A hardware/software co-synthesis method is presented for SoC designs consisting of both hardware IP cores and software components on a graph-theoretic formulation. Given a SoC integrated with a set of functions and a ...A hardware/software co-synthesis method is presented for SoC designs consisting of both hardware IP cores and software components on a graph-theoretic formulation. Given a SoC integrated with a set of functions and a set of performance factors, a core for each function is selected from a set of alternative IP cores and software components, and optimal partitions is found in a way to evenly balance the performance factors and to ultimately reduce the overall cost, size, power consumption and runtime of the core-based SoC. The algorithm formulates IP cores and components into the corresponding mathematical models, presents a graph-theoretic model for finding the optimal partitions of SoC design and transforms SoC hardware/software co-synthesis problem into finding optimal paths in a weighted, directed graph. Overcoming the three main deficiencies of the traditional methods, this method can work automatically, evaluate more performance factors at the same time and meet the particularity of SoC designs. At last, the approach is illustrated that is practical and effective through partitioning a practical system.展开更多
The key ingredient for promoting software reuse in a repository base integrated development environment, is to provide support for the software developer who wants to search the repository to locate and retrieve suit...The key ingredient for promoting software reuse in a repository base integrated development environment, is to provide support for the software developer who wants to search the repository to locate and retrieve suitable software components for reuse. This paper presents that reusable software components form a base to provide a flexible representation of component adaptability to any repository with a specific classification. As an alternative, it proposes to automatically identify and convert the component source code with all its information into a standard form, so that components can be transferred from one type of library to another.展开更多
This paper focuses on Distributed Object Oriented Software Engineering over Internet, which is a way to build software culture. We believe that our work will contribute to better understanding of how to meet the nee...This paper focuses on Distributed Object Oriented Software Engineering over Internet, which is a way to build software culture. We believe that our work will contribute to better understanding of how to meet the needs of the big potential software market and to promote the software industry in developing country. The United States and Western Europe have well established software industry and related civilization. Software science, technology, and engineering are needed in China; however, maybe what is needed, first of all, is software civilization, including software ideas, customs, skills, arts, etc. We will draw a framework for the software culture as following: Software is the most important commodity in this age; Brilliance of hardware component era has become past fact; A software component era is ahead; Traditional linear process model is obsolete; Modern software engineering has a new face, object evolution model; Distributed object oriented software engineering over Internet is an approach to software component era; and Complete software civilization will be formed all over the world in next century.展开更多
This paper describes an approach for Grid service component mining in object-oriented legacy systems, applying software clustering, architecture recovery, program slicing and wrapping techniques to decompose a legacy ...This paper describes an approach for Grid service component mining in object-oriented legacy systems, applying software clustering, architecture recovery, program slicing and wrapping techniques to decompose a legacy system, analyse the concerned components and integrate them into a Grid environment. The resulting components with core legacy code function in a Grid service framework.展开更多
Reflective real-time component model is a special component model, which can identify timing constraint characteristics of component and support dynamic design-time amendment of real-time component according to users...Reflective real-time component model is a special component model, which can identify timing constraint characteristics of component and support dynamic design-time amendment of real-time component according to users＇ requirements. The reflective real-time component runtime environment is a bearing space and reflective infrastructure for this special component model. It consists of three parts and manages the lifecycle and various relevant services of reflective real-time component. In this paper its mechanism and relevant key techniques in design and realization are formally specified with the communicating sequential processing （CSP） and the extended timed communicating sequential processing （TCSP）. Finally a prototype is established. Experimental study shows that this runtime environment can introduce a relevant reflective infrastructure guaranteeing dynamic and real-time features of software component.展开更多
Increased global competition and demand for greater product variety result in the emergence of dynamic supply chain,which need to be co-operated without sacrificing their flexibility.Traditional application systems su...Increased global competition and demand for greater product variety result in the emergence of dynamic supply chain,which need to be co-operated without sacrificing their flexibility.Traditional application systems such as ERP,lack the autonomy and flexibility required by dynamic network.EDI is costly and EDI interfaces miss the decision values and logistic control required for supply chain management.Given the limitations of EDI application and traditional application system,this paper is aimed at explo...展开更多
This paper deals with the goals and visions of a consortium in Japan, named Consortium for Business Object Promotion (CBOP), discussing its background, activities, and basic technical approaches to share and exchangin...This paper deals with the goals and visions of a consortium in Japan, named Consortium for Business Object Promotion (CBOP), discussing its background, activities, and basic technical approaches to share and exchanging various types of Business Objects. Especially, Object Pattern Technologies used in CBOP should be discussed.展开更多
IntelligentPad approach provides a standard for dynamically linkable components. Based on the standard, this paper introduces an approach of developing dynamically linkable components by using object oriented techniques.
