La concepción sistémica en la historia, permite abrir un
abanico de posibilidades en nuestro intento de interpretar y
comprender la complejidad de las dinámicas históricas. Dicha
concepción admite que los hechos y los procesos históricos se
conviertan en fenómenos irreversibles…

Using the underlying idea of the current-mode control, a new dynamical, sliding-mode control for the boost dc-dc converter is proposed. Such controller is easy to design, robust under load and input voltage variations, exhibits fast response, does not depend on…

Building off the work of Mark Granovetter and Nancy Howell Lee, this thesis observes the employment search networks of Princeton University seniors. I interviewed thirty-five students who were actively or had recently completed searches for employment and constructed visual representations…

Following the deaths of Victoria Climbié and of Peter Connelly (Baby P) the media has raged about social work competence, the public have expressed dismay and the government has responded with proposals designed to alter practice procedures. Altering procedures gives…

Investigates informal leisure uses of technology, including developing home pages, building special interest sites, surfing the Net and participating in electronic communities.

Les élèves dyslexiques éprouvent de grandes difficultés à lire et à écrire. Leurs difficultés en production orthographique sont reconnues pour être persistantes. Elles peuvent être expliquées par un déficit des procédures phonologiques. Or, pour orthographier une langue alphabétique comme le…

The purpose of this paper is to introduce patent litigation as a leading indicator of market
growth. We model the intensity of patent litigation and the market growth for the
personal computer and cellular phone market in the US. By…

We report the creation of strained silicon on silicon (SSOS) substrate technology. The method uses a relaxed SiGe buffer as a template for inducing tensile strain in a Si layer, which is then bonded to another Si handle wafer. The…

Tennis is a sport that is characterized by intermittent dynamics, with intervallic moderate and high-intensity efforts due to repetitive actions of short-duration and high intensity. This review analyzes aspects such as the game's temporal structure, oxygen consumption, heart rate, lactate…

Aujourd’hui, on parle du Web social. Facebook par exemple, porte bien la marque de son époque ; il est devenu le réseau social le plus convoité dans le monde. Toutefois, l’entreprise a été souvent critiquée en raison de sa politique…