academic societies and international symposiums
March 19-21, 2004
- International Workshop in Hanoi, Viet Nam on “Forging Partnership: A Comparative Study of Institutional Responses to Nordic and Japanese Aid in Asia”
- Theme of the Presentation (Joint): Norway and Sri Lanka: Japanese and Nordic Aid in the Sri Lankan Conflict Resolution, Presented by Alf Morten Jerve and Piyadasa Ratnayake
September 17, 2004
- Business Seminar in Fukuoka organized by the Sri Lanka-Japan Economic Organization
- Theme of the Presentation: Sri Lanka’s Economic Relationship with Japan: Trade, Investment and Aid Relations in the last Five Decades
October 4, 2004
- [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, Fukuoka World Habitat Office, UN, 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」
October 28 -31, 2004
- China-Japan-Korea International Symposium at the Center for Regional Development, Chonnam National University, South Korea, Commentator for Prof. Zhang Yongtao’s paper on Socioeconomic Development in Three Major Regions in Jiangsu in China.
June 17-19, 2005
- International Workshop in Stockholm School of Economics, Sweden on “Forging Partnership: A Comparative Study of Institutional Responses to Nordic and Japanese Aid in Asia”
- Theme of the Presentation (Joint): Exploring ‘Ownership’ of Aid-funded Projects: A Comparative Study of Japanese, Norwegian and Swedish Project Aid to Sri Lanka
July 9, 2005
- Association of International Economics, Kyushu-Yamaguchi Area Research Meeting (Kokusai Keizai Gakkai, Kyushu Yamaguchi Chiku Kenkyukai)
- Theme of the Presentation: The Issues of ‘Ownership’ and ‘Partnership’ on the Effectiveness and Efficiency of Foreign Aid: The Experience of Japanese Assistance to Dental Faculty Project of University of Peradeniya in Sri Lanka
September 25, 2005
- Organizer of the International Symposium on New Approaches to Foreign Aid and International Finance for Economic Development in Asia held in Saga University
October 22, 2005
- East China Normal University, Shanghai, China, A Sustainable Approach towards Self-Reliant Rural Development: Lessons from Practice in Sri Lanka
November 25, 2006
International Workshop, The 16th Japan-Korea-China Joint Symposium on Labor Migration, Technology Transfer and Economic Development in Asia, Moderator and Commentator, Faculty of Economics, Saga University
March 15, 2007
Seminar on University Contribution to Economic Development: Lessons from Japan, University of Peradeniya, Sri Lanka
February 1, 2008:
Seminar on the Role of Informal Institutions in Economic Development: Experience of Japan, Department of Economics, University of Peradeniya, Sri Lanka
February 8, 2008:
Seminar on the Role of Informal Institutions in Economic Development: Experience of Japan, Faculty of Economics, Kasetsart university, Bangkok, Thailand
February 16, 2008:
Speech on the Internationalization Activities in Japan: Present and Future Perspective, Saga Shicho Koenkai, Hotel Hagakure, Saga
October 10, 2008:
International Labour Migration and Economic Development: Experience of Japan, Shimin Daigaku, Utsurattokan, Saga City, Saga
November 15, 2008:
Foreign Labors and Economic Development in Asia, Saga Minami Shokou Kaikan, Saga City
August 27, 28, 2009
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
October 17, 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（68th International Conference of Society of Japan International Economics）, (Hansamali Pitigala and Piyadasa Ratnayake)２００９年１０月１７日、中央大学多摩キャンパス
2010年10月2日（土）：
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」、法政大学多摩キャンパス
2011年2月23日：
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」、
2012年 1月26日 (木)：
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」
December 13, 2012：
Japanese Development Assistance for Capacity Building of Social Businesses in Sri Lanka’, Saliya De Silva and Piyadasa Ratnayake, The 9th International NAPSIPAG Conference 2012 on “Development Challenges in the Asia Pacific: Millennium Development Goals and Beyond”, , Colombo, Sri Lanka
March 29-31, 2013：
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
June 9, 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
September 25-26, 2013:
Lessons from Japanese Overseas Cooperation Volunteers for Social Businesses Development in Sri Lanka, International Conference on Sustainable Enterprises of the Future Conference, Robbert Morris University, Pennsylvania, USA