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Proceedings. 15th International Workshop on Database and Expert Systems Applications, 2004.

30 Aug.-3 Sept. 2004

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Displaying Results 1 - 25 of 181
  • An object-oriented approach to GI Web service composition

    Publication Year: 2004, Page(s):835 - 839
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (322 KB) | HTML iconHTML

    We describe a novel approach to the incremental, semiautomated method for composition of Web services in a geographical domain. First, we present the incremental component concept as a component that comprises both atomic and composite services under the same conceptual entity. Based on this concept, we describe an incremental methodology for composition by means of incremental component reuse. In... View full abstract»

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  • Web-based collaboration: a key tool for the management of corporate information

    Publication Year: 2004, Page(s):276 - 280
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (335 KB) | HTML iconHTML

    In recent years many organisations have had to cope with fewer available management and technical staff. Gan [1999] identified a 25% fall in UK University applications for Built Environment Courses between 1994 and 1997. Construction projects have increasingly applied leading Information Technologies for design, planning, document control and process management which helps offset these issues. The... View full abstract»

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  • Real-time terrain rendering using lodstrips multiresolution model

    Publication Year: 2004, Page(s):819 - 823
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3493 KB) | HTML iconHTML

    Some multiresolution models offer variable resolution capabilities. This property allows us to display areas with different levels of detail on the same mesh. In this paper we present a continuous multiresolution model that allows variable resolution and its application to the realtime rendering of digital terrains. An important characteristic of the model is the use of triangle strips both in the... View full abstract»

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  • Scaki -the scaffolding Wiki

    Publication Year: 2004, Page(s):271 - 275
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (279 KB) | HTML iconHTML

    Support for documenting and managing work processes is valuable for any distributed software development team. Existing tools for process documentation and enactment are complex and expensive. Scaffolding is a simple approach to describe practices. WikiWikiWeb is a simple and inexpensive collaborative publication tool. This paper proposes extensions to exploit the. simplicity of WikiWikiWeb to cre... View full abstract»

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  • Self-adaptive and self-optimising resource monitoring for dynamic grid environments

    Publication Year: 2004, Page(s):689 - 693
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (892 KB) | HTML iconHTML

    As the number of resources on the grid tends to be very dynamic and potentially large, it becomes increasingly important to discover and monitor them efficiently. This paper concentrates on the scalability, reliability and performance of grid discover and monitoring services, using autonomous concepts. Application scenarios are developed where the notification rate of data is dynamically modified,... View full abstract»

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  • Learn as you solve - inventory models Web solver

    Publication Year: 2004, Page(s):426 - 429
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB) | HTML iconHTML

    This work presents a Web-based tool for solving inventory model problems based on stationary demand. The idea behind the tool is to develop a set of dynamic tools that can be easily accessed and utilized by users, both novices and experts, in dealing with inventory model problems. Regardless of the user type, the tool can guide the user into achieving the required results while building results on... View full abstract»

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  • Proposal of tradition handicraft searching method using DCML

    Publication Year: 2004, Page(s):348 - 352
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB) | HTML iconHTML

    In recent years, various types of Web contents which consist of audio, video, graphics and text data are provided on WWW using high-speed networks. Since the volume of those data enormously increase, it is quite difficult to search and retrieve the desired data among them. More efficient and effective search and retrieval method are required to recover from this problem. In particular, the traditi... View full abstract»

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  • A multiresolution approach for Internet GIS applications

    Publication Year: 2004, Page(s):809 - 813
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (691 KB) | HTML iconHTML

    The rise of the Internet has created an infrastructure ideally suited to the widespread distribution and dissemination of geographical information. As Internet GIS applications are being demanded by users, it is necessary to investigate new strategies for data compression, multiresolution, interfaces and so on. This paper describes an approach for multiresolution, which aims to reduce delays cause... View full abstract»

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  • Implantation guide for collaborative Web-based systems (IGCWS)

