{"id":636,"date":"2020-09-30T15:30:36","date_gmt":"2020-09-30T10:00:36","guid":{"rendered":"http:\/\/maths.jfn.ac.lk\/?page_id=636"},"modified":"2023-10-05T09:54:04","modified_gmt":"2023-10-05T04:24:04","slug":"mr-n-varathan","status":"publish","type":"page","link":"https:\/\/maths.jfn.ac.lk\/index.php\/mr-n-varathan\/","title":{"rendered":"Dr.N. Varathan"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"636\" class=\"elementor elementor-636\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e6e727c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e6e727c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-5cd92a4\" data-id=\"5cd92a4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fca2957 elementor-widget elementor-widget-image\" data-id=\"fca2957\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/maths.jfn.ac.lk\/wp-content\/uploads\/elementor\/thumbs\/varathan-Sir-pu8yw3olck4v7mi7vcpn1t8ru2h6ldhiuomwicz50o.png\" title=\"varathan Sir\" alt=\"varathan Sir\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d037b6 elementor-widget elementor-widget-text-editor\" data-id=\"4d037b6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><b style=\"font-size: 16px; color: var( --e-global-color-text );\"><span style=\"font-size: 13.5pt; font-family: 'Bookman Old Style','serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';\">Dr.N.Varathan<\/span><\/b><\/p>\n<p class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; text-align: center; line-height: normal;\" align=\"center\"><span style=\"font-size: 12.0pt; font-family: 'Bookman Old Style','serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman';\">B.Sc. [Hons] (Jaffna), M.Sc (Canada), M.Sc (Pera), Ph.D(Pera).<\/span><\/p>\n<p style=\"text-align: center;\"><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cf16e63 elementor-align-center elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"cf16e63\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Senior Lecturer in Statistics<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-envelope\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">varathan@univ.jfn.ac.lk <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/scholar.google.com\/citations?user=TWq77FMAAAAJ&#038;hl=en\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-phone-alt\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">0779352990<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5567946 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"5567946\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-xs\" href=\"https:\/\/scholar.google.com\/citations?user=TWq77FMAAAAJ&#038;hl=en\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fab fa-google\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Google Scholar<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-1f7b494\" data-id=\"1f7b494\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2015de9 elementor-widget elementor-widget-accordion\" data-id=\"2015de9\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3361\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-3361\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Academic Profile<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3361\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-3361\"><ul><li>Head, Department of Mathematics and Statistics, From September 2023<\/li><li>Ph.D in Statistics (University of Peradeniya, Sri Lanaka, 2020).<\/li>\n<li>M.Sc in Statistics (Memorial University, Canada, 2012).<\/li>\n<li>M.Sc in Statistics (University of Peradeniya, Sri Lanaka, 2010).<\/li>\n<li>B.Sc (Hons) in Statistics (University of Jaffna, Sri Lanka, 2005).<\/li>\n<\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3362\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-3362\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Admin Roles<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3362\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-3362\"><ul><li>Coordinator(Mathematics &amp; Statistics), Applied Science Degree Programme (Sep 2020 \u2013 to date), Faculty of Science.