Research Topics
My main fields of interest are concentrated on deployment and management of adaptive distributed applications.In fact,improving information propagation in distributed systems is an important concern of publish/subscribe systems especially when deployed on mobile ad-hoc networks.These networks are characterized with dynamic topology, limited bandwidth, strong constraints on energy, limited physical security and lack of infrastructure. In this context, it?s imperative to maintain good quality of service and react before failure. Our goal is first to optimize the overall performance of the system by ensuring desired QoS, then to ensure information delivery to consumers in case of dispatcher or link failures. In our work, we overcome the above mentioned problems by suggesting a global autonomic architecture to support adaptation and self-organization of publish/subscribe system built on MANET. Thus, we focus on providing a decentralized approach for P/S system self-adaptativity ensuring both message delivery and QoS requirements. Our system is based on the self-adaptativity process forming a fully autonomic loop that maps to the monitor, analyze, plan and execute control loop. Thus, the system has to monitor itself, to detect QoS degradation or predict a failure, to look for a solution and finally to execute it. The approach embodied in our architecture reasons locally by creating an autonomic component in each node, responsible for local adaptation in case of QoS degradation. Then, we extend the local adaptation scope by considering cooperative issues by interacting the different models encapsulated in nodes in order to ensure the global desired QoS.

Master's thesis
QoS aware publish/subscribe system deployed on a mobile ad hoc network

Publications

International Conferences Papers

• Imene Lahyani, Lamia Ben Amor, Mohamed Jmaiel, Khalil Drira and Christophe Chassot. Analytical Framework for QoS aware Publish/Subscribe System deployed on MANET. In the 10th IEEE International Symposium on Parallel and Distributed Processing with Applications (ISPA 2012). July 10-13, 2012. Leganés, Madrid. IEEE Computer Society.

• Imene Lahyani, Mouna Guassara, Mohamed Jmaiel and Christophe Chassot. Predictive schemes for QoS awareness of publish/subscribe systems on MANET. In the 11th International Symposium on Parallel and Distributed Computing (ISPDC 2012). June 25-29, 2012. Munich, Germany. IEEE Computer Society.

• Imene Lahyani, Wafa Makki and Christophe Chassot. Failure Prediction for Publish/Subscribe System on MANET. In the 21 st International Conference Collaboration Technologies and Infrastructure (WETICE 2012). 2nd Track on Adaptive and Reconfigurable Service-oriented and component-based Applications and Architectures (AROSA 2012). June 25-27, 2012. Toulouse, France. IEEE Computer Society. [DOI ]

• Imene Lahyani, Ismael Bouassida Rodriguez, Mohamed Jmaiel and Chrisptophe Chassot.  Towards self healing publish/subscribe system on MANET. In the 21 st International Conference Collaboration Technologies and Infrastructure (WETICE 2012), (CT2CM 2012). June 25-27, 2012. Toulouse, France. IEEE Computer Society. [DOI ]

• Imene Lahyani, Nesrine Khabou, and Mohamed Jmaiel. QoS Monitoring and Analysis Approach for Publish/Subscribe Systems deployed on MANET, In The 20th Euromicro International Conference on Parallel, Distributed and Network-based Processing (PDP 2011). February 15-17, 2012, Garching, Germany. pages 120-124. IEEE Computer Society. [DOI ]

• Imene Lahyani and Mohamed Jmaiel. Experimentations for QoS Evaluation of Publish/Subscribe Systems deployed on Ad-hoc Network, In the 6 th International Workshop on Performance Analysis and Enhancement of Wireless Networks (PAEWN’11): IEEE Workshops of International Conference on Advanced Information Networking and Applications, March 22-25, 2011, Biopolis, Singapore. pages 676-681, IEEE Computer Society. [DOI ]

• Imene Lahyani, Soumaya Marzouk, and Mohamed Jmaiel. QoS aware publish-subscribe system deployed on a mobile ad-hoc network.. Journal of SIWN - The Systemics and Informatics World Network, Volume 7:84-90, May 2009. In the 5th International Conference on Self-organization and Adaptation of Computing and Communications (SACC 2009), March 23-25, 2009, Leipzig, Germany. [ BibTeX   ]

Educational activities

Teaching assistant
National School of Engineers of Sfax
Department of the Computer Science and Applied Mathematics (DGIMA)
University of Sfax-Tunisia