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IEEE International Conference on e-Technology, e-Commerce and e-Service

作者： A.B. Waluyo R. Hsieh D. Taniar W. Rahayu Bala Srinivasan School of Computer Science and Software Engineering Monash University Australia Department of Computer Science and Computer Engineering La Trobe University Australia School of Business Systems Monash University Australia

The emerging of wireless computing motivates radical changes of how information is derived. Our paper concerns with developing push and pull based application in wireless environment. We use a simplified e-health (hospital) context to demonstrate some effective uses of pull-based and push-based mechanisms. The pull mechanism involves information retrieval from a database, and update information in the database. The push mechanism is classified into three scenarios, (i) aperiodic push, (ii) periodic push - global recipients and (iii) periodic push - selective recipients.

关键词： Hospitals Databases Network servers Context computer science Information retrieval Unicast Broadcasting Communication system control software engineering

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Trust management in collaborative agent-based systems

Trust management in collaborative agent-based systems

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Proceedings of the Biannual World Automation Congress

作者： Zhen Shi H. Ghenniwa Weiming Shen Cooperative Distributed Systems Engineering Group Department of Electrical & Computer Engineering University of Western Ontario Canada Integrated Manufacturing Technologies Institute National Research Council Canada Canada

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A replicated experiment of usage-based and checklist-based reading

A replicated experiment of usage-based and checklist-based r...

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International Symposium on software Metrics

作者： T. Thelin C. Andersson P. Runeson N. Dzamashvili-Fogelstrom Department of Communication Systems Lund University Lund Sweden Department of Software Engineering and Computer Science Blekinge Institute of Technology Ronneby Sweden

software inspection is an effective method to detect faults in software artefacts. Several empirical studies have been performed on reading techniques, which are used in the individual preparation phase of software inspections. Besides new experiments, replications are needed to increase the body of knowledge in software inspections. We present a replication of an experiment, which compares usage-based and checklist-based reading. The results of the original experiment show that reviewers applying usage-based reading are more efficient and effective in detecting the most critical faults from a user's point of view than reviewers using checklist-based reading. We present the data of the replication together with the original experiment and compares the experiments. The main result of the replication is that it confirms the result of the original experiment. This replication strengthens the evidence that usage-based reading is an efficient reading technique.

关键词： Inspection Fault detection Testing Communication system software computer science software metrics Bioreactors Springs software engineering

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An authorization model for multimedia digital libraries

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International Journal on Digital Libraries 2004年第3期4卷 139-155页

作者： Kodali, Naren Farkas, Csilla Wijesekera, Duminda Department of Information and Software Engineering George Mason University Fairfax VA 22030-4444 United States Center for Secure Information Systems George Mason University Fairfax VA 22030-4444 United States Information Security Laboratory University of South Carolina Columbia SC 29208 United States Department of Computer Science and Engineering University of South Carolina Columbia SC 29208 United States

In this paper we present a generalized authorization model for multimedia digital libraries. Our aim is to support the enforcement of access control requirements of the original data sources without the need to create a new, unified model for the digital library. We integrate the three most widely used access control models (i.e., mandatory, discretionary, and role-based) within a single framework, allowing seamless accesses to data protected by these security models. In particular, we address the access control needs of continuous media data while supporting quality of service (QoS) requirements and preserving operational semantics. The technical core of the paper focuses on the development of metadata and the corresponding metastructure to represent authorization policies and QoS requirements and shows their applicabilty to continuous media. We define our security objects based on the Synchronized Multimedia Integration Language (SMIL), which controls multimedia presentations. Following the synchronization constructs 〈par〉 and 〈seq〉 of SMIL, we define a normal form for multimedia streams, called SMIL normal form. SMIL normal form provides a syntax-independent representation of semantically equivalent multimedia data. SMIL normal form compositions are extended (decorated) with RDF statements, representing security and QoS metadata. Interpretation of these statements and, therefore, the authorization and QoS requirements of the decorated multimedia object are defined by the metastructure, represented as a DAML+OIL ontology. We propose the concept of generalized subject that encompasses all access permissions of a given user regardless of the multiple permissions in different access control models. Finally, we develop methods to generate secure views for each generalized subject and retrieve them using a secure multimedia server. © Springer-Verlag 2004.

关键词： Access control Continuous media Digital library Metadata Semantics

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Planar orthogonal drawing of complete binary trees inside rectilinear polygons

Planar orthogonal drawing of complete binary trees inside re...

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IEEE International Conference on Multi Topic

作者： A. Bagheri M. Razzazi Software Systems Research & Development Lab Department of Computer Engineering & IT Amirkabir University of Technology슠 Tehran Iran Software Systems Research & Development Lab Department of Computer Engineering & IT Institute for Studies in Theoretical Physics and Mathematics (I.P.M) Amirkabir University of Technology슠 Tehran Iran

In this paper we introduce a new algorithm for planar orthogonal drawing of complete binary trees on the surface of a given simple rectilinear polygon. Our algorithm aims to uniformly distribute the vertices of the given tree on the given surface and to reduce the total number of edge bends as much as possible. We also introduce a new linear time algorithm for bisecting simple (rectilinear) polygons, assuming the straight skeletons of the polygons are given. To our knowledge, this paper and the previous works of the authors are the first attempts for developing algorithms that draw trees on 2D surfaces which are bounded by simple (rectilinear) polygons.

