Time-varying linear processes: application to the population dynamics of tsetse flies, 14th ILAS Conference, Shanghai, 16-20 July, 2007.

An individual-based model for the spread of heterosexual HIV; Thirteen years of African trypanosomiasis modeling: A tribute to JP Gouteux (1948-2006). Talks given as Invited Speaker at the EPIMATH workshop on "Mathematical and Computer Modeling of Infectious Diseases". Brazzaville, Congo Brazzaville, 5-10 March 2007.

A density-dependent model of the population dynamics of tse-tse flies: application to trapping experiements. Invited speaker at the international Biomathematics conference organised by the African Network for Development-Related Mathematics - Brazzaville, Congo Brazzaville, 10-15 december 2004.

A density-dependent model of the population dynamics of tse-tse flies: application to trapping experiements. Invited speaker at Fifth Annual Meeting of the African Network for Development-Related Mathematics - Dakar, 2-8 August 2004. Also, workshop to train local public health officials in the use of the UNAIDS software for national HIV/AIDS projections.

A linear migration model for the diffusion of euro coins. Invited speaker, Eurodif2002, Madrid, 28-30 April 2003, Polytechnic Institute of Madrid.

Chaotic dynamical systems, deceptive computers, and new instructional technologies. Jaca, Espagne, bi-annual Pau-Jaca conference in applied mathematics and statistics. 18 sept. 2001.

The local coefficient of ergodicity of a nonnegative matrix, 8th Annual ILAS Conference, Barcelona, 19-22 juillet 1999.

A two-sex Demographic Model of the Heterosexual Spread of HIV. « Measurement of risk and modelling the spread of AIDS », IUSSP Workshop, Copenhagen, Danemark, 1er juin-4 juin, 1998.

A Non-linear Demographic Model of a Heterosexually Transmitted Disease with Vertical Transmission : Application to HIV in Africa. Conference on « Non-linear Models in Demography », organized by the Max-Planck Institute for Demographic Research, Rostock, Germany, 26-28 may 1998.

On Inhomogeneous products of Leslie matrices : Application to the Case of Slowly Varying Perron Vectors. (Poster). Annual meeting of the Population Association of America, Washington, DC, USA, 27-29 mars 1997.

Of Flies and Men: A compartmental model of sleeping sickness in Central Africa. (with J.P. Gouteux). Presented at Fourth International Conference on Mathematical Population Dynamics, Houston, Texas, May 23-27, 1995.

Population Association of America (PAA): "Discussant - Organizer" for session on Models of population dynamics. Annual meeting of PAA, Miami, May 5-7, 1994.

"A modeled time-varying density function for the incubation period of AIDS" Presented at the Third International Conference on Population Dynamics, Pau, France, June1-5, 1992.

Discussant at the session on "Mathematical Demography" at the Annual Meeting of the Population Association of America. Denver, CO; April 29-May 1, 1992.

Organizer, Chair, and Discussant of the session "Socio-economic models of population growth: from extinction to bifurcation" at the Annual Meeting of the Population Association of America. Toronto, Canada; May 3-5, 1990.

"Long-term projections of the HIV/AIDS epidemic for homosexual/bisexual men and intravenous drug users in five European countries", presented at the Annual Meeting of the Population Association of America. Toronto, Canada; May 3-5, 1990.

"Projections of the HIV/AIDS epidemic for homosexual/bisexual men and intravenous drug users in five European countries" (with G. Heilig) presented at the IIASA/INED workshop on Modelling the Spread of HIV/AIDS and its Demographic and Social Consequences, Budapest, Hungary, November 23-24, 1989.

"A two-state infective-age structured model for the spread of AIDS in the USA" (with R. Wykoff) presented in poster form at IV International Conference on AIDS, Stockholm, Sweden, June 12-16, 1988. Abstract #4695 page 235 of program.

"Mathematical investigations of the escape from the Malthusian trap", (with J. Komlos) presented at the workshop on Reconstitution and Dynamics of Past Populations, organized by the National Institute for Demographic Studies, Paris, France. June 2-4, 1989.

"A two-state age-structured model for the spread of AIDS in the United States", presented at the 12th Annual SEAS-SIAM meeting, The University of Tennessee Space Institute, Tullahoma, Tennessee, March 11-12, 1988.

"Empirical explorations of closed-form approximations for the dynamics of a population with slowly changing vital rates", presented at the Annual Meeting of the Population Association of America. Chicago, IL, April 30 - May 2, 1987.

"From Malthus to Boserup: a homeostatic simulation model of population growth through history", presented by co-author John Komlos at the Modeling and Simulation Conference, University of Pittsburgh, Pittsburgh, PA, April 25-26, 1986.

"Generalized equilibria in multistate demographic systems: a graph-theoretic approach", presented at the Annual Meeting of the Population Association of America. San Francisco, CA, April 3-5, 1986.

"On the dynamics of a generalized stable population: application to the United States" and "Population growth through history and the escape from the Malthusian trap: a homeostatic simulation model", presented at the General Conference of the International Union for the Scientific Study of Population. Florence, Italy, June 5-12, 1985.

"Conditions for asymptotically exponential solutions of linear difference equations with variable coefficients", presented at the Second SIAM Conference on Applied Linear Algebra. Raleigh, NC, April 29-May 2, 1985.

"Generalized stable population theory", presented at the Annual Meeting of the Population Association of America, Minneapolis, MN, May 3-5, 1984.