试论元杂剧“套”的形成与曲式特点

元杂剧套曲是从联章体歌曲、大曲、缠令等戏曲形式发展而来。其一本四套是从宋杂剧继承过来的。其"散—慢—中—快—慢"的曲式特点也与大曲、缠令、诸宫调一脉相承。     

广西-东盟区位优势比较分析

中国-东盟自由贸易区的建立给广西带来巨大的历史机遇和前所未有的历史挑战。广西地处我国南疆，是内地联系东南亚的“桥头堡”，在未来的中国与东盟自由贸易区建设中发挥着不可替代的作用。广西不但具有这种先天的区位优势，而且也有能力将这一区位优势转化成现实的生产力。在经济全球化和市场一体化的今天，特别是在我国加入世贸组织和即将建立东盟自由贸易区的大好机遇面前，广西的地位和优势越来越重要，在构建与东盟的物流业方面，广西将大有可为。论文分析研究了广西及东盟主要国家的基础设施，比较分析广西和东盟在物流业发展上的区位优势，展望了广西物流发展前景，并指出广西应发挥区住优势，抓住机遇，加快发展广西物流业，打造区域性国际物流基地，推进广西的社会经济快速发展。     

论建筑业企业的社会责任

建筑业是一项产业,兼有经济效益、生态效益和社会效益。文章指出了认识和强化建筑业企业社会责任的必要性,提出了培育建筑业企业社会责任的途径。     

基于改进遗传算法的生鲜加工配送中心连续选址模型

建立了生鲜加工配送中心选址连续模型，在引入监控算子的基础上，运用改进的遗传算法对模型进行求解。该模型和改进的遗传算法可有效的解决生鲜加工配送中心的选址问题。     

B2C电子商务模式下的物流配送研究

物流配送是电子商务运作的一个重要环节,在整个商务活动中起着举足轻重的作用.目前,在线交易中的信息流已通过互联网基本实现,资金流的安全也在一定程度上得到了解决,但物流仍是电子商务开展的一大瓶颈.B2C作为电子商务的运作模式之一,存在着配送不及时、配送成本高、无法送货等问题.不解决物流配送的问题,B2C模式就难以快速发展.本文针对B2C模式的特点和对物流配送的要求,提出了B2C电子商务模式下建立物流配送系统的解决思路。     

集群式库存管理

本文针对产业集群这一特征，提出了集群式库存管理技术。且该文建立了基于集群式库存管理的模型。根据该模型推导出了在产业集群中生产商分开管理原材料库存和库存管理公司管理原材料库存的库存相关成本．并进行了比较。得出如下重要结论：基于集群式库存管理的原材料库存管理的库存相关成本得到了明显降低。     

提供信用期的经济定货批量模型研究

在经典的EOQ模型基础上,考虑信用期对经济订购批量的影响,将Goyal的模型扩展到单位买价与单位卖价不同的情况,并给出了一种简单的问题求解的方法,揭示了对供应商和销售商而言两种不同的管理现象,最后,通过一个例子来说明如何应用该方法进行存货管理决策.     

BINGE DRINKING IN COLLEGE: THE IMPACT OF PRICE, AVAILABILITY, AND ALCOHOL CONTROL POLICIES

This paper estimates the effects of beer prices, alcohol availability, and policies related to driving under the influence of alcohol on drinking and binge drinking among youths and young adults. Data are from a nationally representative survey of students in U.S. colleges and universities. Separate estimates are obtained for underage male and female students, as well as for older male and female students. The estimates indicate that the drinking practices of male college students are generally insensitive to the price of beer. However, underage drinking and binge drinking by female students do respond significantly to price, although both are relatively inelastic. The results also show that strong drunk driving policies targeting youths and young adults significantly reduce drinking and binge drinking by male students. Similarly, these policies reduce drinking among female college students but appear to have little impact on their binge drinking. Instead, the results indicate that many elements of campus life (including participation in a fraternity or sorority, living on campus, and the ready availability of alcoholic beverages) are among the most important determinants of drinking and binge drinking among college students.     

Information Uncertainty and Stock Returns

There is substantial evidence of short‐term stock price continuation, which the prior literature often attributes to investor behavioral biases such as underreaction to new information. This paper investigates the role of information uncertainty in price continuation anomalies and cross‐sectional variations in stock returns. If short‐term price continuation is due to investor behavioral biases, we should observe greater price drift when there is greater information uncertainty. As a result, greater information uncertainty should produce relatively higher expected returns following good news and relatively lower expected returns following bad news. My evidence supports this hypothesis.