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检索条件"任意字段=3rd IEEE Symposium on Application-Specific Systems and Software Engineering Technology, ASSET 2000"

共 49 条记录，以下是31-40 订阅

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software product line reuse in practice

Software product line reuse in practice

引用

ieee Workshop on application-specific software engineering Technolog (asset)

作者： C.W. Krueger BigLever Software Inc. Austin TX USA

The study of software product line addresses the issues of engineering software systems families, or collections of similar software systems. The objective of a software product line is to reduce the overall engineering effort required to produce a collection of similar systems by capitalizing on the commonality among the systems and by formally managing the variation among the systems. This is a classic software reuse problem (C. Krueger, 1992). The primary focus of software product line research has been on domain analysis and modeling, architecture modeling, software reuse repositories, generators, and process definition. In contrast, for engineering single systems, these technologies and techniques provide significant value, while for engineering software product lines the conventional wisdom suggests they are essential. We hypothesize, however, that domain analysis, architecture modeling, software reuse repositories, generators, and process definition are simply compensating for a void in the existing software engineering technology space and that this void can be filled by a more simple, powerful, and concise technology for engineering software product lines. This new technology then redefines the status of domain analysis and the other existing technologies so that they have the same status in software product line development that they do in single system development: valuable engineering technologies but not necessarily requisite.

关键词： software systems Space technology Maintenance engineering Computer architecture software engineering systems engineering and theory Power engineering and energy Buildings software maintenance engineering management

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Design reuse and scale: keys to practical code generation and large scale software maintenance

Design reuse and scale: keys to practical code generation an...

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： I.D. Baxter Semantic Designs Inc.

We advocate the reuse of design knowledge rather than code as the most effective means for obtaining productivity and quality improvements in software engineering activities. This knowledge comes in several forms; domain analysis, generative knowledge, and knowledge of the structure of a particular system in terms of the domain and how domain concepts are implemented. We are building and using a practical large-scale software (re)engineering tool, the Design Maintenance System (DMS) that implements these ideas. Reusing design knowledge, DMS is able to automate many interesting engineering activities: analysis, reverse engineering, forward synthesis, and eventually software maintenance via design maintenance. Code reuse methods are incapable of providing strong support for these activities. However, many issues involved in DMS construction are driven by the scale of the problem; number of languages, sheer code volume, amount of knowledge involved, and computational energy required.

关键词： software maintenance Productivity software engineering Buildings Large-scale systems software tools Design engineering Knowledge engineering Reverse engineering software design

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How to obtain accurate estimates in a real-time environment using full function points

How to obtain accurate estimates in a real-time environment ...

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： F. Bootsma Nortel Networks Limited USA

An extension to the current IFPUG function point counting practices method is presented. This extension, called Full Function Points, has enabled Nortel Networks project teams to more completely scope the functional size of real time software projects and to produce early, accurate development estimates more consistently. Although the function point metric is widely used in many software organizations throughout the world to produce accurate design estimates early, the real time software industry acknowledges that the application of the IFPUG functional scoping method has not been sufficient to drive consistently accurate estimates for real time software projects. The paper illustrates how a Nortel Networks pilot has supplemented the IFPUG method using a Full Function Point approach, an approach that has pioneered the first successful application of Full Function Points to enable the generation of consistently accurate effort estimates in a real time environment.

关键词： Electrical capacitance tomography Programming Information technology Companies Job shop scheduling Intelligent networks Ear application specific integrated circuits Character recognition Business

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Fingerprint registration using genetic algorithms

Fingerprint registration using genetic algorithms

引用

ieee Workshop on application-specific software engineering Technolog (asset)

作者： H.H. Ammar Y. Tao Department of Computer Sciences and Electrical Engineering West Virginia University Morgantown WV USA

In automated fingerprint identification systems, an efficient and accurate alignment algorithm in the preprocessing stage plays a crucial role in the performance of the whole system. We explore the use of genetic algorithms for optimizing the alignment of a pair of fingerprint images. To test its performance, we compare the implemented genetic algorithm with two other algorithms, namely, 2D and 3D algorithms. Based upon our experiment on 250 pairs of fingerprint images, we find that: genetic algorithms run ten times faster than a 3D algorithm with similar alignment accuracy; and genetic algorithms are 13% more accurate than a 2D algorithm, with the same running time. The conclusion drawn from this study is that a genetic algorithm approach is an efficient and effective approach for fingerprint image registration.

关键词： Fingerprint recognition Genetic algorithms Image matching Testing Tellurium Decision making Neural networks Graphics

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An application of fuzzy clustering to software quality prediction

An application of fuzzy clustering to software quality predi...

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： X. Yuan T.M. Khoshgoftaar E.B. Allen K. Ganesan Florida Atlantic University Boca Raton FL USA Empirical Software Engineering Laboratory Department of Computer Science and Engineering Florida Atlantic University Boca Raton FL USA Microsoft Corporation Redmond WA USA

The ever increasing demand for high software reliability requires more robust modeling techniques for software quality prediction. The paper presents a modeling technique that integrates fuzzy subtractive clustering with module-order modeling for software quality prediction. First fuzzy subtractive clustering is used to predict the number of faults, then module-order modeling is used to predict whether modules are fault-prone or not. Note that multiple linear regression is a special case of fuzzy subtractive clustering. We conducted a case study of a large legacy telecommunication system to predict whether each module will be considered fault-prone. The case study found that using fuzzy subtractive clustering and module-order modeling, one can classify modules which will likely have faults discovered by customers with useful accuracy prior to release.

