Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT

Madrid, Spain

Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT

Madrid, Spain
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Costas R.,Leiden University | Bordons M.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2011

Scientific authorship has important implications in science since it reflects the contribution to research of the different individual scientists and it is considered by evaluation committees in research assessment processes. This study analyses the order of authorship in the scientific output of 1,064 permanent scientists at the Spanish CSIC (WoS, 1994-2004). The influence of age, professional rank and bibliometric profile of scientists over the position of their names in the byline of publications is explored in three different research areas: Biology and Biomedicine, Materials Science and Natural Resources. There is a strong trend for signatures of younger researchers and those in the lower professional ranks to appear in the first position (junior signing pattern), while more veteran or highly-ranked ones, who tend to play supervisory functions in research, are proportionally more likely to sign in the last position (senior signing pattern). Professional rank and age have an effect on authorship order in the three fields analysed, but there are inter-field differences. Authorship patterns are especially marked in the most collaboration-intensive field (i.e. Biology and Biomedicine), where professional rank seems to be more significant than age in determining the role of scientists in research as seen through their authorship patterns, while age has a more significant effect in the least collaboration-intensive field (Natural Resources). © 2011 The Author(s).


Gimenez-Toledo E.,Institute Estudios Documentales Sobre Ciencia y Tecnologia Iedcyt | Tejada-Artigas C.,Complutense University of Madrid
Profesional de la Informacion | Year: 2012

Publishers of scholarly books about library and information science and communications are analyzed, as well as their publishing processes. The research method was a questionnaire sent to 263 Spanish researchers and teachers in these areas. The survey response rate was 35.5%. Thanks to these responses, main quality indicators for publishers were identified. Researchers' working habits, opinions and attitudes related to the selection, editing and publishing processes of their books are also examined. Finally, as a more pragmatic result, the most prestigious Spanish and foreign publishers are identified.


Gonzalez-Albo B.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Bordons M.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Journal of Informetrics | Year: 2011

In 2008, the type of document "proceedings paper" (PP) was assigned in the WoS database to journal articles which were initially presented at a conference and later adapted for publication in a journal. Since the use of two different labels (" article" and "proceedings paper") might lead to infer differences in their relevance and/or quality, this paper presents a comparative study of standard journal articles and PP in journals to explore potential differences between them. The study focuses on the Library and Information Science field in the Web of Science database and covers the 1990-2008 period. PP approximately account for 9% of the total number of articles in this field, two-thirds of which are published in monographic issues devoted to conferences, which tend to be concentrated in specific journals. Proceedings papers emerge as an heterogeneous set comprising PP in ordinary issues, similar to standard articles in structure and impact of research; and PP in monographic issues, which seem to be less comprehensive and tend to receive less citations. Faster publication of PP in monographic than in ordinary issues may conceal differences in the review process undergone by either type of paper. The main implications of these results for authors, bibliometricians, journal editors and research evaluators are pointed out. © 2011 Elsevier Ltd.


Morillo F.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Diaz-Faes A.A.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Gonzalez-Albo B.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Moreno L.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2014

Science has become progressively more complex, requiring greater integration and collaboration between individuals, institutions and areas. Networking research establishes common rules and offers a suitable framework for this cooperation. Therefore, it is a good choice for both scientists and policy-makers. The objective of this study is to know whether the scientists perform better within these structures than outside them. As an example, we analysed the Biomedical Research Networking Centres in Spain and, for the exploratory investigation, we selected two disciplines (Psychiatry and Gastroenterology/Hepatology). The results showed that in every situation of networking research there were higher collaboration and impact rates. Furthermore, the main differences found between disciplines were related to the scope of cooperation, carried out at a more local level in Gastroenterology/Hepatology. Besides, HJ-Biplot technique allowed us to conclude that the outcomes may vary somewhat depending on the types of centres where the scientists work. Although further investigation is needed, the findings of this study might anticipate possible scenarios in which networking research could be the most natural way of collaboration. © 2013 Akadémiai Kiadó, Budapest, Hungary.


Costas R.,Leiden University | Van Leeuwen T.N.,Leiden University | Bordons M.,Institute Estudios Documentales Sobre Ciencia y Tecnologia IEDCYT
Journal of the American Society for Information Science and Technology | Year: 2012

This study presents an analysis of the use of bibliographic references by individual scientists in three different research areas. The number and type of references that scientists include in their papers are analyzed, the relationship between the number of references and different impact-based indicators is studied from a multivariable perspective, and the referencing patterns of scientists are related to individual factors such as their age and scientific performance. Our results show inter-area differences in the number, type, and age of references. Within each area, the number of references per document increases with journal impact factor and paper length. Top-performance scientists use in their papers a higher number of references, which are more recent and more frequently covered by the Web of Science. Veteran researchers tend to rely more on older literature and non-Web of Science sources. The longer reference lists of top scientists can be explained by their tendency to publish in high impact factor journals, with stricter reference and reviewing requirements. Long reference lists suggest a broader knowledge on the current literature in a field, which is important to become a top scientist. From the perspective of the "handicap principle theory," the sustained use of a high number of references in an author's oeuvre is a costly behavior that may indicate a serious, comprehensive, and solid research capacity, but that only the best researchers can afford. Boosting papers' citations by artificially increasing the number of references does not seem a feasible strategy. © 2012 ASIS&T.


