1. "The History of Mexican Nuclear Physics," Noon Latin American Lunchtime Seminar, Dec. 1982.

2. "Latin American Nuclear Programs: A Comparison of the Brazilian and the Argentinean Cases," Annual Meeting of the Southwestern Social Science Association, Houston, Texas, March 1983.

3. "For a Third World Renaissance," Third World Conference, Chicago, IL, March 1983.

4. "A Latin American Perspective on the Nuclear Arms Race," Third World Conference, Chicago, March 1983.

5. "The United States Reaction to Nuclear Programs in Latin America: A Comparison of the Mexican and the Brazilian Cases," Great Lakes History Conference, Grand Rapids, Michigan, April 1983.

6. "Theory of Scientific Productivity," Marxist Scholars' Conference in Honour of the Centenary of Marx's Death, University of Cincinnati, April 1983.

7. "The Teaching of the History of Science and Technology in Latin America," Interdisciplinary Conference on Latin America and Education, Tulane University, Louisiana, April 1983.

8. "What Kautsky Had to Say About Christianity," Marxism and Religion Conference, University of Northern Iowa, Cedar Falls, Iowa, Oct. 1984.

9. "The Latin American Reaction to Hiroshima and Nagasaki: Argentina," Midwest Junto for the History of Science, University of Minnesota, Minneapolis, April 1985.

10. "Making Choices About the Military Use of Space: The Conversion From the Military Industrial Complex to a Space, but Civilian, Industrial Complex," 1985 Student Pugwash International Conference, Princeton University, New Jersey, June, 1985.

11. "The History of Sciences and the Individual's Place in History: A Few Points," XVII International Congress of History of Science, University of California, Berkeley, Aug. 1985.

12. "The Latin American Reactions to the Atomic Bombings of Hiroshima and Nagasaki: The Case of Mexico," Midwest Association for Latin American Studies, University of Missouri at Columbia, Sep. 1985.

13. "The Brazilian Reactions to the First Use of Atomic Energy," History of Science Society Annual Meeting, Bloomington, Indiana, Oct. 1985.

14. "The Survival of the Weaker Nation in a Multipolar World: The Gregory Campbell Model," Diplomatic History Workshop, University of Chicago, Dec. 1985.

15. "Masks Without Faces: The Ideology of Natural Destruction," Globala Miljoproblem och Internationell Miljovard Seminar, University of Lund, March 1988.

16. "El Nuevo Renacimiento: El Pasado en el Futuro de Latino America," Latinamerika Seminariet, Sociologiska Institutionen, University of Lund, May 1988.

17. "Comparacao Entre of Programas Nucleares do Brasil e da Argentina no Periodo 1945-1955 e Implicacoes para as Relacoes Diplomaticas," Seminario. Curso de Pos Graduacao em Fisico-Quimica, Fisica e Quimica. Centro de Ciencias Fisicas e Matematicas. Universidade Federal de Santa Catarina, Florianopolis, July 1988.

18. "Uma Comparacao Entre os Programas Nucleares Brasileiro e Argentino, 1945-1955," Segundo Congresso Latino Americano de Historia da Ciencia e Tecnologia, Sao Paulo, July 1988.

19. "Relacao Entre Ciencia e Economia e Seu Impacto Sobre as Relacoes Diplomaticas," Seminario. Curso de Pos Graduacao em Historia da Ciencia. Departamento de Historia. Univ. Estadual de Sao Paulo, Aug. 1988.

20. "Por que o Sincrotron? Licoes da Historia da Ciencia e da Tecnologia," Seminario. Laboratorio Nacional de Luz Sincrotron, LNSL. CNPq., Campinas, Aug. 1988.

21. "DEWS-TECHNOLOGY TRANSFER. Database on East-West-South Technology Transfer," Technology Transfer as a Factor of Acceleration of Social Development, (with C. Brundenius and E. Mendoza) Politechnika Poznanska. Instytut Nauk Ekonomicznych I Spolecznych, Poland, Feb. 1989.

22. "Technology Debates and Ideology: A Description of a Research Project and Framework," (with Aant Elzinga and Mikael Hard) TEMA-T, Linkoping University, March 1989.

23. "Technology and Development: A Course Structure," Politechnika Poznanska. Instytut Nauk Ekonomicznych I Spolecznych, Poland, April 1989.

24. "Impact of the Western Paradigm: Nuclear Technology Transfer to Developing Countries," Globala Miljo-problem och Internationell Miljovard Seminar, University of Lund, April 1989.

25. "Brazilians Debate Their Nuclear Future, 1945-1955," Theory of Science, Goteborg University, May 1989.

