面向中小型水电机组检修的物料管理信息平台研究

物料管理在中小型水电站检修中起着至关重要的作用,根据中小型水电站检修的物料管理特点,本文分析了信息平台的功能构架,阐述了平台的用户关系、系统模式和网络结构,为进一步实现信息平台提供了重要的依据。     

Addressing the advantages of using ensemble probabilistic models in Estimation of Distribution Algorithms for scheduling problems

Estimation of Distribution Algorithms (EDAs) have recently been recognized as a prominent alternative to traditional evolutionary algorithms due to their increasing popularity. The core of EDAs is a probabilistic model which directly impacts performance of the algorithm. Previous EDAs have used a univariate, bi-variate, or multi-variable probabilistic model each time. However, application of only one probabilistic model may not represent the parental distribution well. This paper advocates the importance of using ensemble probabilistic models in EDAs. We combine the univariate probabilistic model with the bi-variate probabilistic model which learns different population characteristics. To explain how to employ the two probabilistic models, we proposed the Ensemble Self-Guided Genetic Algorithm (eSGGA). The extensive computation results on two NP-hard scheduling problems indicate the advantages of adopting two probabilistic models. Most important of all, eSGGA can avoid the computation effort overhead when compared with other EDAs employing two models. As a result, this paper might point out a next generation approach for EDAs.     

借助事件营销 打造企业品牌──以“快乐购”为例

本文章从＂快乐购＂四年的品牌发展历程中分析了其品牌建构策略的精髓在于事件营销。快乐购通过明星策、节目策、公益策、热点策和活动策等五大事件营销策略打造了良好的企业品牌形象。快乐购事件营销策略的经验可以总结为＂天时、地利、人和＂,对于其他企业开展事件营销富于启示。     

高职高专数学课程教学有效性的思考

提高高职高专数学课堂教学有效性的策略与方法包括：改变学生的学习心理,更新教育观念;结合学生的职业岗位需求,优化课程结构内容;迎合学生的学习需求,改革教学方法并完善教学手段;适应学生个性的发展,突出学生的主体地位;提升学生的个人参与意识,重视学生在学习中的回报率;融入数学文化的教学,提高学生的数学素养;督促学生良好习惯的养成,勉强的灌输有时是需要。     

微波处理废水方法概况

综述了利用微波处理技术进行废水处理的几种应用方式,包括微波直接辐射处理法、微波作用于废水和活性炭(或其他物质)处理方法及微波与催化氧化相结合的废水处理方法。同时指出了利用微波技术处理废水的优缺点与展望。     

案例引领,任务驱动在机械CAD/CAM教学中的应用

如何才能更好的提高教学效果,是我们每个老师都需要面对的问题。在中职数控专业机械CAD/CAM中采用案例引领,任务驱动,提高了学生的学习兴趣,增强了学生的学习信心,培养了学生的创新能力、自学能力、合作能力。     

制度环境与过度投资——来自中国上市公司的经验证据

以我国特有的制度环境为出发点研究企业过度投资行为,分别分析了我国各地区的政府干预、法治和金融发展对上市公司过度投资行为的影响。研究结果表明,政府干预程度与企业过度投资成正相关,法治、金融发展水平与企业的过度投资成负相关,企业外部制度环境的改善会制约企业的过度投资行为。进一步的研究发现,与法治和金融发展相比,政府干预是影响企业过度投资行为更为基本的因素。     

Did Vietnam veterans get sicker in the 1990s? The complicated effects of military service on self-reported health

The veterans disability compensation (VDC) program, which provides a monthly stipend to disabled veterans, is the third largest American disability insurance program. Since the late 1990s, VDC growth has been driven primarily by an increase in claims from Vietnam veterans, raising concerns about costs as well as health. We use the draft lottery to study the long-term effects of Vietnam-era military service on health and work in the 2000 Census. We find no evidence that military service affected overall employment rates or overall work-limiting disability rates (that is, health conditions that make work difficult). At the same time, military service sharply increased federal transfer income, especially for lower skilled white men, among whom there was also a large negative impact on employment and a marked increase in disability rates. The differential impact of Vietnam-era service on low-skilled men cannot be explained by more combat or war-theatre exposure for the least educated, because high school graduates were at least as likely to be exposed to combat or war theatre as the less-educated. This leaves the relative attractiveness of VDC for less-skilled men and the work disincentives embedded in the VDC system as a likely explanation for our findings.     

Are multinationals exporting jobs? The case of Taiwan

Does offshore production always result in job exportation? Using firm‐level data for Taiwanese multinationals that allow us to avoid reverse causality issues, this paper finds that while increasing offshore production has a negative impact on the demand for domestic manufacturing workers, this is not the case for domestic research and development workers who are often more skilled. The results also suggest that for Taiwan, there is geographical fragmentation of production activities in such a way that more skilled jobs are maintained domestically and less‐skilled jobs are exported to other developing countries. These findings confirm the prediction of the knowledge‐capital model.     

江苏沿海地区城市化现状及存在问题浅析

2009年江苏沿海开发上升为国家战略。为了解该地区的发展态势,本文立足城市化视角,具体分析了该地区城市化现状及存在问题。通过客观考察,本研究发现该地区面临一些困境,包括城市化率偏低、城市经济薄弱、社会事业滞后、城市间分工合作不够协调等。不过,总体上江苏沿海面临的机遇依然多于挑战。