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Prathap G.,National Institute for Science Communication and Information Resources
Scientometrics | Year: 2011

Bibliometric research assessment has matured into a quantitative phase using more meaningful measures and analogies. In this paper, we propose a thermodynamic analogy and introduce what are called the energy, exergy and entropy terms associated with a bibliometric sequence. This can be displayed as time series (variation over time), or in event terms (variation as papers are published) and also in the form of phase diagrams (energy-exergy-entropy representations). It is exergy which is the most meaningful single number scalar indicator of a scientist's performance while entropy then becomes a measure of the unevenness (disorder) of the publication portfolio. © 2011 Akadémiai Kiadó, Budapest, Hungary.


Prathap G.,National Institute for Science Communication and Information Resources
Scientometrics | Year: 2010

An indicator called the performance index (p-index) which can effectively combine size and quality of scientific papers, mocking what the h-index could do, emerges from an energy like term E = iC, where i is a measure of quality, expressed as the ratio of citations C to papers published P. In this paper, we demonstrate how this energy paradigm can be used for bibliometric research assessment. The energy assessment technique is demonstrated by applying it to the research assessment of all the countries listed in Essential Science Indicators. Partitioning is easily done by using contour lines on the two-dimensional iCE (impact-Citations-Energy) map. © 2010 Akadémiai Kiadó, Budapest, Hungary.


Prathap G.,National Institute for Science Communication and Information Resources
Scientometrics | Year: 2010

The h-index has captured the imagination of scientometricians and bibliometricians to such an extent that one can now divide the history of the subject virtually into a pre-Hirsch and a post-Hirsch period. Beyond its academic value, it is now used as a tool for research assessment of individuals, research faculties and institutions and even for comparing performance of journals and countries. Since its introduction, many Hirsch-type variants have been proposed to overcome perceived limitations of the original index. In this paper, using ideas from mathematical modeling, another mock h-index is proposed which may complement the h-index and give it better resolving power. © 2009 Akadémiai Kiadó, Budapest, Hungary.


Prathap G.,National Institute for Science Communication and Information Resources
Scientometrics | Year: 2010

In this paper, a new indicator called the performance index (p-index) is used to rank a 100 most prolific economists. The p-index strikes the best balance between activity (total citations C) and excellence (mean citation rate C/P). The surprise is that the h-index, which is now universally accepted almost as a canonical tool for research assessment of individuals, research faculties and institutions and even for comparing performance of journals and countries, is actually a poor indicator of performance. © 2009 Akadémiai Kiadó, Budapest, Hungary.


Prathap G.,National Institute for Science Communication and Information Resources
Scientometrics | Year: 2010

The h-index is now used almost as a canonical tool for research assessment of individuals, research faculties and institutions and even for comparing performance of journals and countries. However, its limitations have also been noticed and many Hirsch-type variants have been proposed. In this paper, a "mock h-index" which was recently proposed is compared with the "tapered h-index". © 2009 Akadémiai Kiadó, Budapest, Hungary.

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