@article {Ettazi2022117,
	title = {Design patterns for building context-aware transactional services in PaaS-enabled systems},
	journal = {International Journal of Web Engineering and Technology},
	volume = {17},
	number = {2},
	year = {2022},
	note = {cited By 0},
	pages = {117-143},
	abstract = {Pervasive computing is characterised by a key feature that affects the operating environment of services and users. It places more emphasis on dynamic environments where available resources continuously vary without prior knowledge of their availability, while in static environments the services provided to users are determined in advance. At the same time, cloud computing paradigm introduced flexibility of use according to the user{\textquoteright}s profile and needs. In this paper, we aimed to provide context-aware transactional service (CATS) applications with solutions so that it can be integrated and invoked like any service in the digital ecosystem. The motivation in this paper is to offer design patterns that will guarantee short reaction times and minimal human intervention. Our proposal includes a cloud service model by developing a PaaS service that allows CATS adaptation. A new specification for the validation of CATS model has been also introduced using the ACTA formalism. Copyright {\textcopyright} 2022 Inderscience Enterprises Ltd.},
	keywords = {ACTA, Cloud service models, Context- awareness, Context-Aware, Design Patterns, Distributed database systems, Key feature, ON dynamics, Operating environment, Paa, Platform as a Service (PaaS), Transactional service, Ubiquitous computing},
	doi = {10.1504/IJWET.2022.125651},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140992267\&doi=10.1504\%2fIJWET.2022.125651\&partnerID=40\&md5=60e1ee1cdbc8c6f1ce2d9b93a7d6fa0f},
	author = {Ettazi, W. and Hafiddi, H. and Nassar, M.}
}
@article {Ettazi202040,
	title = {CATS-CAE reflective middleware framework for adapting context-aware transactional services: Using a hybrid policy-based approach},
	journal = {International Journal of Web Services Research},
	volume = {17},
	number = {2},
	year = {2020},
	note = {cited By 2},
	pages = {40-58},
	abstract = {Pervasive environments are characterized by limited computing resources and wireless connectivity. In parallel, current application domains have variable transactional requirements that do not fit the traditional ACID model. As a result, the pervasive environment characteristics are compelling and cannot be supported by conventional solutions that are typically dedicated to a specific application domain and support a limited set of context parameters. This article aims at providing a complete solution that addresses the challenges of the adaptability of context-aware transactional services {\textquotedblleft}CATS{\textquotedblright} in pervasive environments. Thus, a new framework CATS-CAE was designed, which offers a comprehensive structure of multiple component chains. The adaptation strategy in CATS-CAE is based on a hybrid approach combining the use of adaptation policies, alternative strategy and behavioral adaptation of composite services through the {\textquotedblleft}Profiled Task Class{\textquotedblright} concept. A probabilistic model is also presented to support the efficiency of the proposed approach. Copyright {\textcopyright} 2020, IGI Global.},
	keywords = {ACID properties, Alternative strategy, Applications domains, Behavioral adaptation, Behavioral research, Context- awareness, Context-Aware, Middleware, Middleware frameworks, Pervasive environments, Reflective middleware, Transactional service},
	doi = {10.4018/IJWSR.2020040103},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116856218\&doi=10.4018\%2fIJWSR.2020040103\&partnerID=40\&md5=c368678a98b60e19ddac01a758494320},
	author = {Ettazi, W. and Nassar, M. and Hafiddi, H.}
}
