That flow is the common feature of substance flow and fluid flow is the viewpoint emphasized in the paper. Some notes on fluid mechanics, including the two approaches of fluid flow description, were given. The concept...That flow is the common feature of substance flow and fluid flow is the viewpoint emphasized in the paper. Some notes on fluid mechanics, including the two approaches of fluid flow description, were given. The concepts of the chain and the chain group of product life cycles, which are essential for understanding the specific features of substance flow, were advanced. Taking the specific feature of substance flow into consideration, on the analogy of the two approaches in fluid mechanics, two approaches of substance flow analysis, i.e. L method and E model, were formulated. Illustrative models of steady and unsteady substance flow were sketched by both methods, and comparison between them was made in general.展开更多
This paper presents nonlinear ordinary differential equations (ODES) of the heavier pellets movement for two phase flow, which actually represent a system of equations. The usual methods of solution such as Runge -Kut...This paper presents nonlinear ordinary differential equations (ODES) of the heavier pellets movement for two phase flow, which actually represent a system of equations. The usual methods of solution such as Runge -Kutta method and it's datum results are discussed. This paper solves ODES of general form using variable mesh-length, linearizing the nonlinear terms by finite analysis method, fuilding an iteration sequence, and amending the nonlinear terms by iteration . The conditions of convergent operation of iteration solution is checked. The movement orbit and velocity of the pellets are calculated. Analysis of research results and it's application examples are illustrated.展开更多
安胜安全操作系统是自主研制的基于 Linux 的高安全等级安全操作系统,包括安全内核,安全架构与安全模型.总结了对该系统进行的隐蔽通道分析方法,首次报道基于 Linux 内核开发的安全操作系统的隐蔽通道分析结果.应用新型的“回溯方法”...安胜安全操作系统是自主研制的基于 Linux 的高安全等级安全操作系统,包括安全内核,安全架构与安全模型.总结了对该系统进行的隐蔽通道分析方法,首次报道基于 Linux 内核开发的安全操作系统的隐蔽通道分析结果.应用新型的“回溯方法”发现了某些新的隐蔽通道.对被标识的隐蔽通道,准确地计算了它们的带宽,并进行了适当的隐蔽通道处理.展开更多
文摘That flow is the common feature of substance flow and fluid flow is the viewpoint emphasized in the paper. Some notes on fluid mechanics, including the two approaches of fluid flow description, were given. The concepts of the chain and the chain group of product life cycles, which are essential for understanding the specific features of substance flow, were advanced. Taking the specific feature of substance flow into consideration, on the analogy of the two approaches in fluid mechanics, two approaches of substance flow analysis, i.e. L method and E model, were formulated. Illustrative models of steady and unsteady substance flow were sketched by both methods, and comparison between them was made in general.
文摘This paper presents nonlinear ordinary differential equations (ODES) of the heavier pellets movement for two phase flow, which actually represent a system of equations. The usual methods of solution such as Runge -Kutta method and it's datum results are discussed. This paper solves ODES of general form using variable mesh-length, linearizing the nonlinear terms by finite analysis method, fuilding an iteration sequence, and amending the nonlinear terms by iteration . The conditions of convergent operation of iteration solution is checked. The movement orbit and velocity of the pellets are calculated. Analysis of research results and it's application examples are illustrated.
文摘安胜安全操作系统是自主研制的基于 Linux 的高安全等级安全操作系统,包括安全内核,安全架构与安全模型.总结了对该系统进行的隐蔽通道分析方法,首次报道基于 Linux 内核开发的安全操作系统的隐蔽通道分析结果.应用新型的“回溯方法”发现了某些新的隐蔽通道.对被标识的隐蔽通道,准确地计算了它们的带宽,并进行了适当的隐蔽通道处理.
