Demographer, Docteur es Lettres et Sciences Humaines. Co-founder and Research Director of the Institute of Demographic Research/IDR (2004). Principal Investigator of the research project “Demographic Imperatives in Research and Practices in Greece” financed by the Hellenic Foundation for Research and Innovation (2020-2024). Professor of Demography (1999-2019), Department of Planning and Regional Development of University of Thessaly (UTH). Researcher at the National Center of Social Research (1983-1996) and Associate/invited researcher at the National Institute of Demographic Studies -INED/France, (1996-1998 and 2004-2013). Director (1998-2019) of the Laboratory of Demographic and Social Analyses (LDSA), the post-graduate program of the Dept. of Planning and Regional Studies (2001-2004) and the Joint French-Greek Master “Population-Development-Foresight” (Universities of Thessaly and Bordeaux, 2005-2017). President of the International Association of French-Speaking Demographers (2001-2004) and Honorary President since 2005. President (2007->) of the Demobalk International Association. Chevalier de Palmes Academiques of the French Government. Expert of the EU, responsible for the re-organization of the Statistical Institutes in Montenegro, Bih and Serbia in the framework of PHARE and CARDS programs (1998-2004). Member of numerous international Monitoring and Observation Missions for census operations in East European countries. Scientific responsible for the implementation of several research programs financed by national and international institutions. Author, co-author and editor of books about demographic & population developments in Greece and the Balkans. Author of several papers in collective volumes examining issues of demographic policy, population projections, migration, mortality, and family/fertility in Greece /Balkans.