关键词： application software software quality Predictive models Fuzzy logic Fuzzy sets Linear regression software metrics Fuzzy systems software reliability Computer industry

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Designing user interface for Web interactive systems

Designing user interface for Web interactive systems

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： A.M. da Silva Filho R.S.M. de Barros H.K.E. Liesenberg Department of Informatics Federal University of Pernambuco (UFPE) Brazil Institute of Computing State University of Campinas Brazil

The user interface design aims at enabling work and other activities to be performed more effectively, efficiently and with more enjoyment and satisfaction. The user interface of multiuser Web applications is a medium where all objects being shared on it can be viewed independently from the geographical location and its users can interact with each other in real time. Designing such an interface for users working collaboratively requires dealing with a number of issues. Herein, our concerns lies on the control component of human-computer interaction design and corresponding user interface (UI) software that implements it. Our interactive systems development process based on the MPX Mapping from PAN (Protagonist Action Notation) into Xchart (eXtended Statechart) is used to improve the product quality. Then, we illustrate this methodological approach through a case study of a Web interactive system.

关键词： User interfaces Interactive systems Collaborative work Telecommunication computing Human computer interaction Informatics software libraries Computer interfaces Physics Collaborative software

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Issues in realization of an execution time analyzer for distributed real-time objects

Issues in realization of an execution time analyzer for dist...

引用

ieee Workshop on application-specific software engineering Technolog (asset)

作者： K.H. Kim L. Choi Moon Hae Kim Konkuk University Seoul South Korea University of California Irvine CA USA

An issue that the real-time software research community has long recognized as an important technological challenge but has not shown much progress in meeting the challenge is to guarantee response times of real-time distributed systems. Two basic problems must be addressed to effectively meet this challenge: establishment of the distributed real-time program structure and the system infrastructure structure that enable systematic analysis of the worst-case time behavior of the application systems; and development of tools which perform automated analysis of the worst-case time behavior while leaving only minimal work to the designers. Research on the first problems has produced some useful results in recent years. Time is thus ripe for tackling the second problem on the basis of those recent developments in handling the first problem. This paper describes a desirable systematic timing analysis process which builds upon the recent results in the first problem area. An outline of a desirable analysis tool is also presented.

关键词： Timing Delay Real time systems Operating systems Performance analysis Moon Identity-based encryption Yarn Sockets Protocols

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A dynamic memory measuring tool for C++ programs

A dynamic memory measuring tool for C++ programs

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： Woo Hyong Lee J.M. Chang Y. Hasan Department of Computer Science Illinois Institute of Technology Chicago IL USA

Dynamic memory management has been a high cost component in many software systems. A study has shown that memory intensive C programs can consume up to 30% of the program run time in memory allocation and liberation. Especially, in C++ programs, they tend to have object creation and deletion prolifically. The C++ memory allocation rate can be as much as ten times higher than the comparable applications written in C. Despite the importance of dynamic memory management in C++, there exist few software tools to study dynamic memory in C++. This paper introduces a tracing tool, called mtrace++, to study the dynamic memory allocation behavior in C++ programs. mtrace++ is a source code level instrumented tracing tool which produces records of allocation and deallocation information. mtrace++ identifies the origins of allocated memories and life-spans of objects. With limited overheads, mtrace++ can help programmers to solve dynamic memory problems with affordable cost.

关键词： Memory management Electrical capacitance tomography Programming profession Costs Computer science software systems application software software tools Frequency Knowledge management

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QoS measures and implementations based on various models for real-time communications

QoS measures and implementations based on various models for...

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： J. Ding M. Kirkpatrick E.H.-M. Sha Department. of Computer Science and Engineering University of Notre Dame Notre Dame IN USA

Quality of service (QoS) is a set of service requirements to be met by the network while transporting a data flow in real-time communication systems. Many real-time sources generate traffic with variable rates. We studied a class of soft real-time applications whose bandwidth requirements are random variables. We defined two models for soft real-time communications: the dropping model and the keeping model. We measure the QoS of the whole system, not individual applications. We defined three measures for the system's performance: system feasibility, packet transferability, and weighted packet transferability. Different scheduling algorithms are studied. Some related issues were also studied, such as queue size and gain functions. Finally we implemented a simulator and some typical simulation results and conclusions are presented.

关键词： Quality of service Bandwidth Real time systems Multimedia systems Traffic control Random variables Videoconference Computer science Data engineering Intelligent networks

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Augmenting sequence constraints in Z and its application to testing

Augmenting sequence constraints in Z and its application to ...

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ieee Workshop on application-specific software engineering Technolog (asset)

作者： W.T. Tsai V. Agarwal B. Huang R. Paul Department of Computer Science and Engineering University of Minnesota Minneapolis MN USA OASD Y2K Office Washington D.C. DC USA

The paper introduces sequence constraints into a formal specification language Z. Formal specification languages have been used to specify safety-critical applications, and many static and dynamic aspects of the system can be specified. However, the method calling constraints, a runtime behavior, are often missed. The paper introduces two kinds of sequence constraints: those constraints with respect to a schema and those with respect to multiple schemas. Once sequence constraints are specified, together with parameter specifications already in Z, one can generate test cases including test inputs and their expected outputs using various testing strategies such as partition testing, boundary testing, random testing, stress testing, and negative testing. An application has been specified in Z using sequence constraints, and test cases generated have been used to test the software. The results show that the test cases generated successfully detected all the faults seeded.

关键词： Testing application software Electrical capacitance tomography Formal specifications specification languages Runtime Computer science Stress Mission critical systems Safety

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