针对数据安全对中小企业云化迁移的影响,以驱动力—压力—状态—影响—响应(driving-pressurestate-impact-response,DPSIR)概念模型为理论框架,建立中小企业云计算数据安全DPSIR模型,分析中小企业云计算数据安全风险的关联效应,采用决...针对数据安全对中小企业云化迁移的影响,以驱动力—压力—状态—影响—响应(driving-pressurestate-impact-response,DPSIR)概念模型为理论框架,建立中小企业云计算数据安全DPSIR模型,分析中小企业云计算数据安全风险的关联效应,采用决策与试验评价实验室(decision making and trial evaluation laboratory,DEMATEL)方法辨识数据安全DPSIR模型的原因因素和结果因素,并分析该模型中原因因素的中心度和原因度,研究表明中小企业云计算数据安全DPSIR模型的原因因素为P和I,结果因素为D、S和R,进一步分析得出:用户对数据不可控、全生命周期安全、安全边界不确定性是P的关键因素,管理风险、法律风险、技术风险是I的关键因素,研究结果为中小企业云计算数据安全管理预警提供了参考。展开更多
Several parameter identification methods of thermal response test were evaluated through numerical and experimental study.A three-dimensional finite-volume numerical model was established under the assumption that the...Several parameter identification methods of thermal response test were evaluated through numerical and experimental study.A three-dimensional finite-volume numerical model was established under the assumption that the soil thermal conductivity had been known in the simulation of thermal response test.The thermal response curve was firstly obtained through numerical calculation.Then,the accuracy of the numerical model was verified with measured data obtained through a thermal response test.Based on the numerical and experimental thermal response curves,the thermal conductivity of the soil was calculated by different parameter identification methods.The calculated results were compared with the assumed value and then the accuracy of these methods was evaluated.Furthermore,the effects of test time,variable data quality,borehole radius,initial ground temperature,and heat injection rate were analyzed.The results show that the method based on cylinder-source model has a low precision and the identified thermal conductivity decreases with an increase in borehole radius.For parameter estimation,the measuring accuracy of the initial temperature of the deep ground soil has greater effect on identified thermal conductivity.展开更多
文摘针对数据安全对中小企业云化迁移的影响,以驱动力—压力—状态—影响—响应(driving-pressurestate-impact-response,DPSIR)概念模型为理论框架,建立中小企业云计算数据安全DPSIR模型,分析中小企业云计算数据安全风险的关联效应,采用决策与试验评价实验室(decision making and trial evaluation laboratory,DEMATEL)方法辨识数据安全DPSIR模型的原因因素和结果因素,并分析该模型中原因因素的中心度和原因度,研究表明中小企业云计算数据安全DPSIR模型的原因因素为P和I,结果因素为D、S和R,进一步分析得出:用户对数据不可控、全生命周期安全、安全边界不确定性是P的关键因素,管理风险、法律风险、技术风险是I的关键因素,研究结果为中小企业云计算数据安全管理预警提供了参考。
基金Project(xjj20100078) supported by the Fundamental Research Funds for the Central Universities in China
文摘Several parameter identification methods of thermal response test were evaluated through numerical and experimental study.A three-dimensional finite-volume numerical model was established under the assumption that the soil thermal conductivity had been known in the simulation of thermal response test.The thermal response curve was firstly obtained through numerical calculation.Then,the accuracy of the numerical model was verified with measured data obtained through a thermal response test.Based on the numerical and experimental thermal response curves,the thermal conductivity of the soil was calculated by different parameter identification methods.The calculated results were compared with the assumed value and then the accuracy of these methods was evaluated.Furthermore,the effects of test time,variable data quality,borehole radius,initial ground temperature,and heat injection rate were analyzed.The results show that the method based on cylinder-source model has a low precision and the identified thermal conductivity decreases with an increase in borehole radius.For parameter estimation,the measuring accuracy of the initial temperature of the deep ground soil has greater effect on identified thermal conductivity.
