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Stability Properties and Hopf Bifurcation of a Delayed HIV Dynamics Model

Selected List of Journal Papers
Rathnayaka NS ,Wijerathna J.K and Pradeep B.G.S.A.
Int. J. Anal. Appl. (2025), 23:0
Publication year: 2025

• Financial Risk Management -Quantitative Approach. St Risk Management & Credit Control Department staff of People’s Bank.

Selected List of Invited Talks
Publication year: 2025

DEVELOPMENT OF A SMALL-SCALE REVERBERATION CHAMBER AND VALIDATION OF THE DIFFUSE FIELD

Selected List of Conference Papers
J. W. A. Madushika1*, J. K. Wijerathne2, W. D. G. Lanarolle1
Proceedings of the 11th YSF Symposium - 2023 187-202
Publication year: 2023

Term Structure Model for Sri Lankan Bond Market

Selected List of Journal Papers
Loranie Dehoedt1, J.K.Wijerathna1 1 Department of Mathematics, University of Colombo * Email lorrainedehoedt@gmail.com
J.Innovation Sciences and Sustainable Technologies, 2(1)(2022), 11- 16.
Publication year: 2022

STABILITY OF A DELAYED HIV-1 DYNAMICS MODEL WITH BEDDINGTON-DEANGELIS FUNCTIONAL RESPONSE AND ABSORPTION EFFECT WITH TWO DELAYS

Selected List of Journal Papers
N.S. RATHNAYAKA;, J.K. WIJERATHNA, B.G.S.A. PRADEEP3, P.D.N. SILVA
Available online at http://scik.org Commun. Math. Biol. Neurosci. 2022, 2022:105 https://doi.org/10.28919/cmbn/7702 ISSN: 2052-2541
Publication year: 2022

Mathematical Modelling and Simulation of Acoustic Properties of Knitted Fabrics Backed by an Air cavity

Selected List of Conference Abstracts
Madushika JWA, Wijerathne JK and Lanarolle WDG
Proceedings of the postgraduate congress, Sri Lanka-2021, pp153.
Publication year: 2021

Numerical Investigation of Heat Flow and Fluid Flow in a Solar Water Heater with an Evacuated-Tube Collector.Book chapter

Book Chapters
K. D. N. Kumari and J. K. Wijerathna
Publication year: 2020

Chapter 5 of the book “Mathematical Methods in
Engineering and Applied Sciences”
Edited by Hemen Dutta,CRC press, Taylor & Francis group (ISBN-13: 978-0-367-35977-5 (Hardback)

Implementation and validation of a closed form formula for implied volatility

Selected List of Journal Papers
B.G.C.Keshan and J.K.Wijerathna
Indian journal of Science and Technology, Volume 13, Issue 38, Pages 4064-4072
Publication year: 2020

Indian Journal of Science and Technology 13(38)pp4064-4072

Simulation of Convection Flow and Sensitivity Analysis of Model Parameters of Evacuated Glass,Journal of energy reviews Tube Solar Water Heater.

Selected List of Journal Papers
K. D. N. Kumari and J. K. Wijerathna
Publication year: 2018

Journal of Energy Research Reviews, Vol(1), Issue 3,1-14,2018.

Adaptation to space mitigation guidelines and space law

Selected List of Journal Papers
CR Rajapaksa and JK.Wijerathna,
Vol 15(1)pp65-76
Publication year: 2017

Adaptation to space mitigation guidelines and space law, Astropolitics, Vol 15(1)pp65-76(2017).

“Sensitivity of Tube Inclination Angle on Thermal Performance of Water-In-Glass Evacuated Tube Solar Water Heater”

Selected List of Conference Papers
Kumari KDN. and Wijerathna JK.,
Publication year: 2017

Sensitivity of Tube Inclination Angle on Thermal Performance of Water-In-Glass Evacuated Tube Solar Water Heater” International Conference on Computational Modeling & Simulation (ICCMS-2017), University of Colombo. (Accepted February, 2017)

Numerical simulation of heat flow of a circular tube with a hemispherical cup at the bottom in an evacuated solar collector

Selected List of Conference Abstracts
K. D. N. Kumari and J. K. Wijerathna
Annual Research Symposium 2016, University of Colombo, Sri Lanka, pp 276
Publication year: 2016

Implementation of Space debris removal strategies.

Selected List of Conference Abstracts
Rajapaksa CR, Wijerathna JK
. International conference on Applications of Mathematics to Non-linear Science (AMNS-2016) Kathmandu, Nepal p29
Publication year: 2016

“Sensitivity of Acute Angle to the Heat Transfer Process of a Circular Tube with a Hemispherical Cup at the bottom of an Evacuated Solar Collector”

Selected List of Conference Papers
Kumari K.D.N. and Wijerathna JK,
Publication year: 2016

Sensitivity of Acute Angle to the Heat Transfer Process of a Circular Tube with a Hemispherical Cup at the bottom of an Evacuated Solar Collector” Symposium On Statistical & Computational Modelling With Applications,, University of Kelaniya(2016).

