Miguel O. B. C. Melo

Analysis of mental workload of electrical power plant operators of control and operation centers.

Electrical systems can be categorized as critical systems where failure can result in significant financial loss, injury or threats to human life. The operators of the electric power control centers perform an activity in a specialized environment and have to carry it out by mobilizing knowledge and reasoning to which they have adequate training under the terms of the existing rules. To reach this there is a common mental request of personnel involved in these centers due the need to maintain attention, memory and reasoning request. In this sense, this study aims to evaluate the Mental Workload of technical workers of the Control Centers of Electrical Energy. It was undertaken a research on operators control centers of the electricity sector in Northeast Brazil. It was used for systematic observations, followed by interview and application of the instrument National Aeronautics and Space Administration Task Load Index known as NASA-TLX. As a result there will be subsidies for an assessment of mental workload of operators, and a contribution to improving the processes of managing the operation of electric utilities and the quality of workers.

Evaluation of the impacts of electric power quality costs in industrial production: Case studies in Northeast Brazil

Nowadays, power quality indicators of the supply of electric energy used are defined by means of traditional ratings of evaluation and do not include concepts that take into account the costs of the loss of electric power quality. An evaluation to evaluate the impact of electric power quality costs in industrial production is proposed.

Ergonomics Aspects in Operators of the Electric Power Control and Operation Centers

The activity of the operator of the electrical power control centers is the prevention of incidents and errors that disrupt the operation of the electrical system. They have to do it by mobilizing knowledge and reasoning for which they have received training, which from the point of view of the existing rules are adequate. However, there are some factors that need to be improved, because there are still accidents and incidents, caused manly caused by fatigue, lack of concentration or due to inadequacy of human Computer Interface. This article aims to analyses ergonomics aspects and human factors in the electric power control centers and contribute with a methodology of studies including the topics of Human; Machine; Interface IHM; and critical factors.

GESTÃO DE EMPRESAS NA ECONOMIA DE COMUNHÃO: ESTUDO DE CASO NO NORDESTE DO BRASIL

A Economia de Comunhao (EdC) consiste em direcionar a gestao das empresas a se constituirem como uma comunidade voltada a producao de bens e servicos tendo em vista uma sociedade mais solidaria na direcao de tornar o modelo de racionalidade e utilitarista economico mais equilibrado. Sao apresentadas consideracoes gerais sobre a gestao das empresas com o foco voltado para a Economia de Comunhao (EdC) analisando os seus fundamentos, caracteristicas e estruturas basicas. A fim de analisar este tipo de gestao foi realizada uma pesquisa com algumas empresas localizadas no Estado de Pernambuco.