矿物微粉对水泥基混合料抗压强度的影响

为了了解矿物微粉对混凝土性能的影响,利用可压缩堆积模型(CPM)计算了不同体系胶凝材料的堆积密实度,研究了矿物微粉级配及其相对掺量对低水胶比水泥基混合料抗压强度的影响。结果表明,胶凝材料的堆积密实度与水泥基混合料的抗压强度有很强的对应关系;当堆积密实度相差不大而化学效应相差较大时,化学效应越大,抗压强度越大。     

IMF救援方案宏观绩效的实证研究

本文采用面板数据模型和事件分析法考察了1995—2002年间接受IMF救援的韩国、泰国、罗马尼亚、墨西哥和哥伦比亚等五国的宏观经济绩效，发现IMF救援方案对受援国内部平衡指标并无明显作用，对外部平衡的恢复却起到一定的积极作用，而且这种积极的作用在接下来两年中一直有效。但通过进一步研究，叉发现这种积极作用的实现是以抑制经济的短期发展为代价的，这可能导致受援国在未来的某个时间再次需要IMF的援助。因此本文认为当前迫切地需要对IMF的救援机制进行改革。     

河西地区野菜资源的开发利用

论述了适应河西地区开发的17个科，近30个种类的野菜资源的形态特征，营养成分，食用方法以及保健功效。     

EC对商品流通企业的影响

电子商务(Electric Commerce)是商品流通领域新的商务模式，对商品流通企业的经营管理将产生重大影响，作为商品流通企业必须认识它的本质特性及其产生的影响，并在发展战略上加强重视，本主要就此两方面加以论述。     

物流活动效率化探索

着重分析了供应链物流体系如何能够降低无效的物流活动，从而实现物流活动有效的效率化以及建构供应链物流体系的要素。     

Empirical Analysis of the Market Effects of China＇s Listed—— Company＇s Dividend Policy ——Empirical Evidences from Shanghai Stock Exchange from 2004 to 2005

Dividend policy is one of the three core contents of financial management in listed companies. On one hand, it is the extension of financial and investment activities; on the other hand, appropriate dividend policy can not only set up a good company reputation, but also arouse enthusiasm of many investors to continue invest in this company, consequently acquire long and stable development opportunities and conditions. In this paper, the author has put forward some suggestions in order to solve the problems which existing in Chinese listed companies＇ dividend policies based on the result of positive test. Firstly, optimize the structure of equity title and perfect the corporate governance. Secondly, to establish wholesome shareholder protection mechanism, and also it is important measure for investors, especially medium and small investors to protect their rights and interests. According to the present situation of Chinese stock market, the authors consider we can protect the shareholder＇s benefits by carrying out cumulative vote system, establishing hortative derive lawsuit system, perfecting civil compensation system and establishing shareholder voting removing system and so on. Thirdly, the establishment of listed companies＇ dividend policy and the release of message should be standardized for the sake of good relationship of melon-cutting and corporation＇s refinancing plan. Finally, listed companies＇ dividend policy can be optimized by modifying and perfecting stock dividend distribution mode of accounting management, perfecting exit mechanism of listed companies.     

Types of firms generating network externalities and MNCs' co‐location decisions

This study identifies and examines sources of network externalities that influence MNCs to agglomerate their foreign operations in specific regions. Using data for Korean firms that invested in China, this study found that network externalities were sensitive to the types of firms constituting a regional network. It also found stronger network externalities within firms than across firms, from firms of the same nationality than from those of different nationalities, and from firms in the same industry than from those of different industries. As we defined the types of firms more precisely, distinctive curvilinear relationships between network externalities and the likelihood of co‐location emerged. Copyright © 2005 John Wiley & Sons, Ltd.     

减免农业税的长期效应与中国农业发展的对策

本文利用一个基本的内生增长模型,在均衡框架下对农业税减免政策的长期经济效应进行分析,得出农业税减免政策不影响经济增长率,只对农业部门的收入水平有着一次性影响的结论。本文提出,提高农村居民的教育水平和大幅增加非农就业机会,才是解决中国农业发展问题的根本对策。     

Joint-Product Export Smuggling and Export Tax Policy

The effect of smuggling on tax revenue collection and the revenue-maximizing tax rate is an unresolved issue in the smuggling literature. Clandestine and joint-product smuggling models arrive at different conclusions concerning smuggling's effect on tax revenue collection and the revenue-maximizing tax rate. Clandestine (joint-product) smuggling is consistent with the assumption that legal and illegal trade are substitutable (complementary) activities for the exporting firm. The effect of smuggling on the tax rate and tax revenue is shown to be dependent on whether smuggling and legal trade are assumed to be complementary or substitutable activities.     

属性重要程度的测量方法及比较研究

属性重要程度的测量对于数据库的压缩和综合评价都是非常重要的。属性重要程度的测量根据数据库形式的不同有不同方法：粗糙集理论、信息增益技术；在单向有序列联资料下的以秩效应为标准的测量方法和改进的秩和法。改进的秩和法不仅分析了属性的重要程度，而且其结果还可以进行多方面的统计分析。具有较高的实用价值。