All fours

A short stage play in the absurdist tradition. It was published by the Universidad Autónoma de Madrid, Universidad Nacional Autónoma de México and the University of North Carolina-Chapel Hill in "Movimiento Paroxista Revista Literatura" 1(1), 2011, pp. 17-25.

Structural damage detection using frequency response functions and neural networks

This paper illustrates the damage identification and condition assessment of a three story bookshelf structure using a new frequency response functions (FRFs) based damage index and Artificial Neural Networks (ANNs). A major obstacle of using measured frequency response function data is a large size input variables to ANNs. This problem is overcome by applying a data reduction technique called principal component analysis (PCA). In the proposed procedure, ANNs with their powerful pattern recognition and classification ability were used to extract damage information such as damage locations and severities from measured FRFs. Therefore, simple neural network models are developed, trained by Back Propagation (BP), to associate the FRFs with the damage or undamaged locations and severity of the damage of the structure. Finally, the effectiveness of the proposed method is illustrated and validated by using the real data provided by the Los Alamos National Laboratory, USA. The illustrated results show that the PCA based artificial Neural Network method is suitable and effective for damage identification and condition assessment of building structures. In addition, it is clearly demonstrated that the accuracy of proposed damage detection method can also be improved by increasing number of baseline datasets and number of principal components of the baseline dataset.

Conference report : ‘For the Socially Responsible University’. Reflections on Universidad 2014, the 9th International Higher Education congress in Havana, Cuba, February 2014

This article describes salient aspects of 'Universidad', the 9th International Higher Education conference held in Havana, Cuba, in February 2014. Addressing the conference theme, 'For the Socially Responsible University', participants debated the university's capacity to lead societies in matters of knowledge creation and diffusion, and discussed how it could help governments in the quest for solutions to inequality and exclusion. A particularly interesting panel was one that discussed the social commitment of Hugo Chavez, the late president of Venezuela, and his work to support the expansion of education.