Sigmae

Language

Sigmae

e-ISSN: 2317-0840

  • You are here:
  • Homepage
  • Vol. 13 No. 4 (2024)

Special issue: 68th RBRAS

Vol. 13 No. 4 (2024)

This issue brings original research papers presented in the 68th RBRAS held in Piracicaba, São Paulo, Brazil, from 29th to 31st may 2024.

Sections

Applied Mathematics

Classification Tree for Estimating Student Profiles Who Participated in the SAEB Portuguese Language Exam in 2019

Pedro dos Santos Costa Junior, Carla Dominique Silva Vasconcelos, Ana Vitória Cordeiro da Silva, Neylan Leal Dias, Simone de Almeida Delphim Leal, Edcarlos Vasconcelos da Silva.


Published in 04 novembro 2024

Applied Statistics

Fitting nonlinear models to data from the biquinho pepper plant

Rick Anderson Mangueira, Gabriela Xavier Oioli, Viviane Farias Silva, Elias Silva de Medeiros, Valdemiro Piedade Vigas.


Published in 04 novembro 2024

Statistical modeling of the influence of particulate matter (MP10) on the health of the population of Santa Gertrudes - SP

Pollyane Vieira da Silva, Eduarda da Silva, Magda Adelaide Lombardo.


Published in 04 novembro 2024

Bayesian modeling used to describe the drying kinetics of rice grains

Natiele de Almeida Gonzaga, Edilene Cristina Pedroso Azarias, Rafaela de Carvalho Salvador, Joel Augusto Muniz, Edilson Marcelino Silva, Alessandra Querino da Silva.


Published in 04 novembro 2024

Nonlinear regression models as a tool to describe strawberry vegetative growth

Josiele Garcia Dutra, Pollyane Vieira da Silva, Roberta Marins Nogueira Peil.


Published in 20 novembro 2024

Probabilistic Approach in the Analysis of Extreme Vegetable Prices: An Application to Maximum Potato Prices in the State of São Paulo

Mariana Gabriela Pantoja, Marta Cristina Marjotta-Maistro, Gilberto Rodrigues Liska.


Published in 30 janeiro 2025

The Transformation of Family Farming Establishments in São Paulo

Edilson Niehues Rodrigues Lima, Milena de Carvalho Nascimento, Jéssica Helena Christofoletti, Vinícius José de Oliveira Garcia, Marta Cristina Marjotta-Maistro, Gilberto Rodrigues Liska.


Published in 13 janeiro 2025

An analysis of correlation prices of hydrated ethanol fuel in Brazil's main producing states

Júlia Franco de Aguiar Minussi, Marta Cristina Marjotta-Maistro, Gilberto Rodrigues Liska.


Published in 24 janeiro 2025

Academic stress determinant factors: an investigation according to Multinomial Logistic Regression

João Debastiani Neto, Clicia Geovane Alves Pereira, Maria Graziela da Silva Fernandes, Ricardo Puziol de Oliveira.


Published in 04 novembro 2024

Decision Tree Applied to the Study of SAEB Performance in Mathematics of Students from Amapá

Carla Dominique Silva Vasconcelos, Pedro dos Santos Costa Junior, Edcarlos Vasconcelos da Silva.


Published in 04 novembro 2024

Gompertz nonlinear model with asymmetric error to describe the dry matter accumulation of the bean cultivar bolinha

Kelly Pereira de Lima, Felipe Augusto Fernandes, Ricardo Andrade Lira Rabelo, Augusto Ramalho de Morais.


Published in 04 novembro 2024

Agronomic characterization of biquinho vermelha and bode amarela peppers by principal component analysis

Beatriz Bandini de Carvalho, Beatriz Romanini Morales, Christiane de Fátima Martins França, Fernando César Sala, Gilberto Rodrigues Liska, Josiane Rodrigues.


Published in 04 novembro 2024

Linear relations among traits alfalfa cultivars

Lais Cherobini, Alberto Cargnelutti Filho, Murilo Vieira Loro, Vithória Morena Ortiz, João Augusto Andretta, João Carlos Denardin Junior, Marcelo Konrad, Mikael Brum dos Reis, Rodrigo Pereira Soares.


Published in 04 novembro 2024

Modeling the conditional volatility of arabica coffee prices

Lucas Pereira Belo, Eduardo Campana Barbosa, Paulo César Emiliano, Luciano Gonçalves Batista.


