Empirical series of journal h-indices: the JCR category Horticulture as a case study
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Empirical series of journal h-indices: the JCR category Horticulture as a case study
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| Id. |
49260042 |
| Idioma |
inglés
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| Titulo |
Empirical series of journal h-indices: the JCR category Horticulture as a case study |
| Autor(es) |
Liu, Yuxian
RAO, Ravichandra
ROUSSEAU, Ronald
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| Localización |
SCIENTOMETRICS, 80(1). p. 59-74
0138-9130
http://hdl.handle.net/1942/9904
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| Versión |
1.0 |
| Estado |
Final
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| Descripción |
Two types of series of h-indices for journals published in the field of Horticulture during the period 1998-2007 are calculated. Type I h-indices are based on yearly data, while type II h-indices use cumulative data. These h-indices are also considered in a form normalised with respect to the number of published articles.
It is observed that type I h-indices, normalised or not, decrease linearly over a period of ten years. The type II series, however, is not linear in nature: it exhibits partly a concave shape. This proves that the journals (in Horticulture) do not exhibit a linear increase in h-index as argued by Hirsch in the case of life-time achievements of scientists.
In the second part of the paper, an attempt is made to study the relative visibility of a journal and its change over time, based on h-indices of journals. It is shown that:
- the h-index over the complete period 1998-2007 of the journal Theoretical & Applied Genetics (h=62) is much higher than that of all other journals in the field;
- the relation between the number of publications and the type II h-index for the whole period is not an exact power law (as it would have to be if the Egghe-Rousseau model were applicable);
- in order to study the dynamic aspects of journal visibility, a field-relative normalised h-ratio is defined to monitor systematic changes in the field of Horticulture. Except for two journals, the Pearson correlation coefficient for yearly values of this field-relative normalised h-ratio indicates that there is no systematic change of the performance of the journals with respect to the field as a whole.
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| Tipo |
146026 bytes
application/pdf
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| Palabras clave |
journal h-index, time series, empirical investigations, horticulture, field-relative normalised h-ratio
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| Tipo de recurso |
Article - published
Article
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| Tipo de Interactividad |
Expositivo
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| Nivel de Interactividad |
muy bajo
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| Audiencia |
Estudiante
Profesor
Autor
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| Estructura |
Atomic |
| Coste |
no
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| Copyright |
sí
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| Formatos |
146026 bytes
application/pdf
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| Requerimientos técnicos |
Browser: Any
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| Relación |
[References] http://dx.doi.org/10.1007/s11192-007-2026-z
[References] 10.1007/s11192-007-2026-z
[References] 000267368100004
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| Fecha de contribución |
29-oct-2009 |
| Contacto |
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