摘要:

Software development paradigms currently used within industry are based on established models of the software life-cycle. As technology has evolved and become more accessible, more flexible approaches to the development of software systems have been advocated. Several new models have evolved over recent years based on more powerful software engineering tools and more sophisticated development methodologies. A more responsive approach to the development of software systems should allow the integration of alternative development models to be achieved without requiring changes in the development management structure. The paper introduces meta-models that allow more flexible management of software systems development. A management technique (generalised activity networks) is also introduced that assists in achieving this aim.

DOI:10.1049/sej.1995.0011

出版商:IEE    

年代:1995

数据来源: IET

摘要:

In the paper, we explore the behaviour of neural network software quality models. We select a multiple regression quality model from the principal components of software complexity metrics collected from a large commercial software system. We train two neural networks; one with the complete set of principal components and one with the set of components selected by multiple regression model selection. Comparisons of the three models, for two quality measures gathered from five related software systems, lead to a better understanding of neural network software quality models, and the relationship between software complexity metrics and software quality metrics.

DOI:10.1049/sej.1995.0012

出版商:IEE    

年代:1995

数据来源: IET

摘要:

Techniques for specification and verification of computer network protocols have progressed significantly in the past decade. The progress is largely due to the development of the state transition approach to formal specification and to the greater automation of the verification process. Some ISO state event protocols have been specified and verified using the state transition technique. However, this approach has not been used for a non-state event-driven type of protocol. The ISO JTM protocol contains procedures specifying where work is to be done in open systems; hence it is a procedural-oriented type of protocol. The paper presents a case study using a state transition technique, numerical Petri nets and an automated tool, PROTEAN, to specify and verify a procedural protocol, JTM.

DOI:10.1049/sej.1995.0013

出版商:IEE    

年代:1995

数据来源: IET

摘要:

Although design notations are increasingly being given a formal semantics, often the notations are only informally related to their semantic models. This may be because graphical design notations cannot directly be given an abstract syntax using the well studied string grammars. The paper proposes the use of node-labelled controlled graph grammars to define the abstract syntax of graphical design notations. To illustrate this approach a simple twelve rule grammar is given for a subset of the MASCOT design notation.

DOI:10.1049/sej.1995.0014

出版商:IEE    

年代:1995

数据来源: IET