Publications

Journal Publications:.

  • Ever, E., Gemikonakli, O., Kocyigit, A., and Gemikonakli, E., (2012), “A Hybrid Approach to Minimize State Space Explosion Problem for the Solution of Two Stage Tandem Queues”. Journal of Network and Computer Applications (the journal is in SCI Expanded). (ACCEPTED). http://dx.doi.org/10.1016/j.jnca.2012.10.006
  • Ever, E.Gemikonakli, O. and Chakka, R. (2009),“Analytical Modelling and Simulation of Small Scale, Typical and Highly Available Beowulf Clusters with Breakdowns and Repairs”. Journal of Simulation Modelling Practice and Theory (Journal of the Federation of European Simulation Societies - EUROSIM Former title: Simulation Practice and Theory). Volume 17, Issue 2. pp: 327-347
  • Gemikonakli O., Ever, E.,and Kocyigit, A. (2009), “Approximate Solution for Two Stage Open Networks with Markov-modulated Queues Minimizing the State Space Explosion Problem”. Journal of Computational and Applied Mathematics. Volume 223,Issue 1,ISSN: 0377-0427. pp519-533.
  • Chakka, R.,Ever, E., Gemikonakli, O., (2006) “An Approach to Modelling Open Networks with Unreliable Servers and Finite Buffers”, WSEAS Transactions on Computers, Vol5, Issue 11, November 2006, ISSN 1109-2750, pp.2536-2543.

Conference Papers:

