检索结果-内蒙古大学图书馆

Technology of Object-Oriented languages and systems (TOOLS)

作者： Kai Koskimies W. Pree J. Bosch G. Hedin Software Systems Laboratory Tampere University of Technology Tampere Finland Software Engineering Group University of Constance Constance Germany Department of Computer Science University of Karlskrona Ronneby Ronneby Sweden Department of Computer Science Lund University Lund Sweden

Summary form only given, as follows. More and more software developers are recognizing the need for solutions that make it possible to share code between different applications in the same domain. Reusing code increases not only the productivity of the developers but also the reliability and maintainability of the software products. Many software companies have ended up with a repository of enterprise components modelling the core business of the company, or with a product-line architecture that captures the common aspects of a family of software products. In both cases, object-orientation (OO) offers a technology that enables these solutions. The workshop studies the problems in designing reuse-oriented architectures (ROA) within the OO paradigm and the OO techniques that support this. The design of such systems is much harder than the design of individual applications, because ROAs need to be valid for unforeseen applications. Instead of a closed world of application concepts, the designer must analyze the variable aspects of a domain. The workshop covers a wide range of topics related to the development of ROAs, including: Design methods for OO product-lines/frameworks; Case studies of existing ROAs; Patterns and architectural styles supporting ROAs; Component-based ROAs; Evaluation of ROAs; Tools supporting the creation and reuse of product-line platforms and frameworks; Documentation of product-line platforms and frameworks; Practical experiences with reuse in OO; and Re-engineering legacy systems into ROAs.

关键词： software maintenance computer architecture Application software Object oriented modeling Design methodology Documentation

来源：评论

学校读者我要写书评

暂无评论

A new restructuring algorithm for the classification-tree method

A new restructuring algorithm for the classification-tree me...

引用

IEEE International Workshop on software Technology and engineering Practice (STEP)

作者： T.Y. Chen P.L. Poon T.H. Tse Vocational Training Council Hong Kong China Department of Computer Science and Software Engineering University of Melbourne Parkville Australia Department of Accountancy Hong Kong Polytechnic University Hong Kong China Department of Computer Science and Software Engineering University of Melbourne Australia Department of Computer Science and Information Systems University of Hong Kong Hong Kong China

The classification-tree method developed by Grochtmann and Grimm facilitates the identification of test cases from functional specifications via the construction of classification trees. Their method has been enhanced by Chen and Poon through the classification-tree construction and restructuring methodologies. We find, however that the restructuring algorithm by Chen and Poon is applicable only to certain types of classification trees. We introduce a new tree-restructuring algorithm to supplement their work.

关键词： Classification algorithms Classification tree analysis software testing Councils computer science software engineering Vocational training Information systems System testing Read only memory

来源：评论

学校读者我要写书评

暂无评论

Lyapunov stability theory for linear repetitive processes - The 1D equation approach

Lyapunov stability theory for linear repetitive processes - ...

引用

1999 European Control Conference, ECC 1999

作者： Rogers, E. Gramacki, J. Gramacki, A. Galkowski, K. Owens, D.H. Department of Electronics and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom Department of Robotics and Software Engineering Technical University of Zielona Gora ul. Podgorna 50 Zielona Gora65-246 Poland Department of Automatic Control and Systems Engineering University of Sheffield Mappin Street SheffieldS1 3JD United Kingdom

ISBN: (纸本)9783952417355

This paper reports further development of the so-called ID Lyapunov equation based approach to the stability analysis of differential linear repetitive processes. In particular, it is shown that this approach leads to stability tests which can be implemented by computations with matrices which have constant entries, and that if the example under consideration is stable then physically meaningful information concerning one key aspect of 'transient' performance is available for no extra cost. The computational efficiency of these new stability tests against alternatives is also discussed and some areas for short to medium term further research briefly noted. © 1999 EUCA.

