Revista Brasileira de Biometria最新文献_第9页

DENGUE: WHO IS DYING IN THE STATE OF PARÁ? 登革热:谁在parÁ州死亡?

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.320

Jose Lisboa, C. Souza, E. M. Ramos, Silvia dos Santos de Almeida

{"title":"DENGUE: WHO IS DYING IN THE STATE OF PARÁ?","authors":"Jose Lisboa, C. Souza, E. M. Ramos, Silvia dos Santos de Almeida","doi":"10.28951/RBB.V36I4.320","DOIUrl":"https://doi.org/10.28951/RBB.V36I4.320","url":null,"abstract":"In the last 50 years, the incidence of dengue grew over 30 times, with the development of the geographical expansion for new countries and currently, reaching small towns and rural areas. It is estimated about over than 50 million of infection by dengue occur annually and approximately 2.5 billion people die in countries where the disease is endemic. In the state of Pará, 4042 cases of dengue were confirmed until October 1st, 2015. At the same period in the year of 2014, 2704 occurrences were registered, which represents an increase of almost 50%. Thus, this work’s objective is to trace the patient’s with dengue profiles in the state of Pará and to verify the relationship between those patients stage of life and the type of dengue with evolution case. For this end, the descriptive analysis technique was utilized, aiming to trace the patient’s profiles confirmed with dengue. The correspondence analysis technique was utilized to verify what was (exclude) the relationship between the patients’s stage of life and the type of dengue fever with evolution case. As the main results, it was noticed that the majority of the patients are female, residing in urban zones and are adults. It was still perceived that elders, children and individuals that had dengue with complications, shock syndrome and hemorrhagic fever had the highest probabilities of dying. Therefore, it is due noticed that is important to give this disease greater attention, above all to the children and elderly stages of life, because, from the results it was evidenced that the individuals on these stages of life are the most prone to die from the disease. ","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90806539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE PERFORMANCE OF AFFIRMATIVE ACTION STUDENTS AND ANALYSIS OF SUBJECTS GRADES USING LATENT CLASS AND LATENT BUDGET MODELS 平权行动学生的表现及使用潜在阶级和潜在预算模型的学科成绩分析

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.309

E. Jelihovschi

引用次数: 0

THE BETA EXPONENTIATED WEIBULL GEOMETRIC DISTRIBUTION: MODELING, STRUCTURAL PROPERTIES, ESTIMATION AND AN APPLICATION TO A CERVICAL INTRAEPITHELIAL NEOPLASIA DATASET β指数威布尔几何分布:建模，结构特性，估计和应用于宫颈上皮内瘤变数据集

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.329

F. Louzada, I. Elbatal, D. Granzotto

引用次数: 1

GOMPERTZ REGRESSION MODEL WITH GAMMA FRAILTY: A STUDY ON THE APPLICATION IN LUNG CANCER 具有γ脆弱的Gompertz回归模型在肺癌中的应用研究

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.312

V. Tomazella, E. Milani, Teresa C. M. Dias

{"title":"GOMPERTZ REGRESSION MODEL WITH GAMMA FRAILTY: A STUDY ON THE APPLICATION IN LUNG CANCER","authors":"V. Tomazella, E. Milani, Teresa C. M. Dias","doi":"10.28951/RBB.V36I4.312","DOIUrl":"https://doi.org/10.28951/RBB.V36I4.312","url":null,"abstract":"Survival models with frailty are used when some variables are non-available to explain the occurrence time of an event of interest. This non-availability may be considered as a random effect related to unobserved covariates, or that cannot be measured, such as environmental or genetic factors. This paper focuses on the Gamma-Gompertz (denoted by G-G) model that is one of a class of models that investigate the effects of unobservable heterogeneity. We assume that the baseline mortality rate in the G-G model is the Gompertz model, in which mortality increases exponentially with age and the frailty is a fixed property of the individual, and the distribution of frailty is a gamma distribution. The proposed methodology uses the Laplace transform to find the unconditional survival function in the individual frailty. Estimation is based on maximum likelihood methods and this distribution is compared with its particular case. A simulation study examines the bias, the mean squared errors and the coverage probabilities considering various samples sizes and censored data. A real example with lung cancer data illustrates the applicability of the methodology, where we compared the G-G and without frailty models via criteria which select thebest fitted model to the data. ","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80385612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

THE THEORY OF THE INTERNALLY STUDENTIZED RANGE DISTRIBUTION REVISITED 重新审视了内部研究的范围分布理论

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.308

D. F. Ferreira, L. Chaves, Devanil Jaques de Souza

引用次数: 0

LONGITUDINAL DATA ANALYSIS OF STEVIA REBAUDIANA EVAPOTRANSPIRATION ACCORDING TO WATER LEVELS 甜叶菊随水位变化蒸散量的纵向数据分析

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.306

O. C. N. Pereira, P. V. C. Pereira, Altair Bertonha, I. Previdelli

引用次数: 2

ARTIFICIAL NEURAL NETWORKS FOR MODELING HYPSOMETRIC RELATIONSHIPS OF Pinus caribaea Morelet var. caribaea Barr. & Golf. 基于人工神经网络的东北松林拟合关系建模。和高尔夫球。

