In order to study the differences in vertical component between onshore and offshore motions,the vertical-to-horizontal peak ground acceleration ratio(V/H PGA ratio) and vertical-to-horizontal response spectral ratio(...In order to study the differences in vertical component between onshore and offshore motions,the vertical-to-horizontal peak ground acceleration ratio(V/H PGA ratio) and vertical-to-horizontal response spectral ratio(V/H) were investigated using the ground motion recordings from the K-NET network and the seafloor earthquake measuring system(SEMS).The results indicate that the vertical component of offshore motions is lower than that of onshore motions.The V/H PGA ratio of acceleration time histories at offshore stations is about 50%of the ratio at onshore stations.The V/H for offshore ground motions is lower than that for onshore motions,especially for periods less than 0.8 s.Furthermore,based on the results in statistical analysis for offshore recordings in the K-NET,the simplified V/H design equations for offshore motions in minor and moderate earthquakes are proposed for seismic analysis of offshore structures.展开更多
Based on the modern development of Metrization theorem for context,the main results obtained in recent ten years on point-discrete families are summarized.This paper mainly introduces the theory of the spaces with opo...Based on the modern development of Metrization theorem for context,the main results obtained in recent ten years on point-discrete families are summarized.This paper mainly introduces the theory of the spaces with opoint-discrete bases,the spaces with certain o-point-discrete networks,and the relationship between the above spaces and the spaces with certain o-compactfinite networks.展开更多
阐述一个能实现大型企业办公自动化的工作流系统的设计思想。该系统采用了基于.NET框架的多层体系结构,较好地体现了C#面向对象和面向组件的特性,整个系统具有良好的健壮性和可扩展性。同时介绍了在.NET平台下如何结合K2.NET进行工作流...阐述一个能实现大型企业办公自动化的工作流系统的设计思想。该系统采用了基于.NET框架的多层体系结构,较好地体现了C#面向对象和面向组件的特性,整个系统具有良好的健壮性和可扩展性。同时介绍了在.NET平台下如何结合K2.NET进行工作流应用的开发,最终实现了一个具有通用性的功能较为完善的加班费用报销审批子系统TEMA(Transport Expense and MealAllowance)。展开更多
基金Project(2011CB013605)supported by the National Basic Research Development Program of China(973 Program)Projects(51178071,51008041)supported by the National Natural Science Foundation of ChinaProject(NCET-12-0751)supported by the New Century Excellent Talents Program in University of Ministry of Education of China
文摘In order to study the differences in vertical component between onshore and offshore motions,the vertical-to-horizontal peak ground acceleration ratio(V/H PGA ratio) and vertical-to-horizontal response spectral ratio(V/H) were investigated using the ground motion recordings from the K-NET network and the seafloor earthquake measuring system(SEMS).The results indicate that the vertical component of offshore motions is lower than that of onshore motions.The V/H PGA ratio of acceleration time histories at offshore stations is about 50%of the ratio at onshore stations.The V/H for offshore ground motions is lower than that for onshore motions,especially for periods less than 0.8 s.Furthermore,based on the results in statistical analysis for offshore recordings in the K-NET,the simplified V/H design equations for offshore motions in minor and moderate earthquakes are proposed for seismic analysis of offshore structures.
文摘Based on the modern development of Metrization theorem for context,the main results obtained in recent ten years on point-discrete families are summarized.This paper mainly introduces the theory of the spaces with opoint-discrete bases,the spaces with certain o-point-discrete networks,and the relationship between the above spaces and the spaces with certain o-compactfinite networks.
文摘阐述一个能实现大型企业办公自动化的工作流系统的设计思想。该系统采用了基于.NET框架的多层体系结构,较好地体现了C#面向对象和面向组件的特性,整个系统具有良好的健壮性和可扩展性。同时介绍了在.NET平台下如何结合K2.NET进行工作流应用的开发,最终实现了一个具有通用性的功能较为完善的加班费用报销审批子系统TEMA(Transport Expense and MealAllowance)。
