After a 0.5-, 15-, or 30-min intertrial interval, first entries of a novel Y-maze arm that had changed in brightness, percent entries of the arm, and percent time spent in this arm during a 1-min period were recorded in 4-month-old hooded rats following 6 or 30 min of free exploration of both arms. From the results, it was concluded that maximal responsiveness to the changed (or novel) arm occu...

Rodents submitted to restraint stress show decreased activity in an elevated plus-maze (EPM) 24 h later. The objective of the present study was to determine if a certain amount of time is needed after stress for the development of these changes. We also wanted to verify if behavioral tolerance of repeated daily restraint would be detectable in this model. Male Wistar rats were restrained for 2 ...

The well known conjugate gradient algorithm (cg-algorithm), introduced by Hestenes & Stiefel, [1952] intended for real, symmetric, positive definite matrices works as well for complex matrices and has the same typical convergence behavior. It will also work, not generally, but in many cases for hermitean, but not necessarily positive definite matrices. We shall show, that the same behavior is s...

Throughout this paper, K denotes a complete, non-trivially valued, ultrametric (or nonarchimedean) field. Sequences, infinite series and matrices have entries in K. In we record some interesting properties about the matrix classes (c0,c0) (c0,c0;P).

Abstract This study analyses the influence of environmental and individual conditions on quality speed entrepreneurial re-entries in emerging economies after a business failure. We propose conceptual framework supported by institutional economic theory to conditions; human social capital individuals’ skills, experiences, relationships. A retrospective multiple case analysis was designed test ou...

The online reputation management systems help to the consumers to make buying decisions looking for opinions in the web about many products offered by companies, also interested in the same opinions. This paper presents the system developed by the SINAI research group at the WEPS-3 task, called Online Reputation Management. Given a Twitter entry and a company name, the goal is to decide if the ...

The well known conjugate gradient algorithm (cg-algorithm), introduced by Hestenes & Stiefel, [1952] intended for real, symmetric, positive definite matrices works as well for complex matrices and has the same typical convergence behavior. It will also work, not generally, but in many cases for hermitean, but not necessarily positive definite matrices. We shall show, that the same behavior is s...

The well known conjugate gradient algorithm (cg-algorithm), introduced by Hestenes & Stiefel, [1952] intended for real, symmetric, positive definite matrices works as well for complex matrices and has the same typical convergence behavior. It will also work, not generally, but in many cases for hermitean, but not necessarily positive definite matrices. We shall show, that the same behavior is s...

An n× n array is avoidable if there exists a Latin square which differs from the array in every cell. The main aim of this paper is to present a generalization of a result of Chetwynd and Rhodes involving avoiding arrays with multiple entries in each cell. They proved a result regarding arrays with at most two entries in each cell, and we generalize their method to obtain a similar result for a...