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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

A framework for the management of evolving requirements in software systems supporting network-centric warfare

Reynolds, Linda K. 06 1900 (has links)
Approved for public release, distribution unlimited / Network-centric warfare (NCW) has changed the way the Department of Defense addresses technological improvements for its military forces. No longer is the emphasis on enhancing the capabilities of a single platform, but the focus is now on networking people, processes and technology to enable knowledge sharing and rapid decision-making. The capabilities required to support network-centric operations (NCO) in the NCW environment must be supported by new, innovative networked communication technologies. There are many sources of requirements for these software systems supporting NCO, which may increase in number as the Services continue to develop the capabilities necessary for the transformation to a fully networked military force. Requirements may also emerge and continue to evolve following the fielding of a NCO capability because new technology has the potential to change how warfighters work. Requirements evolution results in requirements engineering challenges associated with the acquisition and development of network-centric software systems. As such, an approach is needed to provide for consistency in elicitation, management and documentation of evolving requirements for technological capabilities supporting NCO. The purpose of this research is to address the problem of evolving requirements. The requirements engineering framework proposed by this thesis incorporates classification theory and requirements modeling principles, and is supported by the Extensible Markup Language (XML) family of technologies. Particular attention has been paid to the selection of non-proprietary, platform independent technology to ensure data can be exchanged between organizations. The framework demonstrates a means by which requirements can be classified and structured in a standardized format. The result is a set of requirements that is consistent in structure and content, and that can be easily shared among all stakeholders because it utilizes one standard, non-proprietary format. This approach captures evolving software requirements of fielded network-centric software systems for use in the development of future systems. / US Navy (USN) author.
42

An XML-based knowledge management system of port information for U.S. Coast Guard Cutters

Stewart, Jeffrey D. 03 1900 (has links)
Approved for public release; distribution is unlimited / This thesis describes the development of a prototype application which collects, manages, and distributes knowledge gained by Coast Guard cutter crews making port calls throughout the world. The system uses XML technologies in server/client and stand alone environments. With a web browser, the user views and navigates the system's content from a downloaded file collection or from a centralized data source via a network connection. Users add and modify content with Hypertext Markup Language (HTML) forms using their existing network connections. Client-side data access and navigation, as well as data storage, is performed using non-proprietary standards developed by the World Wide Web Consortium (W3C) and the Internet Engineering Task Force (IETF). The prototype application's purpose is to fulfill the strategic goal of achieving superiority of maritime domain awareness over the areas in which the Coast Guard operates. The need for this application is based upon the lack of specific information from currently available reference publications, the absence of a system to distribute port call knowledge, and the data bandwidth limitations of cutters at sea. The need for knowledge retention aboard cutters is elevated by shortened crewmember assignment lengths due to the stressful and arduous duties of life at sea. / Lieutenant, U.S. Coast Guard
43

Updating Views Over Recursive XML

Jiang, Ming 06 January 2008 (has links)
We study the problem of updating XML views defined over XML documents. A view update is performed by finding the base updates over the underlying data sources that achieve the desired view update. If such base updates do not exist, the view update is said to be untranslatable and rejected. In SQL, determining whether a view update is translatable is performed using schema level analysis, where the view definition and the base schema are used. XML schemas are more complex than SQL schemas, and can specify recursive types and cardinality constraints. There are two kinds of view updates: single view element update, where the user requires for an update over a particular view element, and a set of view elements update, where the user requires for an update over all view elements that satisfy a given XPath over the view. Accordingly, we propose one solution for each kind of view update problems based on schema level analysis for determining whether an update over XML views is translatable and for finding the translation if one exists, while considering the features of XML schemas.
44

Schema extraction for semi-structured data. / CUHK electronic theses & dissertations collection

January 2002 (has links)
by Qiuyue Wang. / "July 2002." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (p. 74-82). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web.
45

The structured-element object model for XML.

