技术合作博弈中的政府补贴政策研究

建立了在存在政府政策保护的情况下,两个国家间的三阶段博弈模型.结果表明:(1)政府的R＆D补贴提高了企业的R＆D投资,但不会减少竞争企业的R＆D投资.而且,企业在R＆D中的投资不能影响其竞争企业的产出;(2)当几乎不存在技术交流与合作时,企业将在R＆D中过度投资;当两个企业间存在技术交流与合作时,企业在R＆D中投资不足;(3)当技术引进所占比例较大时,政府必要的补贴和保护还是必要的;当技术创新主要靠自主研发时,政府可以少补贴或者不补贴.     

QHVS-1型管理信息系统生成系统的结构与技术方法

介绍了基于软件部件化技术研制的ＱＨＶＳ－１型管理信息系统生成系统（ＭＩＳＧＳ）的结构和技术方法，较详细地阐述了各子系统的组成及业务系统生成技术，说明了它支持的系统开发方法和应用效果。     

面向21世纪的中国可持续农业

通过持续农业内涵的阐述及对建国50年来我国农业不可持续因素的分析,探讨了面向21世纪适于我国国情的现代集约持续农业发展模式,并概述其主要农业工程技术。     

Oxygen intervention in the regulation of gene expression: the photosynthetic bacterial paradigm

The means by which oxygen intervenes in gene expression has been examined in considerable detail in the metabolically versatile bacterium Rhodobacter sphaeroides. Three regulatory systems are now known in this organism, which are used singly and in combination to modulate genes in response to changing oxygen availability. The outcome of these regulatory events is that the molecular machinery is present for the cell to obtain energy by means that are best suited to prevailing conditions, while at the same time maintaining cellular redox balance. Here, we explore the dangers associated with molecular oxygen relative to the various metabolisms used by R. sphaeroides, and then present the most recent findings regarding the features and operation of each of the three regulatory systems which collectively mediate oxygen control in this organism.Received 26 June 2003; received after revision 30 July 2003; accepted 8 August 2003     

Profiling of the secreted proteins during 3T3-L1 adipocyte differentiation leads to the identification of novel adipokines

Adipose tissue is an endocrine organ capable of secreting a number of adipokines with a role in the regulation of adipose tissue and whole-body metabolism. We used two-dimensional gel electrophoresis combined with mass spectrometry to profile the secreted proteins from (pre)adipocytes. The culture medium of 3T3-L1 cells during adipocyte differentiation was screened, and 41 proteins that responded to blocking of secretion by 20°C treatment and/or brefeldin A treatment were identified. Prohibitin, stress-70 protein, and adhesion-regulating molecule 1 are reported for the first time as secreted proteins. In addition, procollagen C-proteinase enhancer protein, galectin-1, cyclophilin A and C, and SF20/IL-25 are newly identified as adipocyte secreted factors. Secretion profiles indicated a dynamic environment including an actively remodeling extracellular matrix and several factors involved in growth regulation.Received 15 June 2004; received after revision 26 July 2004; accepted 2 August 2004     

Where, when and how much: regulation of myelin proteolipid protein gene expression

The myelin proteolipid protein (PLP) gene (Plp) encodes the most abundant protein found in myelin from the central nervous system (CNS). Expression of the gene is regulated in a spatiotemporal manner with maximal levels of expression occurring in oligodendrocytes during the active myelination period of CNS development, although other cell types in the CNS as well as in the periphery can express the gene to a much lower degree. In oligodendrocytes, Plp gene expression is tightly regulated. Underexpression or overexpression of the gene has been shown to have adverse effects in humans and other vertebrates. In light of this strict control, this review provides an overview of the current knowledge of Plp gene regulation.Received 4 August 2003; received after revision 17 September 2003; accepted 24 September 2003     

面向对象技术在流域洪水预报系统中的应用

通过对现有的洪水预报系统的分析,确定了复用率低以及难于扩展是目前洪水预报应用系统在实现方面存在的普遍问题。利用面向对象的Java语言作为开发工具,进行洪水预报应用系统的开发,使系统具有较强的可扩展性和复用能力,能有效地缩短新系统的开发周期,因而是进行洪水预报系统开发的有效工具。     

A components library system model and the support tool

Component-based development needs a well-designed components library and a set of support tools. This paper presents the design and implementation of a components library system model and its support tool UMLCASE. A set of practical CASE tools is constructed. UMLCASE can use UML to design Use Case Diagram. Class Diagram etc. And it integrates with components library system.