  • Kirsal, Y., Ever, E., Mapp, G., andGemikonakli, O., (2013), “Enhancing the Modelling of Vertical Handover in Integrated Cellular/WLAN Environments", inProceedings of, The 27th IEEE International Conference on Advanced Information Networking and Applications (AINA-2013), Barcelona, Spain, 25 - 28 March, 2013 (ACCEPTED).
  • Gemikonakli, E.,Mapp, G., Gemikonakli, O., and Ever, E., (2013), “Exploring Service and Buffer Management Issues to Provide Integrated Voice and Data Services in Single and Multi Channel Wireless Networks", inProceedings of, The 27th IEEE International Conference on Advanced Information Networking and Applications (AINA-2013), Barcelona, Spain, 25 - 28 March, 2013 (ACCEPTED).
  • Doddapaneni, K., Ever, E., Gemikonakli, O., Mostarda, L., and Navarra, A., ''Effects of IDSs on the WSNs Lifetime: Evidence for the need of new approaches'', Third International Symposium on Mobile and Wireless Network Security (MWNS-12), In conjunction with 11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom-12). Liverpool, UK, 25-27 June, 2012.
  • Doddapaneni, K., Ever, E., Gemikonakli, O., Malavolta, I., Mostarda, L., Muccini, H., (2012), “A Model-Driven Engineering Framework for Architecting and Analysing Wireless Sensor Networks”, In ACM/IEEE proceedings of Third International Workshop on Software Engineering for Sensor Network Applications SESENA 2012(conjunction with ACM/IEEE Intl. Conference on Software Engineering, ICSE) 2-9 June, 2012, Zurich, Switzerland.
  • Kirsal, Y., Gemikonakli, O., Ever, E., and Mapp, G., (2012), " Performance Analysis of Handovers to Provide a Framework for Vertical Handover Policy Management in Heterogeneous Environments", in IEEE Proceedings of 45thAnnual Simulation Symposium, (ANSS'12), 26-30 March, 2012, Florida.
  • Doddapaneni, K., Ever, E., Gemikonakli, O., Malavolta, I., Mostarda, L., Muccini, H., (2012), “Pathloss effect on energy consumption in a WSN”, inIEEE Proceedings of UKSim 2012: 13th International Conference on Computer Modelling and Simulation, 28 - 30 March 2012, Cambridge University.
  • E. Ever, R. Luchmun, L. Mostarda, A. Navarra and P. Shah, (2012), "UHEED - an Unequal Clustering Algorithm for Wireless Sensor Networks", In Proceedings of the 1st International conference on sensor networks (SENSORNETS 2012). Rome, Italy February 24-26.
  • Y. Kirsal, E. Ever, O. Gemikonakli and G. Mapp, (2011), "Modelling and Performability Analysis of WLANs as a Queuing Model with Channel/Access Point Failures and Reconfiguration", InProceedings of European Modelling Symposium (EMS 2011). Universidad Politécnica de Madrid, Madrid, Spain, November 16-18.
  • Y. Kirsal, E. Ever, O. Gemikonakli and G. Mapp, (2011), "Critical Review of Analytical Modelling Approaches for Performability Evaluation of the Handover Phenomena in Mobile Communication Systems", In IEEE Proceedings of 11th IEEE International Conference on Computer and Information Technology (CIT 2011). Paphos, Cyprus, Aug 31 - Sep 2.
  • E. Gemikonakli, G. Mapp, O. Gemikonakli, and E. Ever, (2011), “Traffic Modelling in WLANs and Cellular Networks", In the IEEE Conference on Communication, Science & Information Engineering CCSIE 2011. London, 25-27 July.
  • E. Gemikonakli, O. Gemikonakli, E. Ever and G. Mapp "Impacts of Buffering of Voice Calls in Integrated Voice and Data Services" In proceedings of UKSim 2011: 13th International Conference on Computer Modelling and Simulation, 2011, Cambridge University.
  • Taherkhani, S.,E. Ever, O. Gemikonakli (2010), "Implementation of Non-Pipelined and Pipelined Data Encryption Standard (DES) Using Xilinx Virtex-6 FPGA Technology", In IEEE Proceedings of, 10th IEEE International Conference on Computer and Information Technology (CIT 2010). Bradford, 29 June- 1 July.
  • Y. Kirsal, E. Gemikonakli, E. Ever, G. Mapp, and O. Gemikonakli (2010) "An Analytical Approach for Performance Analysis of Handoffs in the Next Generation Integrated Cellular Networks and WLANs", In IEEE Proceedings of, 4th IEEE workshop on performance modeling and evaluation in computer and telecommunication networks (IEEE PMECT 2010 at IEEE ICCCN 2010). Zurich, 2-5 August.
  • Gemikonakli O., E. Ever, E. Gemikonakli (2010), "Performance Modelling of Virtualized Servers", In IEEE Proceedings of UKSim 2010: 12th International Conference on Computer Modelling and Simulation, 2010, Cambridge University, 24-26 March. pp. 434-440.
  • Ever. E., Y. Kirsal, O. Gemikonakli (2009), "Performability Modelling of a Kerberos Server with Frequent Key Renewal under Pseudo-Secure Conditions for Increased Security", In IEEE Proceedings of CTIT’09: The 2009 International Conference on the Current Trends in Information Technology, Dubai, United Arab Emirates, 15-16 December.
  • Ever. E., Y. Kirsal, O. Gemikonakli (2009), "Performability Modelling of Handoff in Wireless Cellular Networks and the Exact Solution of System Models with Service Rates Dependent on Numbers of Originating and Handoff Calls", In IEEE Proceedings of CSSim2009: International Conference on Modelling and Simulation, Czech Republic, 7-9 September.
  • Kara-Zaitri, C., E. Ever, (2009), "A Hardware Accelerated Semi Analytic Approach for Fault Trees with Repairable Components", In IEEE Proceedings of UKSim 2009: 11th International Conference on Computer Modelling and Simulation, 2009, pp.146-151.
