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A development and runtime platform for teleconferencing applications

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 1997年第3期15卷 576-588页

作者： Blum, C Dubois, P Molva, R Schaller, O Laboratory of Chromatography DEPg.Fac.Quimica Universidad Nacional Autonoma de Mexico Circuito interior Cd Universitaria/CP 04510 Mexico D.F.Mexico

A communication platform is described that supports the fast implementation of networked multimedia applications with conference character and collaboration features, The platform exhibits the notion of a site as one of its main abstractions, A site is a collection of workstations, media input, and output devices that are, in terms of control, tightly coupled, Connection and application control is centralized within one site, but distributed among different sites, The platform exports a programming interface with high-level abstractions for session and connection control, allowing application developers to concentrate on scenario and user interface design, The platform was implemented in the course of the European Beteus (Broadband Exchange for Trans-European Usage) project. A tele-meeting application and a tele-teaching application were developed on top of it, Platform components and applications were tested on the European asynchronous transfer mode (ATM) pilot network over a period of nine months, The paper first describes platform architecture and programming interface, then talks about the implementation of platform and applications and their deployment in the harsh environment of a trans-national broadband pilot network.

关键词： asynchronous transfer mode collaborative work multicast channels software design/development teleconferencing

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An algorithm to construct the discrete cohomology basis functions required for magnetic scalar potential formulations without cuts

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IEEE TRANSACTIONS ON MAGNETICS 2003年第3期39卷 1167-1170页

作者： Henrotte, F Hameyer, K Katholieke Univ Leuven ESAT ELECTA B-3001 Louvain Belgium

Magnetic scalar potential formulations without cuts require the definition of a set of basis functions for the cohomology structure of the magnetic field function space. This paper presents an algorithm to construct'such a basis in the general case thanks to a properly chosen spanning tree. The algorithm is based on the topological properties of the discrete Whitney complex. It applies to static and dynamic problems.

关键词： algorithms circuits differential geometry duality electromagnetic coupling software design/development spanning tree topology

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A parametric finite element environment tuned for numerical optimization

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IEEE TRANSACTIONS ON MAGNETICS 1998年第5期34卷 2936-2939页

作者： Pahner, U Mertens, R De Gersem, H Belmans, R Hameyer, K Katholieke Univ Leuven Dept EE ESAT Div ELEN B-3001 Louvain Belgium

Nowadays, numerical optimization in combination with finite element (FE) analysis plays an important role in the design of electromagnetic devices. To apply any kind of optimization algorithm, a parametric description of the FE problem is required and the optimization task must be formulated. Most optimization tasks described in the literature, feature either special developed algorithms for a specific optimization task, or extensions to standard finite element packages. Here, a 2D parametric FE environment is presented, which is designed to be best suited for numerical optimization while maintaining its general applicability. Particular attention is paid to the symbolic description of the model, minimized computation time and the user friendly definition of the optimization task.

关键词： optimization methods finite element methods software design/development

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A general environment for the treatment of discrete problems and its application to the finite element method

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IEEE TRANSACTIONS ON MAGNETICS 1998年第5期34卷 3395-3398页

作者： Dular, P Geuzaine, C Henrotte, F Legros, N Univ Liege Dept Elect Engn Inst Montefiore B-4000 Liege Belgium

A general computer aided description environment for the treatment of discrete problems, based on a concise structure for both development and application levels, is described and applied to the finite element method. Its characteristics reveal its great ability to welcome in an evolutive way a wide range of physical models and numerical methods, with any coupling of them. It is therefore adapted to various activities, such as research, collaboration, education, training and industrial studies.

关键词： computer aided software engineering software design/development structured programming software tools finite element method modeling electromagnetic fields

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END-USER PROGRAMMING

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COMPUTER 1995年第9期28卷 68-70页

作者： JONES, C Software Productivity Research Inc. Burlington MA USA

End-user software development is a growing avocation in every industry andevery country. By the middle of the next century, computer literacy and programming skills will bealmost as common as reading and writing skills. Almost every knowledge worker in the world will beable to program if he or she sets out to do so. The implications of widespread end-user software areonly just beginning to be considered. There are many exciting possibilities and some potentialhazards. The time is now at hand to consider business topics such as ownership of end-userapplications and liability in cases of significant errors.