26. "The Fall of the Amazon," Institute for Environmental and Energy System Studies. University of Lund, Oct. 1989.

27. "The Impact of New Technologies on Foreign Debt: Lessons From History," AIESEC Katowice Intertrade 90. Katowice, Poland, March 1990.

28. "Learning From Experience in Science Policy: A Comparison of Biotechnology and Nuclear Programs in Brazil," Sciences et Empires. Histoire Comparative des Echanges Scientifiques. Centre National de la Recherche Scientifique, Paris, April 1990.

29. "The Social and Environmental Impact of Technology Transfer," Development Co-operation and Environmental Concern. Institute for Environmental and Energy Systems Studies. Institute of Science and Technology. University of Lund, April 1990.

30. "Science Policy and Technology Transfer," EMBRAPA - Empresa Brasileira de Pesquisas Agricolas, Brasilia, Brasil, May 1990.

31. "Biotechnology in Brazil - Historical Considerations," University of Budapest, Hungary, July 1990.

32. "Biotechnology in Brazil - Recent Situation," University of Budapest, Hungary, July 1990.

33. "The Amazonian Crisis: Ecology and Development," Environmental Issues and Sustainable Development. Institute for Environmental and Energy System Studies. University of Lund, Feb. 1991.

34. "Research Agenda for a de facto Security," Academy of Sciences of Estland, Tallinn, Estland, June 1991.

35. "The Interface Between University and Industry: The Case of Brazilian Biotechnology Science Parks," Central European University, Praha, Czech Republic, Sept. 1991.

36. "The Brazilian Way of Perceiving Nature: The 1925 Relativity Debate," Conference in Honor of A. Debus, University of Chicago, Oct. 1991.

37. "The Financing of Biotechnology in Developing Countries. The Case of the Brazilian FINEP," Technical University of Denmark, Copenhagen, Nov. 1991.

38. "FIAT i tre lander," AUTUMN Bilgruppen Workshop om Bilism, University of Gotheburg, Nov. 1991.

39. "Military Technology in the Middle Ages: A Lecture for Ten Years Old," Copenhagen International Junior School, Danmark, Dec. 1991.

40. "Biotechnology Applied to Agriculture: The Case of EMBRAPA, The Brazilian Company for Agricultural and Livestock Research," Research Policy Institute, Lund, Jan. 1992.

41. "Environmental Problems in Brazil," Department of Environmental and Energy Systems Studies. Institute of Science and Technology. University of Lund, Feb. 1992.

42. "Herbert Butterfield: A Christian Historian of Science," Department of History. Universidade Federal de Santa Catarina, Florianopolis, Brazil, Feb. 1992.

43. "The Origins of Brazilian Nuclear Policy," Berghof-Institut Fur Friedens- und Konfliktforschung, Berlin, June 1992.

44. "Robert Jungk and the Tension Between Community and the State: From Debate to Action in the 1950's," Berghof-Institut Fur Friedens- und Konfliktforschung, Berlin, June 1992. Also presented at 4S/EASST Conference Aug. 1992.

45. "Environment in Brazil: Global and Local Issues," International Environmental Summer School. Department of Environmental and Energy Systems Studies. Institute of Science and Technology. University of Lund, July 1992.

46. "A Cidadania ao Longo da Historia," Associacao Nacional de Professores Universitarios de Historia, ANPUH, IV Congress, Florianopolis, Brazil, Sept. 1992.

47. "University Industry Liaison Offices: The Swedish Experience," International Seminar on Technology Transfer, SEBRAE and IEL, Salvador, Brazil, Sep. 1992.

48. "A Cidadania, a Economia Global e os Movimentos Regionalistas," UNIPLAC - Fundacao das Escolas Unidas do Planalto Catarinense, Lages, Brazil, Oct. 1992.

49. "As Mudancas no Leste da Europa - Perspectivas Historicas," Secretaria Municipal da Educacao, Florianopolis, Brazil, Nov. 1992.

50. "Research in the European Community: Perspectives and Problems," Internationalisering, Umea University, Jan. 1993.

51. "A Experiencia Europeia," Seminario Sobre Formas de Governo, Departamento de Historia, Universidade Federal de Santa Catarina, Florianopolis, April 1993.

52. "Metodos na Pesquisa Historica," Departamento de Sociologia, Pos-Graduacao, Universidade Federal de Santa Catarina, Florianopolis, May 1993.

53. "Avaliando Universidades: Comparando o Brazil com a Suecia," Faculdade de Educacao, Universidade Estadual de Santa Catarina, Florianopolis, May 1993.

