This article analyses family emancipation and the transition from school to work in the context of transition to adulthood in Catalonia, and discusses some central issues of youth sociology. The data used have been provided by the 2002 Catalan Young People Survey (Casal et al., 2004), carried out in 2002 and 2003, which was commissioned by the Catalan government and managed by the Education and...

Traditional code optimization techniques treat loops as nonpredictable structures and do not consider expressions containing array accesses for optimization. We show that the polyhedron model can be used to implement code placement techniques that exploit equalities of expressions that hold between loop iterations. We also present preliminary results for a simple example.

Suppose τ is a train track on a surface S. Let C (τ) be the set of isotopy classes of simple closed curves carried by τ. Masur and Minsky [2004] prove that C (τ) is quasi-convex inside the curve complex C (S). We prove that the complement, C (S)−C (τ), is quasi-convex.

The effectiveness of the in ̄uenza vaccine is well established, although the uptake among older people is suboptimal (NHS Centre for Reviews and Dissemination, 1996). Few older people consider themselves to be at serious risk of adverse consequences of ̄u; fear of sideeffects is the main reason for not being vaccinated (Cornford & Morgan, 1999). Furthermore, in primary care, in ̄uenza vaccination ...