斜腿刚构桥几何布局的优化设计

采用数学规划的方法从静力和动力两方面对斜腿刚构桥的几何布局进行优化设计。静力优化设计的优化目标是截面截面应力平方均值最小，动力优化设计的优化目标是结构自振周期平方和最小。采用了直接搜索法寻优。通过算例可知，这两种优化设计方法均可行，且均为刚性设计。     

基于价格的消费者信息搜寻过程研究

消费者在购买商品之前,信息搜集是一个必不可少的阶段。消费者的信息搜集过程是比较复杂的。文章通过构建信息搜寻模型,并对影响信息搜集的因素进行分析,认为产品的价格是影响信息搜集量及其持续时间的主要因素,即消费者在购买高价商品时花费的时间远远大于购买低价商品所花费的时间,并用实例进行验证。     

网络人肉搜索与侵犯个人隐私权问题研究

通过对一些有关于人肉搜索的典型案例分析的基础上，揭示了人肉搜索的运行机制。人肉搜索是一种特殊的信息搜索方式，同时也是一种新的信息生产方式。正确使用的话可以弥补机器搜索引擎的不足，但如果被滥用的话，则可能造成对个人隐私权的侵犯。     

教学方法的多向度变革——《马克思主义基本原理概论》新教材教学法的研究与实践

为了创造性地贯彻《马克思主义基本原理概论》新教材的精神，课程组制定了“共性中创个性”的教学战略，在坚持共性、弘扬共性的基础上创造个性化教学特色，创造出了“坚持集体备课，鼓励多样化教学”的教学模式。     

A Tabu Search Heuristic for the Location of Multi-Type Protection Devices on Electrical Supply Tree Networks

The problem of determining the number of multi-type protection devices and their locations on electrical supply tree networks with subtree dependency is investigated. The aim is to reduce the amount of inconvenience caused to customers that are affected by any given fault on the networks. An appropriate implementation of tabu search is proposed. We exploit a variable neighborhood and a soft aspiration level, and we embed a data structure and reduction tests into the search to speed up the process. Computational tests are performed on randomly generated electrical tree networks varying in size and branch complexity with encouraging results.     

新一代中文智能搜索引擎研究

本文主要论述了新一代中文智能搜索引擎的发展、工作原理、特点及其发展趋势     

货物运输车辆的调度算法

本文以上海煤炭公司为例,讨论了运煤车辆的计算机调度问题,提出一个数学模型及有效的近似算法。在算法实现中,采用了一些较为先进的数据结构,使运算速度及存储需求均有较大的改善。对实际算例计算结果表明,采用本算法进行运输车辆调度,经济效益比人工调度有明显的提高。     

A spanning heuristic for the unordered and ordered matching identification problem

The matching identification problem (MIP) is a combinatoric search problem related to the fields of learning from examples, boolean functions, and knowledge acquisition. The MIP involves identifying a single “goal” item from a large set of items. Because there is commonly a cost associated with evaluating each guess, the goal item should be identified in as few guesses as possible. As in most search problems, the items have a similar structure, which allows an evaluation of each guessed item. In other words, each guessed item elicits partial information about the goal item, i.e. how similar the guess is to the goal. With this information the goal is more quickly identified.The unordered MIP has been studied by Mehrez and Steinberg (ORSA J. Comput. 7 (1995) 211) in which they proposed two different types of algorithms. The purpose of the present paper is to suggest an improved Spanning Heuristic algorithm. Its improvement increases as the problem size increases. Further results and comparisons are derived for the unordered and ordered cases.This research shows that when the search space is very large, it is better to inquire from items that are known not to be the goal (they have been ruled out by previous guesses), for the purpose of acquiring more information about the goal. As the search space is narrowed, it is better to guess items that have not been ruled out.     

具有遗憾值约束的鲁棒供应链网络设计模型研究

考虑不确定性环境,研究战略层次的供应链网络鲁棒设计问题,目标是设计参数发生摄动时,供应链性能能够保持稳健性。基于鲁棒解的定义,建立从上游供应商选择到下游设施选址-需求分配的供应链网络设计鲁棒优化模型;提出确定遗憾值限定系数上限和下限的方法,允许决策者调节鲁棒水平,选择多种供应链网络结构;通过模型分解与协调,设计了供应链节点配置的禁忌搜索算法。算例的计算结果表明了禁忌搜索算法具有良好的收敛特性,以及在处理大规模问题上的优越性;同时也反映了利用鲁棒优化模型进行供应链网络设计,可以有效规避投资风险。     

启发式认知下的会计信息价值相关性研究

通过借鉴行为经济学对投资者启发式认知方式研究的发展,本文发现,目前的会计研究基本忽视了会计信息的价值相关性与投资者在短时间内的决策特征有着密切的联系,我国的一些研究成果认为上市公司的信息披露都存在"好消息早、坏消息晚"的现象,并且提出以报表发布时间的早晚采衡量及时性的观点.对此,本文结合我国特殊的制度背景,探讨了在新信息即将发布前的短时间窗口中市场反应的具体诱因,发现投资者的心态和认知过程对会计信息的价值相关性影响较大,而报表发布时间并不构成会计信息价值相关性的影响因素,我国当前制度仍存在着不利于投资者保护的潜在风险.