5 documents found, page 1 of 1
MODELAGEM PROBABILÍSTICA DE PREÇOS MÁXIMOS DA COMMODITY BOI GORDO PARA O ESTADO...
Lucca Filho, Eduardo Lucca Filho; Liska, Gilberto Rodrigues; Santos, Jerônimo Alves; Matiussi, Ana CarolinaIn the economic scenario, studying the behavior of prices of products, commodities or indicators makes it possible to make forecasts, allowing the elaboration of risk projections with greater precision and, when extreme events of these prices occur, losses or even bankruptcies can occur. In this sense, the Extreme Value Theory (EVT) is more suitable such phenomena. Economic data from CEPEA - ESALQ covering the ...
Test time assessment on student's performance of statistics subjects by general...
Brum, Esttefani Duarte; Liska, Gilberto Rodrigues; Santos, Alisson DarósCan the time it takes a student to complete a test influence his / her performance? To answer this question, the logistic regression model was considered. In its development, evaluation was considered as a way of quantifying the performance of a student reflecting his degree of knowledge in a given content. For this we use records of the initial and final moments when developing an evaluation. The records of ti...
A simplex dispersion model for improving precision in the odds ratio confidence...
Liska, Gilberto Rodrigues; Citillo, Marcelo Ângelo; Menezes, Fortunato Silva de; Bueno Filho, Júlio Silvio de SousaA new approach to data analysis in mixture experiments is proposed using the simplex regression, that is in the class of dispersion models family. The advantages of this approach are illustrated in an experiment studying the mixture effect of fat, carbohydrate, and fiber on tumors’ proportion in mammary glands of rats. Model was evaluated by goodness of fit criteria, simulated envelope charts for residuals of a...
Evaluation of sensory panels of consumers of specialty coffee beverages using t...
Liska, Gilberto Rodrigues; Menezes, Fortunato Silva de; Cirillo, Marcelo Angelo; Borém, Flávio Meira; Cortez, Ricardo Miguel; Ribeiro, Diego EgídioAutomatic classification methods have been widely used in numerous situations and the boosting method has become known for use of a classification algorithm, which considers a set of training data and, from that set, constructs a classifier with reweighted versions of the training set. Given this characteristic, the aim of this study is to assess a sensory experiment related to acceptance tests with specialty c...
Selecting a binomial regression model on the predation rate of Euseius concordi...
Liska, Gilberto Rodrigues; Silveira, Erika Carla da; Reis, Paulo Rebelles; Cirillo, Marcelo Ângelo; Humada Gonzalez, Guido GustavoThe red spider Oligonychus ilicis (McGregor, 1917) (Tetranychidae) has proven to be a major cause of problems in coffee (Coffea spp.). Chemical control has been widely used to control this mite, however, the existence of the adverse effects of its application has generated concern regarding its use. An alternative to this method is the biological control of pests by natural predators, among them mites of the ge...