为解决智能交通系统(intelligent transport systems,ITS)的传统建模方法中存在难以解决的复杂问题,如不能对横切关注点进行建模、难以分离软件系统的非功能特性等,研究基于体系结构分析与设计语言(architecture analysis and design la...为解决智能交通系统(intelligent transport systems,ITS)的传统建模方法中存在难以解决的复杂问题,如不能对横切关注点进行建模、难以分离软件系统的非功能特性等,研究基于体系结构分析与设计语言(architecture analysis and design language,AADL)扩展的面向方面的建模方法在ITS上的应用。基于AADL建立路边单元系统模型,生成系统功能代码,进行流分析测试。基于扩展的AADL描述系统非功能特性,生成方面代码。实例结果表明,该方法弥补了传统建模方法的不足。展开更多
Workflow logs that record the execution of business processes offer very valuable data resource for real-time enterprise performance measurement. In this paper, a novel scheme that uses the technology of data warehous...Workflow logs that record the execution of business processes offer very valuable data resource for real-time enterprise performance measurement. In this paper, a novel scheme that uses the technology of data warehouse and OLAP to explore workflow logs and create complex analysis reports for enterprise performance measurement is proposed. Three key points of this scheme are studied: 1) the measure set; 2) the open and flexible architecture for workflow logs analysis system; 3) the data models in WFMS and data warehouse. A case study that shows the validity of the scheme is also provided.展开更多
In order to solve the problem of property test of large flow-rate safety, the property parameter of safety valve test system was analyzed, and a device for property oflarge flow-rate safety valve test was designed.The...In order to solve the problem of property test of large flow-rate safety, the property parameter of safety valve test system was analyzed, and a device for property oflarge flow-rate safety valve test was designed.The device used accumulators as power source and a united function cylinder, which can realized the large flow-rate output for the test system.Analyzed the test data and made a particular research on the test device by testing different flow-rate safety valves;it verifies that the test device can be used tode-sign larger flow-rate safety valve test system and can make the flow-rate test and analysis and dynamic characteristics for the large-flow safety valve.展开更多
As flow environment is poor in low permeability reservoirs, wells are always fractured in order to gain better economic benefits. Well testing analysis is very necessary for fracturing wells. However, available test a...As flow environment is poor in low permeability reservoirs, wells are always fractured in order to gain better economic benefits. Well testing analysis is very necessary for fracturing wells. However, available test analysis methods are of slow fitting speed and low fitting precision. In this paper, we first use a comprehensive evaluation method of analytical well testing, numerical well testing and well testing design. Many dynamic parameters such as fracture length, fracture conductivity, skin factor, etc are obtained. An example to illustrate accurate results of this method is given.展开更多
文摘为解决智能交通系统(intelligent transport systems,ITS)的传统建模方法中存在难以解决的复杂问题,如不能对横切关注点进行建模、难以分离软件系统的非功能特性等,研究基于体系结构分析与设计语言(architecture analysis and design language,AADL)扩展的面向方面的建模方法在ITS上的应用。基于AADL建立路边单元系统模型,生成系统功能代码,进行流分析测试。基于扩展的AADL描述系统非功能特性,生成方面代码。实例结果表明,该方法弥补了传统建模方法的不足。
文摘Workflow logs that record the execution of business processes offer very valuable data resource for real-time enterprise performance measurement. In this paper, a novel scheme that uses the technology of data warehouse and OLAP to explore workflow logs and create complex analysis reports for enterprise performance measurement is proposed. Three key points of this scheme are studied: 1) the measure set; 2) the open and flexible architecture for workflow logs analysis system; 3) the data models in WFMS and data warehouse. A case study that shows the validity of the scheme is also provided.
基金Supported by China Coal Research Institute Innovation Item(2007CX06)
文摘In order to solve the problem of property test of large flow-rate safety, the property parameter of safety valve test system was analyzed, and a device for property oflarge flow-rate safety valve test was designed.The device used accumulators as power source and a united function cylinder, which can realized the large flow-rate output for the test system.Analyzed the test data and made a particular research on the test device by testing different flow-rate safety valves;it verifies that the test device can be used tode-sign larger flow-rate safety valve test system and can make the flow-rate test and analysis and dynamic characteristics for the large-flow safety valve.
文摘As flow environment is poor in low permeability reservoirs, wells are always fractured in order to gain better economic benefits. Well testing analysis is very necessary for fracturing wells. However, available test analysis methods are of slow fitting speed and low fitting precision. In this paper, we first use a comprehensive evaluation method of analytical well testing, numerical well testing and well testing design. Many dynamic parameters such as fracture length, fracture conductivity, skin factor, etc are obtained. An example to illustrate accurate results of this method is given.