关键词： Linear systems

来源：评论

学校读者我要写书评

暂无评论

A cognitive model for context dependent fuzzy knowledge

A cognitive model for context dependent fuzzy knowledge

引用

Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： K.M. Eksioglu G. Lachiver Systems Software Unit Institut de recherche d''Hydro-Québec Varennes QUE Canada Electrical & Computer Engineering Department Sherbrooke University Sherbrooke QUE Canada

Context dependency is an important problem of knowledge. Fuzzy information also suffers from this dependency when any fuzzy concept, once described, is isolated from its context. The paper describes a cognitive model in which fuzzy knowledge is processed with respect to its surrounding context. The model is derived from some psycho-cognitive approaches: the integrity of knowledge and its context as well as the episodic character of contextual effects on knowledge. The model consists of some functional modules performing related cognitive tasks. Fuzzy knowledge is kept within a layered long-term memory. Layers form an episodic base for contextual knowledge: each layer represents a different context and keeps related fuzzy knowledge. A context selector module evaluates existence of context information in order to choose appropriate context layers. An aggregation module which is an optimization module evaluates implicit contexts. The model is supported by a car brake example, which shows its simplicity and adaptability, and thus the power of this cognitive model. The model is useful especially for mobile fuzzy system applications where knowledge on environment conditions are constantly changing and adaptation of the fuzzy system's descriptive aspects are necessary.

关键词： Context modeling Fuzzy logic Power system modeling System software Psychology Fuzzy systems Upper bound Temperature Knowledge representation Information processing

来源：评论

学校读者我要写书评

暂无评论

Simultaneous Optimization of Structural and Control systems (Consideration of Location of Sensors and Actuators)

Simultaneous Optimization of Structural and Control Systems ...

引用

The First China-Japan-Korea Joint Symposium on Optimization of Structural and Mechanical systems

作者： Yukio Tada Isao Nishino Department of Computer and Systems Engineering Faculty of Engineering Kobe University Rokkodai Nada Kobe 657-8501 Japan 1st Software Div. NEC Communication Systems Kansai Ltd 1-4-24 Siromi Chuou Osaka 540-8511 Japan

This paper considers an optimization problem of a 3-dimensional truss whose vibration is controlled in the case of sensor/actuator collocation. The design variables are cross sectional areas of truss members and locations of the collocated sensors/actuators. The problem has three objectives, the structural weight, the function that represents the influence of the initial state of the system and the number of sensors/actuators. By minimizing the second objective, we can suppress the vibration to some degree. Moreover, in this paper, we consider the uncertainty of the initial state of the system which is dependent on the initial loading conditions. We treat these three objectives by the weighing method for multiobjective problem. The optimization is carried out by the use of Genetic Algorithm. It is shown through numerical simulation that the improvement of the vibration suppression is accomplished by the small control input for the structure designed by the present formulation.

关键词： Optimum Structural Design, Control Design, Genetic Algoritlim, H∞ Control, FEM

来源：评论

学校读者我要写书评

暂无评论

Dynamic process initial conditions in repetitive processes. Controllability and stability analysis

Dynamic process initial conditions in repetitive processes. ...

引用

Information, Decision and Control (IDC)

作者： K. Galkowski E. Rogers A. Gramacki J. Gramacki D.H. Owens Institute of Robotics and Software Engineering Technical University of Zielona Góra Zielona Gora Poland Department of Electronics and Computer Science Image Speech and Intelligent Systems Research Group University of Southampton Southampton UK Institute of Computer Engineering and Electronics Technical University of Zielona Góra Zielona Gora Poland School of Engineering Centre for Systems and Control Engineering University of Exeter Exeter UK

Repetitive, or multipass, processes are a class of 2D systems of both practical and algorithmic/theoretical interest whose dynamics cannot be analysed or controlled using standard (1D) systems theory. Recently it has been shown that the modelling of the boundary conditions, also known as the process initial conditions, is a crucial feature in the analysis and control of these processes. This paper presents some further results on the effects of so-called 'dynamic' process initial conditions on the controllability and stability properties of discrete linear repetitive processes. Previous work has shown that these dynamic process initial conditions alone can destroy the stability properties of these processes. Hence their effects must be 'adequately' accounted for the process modelling stage in order to ensure that subsequent analysis does not lead to incorrect results/conclusions. The main results developed in this paper can be summarised as follows. (i) Computationally efficient stability tests which can, in effect, be applied using standard, or 1D, linear systems tests. (ii) Characterisation of so-called pass controllability in the form of matrix rank based conditions. (iii) Conditions under which the dynamic process initial conditions can be selected to ensure stability and pass controllability.