关键词： Personnel Product liability software design/development software development management

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Evolving software processes by tailoring the behavior of software objects

Evolving software processes by tailoring the behavior of sof...

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International Conference on software Maintenance (ICSM)

作者： Belkhatir Melo LGI Grenoble France UMIACS University of Maryland College Park MD USA

software process evolution corresponds to the act of improving the existing prescriptive software process models in a controlled and supported way. As software processes change constantly, it is therefore necessary to support one or more methods for assisting environment administrators in improving models. Changes are made in order to adapt software process models to new requirements, correct inconsistencies encountered in the course of execution, and modify, add or remove certain constraints. This article shows how software process evolution as supported in Tempo, a process-oriented software engineering environment where software processes are formally described in an object-oriented process schema. In Tempo, a process schema is comprised of descriptions of software agents, software products and software processes. A new approach is presented which supports the dynamic evolution of software process descriptions. In this approach, software process change is the result of tailoring the behavior of software objects manipulated during software process enaction.< >

关键词： Object-oriented programming software development environments software design/development

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Knowledge-based user interface migration

Knowledge-based user interface migration

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International Conference on software Maintenance (ICSM)

作者： Moore Rugaber Seaver College of Computing Georgia Institute of Technology Atlanta GA USA

A significant problem in reengineering large systems is adapting the user interface to a new environment. Often, drastic changes in the user interface are inevitable, as in migrating a text-based system to a workstation with graphical user interface capabilities. This experience report chronicles a study of user interface migration issues, examining and evaluating current tools and techniques. It also describes a case study under taken to explore the use of knowledge engineering to aid in migrating interfaces across platforms.< >

关键词： Intelligent systems software design/development software maintenance Computer-aided software engineering User interfaces

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Re-engineering legacy systems to meet quality requirements: an experience report

Re-engineering legacy systems to meet quality requirements: ...

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International Conference on software Maintenance (ICSM)

作者： Antonini Canfora Cimitile Department of Software Engineering DATITALIA Processing SpA DIIIE-Department of Ingegnena dell'Informazione ed Ingegneria Elettrica Faculty of Engineering at Benevento University of Salerno Italy DIS-Department of |Infonnatica e Sistemistica University of Naples Federico II Italy

The paper is a summary of a third party re-engineering project aiming to adjust a legacy system to the new quality standard established by the customer. The quality standard is defined in the form of a set of metrics each associated with a range of acceptable values. A set of 100 programs has been restructured and modularised to meet the quality requirements. When possible, automated tools have been used in order to reduce the costs, standardise the results, and ease the transfer of techniques and methodologies to the customer. The re-engineered programs have replaced the original versions in the customer production environment. Their quality, and in particular their understandability and maintainability, is considerably increased as confirmed by the customer's technical personnel. The work described is a preliminary step towards the definition of a larger re-engineering project to bring the customer's software portfolio into line with the new quality standard.< >

关键词： software maintenance software quality software metrics software design/development software management

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Change impact identification in object oriented software maintenance

Change impact identification in object oriented software mai...

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International Conference on software Maintenance (ICSM)

作者： Kung Gao Hsia Wen Toyoshima Chen University of Texas Arlington Arlington TX USA Fujitsu Network Transmission Systems Inc. San Jose CA USA

In the object-oriented (OO) paradigm, new features (such as encapsulation, aggregation, inheritance, polymorphism and dynamic binding) introduce new problems in software testing and maintenance. One of them is the difficulty of identifying the affected components (such as classes) when changes are made in object-oriented class libraries or programs. This paper discusses the types of code changes in an object-oriented class library, and provides an automated solution to identify different kinds of code changes and their impact. In addition, an OO software maintenance environment that implements the research result is described. Our experience with the environment prototype shows promising results.< >

关键词： Object-oriented programming software maintenance software development environments software testing software design/development

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Individual and group spreadsheet design: patterns of errors

Individual and group spreadsheet design: patterns of errors

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Panko Halverson University of Hawai USA

Working alone or in groups of two (dyads) or four (tetrads), undergraduate business students developed a spreadsheet model. This paper discusses the errors that the students made and presents a typology of spreadsheet... 详细信息

关键词： software design/development Error analysis Statistics Computer performance

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