成人头条

Late Prof. H.Y.R. Perera

ranjith_0
  • Faculty of Engineering
  • Department of Electrical Engineering
  • Professor Emeritus

Research Activities

Key Research Areas
Queuing Theory
Stochastic simulation
Rural Electrification
Traffic modeling & Performance Evaluation

Education and Training

Education
BSc Eng(S.Lanka), Dip.Ing(Aachen), Dr.Ing(Aachen), CEng, MIE(Sri Lanka)

Publications*

Publications
  1. Ranjit Perera, "The Variance of Delay Time in Queuing System M/G/1 with Optimal Strategy SRPT", AE脺, Vol. 47 (1993), pp 110-114.
  2. Ranjit Perera, Friedrich Schreiber,听 "Distribution function and local correlation of the delay time in queuing system M/G/1-SRPT", AE脺, Vol. 47 (1993), pp 108-110.
  3. JR Lucas, HYR Perera, PDC Wijayatunga, DC Wijeratne, T Siyambalapitiya, TAK Jayasekera, "Energy efficient lighting for households: A Survey". SLEMA Journal, Sri Lanka Energy Managers Association, Sri Lanka, Vol. 6 (1995), pp 1-9.
  4. HYR Perera听"Impact of Electrification on Quality of Rural life", Transactions of the IEE Sri Lanka Centre, Volume 1 #1(1996), pp 10-17.
  5. HYR Perera, "Rural Electrification Policy", OUR Engineering Technology, Open University of Sri Lanka, Volume 3 #1, March 1997, pp 58-61.
  6. HYR Perera, C G枚rg, F Schreiber, "Higher Order Local Correlation Coefficients of Occupancy in the Queues M/M/1 and M/M/1/N听", AE脺, Vol. 52 (1998).
  7. HYR Perera, "Peak shaving through multi-mode operation of household refrigerators", SLEMA Journal, Sri Lanka Energy Managers Association, Vol. 7 (1998).
  8. HYR Perera, CVK Periyapperuma, UKDLP Udawatta, , "Technical Standards for Low Cost Distribution of Electricity in Village Hydro Schemes鈥,听听Transactions of the IEE Sri Lanka Centre, Volume 3 #1 January 2001, pp 29-35.
  9. Luis M. Coreia, Erik R. Fledderus, Ellen Meijerink,听 Ranjit Perera, Antonio Serrador, Ulrich T疟rke, Miranda J. G. van Uitert, Thomas Winter,听听"Identification of relevant parameters for traffic modeling and interference estimation"听published in听听 by听 Information Society Technologies (IST), The European Commission, 2001.
  10. Ranjit Perera, Eugen Lamers, Carmelita G枚rg, , "Optimum Number of Restarts in Multi-Threshold RESTART Simulations鈥,听听Proceedings of Fourth International Workshop on Rare Event Simulation and related Combinatorial Optimization Problems RESIM/COP鈥02,听 11-12 April 2002, Madrid Spain.
  11. Ranjit Perera. Andreas Eisenbl盲tter, Erik Fledderus, Carmelita G枚rg, Michael Schutzow, Stefan Vervijmeren,听鈥Pixel Oriented Mobility Modelling for UMTS Network Simulations鈥,听 Proceedings of IST Mobile and Wireless Tele-communications Summit 2002, 17-19 June 2002, Thessaloniki, Greece, pp 828-831.
  12. Ulrich T疟rke, Thomas Winter, Ranjit Perera, Eugen Lamers, Ellen Meijerink, Erik R. Fledderus,听听 Antonio Serrador,听听"Comparison of different simulation approaches for cell performance evaluation"听published in听听 by Information Society Technologies (IST), The European Commission, 2002.
  13. Ulrich T眉rke, Ranjit Perera, Eugen Lamers, Thomas Winter, Carmelita G枚rg,听听鈥An Advanced Approach for QoS Analysis in UMTS Radio Network Simulations鈥,听 Proceedings of ITC18, Berlin Germany, September 2003, pp 91-100.
  14. Eugen Lamers, Ranjit Perera, Ulrich T眉rke, Carmelita G枚rg,听鈥Short Term Dynamic System Level Simulation Concepts for UMTS Network Planning鈥, Proceedings of ITC18, Berlin Germany, September 2003 pp 101-110.
  15. DGAK Wijeratna, JR Lucas, J Pieris, HYR Perera, "Development听of a software package for calculating current rating of medium voltage power cables鈥,听听Transactions of the IEE Sri Lanka Centre, Volume 5 #1 September 2003, pp 50-57.
  16. Ulrich T疟rke, Thomas Winter, Eugen Lamers, Ranjit Perera,听 "Simulation Scenarios Including Quality of Service Aspects" published in听听by Information Society Technologies (IST), The European Commission, 2003.
  17. Ulrich T疟rke, Thomas Winter,听 Eugen Lamers, Ranjit Perera, Lucio Ferreira,听"Evaluation of the Influence of User Mobility on Average Traffic Load" published in听听Information Society Technologies (IST), The European Commission, 2003.
