The specification languages SDL and MSC are used for the development of soft real-time systems. We report on the development of two corresponding validation approaches: validation of designs by simulation and validati...
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The specification languages SDL and MSC are used for the development of soft real-time systems. We report on the development of two corresponding validation approaches: validation of designs by simulation and validation of implementations by conformance testing. The specification languages as well as these validation approaches are now being extended to apply to hard real-time systems. An account of results achieved and the direction of future work is given.< >
This paper is a report of the activities, discussions, and decisions of the process and Information Model Working Group of ECBS. The committee met periodically during the Stockholm meeting and included all present at ...
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This paper is a report of the activities, discussions, and decisions of the process and Information Model Working Group of ECBS. The committee met periodically during the Stockholm meeting and included all present at the meeting who wished to participate. The deliberations focused on study, discussion, and modification of a set of information models presented at the conference. A goal of the committee is to establish an internationally acceptable process meta-model and a related information model for computer based systems engineering work. The two major sources of models have been the studies by the Complement team.< >
Within BT the fundamental need for cohesion and consistency has been recognised and development programmes for both public and private networks, despite being driven with different short-term objectives, are evolving ...
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Within BT the fundamental need for cohesion and consistency has been recognised and development programmes for both public and private networks, despite being driven with different short-term objectives, are evolving within a common technical framework, the Co-operative Networking Architecture-Management (CNA-M). Network and service management is moving from an era of specialised solutions to one of integrated, highly automated solutions building on 'open' interfaces, modular design and reusable software components above an increasingly capable basic infrastructure of computing and network platforms. This framework will continue to be enhanced as the market demands, services, networks, organisations and technology all change. This article considers some of the drivers and changes, assesses their implications for managing advanced services, and describes some of the ways in which technology can be harnessed to meet the challenge. Communications management is taken to cover all activities associated with maintaining telecommunications networks and services at some operational optimum, throughout their whole life cycle, whilst minimising the resources required.< >
Although intelligent networks as such appear superficially to raise no new regulatory issues, a number of questions warranting attention are distinguishable. These include interconnection of differentiated networks, i...
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Although intelligent networks as such appear superficially to raise no new regulatory issues, a number of questions warranting attention are distinguishable. These include interconnection of differentiated networks, interface standardisation, number portability, and integration of aspects of fixed and mobile networks.< >
The promotion of ECBS (engineering of computer-based systems) requires that well-prepared material exists that can be used to address relevant target groups. The Working Group on Training and Education in the IEEE Tas...
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The promotion of ECBS (engineering of computer-based systems) requires that well-prepared material exists that can be used to address relevant target groups. The Working Group on Training and Education in the IEEE Task Force on ECBS is preparing such material for promotion and training in ECBS in industry. First results are reported.< >
Modern computer-based systems (CBS) are complex multi-systems connected by complex computer-based communications. Each of the systems is in many cases, also a multicomputer system. The systems in a multisystem can be ...
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Modern computer-based systems (CBS) are complex multi-systems connected by complex computer-based communications. Each of the systems is in many cases, also a multicomputer system. The systems in a multisystem can be either geographically distributed or locally connected. Typical examples of CBS are; telephone and communications systems, management information systems (MIS), process control and manufacturing automation systems, space systems, transport systems (car, train, and traffic control), medical instruments, automation systems, and commercial electronics. The paper describes the need for the establishment of new engineering discipline the Engineering of Computer Based Systems (ECBS), the scope of CBS and their context, the context of their engineering, standardization issues of CBS representations, engineering of CBS and its relation to software engineering, and required education and training.< >
Several members of the IEEE Computer Society Task Force on Engineering of Computer Based Systems (ECBS) worked together to identify the state of practice in ECBS. Findings were documented in a paper titled "Syste...
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Several members of the IEEE Computer Society Task Force on Engineering of Computer Based Systems (ECBS) worked together to identify the state of practice in ECBS. Findings were documented in a paper titled "Systems Engineering of Computer-Based Systems," published in IEEE Computer, Nov., p.54-65 (1993). Problems identified by the group that were not covered in that paper are discussed here.< >
Primarily stimulated through our work within the German Computer Societies Task Force on the Engineering of Computer-Based Systems (ECBS), we investigated the relationships between recent engineering process standardi...
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Primarily stimulated through our work within the German Computer Societies Task Force on the Engineering of Computer-Based Systems (ECBS), we investigated the relationships between recent engineering process standardization efforts and current ECBS research. We showed that these have to be linked together more closely to achieve real progress in defining a sound basis for operating and managing the ECBS process. This paper is concerned with these relationships. It defines both the technical contents of process standards and how ECBS work can contribute to evaluation, evolution, and operationalization of process standards.< >
Presents experiences from modelling real-time applications in the declarative functional language H, developed hand-in-hand with a novel parallel graph reduction architecture called rp8601, both designed with the requ...
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Presents experiences from modelling real-time applications in the declarative functional language H, developed hand-in-hand with a novel parallel graph reduction architecture called rp8601, both designed with the requirements of real-time embedded systems in mind. In rp8601, the analogue and digital interactions with the environment have been designed into the chips and into the language, and so have mechanisms to handle time constraints. Traditionally, declarative programming means that the programmer need not be aware of the processor operations. Instead, he can focus on the abstract relations between the input and output streams. The specific real-time requirements have normally not been taken into account in the declarative view. Our conclusion is that declarative functional programming is a viable technique for the development of complex software for embedded real-time systems. However, considerable efforts have to be spent on educating and training the application programmers in the new programming paradigm.< >
Proposes a method that allows specifications to be described by as wide a range of people as possible. For that purpose, it is necessary to have support systems that enable the easy input of requirements and that prov...
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Proposes a method that allows specifications to be described by as wide a range of people as possible. For that purpose, it is necessary to have support systems that enable the easy input of requirements and that provide complete specification generation mechanisms from the input requirements. In most cases, specialists describe specifications by applying common knowledge that is independent of individual requirements to satisfy the given requirements. This common knowledge is stored beforehand as a domain model. It is then used to automatically generate the application knowledge capable of satisfying the input requirements. In our method, designers can input their requirements using partial information since information needed to complete specifications is supplemented. A number of theoretical tests confirm that the method is effective.< >
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