I am a Senior Lecturer attached to the Department of Mathematics and Computer Science. I graduated from the University of Colombo, specialising in the area of Mathematics and completed postgraduate studies in the area of Statistics at the Simon Fraser University, Canada.
My research interests are mainly in the areas of goodness of fit techniques in Statistics and population estimation.
Areas of Specialization:
Goodness of FIt, Population Estimation
Presidential Research Award – 2007
Commonwealth Academic Fellowship (January 2007 to July 2007)
Visiting Academic Fellowship (from Nov 10, 2003 to Dec 9, 2003), Open University of Hong Kong, Hong Kong
Visiting Academic Fellowship (from Jan 2001 to April 2001), Simon Fraser University, Canada
British Government Technical Cooperation Training Award (from Nov 11, 1998 to December 22, 1998)
Canadian Commonwealth Scholarship (August 1990 to August 1995)
Research Assistantship, Simon Fraser University, Canada ( from 1991 to 1995)
Simon Fraser University President’s Research Stipend (based on merit), 1994
Simon Fraser University Graduate Fellowship (based on merit), 1993
Navaratna W.C.W. and De Silva M.A.P (2013) A study of the effectiveness of continuous assessment as a learning tool. Proceedings of the Annual OUSL Academic Sessions – 2013.
Navaratna W. C. W., Victor J. Del Rio Vilas and Dankmar BÖhning (2008) Extending Zelterman’s Approach for Robust Estimation of Population Size to Zero-truncated Clustered Data, Biometrical Journal, Volume 50, Issue 04, 584 – 596
Navaratna W. C. W., and Dankmar BÖhning (2007) Robust Estimation of Population Size based on Zero-truncated Clustered Data. Poster presentation for the Conference on Recent Developments in Capture Recapture Methods and their Applications, School of Biological Sciences, University of Reading, UK.
Senaratna, L.K., Tantrigoda, R.U., Edirisinghe, E.A.D.N.D., Perera, W.C.W. and Karthikeyan, N. (2007) A study of the effectiveness of orientation sessions for students in the B.Sc. Degree Programme at the OUSL. Proceedings of the Annual OUSL Academic Sessions – 2007.
Senaratna, L.K., Karthikeyan, N., Tantrigoda, R.U., Edirisinghe, E.A.D.N.D. and Perera, W.C.W. (2007) A study on personal counselling of students in the B.Sc. Degree Programme at the OUSL. Proceedings of the Annual OUSL Academic Sessions – 2007.
Lockhart R. A. and Perera, W. C. W. (2006) Testing normality in Designs with many parameters, Technometrics, Volume 48, No. 03, pp 436 – 444
Perera, W. N. N. K, Perera W. C. W. and Samarakkody, R. (2002). Colombo air pollution from a statistical point of view, in proceedings of the 58th Annual Sessions, Sri Lanka Association of the Advancement of Science (SLASS), Dec 2, 2002 – Dec 07, 2002.
Perera, W. C. W, Weerakoon, S., Banneheka, B. M. S. G. and Angammana, U. (2000). A mathematical model for population growth, birth and death rates of Sri Lanka, in proceedings of the 56th Annual Sessions, Sri Lanka Association of the Advancement of Science (SLASS), pp 192, Nov 27, 2001 – Dec 01, 2001
Perera, W. C. W. (1996) Statisitcal Anaylsis of Thermoluminescence experiments for sedimentary dating, Unpublished Ph. D. Thesis, Simon Fraser University, Canada.
Perera, W. C. W (1992) Estimation and Testing Goodness of Fit for mixtures of two parameter Weibull distributions, Unpublished M. Sc. Thesis, Simon Fraser University, Canada.
Statistical study of thyroid cancer status in Sri Lanka
Koneswaran, K. (2001) National oral health status and association among related social and behavioural factors, M. Sc. Thesis, University of Colombo, Sri Lanka
Fernando, K. A. S. N. (Sep, 2000) A study on the performance of statistical techniques applicable for ordinal data, M. Sc. Thesis, University of Colombo, Sri Lanka
Angammana, U. (May, 2000) A mathematicalmodel for population growth, birth and death rates of Sri Lanka, M. Sc. Thesis, University of Sri Jayawardanapura, Sri Lanka
Muniratne, W. D. K. J. (1999) A statistical tool for the lending banker, M. Sc. Thesis, University of Colombo, Sri Lanka
Course Material Authored for the B. Sc. Degree Programme offered by the Open University of Sri Lanka