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Achraf GAZDAR
Assistant Professor

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Biography


I received my PhD and Master diplomas in computer science from the National School of Computer Sciences (ENSI). I received my bachelor degree in computer science applied to management from the High School of Management in Tunis (ISG) and the Baccalaureate in mathematic from the technical school of Grombalia (42 km to the south of Tunis). My research interests concern video on demand systems and video broadcasting protocols, peer-to-peer networks and protocols and their requirements in both wired and wireless networks.

Education

Year : 2007
Diploma : Ph.D. in Computer Science, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie.
Under the supervision of :
Thesis Title : Studying and Implementing the Interactivity in VoD System
Composition of the Jury :
  • Pr. Abdelmajid Ben Hmadou, Tunisie
  • Pr. Habib Youssef, Tunisie
  • Pr. Mohamed Mosbah, France
  • Pr. Bechir El Ayeb, Tunisie
  • Pr. Abdelfettah BELGHITH, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie

 

Year : 2002
Diploma : Master in computer Science, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie.
Under the supervision of :
Thesis Title : Studying the Interactivity in VoD System
Composition of the Jury :
  • Pr. Faouzi Ghorbel, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie
  • Pr. Leila Azzouz Saidane, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie
  • Pr. Abdelfettah BELGHITH, Ecole Nationale des Sciences de l'Informatique (ENSI), Tunisie

 

Year : 2002
Diploma : Licence in applied computer Science (4 years diploma after the Baccalaureate) (ISG), Tunisie.
Thesis Title : Annnotation of Arabic Tables of Contents of Scientific Journals


Publication

  1. , , , , , "HLPSP: A Hybrid Live P2P Streaming Protocol", Transactions on Internet and Information Systems, (TIIS), Vol. 9, Issue 3, pp.1035-1056, .
  2. Chourouk Hammami, Achraf Gazdar, Imen Jemili, and Abdelfettah Belghith, "Study of VOD streaming on BitTorrent", The 2015 International Symposium on Networks Computers and Comunications: ISNCC2015, Yasmine Hammamet, May 13-15, 2015.
  3. Chourouk Hammami, Imen Jemili, Achraf Gazdar, Abdelfettah Belghith, Mohamed Mosbah, "Hybrid Live P2P Streaming Protocol", ANT/SEIT 2014: 158-165, Elsevier Procedia Computer Science 32 ( 2014 ) 158 – 165, 2014.
  4. Chourouk Hammami, Achraf Gazdar and Abdelfettah Belghith, "Departure Handling in Hybrid Live P2P Streaming Protocol", The 16th International Telecommunications Network Strategiy and Planning Symposium: NETWORKS'14, September 17-19, Funchal, Madeira Island, Portugal, 2014.
  5. Achraf Gazdar, Zeinib Langar and Abdelfettah Belghith, "A Distributed Cooperative Detection Scheme for SPIT Attacks in SIP Based Systems", International Conference on Networks of the Future (NoF 2012), Tunis, Tunisia, November 21-23, 2012.
  6. Achraf Gazdar and Abdelfettah Belghith, "Optimizing Proxy Server Bandwidth in Local VoD Distribution", International Journal of Computing and E-Systems JC&eS, Volume 2, No. 1, pp. 70-75, 2009.
  7. Achraf Gazdar and Abdelfettah Belghith, "Optimizing Proxy Server Bandwidth in Local VoD Distribution", The International Group of e-Systems Research and Applications (Tigera2009), Best Paper Award, Hammamet, Tunisia, March 16-18, 2009.
  8. Achraf Gazdar and Abdelfettah Belghith, “Interactive Slotted Stream Tapping“, Computer Communications Journal, Elsevier, Volume 32, Issue 4, Pages 653-661, 4 March 2009.
  9. Abdelfettah Belghith and Achraf Gazdar, “Generalization of Fixed Delay Broadcasting Protocols”, The third ACM International Conference on Intelligent Computing and Information Systems, ICICIS 2007, Cairo, Egypt, March 15-18, 2007.
  10. Achraf Gazdar and Adbelfettah Belghith, “Practical Efficiencies of Slotted StreamTapping in IP Networks”, International Journal of Computing & Information Sciences (IJCIS), Vol.ume 5, No. 1, pp. 4-12, April 2007.
  11. Achraf Gazdar and Abdelfettah Belghith,“ Un Protocole VoD Interactif : VCISB", The 7th International Conference on New Technologies of Distributed Systems, NOTERE'07, Marrakech, Maroc, Juin 4-8, 2007.
  12. Achraf Gazdar and Abdelfettah Belghith,“Discrete Optimal Broadcasting Protocol in an IP Network", The ACS/IEEE International Conference on Computer Systems and Applications (AICCSA-06), Dubai, Sharjah, UAE, March 2006.
  13. Achraf Gazdar and Abdelfettah Belghith,“Etude et Implémentation d’une Solution VoD Hybride", Scientific Days of Young Researchers in Electrical Engineering and Informatics (GEI-06), Hammamet, Tunisie, Mars 2006.
  14. Achraf Gazdar and Abdelfettah Belghith,“Hybrid Broadcasting Protocols : a Comparative Study", IEEE Symposium on Signal Processing and Information Technology (ISSPIT-04), Rome, Italie, December 2004.
  15. Achraf Gazdar and Abdelfettah Belghith,“Slotted Stream Tapping", ACM Workshop on Next-generation Residential Broadband Challenges, New York, USA, Octobre 2004.
  16. Achraf Gazdar and Abdelfettah Belghith,“Etude Analytique d’une Solution Interactive Continue pour la Diffusion de la Vidéo dans les Systèmes VoD", Colloque Africain sur la Recherche en Informatique (CARI-04), Hammamet, Tunisie, Novembre 2004.
  17. Achraf Gazdar and Abdelfettah Belghith,“Discrete Interactive Staggered Broadcasting", IEEE Consumer Communications and Networking Conference (ICCNC 2004), Las Vegas, USA, Janvier 2004.
  18. Achraf Gazdar and Abdelfettah Belghith,“Etude et Implémentation d’une Solution Interactive pour la Diffusion de la Vidéo dans l’Internet", International Conference on Electronic Sciences, Information Technology and Telecommunications(SETIT- 03), Sousse, Tunisie, Mars 2003.
  19. Abdelfettah Belghith, Sami Tabbane, Naouel Ben Ali, Achraf Gazdar, "Med-Hoc-Net 2003" Proceedings of the 2nd Mediterranean Workshop on Ad-Hoc Networks, IFIP TC6, Mahdia, Tunisia, 25-27 June, 2003.

Research


I am preparing my habilitation degree in the national school of computer sciences. I am working on streaming issues in P2P networks in both wired and wireless networks. I am also working on interactive video on demand broadcasting protocols and their implementation on IP networks. I am currently starting research on content networking.

Co-Supervision

 

Current Ph.D. Students
Current Master Students
Past Master Students (Graduated from HANA)

 
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