• Performance Analysis of Binding Update in Mobile IP during Handoff 

    Tandjaoui, Djamel; Badache, Nadjib; Bouabdallah, Abdelmadjid
    In : High Speed Networks and Multimedia Communications : 7th IEEE International Conference, HSNMC 2004, Toulouse, France, June 30 - July 2, 2004. Proceedings, (Springer Berlin Heidelberg, Berlin, 2004)
    Mobile IP protocol was proposed to handle users mobility on Internet. However, Mobile IP suffers from many drawbacks especially handoff latency. In this paper, we investigate the loss of successive binding update requests and their impact on handoff latency. We show that handoff latency increases in case of successive ...
  • ELS: Energy-Aware Some-for-Some Location Service for Ad Hoc Mobile Networks 

    Derhab, Abdelouahid; Badache, Nadjib; Tari, Karim; Sami, Sihem
    In : Ad-hoc, Mobile and Wireless Networks : 7th International Conference, ADHOC-NOW 2008 Sophia-Antipolis, France, September 10-12, 2008 Proceedings, (Springer Berlin Heidelberg, Berlin, 2006)
    In this paper, we propose a new location service for Ad hoc mobile networks. The network area is divided into non-overlapping zones. Using a hash function, a node identifier is mapped to a set of zones, in which the location information of the node are stored. We also propose a location information distribution scheme ...
  • An Architectural Model for a Mobile Agents System Interoperability 

    Zeghache, Linda; Badache, Nadjib; El Maouhab, Aouaouche
    In : New Technologies, Mobility and Security, (Springer, Netherlands, 2007)
    An important goal in mobile agent technology is interoperability between various agent systems. A way of achieving this goal would be to envisage a standard to be imposed on these various “agents systems” in order to allow the inter-working of various architectures of mobile agents. During the past years, different ...
  • Selfish Behavior on Packet Forwarding: An Emergent Security Problem in MANET 

    Djenouri, Djamel; Badache, Nadjib
    In : Encyclopedia of Wireless and Mobile Communications, (Auerback Publisher, United Kingdom, 2008)
    The limitation in energy resources along with the multi-hop nature of mobile ad hoc networks (MANETs) causes a new vulnerability, that does not exist in traditional networks. To preserve its own battery, a node may behave selfishly and would not forward packets originated from other nodes, while using their services and ...
  • Low-Cost and Accurate Intra-flow Contention-Based Admission Control for IEEE 802.11 Ad Hoc Networks 

    Derhab, Abdelouahid
    In : Ad-hoc, Mobile and Wireless Networks : 7th International Conference, ADHOC-NOW 2008 Sophia-Antipolis, France, September 10-12, 2008 Proceedings, (Springer Berlin Heidelberg, Berlin, 2008)
    In this paper, we propose a new admission control method for IEEE 802.11 ad hoc networks, called Low-cost and Accurate Admission control (LAAC). The proposed method has two variants: LAAC-Power and LAAC-CS. LAAC-Power estimates channel bandwidth availability through high power transmissions and LAAC-CS through passive ...
  • SQUIRREL: Self-Organizing Qos-roUting for IntRa-flow Contention in Ad-Hoc wiRELess Networks 

    Derhab, Abdelouahid
    In : Self-Organizing Systems : Third International Workshop, IWSOS 2008, Vienna, Austria, December 10-12, 2008. Proceedings, (Springer Berlin Heidelberg, Berlin, 2008)
    In this paper, we use the self-organizing paradigms presented in [1] to design a new QoS-routing intra-flow contention-based protocol for wireless ad-hoc networks, called SQUIRREL. The admission control component of SQUIRREL, called: Scalable and Accurate Admission control (SAICAC), has two variants: SAICAC-Power and ...
  • P2P B&B and GA for the Flow-Shop Scheduling Problem 

    Bendjoudi, Ahcène; Guerdah, Samir; Mansoura, Madjid; Melab, Nouredine; Talbi, El-Ghazali
    In : Metaheuristics for Scheduling: Distributed Computing Environments, Studies in Computational Intelligence, (Springer-Verlag, Berlin Heidelberg, 2008-09)
    Solving exactly Combinatorial Optimization Problems (COPs) using a Branch-and-Bound algorithm (B&B) requires a huge amount of computational resources. The efficiency of such algorithm can be improved by its hybridization with meta-heuristics such as Genetic Algorithms (GA) which proved their effectiveness, since they ...
  • Information Security in Wireless Sensor Networks 

    Ouadjaout, Abdelraouf; Bagaa, Miloud; Bachir, Abdelmalik; Challal, Yacine; Lasla, Noureddine; Khelladi, Lyes
    In : Encyclopedia On Ad Hoc And Ubiquitous Computing, (World Scientific, 2009-10)
    In this chapter, we provide a comprehensive survey of security issues in wireless sensor networks. We show that the main features of WSNs, namely their limited resources, wireless communications, and close physical coupling with environment, are the main causes of the their security vulnerabilities. We discuss the main ...
  • A Comparison on MANETs’ Service Replication Schemes: Interest versus Topology Prediction 

    Derhab, Abdelouahid; Hamdy, Mohamed; König-Ries, Birgitta
    In : Recent Trends in Wireless and Mobile Networks : Second International Conference, WiMo 2010, Ankara, Turkey, June 26-28, 2010. Proceedings, (Springer, Berlin, 2010)
    Mobile ad hoc networks (MANETs) are characterized by high dynamics in particular with respect to the formation of network partitions. The presence of unconnected partitions makes the deployed services inaccessible to some network participants. Service replication is employed as an approach to overcome this problem and ...
  • A Formal Approach for a Self Organizing Protocol Inspired by Bacteria Colonies: Production System Application 