<\/li><li>Academic Counsellor (Sep 2020 \u2013 to date), Faculty of Science.<\/li><li>Student Counsellor (Mar 2020- Feb 2021), Faculty of Science.<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3363\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-3363\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Awards<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3363\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-3363\"><ul><li><strong><em>\u00a0<\/em><\/strong>\u201c<em>Prof. Kanagasabapathy Memorial Prize<\/em><em>\u201d<\/em> in Statistics for the best performance in the Honours Degree Examination in Science, University of Jaffna, 2003.<\/li><li><em>\u201c<\/em><em>University Prize<\/em><em>\u201d<\/em> for the best performance in the Second Examination in Science, University of Jaffna, 2001.<\/li><li><em>\u201c<\/em><em>Handy Perinpanayagam Memorial Prize<\/em><em>\u201d<\/em> for the best performance in the First and Second Examination in Science, University of Jaffna, 2000\/2001.<\/li><li><em>\u201c<\/em><em>Postgraduate Institute of Science Prize<\/em><em>\u201d<\/em> for the best performance in the M.Sc. Course work in Applied Statistics, University of Peradeniya, 2008\/2009.<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3364\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-3364\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Activities<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3364\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-3364\"><ul><li>Coordinator of Statistics subject, Department of Mathematics and Statistics, University of Jaffna, 2016 to 2018.<\/li><li>Member of Editorial board of \u201cVingnanam Journal of Science\u201d, University of Jaffna \u2013 2017 to date.<\/li><li>Member of the Science Faculty Research Committee (SFRC), University of Jaffna &#8211; 2017 to 2020.<\/li><li>Life member of the Jaffna Science Association, Jaffna, Sri Lanka.<\/li><li>Co-coodinator for Career Fair under HETC, faculty of Science, University of Jaffna, (2014).<\/li><li>Member of Editorial board of \u201c Vingnanam International Research Conference (VIRC2018)\u201d, Faculty of Science, University of Jaffna-2018.<\/li><li>Science Faculty Representative\u00a0 for HETC Project Monitoring committee, University of Jaffna (2014).<\/li><li>Visiting Lecturer for the Open University of Sri Lanka in 2016 and 2017.<\/li><li>Member of Science Faculty Career Guidance Cell, University of Jaffna &#8211; 2015 to 2018.<\/li><li>Chairman, Technical Evaluation Committee, QIG-Physical Science study programme, University of Jaffna (2014).<\/li><li>Secretary, Jaffna University Science Teachers\u2019 Association (JUSTA), University of Jaffna (2014).<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3365\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-3365\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Teaching<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3365\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-3365\"><p><strong>Undergraduate Teaching<\/strong><\/p><ul><li>STA303M3 \u2013 Categorical Data Analysis<\/li><li>STA404M3- Generalized Linear Models for Familial Longitudinal Data<\/li><li>STA408M3 \u2013 Theory of Linear models<\/li><li>STA201G3 \u2013 Statistical Theory<\/li><li>STA103G3 \u2013 Basic Statistical Inference<\/li><li>STA301G3 \u2013 Regression Analysis<\/li><\/ul><h3>Inter-faculty Teaching<\/h3><ul><li>Statistical Methods for Planning (APNC 22023), Faculty of Arts, University of Jaffna, (2015).<\/li><li>Pharmaceutical Mathematics (PHAMM 2101), Faculty of Allied Health Sciences, University of Jaffna, (2013).<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3366\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"button\" aria-controls=\"elementor-tab-content-3366\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Publications<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3366\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"region\" aria-labelledby=\"elementor-tab-title-3366\"><p><strong>2022.