By applying man-machine-environment system engineering theory, safety risks on large scale field operation project have been evaluated in this article. The factors concerning with the man, machine and environment in system were proposed separately. The value for lowest indexs was determined by decision-making of expert group. The weights were calculated based on AHP, and then safety risk assessment in different layers was made. The results show that the assessment method is reasonable, and it is significant for large scale field operation project safety managerment.
信息产品质量测量是信息产品质量全面管理Total Data Quality Management(TDQM)的重要组成部分,为日后信息质量提升奠定了基础。基于信息产品质量测量静态传递模型,在关系数据库基础上,"选择"关系代数作用下,引入了时间变量,分析了信息产品及时性对信息产品质量的影响,构建了信息产品质量测量动态衍变模型。该模型包括信息产品在t时刻的及时性矩阵、过时数据集质量衍变映射、基于过时数据集质量衍变映射模型的信息产品质量测量方法。利用应用实例验证了本模型的可行性和有效性。
