采用改进遗传算法的变压器优化设计

电力机车变压器的优化设计,采用遗传算法是比较好的选择,但传统遗传算法存在一些弊端,文章从编码方式、遗传操作等几个方面探讨了如何对其进行改进,并使用Visual C++编写了一套设计软件,实践证明这种改进是有效的。     

工程项目的价值管理问题探讨——价值管理在设计-施工模式中的应用

本文介绍了建筑工程项目中应用价值管理的方法,包括实施的组织、价值体系、工程价值链和研究方法,在设计-施工模式中具体的应用。首先介绍价值管理的理论,然后分析在设计-施工模式中价值管理应用的优势,以及在这种模式中如何应用价值管理。     

Public support to innovation and imitation in a non-scale growth model

This paper studies technology policy within a version of Jones's [1995. R&D-based models of economic growth. Journal of Political Economy 103, 759–784] non-scale R&D-based growth framework that incorporates imitation of foreign techniques. In the model, imitation is the most important source of productivity growth at the beginning of the convergence process, whereas innovation dominates later on. In addition, the transitional dynamics of the model can account for well-known empirical regularities regarding the relationship between the level of economic development and public support to technology innovation and imitation. The paper shows as well that, even though policy in Jones-type non-scale models has no long-run growth effects, level effects can be substantial.     

第三方物流企业管理信息系统的结构设计与开发

本文分析了第三方物流企业的经营特点，提出了比较适合于当前和第三物流企业发展的管理信息系统结构图，并在此基础上构建了系统的软件和网络结构，最后提出了系统的数据库设计方案。     

Optimising a Probabilistic Model of the Development of Play in Soccer

We present a probabilistic model based on the one developed by Hernández Mendo and Anguera (Revista de Psicologíca Social, 16(1), 71–93, 2001). Here we have tried to break down the interaction contexts that the opposing teams are able to generate and transform during the game. We are aware that a given player or team does not produce consistent behaviour in similar situations. However, a degree of uncertainty is assumed to exist regarding whether the results obtained are a specific function of the analysis used. In order to carry out this research a category system which optimized that used in the previous model was developed. This system should enable the interaction between teams to be observed within the actual play of a soccer game. A lag sequential analysis was performed on the basis of a coding of the behavioural flow. After describing the behavioural patterns obtained a probabilistic model of the development of play in soccer is proposed.     

供应链中基于质量控制的契约模型分析

供应链中的业务外包策略充分发挥了供应链节点企业的核心竞争力，但同时存在产品质量难以控制的问题。本文通过构建以价格折扣和质保金为参数的契约模型，分析了制造商在非对称信息条件下对业务外包产品进行质量控制的最优契约设计问题。     

"轮"语——景观设计中的意象创造

“如果人们期望的是一种能够唤起丰富生动的意象的环境,那么人们也期望这种意象能够传播和适应实际变化所需,人们还期望从中发展出新的群体、新的意义和新的诗意。”本文以“轮”为象,以“轮”语之意象阐述了遵义市城市北入口景观方案设计的思路。     

我国铁路行包运输统计指标体系的基本框架研究

铁路行包运输统计指标体系是铁路行包运输统计工作的重要载体.本文分析了当前我国铁路行包运输统计指标体系存在的问题,讨论了铁路运输业统计指标体系的设计原则,设计了铁路行包运输统计指标体系的基本框架.     

In at the deep end: Conducting processual research on organisational change

This article provides a series of reflections on the practice of carrying out processual research on organisational change. At a broad level, some of the main tasks associated with conducting company case studies are described and the benefits of this approach for dealing with complex change data are outlined. At a more specific level, the article addresses three main areas tied to the actual “doing” of processual research. First, the notion of tacit knowledge and “getting your hands dirty” by engaging in ongoing in-depth fieldwork. Second, the design and implementation of a longitudinal case study research programme. Third, the advantages and concerns of combining a range of different data collecting techniques in carrying out processual studies. Overall, the main intention is to provide some useful reflections and practical insights, as well as providing something of the flavour of carrying out this type of research.     

等截面斜腿刚构桥的几何布局优化

以应力平方均值最小为优化目标，建立了跨越V形谷的等截面斜腿刚构桥在列车荷载和自重共同作用下的布局静力优化的数学模型，采用直接搜索法进行了设计变量的寻优。