Professor Piyadasa Ratnayake is a distinguished scholar in the field of economics with a remarkable academic career spanning several decades. He has served as a Professor of Economics at Saga University in Japan, where he is now honored as Professor Emeritus.

Professor Ratnayake’s academic journey began with a B.A. in Economics with second class (Upper Division) honors from the University of Sri Lanka, Vidyodaya Campus (now the University of Sri Jayewardenepura) in Nugegoda, Sri Lanka, in 1978. He further advanced his expertise with an MSc in Agricultural Economics from the University of Tokyo, Japan, in 1985, and later earned a PhD in Economics from Ryukoku University in Kyoto, Japan, in 1990.

Throughout his career, Professor Ratnayake has made significant contributions to the field of economics, with a particular focus on agricultural economics. His research, teaching, and publications have been widely recognized and respected in academic circles. As an emeritus professor, he continues to inspire and mentor the next generation of economists.

EDUCATION

B.A. in Economics with second class (Upper Division) honors, University of Sri Lanka, Vidyodaya Campus, (University of SriJayewardenepura) Nugegoda, Sri Lanka, 1978
MSc in Agricultural Economics, University of Tokyo, Japan, 1985
PhD in Economics, Ryukoku University, Kyoto, Japan, 1990

EMPLOYMENT RECORDS:

Administrative Clerk, Ministry of Public Administration, The Government of Sri Lanka, 1976-1978
Assistant Lecturer, Faculty of Economics, University of Kelaniya, Sri Lanka, 1978-1980
Project Officer (Regional Development through expansion of export-oriented products), Sri Lanka Export Development Board, Sri Lanka, 1980-1989 (1982-89)
Visiting Lecturer, Osaka YMCA International Center, Osaka, Japan, 1985-87
Visiting Lecturer, Tokyo University of Foreign Studies, Tokyo, Japan, 1987
Lecturer, Faculty of Economics, Saga National University, Japan, 1989-1990
Associate Professor, Faculty of Economics, Saga National University, Japan, 1990-1995
Visiting Research Fellow, School of Economics, La Trobe University, Melbourne, Australia, 1995-1996
Professor, Faculty of Economics, Saga National University, Japan, 1997
Visiting Research Fellow, School of Economics, Centre for Development Studies, University of Auckland, New Zealand, 2003-2004
Special Adviser to President of Saga University, 2005 – 2007
Visiting Lecturer, Kumamoto Gakuin University, Japan, 2007
Honorable Visiting Research Fellow, School of Economics, Centre for Development Studies, University of Auckland, New Zealand, 2012-2014
Professor, Faculty of Economics, Saga National University, Japan, 1997 to March 2017

15. Professor Emeritus, Saga University, Japan, April 2017

Visiting Researcher, Faculty of Economics, Saga University, Japan, 2017-2022
Visiting Lecturer, Nagasaki Wesleyan University, Nagasaki, Japan, 2020
Short-term Training on Japan Modernization Studies, JICA Chair (JICA Program for

Japanese Studies), 2021

ACADEMIC PRICE AWARDS

Ryukoku University Award (Ryukoku Shoreisho in Japanese) for Research and Academic

Activities, Kyoto, Japan, 1996

Meritorious Awards for Academic (Koro Sho in Japanese), Saga University, Japan, 2012

ACADEMIC AWARDS:

(a) Individual Research Grants

Japanese Government Scholarship (MEXT scholarship), Postgraduate Studies in Japan, 1982-1988
Toyota Foundation Research Grant, Survey on Export Production Village in Sri Lanka, 1986-1987
Japan Foundation Fellowship, Doctoral Dissertation Fellowship, 1988-1989
Toyota Foundation Grant for Publication, Towards Self-Reliant Rural Development: A Policy Experiment in Sri Lanka, Karunaratne & Sons Ltd., Colombo, Sri Lanka 1992
Japan Foundation Fellowship for Post-doctoral Research Works in Australia, Pattern of Japan Investment in the Australian Tourism and Real Estate Industries, 1995-1996
Toyota Foundation Grant for Translation and Publication, Japan Sanskurthiya ha Kalamanakaranaya (Culture and Management in Japan), Translated to Sinhala Language 1997-1998
Grant-in-Aid for Scientific Research (c) (2), Ministry of Higher Education in Japan, 1999-2001: The Role of Japanese Overseas Cooperation Volunteers in Alleviation of Rural Poverty in Sri Lanka: Perspectives
Toyota Foundation Grant for Translation and Publication, 1999-2000: Pasuchath Yuddhakalina Japan Arthikaya (The Postwar Japanese Economy), Translated to Sinhala Language, 2000
Grant-in-Aid for Scientific Research (c) (2) Ministry of Higher Education in Japan, 2008-2010: Contribution of Japanese Assistance on Human Capital Development towards Economic Development in Sri Lanka: A Survey on Policies and Performances
Grant-in-Aid for Scientific Research (c) (2) Ministry of Higher Education in Japan, 2011-2013: Sri Lanka’s Social Business Development and Poverty Reduction: A Study on Japanese Technical Cooperation
Grant-in-Aid for Scientific Research (c) (2) Ministry of Higher Education in Japan, 2014-2018: Contribution of Japan’s “Foreign Technical Intern Training Program” on Alleviation of Poverty in Asia and Resolve of Labor Shortages in Japan

(b) Joint Research Grants

The Economic Role of Japan and China in the East Asia Region, Joint Research Grant, The Promotion and Mutual Aid Corporation for Private Universities of Japan, 1990-1992
Economic Development in Asia and Japan’s Role, Field Research Grant, Monbusho International Scientific Research Programme, 1991-1994
Mutual Cooperation of International Universities, Monbusho International Scientific Research Programme, 1992-1995
Joint Research Grant, Monbusho International Scientific Research Programme, 1995-1998
Action-oriented Research for Participatory Rural Development in Sri Lanka, Japan International Cooperation Agency, 1998-2001
Agricultural Modernization, its Impact on Regional Economies and Ways for Sustainable Development in Asia: A Study of Selected Cases in Japan, Thailand and Sri Lanka, Joint Research Grant, Monbusho International Scientific Research Programme, October 2003-March 2006

AREA OF EDUCATION

Undergraduate: Economics for Developing Countries, International Cooperation, International Economics, Development Economics, Economics for Asian Countries, International Exchange Training.
Graduate School (Master Course): Economics for Developing Countries, Development Economics, Research Methodology
Graduate School (Doctoral Course): Advanced Course on Economics for Developing Countries, Research Methodology
External Examiner of Doctoral Dissertations in Center for Development Studies, University of Auckland, New Zealand; and Faculty of Economics, Ryukoku University, Kyoto, Japan.
International Exchange Training (education related to global human resource development). This subject is a specialized course that has been implemented since 2000 for “internationalization of education.” This course sends undergraduate students to Asian countries for a short period to conduct basic economic and social research and allow them to interact with local students in Asia. As part of the specialized education offered by the Faculty of Economics, the purpose of this program is to deepen understanding of social scientific methodologies through the experience of empirical analysis, as well as to think about the various aspects of the globalizing international society from multiple perspectives and actively engage in them. The aim is to develop the qualities of a capable citizen.

