We present a Theory of Objects based on the original functional ςcalculus by Abadi and Cardelli [1] but with an additional parameter to methods. We prove confluence of the operational semantics following the outline of Nipkow’s proof of confluence for the λ-calculus reusing his general Commutation.thy [4] a generic diamond lemma reduction. We furthermore formalize a simple type system for our ς...

=XxR%XUVWHLQ 3HUF\0D\WD7ULVWiQ La Revista Peruana de Medicina Experimental y Salud Pública (RPMESPKDVLGRDFHSWDGDDSDUWLUGHODxR HQMEDLINE/Index Medicus, la base de datos internacional de mayor cobertura e importancia en salud a

: This paper proposes a Multi-objective C-means Data Clustering algorithm using Self-Adaptive Differential Evolution (DE) for improving the performance of data clustering by introducing three data clustering validity indices.. The proposed algorithm composed of three objectives: including the symmetry-index to maximize similarity within clusters, the compactness index to maximize dissimilarity ...

We measured 2188 oak trees (Quercus spp.) on the Hoosier National Forest in southern Indiana before and 1, 5, and 10 years after clear-cutting to determine the influence of parent tree age, diameter breast height, and site index on the probability that there was one or more living sprouts per stump: (i) 1 year after clear-cutting (sprouting probability) or (ii) that were competitively successfu...

We consider combinatorial aspects of λ-terms in the model based on de Bruijn indices where each building constructor is of size one. Surprisingly, the counting sequence for λ-terms corresponds also to two families of binary trees, namely black-white trees and zigzag-free ones. We provide a constructive proof of this fact by exhibiting appropriate bijections. Moreover, we identify the sequence o...

For each infinite series of the classical Lie groups of type B, C or D, we introduce a family of polynomials parametrized by the elements of the corresponding Weyl group of infinite rank. These polynomials represent the Schubert classes in the equivariant cohomology of the corresponding flag variety. They satisfy a stability property, and are a natural extension of the (single) Schubert polynom...

We present a solution to the PoplMark challenge designed by Aydemir et al., which has as a goal the formalization of the metatheory of System F<:. The formalization is carried out in the theorem prover Isabelle/HOL using an encoding based on de Bruijn indices. We start with a relatively simple formalization covering only the basic features of System F<:, and explain how it can be extended to al...

Résumé — Avec le développement des systèmes de décisionnel en générale et les entrepôts de données de manière particulière, il est devenu primordiale d’avoir une visibilité de la conception de l’entrepôt de données avant sa création, et cela vu l’importance de l’entrepôt de données qui se considère la source unique des données donnant sens à la décision. Dans un système de décisionnel, le bon f...

Tâ ÇÉÅ wx W|xâ Revue des Études de la Langue Française Revue semestrielle de la Faculté des Langues Étrangères de l'Université d'Ispahan Cinquième année, N° 8 Printemps-Eté 2013, ISSN 2008- 6571 ISSN électronique 2322-469X Cette revue est indexée dans: Ulrichsweb: global serials directory http://ulrichsweb.serialssolutions.com Doaj: Directory of Open Access Journals http://www.doaj.org ...

La obtención de )factor de impacto* (FI) por la revista Medicina Intensiva, supone un paso importante en el proceso de crecimiento y de reconocimiento de la misma y a través de ella, de expansión de nuestra especialidad. Cuando a mediados de 2006 se produjo el relevo en la dirección de Medicina Intensiva, todo el equipo editorial nos propusimos varios objetivos; uno de ellos fue considerado un ...