Uma viagem aos saberes das formadoras de professores da Educação Infantil

This study aims to contribute with the professional development of the Trainers of childhood education teachers of the City Department of Education of Natal/RN, through a formation in context, trying to understand the teaching knowledge required in the practice of these professionals. The focus of the research is in teaching knowledge understood as the ideas, beliefs, conceptions, reasons, arguments, speeches that the trainers builds during his life (ALTET, 2001; PIMENTA, 2002; TARDIF, 2001; 2002). The study inserts itself in the qualitative approach of the educational research and the chosen methodology has characteristics of an inquiryaction. In the process, the following instruments had been used: questionnaires, press conferences, personal documents. The relevance of the present research is in achieving reflections concerning the role of the trainers of teachers, who needs to be seen as a mediator in the formation of teachers, in view of the fact that he interferes and is determinative in such a way in the formative process as in its results. The findings demonstrate that: a) the identity of the trainer is in a development process, what it is resembled to the effective situation of that, symbolically, the trainer exists, however, his attributions still are not enough clear; b) the teaching knowledge of the formation in the childhood education are related, among others points, primordially, to the function / role of the childhood education, child and teacher s point of view of this stage of the basic education; c) the Trainers teaching knowledge, concerning the teaching performance, ratifies the multiplicity of knowledge that the trainer must has, beyond the necessary complementarities and conciliation between the administrative and pedagogical aspects in the exercise of the function; d) the Trainers have knowledge that are according to the speech, consisting as declarative knowledge; e) there is a conflict between the teaching knowledge of the Trainers and the actions that are part of real life, generating contradictions between the formative saying and making

Sistema inteligente para detecção de vazamentos em dutos de petróleo usando transformada Wavelet e redes neurais

This work consists in the use of techniques of signals processing and artificial neural networks to identify leaks in pipes with multiphase flow. In the traditional methods of leak detection exists a great difficulty to mount a profile, that is adjusted to the found in real conditions of the oil transport. These difficult conditions go since the unevenly soil that cause columns or vacuum throughout pipelines until the presence of multiphases like water, gas and oil; plus other components as sand, which use to produce discontinuous flow off and diverse variations. To attenuate these difficulties, the transform wavelet was used to map the signal pressure in different resolution plan allowing the extraction of descriptors that identify leaks patterns and with then to provide training for the neural network to learning of how to classify this pattern and report whenever this characterize leaks. During the tests were used transient and regime signals and pipelines with punctures with size variations from ½' to 1' of diameter to simulate leaks and between Upanema and Estreito B, of the UN-RNCE of the Petrobras, where it was possible to detect leaks. The results show that the proposed descriptors considered, based in statistical methods applied in domain transform, are sufficient to identify leaks patterns and make it possible to train the neural classifier to indicate the occurrence of pipeline leaks

Sistema especialista para detecção de falhas em comandos elétricos

This work consists of the creation of a Specialist System which utilizes production rules to detect inadequacies in the command circuits of an operation system and commands of electric engines known as Direct Start. Jointly, three other modules are developed: one for the simulation of the commands diagram, one for the simulation of faults and another one for the correction of defects in the diagram, with the objective of making it possible to train the professionals aiming a better qualification for the operation and maintenance. The development is carried through in such a way that the structure of the task allows the extending of the system and a succeeding promotion of other bigger and more complex typical systems. The computational environment LabView is employed to enable the system