MAJOR RESEARCH WORKS AND PUBLICATIONS:

Master Thesis:

The Extension Process of Paddy Cultivation Technologies and Farmers’ Participation in Meiji Era, Japan: Comparative Study between Japan and Sri Lanka, Faculty of Agriculture, Department of Agricultural Economics, University of Tokyo, Japan, 1985, 300 Pages, (Japanese)

Ph.D. Thesis:

dk_002_001.pdf

PUBLICATIONS:

Refereed Books as Sole/Joint Author

A Study on Agricultural Development in the Okkampitiya Colonization Scheme in Sri Lanka, in Comparative Study on Family Farm, Ed. Manabu Tanaka, Ochanomizu Publication, Tokyo, Japan, 1987, PP. 277-298 (Japanese)
Towards Self-Reliant Rural Development: A Policy Experiment in Sri Lanka, Karunaratne & Sons Ltd., Colombo, Sri Lanka, 1992 (English)
Japanese Direct Investment in Asia: A Study on Sri Lanka and Thailand, in Japanese Role in Economic Development in Asia, Part I, Ed. by Asian Economic Studies, Hiroshima University of Economic Studies, Hiroshima, Japan, 1992, PP.115-170 (English)
Impact of Japanese Direct Investment on National Economies of South and Southeast Asia, in Japanese Role in Economic Development in Asia, Part II, Ed. Hiroshima University of Economics, Hiroshima, Japan, 1993, PP.111-167 (English)
Impact of Japanese Investment on Diversification of Trade in Asia: The Experience of Trade and Investment in Thailand and Sri Lanka, in Japanese Role in Economic Development in Asia, Part III, Ed. Hiroshima University of Economics, Hiroshima, Japan, 1994, PP.125-15, (Japanese)
Economic Relationship between Japan and Sri Lanka: 1950-92, in Sri Lanka, Ed. Vocational Training Center, Tokyo, Japan, 1994, PP.27-46, (Japanese)
Japanese Investment in Asia: The Case of China, in Modern Chinese Economy, Kyushu University Press, Kyushu, Japan, 1996, PP. 222-263, (Japanese)
Pattern of Japanese Investment in the Australian Tourism and Real Estate Industries, Economic Research Report No. 96.1, School of Economics and Commerce, La Trobe University, Bundoora, Australia, October 1996, (English)
Agricultural Development: Past Trends and Policies, in Dilemmas of Development: Fifty Years of Economic Change in Sri Lanka, Ed. By W.D. Lakshman, Sri Lanka Association of Economists, Sri Lanka, 1997, (English)
Japan Sanskurthiya ha Kalamanakaranaya (Culture and Management in Japan), Translated to Sinhala Language, Toyota Foundation, 1998, (Sinhala)
Rural Development through Self-Reliance Approach: Lessons from Practice in Sri Lanka, in Development, Gender, Cultural Change in a Multi-ethnic Society: Aspects of Modernization in Sri Lanka, Ed. Motoyoshi Omori, Akashi Shoten, Tokyo, 1999 (Japanese)
New Waves of Agricultural Development in Asia, Ed. Mashayoshi Tsutagawa and Piyadasa Ratnayake, Karunaratne & Sons Ltd., Colombo, Sri Lanka, 2000 (English)
An Introduction to Agricultural Sector in Asia, in New Waves of Agricultural Development in Asia, Ed. Mashayoshi Tsutagawa and Piyadasa Ratnayake, Karunaratne & Sons Ltd., Colombo, Sri Lanka, 2000 (English)
An Alternative Approach for the Survival of Agricultural Co-operative Movement under an Open Market Policy: A Study on Dambadeniya Export Production Village in Sri Lanka, New Waves of Agricultural Development in Asia, Ed. Mashayoshi Tsutagawa and Piyadasa Ratnayake, Karunaratne & Sons Ltd., Colombo, Sri Lanka, 2000 (English)
Pasuchath Yuddhakalina Japan Arthikaya (The Postwar Japanese Economy), Translated to Sinhala Language, Toyota Foundation, 2000, (Sinhala)
The UC-JICA Joint Study Project on Participatory Rural Development through Mobilization of Local Resources, in Sankagatha Nouson Kaihatsu Hoho no Kakujitsu, JICA, PP. 346-366 (English); PP. 340-345 (Japanese), 2001
Co-author, “Japanese Direct Investments in Sri Lanka”, Lakshman W.D. (ed.) The Distant Neighbours: Fifty Years of Relations between Japan and Sri Lanka, Faculty of Graduate Studies, University of Colombo, 2003, pp. 247-280 (English)
“Official Development Assistance from Japan: Donor Motivations and Recipient Perceptions”, Lakshman W.D. (ed.) The Distant Neighbours: Fifty Years of Relations between Japan and Sri Lanka, Faculty of Graduate Studies, University of Colombo, 2003, pp.191-221 (English)
Lost Opportunities: Sri Lanka’s Economic Relationship with Japan, Karunaratne & Sons Ltd., Colombo, Sri Lanka, 2004 (English)
Mobilising Money, People and Resources for Development, W.D. Lakshman and Piyadasa Ratnayake, The Economic Association of Saga University, Saga, Japan, 2007 (English)
Sri Lanka: Exploring ownership of Aid-Funded Projects: A Comparative Study of Japanese, Norwegian and Swedish Project Aid”, (Joint), in 「Aid relationships in Asia: Exploring Ownership in Japanese and Nordic Aid」、 by Alf Morten Jerve, Yasatami Shimomura, Annette Skovsted Hansen, Palgrave, UK, February. 2008, PP.83-115
The Role of Non-Economic Factors in Economic Development: The Experience of Sri Lanka, (Joint), in 「Dimensions of Sri Lanka Open Economy: Prof. W. D. Lakshman Felicitation Volume」, Ed. Ranjith Bandara, University of Colombo, November 2008, (Sinhala)
Contribution of Human Capital Developed in Japan to Institutional Development in Sri Lanka, 「Essays in Social Sciences: In Honour of Professor Dayananda Somasundara」, Ed. Herath Madana Bandara and K.R.K. Lal Gunasekara, S. Godage International Publishers (Pvt) Ltd, Colombo, 2011
Human Capital Development with Japanese Assistance: Performance and Lesson Learnt, Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Society, Showado Co. Ltd., 2013
Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic association of Saga University, Saga Printing Co., Japan, 2016
Human Capital Development in Asia with Japanese Technical Intern Training Programme: Opportunities and Challenges, Piyadasa Ratnayake & Saliya De Silva, Saga University Economic Society, Saga Printing Co., Japan, 2018

Refereed Papers as Sole/ Joint Author

Recent Trends of Exports in Sri Lanka, The Journal of Economic Studies, Vol.1, No.1, June 1980, pp. 13-42, Sri Lanka, (Sinhala)
Trade Relationship between Japan and Sri Lanka in the Post-Independent Period, Research Bulletin, No.19, Ryukoku University, Kyoto, Japan, 1986, PP.17-22, (Japanese)
The Extension Process of Paddy Cultivation Technology and Farmers’ Participation in Sri

Lanka, The Journal of Economic and Business Studies of Ryukoku University,

Vol.26, No.3, December 1986, Kyoto, Japan, PP.81-89, (Japanese)

The Rural Economic Development Policy with Export Production Village in Sri Lanka,

The Journal of Economic and Business Studies of Ryukoku University, Vol.27, No.1, June 1987, Kyoto, Japan, PP.77-92, (English)

Technological Improvement and Development of Paddy Production in Meiji Era Japan, The Bulletin of the Graduate School, No.2, 1988, Ryukoku University, Kyoto, Japan, PP.67-84, (Japanese)

The Farmers Participation and Agricultural Administration: Agricultural Extension Process in Meiji Era Japan, The Journal of Economic and Business Studies of Ryukoku University, Vol.28, No.2, August 1988, Kyoto, Japan, PP.95-107, (Japanese)

Experience of Agricultural Development in Sri Lanka: The Rural Sector in Context, Saga University Economic Review,22, No.3, September 1989, Saga, Japan, PP.1-98, (English)

Development of Green Tea Industry in Japan: With Special Reference to Green Tea Production and Marketing in Uji Area, Saga University Economic Review, Vol.22, No.5, January 1990, Saga, Japan, PP.119-167, (English)

