accepted? The eventual acceptance is defined as a pair property between the utility function and the sequences of gambles. A sequence of gambles is accepted when the gambles follow a large deviation principle and the utility function is non-satiated and bounded from below in a certain way. The number of gambles required for acceptance is computed.     

高技术企业业绩评价指标体系的五维度框架设计

业绩评价已成为政府、市场和企业普遍关注的现实问题，指标体系是业绩评价的基础，指标体系构建的好坏直接影响到业绩评价的效果。高技术企业业绩的评价应结合高技术企业的特点，构建财务、产品与技术创新、智力资本开发、价值链流程、可持续发展五个维度的评价指标体系。     

MTS在CSI测评中的应用

在顾客满意度指数测评理论中，引入马田系统的思想，通过相对与理想态基准空间马氏距离的比较，并通过定义典型的质量子模式，根据择近原则，可快速实现顾客满意度指数测评的质量模式识别。     

Probability theory in fuzzy sample spaces

This paper tries to develop a neat and comprehensive probability theory for sample spaces where the events are fuzzy subsets of The investigations are focussed on the discussion how to equip those sample spaces with suitable -algebras and metrics. In the end we can point out a unified concept of random elements in the sample spaces under consideration which is linked with compatible metrics to express random errors. The result is supported by presenting a strong law of large numbers, a central limit theorem and a Glivenko-Cantelli theorem for these kinds of random elements, formulated simultaneously w.r.t. the selected metrics. As a by-product the line of reasoning, which is followed within the paper, enables us to generalize as well as to bring together already known results and concepts from literature.Acknowledgement. The author would like to thank the participants of the 23rd Linz Seminar on Fuzzy Set Theory for the intensive discussion of the paper. Especially he is indebted to Professors Diamond and Höhle whose remarks have helped to get deeper insights into the subject. Additionally, the author is grateful to one anonymous referee for careful reading and valuable proposals which have led to an improvement of the first draft.This paper was presented at the 23rd Linz Seminar on Fuzzy Set Theory, Linz, Austria, February 5–9, 2002.     

各种指数基金模型的实证比较分析

在指数基金管理方面，存在着多种优化的指数投资组合的构建方法和绩效评估方法，本文以实证研究的形式，比较分析了由5种“选股”方法和5种“资金配置”方法所构成的25种投资组合在各种绩效评估方法下的表现。最终得出结论认为，在遗传算法下利用DMinMax模型配置资产权重将具有较好的投资绩效。     

如何设计中国顾客满意指数调查问卷

中国顾客满意指数作为一种新的质量业绩衡量指标,能够有效地反映我国企业、行业、国民经济中的各部门以及整个国民经济的质量状况。问卷设计是中国顾客满意指数调查的关键环节。文章结合中国顾客满意指数调查的特点,对设计调查问卷的原则、方法及问卷设计过程中需要注意的问题进行了探讨。     

对EWS模型中金融危机界定的比较研究 ——利用EVT理论

对主要金融危机预警模型中货币危机指标(货币压力指数)与阈值的确定方式进行比较分析,之后利用EVT对EMPI的尾部进行估计,同时确定新的个体阈值,并与原模型的结果进行对比。发现不同的EW S模型确定的危机时间有较大差异,各种方法在危机的判断上存在分歧;三种主要EW S模型中的EMPI在统计上表现出较强的非正态性。     

建立中国-东盟自由贸易区对中国农产品出口的影响及其对策

针对中国与东盟农产品贸易的现状,采用显性比较优势分析中国农产品的优势,以及CAFTA的建立对中国农产品出口的影响,就如何扩大中国农产品出口提出了对策和建议。