An approximation scheme to obtain the period for large amplitude oscillations of a simple pendulum is analysed and discussed. The analytical approximate formula for the period is the same as that suggested by Hite (2005 Phys. Teach. 43 290), but…

This paper introduces the development of an infrastructure to study highly complex systems of Ambient Intelligence (AmI) which involve a large number of users. The key ideas about the development of a multi-agent based simulation (MABS) for such purposes, Ubik,…

The one who does not last does not survive! Says an old principle rarámuri, ethnic
group located in the Saw Tarahumara, inside the Western Mother Saw of the State
Chihuahua in Mexico. Immersed in an ecologically hard environment for the…

There is considerable interest in real-world formation-maintenance tasks, where robots move together while maintaining a geometric shape. This interest is motivated by promise of robustly and efficiently moving multiple robots along a path, guided by a human operator. This paper…

The use of bleaching techniques is perhaps one of the most popular methods of creating phase holograms from holographic emulsions. In this paper we will study the influence of the different experimental conditions on the refractive index modulation created inside…

The purpose of this study was to evaluate the effect of a NSAID, Diclofenac sodium, and an analgesic, Paracetamol in the reduction of pain and in the passive and active range of ankle motion of severe sprains. Ninety patients, 18…

Whole body vibration (WBV) is increasingly being used in several physical therapy settings. In order to evaluate the ability of WBV to affect bone mineral component, thirty-six young (mean age 25.3 ± 5.26 yrs) healthy females underwent eight weeks of…

To analyze the present status of rheumatological research in Spain, three indicators have been evaluated: use of the difference study designs, use of statistical techniques and relevance of the studies. This last point was determined by the comparison of the…

En el presente artículo abordamos la utilización de un Entorno Virtual de Aprendizaje para optimizar la gestión de la información y comunicación de la información entre los agentes implicados en la asignatura Practicum. Inicialmente presentamos una revisión sobre el tratamiento…

In this review, a comparison between the Lewis acid catalysed and organocatalysed 1,3-dipolar cycloaddition is presented with special focus on the enantioselective synthesis of five-membered hetero- or carbocyclic systems, is described. These reactions exhibit very interesting features, but the most…