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A modified method for calculating the Impact Factors of journals in ISI Journal Citation Reports: Polymer Science Category in 1997–2001

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Abstract

This article introduces a new modified method for calculating the impact factor of journals based on the current ISI practice in generating journal impact factor values. The impact factor value for a journal calculated by the proposed method, the so-called Cited Half-Life Impact Factor (CHAL) method, which is based on the ratio of the number of current year citations of articles from the previous X years to that of articles published in the previous X years, the X value being equal to the value of the cited half-life of the journal in the current year. Thirty-four journals in the Polymer Science Category from the ISI Subject Heading Categories were selected and examined. Total citations, impact factors and cited half-life of the 34 journals during the last five years (1997-2001) were retrieved from the ISI Journal Citation Reports and were used as the data source for the calculations in this work, the impact factor values from ISI and CHAL methods then being compared. The positions of the journals ranked by impact factors obtained from the ISI method were different from those from the CHAL method. It was concluded that the CHAL method was more suitable for calculating the impact factor of the journals than the existing ISI method.

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References

  1. The Institute For Scientific Information (ISI) Philadelphia (USA), (1999) in http://www.isinet.com

  2. Garfield, E., Citation analysis as a tool in journal evaluation, Science, 178 (1972) 471-479.

    Google Scholar 

  3. Jimenez-Contreras, E., Lopez-Cozar, E. D., Ruiz-Perez, R., Fernandez, V. M., Impact-Factor rewards affect Spanish research, Nature, 417 (2002) 898.

    Article  Google Scholar 

  4. Adam, D., News feature: The counting house, Nature, 415 (2002) 726-729.

    Google Scholar 

  5. Sombatsompop, N., Ratchatahirun, P., Surathanasakul, V., Premkamolnetr, N., Markpin, T., A citation report of Thai academic journals during 1996–2000, Scientometrics, 55 (2002) 445-462.

    Article  Google Scholar 

  6. GlÄnzel, W., Moed, H. F., Journal impact measures in bibliometric research, Scientometrics, 53 (2002) 171-193.

    Article  Google Scholar 

  7. Bordons, M., Fernandez, M. T., Gomez, I., Advantages and limitations in the use of impact factor measures for the assessment of research performance in a peripheral country, Scientometrics, 53 (2002) 195-206.

    Article  Google Scholar 

  8. Gowrishankar, J., Divakar, P., Sprucing up one.s impact factor, Nature, 401 (1999) 321-322.

    Article  Google Scholar 

  9. Colquhoun, D., Challenging the tyranny of impact factors, Nature, 423 (2003) 479.

    Article  Google Scholar 

  10. Garfield, E., The evolution of physical chemistry to chemical physics, Current Contents, 3 (1986) 3-12.

    Google Scholar 

  11. Hirst, G., Discipline Impact Factor: a method for determining core journal lists, Journal of the American Society for Information Science, 29 (1978) 171-172.

    Google Scholar 

  12. Asai, I., Adjusted age distribution and its application to impact factor and immediacy index, Journal of the American Society for Information Science, 32 (1981) 172-174.

    Google Scholar 

  13. GlÄnzel, W, Schoepflin, U., A bibliometric study on aging and reception processes of scientific literature, Journal of Information Science, 21 (1995) 37-53.

    Google Scholar 

  14. Moed, H. F., Luwel, M., Houben, J. A., Spruyt, E., Van Den Berghe, H., The effects of changes in the funding structure of the Flemish universities on their research capacity, productivity and impact during the 1980's and early 1990's, Scientometrics, 43 (1998) 231-255.

    Article  Google Scholar 

  15. Vinkler, P., Possible causes of differences in information impact of journals from different subfields, Scientometrics, 20 (1991) 145-161.

    Article  Google Scholar 

  16. Van Leeuwen, Th. N., Moed, H. F., Development and application of journal impact factor measures in the Dutch science system, Scientometrics, 53 (2002) 249-266.

    Article  Google Scholar 

  17. Vinkler, P., Subfield problems in applying the Garfield (Impact) Factors in practice, Scientometrics, 53 (2002) 267-279.

    Article  Google Scholar 

  18. Amin, M., Mabe, M., Impact factors: use and abuse, Perspectives in Publishing, 1 (2000) 1-6.

    MATH  Google Scholar 

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Authors and Affiliations

  1. Polymer Processing and Flow (P-PROF) Group, School of Energy & Materials, King Mongkut's University of Technology Thonburi (KMUTT), Thungkru, Bangmod, Bangkok, 10140, Thailand

    Narongrit Sombatsompop & T. Markpin

  2. KMUTT Central Library, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok (, Thailand

    N. Premkamolnetr

Authors
  1. Narongrit Sombatsompop
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  2. T. Markpin
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  3. N. Premkamolnetr
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Sombatsompop, N., Markpin, T. & Premkamolnetr, N. A modified method for calculating the Impact Factors of journals in ISI Journal Citation Reports: Polymer Science Category in 1997–2001. Scientometrics 60, 217–235 (2004). https://doi.org/10.1023/B:SCIE.0000027794.98854.f6

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  • DOI: https://doi.org/10.1023/B:SCIE.0000027794.98854.f6

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