TSUKUBA index 1.1

 

Foreword to Tsukuba index 1.1

Head of Humanities & Social Science Evaluation Research Field
Faculty of Humanities and Social Science
Vice President / Director of the University Library
Jun Ikeda

 

iMD developed by Faculty of Humanities and Social Sciences, University of Tsukuba, allows us to measure the diversity of an academic journal in terms of contributors’ affiliation. Journals not included in citation database have been underrepresented in research evaluations including world university rankings. iMD paves the way for journals in all languages, countries and fields to be counted in research evaluations.

We posted Tsukuba index Public Beta on this website on December 1st, 2017. On the same day, we held a symposium about the index, and received quite a few opinions and comments about its benefits and possibilities from the panelists as well as participants. We posted Tsukuba index 1.0, which reflects these opinions and comments, on March 30, 2018. In February 2019, we organized another symposium “Research Metrics in Humanities and Social Sciences: From Seeds to Needs,” and received valuable feedback. We are happy to announce that we have posted Tsukuba index 1.1 with the narrowed list of journals. We welcome your suggestions and ideas for further improvement.

About iMD*

*Trademark registration [No. 6249662]

*Patent registration [No. 7004997]

  • iMD is a revised version of the “Diversity Factor” (DF) outlined in Ikeda & Morimoto 2015, according to which “current citation-based metrics manages to capture only a fraction of the actual research performance in the field of humanities and social sciences.”
  • DF is calculated by the following formula: (A+C)/I, where ‘A’ stands for the number of distinct Affiliations of the annual contributors, ‘C’ for the number of distinct Countries in which these institutions are located, and ‘I’ for the number of Issues published in a given year. DF as such quantifies the diversity of contributors per issue in terms of their affiliation and international distribution.
  • The revised version of DF has been called “iMD” (index for Measuring Diversity), and is calculated by the following formula: logn (α×C+β×A), where ‘C’ and ‘A’ stand for the same numbers as above, while α and β are parameters to assign weighting to C and A. To assign the same weighting to C and A, one may assign the value 1 to both α and β. To assign A twice the weighting of C, one may assign the value 1 to α, and 2 to β . iMD thus quantifies the diversity of contributors to an academic journal or the like per year in terms of their affiliation and international distribution with any weighting one likes. The logarithmic scale has been adopted in the revised version, because it reduces wide-ranging numbers of A to smaller ranges.
  • Calculating iMD has been made simple by this web tool (available only in Japanese).

Reference

Yukihito Morimoto, Jun Ikeda, Japan’s first open research publication service, Information Science and Technology, 2023, Volume 73, Issue 1, p. 21-25, Published on 01/01/2023, Online ISSN 2189-8278, Print ISSN 0913-3801, https://doi.org/10. 18919/jkg.73.1_21, https://www.jstage.jst.go.jp/article/jkg/73/1/73_21/_article/-char/ja (embargo period of 6 months)

Jun Ikeda and Yukihito Morimoto, Research Metrics for the Rest of Us, Inter Faculty 6 (2015), 95-98. https://journal.hass.tsukuba.ac.jp/interfaculty/article/view/99

Organizations which have introduced iMD into their research evaluation:

• Faculty of Humanities and Social Sciences, University of Tsukuba
Faculty of Human Sciences, University of Tsukuba

About TSUKUBA index

 

 

  • TSUKUBA index is a list of iMD values that we calculated. We hereby publish TSUKUBA index 1.1, which incorporates tentative iMD of 137 journals from Web of Science (based on the data provided by Clarivate Analytics) as well as publications by the members of the Faculty of Humanities and Social Sciences, University of Tsukuba.

This is protptype, and we welcome suggestions and ideas for improvement. Please email us at  imd@icrhs.tsukuba.ac.jp for suggestions and/or questions.

