基于位置的服务LBS(Location Based Services)中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等...基于位置的服务LBS(Location Based Services)中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等支持还有很多问题亟待解决。该文以校园为例,在Android手机操作系统平台上,根据校园内学生和教师群体的生活规律设计并实现了基于LBS的校园个性化客户端,以期为校园内的广大师生群体提供个性化、多样化、便捷化的位置和功能服务。展开更多
The platform with bucket foundations can penetrate and migrate by underpressure/positive pressure technique caused by pumping water out/in the bucket. However, the construction process of bucket foundations cannot be ...The platform with bucket foundations can penetrate and migrate by underpressure/positive pressure technique caused by pumping water out/in the bucket. However, the construction process of bucket foundations cannot be clearly observed and effectively controlled due to the special nature of sea environment. By using an advanced simulation development tool of Multigen Creator, the visual construction simulation program for the platform with bucket foundations was developed to set up the virtual reality system with interaction control and observation in every view angle based on the secondary development technology of Vega platform. The application results show that the method is feasible and effective by simulating the whole construction process for the platform with four bucket foundations.展开更多
文摘基于位置的服务LBS(Location Based Services)中海量的信息都与地理信息息息相关,其中的核心服务是导航和地图服务。针对当前的卫星定位系统和位置服务提供商还没有足够高的精确度,LBS对小区域下如居民小区、校园、公园、旅游场所等支持还有很多问题亟待解决。该文以校园为例,在Android手机操作系统平台上,根据校园内学生和教师群体的生活规律设计并实现了基于LBS的校园个性化客户端,以期为校园内的广大师生群体提供个性化、多样化、便捷化的位置和功能服务。
基金Supported by National Natural Science Foundation of China(No.51109160)National High Technology Research and Development Program of China("863"Program,No.2012AA051705)+1 种基金International Science and Technology Cooperation Program of China(No.2012DFA70490)Tianjin Natural Science Foundation(No.13JCQNJC06900)
文摘The platform with bucket foundations can penetrate and migrate by underpressure/positive pressure technique caused by pumping water out/in the bucket. However, the construction process of bucket foundations cannot be clearly observed and effectively controlled due to the special nature of sea environment. By using an advanced simulation development tool of Multigen Creator, the visual construction simulation program for the platform with bucket foundations was developed to set up the virtual reality system with interaction control and observation in every view angle based on the secondary development technology of Vega platform. The application results show that the method is feasible and effective by simulating the whole construction process for the platform with four bucket foundations.