基于网络计算的农业远程分析的设计与实现

Design and application of agricultural remote analysis based on Web computation

针对网络计算需要处理分布式异构数据调用和分布式计算的问题,将网络计算中单个节点的计算环境处理成浏览器/服务器架构,采用Java数据库接口中间件、Applet与Servlet通讯以及Java类包数据签名等技术,设计了能调用和访问分布式异构数据并进行分布式计算的计算环境,在集成了常用农业生产优化模型分析和专家系统等的农业远程分析系统中,对B/S结构中的网络计算环境设计进行了实现。用于计算和推理分析的Java类包通过浏览器下载到本地运行;系统分别在Applet上给出数据库接口,供客户端连接本地或远程的不同类型数据库,实现了对分布式数据的在线分析决策。

To deal with the loading of heterogeneous and distribute database and the distribute computation in Web computation, a Web-computing environment is designed by simulating single computing cell＇s environment as a browser/server construction, and by adopting middleware of Java database interface, communication between Applet and Servlet and Digital Signature techniques of Java class packet. In the developed agricultural remote analysis system that involving some usually used optimization modeling analysis and agricultural expert system, the designed computation environment is realized.