Informatik-Patente

Informatik-Patente

Informatik-Patente     

Scientometric analysis of papers submitted to the second international nanotechnology forum (Moscow, 2009)

This is a brief information and analytical survey of the papers submitted to the Second International Nanotechnology Forum held in Moscow in October 2009. Scientometric data on the participants, their origins by regions and research centers, as well as an analysis of the advancements and problems of Russian research in nanotechnologies, are given.     

Mechanics in the VINITI RAS: from an abstract journal to a database. The history of its development. Statistical characteristics in the period from 1953 to 2008

This paper considers the history of the creation and development of the VINITI RAS AJ in the field of mechanics from 1953 to 2008. The changes in the back issues and dynamics of the distribution of the total number of documents in the Mechanics AJ/DB are traced. The document information flow of the “Mechanics” DB from 1953 to 2008 is statistically analyzed.     

Time-driven activity-based costing for a library acquisition process: A case study in a Belgian University

Library managers are continuously urged to provide better library services at a lower cost. To cope with these cost pressures, library management needs to improve its understanding of the relevant cost drivers. Through a case study, we show how to perform time-driven activity-based costing for a library acquisition process in a Belgian university and provide evidence of the benefits of such an analysis.     

A new family of old Hirsch index variants

The Hirsch index h and the g index proposed by Egghe as well as the f index and the t index proposed by Tol are shown to be special cases of a family of Hirsch index variants, based on the generalized mean with exponent p. Inequalities between the different indices are derived from the generalized mean inequality. The graphical determination of the indices is shown for one example.     

Ranking of library and information science researchers: Comparison of data sources for correlating citation data,and expert judgments

This paper studies the correlations between peer review and citation indicators when evaluating research quality in library and information science (LIS). Forty-two LIS experts provided judgments on a 5-point scale of the quality of research published by 101 scholars; the median rankings resulting from these judgments were then correlated with h-, g- and H-index values computed using three different sources of citation data: Web of Science (WoS), Scopus and Google Scholar (GS). The two variants of the basic h-index correlated more strongly with peer judgment than did the h-index itself; citation data from Scopus was more strongly correlated with the expert judgments than was data from GS, which in turn was more strongly correlated than data from WoS; correlations from a carefully cleaned version of GS data were little different from those obtained using swiftly gathered GS data; the indices from the citation databases resulted in broadly similar rankings of the LIS academics; GS disadvantaged researchers in bibliometrics compared to the other two citation database while WoS disadvantaged researchers in the more technical aspects of information retrieval; and experts from the UK and other European countries rated UK academics with higher scores than did experts from the USA.     

A research impact indicator for institutions

This paper introduces a new impact indicator for the research effort of a university, ⁿh₃. The number of documents or the number of citations obtained by an institution are used frequently in international ranking of institutions. However, these are very dependent on the size and this is inducing mergers with the apparent sole goal of improving the research ranking. The alternative is to use the ratio of the two measures, the mean citation rate, that is size independent but it has been shown to fluctuate along the time as a consequence of its dependence on a very small number of documents with an extremely good citation performance. In the last few years, the popularity of the Hirsch index as an indicator of the research performance of individual researchers led to its application to journals and institutions. However, the original aim of this h index of giving a mixed measure of the number of documents published and their impact as measured by the citations collected along the time is totally undesirable for institutions as the overall size may be considered irrelevant for the impact evaluation of research. Furthermore, the h index when applied to institutions tends to retain a very small number of documents making all other research production irrelevant for this indicator. The ⁿh₃ index proposed here is designed to measure solely the impact of research in a way that is independent of the size of the institution and is made relatively stable by making a 20-year estimate of the citations of the documents produced in a single year.     

Rivals for the crown: Reply to Opthof and Leydesdorff

We reply to the criticism of Opthof and Leydesdorff on the way in which our institute applies journal and field normalizations to citation counts. We point out why we believe most of the criticism is unjustified, but we also indicate where we think Opthof and Leydesdorff raise a valid point.     

A case study of the modified g index: Counting multi-author publications fractionally

The citation records of 26 physicists are analyzed in order to determine the modified g index g_m which takes multiple coauthorship into account by fractionalized counting of the publications. The results are compared with the original g index as well as with the h index and the respective modified h index h_m. Although the correlations between these indices are relatively strong, the arrangement of the datasets is significantly different in detail depending on whether they are put into order according to the values of either the original or the modified indices.