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Dependência entre perdas em risco operacional
(Universidade Federal de São Carlos, 2014-02-12) Requena, Guaraci de Lima; Diniz, Carlos Alberto Ribeiro; https://lattes.cnpq.br/3277371897783194; https://lattes.cnpq.br/1507496001150908
In this work, we present and discuss the operational risk in the financial institutions, Basel Accord II, the structure of dependence between cumulative operational losses, a tool for modeling this dependence (theory of copula) and the allocation of a capital, called regulatory capital. The usual method for calculation of regulatory capital for operational risk, suggested by Basel Committee, overestimates the final capital because it is considered that the losses are perfectly positively dependents. Then, we propose a new method for this calculation based on theory of copula for the bivariate case. Such method models the dependence between two losses and considers a index (representing the expert opinion). We discuss also a method studied on Alexander (2003) and perform a simulation study in order to compare all methods, the usual, the proposed and the convolution one.
Professores iniciantes: como compreendem o seu trabalho?
(Universidade Federal de São Carlos, 2014-02-12) Lotumolo, Thais Elena; Silva, Flávio Caetano da; https://lattes.cnpq.br/7889803676083470; https://lattes.cnpq.br/0006416283096434
This research aims to understand which the perceptions and senses attributed by beginner teachers developing their professional career in school organizations are. The research was conducted in Hortolândia city, in São Paulo, and therefore, it was made interviews with teachers belonging to the municipal public schools network of the pictured locality. It is considered that the beginning stage of teaching is a specific moment in educators career, since it is a period that involves adversities, doubts and joy. Therefore, this concerning moment in beginner teachers career must be taken into consideration, offering support to the initial journey of teaching. Through data collection and their analyses, this work reports the necessities of the beginner teachers, as well as their educational experiences. The adopted methodology involves the interviews content analysis, that is, it was considered the speech and the narrative offered by the beginner teachers. In that sense, it is important to stand out the relation between the beginner teachers aspirations and the support offered in the educational environment. The presented study seeks to reveal the importance of focusing on the initial stage of teaching, on building new postures and on attitudes that meet the perceptions of the beginner teacher.
Significado em práticas matemáticas não escolares: estudo com alunos do ensino fundamental
(Universidade Federal de São Carlos, 2014-02-12) Costa, Daniela Netto Scatolin; Vilela, Denise Silva; https://lattes.cnpq.br/8155152145332951; https://lattes.cnpq.br/5520784282540648
This research has the purpose to analyze the influence of situations in order to deal with mathematics in different social practices. As a specific goal, it investigates the meanings in various school and non-school mathematical practices. Among these purposes there is an analysis about the switch of meanings between one and another practice. The development of this work is based on a review of studies about the exploitation of Mathematics on the day to day problems and in other areas of knowledge that could contribute to the learning of mathematics as a school subject. Considering the idea of mathematics as a social practice, the theoretical framework of the present research has centered on the design of means of structuring and situated learning by Jean Lave. The research follows a naturalistic perspective with ethnographicins piration and uses as a methodological resource the participant observation with a group of elementary school students. The data collected were recorded by the researcher in field activities, through interviews, diaries and field recordings. The activities observed occur inside and outside the school. For the analysis it is considered the resource association between the object and the theoretical framework consisting drawn from Lave s studies. Concerning the results obtained, it is possible to realize the strength of the situation and sometimes, how crucial it is in order to practice math. It stands out especially the prevalence of different meanings in different practices. The present study also promotes questions about the proposal to take the students everyday situations to inside the classroom and therefore, it intermediates my work as a mathematics teacher at elementary schools.