面向服务架构下主动地理信息服务模型研究     

王珂珂  张立朝  王青山 《测绘科学》2010,35(5):146-148

通过引入服务的主动发现、定制、加载与使用机制,支持新服务、新应用的按需创建,为用户发现、定制和运行能够满足用户需求的服务,从而改变当前用户只能被动地使用现有服务的应用模式,以应对信息化需求的不断发展和变化。主动型的地理信息服务在Web服务框架模型、基础协议的基础之上,增加识别用户需求和处理的能力,使用户能够根据特定需要选择合适的服务,使服务能够自动适应用户的需求。本文讨论了面向服务架构下的主动地理信息服务模型,该模型以Web服务技术为支撑,以扩展的UDDI等协议为规范,并对该模型进行测试,实验证明该模型可以有效地主动式的地理信息服务。  相似文献   

基于网络服务的地类遥感影像样本检索系统的设计与实现     

宁晓刚  张永红 《测绘科学》2010,35(1):97-98

为了有效地辅助第二次全国土地调查,对土地覆盖情况和地类遥感影像判读提供辅助,运用ASP.NET和网络服务技术,以多源遥感影像为数据源,构建了基于网络服务的地类遥感影像样本检索系统。本文重点研究了基于网络服务的地类遥感影像样本检索系统的结构、流程和功能,提出了系统的数据库表结构设计方法,为网络化遥感样本检索服务提供了解决方案。  相似文献   

Understanding marine ecosystem based management: A literature review     

Richard Curtin  Raúl Prellezo 《Marine Policy》2010

Ecosystem based management takes into account the interconnectedness and interdependent nature of ecosystem components and emphasizes the importance of ecosystem structures and functions which provide a range of services. The concept has now been adopted by many international agreements and national governments and is in the process of being implemented. This paper seeks to review the literature and to analyze the understanding of the subject. The term is defined and its implementation in fisheries and for all marine uses is analyzed. It has been concluded that to understand marine ecosystem based management one must consider ecosystems as complex adaptive systems which can show changes at higher levels from actions and processes occurring at lower levels. Recognizing that humans are part of these complex adaptive systems is vital in that their actions along with other processes can lead to transformations in ecosystem functioning. This recognition is also important to show how society can sustainably exploit these resources and that the inclusion of all stakeholders in the management process is necessary to legitimize the process. The uses of the precautionary principle along with adaptive management are seen to be useful tools in implementing these insights into the management of natural resources. Finally, the need for reducing consumption of fish is considered.  相似文献   

Scientific advice in integrated ocean management: The process towards the Barents Sea plan   总被引：1，自引：0，他引：1  

Maaike Knol   《Marine Policy》2010,34(2):252-260

It is widely held that integrated management of ocean areas needs to be based on integrated scientific advice. Such advice crosses disciplinary and traditional sector boundaries. This paper aims to provide insight into the role of science and scientific knowledge in a process towards integrated ocean management. It does so by exploring the organization of the process towards the integrated management plan for the Barents Sea-Lofoten area in Norway. It sheds light on the complexity of management questions in a context characterized by uncertainty and political controversy, largely concerning petroleum activity. Scientists were asked to provide a dynamic view on these issues and have delivered important material that furthers the task of policy development. However, there is a persisting lack of understanding about the consequences of human impact on the ecosystem. The paper finishes by pointing at the need for a larger societal discussion on what activities we consider appropriate, considering the limits of science to provide the knowledge base for questions that transcend the environmental domain.  相似文献   

Geospatial Information Service Based on Digital Measurable Image——Take Image City·Wuhan as an Example   总被引：1，自引：0，他引：1  

LI Deren  SHEN Xin State Key Laboratory of Information Engineering in Surveying  Mapping  Remote Sensing  Wuhan University  Luoyu Road  Wuhan  China 《地球空间信息科学学报》2010,(2)

LBS (location-based service) is a remarkable outcome of the development from GIS to geospatial information service. Faced by the requirements of geospatial information from the masses and the opportunity provided by the next generation Internet and Web 2.0, a new model of geospatial information service based on DMI (digital measurable image) is presented. First, the concept of LBS and the opportunities of Web 2.0 are introduced, then the characteristic of DMI is discussed. Taking the Image City·Wuhan as an ...  相似文献   

多级应急响应地理信息服务平台的应用技术     

张黎明  汤代佳  宋爱红 《测绘软科学研究》2010,(5):77-80

提出一个支持多级分布、服务级联的信息服务综合架构和集成机制,并应用于应急响应地理信息服务平台的设计,探讨了应急响应地理数据虚拟化、分布式异构环境下应急响应地理信息数据/功能服务技术、多级应急地理信息目录服务构建技术等,为构建有效的多级应急响应地理信息服务平台提供技术支撑。  相似文献   

基于网络爬虫的Web服务抓取解析器的设计与实现     

陈晓慧  陈荣国  卫文学 《测绘软科学研究》2010,(3):64-68

随着Web服务和网络技术的发展,越来越多的Web服务得以开发并发布到网络上。由于网络上存在的Web服务相互之间没有内在的必然联系,用户很难快速有效地获取和利用这些服务。本文设计了一种Web服务抓取解析器框架,包括URL抓取器、WSDL文档解析器和用于结构化存储Web服务信息的数据库等。该抓取解析器采用网络爬虫程序对互联网中的URL进行搜索,通过搜索发现分布在网络上的Web服务,并最终建立起一个关于Web服务的信息库,为共享Web服务提供条件。  相似文献   

提高基础地理信息服务水平方法研究     

郭容寰 《现代测绘》2010,33(5)

基础地理数据库的建设适应了各行业应用的需要,随着应用需求的不断深入,网络技术的不断发展,GISWeb服务已成为改变基础地理信息服务的重要手段之一,本文论述了现有基础地理数据库服务的形式及存在的问题并采用GIS Web服务对基础地理数据库的提出了要求。  相似文献   

电子政务空间信息服务:需求、技术与应用   总被引：9，自引：2，他引：7  

刘纪平  王亮 《测绘科学》2006,31(2):54-56

本文总结了空间信息服务的现状,讨论了电子政务与空间信息服务的关系,提出了电子政务空间信息服务的要求,讨论了空间信息服务关键技术,介绍了电子政务空间信息服务的应用情况。  相似文献   

基于GIS的供水管网管理与服务系统   总被引：3，自引：0，他引：3  

邬群勇  王钦敏  陈涵  刘大维 《测绘科学》2006,31(4):152-154

现有的大多数管网信息系统仅仅局限于管网信息管理或者是管网信息服务,同时管网的三维可视化能力较弱。为了实现管网信息的综合管理和服务,作者提出一个基于C/S与B/S相结合的供水管网管理与服务的计算机应用解决方案,该方案以组件式G IS实现管网信息管理,以W ebG IS实现管网信息服务,同时基于Java3D实现管网信息的三维浏览和信息查询,实现了管网信息的综合管理和服务。本文以某园区供水管网管理与服务系统的建设为例,对系统的结构与功能,数据库设计、空间数据组织以及系统开发与集成模式等方面进行了探讨。该系统从应用角度为城市地下管网的管理和服务提供了一个可行的解决方案。  相似文献