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多维智能空间管理系统在会泽黑颈鹤自然保护区的实践与运用 被引量:1
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作者 陈媛 《林业调查规划》 2018年第3期111-115,共5页
基于移动GIS和WebGIS技术构建会泽黑颈鹤自然保护区多维智能空间管理系统。该系统以高清遥感影像为数据支持,将ArcGIS Server地图缓存技术融入其中,通过移动GIS进行自然保护区巡护信息采集并上传到后台服务器,采用WebGIS技术在网络客户... 基于移动GIS和WebGIS技术构建会泽黑颈鹤自然保护区多维智能空间管理系统。该系统以高清遥感影像为数据支持,将ArcGIS Server地图缓存技术融入其中,通过移动GIS进行自然保护区巡护信息采集并上传到后台服务器,采用WebGIS技术在网络客户端实时对后台服务器数据进行下载更新,从而实现移动端和网络端的信息同步。文中在操作方式、数据采集方式、采集精度、照片和视频采集以及影像分辨率等方面进行了新旧系统比对。应用效果表明,这种移动化、网络化的数据采集和管理模式,使自然保护区黑颈鹤及其越冬地的湿地生态环境保护工作更加科学、合理。 展开更多
关键词 多维智能空间管理系统 移动GIS 移动信息采集 实时监控 综合管理平台 影像分辨率 会泽黑颈鹤自然保护区
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杭州警用车进入3G时代
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《专用汽车》 2011年第6期60-60,共1页
5月6日,浙江杭州公安首批17辆移动信息采集车驶上了杭城的大街小巷。这种集采集信息、查询比对、甄别嫌疑和现场巡逻指挥于一体的新型警用车,将被布置在全城的治安复杂部位。
关键词 杭州警用车 移动信息采集 新型警用车 治安
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Improved area-difference-based recovery information placement
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作者 慈轶为 《High Technology Letters》 EI CAS 2010年第4期401-406,共6页
In mobile computing systems,message logging can be used to provide fault tolerance for mobilehosts.Due to the mobility of mobile hosts,their recovery information,including logged messages andcheckpoints,may spread thr... In mobile computing systems,message logging can be used to provide fault tolerance for mobilehosts.Due to the mobility of mobile hosts,their recovery information,including logged messages andcheckpoints,may spread throughout mobile support stations.During recovery,there will be a considerablecost for the collection of recovery information.To speed up recovery and to reduce the failure-freeoverhead,an improved area-difference-based scheme is proposed.It tries to keep recovery informationevenly spreading over an area.Only part of recovery information needs to be migrated for controlling thedistribution of recovery information.To reduce the migration cost,a light-weight migration is also proposed.In the performance study,we give an analysis of the probability that the light-weight migrationtakes place. 展开更多
关键词 FAULT-TOLERANCE recovery information placement message logging
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Offline handover location positioning for map matching of mobile probes
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作者 袁月明 关伟 《Journal of Central South University》 SCIE EI CAS 2012年第7期2067-2072,共6页
Handover location technology was employed for collecting road traffic information in a number of field projects, and the project results demonstrate that it is a supplementary and promising means of road traffic infor... Handover location technology was employed for collecting road traffic information in a number of field projects, and the project results demonstrate that it is a supplementary and promising means of road traffic information collection for further traffic supervision and maintenance. Because handover location technology is one kind of pattern matching based location technologies, offiine handovex location positioning is an essential problem to be studied for successfully matching mobile probes on GIS map. Offline handover location positioning method involves two stages, handover location positioning respectively via two weighted models and an optimized model based on the intermediate results obtained in the first stage. A preliminary field test is conducted on a stretch of freeway in the inner suburban region in Beijing, and performance evaluation results show that the proposed method is superior to standard least square model in location accuracy and location precision, which is an effective method of offline handover location positioning. 展开更多
关键词 mobile probe handover location technology offline handover location positioning
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