Dr. Clara Calero-Medina

Clara Calero-Medina is a senior researcher and director of innovation and impact at the Centre for Science and Technology Studies (CWTS) at Leiden University. She is a coordinator of the Information & Openness focal area and a member of the Engagement & Inclusion focal area.

Clara has a background in economics and in science and technologies studies. She obtained her PhD Degree in 2012 from Leiden University. In her thesis, Clara applied network analysis to scientific publications. In particular, she analyzed citation and co-authorship networks to study knowledge transfer and research collaboration. Another line of her research relates to the definition and scope of research organizations. During many years, Clara has been the head of a team creating and maintaining an inventory of different types of research organizations, their conditions of existence, and their relationships of dependency and affiliation to other organizations. This work is of crucial importance for the CWTS Leiden Ranking. Clara is also coordinating and managing different contract and institutional research projects carried out by CWTS, as well as being involved in many of these projects.

Since fall 2023, Clara has been a member of the board of the European Network of Indicators Designers (ENID).
 

Publications

Journal publications (8)

• Reyes Elizondo, A.E., Calero-Medina, C.M., & Visser, M.S. (2022). The three-step workflow: a pragmatic approach to allocating academic hospitals’ affiliations for bibliometric purposes. Journal of Data and Information Science, 7(1), 20-36. (paper)
• Van Leeuwen, T.N., Costas, R., Calero-Medina, C.M., & Visser, M.S. (2013). The role of editorial material in bibliometric research performance assessments. Scientometrics, 95(2), 817-828. doi:10.1007/s11192-012-0904-5 (paper)
• Van Leeuwen, T.N., & Calero-Medina, C.M. (2012). Redefining the field of economics: Improving field normalization for the application of bibliometric techniques in the field of economics. Research Evaluation, 21, 61-70. doi:10.1093/reseval/rvr006 (paper)
• Waltman, L., Calero-Medina, C.M., Kosten, M.J.F., Noyons, E.C.M., Tijssen, R.J.W., Van Eck, N.J., Van Leeuwen, T.N., Van Raan, A.F.J., Visser, M.S., & Wouters, P. (2012). The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation. Journal of the American Society for Information Science and Technology, 63(12), 2419-2432. doi:10.1002/asi.22708 (paper)
• Noyons, E.C.M., & Calero-Medina, C.M. (2009). Applying bibliometric mapping in a high level science policy context. Scientometrics, 79(2), 261-275. doi:10.1007/s11192-009-0417-z (paper)
• Calero-Medina, C.M., & Noyons, E.C.M. (2008). Combining mapping and citation network analysis for a better understanding of the scientific development: The case of the absorptive capacity field. Journal of Informetrics, 2(4), 272-279. doi:10.1016/j.joi.2008.09.005 (paper)
• Calero-Medina, C.M., Lopez-Illescas, C., Visser, M.S., & Moed, H.F. (2008). Important factors in the interpretation of bibliometric rankings of world universities. Research Evaluation, 17, 71-81. doi:10.3152/095820208X280907 (paper)
• Calero-Medina, C.M., Buter, R.K., Valdes, C.C., & Noyons, E.C.M. (2006). How to identify research groups using publication analysis: an example in the field of nanotechnology. Scientometrics, 66(2), 365-376.

Conference publications (11)

• Costas, R., Van Honk, J., Calero-Medina, C.M., & Zahedi, Z. (2017). Discussing practical applications for altmetrics: development of ‘social media profiles’ for African, European and North American publications. (paper)
• Costas, R., Van Honk, J., Zahedi, Z., & Calero-Medina, C.M. (2016). Discussing practical applications for altmetrics: development of ‘social media profiles’ for African, European and North American publications. (paper)
• Costas, R., Calero-Medina, C.M., Waltman, L., & Wouters, P. (2013). The relationship between the performance of editorial board members and the impact of scientific journals : an exploratory analysis. In Proceedings of 18th International Conference on Science and Technology Indicators (pp. 87-95).
• Larsen, K., & Calero-Medina, C.M. (2013). Discoveries and citations over time in solar cell technology. In Proceedings of 18th International Conference on Science and Technology Indicators (pp. 199-204).
• Meijer, I., Calero-Medina, C.M., & Abma-Schouten, R. (2013). Societal Use of Research (SURe): stakeholder perceptions and data method development. In Proceedings of 18th International Conference on Science and Technology Indicators (pp. 237-241).
• Praal, F.E.W., Kosten, M.J.F., Calero-Medina, C.M., & Visser, M.S. (2013). Ranking universities: The challenge of affiliated institutes. In S. Hinze, & A. Lottmann (Eds.), Proceedings of the 18th International Conference on Science and Technology Indicators (pp. 284-289).
• Waltman, L., Calero-Medina, C.M., Kosten, M.J.F., Noyons, E.C.M., Tijssen, R.J.W., Van Eck, N.J., Van Leeuwen, T.N., Van Raan, A.F.J., Visser, M.S., & Wouters, P. (2012). The Leiden Ranking 2011/2012: Data collection, indicators, and interpretation. In Proceedings of the 17th International Conference on Science and Technology Indicators (pp. 791-802).
• Van Leeuwen, T.N., & Calero-Medina, C.M. (2009). Redefining the Field of Economics: Improving Field Normalization for the Application of Bibliometric Techniques in the Field of Economics. In Proceedings of the 12th International Conference of the International Society for Scientometrics and Informetrics (pp. 410-420).
• Van Leeuwen, T.N., & Calero-Medina, C.M. (2009). Redefining the field of economics: Improving field normalization for the application of bibliometric techniques in the field of economics. In Proceedings of the 12th International Conference of the International Society for Scientometrics and Informetrics.
• Visser, M.S., Calero-Medina, C.M., & Moed, H.F. (2007). Beyond Rankings: the Role of Large Research Universities in the Global Scientific Communication System. In Proceedings of the 11th International Conference of the International Society for Scientometrics and Informetrics (pp. 762-765).
• Calero-Medina, C.M., Van Leeuwen, T.N., & Tijssen, R.J.W. (2005). Research networks of pharmaceutical firms: Geographical patterns of research collaboration within and between firms. In Proceedings of the 10th International Conference of the International Society for Scientometrics and Informetrics (pp. 310-315).