雑誌名 iMD2015 iMD2016 iMD2017 iMD2018 iMD2019 iMD2020
PLOS ONE 14.1 13.9 13.9 13.9 13.8 13.8
NATURE COMMUNICATIONS 11.6 11.9 12.0 12.3 12.4 12.5
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 11.5 11.5 11.7 11.7 11.8 11.9
NATURE 11.1 11.0 11.2 11.0 11.5 11.7
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 10.7 10.8 11.0 11.1 11.1 11.1
PHYSICAL REVIEW LETTERS 10.9 10.9 11.0 11.1 11.1 11.1
PHYSICAL REVIEW B 10.8 11.0 11.0 11.0 11.0 11.1
SCIENCE 10.6 10.6 10.7 11.0 11.0 11.1
PHYSICAL REVIEW D 10.9 11.0 11.0 11.0 11.1 11.0
ASTROPHYSICAL JOURNAL 10.8 10.8 10.9 10.9 10.9 11.0
ASTRONOMY & ASTROPHYSICS 10.5 10.6 10.6 10.6 10.7 10.9
CHEMICAL COMMUNICATIONS 10.9 10.7 10.7 10.8 10.9 10.9
ANALYTICAL CHEMISTRY 10.6 10.6 10.7 10.8 10.9 10.9
NEW ENGLAND JOURNAL OF MEDICINE 10.7 10.6 10.7 10.9 10.9 10.9
ANGEWANDTE CHEMIE INTERNATIONAL EDITION 10.5 10.5 10.5 10.6 10.6 10.8
JOURNAL OF BIOLOGICAL CHEMISTRY 10.9 11.0 10.8 10.7 10.8 10.7
APPLIED PHYSICS LETTERS 11.0 10.9 10.8 10.7 10.6 10.7
INORGANIC CHEMISTRY 10.2 10.3 10.5 10.5 10.6 10.7
PHYSICAL REVIEW A 10.5 10.6 10.6 10.6 10.7 10.7
EUROPEAN PHYSICAL JOURNAL C 10.1 10.3 10.4 10.5 10.5 10.6
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 10.3 10.4 10.5 10.5 10.6 10.6
NATURE MEDICINE 9.2 9.2 9.2 9.6 9.9 10.6
JOURNAL OF HIGH ENERGY PHYSICS 10.3 10.3 10.3 10.4 10.4 10.5
JOURNAL OF PHYSICAL CHEMISTRY LETTERS 9.6 9.8 10.0 10.1 10.2 10.4
JOURNAL OF CLINICAL INVESTIGATION 9.7 9.7 9.8 9.9 9.9 10.3
CHEMICAL SCIENCE 9.7 9.7 10.0 10.0 10.2 10.3
ORGANIC LETTERS 9.9 10.0 9.9 10.1 10.3 10.2
CELL 9.5 9.6 9.6 9.9 10.0 10.1
NANO LETTERS 10.0 10.0 10.1 10.1 10.2 10.1
ADVANCED MATERIALS 9.7 9.9 10.0 10.0 9.9 10.1
AMERICAN JOURNAL OF HUMAN GENETICS 9.9 10.1 9.9 10.0 10.1 10.1
ASTROPHYSICAL JOURNAL LETTERS 9.7 10.0 10.1 10.0 10.1 10.1
NATURE GENETICS 10.4 10.5 10.6 10.3 10.6 10.1
CURRENT BIOLOGY 9.6 9.7 9.7 9.8 9.9 10.0
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 9.9 9.9 9.9 9.8 10.1 10.0
QUATERNARY INTERNATIONAL 9.7 10.1 10.1 9.9 10.0 9.9
QUATERNARY SCIENCE REVIEWS 9.4 9.6 9.6 9.8 9.8 9.9
JOURNAL OF GEOPHYSICAL RESEARCH_ATMOSPHERES 9.6 9.9 9.8 9.9 9.9 9.9
PLOS BIOLOGY 8.9 9.2 9.1 9.7 9.9 9.8
JOURNAL OF NEUROSCIENCE 10.2 10.0 10.0 9.8 9.8 9.7
INFORMATION 6.6 7.1 7.9 9.0 9.2 9.7
EARTH AND PLANETARY SCIENCE LETTERS 9.5 9.6 9.6 9.7 9.4 9.7
