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Australiasian Computing Education Conference

作者： Julia Coleman Prior Department of Software Engineering Faculty of Information Technology University of Technology Sydney Sydney Australia

ISBN: (纸本)0909925984

Being able to formulate useful SQL queries is a fundamental skill required by many software development professionals. Mastering this skill is a difficult process, requiring considerable practice and effort on the part of the student. In addition, assessment of SQL query formulation skills is a process that does not appear to have been thoroughly researched, and numerous problems are inherent to the approaches commonly taken in universities to do this assessment. This paper examines two of these approaches, identifies problems with them, and then proposes another method of assessment. The way that students are assessed in a subject has a significant impact on their learning approach, and it is crucial that assessment tasks are carefully designed and implemented to inculcate a deep learning experience. The online assessment method proposed is described, evaluated, and the challenges and benefits of using it are discussed. This is a work-in-progress and the conclusion states that further validation is needed, and there is opportunity for additional research and development in this particular area of assessment.

关键词： assessment databases SQL learning approaches online assessment SQL query formulation testing SQL SQL query Database Students

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Advanced topics in workflow management: Issues, requirements, and solutions

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Journal of Integrated Design and Process Science 2003年第3期7卷 49-77页

作者： Van der Aalst, Wil M.P. Weske, Mathias Wirtz, Guido Department of Information and Technology Eindhoven University of Technology Eindhoven NL-5600 MB PO Box 513 Netherlands Hasso Plattner Institute for Software Systems Engineering Potsdam D-14482 Prof. Dr.-Helmert-Straße 2-3 Germany Distributed and Mobile Systems Group Faculty of Information Systems and Applied Computer Science Otto-Friedrich-Universität Bamberg Bamberg D-96045 Feldkirchenstraße 21 Germany

This paper surveys and investigates the strengths and weaknesses of a number of recent approaches to advanced workflow modelling. Rather than inventing just another workflow language, we briefly describe recent workflow languages, and we analyse them with respect to their support for advanced workflow topics. Object Coordination Nets, Workflow Graphs, WorkFlow Nets, and an approach based on Workflow Evolution are described as dedicated workflow modelling approaches. In addition, the Unified Modelling Language as the de facto standard in object-oriented modelling is also investigated. These approaches are discussed with respect to coverage of workflow perspectives and support for flexibility and analysis issues in workflow management, which are today seen as two major areas for advanced workflow support. Given the different goals and backgrounds of the approaches mentioned, it is not surprising that each approach has its specific strengths and weaknesses. We clearly identify these strengths and weaknesses, and we conclude with ideas for combining their best features. © 2003, IOS Press. All rights reserved.

关键词： Applied workflow systems Flexible workflow management Workflow analysis

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Case study: reconnaissance techniques to support feature location using RECON2

Case study: reconnaissance techniques to support feature loc...

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Asia-Pacific Conference on software engineering

作者： S. Ibrahim N.B. Idris A. Deraman Centre For Advanced Software Engineering Universiti Teknologi Malaysia Kuala Lumpur Malaysia Faculty of Technology & Information System Universiti Kebangsaan Malaysia Selangor Darul Ehsan Malaysia

Change requests are often formulated into concepts or features that a maintainer can understand. One of the main issues faced by a maintainer is to know and locate "where does this program implement feature X". However, these features are implicitly available in the code and scattered elsewhere that make them undoubtedly difficult to manage. A technique called software reconnaissance was originally inspired by industrial maintainers about the need for better ways of locating software features in large systems. We present the experience in using the software reconnaissance technique and tool called RECON2, developed by the university of West Florida. Our objective is to understand how the technique and tool work and to further suggest some enhancements with respect to software understanding strategies.

关键词： Computer aided software engineering software maintenance Programming profession Reconnaissance software engineering Scattering software tools information systems Computer industry Documentation

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Re-documenting, visualizing and understanding software system using DocLike Viewer

Re-documenting, visualizing and understanding software syste...

