Education and Research Areas


I was born in 1947 and I have studied psychology at Humboldt University of Berlin (Dipl.-psych.) and in 1975 I received my doctorate (Dr. oec.) at the University of Economics, Berlin-Karlshorst.
In 1986 I defended my postdoctoral thesis (Dr.sc.phil.) at the Academy of Sciences of the former German Democratic Republic. In 1996 this postdoctoral qualification was confirmed by the Free University and since then I have been appointed as a private lecturer (PD), Germany.
On April 5, 2001, in my function as a postdoctorally qualified private lecturer, I was appointed as Honorary Professor by Henan Normal University, Xinxiang, China, an honourable distinction that was bestowed by this University upon only a very few high-ranking scientists, among them on the Nobel-prize winner J. Georg Bednorz.

My work deals with reflections of social structures in co-authorship and citation networks by structure measures, modelling of collaboration systems and theory (Continuation of Lotka´s law on the 3rd dimension), development and change of dynamic social structures in sciences over several centuries. I have studied collaboration processes during the last 25 years both from the viewpoints of bibliometrics, webometrics and socio-psychology. My interests focus on different aspects of similarity and dissimilarity of collaborators with respect to critical variables such as productivity, gender, research (problem) areas, disciplinarity, interdisciplinarity, and other themes.

Publications and Organization of Conferences

As a science author in the field of quantitative science research and socio-psychology, I have since emerged with a wide range of international contributions to this field. A great deal of publications in current literatures, among them some 70 articles in international journals and anthologies and about 18 national ones, four articles in Chinese language, 10 anthologies as editor, have established my international recognition.
I was personally invited by the Guest Editor of the “Special Issue on Theory” of the American journal “Library Trends” for contribution of my theoretical approach to be published in April 2002, see publication list.
I have published some of my articles in co-authorship with Donald deB. Beaver (USA), Liang Liming (China), Guo Yongzheng (China), Ramesh Kundra (India), Brian Mohan Gupta (India), Ronald Rousseau (Belgium) and I have published proceedings in my function as co-editor together with Frank Havemann (BRD), Roland Wagner-Döbler (BRD) Ramesh Kundra (India), Yogendra Singh (India), Shabahat Hussain (India) and Wolfgang Glänzel (Belgium, Germany, Hungary).

The proceedings are related to conferences and workshops I have organised in my function as chair:

  1. of the 4th International Conference on Scientometrics and Informetrics, Berlin 1993
  2. of the First Berlin Workshop on Scientometrics and Informetrics/Collaboration in Science, Berlin 1998
  3. of the Second Berlin Workshop on Scientometrics and Informetrics/Collaboration in Science and in Technology and First COLLNET Meeting, Berlin 2000
  4. and of further COLLNET Meetings from 2001-2005

My projects and conferences have so far been sponsored by contributions from different countries, among others by the Technology Foundation Utrecht (The Netherlands), the Eugene Garfield Foundation Philadelphia (USA), the National Institute of Science, Technology and Development Studies, New Delhi (India), the Internet Firm ALTUS Media AG, by arrangement, within the framework of DFG/NSFC-Agreements (DFG-Deutsche Forschungsgemeinschaft, NSFC-National Natural Science Foundation of China) as well as by the DFG/INSA-Agreements (INSA-Indian National Science Academy). My present project is supported by a grant from the Common Basis for Science, Technology and Innovation Indicators part of the Improving Human Research Potential specific programme of the Fifth Framework for Research and Technological Development of the European Commission. It is part of the WISER project (Web indicators for scientific, technological and innovation research) (Contract HPV2-CT-2002-00015).


Teaching Profession

  1. Since 2005 I'm teaching at the Department of Library and Information Science, Humboldt-University of Berlin, Berlin, Germany
  2. Since 2004 I'm special engaged as Visiting Professor at the Dalian University of Technology, China
  3. I was teaching from 1994 - 2003 at the Department of Psychology of the Free University Berlin
  4. I am invited as Visiting Professor for teaching at the Henan Normal University, Xinxiang (China), April/May 2002
  5. I was invited as Visiting Professor for teaching my theory at the Dalian University of Technology, Dalian (China), July/August 2001.

Research Abroad

  1. Since 2004, School of Humanities and Social Sciences, Dalian University of Technology, Dalian (China)
  2. National Institute of Science, Technology and Development Studies, New Delhi (India), 3 months in 1998 and February/March 2002
  3. October-December 2001 as international visitor in the John Metcalfe Visiting Scholar program of the The New South Wales University Sydney (Australia)
  4. University of Leiden, CWTS (The Netherlands), 7 months in 1997/98, supported by the Technology Foundation Utrecht

Invited Speaker at International Conferences

In my capacity as a foundation member, board member and first President of the International Society for Scientometrics and Informetrics (I.S.S.I.) and as an Associate Editor of the international journal “Scientometrics”, I was part of the four internationally leading scientists, who were invited to the 1998-Beijing-held Seminar of Quantitative Evaluation of R&D at universities and colleges and to the Fifth All-China Annual Meeting of Scientometrics and Informetrics.

Moreover, I officiated as an active member on the International Program Committee of the biennial World Conferences held in Chicago (USA), Jerusalem (Israel), Colima (Mexico), Sydney (Australia), Beijing (China) and Stockholm (Sweden). In addition, I was invited to take the chair of one of the sessions each.

In my capacity as a keynote speaker I was several times invited at international conferences, among them at the Chinese Universities of Shanghai, Guangzhou, Wuhan, Panyu and Dalian, at the Center for International Research & Collaboration, Tehran (Iran) or at the Indian Institute of Technology, Madras (India).

Foundation of COLLNET (www.collnet.de)

In 2000 I have established together with Liang Liming (China) and Ramesh Kundra (India) an global interdisciplinary research network to focus on the nature of “Collaboration in Science and in Technology-COLLNET” with about 65 principal investigators from 21 countries. I hosted its first international Meeting in September 2000 in Berlin. This international network of scholars has since held four other Meetings – the second in New Delhi (India), the third in Sydney (Australia) as part of the 8th ISSI International Conference on Scientometrics and Informetrics, the fourth in Beijing (China) as part of the 9th ISSI International Conference on Scientometrics and Informetrics, the fifth in Roorkee (India) as part of the International Workshop on Webometrics, Informetrics and Scientometrics. The sixth was been held in Stockholm (Sweden) in 2005 as part of the 10th ISSI International Conference on Scientometrics and Informetrics.

A new journal is founded in August 2004 entitled "Journal of Information Management and Scientometrics (Incorporating the COLLNET Journal)". I'm appointed as Associate Editor.

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