54. "A Globalizacao da Economia," Departamento de Economia, Universidade Federal de Santa Catarina, Florianopolis, June 1993.

55. "A Pesquisa em Historia," Departamento de Ciencias Sociais, Universidade Federal de Santa Catarina, Florianopolis, June 1993.

56. "Cavaleiros, Contos de Fadas, Reis e Princesas: Uma Historia da Idade Media para Criancas," Escola Autonomia, Florianopolis, June 1993.

57. "Bohr, Complementaridade e a Sociedade Dinamarquesa, 1915-1930," Departamento de Fisica, Universidade Federal de Santa Catarina, Florianopolis, June 1993.

58. "The Debate at the United Nations Atomic Energy Commission, 1945-1947," Theory of Science, University of Gotheburg, Sweden, Aug. 1993.

59 "Ensinado Historia via Redes," III Congresso Internacional de Historia e Computacao, Universidade Catolica de Salvador, Bahia, Nov. 1993.

60. "Nuclear Technology Debates," Theory of Science, University of Goteborg, Sweden, April 1994.

61. "The European University on the Environment," UNIKUM, Umea University, Sweden, April 1994.

62. "O Compromisso Social da FAED," Centro de Ciencias da Educacao, Universidade Estadual de Santa Catarina, Brazil, May 1994.

63. "A Volta do Fundamentalismo," Religiao, Historia e Imaginario, ANPUH/SC, Florianopolis, June 1994.

64. "Debating the Nuclear," History of Ideas, Umea University, Jan. 1995.

65. "EU-fonder och Programomraden," Europa Seminar for Turist- och Reseindustri, Stiftelsen Norrland Turism, Lycksele, Sweden, May 1995.

66. "Business Plan Development and Evaluation: Market Analysis Relationships with Environmental Actors, Best Practices Concerning Resources and Skills both Internal and External to the Enterprise," The Environment and the Creation of New Enterprises in Europe, European University on Environment, Rome, Italy, June 1995.

67. "Uminova Center, Environment and Europe," Sustainable Enterprise in Action - Partnerships in Progress - Official Opening of the Tweed Horizons Centre for Sustainable Technology - Scottish Borders, Nov. 1995.

68. "Parques de Ciencia - Paradigma Administrativo e Significado Economico," Departamento de Ciencias Economicas, Centro Socio-Economico, UFSC, Florianopolis, May 1996.

69. "Alliances for Environmentally Friendly Projects and Services," Utopies et Realites du Developpement Urbain Durable - Quelles Alliances Nouvelles Entre Economie, Ecologie et Democratie Pour les Petites et Moyennes Villes Europpeennes, European University on Environment, Centro Richerche di Monforte d'Alba, Italy, Sep. 1996.

70. "Northern Swedish Perspectives," Innovations for the Improvement of the Urban Environment, European Foundation for the Improvement of Living and Working Conditions, Dublin, Ireland, Nov. 1996.

71. "Inventing Science," IRF Seminar, Swedish Institute of Space Physics, Kiruna, Sweden, Mar. 1997.

72. "Teoria de Redes," LABSAD Seminario, Laboratorio de Sistemas de Apoio a Decisao, Departamento de Engenharia de Producao e Sistemas, Universidade Federal de Santa Catarina, Florianopolis, Brazil, April 1997.

73. "Redes e Marketing" LABSAD Seminario, Laboratorio de Sistemas de Apoio a Decisao, Departamento de Engenharia de Producao e Sistemas, Universidade Federal de Santa Catarina, Florianopolis, Brazil, June 1997.

74. "Construindo Redes" LABSAD Seminario,Laboratorio de Sistemas de Apoio a Decisao, Departamento de Engenharia de Producao e Sistemas, Universidade Federal de Santa Catarina, Florianopolis, Brazil, July 1997.

75. "Posturas Epistemologicas e Pratica Cientifica",Filosofia e Historia das Ciencias: I Encontro do Cone Sul, UFRS. Porto Alegre, Brazil, May 1998.

76. "A Verificacao da Teoria da Relatividade", V Congresso Latino-Americano de Historia das Ciencias e da Tecnologia, Rio de Janeiro, July 1998.

77. "Escravidao, a Dimensao Global das Drogas" Coordenadoria de Prevencao ao Uso Indevido de Drogas , Prefeitura da Cidade do Rio de Janeiro, Brazil, October 1998.

78. "From the Treatment of the La Hague Case to Subjects of Energy", The media and Sustainable Development, European University on Envrionment, Brest European Meetings, 17-22 May 1999.

