Volumes & issues:
Volume 14, Issue 2
April 2003
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- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 2 –3
- DOI: 10.1049/cce:20030209
- Type: Article
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- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 4 –5
- DOI: 10.1049/cce:20030210
- Type: Article
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- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 6 –7
- DOI: 10.1049/cce:20030211
- Type: Article
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- Author(s): S. Martin
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 8 –11
- DOI: 10.1049/cce:20030201
- Type: Article
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Integrating the unified modelling language with the formal specification language Z can produce software specifications that exhibit the strengths of both notations. After gleaning some practical experience of both UML and Z, the author evolved a method combining both notations that utilises the strengths of each to compensate for the weaknesses of the other, and so minimises the need for natural language text in software specifications. This method has been employed for specifying a variety of small extra features added to a large Unix based telecommunications system. - Author(s): R. Vidgen
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 12 –17
- DOI: 10.1049/cce:20030202
- Type: Article
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UML provides a powerful framework and notation for modelling business processes and objects. This article focuses on using UML to understand business requirements - 'what' is required, rather than 'how' it will be achieved. - Author(s): Guihe Qin ; Anlin Ge ; Jiehong Zhao ; Ju-Jang Lee
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 18 –21
- DOI: 10.1049/cce:20030203
- Type: Article
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A cruise control algorithm has been developed for vehicles with automated manual transmission (AMT). The algorithm is based on fuzzy logic and is embedded in the control program of the AMT. - Author(s): I. Alexander
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 22 –26
- DOI: 10.1049/cce:20030204
- Type: Article
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It used to be said that "he who pays the piper calls the tune". In those happy, far-off days, a client contacted an engineering firm, stated their requirements, and paid for the resulting system. or at least that was the theory. but was it ever so simple. Stakeholder analysis is not a science, and does not involve excitingly challenging branches of control theory. Yet the issues that it addresses have to be faced by every project and, on current evidence, it would be a good thing if it were taken far more seriously by many engineering projects. In a nutshell, people matter; and people play many different roles, all crucial to project success. Projects need to know the roles involved, and the viewpoints of the stakeholders playing those roles. - Author(s): P. Warren
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 27 –31
- DOI: 10.1049/cce:20030205
- Type: Article
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The World Wide Web today suffers from a defect that stems from its original design. The Web is based on the use of the Hypertext Markup Language (HTML), which allows a page's author to define broadly how it will look on computers across the globe. HTML works well in providing a common language to achieve that goal. However, it says nothing about what the data is for, i.e. about its semantics. The effectiveness of the World Wide Web is set to be dramatically changed with the introduction of the semantic Web. - Author(s): R. Marin ; J. Armesto ; J. Garrido ; J. Saez ; L. Trillo
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 32 –37
- DOI: 10.1049/cce:20030206
- Type: Article
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Two control schemes for materials handling systems are compared, one a traditional PLC/SCADA system and the other using a PC system in the Windows environment and the real-time operating system RMOS. - Author(s): Q.H. Wu ; D.P. Buse ; P. Sun ; J. Fitch
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 38 –43
- DOI: 10.1049/cce:20030207
- Type: Article
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E-automation can be used to provide a more flexible and integrated structure for control systems than the traditional SCADA methodology. Various aspects of e-automation have been described. There are a number of ways in which industrial automation can benefit from such a system. The introduction of the Ethernet network and Internet protocols makes it possible to view data from outside the plant, and can also make it easier for devices produced by different manufacturers to co-operate. These advantages are also provided by simpler IP-based systems, which use client-server techniques. These often extend existing SCADA products by providing a Web-based interface, allowing information to be viewed using a web browser. However, a multi-agent system also provides a suitable framework for implementing peer-to-peer communications between devices, and provides greater flexibility in terms of configuration than client-server systems. - Author(s): M. Collier
- Source: Computing and Control Engineering, Volume 14, Issue 2, p. 44 –47
- DOI: 10.1049/cce:20030208
- Type: Article
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The controller area network (CAN) is an example of a "one-wire" network that provides an attractive solution to a number of problems found in manufacturing operations in developing countries. It provides facilities for monitoring, control and communications in factories, processing plants and farms. The system can be implemented with low-cost microcontrollers employed at diverse locations to provide a suitable level of automation. The production of controller area networks in economically-challenged countries will be helped if the complexity and price of the hardware at the network nodes can be reduced. - Source: Computing and Control Engineering, Volume 14, Issue 2, p. 48 –49
- DOI: 10.1049/cce:20030212
- Type: Article
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Comment
News
Contracts/Products
The best of both worlds: Integrating UML with Z for software specifications
Requirements analysis and UML: use cases and class diagrams
Cruise control of automated manual transmission vehicles
Stakeholders: who is your system for?
The next steps for the WWW: putting meaning into the Web
Control of automated materials handling systems
An architecture for e-automation
Reducing the hardware costs of CAN control
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