making the triangle exact at each vertex. Given this, the homomorphism d = jk : E → E satisfies dd = jkjk = 0 since kj = 0 The derived couple of (A,E, i, j, k) is (A′, E ′, i′, j′, k′), where E ′ = Ker(d)/Im(d), A′ = iA, i′(a) = ia, j′(ia) = [ja], k′[e] = ke. To see that j′ is well defined, suppose ia = ib: then exactness implies that b = a+ ke for some e ∈ E, and then [jb] = [ja] + [jke] = [ja...

IZA DP No. 11178 NOVEMBER 2017 Sorting out Neighbourhood Effects Using Sibling Data Previous research has reported evidence of intergenerational transmission of both neighbourhood status and social and economic outcomes later in life; parents influence where their children live as adults and how well they do later in life in terms of their income. However, interactions between the individual, t...

In this paper, we present a universal control technique, the non-holonomic control, which allows us to impose any arbitrarily prescribed unitary evolution to any quantum system through the alternate application of two well-chosen perturbations.

the work deals with universal control formula which provides output global asymptotic stability for affine in control nonlinear system. Development of this result to input-to-output stability (IOS) is also considered. Copyright © 2002 IFAC

C a population that is maintained at 2N genes for a large number of generations. Assume that each gene in each generation has a unique parental gene, the parental gene is equally likely to be any of the genes in the preceding generation, and the choices of parents for different genes are independent. Then two genes in the same generation will have the same parent with probability 1/2N and will ...

Résumé. Cet article propose une méthodologie pour la visualisation et la classification des parcours de vie. Plus spécifiquement, nous considérons les parcours de vie d’individus suisses nés durant la première moitié du XXème siècle en utilisant les données provenant de l’enquête biographique rétrospective menée en 2002 par le Panel suisse de ménages. Nous nous sommes concentrés sur ces événeme...

its intermediary causes, but rather the existence of hostile and aggressive parental behavior during childhood (Keister, 2005; Amato, 2005). Accordingly, divorce may just be another measure of a more significant cause of diminished income attainment among children of divorce: poorly managed anger by parents. The present study seeks to explore these complex relationships and establish that the p...

Children’s Schooling and Parental Migration: Empirical Evidence on the “Left Behind” Generation in Albania This article investigates the long-term effects of parental migration abroad on the schooling of children left behind in Albania. Although parents' migration usually benefits children economically, the lack of parental care may cause relational and psychological problems that may affect ch...

The process of adopting a child is “not for the faint of heart.” This is what we were told the first time we, as a couple, began this process. Part of the challenge lies in fulfilling the licensing requirements for adoption, which, beyond the usual home study, can include mandatory participation in parenting classes. The question naturally arises for many people who are subjected to these requi...