基于Web Services的海洋表面温度场数据应用服务框架与实现     

何亚文  杜云艳  肖如林  侯立媛  孙晓丹 《地球科学进展》2009,24(11)

分析了海洋表面温度场数据应用研究现状,结合Web服务技术,提出了海洋表面温度场数据应用服务框架,把海温数据及应用模型均封装成Web服务,从而提高了分布式环境下,数据的互操作性、应用的可移植性及透明性.基于该框架,开发设计了"中国南海海温数据应用服务平台",该平台可以集成异构、分布式环境中的数据服务和应用服务,从而为用户提供透明的、"一站式"的海温数据Web应用,可为其它海洋信息的集成与应用提供借鉴.  相似文献   

Assessment of future water provisioning and sediment load under climate and LULC change scenarios in a peninsular river basin,India     

Manas Khan  Ashutosh Sharma  Manish Kumar Goyal 《水文科学杂志》2019,64(4):405-419

Assessment of the impact of changes in climate and land use and land cover (LULC) on ecosystem services (ES) is important for planning regional-scale strategies for sustainability and restoration of ES. The Upper Narmada River Basin (UNRB) in peninsular India has undergone rapid LULC change due to recent agricultural expansion. The impact of future climate and LULC change on ES in the UNRB is quantified and mapped using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST 3.3.0) tool. Our results show that water yield is projected to increase under climate change (about 43% for representative concentration pathway 4.5 for 2031–2040), whereas it is projected to decrease under the LULC change scenario. Sediment export is projected to increase (by 54.53%) under LULC change for 2031–2040. Under the combined effect of climate and LULC change, both water yield and sediment export are expected to increase. Climate change has a greater impact on projected water yield than LULC change, whereas LULC has greater impact on sediment export. Spatial analysis suggests a similar trend of variation in relative difference (RD) of ES in adjacent sub-basins. The quantified changes in ES provisioning will benefit future land management, particularly for operation of the Rani Avanti Bai Sagar Reservoir downstream of the UNRB.  相似文献   

网络环境下的地理信息服务集成研究   总被引：1，自引：0，他引：1  

杜云艳  冯文娟  何亚文  肖如林 《武汉大学学报(信息科学版)》2010,(3)

从Web Services的角度,根据地理信息的特殊性,研究地理信息服务的实现方法和发布策略,实现了高效的地理信息服务集成方案。  相似文献   

基于RESTful Web Services的空间数据共享     

唐旭华  邹峥嵘 《测绘科学》2010,35(4):122-124

本文分析了Web Services在空间信息服务的研究现状及存在的问题,提出基于REST风格的Web Services的空间信息服务的架构。具体探讨了基于协议SOAP、WSDL、UDDI的RPC风格Web Service的优缺点,讨论基于纯REST风格的Web Services原理、优势;并在此基础上提出面向资源的空间信息服务的架构和共享模式。  相似文献   

Implementing a knowledge system: Lessons from the global stewardship of climate services     

《Global Environmental Change》2022

Knowledge systems are mechanisms that can drive climate adaptation through the pursuits of enhancing resource sharing, collaboration, and learning, while at the same time helping to develop trust and credibility among individuals and intuitions. While these goals are widely discussed, less is known about the activities and strategies that knowledge systems undertake to achieve these goals. We analyze the Global Framework of Climate Services (GFCS) as a knowledge system organized around the translation of weather and climate information for decision-making. The GFCS brings together the World Meteorological Organization, national meteorological and hydrological services, and some of the world’s largest multilateral scientific, humanitarian, and development organizations. Our analysis draws on key informant interviews, focus groups conducted in African countries, and an online survey of GFCS participants. We describe the main activities pursued by the GFCS that shaped the vision of climate services, built capacity in national climate adaptation, and created connections among diverse actors and organizations worldwide. We show how these activities generated tensions about the purpose of the GFCS and how influence among the knowledge system was distributed. Based on our results, we illustrate new ways to conceptualize the strategies of knowledge systems, which we describe as (1) theorizing the norms of practice and mechanisms of change, (2) legitimizing actors, and (3) managing knowledge. These strategies identify pathways for, and pitfalls to, a knowledge system’s pursuit of its goals, providing guidance to managers of knowledge systems and an analytical framework to evaluate their impacts.  相似文献   

基于RIA的网络GIS的发展与应用   总被引：9，自引：0，他引：9  

王青山  汶博 《测绘科学技术学报》2006,23(2):115-118

通过对网络GIS的发展现状及其各结构模式优缺点的介绍,探讨了RIA概念模型;应用RIA技术,设计了基于RIA的网络GIS的体系结构架构,并实现了相应系统功能.该结构模式增强了客户端的用户体验感,减轻了服务器的压力.  相似文献   

基于GIS Web Services的城市污染源管理信息系统的设计与实现   总被引：2，自引：1，他引：1  

钟广锐 《测绘通报》2009,(8)

针对传统GIS存在的数据共享困难、维护成本高、开发过程复杂的缺陷,阐述Web Services技术,分析基于Web Services的GIS开发模式,并将其运用在城市污染源管理信息系统的设计与实现中,系统以Web Services的方式发布和访问数据服务,实现了污染源空间信息、属性信息的综合管理和网上发布。  相似文献   

Evaluating consumer preferences for health care services in rural Australia     

《The Australian geographer》1991,22(1):44-56

Service provision to remote rural areas is extremely costly, and only likely to be effective if the services provided are appropriate and accessible to the population. To date, little is known about the attitudes of rural residents (both townsfolk and the farming population) to various services. This study examines people's attitudes towards services generally, and health services in particular, and relates their attitudes to sociodemographic variables and geographical location. The results show the overwhelming importance attributed to health services, particularly medical services, and that attitudes differ significantly according to place of residence and by age group. These findings have major implications for those responsible for formulating policies relating to service provision for rural areas.  相似文献   

基于数据包络分析法的陕西气象资源效率评估     

罗慧  赵奎峰  巩在武  冯丽  姚东升  王百朋  张朝临 《气象》2011,37(11):1438-1442

将数据包络分析法（DEA）应用于陕西气象资源效率评估,计算全省气象行业2007—2009年运行的综合效率值、技术效率值和规模效率值,得出综合效率和规模效率有所下降,而技术效率有所提升。其中,2009年技术效率均值为3年来最高,而2007年技术效率值为3年来最低。构造基于面板数据的气象计量经济模型对各影响效率的因素进行计量分析,气象服务用户群及公众满意度指数、农业产出GDP值占区域GDP总值的比重和资金投入强度与气象部门产出的综合效率值呈正向关系,学术论文发表数量与综合效率值呈反向关系。据此提出提升资源效率有效性的对策。  相似文献   

派出所警用三维地理信息系统的设计与实现     

宫林成 《测绘与空间地理信息》2014,(3):178-180

结合项目实际,详细介绍了派出所警用三维地理信息系统的系统结构和功能模块,实现基于三维空间地理信息的资源整合、实时联动,阐述了系统研发过程中的关键技术和问题解决方法,是三维在警务领域深层次应用的一次有益尝试和探索。  相似文献