    Publication Year: 2004, Page(s):259 - 263
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB) | HTML iconHTML

    Nowadays the traditional idea about information systems has changed due to the fact that communication technologies are better. An information system is not a simple program which resolves a particular problem. Now it is a coordination, cooperation and/or communication oriented application. Applications which are sometimes used by a high number of space and time distributed users. The newest appli... View full abstract»

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  • Toward self-stabilizing operating systems

    Publication Year: 2004, Page(s):684 - 688
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (255 KB) | HTML iconHTML

    This work presents several approaches for designing self-stabilizing operating systems. The first approach is based on periodical automatic reinstalling of the operating system and restart. The second, reinstalls the executable portion of the operating system and uses predicates on the operating system state (content of variables) to ensure that the operating system does not diverge from its speci... View full abstract»

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  • Expanding trust beyond reputation in peer-to-peer systems

    Publication Year: 2004, Page(s):966 - 970
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (273 KB) | HTML iconHTML

    The issue of trust in peer-to-peer (P2P) needs to be addressed, especially if it is to evolve into a general information exchange system beyond file sharing. Mechanisms must be included, either directly into the peer-to-peer protocols, or as a separate protocol that is used with the peer-to-peer protocol. We propose a universal trust set based on Bayesian network that is user extensible, and a pro... View full abstract»

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  • XML document summarization: using XQuery for synopsis creation

    Publication Year: 2004, Page(s):928 - 932
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (315 KB) | HTML iconHTML

    This work presents a methodology to support approximate queries over massive and heterogeneous XML data sets, based on concise data statistics such as histograms or other statistical techniques. The basic idea for approximate answers is to store precomputed summaries of the XML data, also called synopses, and to query them instead of the original database, thus saving time and computational costs.... View full abstract»

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  • Psychological models in autonomic computing systems

    Publication Year: 2004, Page(s):747 - 751
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (246 KB) | HTML iconHTML

    This paper considers three psychological theories of motivation with respect to their potential contributions to autonomic systems design. Motivational theories are explored here since they seek to explain the mechanisms by which behaviours in living organisms are initiated. These motivational drives offer an analogy with the management of autonomic functions by modelling the criteria under which ... View full abstract»

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  • Knowledge and uncertainty

    Publication Year: 2004, Page(s):476 - 480
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (635 KB) | HTML iconHTML

    One of the concerns of knowledge management (KM) should be the management of uncertainty in the KM process and in the data with which this process operates. We examine the various types of uncertainty that can arise. These are grouped into types that relate to data quality and to the KM process. Some areas in need of further study are indicated. View full abstract»

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  • Personalised e-learning opportunities - call for a pedagogical domain knowledge model

    Publication Year: 2004, Page(s):410 - 414
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (281 KB) | HTML iconHTML

    A considerable amount of e-learning content is being delivered via virtual or managed learning environments. These platforms keep track of learners' activities including content viewed, time spent and quiz results. This monitoring trawl provides appropriate data to enable personalised e-learning experiences through the application of existing data mining and knowledge discovery techniques. The rea... View full abstract»

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  • A data mining approach to PubMed query refinement

    Publication Year: 2004, Page(s):401 - 405
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB) | HTML iconHTML

    Finding disease relationships requires laborious examination of hundreds of possible candidate heterogeneous factors. Much of the related information is currently contained in biological and medical journals, making biomedical text mining a central bioinformatic problem. More than 14 million abstracts of such papers are contained in the Medline collection and are available online. In this paper we... View full abstract»

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  • Distributed multimedia objects in peer-to-peer networks

    Publication Year: 2004, Page(s):337 - 341
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (286 KB) | HTML iconHTML

    Multimedia objects are distributed and replicated in peer-to-peer (P2P) networks since the objects are cached, downloaded, and personalized in local peer computers. Thus, various types of replicas of objects are distributed in various types and large number of peer computers. An application has to find target peer computers, which support objects with enough quality of service (QoS) required. We d... View full abstract»

