University of Seville

About: University of Seville is a education organization based out in Seville, Andalucía, Spain. It is known for research contribution in the topics: Population & Model predictive control. The organization has 20098 authors who have published 47317 publications receiving 947007 citations. The organization is also known as: Universidad de Sevilla.

Fair allocation of transmission power losses

Abstract: In this paper, the issue of how transmission power losses should be allocated is addressed. First, it is shown that existing methodologies allocate interaction components regardless of the size of the involved partners. Then, several alternatives to split those terms are suggested which somehow take into account the relative contribution of each transaction. Although the ideas are presented by resorting to unbundled branch power flows, the proposed schemes are applicable on a nodal basis. A real example is finally included showing that the total losses assigned to a transaction may differ significantly depending on the allocation methodology adopted.

Flattening, squeezing and the existence of random attractors

Abstract: The study of qualitative properties of random and stochastic differential equations is now one of the most active fields in the modern theory of dynamical systems. In the deterministic case, the properties of flattening and squeezing in infinite-dimensional autonomous dynamical systems require the existence of a bounded absorbing set and imply the existence of a global attractor. The flattening property involves the behaviour of individual trajectories while the squeezing property involves the difference of trajectories. It is shown here that the flattening property is implied by the squeezing property and is in fact weaker, since the attractor in a system with the flattening property can be infinite-dimensional, whereas it is always finite-dimensional in a system with the squeezing property. The flattening property is then generalized to random dynamical systems, for which it is called the pullback flattening property. It is shown to be weaker than the random squeezing property, but equivalent to pullback asymptotic compactness and pullback limit-set compactness, and thus implies the existence of a random attractor. The results are also valid for deterministic non-autonomous dynamical systems formulated as skew-product flows.

Human securin interacts with p53 and modulates p53-mediated transcriptional activity and apoptosis.

Abstract: Human securin interacts with p53 and modulates p53-mediated transcriptional activity and apoptosis