Between October 2003 and January 2009 worked as a Researcher in the Central European Forum for Migration and Population Research in Warsaw. Since 2009 is an Associate Member of CEMFR.
In the period 2001-2003 employed in the Demographic Unit of the UN International Criminal Tribunal for the former Yugoslavia (ICTY), initially as a research assistant and later as a demographer, analysing population consequences of the 1990s conflicts in the former Yugoslavia.
Professional and other associations
- Member of the European Association for Population Studies (EAPS)
- Member of the International Society for Bayesian Analysis (ISBA)
- Member of the Editorial Committee of Studia Demograficzne
Awards and Scholarships
- 2007: Jerzy Z. Holzer Award of the Committee of Demographic Sciences, Polish Academy of Sciences, for works on Bayesian forecasting of international migration;
- 2005-2006: Annual Stipend of the Foundation for Polish Science (FNP);
J. Bijak (2008), Bayesian Methods in International Migration Forecasting. In: J. Raymer and F. Willekens (eds.), International Migration in Europe: Data, Models and Estimates, John Wiley, Chichester: 255-281.
J. Bijak, D. Kupiszewska, M. Kupiszewski (2008), Replacement Migration revisited: Simulations of the effects of selected population and labour market strategies for the ageing Europe, 2002-2052. Population Research and Policy Review, 27(3): 321-342.
M. Kupiszewski, J. Bijak, B. Nowok (2008), The Impact of Future Demographic Trends in Europe, 2005-2050. Finnish Yearbook of Population Research XLIII (2007-2008):147-183. Earlier (unabridged) version available as: CEFMR Working Paper 6/2006 (pdf 0.97MB).
J. Bijak, A. Kicinger, D. Kupiszewska, M. Kupiszewski (2008), Long-term international migration scenarios for Europe, 2002-2052. In: C. Bonifazi, M. Okólski, J. Schoorl, P. Simon (eds.), International Migration in Europe: New Trends and New Methods of Analysis. IMISCOE Research, Amsterdam University Press, Amsterdam: 129-151.
J. Bijak, D. Kupiszewska, M. Kupiszewski, K. Saczuk, A. Kicinger (2007), Population and labour force projections for 27 European countries, 2002-2052: impact of international migration on population ageing. European Journal of Population, 23(1): 1-31.
E. Tabeau, J. Bijak (2006), War-related Death in the 1992-1995 Armed Conflicts in Bosnia and Herzegovina. In: H. Brunborg, E. Tabeau, H. Urdal (eds.), The Demography of Armed Conflict, International Studies in Population, Vol. 5, Springer, Berlin-Heidelberg.
Also available as:
E. Tabeau, J. Bijak (2005), War-related Deaths in the 1992-1995 Armed Conflicts in Bosnia and Herzegovina: A Critique of Previous Estimates and Recent Results, European Journal of Population 21(2-3): 187-215.
J. Bijak (2005), Estimation of a Relative Mortality Risk by Cause of Death: A Comparison of a Traditional Method and the Empirical Bayes Approach as Applied to the Czech Republic, the Netherlands and Poland, 1994-1996, Studia Demograficzne 147(1): 3-29 [in Polish].
J. Bijak (2003), International Comparability of Cause-of-Death Statistics in the Studies of
the Regional Differences of Mortality on the Example of Czech Republic, Poland and the
Netherlands, 1994-1996, Studia Demograficzne 144(2): 3-53 [in Polish].
Co-author of several analytical demographic reports, including five expert reports, prepared for
trial-related purposes in the UN International Criminal Tribunal for the former Yugoslavia, The Hague,
- E. Tabeau, J. Bijak, N. Lončarić (2003), Death Toll in the Siege of Sarajevo, April 1992 to December 1995: A Study of Mortality Based on Eight Large Data Sources. Expert report prepared for the case of Miloević / Bosnia (IT-02-54).
- E. Tabeau, M. Żółtkowski, J. Bijak, A. Hetland (2003), Ethnic Composition in and
Internally Displaced Persons and Refugees from 47 Municipalities of Bosnia and Herzegovina, 1991 to 1997 . Expert report prepared for the case of Miloević / Bosnia (IT-02-54).