Nortel is a global leader in the delivery of advanced telecommunications systems and products, Bell-Northern Research (BNR) is the research and development arm of Nortel. This paper will describe a product development process that integrates information development with product design and test. The roles of key participants in the process will be described. It also presents the team membership and the process used tore-engineer the existing product development process.

article Free Access Share on A functional paradigm for software development Author: R. MacLean Imperial Software Technology, London UK Imperial Software Technology, London UKView Profile Authors Info & Claims ACM SIGSOFT Software Engineering NotesVolume 14Issue 4June 1989 pp 113–115https://doi.org/10.1145/75111.75129Online:01 April 1988Publication History 2citation227DownloadsMetricsTotal Citations2Total Downloads227Last 12 Months7Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

It is difficult to visualize the behaviour of an embedded system in its operational environment from a specification of the system alone. However, it is unacceptable to wait for system completion before validating its behaviour. Discrete event simulation is an effective technique for making quantitative predictions about system behaviour, provided that the model is derived carefully from the system specification. We summarize the steps involved in deriving an Ada** simulation program from a JSD function step specification, using a lift system as an illustration. Having used this technique, we conclude that while it is time-consuming and not amenable to automation in the near future, it is cost-effective because it helps to elucidate counter-intuitive interactions between system functions and environmental parameters.