Positions held 1960-1961 Deputy for relations to developing countries, Student government Association, University of Freiburg 1961 1962 Founding secretary, Freiburg Office for Relations to Developing Countries (an – office concerned with the dissemination of information about developing countries, particularly about the needs and opportunities for properly trained people willing to help in developing countries) 1963 1965 Systems analyst, Forschungsstelle für Weltzivilisation, Abteilung – Dokumentation (Research Center for Civilization, Documentation Department), Freiburg 1966 1967 Studienreferendar, Seminar für Studienreferendare, Freiburg – 1967 1969 Head, Documentation Department, Stiftung Wissenschaft and Politik – (Foundation Science and Politics), Ebenhausen 1969 1970 Head, Documentation Department, DATUM (Documentation and Training – Center for Theory and Methods of Regional Science), Bad Godesberg 1970 1971 Visiting lecturer, College of Library and Information Services 2000 – College of Information Studies), University of Maryland 1971 1976 Associate Professor – 1976 2009 Professor – 1976, 1977 Visiting lecturer (Summer), School of Library and Information Science, University of Western Ontario, London, Canada 1985 1989 Visiting Professor (Summer), Graduate Library School, University of Chicago – Sept., 1985- Visiting Professor, Chair for Information Science, University of Konstanz, June, 1986 Germany. 1987 1994 Visiting Professor (Summer), Konstanz, Germany – May July, Guest scientist, IPSI - Integrated Publication and – 1997 Information Systems Institute, German National Research Centre for Computer Science and Information Technology, Darmstadt May July, Visiting Lecturer, Department of Information and Documentation, – 1997 Fachhochschule Darmstadt 2007 - Professore Onorario, Department of Information and Communication Technology, University of Trento, Italy 2009 2012 Professor and Chair, Department of Library and Information Studies, Graduate – School of Education, University at Buffalo 2012 - Professor, Department of Library and Information Studies, Graduate School of Education, University at Buffalo
Positions held 1960-1961 Deputy for relations to developing countries, Student government Association, University of Freiburg 1961 – 1962 Founding secretary, Freiburg Office for Relations to Developing Countries (an office concerned with the dissemination of information about developing countries, particularly about the needs and opportunities for properly trained people willing to help in developing countries) 1963 – 1965 Systems analyst, Forschungsstelle für Weltzivilisation, Abteilung Dokumentation (Research Center for Civilization, Documentation Department), Freiburg 1966 – 1967 Studienreferendar, Seminar für Studienreferendare, Freiburg 1967 – 1969 Head, Documentation Department, Stiftung Wissenschaft and Politik (Foundation Science and Politics), Ebenhausen 1969 – 1970 Head, Documentation Department, DATUM (Documentation and Training Center for Theory and Methods of Regional Science), Bad Godesberg 1970 – 1971 Visiting lecturer, College of Library and Information Services 2000 College of Information Studies), University of Maryland 1971 – 1976 Associate Professor 1976 – 2009 Professor 1976, 1977 Visiting lecturer (Summer), School of Library and Information Science, University of Western Ontario, London, Canada 1985 – 1989 Visiting Professor (Summer), Graduate Library School, University of Chicago Sept., 1985- June, 1986 Visiting Professor, Chair for Information Science, University of Konstanz, Germany. 1987 – 1994 Visiting Professor (Summer), Konstanz, Germany May – July, 1997 Guest scientist, IPSI - Integrated Publication and Information Systems Institute, German National Research Centre for Computer Science and Information Technology, Darmstadt May – July, 1997 Visiting Lecturer, Department of Information and Documentation, Fachhochschule Darmstadt 2007 - Professore Onorario, Department of Information and Communication Technology, University of Trento, Italy 2009 – 2012 Professor and Chair, Department of Library and Information Studies, Graduate School of Education, University at Buffalo 2012 - Professor, Department of Library and Information Studies, Graduate School of Education, University at Buffalo