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检索条件"主题词=Computer aided software engineering"

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Use of development methodology and CASE-tools in Norway: results from a survey

Use of development methodology and CASE-tools in Norway: res...

引用

International Workshop on computer-aided software engineering

作者： J. Krogstie Electrical Engineering and Computer Science Norwegian Institute of Technology Trondheim Norway

Results are presented in the areas of the use of development methodology and CASE-tools within software development and maintenance, from a survey investigation performed in Norwegian organizations. The results are based on responses from 52 Norwegian organizations. The investigation indicates a larger proportion of new systems being developed as customized systems in larger organizations. The presence of a comprehensive development methodology and the use of CASE-tools are also more prominent in larger organizations, which also use statistically significant less of their time on functional maintenance. Even so, the impact of CASE-tools on the information systems portfolios of Norwegian organizations is not yet large. A notably different perception of the benefits of CASE-technology was observed between users and non-users of CASE, even if it was not statistically significant.< >

关键词： Information systems Testing computer science Programming software maintenance computer aided software engineering Application software Postal services computer Society Large-scale systems

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Mass collaboration: a case study [customer support system]

Mass collaboration: a case study [customer support system]

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International Symposium on Database engineering and Applications (IDEAS)

作者： R. Ramakrishnan A. Baptist V. Ercegovac M. Hanselman N. Kabra A. Marathe U. Shaft University of Wisconsin Madison USA ADP USA Veritas DGC Inc. AT and T Research USA Oracle Corporation USA

We present an overview of a novel customer support system developed at QUIQ between 1999 and 2003. The application was perhaps the first systematic use of mass collaboration, which builds on the observation that large communities of users can be effectively leveraged to help each other, and to advance the interests of the community as a whole. In recent years, mass collaboration has been proposed for uses such as information integration and even program debugging, and shows much promise. In this paper, we outline the main ideas and technical challenges, and describe the QUIQ architecture. Technically, the main achievements include a novel DB-IR engine; a scalable notification engine for a rich class of user-specified alerts; a powerful access control mechanism with support for roles, dynamic groups, and field-level access control; and techniques for editing navigation hierarchies in dynamic sites.

关键词： computer aided software engineering Engines Access control Routing Shafts Debugging Navigation Online Communities/Technical Collaboration Costs Personnel

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Control of a double inverted pendulum with hydraulic actuation: a case study

Control of a double inverted pendulum with hydraulic actuati...

引用

American Control Conference (ACC)

作者： W.N. White R.C. Fales Mechanical and Nuclear Engineering Department Kansas State University Manhattan KS USA Caterpillar Inc. Peoria IL USA

A hydraulic actuated inverted pendulum with controller is designed, built, and tested. There are several objectives behind the device development. The first objective is to create an apparatus that can be used for class exercises for upper level control courses. Specifically, the device can be used to illustrate the complete control design process from plant modeling and identification to controller selection, design, and implementation, The next objective is to create a test bed for control theory investigations. The last objective is to choose an important means of actuation that does not receive significant coverage in the controls literature. We present details of the pendulum construction, its dynamic model, and controller design. The steps taken to model the plant and actuator together with the identification procedure present a useful example for control students regarding other aspects of control design which are not often covered in control texts.

关键词： computer aided software engineering DC motors Postal services Testing Control design Instruments Equations Open loop systems Geometry Aerodynamics

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Publications management from an ecological perspective: three documentation case studies

Publications management from an ecological perspective: thre...

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International Conference on Professional Communication (IPCC)

作者： T. Means-Zachry Concurrent Technologies Corporation Millville UT USA

The paper uses an information ecology metaphor to examine the performance of publications management tasks. The author applies an ecological perspective, focusing on the humans, tools, values, and objectives involved in publications activities to three case studies. These case studies provide insight into the development, integration, and remediation of information ecologies. The author contends that applying an ecological perspective will help facilitate successful completion of publications tasks and improve the effectiveness of the resulting documentation.

关键词： Documentation computer aided software engineering Environmental factors Technology management Government Environmental management Project management Humans Publishing activities Laboratories

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An approach based on the concept of use case to produce dynamic object-oriented specifications

An approach based on the concept of use case to produce dyna...

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IEEE International Symposium on Requirements engineering

作者： B. Dano H. Briand F. Barbier TELIS IRIN Nantes France IRIN/IRESTE University of Nantes Nantes France

Presents an approach based on the concept of "use case" to support the requirements engineering process. The proposed approach assists the analyst in producing dynamic object-oriented requirements specifications. The approach is "domain expert-oriented" in the sense that the domain expert can actively participate during the requirements acquisition activity by identifying and by describing the use cases. A formal technique using Petri nets is also proposed during the requirements acquisition activity in order to make the domain expert's requirements as complete and as unambiguous as possible. During the requirements conceptualization activity, the explanation of how some parts of dynamic requirements specifications can be produced from the formalized use cases is presented.

关键词： computer aided software engineering Petri nets Terminology Feedback Collaborative work

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Distributed Feedback Optimization for Multi-Robot Target Encirclement and Patrolling

Distributed Feedback Optimization for Multi-Robot Target Enc...