  18. Thomas Winter, Ulrich T疟rke, Eugen Lamers, Ranjit Perera, Antonio Serrafdor, Luis M. Correia "Advanced simulation approach for integrated static and short-term dynamic UMTS performance evaluation" published in听听by Information Society Technologies (IST), The European Commission, 2003.
  19. Ranjit Perera, Eugen Lamers, Carmelita G枚rg , Ulrich T疟rke, Thomas Winter, 鈥Analysis of Soft-Handover Characteristics in Realistic Urban UMTS Radio Networks鈥, 59th IEEE Vehicular Technology Conference, May 2004-Spring, Milan. Italy, Vol. 4, pp. 2317-2321 Vol.4
  20. Ulrich T疟rke, Ranjit Perera, Eugen Lamers, Thomas Winter, Carmelita G枚rg, 鈥An integrated Simulation Approach for Static and Dynamic UMTS Radio Network Performance Evaluation鈥,听Proceedings of the 1st Regional Conference ICT and E-Paradigms. June 2004, Colombo, Sri Lanka, pp 25-30.
  21. NNR Mendis, EMMB Yatiyana, Wijesinghe K, JR Lucas, Ranjit Perera, 鈥Design and Construction of Constant Voltage Transformer鈥, ICIIS 2006, First International Conference on Industrial and Information Systems, 8 -11 August 2006, Peradeniya, Sri Lanka, pp. 40-45.
  22. Kusum Shanthi, Ranjit Perera, Sarath Perera, 鈥Benchmarking the Sri Lankan Power System by a Power Quality Monitoring Program鈥, ICIIS 2006, First International Conference on Industrial and Information Systems, 8 -11 August 2006, Peradeniya, Sri Lanka, pp 211-216.
  23. Kusum Shanthi, Ranjit Perera, Sarath Perera, 鈥Utility Power Tapping Point for the Commercial Buildings will be a key factor during site selection鈥, BETNET 2006, 2nd IET International conference on building Electrical Technology, Kuala Lumpur, Malaysia 31st Oct. 鈥 2nd Nov. 2006. 6 pages (CD-ROM).
  24. Thusara Weerawardane, Ranjit Perera, Andreas Timm-Giel, Carmelita G枚rg, 鈥A Markovian Model for HSDPA TNL Congestion Control Performance Analysis鈥,68th IEEE Vehicular Technology Conference, 2008-September (Fall), Calgory, Canada. pp. 1-6.
  25. Ranjit Perera, 鈥New legislation, new challenges & new trends in Sri Lankan Electricity sector鈥, Proceedings of the 10th Regulators & Policymakers retreat, July 23-27, 2009, Goa, India, pp 227-232.
  26. A S Indatissa, H Y R Perera, T Siyambalapitiya, 鈥Economics of reaching year 2015 non-conventional renewable electricity generation objectives of Sri Lanka鈥, Publication of papers presented at the International Conference on 鈥楥limate on the edge鈥, Moumt Lavinia, Sri Lanka, November 26-27, 2010, pp 25-32
  27. M. Chanaka, Kusum Shanthi, Ranjit Perera, 鈥Modelling of power transmission lines for lighting back flashover analysis(A case study: 220kV Biyagama-Kotmale transmission line)鈥, ICIIS 2011, 6th IEEE International Conference on Industrial and Information Systems, 2011, pp. 40-45
  28. Thusara Weerawardane, Ranjit Perera, Carmelita G枚rg, 鈥溙A markov model for HSDPA TNL Flow Control and Congestion Control Performance Analysis鈥,73rd IEEE Vehicular Technology Conference, 2011-May (Spring), Budapest, Hungry. pp. 1-6.
  29. Ranjit Perera,听鈥淢ean Value Formulae for the Queues M/G/1-SPT & M/G/1-SRPT: A New Method of Derivation Using Differential Equations鈥, Silhouette, Journal of the Sir John Kotelawala Defence University -2011.
  30. Thusara Weerawardane, Ranjit Perera, Carmelita G枚rg, 鈥Impact of Machine to Machine (M2M) Communication on Disaster Management in Future Mobile Networks鈥滻nternationalSymposium鈥 2012, Kotelawala Defence University, August 2012, pp 378-393.
  31. KKYW Perera, Ranjit Perera, Jayasirl Krunanayaka, Raja Amarathunga, 鈥Development and Utilization of Power & Energy: A Brief Overview鈥 Book published under the centenary commemoration publications of IESL, 2012, 89 pages.
  32. Ranjit Perera, SP Thusara,鈥Distribution reliability improvement through optimal load break switches in 33kV network鈥, Proceedings of KDU Symposium 2013, 22-23 August 2013, Ratmalana, pp 269-272.
  33. Ranjit Perera, G T F De Silva, S Bogahawatta,鈥Hydro Power from Existing Reservoirs鈥, Proceedings of KDU International Research Conference 2014, 21-22 August 2014, Ratmalana, 7 pages.
  34. Ranjit Perera, KMIN Kuruppu, 鈥Optimizing Energy Output at Canyon Hydro Power Station: A Case Study鈥, Proceedings of KDU International Research Conference 2014, 21-22 August 2014, Ratmalana, 6 pages.

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