In this paper, we propose a software component under Windows that generates pseudo random numbers using RDS （Refined Descriptive Sampling） as required by the simulation. RDS is regarded as the best sampling method a...In this paper, we propose a software component under Windows that generates pseudo random numbers using RDS （Refined Descriptive Sampling） as required by the simulation. RDS is regarded as the best sampling method as shown in the literature. In order to validate the proposed component, its implementation is proposed on approximating integrals. The simulation results from RDS using ＂RDSRnd＂ generator were compared to those obtained using the generator ＂Rnd＂ included in the Pascal programming language under Windows. The best results are given by the proposed software component.展开更多
Software reuse is viewed as a key technology to improve software product quality and productivity. This paper discusses a series of technologies related with software reuse and software component technology: component...Software reuse is viewed as a key technology to improve software product quality and productivity. This paper discusses a series of technologies related with software reuse and software component technology: component model, which describes component’s essential characteristics; component acquisition technology, of which domain engineering is the main approach; component management technology, of which component library is the kernel; application integration and composition technology, of which application engineering is the main approach; software evolution technology, of which software reengineering is the main approach, etc. This paper introduces the software development environment: JadeBird Software Production Line System, which effectively integrates the above-mentioned technologies.展开更多
In the past 40 years, software engineering has emerged as an important sub-field of computer science and has made significant contribution to the software industry. Now it is gradually becoming a new independent disci...In the past 40 years, software engineering has emerged as an important sub-field of computer science and has made significant contribution to the software industry. Now it is gradually becoming a new independent discipline. This paper presents a survey of software engineering development from a research perspective. Firstly, the history of software engineering is reviewed with focus on the driving forces of software technology, the software engineering framework and the milestones of software engineering development. Secondly, after reviewing the past academic efforts, the current research activities are surveyed and new challenges brought by Internet are analyzed. Software engineering researches and activities in China are also reviewed. The work in Peking University is described as a representative.展开更多
As the size and complexity of software systems increase, the design and specification of overall system structure become more significant issues than the choice of algorithms and data structures of computation. An app...As the size and complexity of software systems increase, the design and specification of overall system structure become more significant issues than the choice of algorithms and data structures of computation. An appropriate architecture for a system is a key element of its success. Based on the practice of Jadebird software production line, this paper proposes a software architectural style based on hierarchical message buses, named JB/HMB. In this style, the component model consists of external interfaces, static structure and dynamic behavior, which depicts a component from different aspects. Supported by message buses, components interact with one another by messages, which can be used to describe distributed and concurrent systems well. JB/HMB style supports stepwise decomposition and refinement, and runtime system evolution. Finally, characteristics of JB/HMB style are summarized as a conclusion, and future research directions are specified.展开更多
Reuse is viewed as a realistically effective approach to solving software crisis. For an organization that wants to build a reuse program, technical and non-technical issues must be considered in parallel. In this pap...Reuse is viewed as a realistically effective approach to solving software crisis. For an organization that wants to build a reuse program, technical and non-technical issues must be considered in parallel. In this paper, a model-based approach to building systematic reuse program is presented. Component-based reuse is currently a dominant approach to software reuse. In this approach, building the right reusable component model is the first important step. In order to achieve systematic reuse, a set of component models should be built from different perspectives. Each of these models will give a specific view of the components so as to satisfy different needs of different persons involved in the enterprise reuse program. There already exist some component models for reuse from technical perspectives. But less attention is paid to the reusable components from a non-technical view, especially fromthe view of process and management. In our approach, a reusable component model--FLP modelfor reusable component--is introduced. This model describes components from three dimensions(Form, Level, and Presentation) and views components and their relationships from the perspective of process and management. It determines the sphere of reusable components, the time points of reusing components in the development process, and the needed means to present components in terms of the abstraction level, logic granularity and presentation media. Being the basis on which the management and technical decisions are made, our model will be used as the kernel model to initialize and normalize a systematic enterprise reuse program.展开更多
