系统科学与电教管理

阐述了系统科学的理论观点,为电化教育管理提供理论基础与方法     

Impact of climate change on wetland ecosystems: A critical review of experimental wetlands

Climate change is identified as a major threat to wetlands. Altered hydrology and rising temperature can change the biogeochemistry and function of a wetland to the degree that some important services might be turned into disservices. This means that they will, for example, no longer provide a water purification service and adversely they may start to decompose and release nutrients to the surface water. Moreover, a higher rate of decomposition than primary production (photosynthesis) may lead to a shift of their function from being a sink of carbon to a source. This review paper assesses the potential response of natural wetlands (peatlands) and constructed wetlands to climate change in terms of gas emission and nutrients release. In addition, the impact of key climatic factors such as temperature and water availability on wetlands has been reviewed. The authors identified the methodological gaps and weaknesses in the literature and then introduced a new framework for conducting a comprehensive mesocosm experiment to address the existing gaps in literature to support future climate change research on wetland ecosystems. In the future, higher temperatures resulting in drought might shift the role of both constructed wetland and peatland from a sink to a source of carbon. However, higher temperatures accompanied by more precipitation can promote photosynthesis to a degree that might exceed the respiration and maintain the carbon sink role of the wetland. There might be a critical water level at which the wetland can preserve most of its services. In order to find that level, a study of the key factors of climate change and their interactions using an appropriate experimental method is necessary. Some contradictory results of past experiments can be associated with different methodologies, designs, time periods, climates, and natural variability. Hence a long-term simulation of climate change for wetlands according to the proposed framework is recommended. This framework provides relatively more accurate and realistic simulations, valid comparative results, comprehensive understanding and supports coordination between researchers. This can help to find a sustainable management strategy for wetlands to be resilient to climate change.     

知识经济对现代企业的影响

从企业的生存基础,组成要素,生产方式,组织结构,管理方式等方面的变化,论述了知识经济对现代企业的影响。     

隔河岩GPS监测系统数据库管理模块的创建

介绍了隔河岩大坝ＧＰＳ自动化监测系统数据库管理模块的创建原则、结构设计、模块功能等情况,为整个自动监测系统的适时可靠、高精度监测提供了有力的保证     

学生综合测评系统的设计与实现

本文首先分析了《学生综合测评系统》的设计依据──本院现行的“学生奖学金综合测评”制度,着重介绍了如何利用VisualFoxPro语言实现综合测评全自动处理的具体方法和程序框图。     

看涨期权型理财产品的对冲策略研究

理财产品已经成为国内银行不断提升综合竞争力和盈利水平的重要业务,银行出售看涨期权型理财产品为银行的经营带来新的风险,因此需要新的风险管理方法。对理财的一款看涨期权型理财产品进行Delta对冲结果显示,虽然银行可获得正的期望盈利,但即使通过每日动态调整策略该产品仍然有接近25%的机会出现亏损,并且出现最大亏损的概率也较大。因此,对于看涨期权型理财产品,单纯通过Delta对冲策略,银行并不能实现无风险套利。     

试析我国期货公司的风险管理

阐述了我国期货公司面临的外部风险挑战,分析了建立期货公司风险控制系统的迫切性和重要性,探讨了我国期货公司的风险特征和形成原因,为期货公司建立完善的外部风险控制系统以及内部风险控制系统提供了相应对策。     

航空地面装备维修管理信息系统设计与实现

通过对航空地面装备维修管理系统的建模和对系统的功能分析,提出了采用面向对象的语言Delphi和SQL Server2000开发信息系统的设计方案。     

知识经济时代的图书馆个人知识管理

阐述了知识经济时代图书馆个人知识管理的必要性,介绍了个人知识管理的实施方法,指出图书馆应尽量为工作人员进行个人知识管理创造良好的环境。     

市场经济条件下图书馆建设的思考

分析了社会主义市场经济条件下图书馆事业发展所面临的困境,阐述了在新的形势下图书馆必须从管理思想、服务观念、服务内容、服务设施等方面进行全方位的变革。才能适应时代发展的需要。