Asian Economy and Japan, Annual Research Bulletin of Regional Economic Research Center, March 1990, Faculty of Economics, Saga University, Japan, PP.1-10, (Japanese)

The Present Situation and Future of East Asia and Southeast Asia, The Journal of the Society for Studies on Industrial Economies, Vol.30, Special Issues, May 1990, Kurume University, Japan, PP.1-78 (Joint), (Japanese)

Recent Arguments on Development Economics: With Special Reference to Developing Economies of Asia, Saga University Economic Review,24, No.3, September 1991, Faculty of Economics, Saga University, Japan, PP.1-14, (English)

Economic and Rural Development in Developing Economies of Asia: An Overview on Theories and Practices, The Journal of Economic and Business Studies of Ryukoku University,31, No.3, December 1992, Kyoto, Japan, PP.38-81, (English)

Alternative Rural Development through Self-Reliance Approach, Economic Review, Vol.17, No.8 & 9, November/ December, 1991, People’s Bank, Colombo, Sri Lanka, PP.16-32, (English and Shinhala)

Japanese Direct Investment in Asia: A Study on Sri Lanka and Thailand, Economic Review, 18, No.10, January 1993, People’s Bank, Colombo, Sri Lanka, PP.10-31, (English and Shinhala)

Trend of Foreign Direct Investment in Chinese Socialist Market Economy, Annual Research Bulletin of Regional Economic Research Center, March 1993, Saga University, Japan, PP.56-69, (Japanese)

Impact of Japanese Direct Investment on the National Economies of South and Southeast Asia: The Case of Sri Lanka and Thailand, Saga University, Economic Review, Vol. 26, No.2, July 1993, Saga, Japan, PP. 29-87, (English)
Japanese Direct Investment in Sri Lanka and Thailand, Ryukoku University Economic Review, Vol.33, No.4, March 1994, Kyoto, Japan, PP.162-196, (Japanese)

Japanese Direct Investment and its Impact on Diversification of Trade in Asia: A Study on Foreign Investment and Trade in Sri Lanka and Thailand, Saga University Economic Review,26, No.6, March 1994, Saga, Japan, PP.23-56, (Japanese)

Japanese Investment in China, Saga University Economic Review,7, No.3, October 1994, Saga, Japan, PP.1-32, (Japanese)

Financial System Deregulation and Australian Banks: An Overview, Saga University Economic Review,30, No.1 & 2, May 1997, Saga, Japan, (Joint: P. Edirisuriya, P. Ratnayake), PP.21-50, (English)

A Study on Marketing Conditions of Organic Fertilizer in the Saga Prefecture, in A Survey on Demand and Supply of Organic Fertilizer, Center for Regional Economic Studies, Faculty of Economics, Saga University, Japan, 1998 (Japanese)

A New Policy for the Survival of Agricultural Co-operative Movement under an Open Market Policy: Experience of Sri Lanka, in A Comparative Research on Historical Development of Agricultural Sector, Ed. Manabu Tanaka, The University Tokyo, 1998 (Japanese)

Looking for Opportunity in the North: An Overview on International Migration as a Problem of Development in the South, Saga University Economic Review, (Joint: Sarath Gamlath, Piyadasa Ratnayake), Vol.32, No.1, May 1999, Saga, Japan, PP.139-162, (English)

Perspective of Japan’s ODA Relations with Sri Lanka: An Overview of Motivations of the Donor and Perceptions of the Recipient, Saga University Economic Review,33, No.3.4, January 2001, Saga, Japan, PP.1-37, (English)

A Study on the Behavioural Pattern of Portfolio Investors in Developing Countries: Evidence from Sri Lanka, Saga University Economic Review, (Joint: Piyadasa Edirisuriya, Piyadasa Ratnayake), Vol. 34, No. 1, May 2001, Saga, Japan, PP.1-17, (English)

Alternative Agriculture as a Method of Strengthening the Agricultural Sector in Sri Lanka: A case Study on the Coconut Triangle, Saga University Economic Review, (Joint: Sampath Amaratunge, P. Ratnayake, Y. Shiratake, J.Takeda), Vol. 34, No 2, July 2001, Saga, Japan, PP.19-36, (English)

Political Constraints on Economic Integration in South Asia: Perspectives, Saga University Economic Review, 34, No 3, September 2001, Saga, Japan, (Joint: R.H.S. Samaratunga, Piyadasa Ratnayake) PP.1-33, (English)

Japanese Official Development Assistance to Sri Lanka: An Analysis of Perceptions of the Recipient, Saga University Economic Review, 34, No 4, November 2001, Saga, Japan, PP.29-68, (English)

Survival of Small-Scale Agro-Based Industries in a Market Economy: A Case Study on a Milk Processing Industry in Kurunegala District of Sri Lanka, Ryukoku University Economic Review, Vol. 41, No. 5, March 2002, Kyoto, Japan, (Joint: Sampath Amaratunge, Hisashi Nakamura, Piyadasa Ratnayake), PP.43-66, (English)

The Role of Japan Overseas Cooperation Volunteers in Socioeconomic Development of Rural Sector in Sri Lanka: Perspectives, Saga University Economic Review, 35, No 1, June 2002, Saga, Japan, PP.45-78, (English)

The Possibility of Using Japan Overseas Cooperation Volunteers in Programmes of Rural Poverty Alleviation in Sri Lanka, Saga University Economic Review, 35, No 3, August 2002, Saga, Japan, PP.1-49, (English)

The Effect of Foreign Aid on Macroeconomic Variables: The Experience of Sri Lanka, Saga University Economic Review, 38, No 3, September 2005, Saga, Japan, PP.107-132, (English), (Joint)

Financial Deregulation, Competition and Banks: Australian Experience, Saga University Economic Review, No. 39, Vol. 1, May 2006, pp.1-21 (Joint)

Impact of Samanala Wewa Dam on the Regional Economy of Sri Lanka: A Study of the Kaltota Scheme, Saga University Economic Review, Vol. 39, No 2, July 2006, Saga, Japan, PP.19-68, (English)

Role of ‘Ownership’ in Effectiveness and Efficiency of Foreign Aid: A Case Study of a Japanese Aid Project in Sri Lanka, in Mobilising Money, People and Resources for Development, W.D. Lakshman and Piyadasa Ratnayake, The Economic Association of Saga University, Saga, Japan, 2007, PP.169-210

A New Approach towards Self-Reliant Rural Development: Export Production Village Revisited, Ryukoku Journal of Economic of Economic Studies, Collection of Inter-Civic Studies, Vol. 46, Vo.5,March 2007, Kyoto, Japan, PP.113-133

The Role of Institutions in Economic Development: An Alternative Approach (Joint), Saga University Economic Review, Vol.41, No.3, September 2008, PP 19-35

Japanese Foreign Direct Investment in Asia: Experience from Sri Lanka, Journal of Accounting-Business & Management, (Joint), 15 (2), Indonesia, October 2008,

Effectiveness of Foreign Aid in Local Institutional Environment: The Experience of Japanese Aid in Sri Lanka (Joint), Ryukoku Journal of Economic Studies, 48 No. 3.4 March 2009, PP 97-117
Human Capital Development in Sri Lanka under Japanese Assistance: Strengths and Weakness, Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Review, Vol.43, No. 2, July 2010, pp.1-35

Human Capital Development in Asia under Japanese Assistance: The Experience of Sri Lanka, Piyadasa Ratnayake, Saliya De Silva, The Journal of Economic and Business Studies of Ryukoku University, Vol.50 No. 1&2, December 2010, pp.93-111

Human Capital and Economic Development: A Survey of Conceptual Relationship and Experience, Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Review, Vol. 43, No 1, March 2010, PP.1-18

