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Teoria de Markowitz e programação linear para formação de uma carteira ótima de investimentos
(Universidade Federal de São Carlos, 2018-11-14) Dias, Denis Pereira; Carvalho, Silvia Maria Simões de; https://lattes.cnpq.br/8244087426759161; https://lattes.cnpq.br/8781695341922322
The study presented in this dissertation aims to select an optimal portfolio of investments. To do so, we use the literature that deals with linear programming, coupled with Markowitz Modern Portfolio Theory to model and solve two linear programming problems that resulted in the composition of two portfolios, considering conservative and less conservative investor proﬁles. For the modeling of the problems, a technical analysis was performed on the assets that were previously selected for the composition of the portfolio. The selection of the assets took into account some statistical parameters, such as weighted arithmetic mean and correlation coeﬃcient. Considering that the experts’ forecasts indicated that the year 2018 would be favorable to investments in the Stock Exchange, the results obtained in this work agreed with this statement. However, as it is a technical analysis, it is concluded that the results presented do not guarantee a practical eﬃciency of the same, however, they serve to guide the investment activities.
Experimentos demonstrativos para o estudo do eletromagnetismo
(Universidade Federal de São Carlos, 2018-11-14) Monteiro, Hudson Roberto; Silva, Adriana de Oliveira Delgado; https://lattes.cnpq.br/2707979913713089; https://lattes.cnpq.br/5231542208528700
Science is fundamental for our existence. Physics is among the subjects upon which science is based. Besides being of extreme importance in the understanding of concepts related to the existence of human beings and on laws that govern the universe, it can also contribute to a civic awareness education through a teaching method oriented to students' daily situations. Unfortunately, there is a shortage of experimental practice on physical and natural sciences in Brazil, with excessive dependence on course material, expository method, number of classes reduced and teachers’ insufficient qualification. Given these circumstances, this thesis was idealized as a proposal to facilitate students learning concerning electromagnetism and Maxwell's laws. Therefore, a manual for the construction of electromagnetism experiments was devised and applied, in 2017, to a group of senior high school students at a public school located in the State of São Paulo. That aimed to develop students’ motivation regarding science studying tied to investigative experimentation. The activities were conducted for about eighteen weeks and involved preparation, elaboration, presentation in class with discussion, and final presentation to the community of the projects selected by students with the teacher's orientation. Concurrently, the teacher presented concepts related to the experiments investigated by the students. The utilization of the class content done with the proposed method comparing to the traditional method was analyzed from the number of correct answer rates in tests. The results of the 2016 class – control group – were compared to the 2017 class – experimental group. The 2016 class had a 41,2 % of correct answers rate whereas the 2017 class had a 50,9% which suggests the practice allowed for better students’ performance.