关键词： Stability Controllability System testing Control system analysis Algorithm design and analysis Control systems Boundary conditions Process control Standards development Linear systems

来源：评论

学校读者我要写书评

暂无评论

Automatic adjustment system for the optical head of a magnetooptical disk drive

引用

systems and computers in Japan 1999年第10期30卷 1-12页

作者： Matsueda, Jun Oosawa, Fujio Sutou, Kazumi Kikuchi, Takahiro Tamano, Michio Koezuka, Tetsuo Furukawa, Yasuo Corp. Mfg. Engineering Systems Group Fujitsu Ltd. Kawasaki 211-8588 Japan Fujitsu Automation Ltd. Oyama 323-0042 Japan Fujitsu Laboratories Ltd. Atsugi 243-0197 Japan Department of Computer Science University of Electro-Communications Fujitsu 1st Commun. Software Co. Fujitsu Ltd. Corp. Mfg. Engineering Systems Group Department of Mathematics Nihon University Fujitsu 1st Commun. Software Ltd. Fujitsu Automation Ltd. 2nd Business Center

A fully automatic adjustment system for mass production of the optical head for magnetooptical disk drives is described. The optical head is composed of millimeter scale optical components, such as laser diode, the collimator lens, the object lens, various prisms and various detectors. A series of algorithms composed of measurement, recognition, calculation of manipulation, execution of manipulation, verification and fixation ensures proper adjustment of the head. The key is to process the measured value, recognize the shape of the beam and the waveform, and determine the manipulation. With this system, the adjustment process is reduced to 6 minutes, as compared to 9 hours it takes an experience worker.

关键词： Optical disk storage

来源：评论

学校读者我要写书评

暂无评论

A note on object-oriented software architecting 3rd

引用

3rd Workshop on Object-Oriented Technology, ECOOP 1998

作者： Galal, Galal Hassan Software Systems Engineering Group Department of Computer Science University College London Gower Street LondonWC1E 6BT United Kingdom

ISBN: (纸本)3540654607

There is currently an enormous interest in the concept of software architecture, largely induced by the concept of architectural patterns first introduced by the architect Christopher Alexander (Alexander, 1979;Alexander et. al, 1977). We feel that some of the earlier work on software and system architectures has not benefited sufficiently from a deeper understanding of the complexity of the act of architecting in its home discipline: the built environment. This has lead to a confusion between fine-grain constructional mechanisms and techniques, and the overall, coarse-grain, software architectures that should in some way reflect original problem domains. © Springer-Verlag Berlin Heidelberg 1998.

关键词： software architecture

来源：评论

学校读者我要写书评

暂无评论

The second international graphics recognition contest — Raster to vector conversion: A report 2nd

引用

2nd International Workshop on Graphics Recognition, GREC 1997

作者： Chhabra, Atul K. Phillips, Ihsin T. Bell Atlantic Network Systems Advanced Technology 500 Westchester Avenue White PlainsNY10604 United States Department of Computer Science Software Engineering Seattle University SeattleWA98122 United States

A contest on raster to vector conversion was organized at the GREC’97 workshop in Nancy, France. This report describes the methodology used in the contest and presents the results. Various ways of analyzing the perfo... 详细信息

ISBN: (纸本)3540643818

关键词： Rasterization

来源：评论

学校读者我要写书评

暂无评论

A benchmark for raster to vector conversion systems 7th

引用

7th Joint IAPR International Workshop on Structural and Syntactic Pattern Recognition, SSPR 1998 and 2nd International Workshop on Statistical Techniques in Pattern Recognition, SPR 1998

作者： Phillips, Ihsin T. Chhabra, Atul K. Department of Computer Science/Software Engineering Seattle University SeattleWA98122 United States Bell Atlantic Network Systems Advanced Technologies 500 Westchester Avenue White PlainsNY10604 United States

ISBN: (纸本)3540648585

This paper presents a benchmark for evaluating the Raster to vector conversion systems. The benchmark is designed for evaluating the performance of graphics recognition systems on images that contain straight lines (solid or dashed), circles (solid or dashed), partial arcs of circles (solid or dashed), as well as, bounding boxes of text blocks within the images. This benchmark gives a scientific comparison of vectorization software and uses practical performance evaluation methods that can be applied to complete vectorization systems. Three systems were evaluated under this benchmark and their performance results are presented in this paper. We hope that this benchmark will help assess the state of the art in graphics recognition and highlight the strengths and weaknesses of current vectorization technology and evaluation methods. © Springer-Verlag Berlin Heidelberg 1998.

关键词： Benchmarking

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：