Revista Brasileira de Biometria最新文献_第4页

SPECIAL ISSUE ON BIOSTATISTICS AND BIOMETRY IN THE ERA OF DATA SCIENCE 数据科学时代的生物统计学和生物计量学特刊

Revista Brasileira de Biometria Pub Date : 2021-03-30 DOI: 10.28951/RBB.V39I1.556

P. Rodrigues, L. R. Nakamura, C. Pereira

引用次数: 1

STATISTICAL PROCESS CONTROL (SPC) OF DAMAGE METRICS IN THE IMPEDANCE-BASED STRUCTURAL HEALTH MONITORING 基于阻抗的结构健康监测中损伤度量的统计过程控制

Revista Brasileira de Biometria Pub Date : 2021-03-30 DOI: 10.28951/RBB.V39I1.482

Q. Nomelini, J. W. Silva, C. A. Gallo, R. M. F. Neto, José Dos Reis Vieira de Moura Junior, J. E. Ramos

{"title":"STATISTICAL PROCESS CONTROL (SPC) OF DAMAGE METRICS IN THE IMPEDANCE-BASED STRUCTURAL HEALTH MONITORING","authors":"Q. Nomelini, J. W. Silva, C. A. Gallo, R. M. F. Neto, José Dos Reis Vieira de Moura Junior, J. E. Ramos","doi":"10.28951/RBB.V39I1.482","DOIUrl":"https://doi.org/10.28951/RBB.V39I1.482","url":null,"abstract":" ABSTRACT: Statistical Process Control (SPC) stands out for the use of control charts and for repeatability and reproducibility (R&R) techniques. This work aimed at its applications in the aspects of pre-processing of structural monitoring. The experiment was carried out in a completely randomized design (CRD) with two sources of variation: eight aluminum beams with piezoelectric patches and five types of damage (D1 = baseline, D2 = 0.6g, D3 = 1.1g, D4 = 1.6g, D5 = 2.2g). All measurements were gathered at 30C and with 20 repetitions for each condition case, producing a damage metric. In the R&R study, a low variation of repetition was observed (9.84%), but a high reproducibility (72.39%), representing that the damage metrics were similar for each situation, but a high variation among beams and damages. Based on this evaluation, the control charts helped to verify in which beams and damages these greatest variabilities were found. Concluding, the control charts for mean and individual measures as well as the R&R study were interesting tools for raw data preprocessing step for measurement error detection. ","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82168184","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

APPLICATION OF THE KOLMOGOROV-SMIRNOV TEST TO COMPARE GREENHOUSE GAS EMISSIONS OVER TIME 应用柯尔莫哥洛夫-斯米尔诺夫检验比较温室气体排放量随时间的变化

Revista Brasileira de Biometria Pub Date : 2021-03-30 DOI: 10.28951/RBB.V39I1.498

A. J. B. Luiz, Magda Aparecida de Lima

{"title":"APPLICATION OF THE KOLMOGOROV-SMIRNOV TEST TO COMPARE GREENHOUSE GAS EMISSIONS OVER TIME","authors":"A. J. B. Luiz, Magda Aparecida de Lima","doi":"10.28951/RBB.V39I1.498","DOIUrl":"https://doi.org/10.28951/RBB.V39I1.498","url":null,"abstract":"The national inventories of greenhouse gas (GHG) emissions, which are periodically prepared by countries that signed the Climate Change Convention, compute emissions from anthropogenic sources among them agricultural activities. The protocols established within the scope of the International Panel on Climate Change (IPCC) make it possible to estimate these emissions. These protocols use standard emission factors that vary according to the characteristics of the monitored activities and only scientific research, published in journals of recognized quality, can establish other local factors. Brazilian researchers carry out experiments to measure GHG emissions from agricultural activities, aiming to calculate specific parameters for the national climatic and management conditions. These field experiments are complex, costly, with a limited number of repetitions and, eventually, high natural variability. Often, these limitations result in the inability of the analysis of variance (ANOVA) to identify differences between treatments. The objective of this work is to present the non-parametric Kolmogorov-Smirnov (KS) test as an alternative to compare the effect of flooded irrigation management on methane (CH4) emission throughout the rice crop cycle. We present a case study in which ANOVA produced non-significant results for the adjustment of the model while the KS identified the emission curves as significantly different. The KS test could be adapted, via the SAS NPAR1WAY routine, to compare events with responses over time, such as methane emissions in flooded rice, resulting in test values and graphs that are easy to understand and interpret.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73853603","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: 7

