In this paper, we adopt Java platform to achieve a multi-tier distributed object enterprise computing model which provides an open, flexible, robust and cross-platform standard for enterprise applications of new gener...In this paper, we adopt Java platform to achieve a multi-tier distributed object enterprise computing model which provides an open, flexible, robust and cross-platform standard for enterprise applications of new generation. In addition to this model, we define remote server objects as session or entity objects according to their roles in a distributed application server, which separate information details from business operations for software reuse. A web store system is implement by using this multi-tier distributed object enterprise computing model.展开更多
为解决数据中心在电力-算力联合市场与低碳配电网协同规划中的问题,提出了一种多目标区间-随机优化方法。通过引入算力租赁机制,优化了资源利用效率与经济效益,同时降低了运营成本与碳排放。针对协同规划中的多目标优化与高维不确定性问...为解决数据中心在电力-算力联合市场与低碳配电网协同规划中的问题,提出了一种多目标区间-随机优化方法。通过引入算力租赁机制,优化了资源利用效率与经济效益,同时降低了运营成本与碳排放。针对协同规划中的多目标优化与高维不确定性问题,设计了一种基于分解的自适应约束处理区间多目标进化算法—采用两种交叉策略(adaptive constraint-handling interval multi-objective evolutionary algorithm based on decomposition with two crossover strategies,ACIMOEA/D-TCS)。该算法能够高效求解帕累托前沿,提供鲁棒性和可行性兼具的优化方案。结果表明,数据中心参与算力市场显著提高了资源利用效率和经济效益,同时有效降低了碳排放。通过对算力资源租赁与配电系统运行的优化,所提模型在经济和环境效益方面取得显著提升,为电力-算力联合市场下的协同规划问题提供了新的理论方法与解决方案。展开更多
空间信息技术和网络技术融合，形成了一个基于Internet的WebGIS热门研究课题。分析了互联网信息时代的WebGIS的几种实现方案，比较了其优缺点；提出了在微软公司的Windows DNA（Distributed interNet Application）环境下的基于DCOM（Di...空间信息技术和网络技术融合，形成了一个基于Internet的WebGIS热门研究课题。分析了互联网信息时代的WebGIS的几种实现方案，比较了其优缺点；提出了在微软公司的Windows DNA（Distributed interNet Application）环境下的基于DCOM（Distributed Component Object Model）技术的3层结构的WebGIS的系统设计与实现方案。展开更多
JAPS-Ⅱ（Java automatic parallelizing system version 2）是一个Java源代码重构编译器,用来发现和实现串行Java程序中对象内和对象间的并行性.其目标体系结构为基于工作站网络环境的分布式存储器计算机系统.介绍了JAPS-Ⅱ的体系结构...JAPS-Ⅱ（Java automatic parallelizing system version 2）是一个Java源代码重构编译器,用来发现和实现串行Java程序中对象内和对象间的并行性.其目标体系结构为基于工作站网络环境的分布式存储器计算机系统.介绍了JAPS-Ⅱ的体系结构和实现JAPS-Ⅱ的关键技术,包括用于对象并行性分析的数据流分析技术、提高对象并行性和减少运行开销的优化技术以及类重构和代码生成技术.测试结果表明,JAPS-Ⅱ能够有效地发现循环中和对象内、对象间的并行性,获得加速比.这种技术也可应用于其他面向对象语言的并行化.展开更多
With the appearance of Internet promotes GIS on both technical aspect and applied aspect,traditional GIS encounters huge blocks on Internet platform. In the field of computer ,Distributed Computing technology has seen...With the appearance of Internet promotes GIS on both technical aspect and applied aspect,traditional GIS encounters huge blocks on Internet platform. In the field of computer ,Distributed Computing technology has seen fast progress with three industrial standards. And on GIS field,openGIS Consortium has drawn a series of specifications,which,combining with the three standards,provides enterprise GIS application with foundamental facilities. The authors firstly illustrate the architectures with three models-thin clent,medium client and thick client,then present a mixed model which transfers both vector and raster data between client side and server side with the advantage of high interactivity in clinet and medium data transfer. Afterward,the authors give two enterprise schema based on two standards :COM+and EJB. Finally,the authors list some key technologies which will affect the future WebGIS-openGIS,XML, Windows. net, CORBA, EJB,etc.展开更多
文摘In this paper, we adopt Java platform to achieve a multi-tier distributed object enterprise computing model which provides an open, flexible, robust and cross-platform standard for enterprise applications of new generation. In addition to this model, we define remote server objects as session or entity objects according to their roles in a distributed application server, which separate information details from business operations for software reuse. A web store system is implement by using this multi-tier distributed object enterprise computing model.
文摘为解决数据中心在电力-算力联合市场与低碳配电网协同规划中的问题,提出了一种多目标区间-随机优化方法。通过引入算力租赁机制,优化了资源利用效率与经济效益,同时降低了运营成本与碳排放。针对协同规划中的多目标优化与高维不确定性问题,设计了一种基于分解的自适应约束处理区间多目标进化算法—采用两种交叉策略(adaptive constraint-handling interval multi-objective evolutionary algorithm based on decomposition with two crossover strategies,ACIMOEA/D-TCS)。该算法能够高效求解帕累托前沿,提供鲁棒性和可行性兼具的优化方案。结果表明,数据中心参与算力市场显著提高了资源利用效率和经济效益,同时有效降低了碳排放。通过对算力资源租赁与配电系统运行的优化,所提模型在经济和环境效益方面取得显著提升,为电力-算力联合市场下的协同规划问题提供了新的理论方法与解决方案。
文摘JAPS-Ⅱ（Java automatic parallelizing system version 2）是一个Java源代码重构编译器,用来发现和实现串行Java程序中对象内和对象间的并行性.其目标体系结构为基于工作站网络环境的分布式存储器计算机系统.介绍了JAPS-Ⅱ的体系结构和实现JAPS-Ⅱ的关键技术,包括用于对象并行性分析的数据流分析技术、提高对象并行性和减少运行开销的优化技术以及类重构和代码生成技术.测试结果表明,JAPS-Ⅱ能够有效地发现循环中和对象内、对象间的并行性,获得加速比.这种技术也可应用于其他面向对象语言的并行化.
文摘With the appearance of Internet promotes GIS on both technical aspect and applied aspect,traditional GIS encounters huge blocks on Internet platform. In the field of computer ,Distributed Computing technology has seen fast progress with three industrial standards. And on GIS field,openGIS Consortium has drawn a series of specifications,which,combining with the three standards,provides enterprise GIS application with foundamental facilities. The authors firstly illustrate the architectures with three models-thin clent,medium client and thick client,then present a mixed model which transfers both vector and raster data between client side and server side with the advantage of high interactivity in clinet and medium data transfer. Afterward,the authors give two enterprise schema based on two standards :COM+and EJB. Finally,the authors list some key technologies which will affect the future WebGIS-openGIS,XML, Windows. net, CORBA, EJB,etc.