  • Gemikonakli O, Sanei H., Ever, E., and Kocyigit, A. (2008), "An Analytical Approach for Optimising the Number of Repairmen for Large Scale, Homogeneous, Multi-server Systems", In 20th European Modelling & Simulation Symposium (EMSS 2008), Briatico, South Italy, September 2008.
  • Kocyigit A., Gemikonakli, O., Ever, E. (2008), "Analytical Modelling of Large Scale Multi-server Systems with Deferred Repairs: A Reward Rate Approach", In IEEE Proceedings of 2nd UKSim European Symposium on Computer Modelling and Simulation (EMS2008). September 2008, Liverpool, U.K. pp:447-452.
  • Kocyigit A., Gemikonakli O., Ever, E. (2008), "Cost Reduction in High Power Computing Using a Deferred Repair Strategy: A Simulation Study'", In IEEE Proceedings of tenth International Conference on Computer Modeling and Simulation (uksim 2008). April 2008, Cambridge, U.K. pp. 354-359.
  • Chakka, R., Ever, E., Gemikonakli, O., (2007) "Joint-State Modelling for Open Queuing Networks with Breakdowns, Repairs and Finite Buffers", In IEEE Proceedings of MASCOTs 07, Bogazici University Istanbul. 24-26 October.
  • Gemikonakli, O., Mapp, G., Ever, E. and Thakker, D. (2007) "Modelling Network Memory Servers with Parallel Processors, Break-downs and Repairs", In IEEE Proceedings of 40thAnnual Simulation Symposium, (ANSS'07).pp:11-20.
  • Gemikonakli O, Sanei, H. and Ever, E. (2007), "Approximate Solution for the Performability of Markovian Queuing Networks with a Large Number of Servers". Proceedings of the 5th International Workshop on Signal Processing for Wireless Communication SPWC 2007, King 's College London, 6-8 June.
  • Ever, E., Gemikonakli, O., Chakka, R., (2006), "Performability Analysis of Highly Available Clusters with Break-downs and Deferred Repairs", In Proceedings of Fourth International Working Conference on Performance Modelling and Evaluation of Heterogeneous Networks, (HET-NETs '06), Ilkley, UK, September 2006, pp. P05/1-P05/9.
  • Ever, E. and Gemikonakli, O., (2006), "Mathematical Modelling for Performability Analysis of Homogeneous Multi-server Systems with Deferred Repairs", European Modelling Symposium 2006, London, September 2006, ISBN = 0-9516509-3-9/978-0-9516509-3-6, pp. 84-88
  • Chakka, R., Ever, E., Gemikonakli, O., (2006) "Modelling Open Networks with Breakdowns, Repairs and Finite Buffers, Using an IPP Departure Process Model", Proceedings of the 10th WSEAS Int. Conf. on Computers, Athens, Greece, July 2006, pp. 33-38
  • Ever, E., Gemikonakli, O., Chakka, R., (2006), "A Mathematical Model for Highly Available Clusters with One Head and Several Identical Computing Nodes". In Proceedings of the 9th International Conference on Computer Modelling and Simulation (UKSim 2006), pp.32-37
  • Ever, E., Gemikonakli, O., Chakka, R., (2006), "A Mathematical Model for Performability of Beowulf Clusters", In IEEE Proceedings of 39th Annual Symposium on Network Simulation, Huntsville, U.S.A, pp.118-126.
  • Gemikonakli, O., Mapp, G., Thakker, D., Ever, E., (2006) "Modelling and Performability Analysis of Network Memory Servers", In IEEE Proceedings of 39th Annual Symposium on Network Simulation, Huntsville, U.S.A, pp.127-134
  • Ever, E., Gemikonakli, O., Chakka, R., and Do., T. V., (2005), "A Mathematical Model for Performability Evaluation of Heterogeneous Multiprocessor Systems with Reconfiguration and Rebooting delays", In Proceedings of ESM 2005, Porto, Portugal, October 2005
  • Gemikonakli, O., Van Do, T., Chakka, R., and Ever, E. (2005), "Numerical Solution to the Performability of a Multiprocessor System with Reconfiguration and Rebooting Delays", European Simulation and Modelling Multiconference, June 2005, pp. 766-770.
  • Ever, E., Gemikonakli, O., Chakka R., and Do, T.V. (2005), "The Use of Markov Modulated Poisson Process (MMPP) in Open Queuing Systems with Breakdowns and Repairs", In Proceedings of PREP 2005, (Lancaster).

Papers with MSc Students Supervised:

  • Krishna Chaitanya. D, Ghosh.A, E.Ever (2011), “Analysis of Denial of Service attacks on Wireless Sensor Networks using Simulation ”, In Kaspersky Lab IT Security Conference for the Next Generation, Erfurt, Germany 27-30 January.
  • Ghosh A., A. Lasebae, E. Ever (2009),“Performance Evaluation of Wireless IEEE 802.11(b) used for Ad-Hoc Networks in an ELearning Classroom Network”, In Kaspersky Lab IT Security Conference for the Next Generation, 2009.
  • CCM4310-Network Design, Modelling and Simulation (Module Leader)
  • CCM1412-Fundamentals of Computing (Module Leader)
  • Computer networks, communication systems
  • Network design
  • Performance evaluation
  • Risk and reliability evaluation
  • Wireless communication systems.
  • Object oriented programming
  • Computer architecture
  • Logic Design
  • Computer architecture
  • Operations research
  • Systems simulation
  • Computer Networks
  • Development of performability models for wireless communication systems
  • Vehicular Ad-Hoc Network (VANET)
  • Wireless Sensor Network (WSN)
  • Performance, Availability / Reliability and Performability modelling
  • Integrated circuits, FPGAs and CPLDs