* Corresponding author. E-mail: ruben.gonzalez@upsam.es. On November 24, 2008, Ruben Gonzalez Crespo defended his PhD thesis at Pontifical University of Salamanca, titled: “Middleware architectures to adapt online contents for achieving success in changing environments using emerging techniques”. The research was funded by the Pablo VI Foundation. Ruben Gonzalez Crespo defended his dissertation in a publicly open presentation held in the College of Engineering ad Architecture at the Pontifical University of Salamanca, Madrid campus, and was able to comment on every question raised by his thesis committee and the audience. The thesis was supervised by his advisors, Luis Joyanes Aguilar and Oscar Sanjuan Martinez, and the rest of his thesis committee, Mateo Valero Cortes, Juan Manuel Cueva Lovelle, Vidal Alonso Secades, Javier Bustamante Donas and Alfonso Lopez Rivero. The thesis has been read and approved by his thesis committee, receiving the highest rating. All of them were present at the presentation.