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Asia-Pacific Conference on software engineering

作者： S. Sulaiman N.B. Idris S. Sahibuddin Faculty of Computer Science & Information Technology Universiti Teknologi Malaysia Skudai Johor Malaysia Center for Advanced Software Engineering (CASE) Universiti Teknologi Malaysia Kuala Lumpur Malaysia

Visualizing the artifacts of a software system graphically has proven to improve the cognitive strategies and understanding of the subject system by programmers. This is more crucial when they need to maintain a software system with out-dated documentation or without system documentation at all. Many tools have emerged and they predominantly consist of a reverse engineering environment and a viewer to visualize software artifacts such as in the form of graphs. The tools also grant structural redocumentation of existing software system but they do not directly utilize document-like software visualization in their approaches. We propose DocLike modularized graph (DMG) method that represents the software architectures of a reverse engineered subject system graphically in a modularized and standardized document-like manner. To realize this method, we have built a prototype tool called DocLike Viewer that enables a user to redocument, visualize and comprehend a subject system written in C language that is parsed by an existing parser. From the experiment conducted we found that our method managed to statistically improve cognition of a subject system in terms of productivity and quality to solve certain types of maintenance tasks.

关键词： Visualization software systems Documentation Reverse engineering software tools Programming profession software maintenance software architecture software prototyping Prototypes

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AGENT-ORIENTED METASYNTHETIC engineering FOR DECISION MAKING

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International Journal of information technology & Decision Making 2003年第2期2卷 197-215页

作者： L. B. CAO R. W. DAI Department of Software Engineering Faculty of Information Technology University of Technology Sydney PO Box 123 Broadway NSW 2007 Australia Complex Systems and Intelligence Science Lab Institute of Automation Chinese Academy of Sciences P. O. Box 2728 Beijing 100080 China

Decision making plays a more and more important role in present society, especially in dealing with open complex giant systems, such as macroeconomic decision making. A feasible and effective approach for dealing with the increasingly remarkable decision making problems, in particular open complex giant systems, is to construct a Hall for Workshop of Metasynthetic engineering (HWME), which is essentially an open giant intelligent decision support system in itself. On the other hand, the emergent agent technology is proposed and popularized as a new computing paradigm for building complex software systems. In this paper, we first briefly introduce the principle of metasynthetic engineering and the HWME in terms of decision support, and propose the network-based hierarchical model of an HWME. Furthermore, we discusse the design idea of agent-oriented metasynthetic engineering for decision support systems. We discuss the design scheme, the framework and the working mechanism of an HWME based on intelligent agents in Java which took the macroeconomic decision making as an instance. In addition, we further examine the fundamental problem of designing agent-oriented open giant intelligent decision support systems. The suitability and challenges of the present agent-oriented abstractions for open giant intelligent systems are further analyzed. Then, we propose the concept of societal abstraction for agent-oriented open giant intelligent systems, which is based on the following hypothesis: a unified mechanism — societal interactions, organizational schemes and component patterns, and multi-agent society. Our preliminary study reveals that the agent-oriented metasynthetic engineering is valid and powerful for decision making of open complex giant systems.

关键词： Metasynthetic engineering decision making open complex giant system open giant intelligent system human computer cooperation HWME multi-agent technology

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A GUI software development system for digital AV applications

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Systems and Computers in Japan 2003年第7期34卷 99-107页

作者： Haruna, Shuusuke Sanada, Norio Kinoh, Hisayuki Sumiya, Kazutoshi Taki, Kazuo Department of Information Grad. Sch. of Science and Technology Kobe University Kobe 657-8501 Japan Core Software Development Center Matsushita Elec. Indust. Co. Ltd. Kadoma 571-8501 Japan Res. Ctr. for Urban Safety/Security Kobe University Kobe 657-8501 Japan Department of Computer Engineering Faculty of Engineering Kobe University Kobe 657-8501 Japan

The scale of software on digital AV appliances that handle large-volume multichannel digital data has been increased by the GUIs (graphical user interfaces) loaded on them in recent years. In addition, the GUIs of AV appliances use remote controls having cursor keys. Focus management must be performed by these to point to the object of operation, in contrast to the mouse, which is capable of pointing on the entire screen. Since focus management changes with changes in the specifications of GUIs, such as screen layouts and the like, software may not be reusable. In this paper, a development system that attempts to improve the productivity of GUI software requiring focus management is discussed from the points of view of (1) a software design model based on an object-oriented MVC model, (2) an execution model with good efficiency corresponding to the design model, (3) development tools performing synthesis of GUI software and automatic generation of focus management procedures, and (4) applications and evaluations of the system. In an example of the application of the system, software productivity with a GUI specification change was improved by a factor of three. © 2003 Wiley Periodicals, Inc.