基金This project was supported by the Defense Pre-Research Project of the ‘Tenth Five-Year-Plan’ of China(41315040106) and the National"863"High Technology Research and Development Programof China (2003AAIZ2210)
文摘A hardware/software co-synthesis method is presented for SoC designs consisting of both hardware IP cores and software components on a graph-theoretic formulation. Given a SoC integrated with a set of functions and a set of performance factors, a core for each function is selected from a set of alternative IP cores and software components, and optimal partitions is found in a way to evenly balance the performance factors and to ultimately reduce the overall cost, size, power consumption and runtime of the core-based SoC. The algorithm formulates IP cores and components into the corresponding mathematical models, presents a graph-theoretic model for finding the optimal partitions of SoC design and transforms SoC hardware/software co-synthesis problem into finding optimal paths in a weighted, directed graph. Overcoming the three main deficiencies of the traditional methods, this method can work automatically, evaluate more performance factors at the same time and meet the particularity of SoC designs. At last, the approach is illustrated that is practical and effective through partitioning a practical system.
基金Supported by Scientific Research Funds from Huazhong University of Science and Technology
文摘The key ingredient for promoting software reuse in a repository base integrated development environment, is to provide support for the software developer who wants to search the repository to locate and retrieve suitable software components for reuse. This paper presents that reusable software components form a base to provide a flexible representation of component adaptability to any repository with a specific classification. As an alternative, it proposes to automatically identify and convert the component source code with all its information into a standard form, so that components can be transferred from one type of library to another.
文摘This paper focuses on Distributed Object Oriented Software Engineering over Internet, which is a way to build software culture. We believe that our work will contribute to better understanding of how to meet the needs of the big potential software market and to promote the software industry in developing country. The United States and Western Europe have well established software industry and related civilization. Software science, technology, and engineering are needed in China; however, maybe what is needed, first of all, is software civilization, including software ideas, customs, skills, arts, etc. We will draw a framework for the software culture as following: Software is the most important commodity in this age; Brilliance of hardware component era has become past fact; A software component era is ahead; Traditional linear process model is obsolete; Modern software engineering has a new face, object evolution model; Distributed object oriented software engineering over Internet is an approach to software component era; and Complete software civilization will be formed all over the world in next century.
文摘This paper describes an approach for Grid service component mining in object-oriented legacy systems, applying software clustering, architecture recovery, program slicing and wrapping techniques to decompose a legacy system, analyse the concerned components and integrate them into a Grid environment. The resulting components with core legacy code function in a Grid service framework.
基金the National Defence Foundation of China(Grant No.10104010201)
文摘Reflective real-time component model is a special component model, which can identify timing constraint characteristics of component and support dynamic design-time amendment of real-time component according to users＇ requirements. The reflective real-time component runtime environment is a bearing space and reflective infrastructure for this special component model. It consists of three parts and manages the lifecycle and various relevant services of reflective real-time component. In this paper its mechanism and relevant key techniques in design and realization are formally specified with the communicating sequential processing （CSP） and the extended timed communicating sequential processing （TCSP）. Finally a prototype is established. Experimental study shows that this runtime environment can introduce a relevant reflective infrastructure guaranteeing dynamic and real-time features of software component.
文摘Increased global competition and demand for greater product variety result in the emergence of dynamic supply chain,which need to be co-operated without sacrificing their flexibility.Traditional application systems such as ERP,lack the autonomy and flexibility required by dynamic network.EDI is costly and EDI interfaces miss the decision values and logistic control required for supply chain management.Given the limitations of EDI application and traditional application system,this paper is aimed at explo...
文摘This paper deals with the goals and visions of a consortium in Japan, named Consortium for Business Object Promotion (CBOP), discussing its background, activities, and basic technical approaches to share and exchanging various types of Business Objects. Especially, Object Pattern Technologies used in CBOP should be discussed.
