• Doctor of Engineering in Industrial Engineering and Management, specializing in Financial Engineering from Tokyo Institute of Technology Japan 2001
• Master of Engineering in Industrial Engineering and Management, specializing in Financial Engineering from Tokyo Institute of Technology Japan -1998
• BSc in Industrial Management from University of Kelaniya, Sri Lanka -1993

Prof. Ms. Annista Wijayanayake received her Doctor of Engineering and Master of Engineering  in Industrial Engineering and Management, specializing in Financial Engineering from Tokyo Institute of Technology Japan, respectively in 2001 and 1998. Prior to her postgraduate studies  she had completed a Bachelor’s degree in Industrial Management from University of Kelaniya, Sri Lanka. Currently she is serving as a Senior Lecturer at the Department of Industrial Management, University of Kelaniya. 

Prof. Ms. Wijayanayake is having research and teaching experience in Japan and Australia in tertiary education on undergraduate and postgraduate level. She had served as a honorary Research Fellow at Royal Melbourne Institute of Technology (RMIT) Australia and as a Teaching Associate, at Department of Management and Department of Econometrics and Business Statistics, Faculty of Business and Econometrics, Monash University-Australia from 2017-2019. She won many international awards for her research and teachings. She received the academic excellence award for her Masters degree by research  by  Tokyu Foundation-Japan  for Inbound Students in 1998. She also received the 2019 teaching excellence award from the Department of Econometrics and Business Statistics-Monash University, Australia, for her teachings. 

Prof. Ms. Wijayanayake had served as an Academic Advisor for B.Sc in Management and Information Technology degree programme, University of Kelaniya from 2003 to 2008. She served as the Chief Grant coordinator in “Quality and Innovation Grant” offered by World bank to upgrade and enhance the quality of undergraduate study programmes in Sri Lanka. Further she had served as the  Chair of the International Conference on Applied and Pure Sciences (ICAPS 2020) She had worked as the coinvestigator of  international research on unnatural deaths among women and girls in Sri Lanka which is funded by United Nation Population fund, Sri Lanka. Further she Served as Rapporteur at the national Workshop on “Enhancing Gender equity /Equality in Sri Lankan universities organised, International Labour Organization. Her research has been featured in prestigious journals such as Mathematical Programming, International Journal of Theoretical and Applied Finance, Journal of Global Optimization and in many International Conference Proceedings.

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• Statistics
• Decision Science
• Systems Optimization
• Portfolio Optimization
• Project Management
• Application of Optimization for Supply Chain and Logistics
• Health Care Management
• Medical Legal Systems
• Gender Studies
• Women and Gender
• Women in Rural areas

• Statistics
• Supply Chain and Lean Six Sigma
• Operations Research
• Portfolio Management

• IEEE Member

• Papers in Indexed Journal and Peer Reviewed Journals

  1. H. Konno, A.Wijayanayake Portfolio Optimization Problems under Concave Transaction Costs and Minimal Transaction Unit Constraints”. Mathematical Programming, 89 (2001) 233-250.
  2. H. Konno, A.Wijayanayake “Minimal Cost Index Tracking under Nonlinear Transaction Costs and Minimal Transaction Unit Constraints”, International Journal of Theoretical and applied Finance, Vol.4, No 6, (2001) 939-957.
  3. H. Konno, A.Wijayanayake “Portfolio Optimization under D.C. Transaction Costs and Minimal Transaction Unit Constraints”, Journal of Global Optimization, 22 (2002) 137-154.
  4. H. Konno, A.Wijayanayake “Mean Absolute Deviation Portfolio Optimization Model under Transaction Costs”, Journal of the Operation Research Society of Japan, 42 (1999) 422-435.
  5. H. Konno, H. Shirakawa and A.Wijayanayake  “Portfolio Optimization Model for Small Investors”,  Journal of Japan Financial Planners Society.
  6. H. Konno, A.Wijayanayake Abstract of the "Mean Absolute Deviation Portfolio Optimization Model under Transaction Costs", The International Abstracts in Operations Research, online : http://www.palgrave-journals.com/iaor/index.html.
  7. T.R.N Fernando and A.N Wijayanayake “Knowledge and understanding about cervical cancer, risk factors and prevention among rural women in Anuradhapura, North central province of Sri Lanka” Journal of Rajarata University, Sri Lanka. Volume 1, December 2013.
  8. Annista Wijayanayake and Manisha Dandunna, “An efficient model to improve the performance of platelet inventory of the blood banks”, Advances in Science, Technology and Engineering Systems, Journal Vol. 2, No. 3, pg 839-844, 2017

