试论生态林业系统的时空观

生态林业系统具有时间、空间两个序列的开发前景。长周期,大跨度的生态林业生产可以分解为复合的短周期方式,使生态意识与经济效益有机结合。空间组合的多层次立体开发有效地利用了光、热、水、土资源,并获得最大生物量;地域组合着眼宏观,注重研究大型骨干及网络性生态工程问题。     

营销角度的特许经营及其竞争法上的思考

特许经营是一种新型的销售方式,作为企业分销系统的构成要素,能够起到降低风险,沟通生产与消费的作用。然而在实际经营过程中也会出现许多诸如指定购买与搭售、联合定价、独占经营等违反竞争法的问题。为适应不断变化的竞争形势,应从竞争法的层面上对其加以规制。     

On optimality in intergenerational risk sharing

Summary. This paper defines and studies optimality in a dynamic stochastic economy with finitely lived agents, and investigates the optimality properties of an equilibrium with or without sequentially complete markets. Various Pareto optimality concepts are considered, including interim and ex ante optimality. We show that, at an equilibrium with a productive asset (land) and sequentially complete markets, the intervention of a government may be justified, but only to improve risk sharing between generations. If markets are incomplete, constrained interim optimality is investigated in two-period lived OLG economies. We extend the optimality properties of an equilibrium with land and give conditions under which introducing a pay-as-you-go system at an equilibrium would not lead to any Pareto improvement. Received: October 5, 1998; revised version: April 3, 2001     

收购兼并在上市公司发展战略中的地位和实施策略

本文主要阐述了以下三个方面的问题：（1）公司为何及时从事购并交易；（2）如何使购并活动获得成功；（3）制定中国进行购并行动的战略。     

基于延迟自相关特性的码速率测量技术

通信信号的识别与解调是通信侦察的重要研究内容，在通常情况下，通信信号的很多参数并不知道。本文介绍了一种基于通信信号码延迟自相关特性的码速率测量技术，并给出了码速率测量理论分析及基于硬件的实现技术，仿真和实验结果表明本方案具有较高的测量性能。     

跨国公司在中国所筑之进入壁垒及对策

本文从规模经济、产品差异化、市场内部化和技术四个方面分析了跨国公司在中国所筑的进入壁垒的表现和成因 ,并就此提出了对策。     

关于健全独立董事制度的若干思考

入世给我国中小企业的发展带来了机遇与挑战。培育核心竞争力是其抓住机遇 ,应对挑战 ,走向成功的关键所在。文章在分析了我国中小企业面临困境的基础上 ,提出了培育我国中小企业核心竞争力 ,促进我国中小企业发展的方法和措施。     

Efficient Liability Rules: Complete Characterization

Received May, 18, 2000; revised version received March, 19, 2001     

战后日本经济发展中积极财政政策的研究

战后，在实现经济恢复和高速发展过程中，日本政府高度重视财政政策的宏观调控作用，在运用财政政策调节经济方面开辟了一条符合本国国情、突出本国特点的路子．对日本战后积极财政政策进行分析和评价，对我国经济发展具有重要的参考借鉴意义。     

The “swing of the pendulum” from public to market support for science and technology: Is the U.S. leading the way?

The structure and financing of science and technology activities are undergoing a slow, but profound, change. This change can be briefly characterized as a shift from relying and supporting public science to a stronger emphasis on “market-based” incentives for science and technology. In this paper we analyze this shift in a historical perspective, discussing both the theoretical explanations and the empirical trends of the ongoing change. While we do not claim to provide a comprehensive and exhaustive identification of the causes of this shift, we argue that it is largely driven by the perception of a shift of the U.S. policy towards market-based, rather than publicly supported, incentives for science and technology. This, in turn—given the strong economic performance of the United States over the 1990s—has influenced policies in most OECD countries, especially in Europe.We conclude by analyzing the evolution of research in U.S. higher education and find two major trends: an increasing diversity in the number of institutions of different types other than universities and a steady and continuous public funding of the leading U.S. universities. This has allowed the construction of an infrastructure now used largely by the private sector, but it also noted that the United States has not compromised public support for core areas or in those fields in which there is a clear perception that market incentives are not sufficient for meeting the strategic targets of the U.S. policy. The implication is that there is a considerable policy diversity in the U.S. practice and that all aspects of this diversity should be considered when using the United States as a reference.