One of the important characteristics of effective teaching is to devote sufficient time to appropriate physical activity in physical education classes. The purpose of this study was to compare teaching effectiveness of prospective and in-service teachers in relation to student behaviors, course content activities and Academic Learning Time in Physical Education (ALT-PE) scores. Participants were 26 prospective and 28 in-service physical education teachers. Forty-minute regular lessons (n=54) of each teacher were video recorded in their natural settings and observed with the ALT-PE observational instrument. Learner involvement behaviors, context levels and ALT-PE scores were compared for two groups of teachers. MANOVA results have shown significant differences in student behaviors and course content activities between the groups. While prospective teachers spent significantly more time with management content, in-service teachers spent significantly more time with warm-up activities. Students in the classes of prospective teachers spent significantly more time with off-task and interim behaviors, but students in the classes of in-service teachers spent significantly more time with on task behaviors. The results, however, indicated no significant differences between the groups in motor appropriate behaviors of students. ANOVA results indicated that students spent 17.9% (for prospective teachers), and 18.7% (for in-service teachers) of total class time with ALT-PE behaviors. It seems fair to suggest that prospective and in-service PE teachers should decrease the time on management, transition, waiting, and theoretical explanations, while allocating more time on physical activity.

[pt] A inclusão da flexibilidade gerencial nas avaliações de projetos vem promovendo análises mais condizentes com a realidade, quando comparadas àquelas geradas pelos métodos tradicionais (VPL e TIR, por exemplo). Isso porque, de acordo com o comportamento do cenário, passa-se a considerar a possibilidade de realizações de mudanças nos planos anteriormente traçados. O estudo desse tema é especialmente importante em cenários que apresentam bastante incerteza associada, pesados investimentos e alto grau de irreversibilidade. A indústria petrolífera encaixa- se perfeitamente no perfil desse cenário, justificando portanto, a consideração da flexibilidade gerencial nas avaliações de seus projetos, feita através da analogia às opções financeiras. Nesse caso, devido a ordem de grandeza do investimento necessário para o desenvolvimento de um campo de petróleo, o estudo das vantagens que possam vir a ser proporcionadas por um investimento anterior em informação, visando reduzir as incertezas presentes, é um tópico que requer atenção especial, sendo então um dos objetivos dessa dissertação. Para tanto, utilizando um caso real da indústria petrolífera, foi considerada a disponibilidade de três diferentes alternativas para o desenvolvimento do campo, cada qual com sua escala. Daí, sempre assumindo cenários com incertezas técnicas e econômicas, foram feitas simulações para diferentes percentuais de revelações das incertezas (proporcionados pela informação anteriormente coletada), para diferentes custos de investimento em informação e para diferentes combinações de alternativas; simulação essa que ilustra o valor agregado pela flexibilidade criada com a adição de mais alternativas para o desenvolvimento do campo e que vem a ser outro objetivo dessa dissertação. / [en] The Real Options Theory approaches the reality in financial analysis better than the traditional methods (NPV and TIR, for example), as it turns possible to change the plans that had already been done, according to the situation (managerial flexibility). This subject is very important, specially for projects that involve huge amount of investment, a lot of uncertainty and low reversibility. Normally, the oil industry s projects have these kind of characteristics; justifying, this way, the application of this theory. In this case, because of the huge capital needed to be invested in order to develop the oilfield, it s worthwhile to analyze the advantages that can be provided by a forward investment in information in order to reduce the technical uncertainty. This is one of the objectives of this work. Therefore, one real case of the oil industry is being used in this work, considering three different available alternatives for the development of the oilfield, which one having its own scales of production, and always adopting situations with technical and economic uncertainties. It was done simulations for different percentage of uncertainties revelations (provided by the information obtained forwardly), for different costs of the investment in information and for different quantities of alternatives available to the manager. This last simulation shows the value added by the flexibility provided with the increasing of alternatives to develop the oilfield. This is the other objective of this work.