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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.
161

A model for the digital representation and transaction of complex pricing and ordering for high-value spatial products and services

Wagner, Roland M. Unknown Date (has links) (PDF)
Techn. University, Diss., 2003--Berlin.
162

Development of a bundling and resource re-allocation model in on demand business

Qi, Fei. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2007. / Title from title screen (site viewed July 12, 2007). PDF text: iii, 108 p. : ill. UMI publication number: AAT 3252831. Includes bibliographical references. Also available in microfilm and microfiche formats.
163

Flexible elearning platforms : a service oriented approach /

Westerkamp, Peter. January 2005 (has links)
University, Diss., 2005--Münster (Westfalen).
164

Uma ferramenta de apoio ao desenvolvimento de Web Services

Menéndez, Andrés Ignácio Martínez 08 1900 (has links)
Web services são componentes de software que oferecem uma funcionalidade específica. A grande vantagem é que estes componentes podem ser acessados por diferentes sistemas, através de padrões da Internet, como HTTP, XML e SOAP. A utilização desses padrões é que permite criar aplicações distribuídas com o uso de web services. Este trabalho explica em detalhes as tecnologias envolvidas na criação de web services e mostra a implementação de uma ferramenta de gerenciamento para os mesmos. _________________________________________________________________________________________ ABSTRACT: Web Services are software components that provide an especific funtionality. The great profit is that this components can be access by other systems, over Internet standards, like HTTP, XML and SOAP. The utilization of this standards allow to create distributed applications with web services. This work explain in details the tecnologies used in web services creation and show an implementation of a management tool for them.
165

Quality-aware Automated Service Composition using Reverse Engineering and Incomplete Information

Dantas, Ramide Augusto Sales 13 March 2012 (has links)
Submitted by Pedro Henrique Rodrigues (pedro.henriquer@ufpe.br) on 2015-03-05T19:29:15Z No. of bitstreams: 2 phd-thesis-vfinal-rasd.pdf: 2993974 bytes, checksum: a924d1ac8059a7b4a6c2775d60d5a742 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-05T19:29:15Z (GMT). No. of bitstreams: 2 phd-thesis-vfinal-rasd.pdf: 2993974 bytes, checksum: a924d1ac8059a7b4a6c2775d60d5a742 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2012-03-13 / Service Composition is one of the most important features offered by Service Oriented Computing. The composition allows a new service to be created through the reuse of existing ones. The process of creating a composition involves discovering the necessary services and combining them in an appropriate manner using specific languages and tools. This process, however, is still carried out mainly by hand. Considering the dynamic nature of distributed services, manual composition may become too complex, affecting the productivity gains provided by reuse. Proposals to fully or partially automate this process already exist, most of them based on Automated Planning algorithms borrowed from Artificial Intelligence. Although functional, these approaches have practical problems that hinder their effective implementation in production scenarios. In this Thesis, we addressed some of the practical problems of automated composition, starting with the need for formal descriptions of services. These formal descriptions are necessary for the composition algorithms, however, are rarely available from services. This issue was addressed by means of reverse engineering a repository of service compositions. By analyzing how the services were related to each other in the compositions, it was possible to obtain the necessary information for the algorithms to work. We also evaluated the quality of the compositions generated by the algorithms and their similarity with respect to compositions created manually. Automated Planning algorithms from the literature have been modified in order to generate solutions closer to those expected by the developer. Finally, the composition algorithms were adapted to accept incomplete specifications, thus allowing the developer to obtain a solution even not knowing a priori all the composition details. Comparisons with automated planning tools were conducted in order to ascertain the effectiveness of the algorithms. The results show that the automated composition, as presented in the Thesis, can be an invaluable tool to the service developer.
166

Performance evaluation of J2EE & .NET web services interacting with a .NET client