关键词： Graphical user interfaces

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The best papers from CCGrid 2001

The best papers from CCGrid 2001

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Symposium on Cluster Computing and the Grid CCGrid2001

作者： Lee, Craig A. Roe, Paul Buyya, Rajkumar Computer Systems Research Department Aerospace Corporation El Segundo CA United States School of Computer Science and Software Engineering Monash University Melbourne Vic. Australia Faculty of Information Technology Queensland University of Technology Brisbane QLD Australia

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A blind SLM receiver for PAR-reduced OFDM

A blind SLM receiver for PAR-reduced OFDM

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IEEE Conference on Vehicular technology (VTC)

作者： A.D.S. Jayalath C. Tellambura Faculty of Information Technology School of Computer Science and Software Engineering Monash University Clayton VIC Australia

Selected mapping (SLM) generates a set of independent signals from an information sequence and transmits the signal with minimum peak-to-average power ratio (PAR). To recover data, the receiver is sent critical side information (SI) about the generation process. In this paper, a novel blind detection algorithm is developed for coded orthogonal frequency division multiplexing (OFDM) and SLM. The blind SLM algorithm performs well in both AWGN and fading channels in the presence of amplifier non-linearities.

关键词： OFDM Peak to average power ratio Fading Convolutional codes Power generation Signal generators Transmitters Additive white noise Gaussian noise Decoding

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Cauchy - Schwarz bound on the generalized Marcum Q-function with applications

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Wireless Communications and Mobile Computing 2001年第2期1卷 243-253页

作者： Annamalai, A. Tellambura, C. The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University 206 North Washington Street Suite 400 Alexandria VA 22314 U.S.A. School of Computer Science and Software Engineering Faculty of Information Technology Monash University Clayton Victoria 3168 Australia

The Cauchy-Schwarz bounding technique is used to derive useful bounds on the generalized Marcum Q-function and its complement. Three new exponential-type bounds on QM (α, β) are derived, and these are found to be tight and useful for a number of applications of interest. One such example is the derivation of an upper bound on the average symbol error rate probability for noncoherent and differentially coherent communication systems over generalized fading channels. It is shown that these exponential-type bounds are considerably tighter than the Chernoff bound (Rappaport SS. IEEE Trans. on information Theory 1971;17: 497-498) counterpart. Numerical results also reveal that the tightness of one of the exponential-type bounds is comparable to the bound obtained in Simon and Alouini (IEEE Trans. on Communications 2000: 359-366), while another is found to be superior than that obtained in Simon and Alouini over a wide range of arguments. Copyright © 2001 John Wiley and Sons, Ltd.

关键词： bounding technique performance analysis fading channels diversity methods generalized Marcum Q‐function

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OPEN: a flexible OO/CBD process for software-intensive systems development, a UML exposition 01

OPEN: a flexible OO/CBD process for software-intensive syste...

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Proceedings of the 23rd International Conference on software engineering

作者： Houman Younessi Brian Henderson-Sellers Rensselaer Initiative in Software Engineering (RISE) Associate Professor of Computer Science Rensselaer Polytechnic Institute Rensselaer at Hartford Centre for Object Technology Applications and Research Professor of Information Systems Faculty of Information Technology University of Technology Sydney

ISBN: (纸本)9780769510507

Object technology is an approach that is increasingly being adopted for the development of quality software and software-intensive systems. Recent experience has demonstrated that it provides a sophisticated environment to support high quality software engineering practice. However, the use of object technology should not be restricted to languages but should encompass analysis, design, V&V and many such aspects belonging to the methodological dimension of the development life-cycle. Furthermore, it should also cover other issues belonging to the technological and contextual aspects.

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