Conference Presentation
- Urban Ethnicity in Japan: From Fieldwork on Urban Lower Class, A Joint Seminar on Trend in Urban Sociology, sponsored by Japanese Association of Urban Sociology and Chinese University, Hong Kong, 1991.
- Toward a Typology of Yoseba in Japan and Squatter in the Philippines: From Fieldwork of the Urban Lowest Society, Joint Symposium of International Sociological Association, Kurashiki, 1992.
- Ethos of a Metal Craftsman in Early Twentieth Century in Japan, The 64th Annual Meeting, Pacific Sociological Association, Portland, 1993.
- A Study of Indigenous Development through Life History of Craftman, reported with Shōgo Koyano, Deutsch-Japanishe Gesellschaft fūr Sozialwissenschaftene.V.Dritte Tagung, Kobe, 1994
- Violation of Academic Freedom: A Case of Hiroshima Shudo University, Japanese Association for Language Teaching, The 22nd Annual International Conference, Hiroshima, 1996
- Hiroshima's Social Problems, International Sociological Association, Hiroshima, 1998
- Underclass in Japan: The Case of Yoseba, International Sociological Association,
Hiroshima, 1996
- Underclass in Japan: Homeless Men and Winter Struggle, The 4th Conference of Asian Pacific Sociological Association, Kobe, 2000
- Globalization and Homelessness: A Comparative Study, Forum in Church and Social Issues, Manila: Ateneo de Manila University, 2007
- Street Homeless in Metro Manila: Pathway to the Street, Definition and Politics on Street, The 11th Conference of Asia Pacific Sociological Association, Manila: Ateneo de Manila University, 2012
- Toward to Construction of Theoretical Hypothesis, International Mini-Symposium, Structure and Transformation of Urban Bottom of Metro Manila, First Report, Tokyo: Tokyo Classroom of Hokkaido University, 2015
Others (presented in Japanese)
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