Human Capital Development in Asia under Japanese Assistance: The Experience of Sri Lanka, Piyadasa Ratnayake, Saliya De Silva, The Journal of Economic and Business Studies of Ryukoku University, Vol.50 No. 1&2, December 2010, pp.93-111

Strengths and Weaknesses of Human Resource Development in Japanese Higher Educational Institutions: A Study on Foreign Students in Japanese Universities (Part One), Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Review, Vol. 44, No 3, November 2011, PP.19-41

Strengths and Weaknesses of Human Resource Development in Japanese Higher Educational Institutions: A Study on Foreign Students in Japanese Universities (Part Two), Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Review, Vol. 44, No 4, March 2012, PP.1-28

Japan’s Grass-roots Technical Cooperation in Social Business Development and Poverty Alleviation: The Conceptual Relationship, Piyadasa Ratnayake, Saliya De Silva, Saga University Economic Review, Vol. 44, No 6, March 2012, PP.157-184

Formal Institutions on Agricultural Development: The Experience of Sri Lanka, 「Ryukoku Journal of Economic Studies」 52 No. 3 December 2012、W.M.A.G. H.A. Premarathne, Piyadasa Ratnayake

Japanese Assistance for Capacity Building of Social Businesses through Grass-roots Technical Cooperation in Sri Lanka: Performance, Opportunities and Challenges, Saliya De Silva, Piyadasa Ratnayake, Saga University Economic Review, Vol. 47, No 1, May 2014, PP.29-60

Enhancing People’s Capabilities and Entitlements in Asia: The Experience of an Export Production Village Project in Sri Lanka, Piyadasa Ratnayake, Conference Volume on The 12th Workshop in Thailand: Challenging Issues in Asian Retail Internationalization: Focusing on Primary Industries in the Emerging Markets, Kasetsart University, Thailand, November 28-30, 2014, PP.119-13

Enhancing People’s Capabilities and Entitlements in Asia: The Experience of an Export Production Village Project in Sri Lanka, Piyadasa Ratnayake, International Journal of Agriculture System, Hasanuddin University, Indonesia, Vol. 3, No. 1, June 2015, pp. 41-57

Impact of Formal Institutions on the Tourist Attractions in Sri Lanka, Poornika Seelagama and Piyadasa Ratnayake, Journal of World Development Studies, Samanala Educational Centre, Sri Lanka and Department of Economics, Gombe State University, Nigeria, Vol. 1, No. 1, June 2015, pp.1-24

Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic Association of Saga University, Japan, 2016, 409 Pages

Japan’s Grass-roots Technical Cooperation in Social Business Development and Poverty Alleviation: The Conceptual Relationship, Piyadasa Ratnayake and Saliya De Silva, in Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic Association of Saga University, Japan, 2016, pp. 177-198

Lessons from Japanese Cooperation Volunteers for Social Business Development in Sri Lanka, Saliya De Silva and Piyadasa Ratnayake, in Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic Association of Saga University, Japan, 2016, pp. 199-216

Tourism for Economic Development: The Invisible Hands that Hold the Pandora’s Box, Poornika Seelagama and Piyadasa Ratnayake, Saga University Economic Review, Vol. 48, No 4, March 2016, pp.39-58

The Role of Informal Institutions on Land Use Pattern in Agrarian Communities in Sri Lanka: A Comparative Study of Two Agrarian Villages, J.M.P.N. Anuradha and Piyadasa Ratnayake, Saga University Economic Review, Vol. 48, No 6, March 2016, pp.41-62

Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic association of Saga University, Japan, 2016

Japan`s Grass-roots Technical Cooperation in Social Business Development and Poverty Alleviation: The Conceptual Relationship, Piyadasa Ratnayake and Saliya De Silva, in Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic association of Saga University, Japan, 2016, pp. 177-198

Lessons from Japanese Overseas Cooperation Volunteers for Social Business Development in Sri Lanka, Saliya De Silva and Piyadasa Ratnayake, in Human Capital, Agriculture, Trade and Globalization: Pathways to Achieving Economic Development in Asia, Ed. Piyadasa Ratnayake and Saliya De Silva, The Economic association of Saga University, Japan, 2016, pp. 199-215

Japanese Assistance for Workforce Development with Technical Intern Training Programme in Asia: Results of the Survey in Saga Prefecture, Piyadasa Ratnayake and Saliya De Silva, Saga University Economic Review, Vol. 49 No 2, September 2016, pp. 1-48

Workforce Development with Japanese Technical Intern Training Programme in Asia: An Overview of Performance, Piyadasa Ratnayake, Saliya De Silva and Rie Kage, Saga University Economic Review, Vol. 49 No 3, December 2016, pp. 1-29
Labour Shortage Problem and Technical Intern Training Programme in Japan: A Survey on Accepting Organizations, Saliya De Silva and Piyadasa Ratnayake, Saga University Economic Review, Vol. 52 No 2・3, November 2019, pp. 1-26 (Japanese)
Role of Japanese Official Development Assistance in Economic Development of Sri Lanka: Past, Present and Future Prospects, Piyadasa Ratnayake and Sampath Amaratunge, in Odyssey of Partnership: 70 Years Japan-Sri Lanka Relations, Ed. By H.D. Karunaratne, The University of Colombo, Sri Lanka, 2022, pp.259-293
The Contributions of Japanese Technical Internship Programme to Poverty Alleviation and Human Resource Development in Asia: The Case of Thailand and Sri Lanka, Rie Kage and Piyadasa Ratnayake, The Journal of Chiiki Sangyou Ronso: Studies in Regional Business and Economics, No. 19, Graduate School of Regional Business and Economics, Okinawa International University, 2024

ACADEMIC PRESENTATIONS:

