A research impact indicator for institutions |
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| Authors: | ES Vieira JANF Gomes |
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| Institution: | 1. Department of Library and Information Science, National Taiwan University, Taipei, Taiwan;2. Department of Mechanical Engineering and Institute of Industrial Engineering, National Taiwan University, Taipei, Taiwan;1. Kenya Marine and Fisheries Research Institute, P.O. Box 81651, 80100 Mombasa, Kenya;2. Gent University, Marine Biology Research Group, Krijgslaan 281– S8, 9000 Gent, Belgium;3. Technical University of Mombasa, P.O. Box 90420, 80100 Mombasa, Kenya;1. Department of Physical Medicine & Rehabilitation and University of Pittsburgh, Pittsburgh, PA 15219, USA;2. Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA 15213, USA;3. Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA;4. Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA;5. Department of Physical Therapy, and University of Pittsburgh, Pittsburgh, PA 15213, USA;6. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA;7. Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA 15219, USA;8. McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA;1. College of Computer Science, Beijing University of Technology, Beijing 100124, China;2. School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe 85287, USA;3. Automation Engineering Institute, Beijing Polytechnic, Beijing 100176, China;1. Laboratory for Studies of Research and Technology Transfer, Institute for System Analysis and Computer Science (IASI-CNR), National Research Council of Italy, Via dei Taurini 19, 00185 Rome, Italy;2. Dipartimento di Ingegneria dell’Impresa, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico 1, 00133 Roma, Italy |
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| Abstract: | This paper introduces a new impact indicator for the research effort of a university, nh3. The number of documents or the number of citations obtained by an institution are used frequently in international ranking of institutions. However, these are very dependent on the size and this is inducing mergers with the apparent sole goal of improving the research ranking. The alternative is to use the ratio of the two measures, the mean citation rate, that is size independent but it has been shown to fluctuate along the time as a consequence of its dependence on a very small number of documents with an extremely good citation performance. In the last few years, the popularity of the Hirsch index as an indicator of the research performance of individual researchers led to its application to journals and institutions. However, the original aim of this h index of giving a mixed measure of the number of documents published and their impact as measured by the citations collected along the time is totally undesirable for institutions as the overall size may be considered irrelevant for the impact evaluation of research. Furthermore, the h index when applied to institutions tends to retain a very small number of documents making all other research production irrelevant for this indicator. The nh3 index proposed here is designed to measure solely the impact of research in a way that is independent of the size of the institution and is made relatively stable by making a 20-year estimate of the citations of the documents produced in a single year. |
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