Presencia y visibilidad web de las universidades públicas españolas

Orduña-Malea, Enrique and Serrano-Cobos, Jorge and Ontalba-Ruipérez, José-Antonio and Lloret-Romero, Nuria Presencia y visibilidad web de las universidades públicas españolas. Revista Española de Documentación Científica, 2010, vol. 33, n. 2, pp. 246-278. [Journal article (Print/Paginated)]

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English abstract

The evolution of size and visibility of the Spanish public universities websites according to various search engines (Google, Yahoo!, Live/Bing y Exalead) was studied from January to June 2009. Additionally, the article proposes two indicators for understanding the importance of a web domain: the Relative representativeness size factor (Rs) and the Relative representativeness visibility factor (Rv). These indicators, which consider the number of both documents and links, respectively, during a specifi cinterval of time are intended to be applied in the design and construction of university rankings based on cybermetric techniques. The results confi rm that the size differences among academic web domains vary signifi cantly depending on the search engine used; therefore the use of a single web browser cannot supply reliable information about the actual size of the web domain. Moreover, the use of combined values from the mean obtained from each search engine does not offer reliable results, given the variance of data obtained from the different search engines, as well as the index differences of Rs. The differences concerning visibility were smaller, but signifi cant nonetheless. Rs and Rv indicators were found to provide useful and consistent information about the level of development of universities on the Web during a given time interval. There was also a positive correlation between these two indicators on both Yahoo! and Exalead, confi rming the relationship between the number of documents of an academic web domain and the number of links it receives over time.

Spanish abstract

Se estudia la evolución del tamaño y visibilidad de los dominios web de las universidades públicas españolas desde enero hasta junio de 2009 en función de diversos buscadores web (Google, Yahoo!, Live/Bing y Exalead). Asimismo, se proponen el factor de representatividad relativa media en tamaño (Rs) y el factor de representatividad relativa media en visibilidad (Rv) como indicadores para conocer la importancia de un dominio, en número de documentos y de enlaces externos respectivamente, durante un intervalo temporal, con el propósito de ser aplicados en el diseño y construcción de rankings de universidades basados en técnicas cibermétricas. Los resultados confi rman que las diferencias de tamaño entre los dominios académicos web son muy grandes según el buscador utilizado, por lo que el uso de un único buscador no permite conocer de forma fi able el tamaño real de un dominio web. Además, el empleo de valores combinados a partir de la media obtenida en cada buscador no ofrece resultados fi ables, dada la varianza de datos obtenida entre buscadores así como los diferentes índices obtenidos de Rs. Las diferencias en visibilidad son menores aunque igualmente signifi cativas. Se comprueba que los indicadores Rs y Rv proporcionan información útil y coherente acerca del grado de evolución de las universidades en la Web durante un intervalo temporal determinado. Se obtiene asimismo una correlación positiva entre estos dos indicadores tanto en Yahoo! como en Exalead, que confi rma la relación entre el tamaño documental de un dominio académico web y el número de enlaces que recibe a lo largo del tiempo.

Item type: Journal article (Print/Paginated)
Keywords: Universidades públicas españolas, Dominios académicos web, Tamaño web, Visibilidad web, España, Ranking de universidades, Spanish public universities, academic web domains, Web size, Web visibility, Spain, University ranking
Subjects: B. Information use and sociology of information.
B. Information use and sociology of information. > BA. Use and impact of information.
H. Information sources, supports, channels.
H. Information sources, supports, channels. > HP. e-resources.
H. Information sources, supports, channels. > HQ. Web pages.
L. Information technology and library technology.
L. Information technology and library technology. > LC. Internet, including WWW.
L. Information technology and library technology. > LS. Search engines.
Depositing user: Enrique Orduna-Malea
Date deposited: 12 Jul 2012
Last modified: 14 Dec 2012 22:52
URI: http://hdl.handle.net/10760/17330

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