“We investigated a mathematical model on timing of enhancing testing capacity of COVID-19 as a part of an MPhil research carried out by Ms. Uma Meththananda, registered in the Faculty of Graduate Studies”, said , Senior Lecturer at Department of Mathematics, 91´ĢÃŊ. Prof. S.S.N. Perera, Ms. K.K.W.H. Erandi, Dr. Y. Jayathunga (University of Colombo) and Dr. H.O.W. Peiris (Open University of 91´ĢÃŊ) also contributed to this investigation.

This modelling work was tested for early stage of COVID-19 transmission in 91´ĢÃŊ and it can be extended to any time frame subject the availability of data to enumerate parameters. In one numerical experiment, it was observed that frequency of enhancing testing capacity started decreasing after several increments, indicating economically favourable direction amidst effort constraints. Initially, operating intervals due to enhanced testing capacity were observed as 27, 15 and 8 days that further declined to 5 days, then it gradually started increasing upon the effort-to-demand ratio set via number of tests as a logistic measure and recovered portion as an epidemiological measure.

In this research, timing of enhancing testing capacity was modelled as an optimal problem, where the enhancement was quantified via number of tests as an instant measure and recovered portion as a long-term measure. The model was structured analogous to an optimal machine replacement model based on a nonlinear integral equation. Scenario development criteria on demand and effort for enhancing testing capacity were introduced for predictions.

Publication details: R.G.U.I. Meththananda, N.C. Ganegoda, S.S.N. Perera, K.K.W.H. Erandi, Y. Jayathunga and H.O.W. Peiris,Ėũ,ĖũJournal of Process Control, Vol. 105, pp. 204-213, 2021

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1. Fill the application online and submit.
2. Pay the application fee of Rs. 1,000/- to account number 053010005659 from any People’s Bank branch.
   OR Pay online via Visa or MasterCard in LKR.
3. After you have made the payment of application fee, upload the following documents to process your application. OR Handover to the Faculty of Graduate Studies.
   • Color photograph (Passport size – sky blue background in PNG or JPG format)
   • Birth certificate (in PDF format)
   • Certified copies of the certificates of Academic / Professional qualification (in PDF format)
   • Letter of Release from employer (only for full-time students who are currently employed) – (in PDF format)
   • Bank payment receipt (in PDF format) – not applicable for Visa or MasterCard payments
   • Documents that certify relevant work experience. (in PDF format)

Closing date of applications: 29^th September 2017 (Extended)

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The post āļšāˇāļģāˇŠāļ¸āˇ’āļš āļœāļĢāˇ’āļ­ āļ´āˇ’āļŊāˇ’āļļāļŗ āļ¯āļģāˇŠāˇāļąāļ´āļ­āˇ’ / āļ´āˇāˇŠāļ āˇāļ­āˇŠ āļ‹āļ´āˇāļ°āˇ’ āļŠāˇ’āļ´āˇŠāļŊāˇāļ¸āˇāˇ€ appeared first on USJ - 91´ĢÃŊ.

Video lessons on GCE A/L new syllabuses are now available for free at . National Institute of Education and Ministry of Education are going to implement new syllabuses from 2017 for 2019 A/L students.

These video lessons were conducted by University Professors and Lecturers of University of Sri Jayewardeepura and University of Colombo. Videos were produced by Japura Media, official media team of 91´ĢÃŊ.

You can watch Videos lessons and download pdf files here:

• by Mr.Kapila Silva
• by Prof Hiran Amarasekera
• by Prof S D Rosa
• by Prof. Sudantha Liyanage

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