“Numerical simulation of heat flow of a circular tube with a hemispherical cup at the bottom in a evacuated solar collector”

Selected List of Conference Papers
Kumari K.D.N. and Wijerathna JK.,
Publication year: 2016

Numerical simulation of heat flow of a circular tube with a hemispherical cup at the bottom in a evacuated solar collector” Annual Research Symposium, University of Colombo, Sri Lanka(2016)

Some counter–intuitive remarks on quantum vertex–partitioning scheme applied to identity graphs

Selected List of Conference Papers
Mahasinghe, A., Wang, J.B. and Wijerathna, JK.,
Publication year: 2015

Some counter–intuitive remarks on quantum vertex–partitioning scheme applied to identity graphs, In Abstracts of International Conference on Quantum Foundations, Patna(2015)

Some counter-intuitive remarks on quantum vertex-partitioning scheme applied to identity graphs.

Selected List of Conference Abstracts
Mahasinghe A, and Wang, J., and Wijerathna J
Proceedings of Quantum Foundations, Patna, India, p. 32
Publication year: 2015

Phase–modified CTQW unable to distinguish strongly regular graphs efficiently

Selected List of Journal Papers
Mahasinghe, A., Izaac, J., Wang, JB. and Wijerathna, JK.,
Journal of Physics A: Mathematical and Theoretical, 48 (26), p. 265301
Publication year: 2015

Phase–modified CTQW unable to distinguish strongly regular graphs efficiently, Journal of Physics A: Mathematical and Theoretical, 48 (26), p. 265301(2015).

Modification of information gain measure to select the best group of attributes in a data set for binary decision tree inducer

Selected List of Conference Papers
NS Ratnayaka and JK Wijerathna,
Publication year: 2015

Modification of information gain measure to select the best group of attributes in a data set for binary decision tree inducer, Proceedings of Research symposium Uva Wellassa University,(2015).

Space Debris Removal Strategies and their Feasibility

Selected List of Journal Papers
CR Rajapaksa,JK Wijerathna,
ndian journal of Science and Technology Vol(7)7,pp991-1004
Publication year: 2014

Space Debris Removal Strategies and their Feasibility, Indian journal of Science and Technology Vol(7)7,pp991-1004,(2014)

Slow platelet recovery pattern during the 2011 dengue outbreak: a Preliminary report

Selected List of Journal Papers
L Gooneratne, M Wimalachandra, J Wijerathna, N Karunathunga, S Jayasinghe,
Ceylon Medical Journal, Vol 59, No 2 PP61-63
Publication year: 2014

Slow platelet recovery pattern during the 2011 dengue outbreak: a Preliminary report, Ceylon Medical Journal, Vol 59, No 2 PP61-63(2014).

Quantum walk–based search and symmetries in graphs

Selected List of Journal Papers
Mahasinghe, A., Wang, J.B. and Wijerathna, JK.
Journal of Physics 47(50), p.505301
Publication year: 2014

Quantum walk–based search and symmetries in graphs. Journal of Physics A: Mathematical and Theoretical, 47(50), p.505301(2014).

Numerical Simulation of Heat Flow of a Circular Tube in a Solar Collector Which is placed with an Acute-angle θ to the Horizontal

Selected List of Conference Abstracts
K. D. N. Kumari and J. K. Wijerathna
Publication year: 2014

Keynote Address: Role of Mathematics and Statistics in Industry and Financial Sector at the study group meeting on Mathematics and Statistics for Industry (SGMMSI-2014), organized by the Department of Mathematics, University of Ruhuna.

Selected List of Invited Talks
Publication year: 2014

) Numerical study of natural convection of heat flow on water through a circular pipe

Selected List of Conference Abstracts
K. D. N. Kumari and J. K. Wijerathna
Proceeding of HETC Symposium, Colombo, pp. 128
Publication year: 2014

“Numerical study of natural convection of heat flow on water through a circular pipe”

Selected List of Conference Papers
Kumari KDN. and Wijerathna JK.,
pp. 128
Publication year: 2014

Numerical study of natural convection of heat flow on water through a circular pipe” proceeding of HETC Symposium, Colombo, pp. 128 (2014).

“Numerical Simulation of Heat Flow of a Circular Tube in a Solar Collector Which is placed with an Acute-angle θ to the Horizontal”

Selected List of Journal Papers
Kumari KDN. and Wijerathna JK.,
Publication year: 2014

“Effect of the angle of the heat flux to the tube and effect of the acute-angle of the tube to horizontal on heat transferring process in solar collectors”

Selected List of Conference Papers
Kumari KDN. and Wijerathna JK
Publication year: 2014

Effect of the angle of the heat flux to the tube and effect of the acute-angle of the tube to horizontal on heat transferring process in solar collectors” 11th Annual Research Session, Eastern University, Sri Lanka(2014).

Two mathematical recreations from Sri Lankan indigenous knowledge

Selected List of Conference Papers
Anuradha Mahasinghe, J.Wijerathna, Jayantha Suranimalee ,
Publication year: 2013

Two mathematical recreations from Sri Lankan indigenous knowledge , Proceedings of the Annual Research Symposium, University of Colombo, October 3-4, (2013).

Two mathematical recreations from Sri Lankan indigenous knowledge

Selected List of Conference Abstracts
Mahasinghe, A.C., Wijerathna JK and Suranimalee, J
Proceedings of the Annual Research Symposium of University of Colombo, Colombo, Sri Lanka, p. 154.
Publication year: 2013