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Previous issue date: 2008-11-10 / Ubiquitous computing systems operate in environments where the available resources significantly change during the system operation, thus requiring adaptive and context aware mechanisms to sense changes in the environment and adapt to new execution contexts. Motivated by this requirement, a framework for developing and executing adaptive context aware applications is proposed. The PACCA framework employs
aspect-oriented techniques to modularize the adaptive behavior and to keep apart the application logic from this behavior. PACCA uses abstract aspect concept to provide
flexibility by addition of new adaptive concerns that extend the abstract aspect. Furthermore, PACCA has a default aspect model that considers habitual adaptive
concerns in ubiquitous applications. It exploits the synergy between aspect-orientation and dynamic composition to achieve context-aware adaptation, guided by predefined policies and aim to allow software modules on demand load making possible better use of mobile devices and yours limited resources. A Development Process for the ubiquitous applications conception is also proposed and presents a set of activities that
guide adaptive context-aware developer. Finally, a quantitative study evaluates the approach based on aspects and dynamic composition for the construction of ubiquitous applications based in metrics / Aplica??es para a computa??o ub?qua operam em ambientes onde a disponibilidade de recursos muda significativamente durante a sua opera??o. Tal caracter?stica demanda que aplica??es sejam adaptativas e cientes do seu contexto de execu??o. Visando
atender esses requisitos, ? proposto o PACCA (Projeto de Aplica??es Ciente ao Contexto e Adaptativas), um arcabou?o para desenvolvimento e execu??o de aplica??es adaptativas cientes de contexto. O paradigma de orienta??o a aspectos ? usado no PACCA para modularizar o comportamento adaptativo e dissoci?-lo da l?gica da aplica??o. Para prover maior flexibilidade o PACCA utiliza o conceito de aspecto abstrato para permitir a extens?o e adi??o de novos interesses adaptativos, al?m de um modelo de aspectos default que contempla interesses adaptativos comuns a grande parte das aplica??es ub?quas. A orienta??o a aspectos aliada ? composi??o din?mica de software oferece suporte para adapta??o ciente ao contexto, guiada por pol?ticas
previamente definidas e tem por objetivo permitir a carga de m?dulos de software sob demanda possibilitando melhor utiliza??o dos recursos limitados de um dispositivo
m?vel. Um Processo de Desenvolvimento para a constru??o de aplica??es ub?quas tamb?m ? proposto e visa demonstrar um conjunto de atividades a serem executadas para a concep??o de aplica??es ub?quas. Por fim, ? realizado um estudo quantitativo com o intuito de avaliar com base em m?tricas a abordagem baseada em aspectos e composi??o din?mica para a constru??o de aplica??es ub?quas
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17993 |
| Date | 10 November 2008 |
| Creators | Santos, Isanio Lopes Ara?jo |
| Contributors | CPF:39900533100, Pires, Paulo de Figueiredo, CPF:84384921772, http://lattes.cnpq.br/1304174767727101, Musicante, Martin Alejandro, CPF:82500304434, http://lattes.cnpq.br/6034405930958244, Batista, Thais Vasconcelos, CPF:56765614400, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784543T8, Pirmez, Luci, CPF:66355117768, http://lattes.cnpq.br/3763390337091127, Delicatto, Fl?via Coimbra |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Sistemas e Computa??o, UFRN, BR, Ci?ncia da Computa??o |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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