<\/strong><\/p><p><ul><li><span style=\"font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt; text-align: justify; color: var( --e-global-color-text );\">Varathan, N., (2022). An improved ridge type estimator for\nlogistic regression, <\/span><span style=\"font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt; text-align: justify; color: var( --e-global-color-text ); border-width: 1pt; border-style: none; border-color: windowtext; padding: 0in;\">Statistics in\nTransition. New Series<\/span><span style=\"font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt; text-align: justify; color: var( --e-global-color-text );\">, 3, 113-126.<\/span><\/li><li><span style=\"color: var( --e-global-color-text ); font-size: 16px; text-align: justify;\">Amarasinghe, R.K.R.K., Varathan, N. (2022). Time\nseries analysis of crime data of Anuradhapura district, Sri Lanka, Proceedings\nof the Postgraduate Institute of Science Research Congress, University of\nPeradeniya, October 28-30, pp.71.<\/span><\/li><li><span style=\"font-size: 16px; text-align: justify; color: var( --e-global-color-text );\">Rajakaruna, R.R.S.P., Varathan, N. (2022). Farmers\u2019\nLoyalty towards Paddy Cultivation in Anuradhapura District, Sri Lanka, Proceedings\nof the 5<\/span><sup style=\"text-align: justify; color: var( --e-global-color-text );\">th<\/sup><span style=\"font-size: 16px; text-align: justify; color: var( --e-global-color-text );\"> National Symposium on Agriculture. Eastern University of\nSri Lanka (5<\/span><sup style=\"text-align: justify; color: var( --e-global-color-text );\">th<\/sup><span style=\"font-size: 16px; text-align: justify; color: var( --e-global-color-text );\"> NSA 2022), March 30, pp.10.<\/span><\/li><li><span style=\"font-size: 16px; text-align: justify; color: var( --e-global-color-text );\">Wimalarathna, J.J.R., Varathan, N.\n(2022). Time series modelling of tourist arrivals to Sri Lanka: ARIMA approach,\nProceedings of the 6<\/span><sup style=\"text-align: justify; color: var( --e-global-color-text );\">th <\/sup><span style=\"font-size: 16px; text-align: justify; color: var( --e-global-color-text );\">International Research Conference of Uva\nWellassa University, IRCUWU 2022, July 28-29, pp.185.<\/span><\/li><\/ul><\/p><h3><ul>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p><\/p>\n<\/h3>\n\n\n<p><\/p>\n\n\n<p><\/p>\n\n<ul>\n<\/ul>\n<p><strong>2021<\/strong><\/p>\n<ul>\n<li>Varathan, N., Keshini, J.L. (2021). Identifying Risk Factors of Total Cholesterol Level of Patients in Kegalle District, Sri Lanka, 8th International Conference of Sabaragamuwa University of Sri Lanka 2021, p.p. 145.<\/li>\n<li>Varathan, N., Balasooriya, K.B.W.P., Statistical Analysis of the Impact of Macro-Economic Variables on Gross Domestic production in Sri Lanka, iPURSE 2021, p.p. 478.<\/li>\n<li>Varathan, N., Subasinghe, S.N.D.H., Statistical Analysis on Factors Influencing Child Injuries in Colombo, Sri Lanka, iPURSE 2021, p.p. 471.<\/li>\n<li>Mathangi, M.,Varathan, N., Pediction of Green Chilli production in Jaffna, Sri Lanka: ARIMA Approach, International Symposium on Agriculture &amp;amp; Environment 2021, p.p.86.<\/li>\n<\/ul>\n<p><strong>2020<\/strong><\/p>\n<ul>\n<li>Liyana Arachchi, L.A.D.D., Varathan, N., (2020). Statistical analysis on factors affecting income-inequality in Sri lankan labour force, <em>Proceedings of the 7<sup>th<\/sup> Ruhuna International Science &amp; Technology Conference, University of Ruhuna, January 22,<\/em>61.<\/li>\n<li>De Zoysa, W.D.W., Varathan, N., (2020). Time Series Modeling of blood in demand for Kurunegala district, Sri Lanka, <em>Proceedings of the International Research Conference of Uva Wellassa University, July 29-30,<\/em>195.<\/li>\n<\/ul>\n<p><strong>2019<\/strong><\/p>\n<ul>\n<li>Varathan, N., Wijekoon, P., (2019). Modified almost unbiased Liu estimator in logistic regression, <em>Communications in Statistics-Simulation and Computation,<\/em> DOI: 10.1080\/03610918.2019.1626888.