SELECTION OF SNP MARKERS: ANALYZING GAW17 DATA USING DIFFERENT METHODOLOGIES SNP标记的选择:使用不同的方法分析gaw17数据

Revista Brasileira de Biometria Pub Date : 2021-03-30 DOI: 10.28951/RBB.V39I1.499

Mariana Pavan Ióca, D. Zuanetti

引用次数: 1

CLASSIFICATION AND IDENTIFICATION OF THE CAUSES OF ABSENTEEISM IN A PUBLIC TRANSPORT COMPANY USING CLUSTER ANALYSIS AND PRINCIPAL COMPONENTS TECHNIQUES 使用聚类分析和主成分技术对公共交通公司旷工的原因进行分类和识别

Revista Brasileira de Biometria Pub Date : 2021-03-30 DOI: 10.28951/RBB.V39I1.493

Laryssa Ribeiro Calcagnoto, Tiago V. F. Santana, R. R. Pescim

{"title":"CLASSIFICATION AND IDENTIFICATION OF THE CAUSES OF ABSENTEEISM IN A PUBLIC TRANSPORT COMPANY USING CLUSTER ANALYSIS AND PRINCIPAL COMPONENTS TECHNIQUES","authors":"Laryssa Ribeiro Calcagnoto, Tiago V. F. Santana, R. R. Pescim","doi":"10.28951/RBB.V39I1.493","DOIUrl":"https://doi.org/10.28951/RBB.V39I1.493","url":null,"abstract":"Absenteeism is the practice or custom of an employee to be absent from workplace. Its causes are diverse and may affect the workers income as well as to cause operational disruption, stress the administration and also financial losses for the company. Cluster analysis is a multivariate tool that can be used to determine groups in the sense that each group has its own characteristics in terms of the observed variables. In this sense, that technique can be used as a support to show which characteristics may contribute to absenteeism. We use the Ward hierarchical algorithm to build the clusters and to compare the groups the Kruskal-Wallis nonparametric test is adopted. Finally, a study on the strength of association among the variables is developed using Spearman’s correlation and for the relationship among those variables related to absence and social aspects, we use the principal component analysis. Moreover, the study indicates the possibility to determine three heterogeneous groups in the company and to show characteristics in those groups which are potential factors that cause absenteeism to a greater or lower extent.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76744566","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

Modelagem Bayesiano de regressão binária para dados desbalanceados usando novas ligações 使用新链接对不平衡数据进行贝叶斯二元回归建模

Revista Brasileira de Biometria Pub Date : 2020-12-29 DOI: 10.28951/rbb.v38i4.455

Andson Nunes da Silva, S. Anyosa, Jorgelina Guzmán

引用次数: 2

SURVIVAL TREE SCORE: A NOVEL APPROACH TO PREDICT MORTALITY IN CIRRHOTIC PATIENTS 生存树评分:预测肝硬化患者死亡率的新方法

Revista Brasileira de Biometria Pub Date : 2020-12-29 DOI: 10.28951/rbb.v38i4.464

