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2800mm热轧线数据管理网络系统设计
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作者 冉兰 邓高潮 《铝加工》 CAS 2000年第4期30-33,共4页
针对2800mm热轧线数据管理网络系统的现状,提出了采用开关量的二进制编码方式实现MELPLAC- 550过程控制计算机与计算机管理系统之间的数据传送,着重介绍了系统的构成及通信原理。
关键词 通信 上位机 热轧线 数据管理网络系统
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HydrIS: An Open Source GIS Decision Support System for Groundwater Management (Morocco) 被引量:1
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作者 JARAR OULIDI Hassane LWNER Ralf +1 位作者 BENAABIDATE Lahcen WCHTER Joachim 《Geo-Spatial Information Science》 2009年第3期212-216,共5页
A regional groundwater management system has been elaborated, integrating Relational Database Management System (RDBMS) and various web services. It consists of web geospatial application so-called HydrlS ( Hydroge... A regional groundwater management system has been elaborated, integrating Relational Database Management System (RDBMS) and various web services. It consists of web geospatial application so-called HydrlS ( Hydrogeological Information System) based on Open Source components and technologies, leading to a feasible and low-cost solution. Therefore, HydrlS permits delivery of data from a number of heterogeneous sources to standards supported by the Open Geospatial Consortium (OGC). The protocols used for exchanging data are also derived from OGC standards, i.e., WMS (Web Mapping Service), WFS (Web Feature Service), and WCS (Web Coverage Service). Finally, a geoportal was developed, which consists of client-applications that communicate with different Web Services (WMS, WCS, and WFS) through HTTP-requests. A prototype for web-based GIS application was designed using the deegree Framework to provide systematic interfaces and functions. This system was developed to demonstrate the value of making hydrogeological data more widely accessible through client/server architecture. This experience and knowledge already gained in this project will be a source for technology transfer and policy decisions. Otherwise, this will enable user groups to improve the management of their groundwater resources and contribute to enhanced decision support capabilities. 展开更多
关键词 Open Geospatial Consortium (OGC) deegree framework database management HYDROGEOLOGY
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Researches of Remote Sensing Raster Data Management and Services
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作者 JIAO Fan ZHANG Xu 《Chinese Forestry Science and Technology》 2007年第4期73-79,共7页
The purpose of this paper is to study the RS data web services and related subjects of data storage and data management. Based on an analysis of the present situation and development trend of storage and management of... The purpose of this paper is to study the RS data web services and related subjects of data storage and data management. Based on an analysis of the present situation and development trend of storage and management of raster data and web service technology, a management and service system architecture for Remote Sensing raster data based on web service technologies was developed, the implementation methodologies of the key technology of the system were explored and a prototype of the system was illustrated. 展开更多
关键词 raster data management system web services
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