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.315

O. G. M. Guera, José Antônio Aleixo da Silva, R. Ferreira, H. B. Medel, D. Lazo

{"title":"ARTIFICIAL NEURAL NETWORKS FOR MODELING HYPSOMETRIC RELATIONSHIPS OF Pinus caribaea Morelet var. caribaea Barr. & Golf.","authors":"O. G. M. Guera, José Antônio Aleixo da Silva, R. Ferreira, H. B. Medel, D. Lazo","doi":"10.28951/RBB.V36I4.315","DOIUrl":"https://doi.org/10.28951/RBB.V36I4.315","url":null,"abstract":"The present study was carried out to compare the performances of regression models and Artificial Neural Networks (ANNs) in hypsometric relationships modeling and to analyze the influence of ANN type and sample size on ANN performance. The database was consisted by 65 circular plots of 500 m² in which Diameter at Breast Height - DBH (cm) and Total Height - Ht (m) of 2538 trees were measured in plantations of Pinus caribaea var. caribaea in Macurije forest company, Cuba. The study was carried out in three stages: i) Fit of traditional hypsometric models and sigmoidal growth models; ii) ANNs training and comparison of the selected ANN with the regression model selected; iii) Analysis of sample size and ANN type influences on the estimates precision by means of a completely random experimental design with 5x2 factorial arrangement, with the factors sample size (N) and ANN type (R). The results indicated that the best equation to estimate trees heights was that of Gompertz. The ANNs MLP 1-4-1 and MLP 8-4-1 were superior to the selected equation (Gompertz). Multi-Layer Perceptron ANNs generated more accurate estimates and their performances were less influenced by the sample size.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86852066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

THE USE OF CONTRASTS IN MULTIVARIATE NONLINEAR MIXED MODELS TO COMPARE TREATMENTS IN LONGITUDINAL FACTORIAL EXPERIMENTS 在多变量非线性混合模型中使用对比来比较纵向因子实验中的处理

Revista Brasileira de Biometria Pub Date : 2018-12-27 DOI: 10.28951/RBB.V36I4.314

L. Carvalho, M. Mischan, J. R. S. Passos, S. Z. D. Pinho

引用次数: 0

Aplicação da metodologia Peaks Over Threshold ao Salto em Comprimento do Atletismo “峰值超过阈值”方法在田径跳远中的应用

Revista Brasileira de Biometria Pub Date : 2018-12-01 DOI: 10.28951/RBB.V36I4

D. Silva, F. Caeiro, M. M. Oliveira

引用次数: 0

BAYESIAN AND FREQUENTIST APPROACHES FOR FITTING THE GAMMA-TIME-DEPENDENT MODEL TO DESCRIBE NEUTRAL DETERGENT FIBER DEGRADATION 贝叶斯和频率方法拟合伽马时间依赖模型来描述中性洗涤剂纤维降解

Revista Brasileira de Biometria Pub Date : 2018-09-26 DOI: 10.28951/RBB.V36I3.260

H. Bonfá, E. Detmann, F. F. Silva, J. Figueiras

{"title":"BAYESIAN AND FREQUENTIST APPROACHES FOR FITTING THE GAMMA-TIME-DEPENDENT MODEL TO DESCRIBE NEUTRAL DETERGENT FIBER DEGRADATION","authors":"H. Bonfá, E. Detmann, F. F. Silva, J. Figueiras","doi":"10.28951/RBB.V36I3.260","DOIUrl":"https://doi.org/10.28951/RBB.V36I3.260","url":null,"abstract":"The aim of the study was evaluate and compare the efficiency of Bayesian and frequentist approach to describe the rumen degradation of NDF. Simulated data was composed by four scenarios: regular restriction in the number of incubation times, random loss of incubation times, loss of specific parts of degradation curves, variation in the precision of the incubations procedures. Two real datasets was used, these real data encompassed the evaluation of NDF degradation of a tropical grass (Brachiaria decumbes). The model was fitted according their characteristics approach and compared by plots and assessors. The Bayesian and frequentist approach presented reliable estimates of degradation parameters for the majority of the data tested. Therefore, in specific cases with short random records number, the Bayesian approach showed greater bias of the estimates of incubation residue and estimates of degradation rate without a biological coherence of the parameters, compared to frequentist inference. In another words, the Bayesian approach fitted with prior diffuse, presented less flexible. Nevertheless, it is emphasized the importance of the background information before the modeling, mainly for the Bayesian approach, in order to define proper prior distributions. Future thorough studies about the influence of non-informative prior for the parameters are necessary.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85759921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0