International Seminar in Connection with UNDP Development Project on The Role of　Cottage Industry in Export of Developing Countries, held in Jakarta, Indonesia, 20 October 14 November 1981
The Rural Development Policy with Export Production Village in Sri Lanka, The Society　of Economic Development in Southeast Asia, University of Kyoto, Center for Southeast Asian Studies, Kyoto, Japan, 22 November 1987
Economic Relationship between Japan and Sri Lanka in the Post-Independence Period, The Society of Economic and Business Administration, Ryukoku University, Kyoto, Japan,　29 June 1988
The Economic Perspectives of South and Southeast Asia, International Seminar, Kurume University, Kyushu, Japan, 12 November 1989
An Alternative Strategy for Economic Development in Developing Economies of Asia, Saga University Economic Society, Saga, Japan, 15 June 1990
Historical Trend of Development Economics, Society for International Economics, Seinan Gakuin University, Kyushu, Japan, 30 March 1990
Alternative Policy for Rural Development in Developing Countries of Asia: An Experience of Sri Lanka, Society for Land Tenure History, Kyushu University, Japan, June 9, 1990
Dynamism of the Asian Development and its Diversification, International Economic Society, Fukuoka University Seminar House, Fukuoka, Japan, 27 November 1994
Rural Development through Self-Reliance Approach: Lessons from Practice in Sri Lanka, International Symposium on Development, Gender and Cultural Change: Aspects of Modernization in Sri Lanka, Organized by International Christian University, Tokyo, 12 December 1998
Institutional Effects of Aid: A Comparative Study of Nordic and Japanese Aid in Sri Lanka and Vietnam, International Workshop on Forging Partnership: A Comparative Study of Institutional Responses to Nordic and Japanese Aid in Asia, Organized by National Academy for Social Sciences, International Department, Hanoi, Vietnam, 19-21 March 2004
Sri Lanka- Japan Economic-Organization, Sri Lanka’s Economic Relationship with Japan: Trade, Investment, and Aid Relations in the last Five Decades, Fukuoka, September 17, 2004
UN Seminar, [アクロス福岡ＢＦ２イベントホール] 世界ハビタット・デー２００４福岡記念シンポジウムCommentator on「都市と農村の共生、アジアとともに歩む日本の国づくりに向けて」
China-Japan－Korea International　Symposium, Commentator for Prof. Zhang Yongtao’s paper on Socioeconomic Development in Three Major Regions in Jiangsu in China, Chonnam National University, South Korea, October 28-31, 2004
A Sustainable Approach towards Self-Reliant Rural Development: Lessons from Practice　in Sri Lanka, ２００５年１０月２２日, 中国上海華東師範
International Workshop, The 16^th Japan-Korea-China Joint Symposium on Labor Migration, Technology Transfer and Economic Development in Asia, Moderator and Commentator, Faculty of Economics, Saga University, November 25, 2006
Seminar on University Contribution to Economic Development: Lessons from Japan, University of Peradeniya, Sri Lanka, March 15, 2007
Seminar on the Role of Informal Institutions in Economic Development: Experience of Japan, Department of Economics, University of Peradeniya, Sri Lanka, February 1, 2008
Seminar on the Role of Informal Institutions in Economic Development: Experience of Japan, Faculty of Economics, Kasetsart University, Bangkok, Thailand, February 8, 2008
Speech on the Internationalization Activities in Japan: Present and Future Perspective, Saga Shicho Koenkai, Hotel Hagakure, Saga, February 16, 2008
International Labour Migration and Economic Development: Experience of Japan, Shimin Daigaku, Utsurattokan, Saga City, Saga, October 10, 2008
Foreign Labors and Economic Development in Asia, Saga Minami Shokou Kaikan, Saga City, November 15, 2008
A paper presented on the Role of Agricultural Extension and Farmers Participation in the Modernization of Agricultural Technologies: A Lesson from the Japanese Experience, “Agricultural Extension Conference 2009”, University of Peradeniya, Peradeniya, Sri Lanka, August 27, 28, 2009
Role of Education in Economic Development: The Experience of Sri Lanka, 日本国際経済学会　第６８回全国大会（68^th International Conference of Society of Japan International Economics）, (Joint)２００９年１０月１７日、中央大学多摩キャンパス, October 17, 2009
日本南アジア学会　第23回全国大会、「内戦後のスリランカ経済：達成、教訓および将来への挑戦」、2010年10月2日（土）法政大学多摩キャンパス
第8回佐賀大学国際っシンポジウム、『グローバル人材育成のあり方を考える～留学生から見た日本の大学教育の長所と短所』、「ソーシャル・ビジネスの展開に向けた日本の草の根技術協力～貧困削減の機会と挑戦」、2011年2月23日
第9回佐賀大学国際っシンポジウム、『ソーシャル・ビジネスと貧困軽減　～　日本の草の根技術協力のあり方を考える』、「ソーシャル・ビジネスの展開に向けた日本の草の根技術協力～貧困削減の機会と挑戦」、2012年　1月26日　(木)
Japanese Development Assistance for Capacity Building of Social Businesses in Sri Lanka’, Saliya De Silva and Piyadasa Ratnayake, The 9^th International NAPSIPAG Conference 2012 on “Development Challenges in the Asia Pacific: Millennium Development Goals and Beyond”, December 13, 2012, Colombo, Sri Lanka
The Japanese Development Assistance for Capacity Building of Social Businesses in Sri Lanka, Saliya De Silva and Piyadasa Ratnayake, Conference on Sri Lanka-Japan Collaborative Research 2013, University of Peradeniya, Sri Lanka, March 29-31, 2013
Strengths and Weaknesses of Human Resource Development in Japanese Higher Educational Institutions: A Survey of Foreign Students, Second International Conference on Emerging Sri Lanka: Sharing Japanese Governance and Developmental Experience, Tokyo Institute of Technology, Ookayama Campus, Tokyo, June 9, 2013
Lessons from Japanese Overseas Cooperation Volunteers for Social Businesses Development in Sri Lanka, Saliya De Silva and Piyadasa Ratnayake, International Conference on Sustainable Enterprises of the Future Conference, Robbert Morris University, Pennsylvania, USA, September 25-26, 2013
「アジアの人的資源育成と貧困軽減に対する日本の技能実習制度の貢献」『移民政策学会』、長崎大学多文化社会学部、2019年12月7日

DOMESTIC AND INTERNATIONAL SURVEYS:

Domestic Surveys (Japan):

Household Survey on Agricultural Development in Otaki Village, Gunma Prefecture, Tokyo, 1982, Joint Research with Graduate Students in University of Tokyo, Japan
A Sample Survey on Sericulture Farming in Saitama Prefecture, Tokyo, Joint Research with Graduate School of Agricultural Economics, University of Tokyo, Japan, 1983
A Sample Survey on Paddy Farming in Ooyama Village, Akita Prefecture, Joint

Research with Graduate School of Economics, University of Tokyo, Japan, 1983

A Survey on Dairy Farming in Nagoya Denmark Village, Aichi Prefecture, Joint Research with School of Agricultural Economics, University of Tokyo, Nagoya, Japan, 1984
A Sample Survey on Fruit Farming in shizuoka Prefecture, Joint Research with Graduate School of Agricultural Economics, University of Tokyo, Japan, 1984
A Survey on Green Production and Marketing in Uji Area, Uji, Kyoto, Japan, 1989
A Survey on Industrial Park in Saga Prefecture, Joint Research with the Regional Research Center, Saga University, Japan, 1989
Demand and Supply for Organic Fertilizer in the Kyushu Island, Joint Research with Nishi Arita Town Office, Saga Prefecture, Japan, 1997-1998

International Surveys:

A Study on Development of Export-Oriented Cottage Industries in Indonesia, Sponsored by UNDP, 1981
A Feasibility Study on Export-Oriented Products in Kurunegala District, Sponsored by Sri Lanka Export Development Board, Sri Lanka, 1981
A Survey on Export Production Village in Sri Lanka, Kurunegala District, Sri Lanka, Sponsored by Toyota Foundation, Tokyo, Japan, 1986/87
Statistical Survey on the Role of Japanese Investment in Economic Development of Thailand and Sri Lanka, Sponsored by Ministry of Higher Education in Japan, 1991
A Study on the Impact of Foreign Investment on Domestic Industries in Thailand and Sri Lanka, Sponsored by the Ministry of Higher Education in Japan, 1992
A Survey on Industrial Structure and Regional Economic Policy in Southern Part of China, Sponsored by Ministry of Higher Education in Japan, 1992
A Study on the Role of Foreign Investment in Industrial Development in Sri Lanka and Thailand, Sponsored by the Ministry of Higher Education in Japan, 1993
A Study on Pattern of Foreign Investment in Shanghai and Cheandu in China, Sponsored by Ministry of Higher Education in Japan, 1994
A Survey on Role of Japan and China in Economic Development of East Asia, Sponsored by Ministry of Higher Education, 1994
A Study on Japanese Investment in Australian Tourist Industry, Sponsored by The Japan Foundation, La Trobe University, 1994/95
A Study on Sustainable Agricultural Development in Asia, Sponsored by The

Toyota Foundation, Tokyo, Japan, 1996

The Possibility of Using Japanese ODA in Alleviation of Rural Poverty in Asia: A Study on Japan Overseas Cooperation Volunteers, Sponsored by Ministry of Higher Education in Japan, 1999-2001
Japanese ODA to Samanelawewa Project in Sri Lanka, Sponsored by the Ministry of Higher Education in Japan, 2003-2005
Role of Japanese ODA in the Development of Human Capital in Sri Lanka, Sponsored by Ministry of Higher Education in Japan, 2008-2010
Development of Social Business and Poverty Alleviation: A Survey on Japanese Technical Assistance, Sponsored by Ministry of Higher Education in Japan, 2011-2013
Poverty Alleviation in Asia and Reduction of Labour Shortage in Japan under Technical Intern Training Programme, Sponsored by the Ministry of Higher Education in Japan, 2014-2018

CONTRIBUTION TO THE INTERNATIONALIZATION OF EDUCATION

More than 400 Japanese students at Saga University dispatched its linked universities in foreign countries (short-term/long-term) for their undergraduate and postgraduate studies during the period 2000-2016.
Arranged to sign an academic agreement (MOU) between Saga University and the University of Peradeniya in 1999. This contributes to accepting more than 100 Sri Lankan students from the University of Peradeniya to undergraduate and postgraduate studies at Saga University on Japanese government scholarships.
Conducted Joint Lectures at Saga University as well as in Asian-linked universities exchanging staff members of those universities.
Staff exchange program between linked universities.