    Mellah, Hakima; Hassas, Salima; Drias, Habiba; Raiah, A.; Tiguemoumine, A.
    In : Bioinspired Models of Network, Information, and Computing Systems : 4th International Conference, BIONETICS 2009, Avignon, France, December 9-11, 2009, Revised Selected Papers, (Springer Berlin Heidelberg, Berlin, 2010)
    Any dysfunction in production system (PS) is likely to be very expensive; so modelling by Multi Agent Systems (MAS) makes the production system (PS) possible to have aspects of robustness, reactivity and flexibility, which allow the PS control to be powerful and to react to all the risks being able to occur. In order to ...
  • Security in Mobile Ad hoc Networks Detection and lsolation of Selfish Nodes 

    Djenouri, Djamel; Badache, Nadjib
    In : (LAP LAMBERT Academic Publishing, Germany, 2010-11)
  • SecuRights 

    Khenak, Ferhat
    In : Theoretical and Mathematical Foundations of Computer Science : Second International Conference, ICTMF 2011, Singapore, May 5-6, 2011. Selected Papers, (Springer Berlin Heidelberg, Berlin, 2011)
    The technicality is no longer an obstacle; the issue of any environment of E-Learning (before) or V-Learning (now) is the production then the protection (in terms of security and confidentiality) of the content flowing through it. As part of our national policy of Visual Informatics For Education (VIFE), specifically for ...
  • Tags Weighting Based on User Profile 

    Kichou, Saida; Mellah, Hakima; Amghar, Youssef; Dahak, Fouad
    In : Active Media Technology : 7th International Conference, AMT 2011, Lanzhou, China, September 7-9, 2011. Proceedings, (Springer Berlin Heidelberg, Berlin, 2011)
    The ’Collaborative Tagging’ is gaining popularity on Web 2.0, this new generation of Web which makes user reader/writer. The ’Tagging’ is a mean for users to express themselves freely through additions of label called ’Tags’ to shared resources. One of the problems encountered in current tagging systems is to define the ...
  • Optimisation de la Consommation d'energie pour le Routage dans les Reseaux Mobiles Ad hoc 

    Djenouri, Djamel; Badache, Nadjib
    In : (Editions Universitaires Europeennes, Germany, 2011)
  • Special Issue on Interconnections of Wireless Sensor Networks 

    Derhab, Abdelouahid; Djenouri, Djamel; Jianguo, Ding
    In : (InderScience, Suisse, 2011-05)
  • An Ω-Based Leader Election Algorithm for Mobile Ad Hoc Networks 

    Melit, Leila; Badache, Nadjib
    In : Networked Digital Technologies : 4th International Conference, NDT 2012, Dubai, UAE, April 24-26, 2012. Proceedings, Part I, (Springer Berlin Heidelberg, Berlin, 2012)
    Leader election is a fundamental control problem in both wired and wireless systems. The classical statement of the leader election problem in distributed systems is to eventually elect a unique leader from a fixed set of nodes. However, in MANETS, many complications may arise due to frequent and unpredictable topological ...
  • Reducing Thread Divergence in GPU-Based B&B Applied to the Flow-Shop Problem 

    Chakroun, Imen; Bendjoudi, Ahcène; Melab, Nouredine
    In : Parallel Processing and Applied Mathematics : 9th International Conference, PPAM 2011, Torun, Poland, September 11-14, 2011. Revised Selected Papers, Part I, (Springer Berlin Heidelberg, Berlin, 2012)
    In this paper,we propose a pioneering work on designing and programming B&B algorithms on GPU. To the best of our knowledge, no contribution has been proposed to raise such challenge. We focus on the parallel evaluation of the bounds for the Flow-shop scheduling problem. To deal with thread divergence caused by the ...
  • Multi-Agent Liquidity Risk Management in an Interbank Net Settlement System 

    Hedjazi Dellal, Badiâa; Ahmed-Nacer, Mohamed; Aknine, Samir; Benatchba, Karima
    In : Active Media Technology : 8th International Conference, AMT 2012, Macau, China, December 4-7, 2012 : Proceedings, (Springer Berlin Heidelberg, Berlin, 2012)
    A net settlement system is a payment system between banks, where a large number of transactions are accumulated, usually waiting until the end of each day to be settled through payment instruments like: wire transfers, direct debits, cheques, .... These systems also provide clearing functions to reduce interbank payments ...
  • Semantic Annotations and Context Reasoning to Enhance Knowledge Reuse in e-Learning 

    Boudebza, Souad; Berkani, Lamia; Azouaou, Faiçal; Nouali, Omar
    In : Modeling Approaches and Algorithms for Advanced Computer Applications, (Springer Berlin Heidelberg, 2013)
    We address in this paper the need of improving knowledge reusability within online Communities of Practice of E-learning (CoPEs). Our approach is based on contextual semantic annotations. An ontological-based contextual semantic annotation model is presented. The model serves as the basis for implementing a context aware ...
  • Parallel GPU-Accelerated Metaheuristics 

    Loukil, Lakhdar; Silhadi-Mehdi, Malika; Bendjoudi, Ahcène; Melab, Nouredine
    In : Designing scientific applications on GPUs, (CRC Press, Taylor & Francis Group, 2013)