Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains ix, 95 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 75-79).

Thesis (M.S.)--Ohio University, August, 1994. / Title from PDF t.p.

<p> Software Evolution is unavoidable because software systems are subject to continuous change, continuing growth and increasing complexity. As software systems become mission-critical and large in size, the complexity in software development is now focused on software evolution rather than construction. In this work, we view a software system as an entity that is evolving throughout its lifetime, during development and maintenance. Based on a broad survey of software evolution approaches, we propose an architecture-based solution for software evolution, which is defined in terms of evolution specific operations on architectural elements, that is, adding, removing, replacing components and (or) connectors, transforming configurations according to the required changes. In our view of software architectures, connectors are more likely to change since they are the architectural elements which reflect business rules. This work is focused on the evolution of connectors in architectures describing detailed design. Coordination contracts are introduced by Fiadeiro et al. as a realization of connectors at this detailed architecture level, which enables a three-layer architecture to separate concerns of components, connectors and configuration during evolution. Furthermore, to constrain the evolution in a predictable direction, we have established a matching scheme for justifying behavioral relationships between coordination contracts by specification matching based on pre- and postconditions of contracts and methods. A number of specification matches, with various degrees of similarity between the evolved and evolving contracts, have been developed for system behaviors after evolution operations. Case studies are exhibited give a better understanding of these matches.</p> / Thesis / Master of Science (MSc)

Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains xi, 126 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 121-126).

Thesis (M.Sc.)--York University, 2007. Graduate Programme in Software Engineering. / Typescript. Includes bibliographical references (leaves 153-155). 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:MR38796

Thesis (Ph.D.)--Mississippi State University. Department of Computer Science and Engineering. / Title from title screen. Includes bibliographical references.

Orientador: Cecilia Mary Fischer Rubira / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação / Made available in DSpace on 2018-08-15T17:22:42Z (GMT). No. of bitstreams: 1 Dias_MarcelodeOliveira_M.pdf: 4085359 bytes, checksum: c41b2892cccbfb8a55cf89dc93b47f00 (MD5) Previous issue date: 2010 / Resumo: Muitos esforços estão sendo feitos, atualmente, para se obter um alto grau de reutilização durante o desenvolvimento de sistemas. Linhas de produtos de software (LPS) é uma abordagem moderna para promover a reutilização de software. Um dos principais artefatos de uma LPS é sua Arquitetura de Linhas de Produtos (ALP), que provê uma perspectiva global das variabilidades da linha, ao passo que engloba os conceitos tradicionais de uma arquitetura de software. Devido as variabilidades de software de uma ALP, a evolução arquitetural é ainda mais complexa, do que quando comparado com evolução de arquiteturas de software convencionais. O objetivo principal deste trabalho é propor um novo modelo para especificar e implementar variabilidades de software em ALPs baseadas em componentes, de forma a facilitar a evolução arquitetural. A solução proposta é um refinamento do modelo de implementações de componentes COSMOS*, chamado COSMOS*-VP, que emprega a modularização de pontos de variação explícitos e modernas abordagens de programação orientada a aspectos, com o intuito de promover a estabilidade arquitetural, e assim, facilitar a evolução de ALPs. A validação do modelo proposto foi feita utilizando duas LPS, que sofreram diversos cenários de evolução reais. Durante as evoluções, as ALPs criadas utilizando COSMOS*-VP tiveram a estabilidade mensurada através de métricas de impacto de mudanças e modularidade. Os resultados obtidos para o modelo proposto foram comparados com os alcançados utilizando o modelo COSMOS* original / Abstract: Nowadays, many efforts are being made to achieve a high degree of reuse during systems development. Software Product Lines (SPL) is a modern approach to improve software reuse, and one of its main artifacts is the Product Line Architecture (PLA). A PLA provides a global view of the variabilities of a SPL, while it embodies the concepts and advantages of the traditional software architecture. Due to its variabilities, a PLA is harder to evolve than a convetional software architecture. The main goal of this work is to propose a new model to specify and implement software variabilities of component-based PLAs. Our proposed solution is an extension of the component implementation model COSMOS*, called COSMOS*-VP, which employs specific elements and modern aspect-oriented approaches to modularize architectural variation points, aiming at the improvement of architectural stability of PLAs, and thus, facilitating their evolution. The validation of the proposed solution was made using two SPLs, which were targed of several real evolution scenarios. During the evolution, the PLAs created using COSMOS*-VP had their stability measured using metrics of change impact and modularity. The results of the proposed model were compared with those achieved using the COSMOS* model / Mestrado / Engenharia de Software / Mestre em Ciência da Computação

Thesis (Ph. D.)--University of New South Wales, 2005. / Also available online.