CONTRIBUTION TO THE INTERNATIONALIZATION OF RESEARCH

Organizing a large number of research projects between Saga University and its linked universities in Asia and Europe.
The following international symposiums were held at Saga University to present the results of the joint research projects conducted on current economic problems faced by developing countries in Asia.

	Date	Theme of the Symposium	Participating countries
1	2004.12.28	The Trend of Economic Development in Asia	Sri Lanka, Thailand, China, Japan
2	2005.09.25	New Approaches to Foreign Aid and International Finance for Economic Development in Asia	Sri Lanka, Thailand, New Zealand, Sweeden, Japan
3	2007.09.30	The Labour Export-Import Policy and its Impact on Socioeconomic Development in Asia	Sri Lanka, Thailand, New Zealand, South Korea, Japan
4	2008.12.29	Human Resource Development for Economic Development in Asia: Retrospect and Prospective of Japanese Cooperation	Sri Lanka, Thailand, China, South Korea, Japan
5	2009.09.26	Food Security and Poverty Alleviation: Navigating Asian Paths from Global Food Crisis to a Safe and Secure World	Sri Lanka, Thailand, New Zealand, South Korea, Japan
6	2011.02.23	Human Resource Development in Japanese Universities: Strengths and Weaknesses	Sri Lanka, Thailand, New Zealand, South Korea, Japan
7	2012.01.26	Development of Social Business and Poverty Alleviation: Role of Japan’s Grass-roots Technical Cooperation	Sri Lanka, Thailand, South Korea, Japan
8	2014.01.15	The Shift of Global Economic Power from West to Asia	Sri Lanka, Thailand, New Zealand, South Korea, Italia, Japan
9	2014.11.26	The Technical Intern Training Programme: Can it Reduce Labor Shortage in Japan and Boost Economic Development in Asia?	Sri Lanka, Thailand, Indonesia, China, Japan
10	2015.10.23	Human Capital and Economic Development: The Experience of Asia	Sri Lanka, Thailand, Indonesia, China, South Korea, New Zealand, Czech Rep., Japan
11	2017.01.23	Economic Development in Asia and Foreign Workers in Japan: Current Situation and Challenges	Sri Lanka, Thailand, New Zealand, South Korea, China, Japan

The following symposium, called “Nikkanchu Kokusai Symposium (Japan-Korea-China International Symposium),” was commenced in 1990 by the Faculty of Economics at Saga University with the collaboration of Chonnam National University in South Korea, the Institute of World Economy and Politics, and the Chinese Academy of Social Sciences. Kasetsart University in Thailand and the University of Peradeniya have also joined the symposium since 2013. Now it is called the Asian Economic Symposium. I played a major role in organizing this symposium from 1990 to 2017.

No	Year	Theme	Host Country
1	1990.07.14	The Present and Future of the Asian Economy	Japan
2	1991.07.14	Impact and Response of Uruguay Round	Korea
3	1992.07.04	Management Ethics and Economic Development	Japan
4	1993.07.08	The Role of Region and Formation of Economic Zones in China	Korea
5	1994.07.03	The Agricultural Problems under Open Market Policy	Japan
6	1995.11.03	Efficient Management Strategies of Local Government towards Globalization	Korea
7	1996.07.27	Promotion of Venture Business for Regional Development: Prospects of New Cooperation among Research, Government and Industries	Japan
8	1997.07.23	Cooperation of Asian Countries into Twenty-First Century in Free Market, Free Labour Market and Labour Migration.	Korea
9	1998.08.27	Problems of Financial Market under High Competition: Relationship with Economic Growth Policy	Japan
10	1999.10.14	Quality of Living under New Politics	Korea
11	2000.10.06	Regional Economy and Revolution of Information Technology	Japan
12	2001.11.01	Current Issues Regarding Regional Economy	Korea
13	2002.09.28	Impact of WTO on Asian Economy	Japan
14	2003.10.24	Regional Development in Political, Economic, and Cultural Perspectives	China
15	2004.10.29	Regional Development in East Asian Countries	Korea
16	2006.11.25	Labour Migration, Technology Transfer, and Economic Development in Asia	Japan
17	2007.09.27	Economic and Social Development Model of East Asia	China
18	2008.10.30	Local Issues in Globalization	Korea
19	2009.11.28	Social and Economic Dimension of the Global Economic Crisis: Implications for Asian Countries	Japan
20	2010.11.20	How East Asian Countries Handle the Financial Crisis: From the Perspective of Economic and Social Policies	China
21	2011.11.17	The Issues and Strategies for Regional Economy and Development in East Asia	Korea
22	2012.11.14	Food Safety, Food Security and Globalization in Asia: TPP and FTA	Japan
23	2013.10.25	Social and Economic Dimensions of Trade Liberalization and Economic Integration: Implications for East Asian Countries	Thailand
24	2014.10.25	Economic Liberalization and Creative Innovation in East Asian Countries	Korea
25	2015.10.23	Human Capital and Economic Development: The Experience of Asia	Japan
26	2016.9.19	Emerging Asia: Opportunities and Challenges for Inclusive Growth	Sri Lanka
27	2017.11.18	Inclusive Growth and Structural Reform: The Experience of Asia	China

OTHER MAJOR WORKS:

Implementer of the First Model Export Production Village (Dambadeniya EPV Co. Ltd.) in Sri Lanka, 1981
Member of the Screening Committee of the Toyota Research Grants for 1994 and 1998
Member of the following joint research works granted by the Ministry of Higher Education in Japan:

Problem of Illegal Foreign Workers in Japan, Ryukoku University, Kyoto, 1990-1992
Pattern on Economic Development and Japanese Co-operation in Southeast Asia, Hiroshima University of Economics, Hiroshima, 1991-1993
The Economic Role of Japan and China in East Asia, Faculty of Economics, Saga University, 1992-1994
Participatory Rural Development through Mobilization of Local Resources in Sri Lanka, JICA Project, Ministry of Foreign Affairs, 1999-2001
Role of ODA in Alleviation of Rural Poverty in Asia, Faculty of Economics, Saga University, 1998-2001
Monitor: West Japan Newspaper (Nishi Nihon Shinbun), 2000-2001
External Examiner of PhD Thesis: Auckland University in New Zealand; Ryukoku University in Kyoto, Japan; and Kagoshima University in Japan

Initiator of the Agreement on Academic Cooperation and Exchange between Saga University, Japan, and the University of Peradeniya, Sri Lanka in 2004.
Founder of the “Sri Lanka-Japan Study Center” at the University of Peradeniya, 2013.
Sign an agreement with the University of Peradeniya, Sri Lanka (2015) and Kasetsart University in Thailand (2012) to become new member universities of the Asia Symposium.
Yamazaki Naoko and I established a foundation named, Yamazaki Kyomi Scholarship Foundation in 2002 to help Sri Lankan children, particularly in the remote areas of Sri Lanka. Under this programme, we have given a large number of scholarships to high school students at Ambalantota Maha Vidyalaya and Dutugamunu Maha Vidyalaya in Sri Lanka until 2015.
I worked as a leader with Sri Lankan students at Saga University and people in Japan to build a Modern Two-story Library at the Tsunami-Effected Ambalantota High School in southern Sri Lanka, in 2006.
I worked as a main actor of the Saga-Lanka Friendship Association in Japan to build a Saga-Lanka Fureai Auditorium at Ambalantota High School in southern Sri Lanka, in 2010.
Donation of schoolbooks and library equipment worth the sum of Rs. 600,000.00 to Yudaganawa Primary School and Dutugamunu Maha Vidyalaya, 2022
Donation of schoolbooks worth the sum of Rs. 250,000.00 to Yudaganawa Primary School, 2022

