In the clinical reports, the E1784K mutation in SCN5A is recognized as a phenotypic overlap between the long QT syndrome (LQT3) and the Brugada syndrome (BrS) in the characteristics of electrocardiograms (ECGs) ...In the clinical reports, the E1784K mutation in SCN5A is recognized as a phenotypic overlap between the long QT syndrome (LQT3) and the Brugada syndrome (BrS) in the characteristics of electrocardiograms (ECGs) since the mutation can influence sodium channel functions. However it is still unclear if the E1784K mutation-induced sodium ionic channel alterations account for the overlap at tissue level. Thsu, a detailed computational model is developed to underpin the functional impacts of the E1784K mutation on the action potential (AP), the effective refractory period (ERP) and the abnormal ECG. Simulation results stlggest'that the E1784K mutation-induced sodium channel alterations are insufficient to produce the phenotypic overlap between LQT3 and BrS, and the overlap may arise from the complicated effects of the E1784K mutation-induced changes in sodium channel currents with an increase of the transient outward current ITo or a decrease of the L-type calcium current ICaL .展开更多
为了实现国内城市实时天气的三维动态可视化显示,以Google Earth为二次开发平台,在.NET环境下实现系统的设计。通过调用Weather Web Service,解析得到天气信息,利用OpenGL以物理规律和粒子系统理论为依据模拟天气现象。查询时,在Google ...为了实现国内城市实时天气的三维动态可视化显示,以Google Earth为二次开发平台,在.NET环境下实现系统的设计。通过调用Weather Web Service,解析得到天气信息,利用OpenGL以物理规律和粒子系统理论为依据模拟天气现象。查询时,在Google Earth的城市界面背景上,显示出查询地点实时天气对应的天气动画。实验结果表明:该系统能够使得传统视景仿真得到的雨雪等天气效果实时更新,并且实现了天气信息与地理信息的有机叠加,具有良好的实时性和直观性。展开更多
车路协同系统是未来智能交通系统技术发展的核心,从建设车路协同系统实验平台的需求分析入手,简述了分别考虑交通流影响和通讯性能影响的车路协同环境下一体化实验平台开发的目标和功能需求,并对仿真实验平台的三种方案(即基于简化通讯...车路协同系统是未来智能交通系统技术发展的核心,从建设车路协同系统实验平台的需求分析入手,简述了分别考虑交通流影响和通讯性能影响的车路协同环境下一体化实验平台开发的目标和功能需求,并对仿真实验平台的三种方案(即基于简化通讯模型的仿真实验平台、基于交通/通讯仿真器松耦合的仿真实验平台、基于交通/通讯仿真器紧耦合的仿真实验平台)进行了对比分析,确定基于交通/通讯仿真器紧耦合的仿真实验平台为推荐方案,并以此为基础研究了基于高层体系架构(High Level of Architecture,HLA)仿真建模思想,通过整合VISSIM与NS2,实现仿真时间管理、跨平台数据交互、联邦成员互操作、仿真进程控制、应用策略灵活集成等一体化实验平台主要功能。最后以车路协同环境下交叉口速度引导为例进行了实验说明,验证了一体化实验平台的有效性。展开更多
基金Supported by the National Natural Science Foundation of China(61001167,61172149)~~
文摘In the clinical reports, the E1784K mutation in SCN5A is recognized as a phenotypic overlap between the long QT syndrome (LQT3) and the Brugada syndrome (BrS) in the characteristics of electrocardiograms (ECGs) since the mutation can influence sodium channel functions. However it is still unclear if the E1784K mutation-induced sodium ionic channel alterations account for the overlap at tissue level. Thsu, a detailed computational model is developed to underpin the functional impacts of the E1784K mutation on the action potential (AP), the effective refractory period (ERP) and the abnormal ECG. Simulation results stlggest'that the E1784K mutation-induced sodium channel alterations are insufficient to produce the phenotypic overlap between LQT3 and BrS, and the overlap may arise from the complicated effects of the E1784K mutation-induced changes in sodium channel currents with an increase of the transient outward current ITo or a decrease of the L-type calcium current ICaL .
文摘为了实现国内城市实时天气的三维动态可视化显示,以Google Earth为二次开发平台,在.NET环境下实现系统的设计。通过调用Weather Web Service,解析得到天气信息,利用OpenGL以物理规律和粒子系统理论为依据模拟天气现象。查询时,在Google Earth的城市界面背景上,显示出查询地点实时天气对应的天气动画。实验结果表明:该系统能够使得传统视景仿真得到的雨雪等天气效果实时更新,并且实现了天气信息与地理信息的有机叠加,具有良好的实时性和直观性。
文摘车路协同系统是未来智能交通系统技术发展的核心,从建设车路协同系统实验平台的需求分析入手,简述了分别考虑交通流影响和通讯性能影响的车路协同环境下一体化实验平台开发的目标和功能需求,并对仿真实验平台的三种方案(即基于简化通讯模型的仿真实验平台、基于交通/通讯仿真器松耦合的仿真实验平台、基于交通/通讯仿真器紧耦合的仿真实验平台)进行了对比分析,确定基于交通/通讯仿真器紧耦合的仿真实验平台为推荐方案,并以此为基础研究了基于高层体系架构(High Level of Architecture,HLA)仿真建模思想,通过整合VISSIM与NS2,实现仿真时间管理、跨平台数据交互、联邦成员互操作、仿真进程控制、应用策略灵活集成等一体化实验平台主要功能。最后以车路协同环境下交叉口速度引导为例进行了实验说明,验证了一体化实验平台的有效性。