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Browsing Ruhuna International Science and Technology Conference by Author

Browsing Ruhuna International Science and Technology Conference by Author "Abeyratne, M.K."

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An application of nonparametric Kernel Density Estimators in Colombo stock market indices

Wijayasiri, M.P.A.; Abeyratne, M.K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2015-01-22)

The Colombo Stock Exchange (CSE) is the major financial trading agency in Sri Lanka. All Share Price Index (ASPI) and Standard & Poor Sri Lanka 20 (S&P SL 20) are main indices of CSE. The estimation of the density distributions ...
An Application of Wavelet Based Density Estimation in S&P SL20 Index of Colombo Stock Exchange (CSE)

Ratwatte, A.M.; Abeyratne, M.K.; Geeganage, S.D.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2021-02-17)

This study focuses on applications of wavelet based methods in estimating probability density functions (PDF) for returns and log returns of a daily recorded data set of S&P SL20 index of Colombo Stock Exchange (CSE). The ...
Investigation of efficiency of the higher-level multigrid methods for solving a large system of linear equations which arises from discretizing numerical schemes of 1D Poisson equation

Shareem, M.S.S.; Abeyratne, M.K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2022-01-19)

Multigrid Methods (MG) are extremely effective numerical techniques in solving a large system of linear equations associated with boundary value problems in various fields such as engineering, physics, and medicine etc. ...
A study on parameter estimation in modelling using a model independent program – PEST

Jayantha, P. A.; Abeyratne, M.K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2015-01-22)

The parameter estimation in mathematical models according to the observations requires a considerable effort as those parameters are used for the verification of the suitability of the models in many fields. Some of such ...
Traffic volume pattern and its correlation to traffic noise in Matara city

Amarasingha, N.D.; Darshana, I.; Abeyratne, M.K.; Bodhika, J.A.P.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-03-15)

Traffic congestion is becoming a serious problem in main cities in Sri Lanka and is rapidly increasing. Hourly traffic volume pattern and noise levels close to Matara Post Office on the Matara – Tangalle road are surveyed ...
Traffic volume pattern and its correlation to traffic noise in Matara city

Amarasingha, N.D.; Darshana, I.; Abeyratne, M.K.; Bodhika, J.A.P.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)

Traffic congestion is becoming a serious problem in main cities in Sri Lanka and is rapidly increasing. Hourly traffic volume pattern and noise levels close to Matara Post Office on the Matara – Tangalle road are surveyed ...
A two-dimensional numerical study on the development of two-phase flow inside a vertical solar collector pipe imposed by a homogeneous heat flux

Ranatunga, E.M.; Hettiarachchi, N.K.; Abeyratne, M.K.; Fernando, M. C. S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2021-02-17)

Direct solar heating systems have become a renewable energy solution for manufacturing processes. However, research on the use of parabolic trough reflectors in producing distilled water is relatively rare. In such ...

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