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IEEE International Conference on Automation Science and engineering (CASE)

作者： Lorenzo Pichierri Guido Carnevale Giuseppe Notarstefano Department of Electrical Electronic and Information Engineering University of Bologna Bologna Italy

ISBN: (数字)9798350358513

ISBN: (纸本)9798350358520

In this paper, we address multi-robot target monitoring and patrolling tasks via distributed feedback optimization. In particular, we design a distributed policy to steer a network of peer-to-peer robots toward a configuration minimizing a comprehensive index cost taking into account three different goals. First, the robots aim at disposing in a formation enclosing a given target. Second, each single robot aims at placing itself as close as possible to a specific point of interest. Third, the robots need to avoid dangerous locations modeled according to a suitable potential. To model this overall task, we resort to the formalism of aggregative feedback optimization, a recently emerged framework in which the goal is to minimize the sum of local functions each depending on both local (e.g., the position of a robot) and global variables (e.g., the barycenter of a team of robots) while concurrently taking into account also the robots’ nonlinear dynamics. We test our distributed strategy via realistic Webots simulations of a team of Crazyflie nano-quadrotors in a ROS 2 framework.

关键词： Costs computer aided software engineering Automation Distributed feedback devices Nonlinear dynamical systems Peer-to-peer computing Indexes Robots Optimization Monitoring

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Database analyzer and predictor-an overview

Database analyzer and predictor-an overview

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International Conference on Data engineering

作者： S. Orlando V. Perri S. Scrivano W. Staniszkis CRAl Consorzio per la Ricerca e le Applicazioni di lnformatica Italy

The database analyzer and predictor (DBAP) is a CASE (computer-aided software engineering) tool supporting the design and tuning of IDMS (integrated data-management system) DB/DC applications. It is an interactive system, completely integrated with the IDMS online environment and providing the database designer with a comprehensive set of performance analysis models evaluating principal aspects of the database system performance. Close coupling of the workload analysis models with the computer system model provides a means for predicting the response-time behavior of the modeled database system. The performance-oriented database methodology, supported by a menu-driven user interface, guides the users through the database design, as well as existing database system tuning and capacity-planning projects.< >

关键词： Data analysis Database systems computer aided software engineering Design methodology Performance analysis Predictive models Application software User interfaces Research and development Bridges

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F-16 automatic test system acquisition and sustainment management - a case study in transformation

F-16 automatic test system acquisition and sustainment manag...

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International Automatic Testing Conference, AUTOTESTCON

作者： S.D. Lucchetta D.E. Lanagan ASC/YPLV F-16 Program Office OH F-16 Logistics Operations Division OO-ALCILGF AA UT

The turn of the 21/sup st/ century brought with it demands for transforming the way the Department of Defense does business. Secretary of Defense Donald Rumsfeld challenged the DoD's senior leaders to nurture within the department a culture of creative and intelligent risk taking, where managers think less like bureaucrats and more like venture capitalists. An environment where managers foresee requirements rather than react to requirements; then field solutions quickly using tools such as innovative contracting strategies, system integrators, and industry partnering. The Air Force Chief of Staff has made transformation of the entire acquisition process, to include sustainment, a top priority for the service. He has acknowledged in his report to the 107/sup th/ Congress, 2/sup nd/ Session, that while the Air Force has a strong record of individual successes in acquisition reform, broad-based changes are still needed. He stressed that acquisition transformation is the number one goal of the Air Force's acquisition leadership.

关键词： Automatic testing System testing computer aided software engineering Risk management Military standards Weapons National security Cultural differences Test equipment Environmental management

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Sustainability and end-of-life product management: a case study of electronics collection scenarios

Sustainability and end-of-life product management: a case st...

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IEEE International Symposium on Electronics and the Environment

作者： R.J. Caudill D.A. Dickinson Multi-lifecycle Engineering Research Center New Jersey Institute of Technology Newark NJ USA

The national electronics product stewardship initiative (NEPSI) was established by the US EPA to examine issues associated with electronics recycling, engage in discussions to build consensus among all stakeholder groups, and recommend a strategy for developing a national electronics recycling program. One of the outcomes of this effort was a set of guidelines describing a base level of service for collection and recycling which would apply across the country. Fundamental to the concept of base level of service is sustainability - the need to balance societal concerns for end-of-life product management with system cost effectiveness and environmentally-sound operational strategies. the sustainability target method (STM), developed in close collaboration between Lucent Bell Labs and the Multi-lifecycle engineering Research Center at NJIT, is used to evaluate various alternative collection scenarios. The key and unique feature of the STM is that it links the economic value of a system with its environmental impact by defining the relative indicator resource productivity (RP) for impact and the absolute indicator eco-efficiency (EE) for sustainability, thereby providing practical sustainability criteria for evaluation.

关键词： computer aided software engineering Recycling Costs Economic indicators Environmental economics Collaboration Productivity Geographic Information Systems Delay estimation Vehicles

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Training of line echo canceller with PRBS signals

Training of line echo canceller with PRBS signals

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IEEE International Networking and Communications Conference, INCC

作者： A.I. Bhatti S.I. Shah Center for Advanced Studies in Engineering Islamabad Pakistan

The paper addresses the problem of convergence time reduction for the line echo cancellation problem in the context of VoIP applications. Training signals can be used for this purpose. Intuitively speaking, any decorrelated signal, such as white noise, can be used as a training signal. C. Antweiler and H.-G. Symanzik (see Proc. ICASSP-1995, p.3031-4, 1995) have shown that a certain signal, called perfect sequence, can be such a training signal. The method for generating such signals is not easy to use, neither can it be extended to arbitrary lengths. The authors propose another candidate signal, called maximum length pseudo random binary sequence (mlPRBS), to be a perfect sequence. The conditions on such a signal are further analyzed and highlighted. It is shown that the proposed training signal fulfils such requirements. The claims are backed by simulation results. The simulation elements used are available in the public domain.

关键词： Echo cancellers Finite impulse response filter Adaptive filters Convergence Signal generators Delay Internet telephony computer aided software engineering Decorrelation White noise

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