Costas R.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | van Leeuwen T.N.,Leiden University | Bordons M.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2010

This paper focuses on the study of self-citations at the meso and micro (individual) levels, on the basis of an analysis of the production (1994-2004) of individual researchers working at the Spanish CSIC in the areas of Biology and Biomedicine and Material Sciences. Two different types of self-citations are described: author self-citations (citations received from the author him/herself) and co-author self-citations (citations received from the researchers' co-authors but without his/her participation). Self-citations do not play a decisive role in the high citation scores of documents either at the individual or at the meso level, which are mainly due to external citations. At micro-level, the percentage of self-citations does not change by professional rank or age, but differences in the relative weight of author and co-author self-citations have been found. The percentage of co-author self-citations tends to decrease with age and professional rank while the percentage of author self-citations shows the opposite trend. Suppressing author self-citations from citation counts to prevent overblown self-citation practices may result in a higher reduction of citation numbers of old scientists and, particularly, of those in the highest categories. Author and co-author self-citations provide valuable information on the scientific communication process, but external citations are the most relevant for evaluative purposes. As a final recommendation, studies considering self-citations at the individual level should make clear whether author or total self-citations are used as these can affect researchers differently. © 2010 The Author(s).


Garcia-Carpintero E.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Granadino B.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Plaza L.M.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2010

This paper analyses the nationalities of the editorial board members of the top 20 journals (according to their impact factor in the ISI Journal Citation Report, Science Edition 2005) serving 15 scientific disciplines. A total of 281 journals were analysed (some journals crossed disciplinary boundaries) and 10,055 of their editorial board members were identified. Some 53% of board members were from the United States. Europe provided 32%, with the United Kingdom making the greatest contribution (9. 8%). The analysis of scientific output by nationality in these journals showed a significant correlation, in all disciplines, with the representation of the corresponding nations on the editorial boards. The composition of editorial boards may therefore provide a useful indicator for measuring a country's international scientific visibility. The present results should be taken into account in the design of national policies with the aim of enhancing the presence of a country's most prestigious scientists on the editorial boards of the main international journals. © 2010 Akadémiai Kiadó, Budapest, Hungary.


Costas R.,Leiden University | Van Leeuwen T.N.,Leiden University | Bordons M.,Institute Estudios Documentales Sobre Ciencia y Tecnologia IEDCYT
Journal of the American Society for Information Science and Technology | Year: 2010

The authors set forth a general methodology for conducting bibliometric analyses at the micro level. It combines several indicators grouped into three factors or dimensions, which characterize different aspects of scientific performance. Different profiles or "classes" of scientists are described according to their research performance in each dimension. A series of results based on the findings from the application of this methodology to the study of Spanish National Research Council scientists in Spain in three thematic areas are presented. Special emphasis is made on the identification and description of top scientists from structural and bibliometric perspectives. The effects of age on the productivity and impact of the different classes of scientists are analyzed. The classificatory approach proposed herein may prove a useful tool in support of research assessment at the individual level and for exploring potential determinants of research success. © 2010 ASIS&T.


Morillo F.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Aparicio J.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Gonzalez-Albo B.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Moreno L.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2013

A new semi-automatic method is presented to standardize or codify addresses, in order to produce bibliometric indicators from bibliographic databases. The hypothesis is that this new method is very trustworthy to normalize authors' addresses, easy and quick to obtain. As a way to test the method, a set of already hand-coded data is chosen to verify its reliability: 136,821 Spanish documents (2006-2008) downloaded previously from the Web of Science database. Unique addresses from this set were selected to produce a list of keywords representing various institutional sectors. Once the list of terms is obtained, addresses are standardized with this information and the result is compared to the previous hand-coded data. Some tests are done to analyze possible association between both systems (automatic and hand-coding), calculating measures of recall and precision, and some statistical directional and symmetric measures. The outcome shows a good relation between both methods. Although these results are quite general, this overview of institutional sectors is a good way to develop a second approach for the selection of particular centers. This system has some new features because it provides a method based on the previous non-existence of master lists or tables and it has a certain impact on the automation of tasks. The validity of the hypothesis has been proved taking into account not only the statistical measures, but also considering that the obtaining of general and detailed scientific output is less time-consuming and will be even less due to the feedback of these master tables reused for the same kind of data. The same method could be used with any country and/or database creating a new master list taking into account their specific characteristics. © 2012 Akadémiai Kiadó, Budapest, Hungary.


Morillo F.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Santabarbara I.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT | Aparicio J.,Institute Estudios Documentales sobre Ciencia y Tecnologia IEDCYT
Scientometrics | Year: 2013

The correct attribution of scientific publications to their true owners is extremely important, considering the detailed evaluation processes and the future investments based upon them. This attribution is a hard job for bibliometricians because of the increasing amount of documents and the raise of collaboration. Nevertheless, there is no published work with a comprehensive solution of the problem. This article introduces a procedure for the detailed identification and normalisation of addresses to facilitate the correct allocation of the scientific production included in databases. Thanks to our long experience in the manual normalisation of addresses, we have created and maintained various master lists. We have already developed an application to detect institutional sectors (issued in a previous paper) and now we analyse the details of particular institutions, taking advantage of our master tables. To test our methodology we have implemented it in a Spanish data set already manually codified (95,314 unique addresses included in the year 2008 on the Web of Science databases). This data was analysed with a full text search against our master lists, giving optional codes for each address and choosing which one could be automatically encoded and which one should be reviewed manually. The results of the implementation, comparing the automatic versus manual codes, showed 87 % automatically codified records with 1. 9 % of error. We should review manually only 13 %. Finally, we applied the Wilcoxon non-parametric test to show the validity of the methodology, comparing detailed codes of centres already encoded with the automatically encoded ones, and concluding that their distribution was similar with a significance of 0. 078. © 2013 Akadémiai Kiadó, Budapest, Hungary.

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