Published in 04 novembro 2024

Comparison of two classifiers in the identification of tree species based in continuous characters

Giovani Festa Paludo, Júlio Sílvio de Sousa Bueno Filho.


Published in 04 novembro 2024

Use of nonlinear models to evaluate the amount of dry and fresh mass of the aerial part of chicory plants

Gabriel Edson Sousa da Silva, Natiele de Almeida Gonzaga, Joel Augusto Muniz, Edilson Marcelino Silva, Tales Jesus Fernandes.


Published in 04 novembro 2024

Regression models for the value of rice production in Rio Grande do Sul

Iverson Rodrigues Custódio, Ana Lúcia Mateus, Luciane Flores Jacobi.


Published in 04 novembro 2024

Data Reduction in Item Response Theory Models

Renan Barufaldi Bueno, Marcelo Andrade da Silva.


Published in 17 dezembro 2024

Study on the profile of UFMT incoming students after 10 years of the quotas law

Ilias De Musis, Anderson Castro Soares de Oliveira, Eveliny Barroso da Silva.


Published in 04 novembro 2024

Kohonen self-organizing map for ideotype identification chickpea agronomic

Vithória Morena Ortiz, Alberto Cargnelutti Filho, Murilo Vieira Loro, João Augusto Andretta, Mikael Brum dos Reis, Bruno Raul Schuller.


Published in 04 novembro 2024

Computer Science

Developing a Robust Shiny Application Integrated with SQL Databases for Aquaculture

Daniel Pinto Siqueira, Gabriel Rodrigues da Silva, Luan Patrick Moura de Souza, Carlos Antônio Zarzar, Paulo Roberto Brasil Santos.


Published in 04 novembro 2024

Data Science & Machine Learning

Adaptations of Extreme Gradient Boosting for Imbalanced Datasets with Application in Credit Scoring

Gabriel Almeida Ferreira, Adriano Kamimura Suzuki.


Published in 04 novembro 2024

MACHINE LEARNING: PREDICTING CREDIT RISK

Rafael Almeida Pereira Melo, Paulo Henrique Sales Guimarães, Marcel Irving Pereira Melo.


Published in 04 novembro 2024

Classification of Accident Causes on Highways in Minas Gerais Using Machine Learning

Lucas Ferreira Rosa, Miguel Carvalho Nascimento, Welson Antônio de Oliveira, Momate Emate Ossifo, Paulo Henrique Sales Guimarães.


Published in 04 novembro 2024

Boosting algorithms for prediction in agriculture: An application of Feature importance and Feature Selection

Viviane Costa Silva, Mateus Silva Rocha, Glaucia Amorim Faria, Silvio Fernando Alves Xavier Junior, Tiago Almeida de Oliveira, Ana Patricia Bastos Peixoto.


Published in 07 janeiro 2025

Clustering Methods for Textual Data Analysis of Strategic Planning Indicators of the State of Mato Grosso

Lia Hanna Martins Morita, Wellington de Lara Martins, Anderson Castro Soares de Oliveira.


Published in 04 novembro 2024

Full papers

Factors associated with depression in pregnant women during the COVID-19 pandemic

Vanessa Maculan Silvério, Elias Sabe, Viviane Costa Silva, Luiz Ricardo Nakamura, Thiago Gentil Ramires, Roger Almeida Pereira Melo.


Published in 04 novembro 2024

GAMLSS Models: Application in cases of Severe Acute Respiratory Syndrome with emphasis on Influenza and other causes

Miriam Lecilia Farias Ribeiro, Letícia Souza de Oliveira, Josimar Mendes de Vasconcelos.


Published in 04 novembro 2024

Probability and Statistics

Analysis of the growth curve of Tommy Atkins mango fruits by non-linear models

Edilene Azarias, Natiele de Almeida Gonzaga, Rafaela de Carvalho Salvador, Edilson Marcelino Silva, Joel Augusto Muniz.


Published in 04 novembro 2024

Statistics Education

Analysis of statistical didactic workshops in R and RStudio held at the Federal University of Pelotas

Ana Rita de Assumpção Mazzini, Giselda Maria Pereira, Pollyane Vieira da Silva, Isadora Moreira da Luz Real, Silvia Naiane Jappe, Luiza Elhert Bierhals.


Published in 04 novembro 2024

Use of RStudio as a programming environment: a perspective from students of Agronomic Engineering and Biotechnology

Gabriela Araujo Catto, Beatriz Bandini de Carvalho, Gilberto Rodrigues Liska, Josiane Rodrigues.


Published in 17 dezembro 2024