Tamás Tarján is a senior research fellow for the Institute of Economics of the Hungarian Academy of Sciences where he has been working since 1974, two years after his graduation from Mathematics at Eotvos Lorand University (Budapest). He did his PhD in Combinatorics in 1976 and his degree of Candidate of Sciences in Economics in 1989. He has written widely on the modelling of investment and business cycles, the role of the new technology and human capital in the long term economic growth, the CEE countries integration to the EU and the New Growth Theory. He has been participating in numerous international research projects, many of them financed by the Commission of the European Union (PHARE ACE, INCO COPERNICUS). He has been being the Hungarian member of the Technical Committee of COST Social Sciences since 1998 and the Management Committee of the Hungarian Society for Economic Modelling between 1994-2004. He has been doing contract work for different Hungarian governmental agencies. He taught at the University of Debrecen and now is teaching for the Budapest Business School Faculty of International Management and Business Studies subjects in Mathematical Economics and Econometrics in French language. In 1997 he spent half a year at CEPREMAP (Paris) on a fellowship sponsored by PHARE ACE program. He is member of the editorial board of SZIGMA the only Hungarian periodical in mathematical economics.