84 research outputs found
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An Ontology-based Approach to Web Site Design and Development
Building a data-intensive web site is a complex task. Ad-hoc rapid prototyping approaches easily lead to unsatisfactory results, e. g. poor maintainability and extensibility. The situation becomes even more difficult when customization issues arise and web sites need to present customized views to individual users. To address this problem, a number of model-based approaches have been proposed, which attempt to simplify the design and development of data-intensive web sites. However these approaches suffer a number of limitations, such as relatively little support for the composition of sophisticated user interfaces and the specification of presentation styles and little support for customization design.
In this work we propose and implement an ontology-based approach, OntoWeaver, which provides comprehensive support for the design and development of data-intensive web sites. In particular, OntoWeaver provides a set of ontologies to represent all aspects of data-intensive web sites in a declarative and re-usable format. The declarative nature of the specification of web sites opens up a number of possibilities with respect to intelligent analysis and management. Moreover, OntoWeaver includes providing high level support for developing customized web sites. Finally, it offers a powerful tool suite to support the design and development of data-intensive web sites. In the course of this research, we have also extended OntoWeaver by addressing the issue of integrating web service technology into a high level web site design framework
risk-e The risk management pathway, an e-learning tool for healthcare professionals.
This thesis investigates software methods that could reduce the frequency of adverse incidents in hospitals, using available best practices. The objective is to reduce the number of incidents in hospitals by helping the NHS staff gain a deep understanding of risk management with minimal distraction from their daily duties. The solution is an e-learning tool which combines web based e-learning and database management functionality. It provides the users with risk management educational material and appropriate database tools in order to be able to build up a risk action plans database based on their job experience and those educational materials. The software application has been developed based on a development methodology and a customized software development life cycle model. The research addressed the complexity and multidimensional nature of the risk management e-learning development approach in the health care environment. Throughout the research a deeper understanding of a variety of concepts and aspects in different fields has been gained and the appropriate educational platform and pedagogy for the system has been identified.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Determining factors for the success of trade show websites
The main purpose of this study is to evaluate appropriate quality factors of trade show websites as a marketing communication tool. These factors will be compared by measuring the impact on user satisfaction in the specific view of trade show attendees. This study also investigates what content items are effective in trade show websites; An online survey was designed and distributed via email in March 2006. In total, 369 responses were collected from the attendees of the World Tea Expo. The data was analyzed using multiple regression analysis. The findings indicated that the four proposed website quality factors were significantly related to the overall user satisfaction. The data further indicated which content items were important to their satisfaction about the website
Internet search techniques: using word count, links and directory structure as internet search tools
A thesis submitted for the degree of Doctor of Philosophy ofthe University of LutonAs the Web grows in size it becomes increasingly important that ways are developed to maximise the efficiency of the search process and index its contents with minimal human intervention. An evaluation is undertaken of current popular search engines which use a centralised index approach. Using a number of search terms and metrics that measure similarity between sets of results, it was found that there is very little commonality between the outcome of the same search performed using different search engines.
A semi-automated system for searching the web is presented, the Internet Search Agent (ISA), this employs a method for indexing based upon the idea of "fingerprint types". These fingerprint types are based upon the text and links contained in the web pages being indexed. Three examples of fingerprint type are developed, the first concentrating upon the textual content of the indexed files, the other two augment this with the use of links to and from these files.
By looking at the results returned as a search progresses in terms of numbers and measures of content of results for effort expended, comparisons can be made between the three fingerprint types. The ISA model allows the searcher to be presented with results in context and potentially allows for distributed searching to be implemented
A new approach to the development and maintenance of industrial sequence logic
This thesis is concerned with sequence logic as found in industrial control systems, with
the focus being on process and manufacturing control systems. At its core is the assertion
that there is a need for a better approach to the development of industrial sequence logic
to satisfy the life-cycle requirements, and that many of the ingredients required to deliver
such an approach are now available.
The needs are discussed by considering the business case for automation and
deficiencies with traditional approaches. A set of requirements is then derived for an
integrated development environment to address the business needs throughout the
control system life-cycle.
The strengths and weaknesses of relevant control system technology and standards are
reviewed and their bias towards implementation described. Mathematical models,
graphical methods and software tools are then assessed with respect to the requirements
for an integrated development environment.
A solution to the requirements, called Synect is then introduced. Synect combines a
methodology using familiar graphical notations with Petri net modelling supported by a set
of software tools. Its key features are justified with reference to the requirements. A set of
case studies forms the basis of an evaluation against business needs by comparing the
Synect methodology with current approaches. The industrial relevance and exploitation
are then briefly described.
The thesis ends with a review of the key conclusions along with contributions to
knowledge and suggestions for further research
Space and Earth Sciences, Computer Systems, and Scientific Data Analysis Support, Volume 1
This Final Progress Report covers the specific technical activities of Hughes STX Corporation for the last contract triannual period of 1 June through 30 Sep. 1993, in support of assigned task activities at Goddard Space Flight Center (GSFC). It also provides a brief summary of work throughout the contract period of performance on each active task. Technical activity is presented in Volume 1, while financial and level-of-effort data is presented in Volume 2. Technical support was provided to all Division and Laboratories of Goddard's Space Sciences and Earth Sciences Directorates. Types of support include: scientific programming, systems programming, computer management, mission planning, scientific investigation, data analysis, data processing, data base creation and maintenance, instrumentation development, and management services. Mission and instruments supported include: ROSAT, Astro-D, BBXRT, XTE, AXAF, GRO, COBE, WIND, UIT, SMM, STIS, HEIDI, DE, URAP, CRRES, Voyagers, ISEE, San Marco, LAGEOS, TOPEX/Poseidon, Pioneer-Venus, Galileo, Cassini, Nimbus-7/TOMS, Meteor-3/TOMS, FIFE, BOREAS, TRMM, AVHRR, and Landsat. Accomplishments include: development of computing programs for mission science and data analysis, supercomputer applications support, computer network support, computational upgrades for data archival and analysis centers, end-to-end management for mission data flow, scientific modeling and results in the fields of space and Earth physics, planning and design of GSFC VO DAAC and VO IMS, fabrication, assembly, and testing of mission instrumentation, and design of mission operations center
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