Simultaneous dock assignment and sequencing of inbound trucks under a fixed outbound truck schedule in multi-door cross docking operations

This paper studies the simultaneous dock assignment and sequencing of inbound trucks for a multi-door cross docking operation with the objective to minimize total weighted tardiness, under a fixed outbound truck departure schedule. The problem is newly formulated and solved by six different metaheuristic algorithms, which include simulated annealing, tabu search, ant colony optimization, differential evolution, and two hybrid differential-evolution algorithms. To evaluate the total weighted tardiness associated with any given inbound-truck sequence and dock assignment, an operational policy is developed. This policy is employed by every metaheuristic algorithm in searching for the optimal dock assignment and sequence. Each metaheuristic algorithm is tested with 40 problems. The major conclusions are: (1) metaheuristic is generally an effective optimization method for the subject problem; (2) population based metaheuristic algorithms are generally more effective than projection based metaheuristic algorithms; (3) proper selection of algorithmic parameters is important and more critical for projection based metaheuristic algorithms than population based algorithms; (4) the two best algorithms are ant colony optimization and hybrid differential evolution 2; among them, ACO takes less time than hybrid 2 and thus can be declared the best among all the six metaheuristic algorithms tested.     

现代交通运输统计存在的问题和策略分析

通过对交通运输的概念和当前国内交通统计现状的分析.指出了现代交通统计中存在的几个问题;针对交通运输统计工作中的问题,给出了目标规划、统计内容、资料互补、统计技术等方面的解决策略性建议.     

Consumer evaluation of self-service innovation failure: the effect of brand equity and attribution

The purpose of this study is to examine how, when a self-service innovation fails, customers evaluate different levels of brand equity and how the brand equity effect is moderated by consumer attribution and service recovery. Based on two experimental studies, the results indicate that high-equity brands suffer less from the adverse effects of self-service innovation failures when compared with low-equity brands. However, self-service innovation failures are more detrimental to high-equity brands if they are caused by service providers' internal factors as well as low service recovery.     

Effects of litigation under the Endangered Species Act on forest firm values

The Endangered Species Act (ESA) has been a source of litigation and subject to court interpretation during the past several decades. In this study, event analysis was employed to examine the impact of six court decisions related to the ESA on the financial performance of U.S. forest products firms. The finding of abnormal returns revealed that all six events generated the expected positive or negative returns, and among them, four were statistically significant. Changes in systematic risk reflected the reaction of the stock market to the verdict announcements. Programs designed for habitat conservation can be implemented to compensate private landowners or firms for costs associated with protecting species on private forestlands.     

近年来我国总需求萎缩的体制背景分析

1996年开始的我国经济中出现的内需不足和通货紧缩，从制度经济学的角度分析，其主要原因有四个方面，一是转轨过程中投资主体与储蓄主体的分离，二是储蓄－投资转化机制的阻塞，三是转轨过程中市场格局的转变，四是转轨过程中市场主体心理的变化。     

对我国金融监管体制若干问题的探讨

货币政策的间接化趋势对金融监管提出了新的要求，日渐流行的“混业经营”则对当前的监管体制提出了新的挑战，农村信用社体制改革要求金融监管扩展范围，我国金融监管体制在新金融时代面临着新的抉择。     

公司法人人格否认原则适用的条件与限制

公司法人人格否认原则是公司法人制度的补充,这一原则旨在保护公司债权人的利益和禁止股东利用法人人格逃避法律责任。适用法人人格否认原则必须符合特定的条件:公司法人人格在形式上合法存在,出资人或股东滥用公司法人人格严重损害债权人的利益或逃避法律责任,出资人或股东实际在造成损害的范围内承担责任。应当严格掌握法人人格否认的适用条件,依照正当程序确定股东对公司的连带责任,防止滥用法人人格否认,违反公司法的基本原则。     

浅论校务公开与学校政治文明建设

本文从政治文明的角度,说明校务公开不仅是学校领导自觉接受群众监督的形式,还是人民群众的政治权利.而要使职工行使政治权力,真正实现人民当家作主和依法治校,达到物质文明、政治文明和精神文明的协调发展,必须加强党的领导,认真实践"三个代表","立党为公、执政为民".     

国有产权、公司特征与困境公司绩效

尽管众多研究表明国有产权在公司正常经营期间会降低绩效,但一旦陷入财务困境,源于国有产权的预算软约束却可以降低财务困境成本,从而有利于国有公司。本文以1999—2005年期间发生财务困境的上市公司为研究对象,发现在财务困境期间国有产权对公司绩效具有积极影响,并且当公司规模较小或者财务杠杆较高时,这种积极作用更为明显。     

交易所大宗交易流动性折价研究——来自沪深交易所的经验证据

随着证券市场规模的扩大及机构投资者规模的壮大，机构投资者对市场流动性的需求日益剧增，大宗交易制度是满足投资者流动性需求的制度性创新。由于大宗交易的数量较大，其交易价格有别于正常交易规模的价格。本文利用沪深交易所的大宗交易数据实证探讨大宗交易价格及其影响因素。研究结果表明，大部分大宗交易价格低于当日收盘价格，呈现流动性折价现象，折价率达到1．27％：研究还发现，折价水平还受交易数量、正常交易时间段股票流动性水平、市场流动性水平及股价波幅等因素影响。