Even Unzen volcano has been declared to be in a state of relative dormancy,the latest formed lava lobe No.11 now represents a potential slope failure mass based on the latest research.This paper concentrates on the st...Even Unzen volcano has been declared to be in a state of relative dormancy,the latest formed lava lobe No.11 now represents a potential slope failure mass based on the latest research.This paper concentrates on the stability of the lava lobe No.11 and its possible critical sliding mass.It proposes geographic information systems (GIS) based three-dimensional (3D) slope stability analysis models.It uses a 3D locating approach to identify the 3D critical slip surface and to analyze the 3D stability of the lava lobe No.11.At the same time,the new 3D approach shows the effectiveness in selecting the range of the Monte Carlo random variables and locating the critical slip surface in different parts of the lava lobe No.11.The results are very valuable for judging the stability of the lava lobe and assigning the monitoring equipments.展开更多
采用客户机/服务器结构,应用Java和VRM L 2.0开发工具,设计并开发了基于因特网的虚拟校园环境,并以福建师范大学长安校区为例,建立了系统原型.利用VRG IS技术在数字校园可视化中的应用,用虚拟空间场景代替传统的抽象地图及其相应的描述...采用客户机/服务器结构,应用Java和VRM L 2.0开发工具,设计并开发了基于因特网的虚拟校园环境,并以福建师范大学长安校区为例,建立了系统原型.利用VRG IS技术在数字校园可视化中的应用,用虚拟空间场景代替传统的抽象地图及其相应的描述文件,从而以生动的模型来模拟和显示现实三维空间.以人机互动方式来实现校园三维景观的实时漫游,为校园管理和服务提供一个科学简便、形象直观的可视化人机交互平台.展开更多
基金Supported by the National Natural Science Foundation of China (40972229)provided by JSPS and Sabo Technical Center,Japan
文摘Even Unzen volcano has been declared to be in a state of relative dormancy,the latest formed lava lobe No.11 now represents a potential slope failure mass based on the latest research.This paper concentrates on the stability of the lava lobe No.11 and its possible critical sliding mass.It proposes geographic information systems (GIS) based three-dimensional (3D) slope stability analysis models.It uses a 3D locating approach to identify the 3D critical slip surface and to analyze the 3D stability of the lava lobe No.11.At the same time,the new 3D approach shows the effectiveness in selecting the range of the Monte Carlo random variables and locating the critical slip surface in different parts of the lava lobe No.11.The results are very valuable for judging the stability of the lava lobe and assigning the monitoring equipments.
文摘采用客户机/服务器结构,应用Java和VRM L 2.0开发工具,设计并开发了基于因特网的虚拟校园环境,并以福建师范大学长安校区为例,建立了系统原型.利用VRG IS技术在数字校园可视化中的应用,用虚拟空间场景代替传统的抽象地图及其相应的描述文件,从而以生动的模型来模拟和显示现实三维空间.以人机互动方式来实现校园三维景观的实时漫游,为校园管理和服务提供一个科学简便、形象直观的可视化人机交互平台.
文摘针对现有三维G IS系统以及虚拟现实系统存在的问题,基于可动态更新G IS数据开发了具备三维场景漫游、外部数据库查询和部分空间分析功能的虚拟现实系统。该文首先介绍了地理信息系统和虚拟现实的现状及其融合发展的背景,然后描述了在V isual VC++.NET开发环境及OpenGL函数库的基础上,利用Terra V ista、Mu ltiGen C reator及Vega等仿真建模、实时渲染工具建造系统的过程,并以“数字都江堰演示系统”的建设证实了其实用效果。