La voz de la academia: reflexiones sobre periodismo y comunicación SciELO - Scientific Electronic Library Online vol.29 issue56 Mexico in view of the Information and Knowledge Society: Data and Numbers Creating, implementing, and validating a virtual learning model in web 2.0 technologies for higher education. author index subject index articles search Home Page alphabetic serial listing Services on Demand Journal SciELO Analytics Article Spanish (pdf) Article in xml format Article references How to cite this article SciELO Analytics Automatic