<\/li>\n<li>Varathan, N., Wijekoon, P. Optimal stochastic restricted logistic estimator. <em>Stat Papers<\/em> <strong>62, <\/strong>985\u20131002 (2021). https:\/\/doi.org\/10.1007\/s00362-019-01121-y<\/li>\n<li>Varathan, N., Wijekoon, P., (2019). Mean square error comparison of Almost unbiased ridge estimator and Modified almost unbiased ridge estimator in logistic regression, <em>Proceedings of the PGIS Research Congress<\/em>, University of Peradeniya, pp.35.<\/li>\n<li>Kirisanth, S., Varathan, N., Arumairajan, S., (2019). Time Series Modelling of Monthly Rainfall in Killinochchi District, Sri Lanka, <em>Proceedings of the International Research Conference of Uva Wellassa University, <\/em>7-9 February, 2019. pp.44.<\/li>\n<\/ul>\n<p><strong>2018<\/strong><\/p>\n<ul>\n<li>Varathan, N., Wijekoon, P., (2018). Optimal Generalized Logistic Estimator, <em>Communications in Statistics-Theory and Methods<\/em> , 47:2, 463-474, DOI: 10.1080\/03610926.2017.1307406<\/li>\n<li>Varathan, N., Wijekoon, P., (2018). Liu-Type logistic estimator under Stochastic Linear Restrictions, <em>Ceylon Journal of Science<\/em> 47(1): 21-34. DOI: http:\/\/doi.org\/10.4038\/cjs.v47i1.7483<\/li>\n<li>Pathirana, H. and Varathan, N. (2018) Statistical Analysis of Variables Influencing Type of Birth in Sri Lanka: A Logistic Regression Approach. <em>Open Journal of Statistics<\/em>, <strong>8<\/strong>, 317-326. doi: <a href=\"https:\/\/doi.org\/10.4236\/ojs.2018.82020\">4236\/ojs.2018.82020<\/a>.<\/li>\n<li>Herath, H.M.R.D.S., Varathan, N., (2018). Statistical modelling of monthly electricity sales in Colombo: ARIMA approach, <em>Proceedings of the 3<sup>rd<\/sup> International <\/em><em>Research Symposium on Pure and Applied Sciences (IRSPAS-2018)<\/em><em>, University of Kelaniya,<\/em> 26<sup>th<\/sup> October, 2018. pp.78.<\/li>\n<li>Mirojan, U., Varathan, N., Arumairajan, S., (2018). Time series modelling of re onion production in Jaffna, Sri Lanka, <em>Proceedings of the 3<sup>rd<\/sup> International <\/em><em>Research Symposium on Pure and Applied Sciences (IRSPAS-2018)<\/em><em>, University of Kelaniya,<\/em> 26<sup>th<\/sup> October, 2018. pp.79.<\/li>\n<\/ul>\n<p><strong>2017<\/strong><\/p>\n<ul>\n<li>Varathan, N., Wijekoon, P., (2017). A stochastic restricted almost unbiased ridge estimator in logistic regression, <em>Proceedings of the iPURSE,University of Peradeniya<\/em>, 24th, November, 2017. pp.36<\/li>\n<li>Varathan, N., Wijekoon, P., (2017). Performance of the almost unbiased Liu- estimator in logistic regression under exact linear restrictions, <em>Proceedings of the PGIS research Conference, University of peradeniya<\/em>, 8-9, September, 2017. pp.49<\/li>\n<li>Nimantha, D.J., Varathan, N., (2017). Factors associated with low birth weight babies in Jaffna,Sri Lanka, <em>Proceedings of the International <\/em><em>Research Symposium on Pure and Applied Sciences (IRSPAS-2017)<\/em><em>, University of Kelaniya,<\/em> 20<sup>th<\/sup> October, 2017. pp.71<\/li>\n<li>Wicramarathna, W.AD.S., Varathan, N., Arumairajan, S (2017). Time series modelling of Tea production of Sri Lanka, <em>Proceedings of the Vavuniya Campus International <\/em><em>Research Symposium (VCIRS-2017)<\/em><em>,<\/em> 9<sup>th<\/sup> August, 2017. pp.49<\/li>\n<\/ul>\n<p><strong>2016<\/strong><\/p>\n<ul>\n<li>Varathan, N., Sutradhar, B. C., Jowaheer, V., Biswas, A., (2016). Inferences in median regression models for asymmetric longitudinal data: A quasi-likelihood approach, <em>Brazilian Journal of probability and Statistics<\/em>, 30(1), 28-46.<\/li>\n<li>Varathan, N., Wijekoon, P., (2016). Ridge Estimator in Logistic Regression under stochastic linear restriction.&nbsp; <em>British Journal of Mathematics and Computer Science<\/em>. 15 (3), 1. DOI: 10.9734\/BJMCS\/2016\/24585<\/li>\n<li>Varathan, N. and Wijekoon, P.&nbsp; (2016) . On the Restricted Almost Unbiased Ridge Estimator in Logistic Regression. <em>Open Journal of Statistics<\/em>, 6, 1076-1084.&nbsp; <a href=\"http:\/\/dx.doi.org\/10.4236\/ojs.2016.66087\">http:\/\/dx.doi.org\/10.4236\/ojs.2016.66087<\/a><\/li>\n<li>Pathirana H.P.R.R Varathan N, (2016), Identifying the influential factors for type of birth. <em>Proceedings of the Wayamba University International Conference<\/em>, 19-20, August, 2016. pp.36<\/li>\n<\/ul>\n<p><strong>2015<\/strong><\/p>\n<ul>\n<li>Renuraj, S., Varathan, N., Satkunananthan, N., (2015). Fcators influencing traffic accidents in Jaffna,. <em>Sri Lankan Journal of Applied Statistics<\/em>. 