79. "Panorama Mundial da Prevencao, do Tratamento e da Repressao as Drogas", Coordenadoria de Prevencao ao Uso Indevido de Drogas , Prefeitura da Cidade do Rio de Janeiro, Brazil, May 2000.

80. "Ciencia e Literatura," Aula Inaugural do Curso de Letras, Univali - Universidade do Vale do Itajai - Centro de Educacao Superior IV, Itajai, Brazil, August 2000.

81. "The European Experience in Technology Transfer: The Case of the Innovation Relay Centres, IRC", CORENDE, Congreso Regional de Ensayos No Destructivos y Estructurales, Mar del Plata, Argentina, October 2000

82. "Transferencia de Conocimiento de la Universidad a la Industria", Universidad de Buenos Aires, Facultad de Ingenieria, Argentina, October 2000.

83. "The Swedish Experience in University-Industry Interfaces", CNEA - Atomic Energy Commission of Argentina, Buenos Aires, October 2000.

84. "A Experiencia Europeia em Transferencia de Tecnologia: Teoria e Realidade Pratica", COTEQ - ABENDE, Sao Paulo, August 2001.

85. "The Cabral-Dahab Science Park Management Paradigm applied to a Science Center", BIOFOCUS FOUNDATION - Swedish Royal Academy of Sciences, Stockholm, September 2001.

86. "Negociacao em Relacoes Internacionais", UNISUL - Curso de Relacoes Internacionais, Florianapolis, Santa Catarina, Brasil, October 2001.

87. "Managing the Human-Technology Interface in the Arctic and Sub-Arctic World", Joint EU-Russia-Canada-US Workshop. A Common Approach to Collaborative Technological Research for Arctic Development, Brussels, Belgium, October 2001.

88. "Best Practices in Science Park Organization: What Works and What Doesn't", International Conference on Social Inclusion, Innovation and the New Economy, Stockholm, NIWL/ALI, May 2002.

89. "The Risesi Project", IST Challenges to Sustainable Corporate Social Responsibility, Workshop organized by DGINFSO F4, European Commission, Brussels, Belgium,4 April 2003.

90. "IST and Poverty: Overcoming the Major Barrier to the Vision". "Roadmap Projects on Socio-economic Aspects/Sustainable Development", Workshop organized by DGINFSO F4, European Commission, Brussels, Belgium, 18 June 2003.

91. "Introduktion och Oppen Diskussion". Forestallning eller Fakta? Om bilder och myter kring arbetsloshet;. etnicitet och kon, Seminar organised by FoU-Centrum Soderhamn, Sweden 17 September 2003.

92. "How to Manage Science Parks - The Cabral Dahab Science Park Management Paradigm", Turku Science Park, Turku, Finland, 24 November 2003.

93. "The Health Challenge", Stockholm Challenge Award Global Forum - Seminars, Stockholm, Sweden, 12 May 2004.

94. "Developing a strategy for European research funding agencies" - Session Coordinator, Euroscience Open Forum 2004, Stockholm, Sweden, 27 August 2004.

95. "Learning from the history of the European Science Foundation", Euroscience Open Forum 2004, Stockholm, Sweden, 27 August 2004.

96."Leadership Transitions in Science Parks and Incubators - Problems and Challenges",  Turku Development Forum 2004, Turku, Finland, 2 September 2004.

97."Leadership Transitions in Science Parks and Incubators - Problems and Challenges",  Graduate School of Business, University of Arkansas, Fayteville, AK, USA, February 2005.

98."Custers, Innovation and Regional Growth - Policy Recommendations from a Network Perspective",  Tekpark Opening Conference, Northern Republic of Cyprus, October 2004.

99."Science Parks and Technology Business Incubators as the Interface for Defense-University-Industry Collaborations",  SSM-2005 International Defence Industry Conference, Ankara, Turkey, November 2005.

100."Research, Innovation and Regional Growth",  First Regional Innovation Forum - Regional Innovation Strategies, Mersin, Turkey, November 2005.

101. "The Health Challenge", Stockholm Challenge Award Global Forum - Seminars, Stockholm, Sweden, 12 May 2006.

102. “What is Wrong With Us? Barriers to Learning from the SARS Experience”, e-Health Forum 2006, Hong Kong, China, September 2006.

103. IFIP. I3E 2006 COnference, Programme Co-Chair, Turku, Finland, October 2006.

104. "E-Inclusion and Lost Markets: Virtual Divides in the Real World”, Key Note Speaker,

IFIP I3E 2006 Conference, Turku, Finland, October 2006.

105. “QoE – Quality of Experience – From Concepts to Applications”, Key Note Speaker, IFIP I3E 2007 Conference, Wuhan, China, October 2007.