NEWSPAPER ARTICLES　

Model Export Village Brings Farmers into Export Trade, The Ceylon Daily News, July 13, 1981 (English)
Culture Shock, Toshoku News, No. 281, March 1, 1985 (Japanese)
Marriage Ceremony, Ryukoku News, July 1985, (Japanese)
Marriage Ceremony, Kyoto Newspaper, July 29, 1985, (Japanese)
Meeting with Ikemoto Mayor in Kyoto, Rakunan Time, December 12, 1986, (Japanese)
What Economic Development Bring, Ryukoku Newspaper, January 12, 1987, (Japanese)
Four Foreign Teachers Appointed to Saga University, Nishi Nihon Newspaper, April 24, 1989, (Japanese)
Me and this Town: Hello from Countries Around the World, Asahi Newspaper, October 12, 1989, (Japanese)
An International Exchange Programme that Expands the Circle of Friendship, Saga Newspaper, October 26, 1989, (Japanese)
For the People of Asia, Honganji Newspaper, April 1, 1990, (Japanese)
Lecturers from an Asian Perspectives: Sri Lankan Researcher became an Associate Professor at Saga University, Saga Newspaper, May 9, 1990, (Japanese)
Liberalization of Imports Reduces National Food Security: Effect on Food Situation in Asia, Yomiuri Newspaper, June 13, 1990, (Japanese)
Symposium on Asian Rice Culture, Nishi Nihon Newspaper, June 22, 1990, (Japanese)
International Conference on Let’s Deepen Solidarity in Asia: Call for Grassroots Exchange, Nishi Nihon Newspaper, June 24, 1990, (Japanese)
Taue Uta (rice-Planting-Song) Asia Festiva, 1990, Saga Newspaper, June 24, 1990, (Japanese)
Asian Rice Planting Song: Nishiarita Town Festival, Saga Newspaper, June 25, 1990, (Japanese)
Singing Voice from Ten Countries in Asian Region: Enliven the Spirit of Rice Cultivation, Nishi Nihon Newspaper, June 25, 1990, (Japanese)
Speech at the 1990 General Meeting of the Saga International Student Exchange Promotion Council, International Communication News, Saga International Student Exchange Council, Vol. 2, 1990, (Japanese)
Understanding Reality: Japan Image, Saga Newspaper, January 1, 1991, (Japanese)
Let’s Learn about Foreign Countries, Saga Newspaper, March 3, 1991, (Japanese)
Surprised by the Lack of Interest in Elections, Yomiuri Newspaper, April 6, 1991, (Japanese)
Recommendation of Saga Studies, Saga Newspaper, November 9, 1991, (Japanese)
Opening of Rice Market in Japan: Decline of Self-sufficiency Rate, Saga Newspaper, December 7, 1991, (Japanese)
Life, Society and Asia, Mainichi Newspaper, May 4, 1992, (Japan)
Recognition of Each Other’s Culture: Constructive Cooperation, Saga Newspaper, March 23, 1993, (Japanese)
Academic Exchange and Racial Prejudice, Asahi Newspaper, November 19, 1993, (Japanese)
A Sri Lankan person becomes a professor from a Japanese national university, Lakbima Newspaper, March 16, 1997 (Sri Lanka), (Japanese)
Aims of an Open University, Saga Newspaper, June 2, 1998 (Japan), (Japanese)
Saga University Explores, Creates, and Opens up to Asia: The Future Stars from Here, Yomiuri Newspaper, March 21, 1999 (Japanese)
English Book on Asian Agriculture: Communicating Food Issues to the World, Saga Newspaper, August 23, 2000, (Japanese)
Japan-Centered Asia: Perspectives and Recommendations, Nishi Nihon Newspaper, January 23, 2001, (Japanese)
Quality of University Reform, Nishi Nihon Newspaper, April 24, 2001, (Japanese)
Talking about the future starting now: Nishi Nihon Forum 21, Nishi Nihon Newspaper, June 2, 2001, (Japanese)
From Reaffirming the Uniqueness of Kyushu: Nishi Nihon Forum 21, Nishi Nihon Newspaper, June 4, 2001, (Japanese)
Information for Reform: Perspective Proposal, Nishi Nihon Newspaper, June 26, 2001, (Japanese)
Welfare and Economic Development, Nishi Nihon Newspaper, September 25, 2001, (Japanese)
Emergency Gathering due to Terrorist Attacks in the US: Discussion among 60 Muslims in Saga City, Saga Newspaper, October 22, 2001 (Japanese)
Exploring the New Shape of Kyushu, Nishi Nihon Newspaper, January 1, 2002, (Japanese)
Future of Saga: Saga People and Foreigners Forum, Saga Newspaper, January 5, 2002 (Japanese)
Internationalization and Local Support: Construction of Housing Exclusively for International Students, Nishi Nihon Newspaper, February 6, 2002, (Japanese)
Importance of Internationalization of Universities: Improving the Quality of Both Entrance and Graduation, Nishi Nihon Newspaper, February 26, 2002, (Japanese)
A Movie that Spread Empathy: Hong Kong of the Rising Sun, Saga Newspaper, May 6, 2002, (Japanese)
Work Hard on Your Studies with Peace of Mind: Construction of a Dormitory for International Students with Private Funds, Saga Newspaper, May 6, 2002, (Japanese)
Symposium on International Students’ Education in Japan, Saga Newspaper, June 2, 2002, (Japanese)
The Difference between Two Countries that were in the Same Place 50 years Ago, Divaina Newspaper, October 20, 2002 (Shinhala)
The Beginning of Japan’s Early Modern Era, Saga Newspaper October 8, 2003 (Japanese)
The Development of Asia and its Impact on Kyushu, Nishi Nihon Newspaper, April 22, 2004, (Japanese)
Fundraising Activities of International Students and Saga People for the Construction of a School in a Tsunami-Affected Area in Sri Lanka, Saga Newspaper, February 4, 2005 (Japanese)
Suppressing Dialogue by Considering Only Economic Factors, Divaina, May 8, 2005 (Shinhala)
2^nd International Conference on Business Management in the Third World, Annual Conference of the Faculty of Management Studies & Commerce, University of Sri Jayewardenepura, Sri Lanka, 10^th March 2005, Gall Face Hotel, Colombo, Daily News, March 10, 2005 (English)
Learning in English is also a reason for economic backwardness, Divaina, March 27, 2005, (Shinhala)
Professor at Saga University from Sri Lanka: Rebuilding a School in Home Country, Nishi Nihon Newspaper, April 18, 2005, (Japanese)
Lost Opportunities: Lessons from Japan, Nishi Nihon Newspaper, April 25, 2005, (Japanese)
Suppressing Development by Considering Only Economic Factors, Divaina Sunday Newspaper, May 8, 2005, (Shinhala)
Book Published in Sri Lanka Considering Japan’s Post-war Reconstruction Experience, Saga Newspaper, June 22, 2005, (Japanese)
Piyadasa Ratnayake: Domestic and International Economic Development through Human Resource Development, Visit of Research Lab in Saga University, July 7, 2005 (Japanese)
Well-Researched Book on Sri Lanka’s Economy, Daily News, July 29, 2005, (English)
Support for Tsunami Damaged Sri Lanka: Friendship Proof Library, Saga Newspaper, March 28, 2006, (Japanese)
Relationship between Japan and Sri Lanka, Saga Newspaper, April 17, 2006, (Japanese)
Donation of Children Library to Sri Lanka, Saga Newspaper, April 18, 2006, (Japanese)