16(2), 117-133.<\/li>\n<li>Nagarajah, V., Wijekoon, P., (2015). Stochastic Restricted Maximum Likelihood Estimator in Logistic Regression Model. <em>Open Journal of Statistics<\/em>. 5, 837-851.<\/li>\n<li>Vinothini and&nbsp; N. Varathan, \u2018\u2018Modelling and forecasting of Crude oil price\u2019\u2019, Proceedings&nbsp; of the International Conference on Multidisciplinary Approaches , Faculty of Graduate studies, University of Sri Jayewardenepura , p168, (2015).<\/li>\n<li>Premini and&nbsp; N. Varathan, \u201cAnalysis of stock prices using Markov chain\u2019\u2019, Proceedings&nbsp; of the International Conference on Multidisciplinary Approaches , Faculty of Graduate studies, University of Sri Jayewardenepura , p173, (2015).<\/li>\n<\/ul>\n<p><strong>2014<\/strong><\/p>\n<ul>\n<li>Renuraj, N. Varathan, and N. Satkunananthan, \u201cFactors influencing traffic accidents in Jaffna\u2019\u2019, Proceedings of the Wayamba International Conference , Wayamba University of Sri Lanka , p313, (2014).<\/li>\n<li>Kanisda, N. Varathan, and S. Arivalzahan, \u201cA roboust scaling method for G.C.E (A\/L) examination\u2019\u2019, Proceedings of the Wayamba International Conference , Wayamba University of Sri Lanka , p60, (2014).<\/li>\n<\/ul>\n<p><strong>2010<\/strong><\/p>\n<ul>\n<li>Varathan, K. Perera, and N. Wikramanayake, \u201cStatistical modeling of extreme rainfall in Colombo\u2019\u2019, Proceedings of the International Conference on Sustainable Built Environment (ICSBE-2010) , University of Peradeniya, Sri Lanka, pp., (2010).<\/li>\n<\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3367\" class=\"elementor-tab-title\" data-tab=\"7\" role=\"button\" aria-controls=\"elementor-tab-content-3367\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Grants<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3367\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"7\" role=\"region\" aria-labelledby=\"elementor-tab-title-3367\"><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Dr.N.Varathan B.Sc. [Hons] (Jaffna), M.Sc (Canada), M.Sc (Pera), Ph.D(Pera). Senior Lecturer in Statistics varathan@univ.jfn.ac.lk 0779352990 Google Scholar Academic Profile Head, Department of Mathematics and Statistics, From September 2023 Ph.D in Statistics (University of Peradeniya, Sri Lanaka, 2020). M.Sc in Statistics (Memorial University, Canada, 2012). M.Sc in Statistics (University of Peradeniya, Sri Lanaka, 2010). B.Sc (Hons) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","ocean_post_layout":"full-width","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-636","page","type-page","status-publish","hentry","entry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"ocean-thumb-m":false,"ocean-thumb-ml":false,"ocean-thumb-l":false},"uagb_author_info":{"display_name":"mathwpadmn","author_link":"https:\/\/maths.jfn.ac.lk\/index.php\/author\/mathwpadmn\/"},"uagb_comment_info":0,"uagb_excerpt":"Dr.N.Varathan B.Sc. [Hons] (Jaffna), M.Sc (Canada), M.Sc (Pera), Ph.D(Pera). Senior Lecturer in Statistics varathan@univ.jfn.ac.lk 0779352990 Google Scholar Academic Profile Head, Department of Mathematics and Statistics, From September 2023 Ph.D in Statistics (University of Peradeniya, Sri Lanaka, 2020). M.Sc in Statistics (Memorial University, Canada, 2012). M.Sc in Statistics (University of Peradeniya, Sri Lanaka, 2010). B.Sc (Hons)&hellip;","_links":{"self":[{"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/pages\/636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/comments?post=636"}],"version-history":[{"count":41,"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/pages\/636\/revisions"}],"predecessor-version":[{"id":2585,"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/pages\/636\/revisions\/2585"}],"wp:attachment":[{"href":"https:\/\/maths.jfn.ac.lk\/index.php\/wp-json\/wp\/v2\/media?parent=636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}