基于M^x/G/1排队模型的信息系统软件失效风险分析方法研究  

Research of Informaiton System Software Failure Risk Analysis Methods Based on M^x/G/1

作　　者：王兴起[1] 王维才[1] 谢宗晓[2] 丘东[1] 

机构地区：[1]北京科技大学东凌经济管理学院,北京100083 [2]南开大学商学院,天津300071

出　　处：《数学的实践与认识》2013年第7期154-160,共7页Mathematics in Practice and Theory

摘　　要：研究首先对信息系统软件节点进行数学建模,然后根据M^x/G/1排队模型及分布函数,针对信息系统软件的可靠性,给出了由威胁利用软件脆弱性所导致的信息系统节点失效,以及由此所带来的损失风险计算模型,并以银行的柜面业务系统所安装的Windows和Linux操作系统为例,给出了详细的计算过程.风险分析模型突破了目前沿用的经典六因素模型,将系统可靠性的定量分析方法引入其中,从而有效的避免了风险分析方法中对主观因素的依赖.The study constructed a mathematical modeling of information system software node in the first place. Then in terms of queuing model of Mx/G/1 and distribution function and aimed at reliability of inforlnation system software, it put forward a computation model for loss risks resulted from information system node failure because of external threat to taking advantage of software vulnerability. Besides, a detailed computational process is provided based on the example of installed systems of Windows and Linux in bank counter services. The risk analysis method has broken through the prevailing one named six-factor-model and has brought in quantitative analysis method of system reliability, thus, dependence on subjunctive factors are avoided effectively in risk analysis method.

关 键 词：信息安全 可靠性 软件失效 风险分析 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]