共查询到16条相似文献,搜索用时 109 毫秒
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根据吉林省水文数据中心建设的需要,吉林省开展水文数据库系统的设计与开发,主要从数据库系统、数据仓库系统和数据共享等3方面进行设计。根据吉林省水文数据的分类、数据库的组成,分析水文数据管理平台、信息资源目录的设计情况,从数据的抽取、转换、加载阐述吉林省数据仓库系统的建立。利用设计与开发的水文数据库系统,可实现省级水文局与部水文局、下属各水文分局、其他单位数据中心的数据汇集和交换,保证数据在各部门、机构之间的正确地传递,为当地防汛部门提供准确的水文信息。 相似文献
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为解决水文信息共享问题,本文从分析水文数据本身固有的特性出发,建立了基于空问数据仓库的具有多层维度和度量属性的水文信息共事数据模型,结合面向对象的思想,提出水文信息单元,并探计了以之建立水文信息数据仓库的方案及其信息共享后的安全性问题. 相似文献
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针对流域水文数据存在的海量、复杂、时空性等一系列特点,面向流域防洪与兴利等主题,建立了以数据层、组织层、挖掘层以及决策层为基础的流域水文数据挖掘体系,并从数据仓库、数据挖掘、元数据管理等几个方面建立了该体系的分析流程,为流域防洪和兴利业务提供了新的解决方案。将数据挖掘体系初步应用于流域的预报和调度中,证明在有充足数据的支持下.形成可行的流域预报和调度方案是合理可行的。随着数据管理、数据分析等技术日益完善.以数据仓库、数据挖掘等技术为基础的水文数据挖掘体系将逐步走向实用化。 相似文献
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构建基于数据仓库的SLDSS相关技术包括数据仓库、联机分析技术、数据挖掘等。水利决策支持系统主要包括:防汛决策支持系统、抗旱决策支持系统、水资源决策支持系统、水环境决策支持系统、水土保持决策支持系统、水利综合会商系统等。这些组成部分之间有许多交互,需要一种具有主动的行为机制、灵活的行为模式和独立的控制机制的计算实体,来建立更复杂的模型,设计和实现功能更强大的应用系统,使水利决策支持系统更好地为决策服务。 相似文献
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为了帮助决策者在防洪调度、单位运营等方面做出正确决策,有必要建立一个基于集成数据仓库的水利决策支持系统(SLDSS),以适应现阶段水利信息化的需要。介绍了基于数据仓库的SLDSS相关技术,分析了水利决策支持系统SLDSS的系统体系,以及基于数据仓库的水利决策支持系统SLDSS的系统结构形式。 相似文献
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Development of Data and Information Centre System to Improve Water Resources Management in Indonesia 总被引:1,自引:0,他引:1
Most provinces in Indonesia will be facing water scarcity problems in the next decades due to increasing water demands resulting
from population growth, urbanization and economic and industrial developments. As a consequence, they will also be facing
a number of problems with regards water resource management, such as a lack of data and information needed to evaluate the
real status of water resources, the unsystematic development of relevant infrastructure and economic instruments, inadequate
human resources for the operation and maintenance of water resources, and a lack of interest in improving research and development
activities. This paper examines the application of data and information management for improved water resources management
in Indonesia through “one door data service system” linked among the related institutions from different sectors and levels
both at the central and regional government agencies. One of the key solutions to help solve water resource problems would
therefore be to obtain supporting data and information by developing an information system and water resources data centre
(WRDC). Rapid developments in information and communication technology (ICT) could be used to support data communication and
management requests in order to build capacity of the water resources sector, and as a prerequisite for an integrated water
resources management program. Improved efficiency and effectiveness could be achieved by making relevant data and information
available, as well by establishing a communication system among related institutions. Further, provinces should also prioritize
developing human and social capital through education, service delivery and career development, as well as training for water
resources development and management. Data and information such as the hydrological and water quality data, information of
water resources potential, irrigation areas, population and economic growth as well as the others related data need to store
in both the tabular and spatial formats. The water resources data management and warehouse system is a web-enabled application
that permits spatial data to be stored with tabular data in a standard database management system. This system permits a dynamic
generation of output from the tabular and spatial data and enables users to generate answers to their queries online, rather
than simply presenting static maps and tables from the database. The WRDC applications were developed and chosen by gathering
the ideas suggested by users at the ministerial, provincial and river basin levels. Within the resulting inventory system,
information was grouped into irrigation scheme system; water resources potential; natural disaster; hydrological data and
station networks; and other information. For the users at the ministerial level access the system by using local area network
(LAN) connections and other users at the provincial and river basin levels or elsewhere in the world can use the internet
for connections and regular browser software for system operation. 相似文献
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水文数据入库质量控制是水文数据高效合理地应用于基础水利建设的重要保证.针对水文数据的特性,在综合各类质量控制方法的基础上,提出从合理性、完整性和一致性等3个方面对水文数据进行质量检查,并编写质量控制程序,以水文整编数据为测试数据进行质量控制实验,验证质量控制方法的合理性和实用性. 相似文献
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水文自动测报系统技术在我国发展很快。如何在一定区域内整合不同时间或不同承建单位建设的水文自动测报系统,提高信息资料的共享程度,增强不同系统间设备的可代换性和维护性成为现实的需求。介绍了四川省水文局制定的SCSW008-2008《水文测报系统技术规约和协议》,在四川省范围内多个水文自动测报系统中统一应用,有效解决了信息共享的问题,使水文水情信息的采集、处理效率大大提高。 相似文献
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采用美国SAS数据挖掘软件,在对我国防洪调度及水资源管理需求详尽分析的基础上,探索了数据挖掘技术在防洪调度及水资源管理方面的应用理论、方法及技术;研究了商品化数据挖掘软件与防洪调度及水资源管理需求相结合的具体方法,建立了太湖流域和中央节点的防洪调度和水资源管理数据仓库系统;分析研究了数据应用的基本模式,提出了数据挖掘的主题,运用SAS数据挖掘套件建立了基于数据仓库的防洪调度及水资源管理数据挖掘系统。 相似文献