定位于突破国外跨国石油公司的技术壁垒,并能够被作为唯一平台、长期应用于中国石化的年度勘探部署与优选决策,基于最新的、面向不同层次的软件架构设计原则和软件重用技术,"油气资源一体化定量评价软件"(PetroV)的软件架构...定位于突破国外跨国石油公司的技术壁垒,并能够被作为唯一平台、长期应用于中国石化的年度勘探部署与优选决策,基于最新的、面向不同层次的软件架构设计原则和软件重用技术,"油气资源一体化定量评价软件"(PetroV)的软件架构设计做了一些积极的尝试和探索:1以多种事件响应模型和并发控制模型为代表的、面向服务的领域基础中间件设计,充分体现数据集成、应用服务协作、分布式面向对象计算与分布式数据存储的架构要求;2基于ST-based KIDA(Spatial and Temporal-based Knowledge,Information,Data and Activity)数据建模思路而封装的领域数据模型,在充分考虑时间、空间维度信息的基础上,抽象并约定了基于组合模式的领域对象模型,有助于以元数据管理(归类、过滤)模式实现库表结构的设计、大数据量存储与数据交换;3以通用工具箱接口和远程过程调用接口为代表的不同层次二次开发接口的设计,支撑不同开发环境下对后台不同服务的调用,及不同客户端应用软件框架的快速开发和集成;4由抽象接口类、工具箱类及相互之间的应用协作组成的应用软件框架设计,通过接口反转技术,能够最大程度降低不同专业软件的开发工作量。PetroV在中国石化的深入推广从侧面证明,合理的软件架构设计方法或软件重用技术是勘探开发类专业软件平台迎合大量不确定性业务需求并确保软件品质的根本前提。展开更多
The low-cost,self-configuration capability and "plug-and-play" feature of Ethernet establishes its dominant position in the local area networks(LAN).However,it is hard to extend to large scale because of the...The low-cost,self-configuration capability and "plug-and-play" feature of Ethernet establishes its dominant position in the local area networks(LAN).However,it is hard to extend to large scale because of the legacy broadcast-based service discovery mechanism.Therefore,to solve this problem,a new split network architecture named Software-Defined Networking(SDN) is introduced in this paper,and a novel floodless service discovery mechanism(FSDM)for SDN is designed.For the FSDM,the widespread broadcast messages for Dynamic Host Configuration Protocol(DHCP) and Address Resolution Protocol(ARP) are considered especially,respectively.Then the DHCP relay and ARP proxy are proposed to handle DHCP broadcast messages and ARP broadcast messages,respectively.The proposed FSDM in this paper can eliminate flooding completely,reserve the autoconfiguration characteristics.Particularly,there is no need to change the existing hardware,software and protocols of hosts for the proposed scheme.Finally,the simulation results are demonstrated to show that our proposed model allows redundant links existed in network and has the property of scalability,which can significantly reduce network traffic in data plane and control traffic in control plane,and decrease the overhead of control plane.展开更多
文摘定位于突破国外跨国石油公司的技术壁垒,并能够被作为唯一平台、长期应用于中国石化的年度勘探部署与优选决策,基于最新的、面向不同层次的软件架构设计原则和软件重用技术,"油气资源一体化定量评价软件"(PetroV)的软件架构设计做了一些积极的尝试和探索:1以多种事件响应模型和并发控制模型为代表的、面向服务的领域基础中间件设计,充分体现数据集成、应用服务协作、分布式面向对象计算与分布式数据存储的架构要求;2基于ST-based KIDA(Spatial and Temporal-based Knowledge,Information,Data and Activity)数据建模思路而封装的领域数据模型,在充分考虑时间、空间维度信息的基础上,抽象并约定了基于组合模式的领域对象模型,有助于以元数据管理(归类、过滤)模式实现库表结构的设计、大数据量存储与数据交换;3以通用工具箱接口和远程过程调用接口为代表的不同层次二次开发接口的设计,支撑不同开发环境下对后台不同服务的调用,及不同客户端应用软件框架的快速开发和集成;4由抽象接口类、工具箱类及相互之间的应用协作组成的应用软件框架设计,通过接口反转技术,能够最大程度降低不同专业软件的开发工作量。PetroV在中国石化的深入推广从侧面证明,合理的软件架构设计方法或软件重用技术是勘探开发类专业软件平台迎合大量不确定性业务需求并确保软件品质的根本前提。
基金supported by the National Basic Research Program(973)of China(No.2012CB315801)the National Natural Science Fund(No.61302089,61300184)the fundamental research funds for the Central Universities(No.2013RC0113)
文摘The low-cost,self-configuration capability and "plug-and-play" feature of Ethernet establishes its dominant position in the local area networks(LAN).However,it is hard to extend to large scale because of the legacy broadcast-based service discovery mechanism.Therefore,to solve this problem,a new split network architecture named Software-Defined Networking(SDN) is introduced in this paper,and a novel floodless service discovery mechanism(FSDM)for SDN is designed.For the FSDM,the widespread broadcast messages for Dynamic Host Configuration Protocol(DHCP) and Address Resolution Protocol(ARP) are considered especially,respectively.Then the DHCP relay and ARP proxy are proposed to handle DHCP broadcast messages and ARP broadcast messages,respectively.The proposed FSDM in this paper can eliminate flooding completely,reserve the autoconfiguration characteristics.Particularly,there is no need to change the existing hardware,software and protocols of hosts for the proposed scheme.Finally,the simulation results are demonstrated to show that our proposed model allows redundant links existed in network and has the property of scalability,which can significantly reduce network traffic in data plane and control traffic in control plane,and decrease the overhead of control plane.
