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)]

1.1.1_13 REDC_visibilidad_web_universidades (2010).pdf

Download (615Kb) | Preview

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


"SEEK" links will first look for possible matches inside E-LIS and query Google Scholar if no results are found.

Aguillo, I. F., y Granadino, B. (2006): Indicadores web para medir la presencia de las universidades en la red. Revista de universidad y sociedad del conocimiento, vol. 3 (1), 68-75.

Aguillo, I. F.; Granadino, B.; Ortega, J. L, y Prieto, J. A. (2006): Scientifi c research activity and Communications measured with cybermetrics indicators. Journal of the American Society for information science and technology, vol. 57 (10), 1296-1302.

Aguillo, I. F.; Ortega, J. L., y Fernández, M. (2008): Webometric Ranking of World Universities: introduction, methodology, and future developments. Higher education in

Europe, vol. 33 (2/3), 233-244.

Altbach, P.G. (2006): GATS Redux: The WTO and Higher Education Returns to Center

Stage. En Altbach, Philip G. (ed.), International Higher education: refl exions on Policy and Practice. Center for International Higher Education, Boston, EE.UU.

Bar-Ilan, J. (1999), Search engine results over time – A case study on search engine stability, Cybermetrics, 2/3. Available:

Bar-Ilan, J. (2002): Methods for measuring search engine performance over time, Journal

of the American Society for Information Science and Technology, 53 (4): 308-319.

Bar-Ilan, J. (2003): The use of web search engines in information science research. Annual review of information science and technology, vol. 38, 231-288.

Bar-Ilan, J., y Peritz, B. C. (2004): Evolution, continuity, and disappearance of documents on a specific topic on the Web: A longitudinal study of informetrics. Jasist, vol. 55(11), 980-990.

Berlin Principles on Ranking of Higher Education Institutions (2006): Institute for Higher Education Institut (IHEP). [consulta 20-10-2009].

Brewington, B. E., y Cybenko, G. (2000): How dynamic is the Web? Computer Networks, vol. 33 (1-6), 257-276.

Cho, Y., y García-Molina, H. (2000): The evolution of the web and implications for an

incremental crawler. Proceedings of the 26th International Conference on Very Large Data Bases, 200-209.

Fetterly, D.; Manasse, M.; Najork, M., y Wiener, J. (2003): A large scale study of the evolution of web pages, Proceedings of the Twelfth International Conference on World

Wide Web, 669-678.

Hazelkorn, E. (2007): The impact of league tables and ranking systems on Higher Education decision making. Higher education management and policy, vol. 19 (2).

Ingwersen, P. (1998): The calculation of web impact factors. Journal of Documentation,

vol. 54(2), 236-243.

Koehler, W. (1999): An analysis of web page and web site constancy and permanence,

Journal of the American Society for Information Science, vol. 50 (2), 162-180.

Koehler, W. (2002): Web page change and persistence -4- year longitudinal web study,

Journal of the American Society for Information Science and Technology, vol. 53 (2), 162-171.

Koehler, W. (2004): A longitudinal study of Web pages continued a consideration of document persistence, Information Research, vol. 9 (2).

paper174.html [consulta 20-10-2009].

Lawrence, S., y Giles L. (1999): Accesibility of information on the Web. Nature, vol. 400, 107-109.

Noruzi, A. (2006a): The Web Impact Factor: a critical review. The Electronic Library, vol.

24 (4), 490-500.

Noruzi, A. (2006b): Web presence and impact factors for Middle-Eastern countries. Online,

vol. 30 (2), 22-28.

Orduña-Malea, E.; Serrano-Cobos, J., y Lloret-Romero, N. (2009): Las universidades públicas españolas en Google Scholar: presencia y evolución de su publicación académica web. El profesional de la información, vol. 18 (5), 493-500.

Ortega, J. L., y Aguillo, Isidro-F. (2007): La web académica española en el contexto del

Espacio Europeo de Educación Superior: estudio exploratorio. El profesional de la

información, vol. 16 (5), 417-425.

Ortega, J. L.; Aguillo, I. F., y Prieto, J. A. (2006): Longitudinal study of contents and elements in the scientifi c Web environment. Journal of Information Science, vol. 32 (4), 344-351.

Payne, N., y Thelwall, M. (2007): A longitudinal study of academic webs: growth and stabilization. Scientometrics, vol. 71 (3), 523-539.

Rocki, M. (2005): Statistical and mathematical aspects of rankings: lessons from Poland. Higher education in Europe, v. 30 (2), 173-181.

Rousseau, R. (1999), Time evolution of the number of hits in keyword searches on the

Internet, Post Conference Seminar – Cybermetrics’99 at the Seventh International Conference on Scientometrics and Informetrics, July 9 1999, Colima, Mexico. Available: [consulta 20-10-2009].

Smith, A., y Thelwall, M. (2004): Web impact factor for Australasian universities. Scientometrics, vol. 54 (3), 363-380.

Stuart, D. (1995): Reputational rankings: background and development. New directions for institutional research, vol. 88.

Thelwall, M. (2001): Extracting macroscopic information from web links, Journal of the

American Society for Information Science and Technology, vol. 52 (13), 1157-1168.

Thelwall, M., y Aguillo, I. F. (2003): La salud de las web universitarias españolas. Revista española de documentación científi ca, vol. 26 (3), 291-305.

Usher, A., y Savino, M. (2006): A World of Difference: A Global Survey of University League Tables. Toronto, Ont; Educational Policy Institute, 63.

Actions (login required)

View Item View Item