JOURNAL OF GEOPHYSICAL RESEARCH_SOLID EARTH 9.2 9.3 9.4 9.5 9.6 9.5
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 9.2 9.5 9.2 9.6 9.3 9.4
EMBO JOURNAL 8.8 8.7 9.2 9.3 9.3 9.4
MOLECULAR CELL 9.0 9.1 9.1 9.2 9.4 9.4
SPECTROSCOPY AND SPECTRAL ANALYSIS 9.2 9.2 9.2 9.3 9.3 9.3
JOURNAL OF GEOPHYSICAL RESEARCH_OCEANS 9.2 9.2 9.3 9.3 9.4 9.3
ECOLOGY 9.2 9.3 9.2 9.4 9.4 9.3
GEOLOGY 9.1 9.0 9.1 9.0 9.1 9.1
CELL METABOLISM 8.6 8.9 8.6 8.9 9.2 9.1
NATURE PHYSICS 9.0 8.7 9.6 9.0 9.2 9.1
NEURON 8.9 8.9 9.0 9.4 9.0 9.0
GENOME RESEARCH 9.0 8.9 9.0 8.9 9.2 9.0
ECOLOGY LETTERS 8.5 8.4 8.8 9.0 9.2 9.0
NATURE BIOTECHNOLOGY 8.3 8.8 8.6 8.5 8.7 9.0
NATURE IMMUNOLOGY 8.4 8.7 8.6 8.7 9.0 8.9
NATURE METHODS 8.5 8.2 8.8 8.6 8.8 8.9
NATURE MATERIALS 8.6 8.7 8.7 8.8 8.8 8.9
JOURNAL OF CELL BIOLOGY 8.9 8.6 8.9 9.0 8.8 8.9
NATURE CELL BIOLOGY 8.6 8.5 8.4 8.6 8.7 8.8
IMMUNITY 8.7 9.0 8.9 8.9 8.9 8.8
JOURNAL OF ARCHAEOLOGICAL SCIENCE 9.1 8.6 8.4 8.7 8.5 8.8
CELL HOST & MICROBE 8.4 8.6 8.6 8.7 8.6 8.8
NATURE NEUROSCIENCE 8.9 8.9 8.9 8.8 9.0 8.8
NATURE GEOSCIENCE 8.8 8.8 8.8 8.9 9.1 8.8
NATURE CHEMICAL BIOLOGY 8.3 8.6 8.7 8.7 8.6 8.7
DEVELOPMENTAL CELL 8.6 8.5 8.6 9.0 8.8 8.7
NATURE NANOTECHNOLOGY 8.4 8.4 8.6 8.7 8.6 8.6
CANCER CELL 8.6 9.0 8.9 9.0 9.1 8.6
CELL STEM CELL 8.1 8.3 8.4 8.6 8.7 8.5
PLANT AND CELL PHYSIOLOGY 8.4 8.5 8.4 8.5 8.6 8.5
NATURE PHOTONICS 7.9 8.2 8.1 8.3 8.3 8.5
GASTRIC CANCER 8.1 8.4 8.3 8.6 8.6 8.5
IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS 8.0 8.5 8.5 8.5 8.5 8.4
NATURE CHEMISTRY 7.7 8.3 8.4 8.6 8.2 8.4
NATURE STRUCTURAL & MOLECULAR BIOLOGY 8.1 8.3 8.3 8.3 8.2 8.3
ENVIRONMENTAL RESOURCE ECONOMICS 7.8 7.6 8.0 7.9 8.3 8.3
JOURNAL OF HUMAN EVOLUTION 8.3 8.2 8.3 8.4 8.4 8.2
JOURNAL OF GASTROENTEROLOGY 7.7 8.0 8.6 8.2 8.3 8.2
GENES & DEVELOPMENT 8.3 8.6 8.5 8.0 8.1 7.9
PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 7.1 7.2 7.2 7.4 9.2 7.8
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES 8.1 8.2 8.3 8.2 8.1 7.8
NPG ASIA MATERIALS 7.2 7.8 7.7 7.6 7.7 7.8
TELEMATICS AND INFORMATICS 7.2 7.6 8.3 8.3 7.6 7.7
STUDIES IN CONSERVATION 7.2 7.9 6.5 7.8 7.4 7.7
JOURNAL OF POLICY MODELING 7.1 7.2 7.2 7.3 7.3 7.7
JOURNAL OF INTERNATIONAL ECONOMICS 7.7 7.8 7.5 7.7 7.7 7.7
EMPLOYEE RELATIONS 6.7 6.8 7.0 6.9 7.7 7.6
JOURNAL OF ANTHROPOLOGICAL ARCHAEOLOGY 7.1 7.3 7.1 7.2 7.8 7.5
CUSTOS E AGRONEGOCIO ON LINE 6.9 6.9 7.1 7.2 7.1 7.4
