Martín-Martín, Alberto; Orduña Malea, Enrique; Ayllon, Juan M.; Delgado-López-Cózar, Emilio(Consejo Superior de Investigaciones Científicas (CSIC), 2016)
The main objective of this paper is to identify and define the core characteristics of the set of highly-cited documents in Google Scholar (document types, language, free availability, sources, and number of versions), on ...
Martín-Martín, Alberto; Orduña Malea, Enrique; Ayllon, Juan M.; Delgado-López-Cózar, Emilio(SpringerAkadémiai Kiadó, 2016-06)
A study released by the Google Scholar team found an apparently increasing fraction of citations to old articles from studies published in the last 24 years (1990-2013). To demonstrate this finding we conducted a complementary ...
[EN] The main objective of this paper is to empirically test whether the identification of highly cited documents through Google Scholar is feasible and reliable. To this end, we carried out a longitudinal analysis ...
Orduña Malea, Enrique; Martín-Martín, Alberto; Delgado-López-Cózar, Emilio(Departmento de Publicaciones del CSIC, 2017-10)
[ES] Google Scholar es un motor de búsqueda académico y herramienta de descubrimiento lanzada por Google (ahora Alphabet) en noviembre de 2004. El hecho de que para cada registro bibliográfico se proporcione información ...
[EN] New sources of citation data have recently become available, such as Microsoft Academic, Dimensions, and the OpenCitations Index of CrossRef open DOI-to-DOI citations (COCI). Although these have been compared to the ...
Orduña Malea, Enrique; Ayllon, Juan M.; Martín-Martín, Alberto; Delgado-López-Cózar, Emilio(SpringerAkadémiai Kiadó, 2015-09)
The emergence of academic search engines (mainly Google Scholar and Microsoft Academic Search) that aspire to index the entirety of current academic knowledge has revived and increased interest in the size of the academic ...
[EN] The main goal of this work is to verify the existence of diverse behavior patterns in academic production and impact, both among members of the same scientific community (inter-author variability) and for a single ...
[ES] ResearchGate es una de las más importantes redes sociales académicas, con más de 9 millones de usuarios y 80 millones de
documentos. Además de importantes herramientas de networking social académico y ofertas de ...
Since repositories are a key tool in making scholarly knowledge open access (OA), determining their web presence and visibility on the Web (both are proxies of web impact) is essential, particularly in Google (search engine ...
Orduña Malea, Enrique; Ayllón, Juan M; Martín-Martín, Alberto; Delgado-López-Cózar, Emilio(Emerald, 2017)
[EN] Purpose - Google Scholar Citations (GSC) provides an institutional affiliation link which groups together authors who belong to the same institution. The purpose of this paper is to ascertain whether this feature is ...
The main goal of this article is to describe the purpose and content of a new branch of bibliometrics: ALMetrics (Author-Level Metrics). ALMetrics is focused on the quantitative analysis of an author's performance by ...
Orduña Malea, Enrique; Martín-Martín, Alberto; Ayllón, Juan M; Delgado-López-Cózar, Emilio(Emerald, 2014)
Purpose - The purpose of this paper is to describe the obsolescence process of Microsoft Academic Search (MAS) as well as the effects of this decline in the coverage of disciplines and journals, and their influence in the ...
Orduña Malea, Enrique; Delgado-López-Cózar, Emilio(Ediciones Profesionales de la Informacion SL, 2018)
[ES] Tras constatar los cambios que se están produciendo en el mundo de las bases de datos bibliográficas
empleadas para la búsqueda y evaluación científica, este
trabajo se centra en realizar una descripción de la ...