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
动态网民群体(cyber-enabled social movement organizations,CeSMOs)将是近期信息、控制、智能科学等领域的研究焦点.本文简述CeSMOs的背景、现状、趋势和意义,并提出利用基于ACP概念的计算与平行系统方法来研究动态网民群体.通过人工...动态网民群体(cyber-enabled social movement organizations,CeSMOs)将是近期信息、控制、智能科学等领域的研究焦点.本文简述CeSMOs的背景、现状、趋势和意义,并提出利用基于ACP概念的计算与平行系统方法来研究动态网民群体.通过人工组织对CeSMOs进行建模表示,采用计算实验对其进行分析评估,利用平行执行对其监控和管理.在此基础上,进一步探讨社会计算与平行系统的未来研究方向及方法.最后简要评述相关研究工作在产业发展中的可能作用及对社会演化的可能影响.展开更多
目的探索使用平视显示器(head up display,HUD)是否更加有助于飞行员探测跑道入侵事件,探索飞行员分别使用HUD和传统主飞行显示器(primary flight display,PFD)探测跑道入侵时眼动模式的差异。方法设计并开展了进近着陆情景下飞行员分...目的探索使用平视显示器(head up display,HUD)是否更加有助于飞行员探测跑道入侵事件,探索飞行员分别使用HUD和传统主飞行显示器(primary flight display,PFD)探测跑道入侵时眼动模式的差异。方法设计并开展了进近着陆情景下飞行员分别使用HUD和PFD探测跑道入侵的实验,采集注视次数、注视时间、注视轨迹和瞳孔直径等数据。结果飞行员分别使用HUD和PFD探测跑道入侵:不会显著影响俯仰姿态、航向、空速、高度、横滚、垂直速度和窗外视景兴趣域的眼动注视次数百分比和眼动注视时间百分比;使用PFD的注视轨迹更有助于探测跑道入侵;显著影响飞行员瞳孔直径。结论相比于PFD,HUD的使用不利于飞行员探测跑道入侵且易导致飞行员疲劳。展开更多
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.
文摘动态网民群体(cyber-enabled social movement organizations,CeSMOs)将是近期信息、控制、智能科学等领域的研究焦点.本文简述CeSMOs的背景、现状、趋势和意义,并提出利用基于ACP概念的计算与平行系统方法来研究动态网民群体.通过人工组织对CeSMOs进行建模表示,采用计算实验对其进行分析评估,利用平行执行对其监控和管理.在此基础上,进一步探讨社会计算与平行系统的未来研究方向及方法.最后简要评述相关研究工作在产业发展中的可能作用及对社会演化的可能影响.
文摘目的探索使用平视显示器(head up display,HUD)是否更加有助于飞行员探测跑道入侵事件,探索飞行员分别使用HUD和传统主飞行显示器(primary flight display,PFD)探测跑道入侵时眼动模式的差异。方法设计并开展了进近着陆情景下飞行员分别使用HUD和PFD探测跑道入侵的实验,采集注视次数、注视时间、注视轨迹和瞳孔直径等数据。结果飞行员分别使用HUD和PFD探测跑道入侵:不会显著影响俯仰姿态、航向、空速、高度、横滚、垂直速度和窗外视景兴趣域的眼动注视次数百分比和眼动注视时间百分比;使用PFD的注视轨迹更有助于探测跑道入侵;显著影响飞行员瞳孔直径。结论相比于PFD,HUD的使用不利于飞行员探测跑道入侵且易导致飞行员疲劳。