ACADEMY OF MANAGEMENT JOURNAL 7.3 7.3 7.4 7.4 7.5 7.3
ASIA-PACIFIC JOURNAL OF ACCOUNTING & ECONOMICS 5.4 5.8 5.8 6.2 7.1 7.3
JOURNAL OF PEASANT STUDIES 6.6 6.6 7.0 7.0 7.2 7.3
CURRENT ANTHROPOLOGY 7.3 6.8 7.5 6.7 6.8 7.3
JOURNAL OF ARCHAEOLOGICAL METHOD AND THEORY 6.2 6.5 6.8 6.6 6.9 7.1
MODERN LANGUAGE JOURNAL 6.3 6.2 6.0 6.1 6.1 7.1
MIS QUARTERLY 6.7 6.7 6.9 6.9 6.7 7.1
JOURNAL OF MANAGEMENT 7.2 6.8 7.3 7.9 7.8 7.0
JOURNAL OF FINANCE 6.9 6.8 7.0 7.1 7.1 7.0
ECONOMETRICA 6.8 6.6 6.7 6.9 7.0 7.0
AMERICAN JOURNAL OF POLITICAL SCIENCE 6.8 6.4 6.7 6.6 6.8 7.0
ORGANIZATIONAL RESEARCH METHODS 6.0 5.9 5.9 6.3 6.8 6.7
QUARTERLY JOURNAL OF ECONOMICS 6.2 6.2 6.4 6.2 6.5 6.7
PUBLIC UNDERSTANDING OF SCIENCE 7.2 6.8 7.1 7.0 7.1 6.6
DNA RESEARCH 7.0 7.6 7.6 7.7 7.4 6.6
YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN 6.6 6.4 6.7 6.3 6.2 6.6
LUTS LOWER URINARY TRACT SYMPTOMS 5.9 6.0 6.1 7.0 7.2 6.6
INTERNATIONAL JOURNAL OF LOGISTICS MANAGEMENT 6.3 6.7 6.9 7.2 6.8 6.6
JOURNAL OF CONSUMER CULTURE 5.3 6.3 6.2 6.0 6.2 6.6
CYTOLOGIA 6.4 6.5 6.7 6.5 6.4 6.5
THEORY CULTURE SOCIETY 6.3 6.5 5.9 6.3 6.3 6.5
UNIVERSITAS MONTHLY REVIEW OF PHILOSOPHY AND CULTURE 6.3 6.2 6.5 6.5 6.3 6.4
JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS 6.8 6.9 6.4 6.5 6.5 6.4
BUNSEKI KAGAKU 6.6 6.6 6.9 6.7 6.9 6.3
JOURNAL OF ECONOMIC PERSPECTIVES 6.2 6.3 6.2 5.9 6.1 6.3
PROFESSIONAL GEOGRAPHER 6.5 6.7 6.7 6.8 6.9 6.2
NIPPON SUISAN GAKKAISHI 6.4 6.5 6.9 7.0 6.3 6.2
ELECTRONICS AND COMMUNICATIONS IN JAPAN 6.5 6.9 6.7 6.7 6.6 6.0
ECONOMIC HISTORY REVIEW 6.4 6.1 5.7 6.4 6.3 6.0
FRENCH REVIEW 5.6 5.7 5.8 5.7 5.8 6.0
RBGN-REVISTA BRASILEIRA DE GESTAO DE NEGOCIOS 6.2 5.9 5.9 5.6 6.4 5.7
JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY 6.3 5.9 6.2 6.1 5.9 5.7
AMERICAN HISTORICAL REVIEW 5.8 5.6 5.4 5.5 5.9 5.6
HISTORICAL ARCHAEOLOGY 5.2 5.6 5.4 5.8 5.6 5.4
ELECTRICAL ENGINEERING IN JAPAN 6.8 6.8 6.8 6.6 6.3 4.8
文化人類学 4.5 4.5 4.1 4.5 4.5 4.7
INTER FACULTY(筑波大学) 1.6 3.0 2.8 2.3 4.3
日本中国学会報 3.7 3.6 4.2 3.8 3.6 4.0
開発学研究 3.6 3.6 2.8 3.6 3.8 3.9
犯罪社会学研究 3.2 2.8 4.2 3.5 3.2 3.2
西アジア考古学 2.0 3.7 4.3 1.6 2.6 2.6
史境(筑波大学) 2.8 2.3 3.2 2.6 2.3 2.3
FUJITSU SCIENTIFIC & TECHNICAL JOURNAL 4.0 4.1 4.8 3.3 3.8 2.3
JACET JOURNAL 3.9 3.3 3.7 3.8 3.3 2.0
国際公共政策論集(筑波大学) 1.0 1.0 1.0 1.0 1.0 1.0
経済学論集(東京大学) 1.0 2.0 2.6 1.0 2.6 1.0