The computational metaphor which proposes the comparison of processes of mind to realizable or imaginable computer activities suggests a number of educational concerns. This paper discusses some of those concerns including procedural modes of knowledge representation and control knowledge ??owing…

This paper deals with the "Calculus of Knowledge", an extension of the propositional calculus in which one may reason about what other people know. Semantic and Syntactic systems are developed, certain theorems are proven, and a formal solution in the…

The bivalve Limnoperna fortunei (Dunker, 1857), also called golden mussel, is native to Asia but becoming dispersed around the world. The golden mussel resembles the invasive dreissenid bivalves in many respects, and although much less studied it evidently has broader…

There are multiple sorts of reasoning by analogy between two domains; the one with which we are concerned is a type of contextual analogy. The purpose of this paper is to see whether two domains that look analogous would be…

Humans recognize optical reflectance properties of surfaces such as metal, plastic, or paper from a single image without knowledge of illumination. We develop a machine vision system to perform similar recognition tasks automatically. Reflectance estimation under unknown, arbitrary illumination proves…

En este trabajo se investigan nuevas distancias entre fonemas y entre palabras que se
han usado para predecir si dos palabras del vocabulario de un sistema de reconocimiento del
habla se van a confundir o no. La distancia entre palabras…

Este trabajo pretende ser una contribución al conocimiento de las sociedades prehispánicas del Noroeste argentino entre el 1000 d.C. y el 1536 d.C. El objetivo es caracterizar la tecnología lítica entendida como un fenómeno multidimensional sustentado en las relaciones sociales.…

A new terrestrial species of Pseudoeurycea is described from the mountains of the Mixteca region of Oaxaca. Compared with other members of the genus, the new species is relatively slender and short-legged. The background color of the dorsum of this…

AIMS:
Health-promoting strategies need to be culturally appropriate to encourage healthy behaviours and lifestyle choices in children and young people. This rapid review explores the effects of participating in creative activities on the health and well-being of children aged between…

Les mécanismes cellulaires et moléculaires qui sous-tendent la mémoire et l’apprentissage chez les mammifères sont incomplètement compris. Le rythme thêta de l’hippocampe constitue l’état « en ligne » de cette structure qui est cruciale pour la mémoire déclarative. Dans la…