气体杂质对SF6气体分解产物影响研究

对SF6气体内的氮气、水分、氧气和四氟化碳4种气体杂质在放电情况下对SF6气体分解产物的影响进行了详细的试验研究。结果表明,在低能量放电情况下,氮气和四氟化碳含量变化对SF6气体分解产物影响较小,水分和氧气杂质能促进SF6气体分解产物的生成。研究结果为通过SF6分解产物判断设备故障提供参考。     

超重力技术在6-APA生产过程中的应用研究

针对超重力技术在直通法6-APA生产过程中的应用,研究了进料温度、气液比、电机频率、真空度等条件对醋酸丁酯脱除效果的影响。结果表明,超重力技术可以用于脱酯工艺,在保证脱酯液质量的同时,使相关产品收率有所提高。     

Adverse selection in credit markets and regressive profit taxation

In many countries, taxes on businesses are less progressive than labor income taxes. This paper provides a justification for this pattern based on adverse selection that entrepreneurs face in credit markets. Individuals choose between becoming entrepreneurs or workers and differ in their skill in both of these occupations. I find that endogenous cross-subsidization in the credit market equilibrium results in excessive (insufficient) entry of low-skilled (high-skilled) agents into entrepreneurship. This gives rise to a corrective role for differential taxation of entrepreneurial profits and labor income. In particular, a profit tax that is regressive relative to taxes on labor income restores the efficient occupational choice.     

The trade-off between innovation and defense industrial policy: A simulation model analysis of the Norwegian defense industry

The paper investigates the trade-off between innovation and defense industrial policy. It presents an agent-based simulation model calibrated for the Norwegian defense industry that compares different policy scenarios and examines the effects of a pending EU market liberalization process. The paper points to two main results. (1) It finds that a pure scenario where national authorities focus on, and provide support exclusively for, either a) international competitiveness or b) national defense and security objectives, is more Pareto efficient than a corresponding mixed strategy where policy makers simultaneously pursue both international competitiveness and defense and security objectives. (2) Under the conditions of the new EU liberalization regime, it finds that a stronger and more visible trade-off will emerge between international competitiveness and national defense and security objectives. Policy makers will have to choose which to prioritize, and set a clear agenda focusing on one of the two objectives.     

关系营销在现代营销中的实施

关系营销的时代已经到来。本文探讨了关系营销与传统营销的差别,分析了关系营销在现代营销中的作用及其实施方法,构筑了基于6C理论的关系营销管理模式。     

Evaluating Projects in a Dynamic Economy: Some New Envelope Results

Abstract. This paper deals with the modern theory of social cost–benefit analysis in a dynamic economy. The theory emphasizes the role of a comprehensive, forward-looking, dynamic welfare index within the period of the project rather than that of a project's long-term consequences. However, what constitutes such a welfare index remains controversial in the recent literature. In this paper, we attempt to shed light on the issue by deriving three equivalent cost–benefit rules for evaluating a small project. In particular, we show that the direct change in a net national product (NNP) qualifies as a convenient welfare index without involving any other induced side effects. The project evaluation criterion thus becomes the present discounted value of the direct changes in NNP over the project period. We also illustrate the application of this theory in a few stylized examples.     

Investment responses to Japanese tax reforms: A cross-industry comparison

This paper examines the investment responses to past Japanese tax reforms for individual industries. To identify the tax effect, this paper estimates investment functions by using a covariate of the change in tax-adjusted q caused by tax reform. This method alleviates the measurement error problem and enables the derivation of estimates indicating the valid adjustment cost of investment. Moreover, the findings suggest that firms’ investment responded significantly to tax reforms in the 1980s in general. Also, investments of only a few industries responded to those in the late 1990s, implying that the manner of investment response slightly differs among industries.     

σ值和DPMO值转换表的质疑、修正与解读

文章从理论上探讨了σ值和DPMO值之间的转换关系,修正了现有的一些书中σ值和DPMO值转换表中的问题,从实践的角度解读了σ值和DPMO值之间的关系。     

浅谈IPv6网络下的用户管理

随着全球IPv4地址的告罄,IPv6的大规模应用已经走上舞台。由于业务与用户的迅猛增长,如何能够将IPv6建设成和IPv4网络一样安全、可管理、可运营的模式成为IPv6网络环境下新的挑战。本文结合在IPv4网络中使用的用户管理模式,探讨了IPv6网络环境下如何对网络接入用户进行控制和管理。     

下一代电子商务网络基础IPV6协议分析与研究

下一代电子商务的网络核心协议就是IPv6,在IPV4地址大量匮乏的情况下,而企业尤其是电子商务企业、电信运营商、终端用户对IP地址大量需求的情况下,IPv4过渡到IPv6势在必行。本文分析了IPv6协议,并给出企业客户部署IPv6的配置方案,并对技术发展趋势作一个展望。