Nakka, Raja Sanjeev Kumar January 1900 (has links)
Master of Science / Department of Computing and Information Sciences / Daniel A. Andresen / The objective of this project is to build an e-commerce website using ASP.NET as well as J2EE technologies. Visual Studio 2005 provides a great IDE to build seamless front end layer for the websites with minimum effort. Hence, it is used to build the presentation layer. The business logic layer is developed in ASP.NET 2.0 and J2EE, exposing the functions as web services. Two similar clients have been developed in ASP.NET. These two clients invoke the .NET and J2EE web services. The two similar websites are subjected to testing for correctness and performance. Stress and load testing is performed thoroughly on the website. A detailed analysis of the results is done using the response times and throughputs from various tests. This report proves that we can build a website using a presentation tier developed in ASP.NET consuming any of the two technologies’ (ASP.NET & J2EE) web services. This proves to be very useful in scenarios where we need the best overall user experience regardless of the technology, to replace or extend an existing business tier by using a different technology.
167

Webové služby a jejich podpora v Javě / Web Services and their support in Java

Kubal, Pavel January 2008 (has links)
This thesis aims to provide a comprehensive view on the topic of tools for support generation of Java based web services. First half of the thesis focuses on theoretical part of the topic and introduces related basic terms to the reader. Second part deals with the examination of the market with tools for support generation of web services. The output of the thesis is summarization of features provided by three major players on the market and this follow practical advices gained during the process of working on this thesis.
168

Putting the Web Services Specifications to REST

Olsen, Dan R. 12 March 2008 (has links)
Web services have become a useful and effective way of sharing information over the World Wide Web. SOAP has become a popular way of providing Web services and has been the focus of the Web Services specifications. The Web Services specifications provide additional capabilities to Web Services such as security and policy exchange. Another popular form of Web services includes light-weight Web or RESTful Web services over HTTP. These light-weight Web services are currently not addressed by the Web Services specifications. In order to provide the same capabilities to RESTful Web services, the Web Services specifications will be used to extend the HTTP protocol to provide the additional capabilities. This work will show how the HTTP protocol can be extended using existing well defined specifications to provide extra capabilities such as security to RESTful Web services.
169

Reputation-based Trust Framework for Service Oriented Environments

Malik, Zaki 02 December 2008 (has links)
We investigate the problem of establishing trust in service-oriented environments. We focus on providing a reputation framework that would enable trust-based interactions with and amongst Web services. We define methods for the creation of reputation information, its collection, and assessment that are robust in the face of a variety of attacks. Our framework (denoted RATEWeb) supports a cooperative model in which Web services share their experiences of the service providers with their peers through feedback ratings. The different ratings are aggregated to derive a service provider's reputation. This in turn is used to evaluate trust. For situations where rater feedbacks are scarce, we use statistical forecasting (particularly, a Hidden Markov Model) to ascertain trust. The approaches and techniques developed under the RATEWeb framework facilitate the optimal selection and/or composition of Web services based on service reputations. We conduct an extensive performance study (analytical and experimental) to assess the fairness and accuracy of the proposed techniques. / Ph. D.
170

ARTS and CRAFTS: Predictive Scaling for Request-Based Services in the Cloud

Guenther, Andrew 01 June 2014 (has links) (PDF)
Modern web services can see well over a billion requests per day. Data and services at such scale require advanced software and large amounts of computational resources to process requests in reasonable time. Advancements in cloud computing now allow us to acquire additional resources faster than in traditional capacity planning scenarios. Companies can scale systems up and down as required, allowing them to meet the demand of their customers without having to purchase their own expensive hardware. Unfortunately, these, now routine, scaling operations remain a primarily manual task. To solve this problem, we present CRAFTS (Cloud Resource Anticipation For Timing Scaling), a system for automatically identifying application throughput and predictive scaling of cloud computing resources based on historical data. We also present ARTS (Automated Request Trace Simulator), a request based workload generation tool for constructing diverse and realistic request patterns for modern web applications. ARTS allows us to evaluate CRAFTS' algorithms on a wide range of scenarios. In this thesis, we outline the design and implementation of both ARTS and CRAFTS and evaluate the effectiveness of various prediction algorithms applied to real-world request data and artificial workloads generated by ARTS.

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