关键词： Binary trees Tree graphs Skeleton engineering drawings Application software Very large scale integration Graphical user interfaces Research and development Optical computing Physics computing

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Utility-function based resource allocation for adaptable applications in dynamic, distributed real-time systems

Utility-function based resource allocation for adaptable app...

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International Symposium on Parallel and distributed Processing (IPDPS)

作者： F. Drews L. Welch D. Juedes D. Fleeman A. Bruening K. Ecker M. Hoefer Center for Intelligent Distributed and Dependable Systems School of Electrical Engineering and Computer Science Ohio University Athens OH USA Department of Computer Science Technical University of Clausthal-Zellerfeld Clausthal-Zellerfeld Germany

Summary form only given. We propose architecture and a general optimization framework for dynamic, distributed real-time systems. Interesting features of this model include the consideration of adaptive applications and utility functions. We extend by formalizing the corresponding multicriterial optimization problem. As the most difficult part of this problem, we identified the evaluation and comparison of the quality of single allocations and sets of allocations, respectively. To this end, we propose and examine metrics for measuring the goodness of solutions within our general resource management framework. These metrics lay the basis for further work on developing both online and offline algorithms to tackle the general optimization problem and provide an efficient adaptive resource manager for dynamic, distributed real-time systems.

关键词： Resource management Real time systems Application software computer science Space technology Geoscience Satellites Sensor arrays Middleware Degradation

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Web-based platform for multimedia programming

Web-based platform for multimedia programming

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IEEE International Conference on Multimedia and Expo (ICME)

作者： A.P. Vazhenin Ying-Hong Wang D.A. Vazhenin Department of Computer Software University of Aizu Fukushima Japan Department of Computer Science and Information Engineering Tamkang University Tamsui Taiwan Graduate School Department of Information Systems University of Aizu Fukushima Japan

This paper describes basic elements of the Web-based platform for multimedia programming which is designed in the framework of the WWW-oriented workplace of applied programmer (W4AP). The proposed platform hides the insignificant features of software and hardware from the applied programmers and provides a unified style for different programming development tools; a comfortable environment combining visual and multimedia programming technologies. The architecture of the W4AP server is shown supporting a programming process and manipulations with multimedia data. Examples are demonstrated of the practical use of the proposed platform as well as user interface features

关键词： Programming profession Electronic mail computer architecture Application software computer interfaces Resource management Large-scale systems Web and internet services Information systems systems engineering and theory

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Approximate caches for packet classification

Approximate caches for packet classification

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： F. Chang Wu-chang Feng Kang Li Systems Software Laboratory OGI School of Science and Engineering at OHSU Beaverton OR USA Department of Computer Science University of Georgia Athens GA USA

Many network devices such as routers and firewalls employ caches to take advantage of temporal locality of packet headers in order to speed up packet processing decisions. Traditionally, cache designs trade off time and space with the goal of balancing the overall cost and performance of the device. We examine another axis of the design space that has not been previously considered: accuracy. In particular, we quantify the benefits of relaxing the accuracy of the cache on the cost and performance of packet classification caches. Our cache design is based on the popular Bloom filter data structure. This paper provides a model for optimizing Bloom filters for this purpose, as well as extensions to the data structure to support graceful aging, bounded misclassification rates, and multiple binary predicates. Given this, we show that such caches can provide nearly an order of magnitude cost savings at the expense of misclassifying one billionth of packets for IPv6-based caches.

关键词： Filters Costs Aging Data structures Cache storage System software Laboratories Modems Protocols Classification algorithms

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Artificial neural network-based face recognition

Artificial neural network-based face recognition

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International Symposium on Communications Control and Signal Processing (ISCCSP)

作者： A. Reda B. Aoued Evolutionary Engineering and Distributed Information Systems Laboratory EEDIS Computer Science Department University of Sidi-Bel Abbes Algeria Digital Signal processing laboratory Electronic Department University of Sidi-Bel Abbes Algeria

This document demonstrates how a face recognition system can be designed with artificial neural network. Note that the training process did not consist of a single call to a training function. Instead, the network was trained several times on various input ideal and noisy images, the images that contents faces. In this case training a network on different sets of noisy images forced the network to learn how to deal with noise, a common problem in the real world.

关键词： Artificial neural networks Face recognition Neural networks Neurons Face detection Image databases Laboratories Humans Design engineering distributed information systems

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Automated data mapping specification via schema heuristics and user interaction 04

Automated data mapping specification via schema heuristics a...

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IEEE International Conference on Automated software engineering (ASE)

作者： S. Bossung H. Stoeckle J. Grundy R. Amor J. Hosking Software Systems Group Technical University Hamburg-Harburg Hamburg Germany Department of Computer Science University of Auckland Auckland New Zealand Department of Electrical and Computer Engineering University of Auckland Auckland New Zealand

ISBN: (纸本)9780769521312

Data transformation problems are very common and are challenging to implement for large and complex datasets. We describe a new approach for specifying data mapping transformations between XML schemas using a combination of automated schema analysis agents and selective user interaction. A graphical tool visualizes parts of the two schemas to be mapped and a variety of agents analyze all or parts of the schema, voting on the likelihood of matching subsets. The user can confirm or reject suggestions, or even allow schema matches to be automatically determined, incrementally building up to a fully-mapped schema. An implementation of the mapping specification can then be generated.

关键词： XML Voting Java computer science Data engineering Buildings Programming software tools Data visualization Prototypes

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