Both Mexico and Peru have experienced significant oscillations in incomes and standards of living since the 1980s (Edwards 1995; Robles 1997; Rodríguez and Abler 1998). Due in part to a significant drop in world oil prices and huge external debts on the part of both the Mexican government and private enterprises, Mexico entered a severe economic crisis in the early 1980s. The crisis was charact...

This paper considers the quadratic stabilization problem of multi-input planar switched systems. Based on some basic lemmas, some uniformly quadratic stabilization criteria are established. Furthermore, an example is given to illustrate our results in this

We determined the added enthalpic and entropic contributions of protective osmolytes to the folding of a model peptide into its native beta-hairpin state. In contrast to entropically driven steric "crowding", this study shows that sugars and polyols can act as protective osmolytes by primarily diminishing the unfavourable enthalpic contribution to folding.

We review the mechanism of gaugino condensation in the framework of the d = 10 heterotic string and its d = 11 extension of Horava and Witten. In particular we emphasize the relation between the gaugino condensate and the flux of the antisymmetric tensor fields of higher dimensional supergravity. Its potential role for supersymmetry breakdown and moduli stabilization is investigated.

Let G be the group of projectivities stabilizing a unital U in PG(2, q2) and let A,B be two distinct points of U . In this paper we prove that, if G has an elation group of order q with center A and a group of projectivities stabilizing both A and B of order a divisor of q − 1 greater than 2(√q − 1), then U is an ovoidal Buekenhout–Metz unital. From this result two group theoretic characterizat...

The phase synchronization problem requires each node to infinitely transfer from one phase to the next one under the restriction that at most two consecutive phases can appear among all nodes. In this paper, we propose a self-stabilizing algorithm under the parallel execution model to solve this problem for semi-uniform systems of general graph topologies. The proposed algorithm is memory-effic...