• Full Papers in Refereed Conference Proceedings

1. H. Konno, A.Wijayanayake “Portfolio Optimization Model Under Transaction Costs and Minimal Transaction Units”, The Japanese Association of Financial Econometrics and Engineering (JAFEE) Winter Conference; at Keio University, Yokohama-Japan, December 1998,  pg: 210 - 228.
2. H. Konno, A.Wijayanayake “Minimal Cost Rebalancing Problem under Concave Transaction Costs and Minimal Transaction Units Constraints”, Operations Research Society of Japan (ORSJ) Semi Annual Conference; at Seikei University Tokyo-Japan, September 1999,  pg: 18 - 19.
3. H. Konno, A.Wijayanayake “Rebalancing under Nonconvex Transaction Costs”, IEEE/IAFE/INFORMS 2000 Conference on Computational Intelligence for Financial Engineering; at Crown Plaza Manhattan, New York City, USA, March 2000,  pg: 38-41.
4. H. Konno, A.Wijayanayake “Optimal portfolio construction/rebalancing under nonconvex transaction cost Computational Intelligence for Financial Engineering, 2000.(CIFEr) Proceedings of the IEEE/IAFE/INFORMS 2000. http://ieeexplore.ieee.org/abstract/docu , pg 38-41. Publisher IEEE
5. T. Rupasinghe, A.Wijayanayake “Identifying the factors that affect the Sri Lankan Stock market”, International Sri Lankan Statistical Conference, at University of Peradeniya, Sri Lanka, December 2004, pg: 381-388.
6. Jahubar, A.N. Wijayanayake The Most Critical Success Factors in Software Projects proceedings of the 5^th International Conference on Business and Information (ICBI) 2014, University of Kelaniya pp 38-44
7. H Premathilake, A Wijayanayake “Low Visibility of Foreign Banks in the Sri Lankan Banking Industry proceedings of the 5^th International Conference on Business and Information (ICBI) 2014, University of Kelaniya pp 88-96
8. Givantha Weerasinghe and Annista Wijayanayake An Emperical Study on E-Service quality and its impact on customer adoption to Internet Banking, (22nd)Annual Conference of IET Sri Lanka Network 2015, pg: 17-29
9. M Karunarathna, A Wijayanayake, A Study on Colombo Stock Market Anomalies due to presidential and General Elections, Faculty of Commerce and Management Studies, University of Kelaniya, 2015, Pg 50-59, http://repository.kln.ac.lk/xmlui/handle/123456789/10543
   Gunaratne, N. and Wijayanayake, A. Identifying the Factors Affecting Non-Performing Advances: Lending Officers Perspective. 6th International Conference on Business & Information ICBI – 2015, Faculty of Commerce and Management Studies, University of Kelaniya, Sri Lanka. pp 12-18
10. Dinusha Dissanayake and Annista Wijayanayake, “Factors affecting to the profitability of Sri Lankan domestic commercial Banks, 5th International conference on Management and Economics, Faculty of Management, University of Ruhuna, Sept 2016, pg: 209-218
11. Annista Wijayanayake, Mayoora Umadevan and Thanuja C Ranewella. Mobile application for University Library management system. National conference on University Librarians Association, Sri Lanka June 2017pg 16-18
12. UHDBM Wickramaarachchi, A Wijayanayake, “Optimizing the allocation of training programmes to maximize the organizational goals”, 11th International research Conference, General Sir John Kotalawala Defence University Sri Lanka, 2018, pg 115-12
13. A.P.K.J.Prabodhika, D.H.H Niwunhella, A. Wijayanayake, (2020) Framework for Measuring Sustainability Performance of Logistics Service Providers- A Systematic Review of Literature, 11th International Conference on business and information (ICBI 2020),  Faculty of Commerce and Management University of Kelaniya, November 2020.
14. M A S M Perera, A Wijayanayake, S.Peter (2020) Analysis of correlation of risk in the supply chain disruption in apparel industry during an epidemic outbreak, National Conference on “COVID-19: Impact, Mitigation, Opportunities and Building Resilience” by National Science Foundation, (NSF) 2021 January
15. A.P.K.J.Prabodhika, A. Wijayanayake and D.H.H Niwunhella, (2021) Measuring Sustainability Performance of Logistics Service Providers using AHP, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
16. M A S M Perera, A Wijayanayake, S.Peter (2021)Analysing the risk in the supply chain of apparel industry during an epidemic outbreak, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
17. D.G.T.M. Perera, A Wijayanayake, APR Wickramarachchi,(2021), A Combined Approach of AHP and DEMATEL Methods for Evaluating Key Success Factors of 3PL Service Providers, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
18. H.I.Udakanjalee, A. Wijayanayake,  D.H.H Niwunhella,(2021) Effective Supplier Selection Using ANP, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
19. N.T.H.Thalagahge,  A. Wijayanayake, D.H.H Niwunhella (2021) Developing a Multi Criteria Decision Making Framework to Select the Most Suitable Production System in Apparel Firms: Use of ANP Method, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
20. Thamara Egodawela, A Wijayanayake, S.Peter Determinant of Factors affecting customer satisfaction: Case of the logistics industry in Sri Lanka, 11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021
21. H.D.W. Weerakkody, A. Wijayanayake, D.H.H Niwunhella Vehicle Routing and Shipment Consolidation in a 3PL DC: A Systematic Literature Review on the Solution Approaches,  11th Annual International Conference on Industrial Engineering and Operations Management, Singapore, March 2021