Donation of the Library from Saga University to Sunami-Affected Malpeththawa School in Sri Lanka, Divaina Newspaper, April 20, 2006 (Shinhala)
Developing Friendship with Sri Lanka: Donation of the Library, Asahi Newspaper, May 17, 2006 (Japanese)
Sri Lanka: Introduction to History and Daily Life, Saga Newspaper, May 22, 2006, (Japanese)
People Interview: Prof. Piyadasa Ratnayake, Saga University, Tottotto SAGA, Vol.29 December 2006 (Japanese)
Time for Unified Action in Kyushu: Efficiency Alone is not Enough to Match the Reality of Life, Nishi Nihon Newspaper, August 6, 2006, (Japanese)
Provision of Disaster Prevention Knowledge to Sri Lankan School Teachers, Nishi Nihon Newspaper, August 17, 2007, (Japanese)
Disaster Prevention Training Programme in Saga for Sri Lankans, Nishi Nihon Newspaper, October 23, 2007, (Japanese)
Donation of Arita Ware Kaleidoscope to High School in Sri Lanka, Saga Newspaper, October 29, 2007 (Japanese)
Transfer of Research Outcomes of Universities to Regional Development: The Key is Collaboration with Companies and Local Governments, Nishi Nihon Newspaper, August 4, 2008, (Japanese)
International Symposium on Economic Development in Asia, Saga Newspaper, December 16, 2008 (Japanese)
Survey on Reconstruction Support for Tsunami-Affected Regions in Sri Lanka, Asahi Newspaper, January 12, 2009, (Japanese)
Why is the Sri Lankan Economy not developing? Lankadeepa Newspaper, February 25, 2009, (Shinhala)
Economic Development is not Stopped because of the War, Dinamina Newspaper, March 11, 2009, (Shinhala)
An Introduction to Sri Lankan New Year, Saga Newspaper, April 21, 2009, (Japanese)
International Symposium on Food Crisis, Saga Newspaper, September 17, 2009, (Japanese)
International Symposium on Food Crisis: Cooperation Beyond National Boundaries, Saga Newspaper, September 26, 2009, (Japanese)
From Knowing Tsunami, Yomiuri Newspaper, November 16, 2009, (Japanese)
International Symposium on Global Economic Crisis, Saga Newspaper, November 28, 2009, (Japanese)
Donation of Auditorium from Japan to Tsunami Affected Area in Sri Lanka, Saga Newspaper, March 13, 2010, (Japanese)
International Students at Saga University: Japan Language Competition, Nishi Nihon Newspaper, August 13, 2010, (Japanese)
Enjoy Sri Lankan Tea Party: Charity Party at Saga University, Saga Newspaper, November 28, 2010, (Japanese)
A Gift from Japan to Ambalantota Maha Vidyalaya, Lankadeepa Newspaper, February 13, 2010, (Shinhala)
International Symposium on Human Resource Development, Saga Newspaper, February 18, 2011, (Japanese)
Thinking about Issues in Teaching International Students, Nishi Nihon Newspaper, February 26, 2011, (Japanese)
Charity Event of Sri Lankan Students in Saga University: Support for the Victims of Tsunami Disaster in Sri Lanka, Yomiuri Newspaper, April 22, 2011, (Japanese)
Home Country Curry and New Year Dishes: A Charity Event of Sri Lankan Students for Helping Tsunami Victims in Home Country, Saga Newspaper, April 22, 2011, (Japanese)
International Symposium on Exchange of Opinions on Food Security, Nishi Nihon Newspaper, January 17, 2012, (Japanese)
International Symposium on TPP and Food Security, Saga Newspaper, January 17, 2012, (Japanese)
International Symposium on Social Business and Poverty Alleviation, Saga Newspaper, January 24, 2012, (Japanese)
Saga as Seen through the Eyes of Foreigners, Saga no Satokami Bunkashi, Vol. 20, 2008 (Japanese)
Japanese Universities and their Contribution to Asia: Research by Prof. Ratnayake and Others, Saga Newspaper, March 19, 2013, (Japanese)
Tsunami Victims’ Appreciation, Saga Newspaper, April 14, 2013, (Japan)
A Bridge for International Exchange: Sri Lankan Professor at Saga University, Piyadasa Ratnayake, Saga Newspaper, July 12, 2013, (Japanese)
Contribution to Internationalization of Saga University: Three Foreign Professors Appointed as Ambassadors of Saga University, Saga Newspaper, January 17, 2014, (Japanese)
Let’s Enjoy the Sri Lankan New Year, Saga Newspaper, April 13, 2014, (Japanese)
Eliminating Discrimination through Education: Current Situation in India, Saga Newspaper, May 31, 2014, (Japanese)
Provision of a Place for Worship: International Buddhist Exchange Association, Saga Newspaper, November 6, 2014, (Japanese)
UNICEF Lecture: Education, Caste and Women in India, Saga UNICEF Association, May 24, 2014 (Japanese)
Retirement of Professor Ratnayake: 30 Years of Asian Economic Research at Saga University”, Saga Newspaper, March 31, 2017, (Japanese)
Social Gathering of Buddhist International Students at Ganshoji Temple, Saga Newspaper, May 14, 2017, (Japanese)
The Reality of Skills Do Not Cross the Ocean, Asahi Newspaper, November 20, 2017 (Japanese)
Discussion Begins with Mutual Understanding, Saga Newspaper, December 10, 2017, (Japanese)
Cultivating Guava Without Polishing Employments: Illusion of Technical Intern Training, Asahi Newspaper, December 14, 2017 (Part One), (Japanese)
Cultivating Guava Without Polishing Employments: Illusion of Technical Intern Training, Asahi Newspaper, December 16, 2017, (Part Two), (Japanese)
Contribution of Technical Intern Training to Alleviation Poverty in Asia, Saga Newspaper, May 9, 2018, (Japanese)
Contributing to Poverty Alleviation in Asia: Professor Emeritus at Saga University Gives Lecture on Foreign Technical Intern Training, Saga Newspaper, June 7, 2018, (Japanese)
Benefits of Foreign Technical Intern Trainees: Piyadasa Ratnayake, Professor Emeritus at Saga University, Nikkan Kogyo Newspaper, September 3, 2018, (Japanese)
Saga Prefecture International Exchange Association 30^th Anniversary Interview, https://www.spira.or.jp/hello-saga/kinenshi, 2020 (Japanese)
Special Report: Benefits of Foreign Technical Intern Trainees: Piyadasa Ratnayake, Professor Emeritus at Saga University, Kaigai Toushi Jouho (Foreign Investment Information Magazine), IM Japan, February 2021 (Japanese)
Intern Training Programme: How to See it from Asia, Asahi Newspaper, February 13, 2021, (Japanese)
A Japan Approach to International Cooperation, Japan’s Modernization Studies, Resource Person, Sri Lanka Japan Study Center, University of Peradeniya, February 16, 2022 (English)
International Students’ Light Up Festival: Ganshoji Temple, Saga Newspaper, May 17, 2022, (Japanese)
You Can’t Learn Skills in Japan: Interns are Labor Force; They Go to Japan for Earning Money, Asahi Newspaper, March 26, 2023, (Japanese)
What Technical Intern Trainees Gained from Japan: What We Learned from a Survey Conducted by a Professor from Sri Lanka, Asahi Newspaper Digital Version, April 18, 2023 (Japanese)