Das palomas, sin historia experimental, fueron expuestas a una situación de autosnol¬deamiento donde una señal de 0.2 segundos precedió a la entrega de comida. Usando un intervalo entre reforzadores constante de 32 segundos, se varió sistemáticamente el inter¬valo señal-reforzador. Se…

THE CONSTRUCTION OF MAPS OF SOCIAL NETWORKS IS SHOWN BASED IN THE JOURNAL OF DOCUMENTATION DURING THE PERIOD 1988-2005. THE ANALYSIS IS MADE BY: (I) AUTHORS THAT PRODUCE THE MOST WITHIN THE PUBLICATION, (II) AUTHORS WITH THE GREATEST CENTRALITY AND…

Este estudio describe la abundancia estacional, fenología reproductiva y uso de hábitat de Mulato (Melanotis caerulescens), especie endémica de México y valorizada por su canto. Se realizó un muestreo con el método de captura con redes de niebla durante 2…

The k nearest neighbor (k-NN) classifier has been extensively used in Pattern Recognition because of its simplicity and its good performance. However, in large datasets applications, the exhaustive k-NN classifier becomes impractical. Therefore, many fast k-NN classifiers have been developed;…

Describes dic nature and development of interbehavioral psychology, with particular reference to its origin, postulation, data, operations, laws, asid implications., Describe la naturaleza y desarrollo de la psicologi’a interconductural, con peticular referencia a su origen, postulación, datos, operaciones, leyes e…

The present experiment attenmpted to evaluate the formation of associations between elements of an odour-flavour compoundpared with a LiCl injection, in rats. The data ob­tained show that the aversion produced to the lacquer thinner odour is greater when this is…

Power systems monitoring is particularly challenging due to the presence of dynamic load changes in normal operation mode of network nodes, as well as the presence of both continuous and discrete variables, noisy information and lack or excess of data.…

Peer reinforcement in the classroom offers advantages. Research in this area suggests that peer reinforcement can be powerful tool to control nonacademic classroom behaviors. No evidence was found concerning the importance of some variables, such as "popularity" and positive social…

Significant levels of the burnout syndrome were encountered in a study of 304 elementaryschool professionals, teaching students at the 8 to 12 year level, in Mexico City, Mexico.A questionnaire containing demographic, employment, and productivity data wasanalyzed and correlated in the…

The analogic pantograpIt is att apparatus wItic/t allows tIte con tinuous recording of any organism’s displacement witItin an experimental environment. Several interesting analyses can be rnade on tIte obtained record wIticIt allow to get more precise and comple¬te infor,nation about…