IS—LM模型与财政货币政策的有效性

IS—LM模型是凯恩斯理论体系的主要分析工具。本文通过对我国IS曲线斜率、LM曲线斜率的分析,我们认为很难比较出目前财政政策作用与货币政策作用的大小,而考察开放经济下的IS—LM—BP模型,我们认为财政政策在目前起主要作用,而货币政策起配合作用。     

A resilience-based model for performance evaluation of information systems: the case of a gas company

Information systems (IS) are strongly influenced by changes in new technology and should react swiftly in response to external conditions. Resilience engineering is a new method that can enable these systems to absorb changes. In this study, a new framework is presented for performance evaluation of IS that includes DeLone and McLean’s factors of success in addition to resilience. Hence, this study is an attempt to evaluate the impact of resilience on IS by the proposed model in Iranian Gas Engineering and Development Company via the data obtained from questionnaires and Fuzzy Data Envelopment Analysis (FDEA) approach. First, FDEA model with α-cut = 0.05 was identified as the most suitable model to this application by performing all Banker, Charnes and Cooper and Charnes, Cooper and Rhodes models of and FDEA and selecting the appropriate model based on maximum mean efficiency. Then, the factors were ranked based on the results of sensitivity analysis, which showed resilience had a significantly higher impact on the proposed model relative to other factors. The results of this study were then verified by conducting the related ANOVA test. This is the first study that examines the impact of resilience on IS by statistical and mathematical approaches.     

IS09000标准在高职教育质量管理中的应用

本文剖析了中国高职教育质量管理的现状,探讨了高职教育的质量观,提出在高职教育管理过程中应用IS09000标准,建立质量管理体系是推动高职教育管理工作科学化、规范化和合理化的有效途径,并探讨了其实施的可行性及应用前景。     

Product life cycle cost analysis: the impact of customer profiling, competitive advantage, and quality of IS information

Life cycle cost analysis is considered in the literature to be of increasing importance to firms as international competition intensifies and technological change continues. The literature increasingly emphasizes that rapid technological change and shortened life cycles have made product life cycle cost analysis critical to organizations. Although significant benefits are attributed to life cycle cost analysis, there is little evidence regarding the extent of its application in organizational settings. Moreover, there is scant systematic evidence available with respect to the array of factors that may influence its use. However, a review of the literature suggests that customer profiling, competitive advantage, and quality of information system information are three factors potentially impacting the extent to which life cycle cost analysis is used in firms. The results of the study illustrate first, the degree to which product life cycle cost analysis is used across a random sample of organizations. Second, that all three independent variables play a positive role in affecting the extent to which product life cycle costing is used in firms.     

信息安全:控制勿忘文化

本文论述了面对国际信息安全标准 ISO17799在全球范围内的广泛应用,我国企业在用其建立自身信息安全管理体系时所产生的疑惑和应采取的态度,并提出了组织应将自身的企业文化贯穿于整个信息安全管理体系建立的过程之中。     

HFC-SCDMA抗汇聚噪声干扰能力的重点抽样仿真

基于MATLAB6．1平台，使用重点抽样（Importance Sampling)方法，对采用SCDMA体制的HFC上行信道抗汇聚噪声干扰的性能进行仿真，仿真中常用的Monte-Carlo方法由于受SCDMA系统巨大的计算量限制而不具有实用性，重点抽样技术是一种方差减少技术，它能显著地减少运算时间，SCDMA系统仿真同样的仿真精度条件下，重点抽样与Monte-Carlo仿真相比，重点抽样技术能显著地降低运算量。     

WebGIS在旅游信息服务中的应用研究

在介绍了WebGIS及其技术特点和应用现状的基础上，着重分析了WebGIS的技术优势及其在旅游信息服务中的各个信息引导环节的主要作用，最后探讨了基于Supermap IS 2003的旅游信息服务WebGIS平台的开发实例。     

供应链信息系统应用:过去、现在和未来

依据系统的主要功能总体上将其归成功能型信息系统、综合型信息系统和集成智能型信息系统三类，同时指出这三类信息系统在供应链中的应用特点。在此基础上。总结了供应链信息系统应用的时间特征和层次特征，指出了供应链信息系统应用的过去和现在，详细分析了不同种类信息系统在供应链中的地位和作用。并指出未来供应链信息系统应用的发展趋势。