Buscar
Mostrando ítems 31-40 de 76
Artículo
División proporcional con múltiples referencias. Aplicación al caso de agregación y actualización de probabilidades
(Asociación Española de Profesores Universitarios de Matemáticas para la Economía y la Empresa (ASEPUMA), 2010)
En este trabajo se considera una extensión de los problemas clásicos de reparto en los que las referencias relevantes de cada agente están expresadas por un vector, es decir, problemas de división con múltiples referencias. ...
Artículo
Polimorfismos de color floral: causas e implicaciones evolutivas
(Asociación Española de Ecología Terrestre, 2014)
En este artículo se revisa el estado actual de conocimiento sobre la capacidad de algunas especies de presentar individuos con diferente coloración de los pétalos, tanto dentro como entre poblaciones. Tras un repaso ...
Artículo
Cooperative location games based on the minimum diameter spanning Steiner subgraph problem
(Elsevier, 2012-05)
In this paper we introduce and analyze new classes of cooperative games related to facility location models. The players are the customers (demand points) in the location problem and the characteristic value of a coalition ...
Artículo
The prolific polytypism of silicon carbide
(International Union of Crystallography, 2013-02)
A worked example of polytypism is presented, aimed at assisting undergraduates in the learning and instructors in the teaching of this topic. In particular, this crystallography concept, not necessarily obvious for beginners, ...
Artículo
Existence of homoclinic connections in continuous piecewise linear systems
(American Institute of Physics, 2010-03)
Numerical methods are often used to put in evidence the existence of global connections in differential systems. The principal reason is that the corresponding analytical proofs are usually very complicated. In this work ...
Artículo
Contemporary training methodologies based on evolutionary artificial neural networks with product and sigmoid neurons for classification
(IOP Press, 2016-04)
This thesis introduces three contributions to train feed-forward neural network models based on evolutionary computation for a classification task. The new methodologies have been evaluated in three-layered neural models, ...
Artículo
Uncertain pollination environment promotes the evolution of a stable mixed reproductive system in the self-incompatible Hypochaeris salzmanniana (Asteraceae)
(Oxford University Press, 2017)
Background and aims The transition from outcrossing to selfing is a repeated pattern in angiosperm diversification and according to general theory this transition should occur quickly and mixed reproductive systems should ...
Artículo
Morph ratio variation and sex organ reciprocity in style-dimorphic Narcissus assoanus
(University of Chicago, 2012-10)
The maintenance of floral polymorphisms depends on rates and efficiency of cross-pollination within and among mating types in relation to their relative frequency. Here, we examine whether stigma-anther reciprocity in ...
Artículo
Common fixed points for multimaps in metric spaces
(SpringerOpen, 2010)
We discuss the existence of common fixed points in uniformly convex metric spaces for singlevalued pointwise asymptotically nonexpansive or nonexpansive mappings and multivalued nonexpansive, ∗-nonexpansive, or ε-semicontinuous ...
Artículo
The stability of a horizontal interface between air and an insulating liquid subjected to charge injection
(American Institute of Physics, 2014)
This paper presents the linear stability analysis of an interface between air and an insulating liquid subjected to a perpendicular electric field, in the presence of unipolar injection of charge. Depending on the ...