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  • Integrating GML resources and other Web resources

    Publication Year: 2004, Page(s):872 - 877
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (298 KB) | HTML iconHTML

    In tackling the semantic Web, a rich domain that requires special attention is the Semantic Geospatial Web. We make a contribution to the Semantic Geospatial Web by defining an approach based on an ontology for integrating nonspatial resources such as html, pdf, pictures (gif, jpg), etc., with GML documents. It is based on a catalog, which stores descriptions about both nonspatial resources and GM... View full abstract»

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  • Semantic interoperability of field-based thematic geographic information

    Publication Year: 2004, Page(s):792 - 796
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB) | HTML iconHTML

    A model for semantic interoperability among a repository of geographic datasets from different providers is proposed in this article. Specifically, this approach focuses on qualified field-based geographic information. Our solution is based on an ontology describing geographic themes. We present a method to build up this ontology from the data schemas of each dataset in the repository. We have dev... View full abstract»

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  • Spatio-temporal data warehouse design for human activity pattern analysis

    Publication Year: 2004, Page(s):814 - 818
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB) | HTML iconHTML

    Many applications refer to moving objects or phenomena and require spatio-temporal modelling and specific analysis. Unlike conventional data where attributes are simple values (numerical or textual), object motion defines a continue variation in space and time. This makes it difficult to handle such datasets, for instance, answering the query "how many objects cross a given area during a given tim... View full abstract»

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  • Enactment of inter-organizational workflows using aspect-element-oriented Web services

    Publication Year: 2004, Page(s):254 - 258
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (247 KB) | HTML iconHTML

    To support collaboration over the Web, workflows have to be enacted not only within an organization, but also between organizations. These inter-organizational workflows create new requirements to enactment architectures, as a dynamic set of workflow participants has to be supported. Therefore, a new enactment architecture based on Web services is developed. It uses a homogeneous and dynamic compo... View full abstract»

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  • Algebraic optimization of data delivery patterns in mobile sensor networks

    Publication Year: 2004, Page(s):668 - 672
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (282 KB) | HTML iconHTML

    Database-like query processing over a network of sensors has become an attractive paradigm for building sensor applications. A sensor query is characterized by data streams among participating sensor nodes with possible in-node data filtering or aggregation, and can be described as a tree-like data delivery pattern. The data delivery pattern can also be considered as a query execution plan, or que... View full abstract»

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  • A conceptual model based distance learning system for computer literacy

    Publication Year: 2004, Page(s):358 - 362
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (291 KB) | HTML iconHTML

    In distance learning for computer literacy, a student's skill is dependent on personal experience. In such cases, it is important to determine the student's understanding. In order to determine the level of understanding, it is necessary to clarify the hidden relationships among the concepts involved in a problem. We think it is possible to determine the understanding correctly by subdividing conc... View full abstract»

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  • A metadata application profile for collection-level description of digital folklore resources

    Publication Year: 2004, Page(s):90 - 94
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (261 KB) | HTML iconHTML

    The preservation and representation of folklore collections is a basic priority for every country because they are valuable for studying the customs and the tradition of specific groups of people and places. However, for the heterogeneity and diversity of folklore resources (text, images, photographs, 3D objects, sound recordings, maps or even digital material), it is difficult to create a unified... View full abstract»

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  • Opportunistic dissemination of spatio-temporal resource information in mobile peer to peer networks

    Publication Year: 2004, Page(s):954 - 958
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (265 KB) | HTML iconHTML

    We examine the dissemination of availability reports about resources in mobile peer-to-peer networks, where vehicles, pedestrian or sensors communicate with each other via short-range wireless transmission. Each disseminated report represents information about a spatial-temporal event, such as the availability of a parking slot at a particular time or the detection of an injured in an earthquake d... View full abstract»

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