January 2003 (has links)
Ma Chak Kei. / Thesis submitted in: July 2002. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 97-101). / Abstracts in English and Chinese. / ABSTRACT --- p.II / ACKNOWLEDGEMENTS --- p.VI / TABLE OF CONTENTS --- p.VII / LIST OF TABLES --- p.XI / LIST OF FIGURES --- p.XIII / Chapter CHAPTER 1. --- INTRODUCTION --- p.1 / Chapter 1.1 --- Addressing and Manipulating XML Data --- p.1 / Chapter 1.2 --- The Structured-Element Object Model (SEOM) --- p.3 / Chapter 1.3 --- Relate Research --- p.4 / Chapter 1.4 --- Contribution --- p.5 / Chapter 1.5 --- Thesis Overview --- p.6 / Chapter CHAPTER 2. --- BACKGROUND TECHNOLOGIES --- p.7 / Chapter 2.1 --- Overview of XML --- p.7 / Chapter 2.1.1. --- XML Basic Syntax --- p.8 / Chapter 2.1.2. --- Namespaces in XML --- p.8 / Chapter 2.2 --- Overview of XML Schema --- p.9 / Chapter 2.2.1. --- W3C XML Schema --- p.10 / Chapter 2.2.2 --- ", Schema Alternatives" --- p.13 / Chapter 2.3 --- Overview of XPath --- p.13 / Chapter 2.4 --- Overview of DOM --- p.15 / Chapter CHAPTER 3. --- OVERVIEW OF STRUCTURED-ELEMENT OBJECT MODEL (SEOM) --- p.18 / Chapter 3.1 --- Introduction --- p.18 / Chapter 3.2 --- Objectives --- p.20 / Chapter 3.3 --- General Concepts in SEOM --- p.21 / Chapter 3.3.1. --- Data Representation --- p.21 / Chapter 3.3.2. --- Data Binding --- p.24 / Chapter 3.3.3. --- Data Access --- p.25 / Chapter CHAPTER 4. --- SEOM DOCUMENT MODELING --- p.27 / Chapter 4.1 --- Data Modeling --- p.27 / Chapter 4.1.1. --- Simple XML Data Model --- p.28 / Chapter 4.1.2. --- SEOM Data Model --- p.32 / Chapter 4.2 --- Schema Modeling --- p.41 / Chapter 4.2.1. --- SEOM Schema --- p.42 / Chapter 4.2.2. --- Creating a Schema --- p.46 / Chapter CHAPTER 5. --- SEOM DOCUMENT PROCESSING --- p.51 / Chapter 5.1 --- SEOM Document Processing --- p.51 / Chapter 5.2 --- The Classes --- p.51 / Chapter 5.2.1. --- SEOM Document Class --- p.52 / Chapter 5.2.2. --- A bstract SElement Class --- p.55 / Chapter 5.2.3. --- Generic SElement Class --- p.56 / Chapter 5.2.4. --- Implementation SElement Classes --- p.57 / Chapter 5.3 --- XML Parsing and Data Binding --- p.59 / Chapter 5.3.1. --- Parsing Process --- p.60 / Chapter 5.4 --- Querying --- p.62 / Chapter 5.4.1. --- Query Wrapper and Result Wrapper --- p.62 / Chapter 5.4.2. --- Embedding in XPath --- p.68 / Chapter CHAPTER 6. --- AN WEB-BASED SEOM DOCUMENT QUERY SYSTEM --- p.71 / Chapter 6.1 --- Web-based SEOM Document Query System --- p.71 / Chapter 6.2 --- Client-Server Architecture --- p.71 / Chapter 6.3 --- The Server --- p.74 / Chapter 6.3.1. --- Data Loading --- p.74 / Chapter 6.3.2. --- Implemented SElement - R-Tree --- p.74 / Chapter 6.3.3. --- Network Interface --- p.80 / Chapter 6.4 --- Client Side --- p.82 / Chapter 6.4.1. --- The Interface --- p.82 / Chapter 6.4.2. --- Programmatic Controls --- p.85 / Chapter CHAPTER 7. --- EVALUATION --- p.88 / Chapter 7.1 --- Experiment with Synthetic Data --- p.88 / Chapter 7.2 --- Qualitative Comparison --- p.90 / Chapter 7.3 --- Advantages --- p.91 / Chapter 7.4 --- Disadvantages --- p.92 / Chapter 7.5 --- Means of Enhancement --- p.93 / Chapter CHAPTER 8. --- CONCLUSION --- p.94 / BIBLIOGRAPHY --- p.97
46

Semantic query optimization for processing XML streams with minimized memory footprint

Li, Ming. January 2007 (has links)
Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: optimization; XML; query evaluation; stream processing; database. Includes bibliographical references (p.66-67).
47

FoXQ : a visual query language for XML

Abraham, Robin 26 September 2003 (has links)
XML is a very versatile data format that has been used to represent many different kinds of data, including web pages, books, business and accounting data, programming interfaces, vector graphics, system logs, and games. In a short span of time, it has gained wide acceptance as the document and data standard on the web. As more and more XML data gets generated everyday, a lot of research focus has been on query languages for XML. The World-Wide Web Consortium (W3C) has chosen XQuery as the standard language for querying XML. From an end-user point of view, XQuery sacrifices usability for expressiveness. We introduce FoXQ, a visual language that enables end users to query XML. FoXQ brings a lot of the functionality of XQuery within the reach of the end users without getting them embroiled in the intricacies of XQuery syntax. The query interface is form-based and the query model is based on a document metaphor in which the users formulate queries by filling out forms. / Graduation date: 2004
48

Conflict detection and resolution during restructuring of XML data

Teterovskaya, Anna. January 2000 (has links) (PDF)
Thesis (M.S.)--University of Florida, 2000. / Title from first page of PDF file. Document formatted into pages; contains v, 111 p.; also contains graphics. Vita. Includes bibliographical references (p. 106-110).
49

Frames and Overflows in Rights Expression Languages

Gary J. Hausman 6 December 2006 (has links)
This paper analyzes the visions, schemas, and vocabularies of prominent rights expression languages, including Creative Commons, METS, ODRL, and MPEG-21. The paper extends Michel Callon’s sociological insight that all forms of human agency are multiple and diverse. Callon argues, in the context of economic sociology, that one must constantly decide between a strategy emphasizing “framing” as the norm with “overflows” treated as leaks, or conversely a strategy accepting “overflows” as the norm with “framing” as inherently imperfect. Callon’s categories are extended, through a modeling exercise, to the classification of current metadata schemes. The analysis suggests that metadata developers should explore what semantic choices and strictures are left out of metadata schemes, as well as those that are included. Such a thought exercise is especially useful in distinguishing areas suited for XML rights markup extensions.
50

Three XQuery optimization techniques implemented in IBM DB2 database system /

Xie, Guangjun. January 2007 (has links)
Thesis (M.Sc.)--York University, 2007. Graduate Programme in Computer Science. / Typescript. Includes bibliographical references (leaves 120-123). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR29315

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