文摘IntelligentPad approach provides a standard for dynamically linkable components. Based on the standard, this paper introduces an approach of developing dynamically linkable components by using object oriented techniques.
文摘In this paper, we propose a software component under Windows that generates pseudo random numbers using RDS （Refined Descriptive Sampling） as required by the simulation. RDS is regarded as the best sampling method as shown in the literature. In order to validate the proposed component, its implementation is proposed on approximating integrals. The simulation results from RDS using ＂RDSRnd＂ generator were compared to those obtained using the generator ＂Rnd＂ included in the Pascal programming language under Windows. The best results are given by the proposed software component.
基金This research is supported by the Key Project of State Ninth "Five-Year Plan" the 863 High-Tech Program of CHina and the National Natural Science Foundatino of China.
文摘Software reuse is viewed as a key technology to improve software product quality and productivity. This paper discusses a series of technologies related with software reuse and software component technology: component model, which describes component’s essential characteristics; component acquisition technology, of which domain engineering is the main approach; component management technology, of which component library is the kernel; application integration and composition technology, of which application engineering is the main approach; software evolution technology, of which software reengineering is the main approach, etc. This paper introduces the software development environment: JadeBird Software Production Line System, which effectively integrates the above-mentioned technologies.
基金This work was supported by several government-funded projects, including the National Key Projects in the State 6th to 10th Five-Year Plan, the National High Technology Development 863 Program of China, the National Grand Fundamental Research 973 Program of China, and the National Natural Science Foundation of China, etc. Acknowledgements The authors would like to thank our research group for their inspiration and support in the past two decades. Due to the space limit and the language, so many papers and reports, especially in Chinese, referred by this paper are omitted here. We would like to thank the authors of these materials.
文摘In the past 40 years, software engineering has emerged as an important sub-field of computer science and has made significant contribution to the software industry. Now it is gradually becoming a new independent discipline. This paper presents a survey of software engineering development from a research perspective. Firstly, the history of software engineering is reviewed with focus on the driving forces of software technology, the software engineering framework and the milestones of software engineering development. Secondly, after reviewing the past academic efforts, the current research activities are surveyed and new challenges brought by Internet are analyzed. Software engineering researches and activities in China are also reviewed. The work in Peking University is described as a representative.
基金This work was supported by the Key Project of National 9th Five-Year Plan of China (Grant No. 98-780-01).
文摘As the size and complexity of software systems increase, the design and specification of overall system structure become more significant issues than the choice of algorithms and data structures of computation. An appropriate architecture for a system is a key element of its success. Based on the practice of Jadebird software production line, this paper proposes a software architectural style based on hierarchical message buses, named JB/HMB. In this style, the component model consists of external interfaces, static structure and dynamic behavior, which depicts a component from different aspects. Supported by message buses, components interact with one another by messages, which can be used to describe distributed and concurrent systems well. JB/HMB style supports stepwise decomposition and refinement, and runtime system evolution. Finally, characteristics of JB/HMB style are summarized as a conclusion, and future research directions are specified.
基金This work was supported by State 9th Five-Year Plan, State 863 High-Tech Program, and the National Natural Science Foundation of China.
文摘Reuse is viewed as a realistically effective approach to solving software crisis. For an organization that wants to build a reuse program, technical and non-technical issues must be considered in parallel. In this paper, a model-based approach to building systematic reuse program is presented. Component-based reuse is currently a dominant approach to software reuse. In this approach, building the right reusable component model is the first important step. In order to achieve systematic reuse, a set of component models should be built from different perspectives. Each of these models will give a specific view of the components so as to satisfy different needs of different persons involved in the enterprise reuse program. There already exist some component models for reuse from technical perspectives. But less attention is paid to the reusable components from a non-technical view, especially fromthe view of process and management. In our approach, a reusable component model--FLP modelfor reusable component--is introduced. This model describes components from three dimensions(Form, Level, and Presentation) and views components and their relationships from the perspective of process and management. It determines the sphere of reusable components, the time points of reusing components in the development process, and the needed means to present components in terms of the abstraction level, logic granularity and presentation media. Being the basis on which the management and technical decisions are made, our model will be used as the kernel model to initialize and normalize a systematic enterprise reuse program.