S. Basto, E. M. Nascimento, B. B. Pereira, J. Ribeiro Filho, R. Perez, Cristiane Alves Vilella Nogueira

{"title":"SURVIVAL TREE SCORE: A NOVEL APPROACH TO PREDICT MORTALITY IN CIRRHOTIC PATIENTS","authors":"S. Basto, E. M. Nascimento, B. B. Pereira, J. Ribeiro Filho, R. Perez, Cristiane Alves Vilella Nogueira","doi":"10.28951/rbb.v38i4.464","DOIUrl":"https://doi.org/10.28951/rbb.v38i4.464","url":null,"abstract":"Although Model for End-Stage Liver Disease (MELD) score is adopted worldwide for liver transplant allocation, but it has prognostic limitations. The aim of this study was to apply the survival tree analysis to evaluate interaction between variables related to mortality in cirrhotics patients enlisted for liver transplantation, and to develop a new mortality predictive score. Demographic, clinical and laboratory data of cirrhotic patients waiting for liver transplantation during a 12-year period were considered. Charts from 765 patients were reviewed. The interaction between prognostic covariates was obtained using a survival tree analysis. In order to develop the predictive score, Cox regression analysis was performed applying significant data obtained by the survival tree analysis. The prognostic covariates evaluated in the survival tree were MELD score, Child-Pugh score, serum sodium, viral disease etiology, hepatocellular carcinoma diagnosis and generated a coefficient for each. Based on the survival tree analysis, MELD = 15 was the primary root variable (p<0.001). The survival tree provided eight prognostic groups. The higher mortality hazard ratio (HR) risk was observed in the MELD >28 group (HR= 16.7). The new score (Survival Tree Score – STS) was obtained according to the coefficients provided. The STS prognostic performance was superior to MELD score (AUROC 0.713 vs 0.653, p<0.001). STS, could be a useful tool to accurately identify individual mortality risk in advanced liver disease.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86505272","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

ANÁLISE DE COMPONENTES PRINCIPAIS PARA O COMPORTAMENTO MORFOLÓGICO E AGRONÔMICO DE GENÓTIPOS DE ALGODOEIRO NO MUNICÍPIO DE UBERABA – MG 乌贝巴市棉花基因型形态和农艺行为的主成分分析

Revista Brasileira de Biometria Pub Date : 2020-12-29 DOI: 10.28951/rbb.v38i4.458

Josiane Rodrigues, Francisco Humberto Henrique, S. S. Piedade, J. P. Laca-Buendía

{"title":"ANÁLISE DE COMPONENTES PRINCIPAIS PARA O COMPORTAMENTO MORFOLÓGICO E AGRONÔMICO DE GENÓTIPOS DE ALGODOEIRO NO MUNICÍPIO DE UBERABA – MG","authors":"Josiane Rodrigues, Francisco Humberto Henrique, S. S. Piedade, J. P. Laca-Buendía","doi":"10.28951/rbb.v38i4.458","DOIUrl":"https://doi.org/10.28951/rbb.v38i4.458","url":null,"abstract":"Com o objetivo de caracterizar cinco cultivares e um novo genótipo de algodoeiro (Gossypium hirsutum L. r. latifolium Hutch) com respeito a variáveis morfológicas e agronômicas no município de Uberaba (MG), a técnica multivariada da análise de componentes principais foi aplicada. Para a realização do experimento utilizou-se o delineamento casualizado em blocos com seis tratamentos e quatro repetições, em que foram avaliadas as variedades Delta Opal (Delta and Pine), Delta Penta (Delta and Pine), BRS Cedro (EMBRAPA), IAC-25 (IAC), EPAMIG Precoce I e a progênie IAC-06/191 (IAC). As variáveis avaliadas foram: altura do primeiro ramo produtivo, altura da planta, diâmetro do caule na colheita, estande final, peso total de sementes, peso de 100 sementes, peso de um capulho, porcentagem de fibra, índice de fibra e produtividade. A análise de componentes principais possibilitou a visualização conjunta das variáveis avaliadas, sendo aquelas relacionadas à colheita mecânica e à produtividade as maiores responsáveis pela dispersão total dos dados. A linhagem BRS-Cedro demonstrou alta produtividade e aspectos positivos para a colheita mecânica, o que a coloca em destaque em relação a cada uma das outras linhagens. Já a progênie IAC-06/191 mostrou que favorecerá o bom desempenho das colhedoras, embora não tenha apresentado alta produtividade.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89722758","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

COMPARISON BETWEEN AMMI, W-AMMI AND GGE METHODOLOGY IN THE CONTEXT OF SIMULATED DATA 在模拟数据背景下ammi、w-ammi和gge方法的比较

Revista Brasileira de Biometria Pub Date : 2020-09-29 DOI: 10.28951/RBB.V38I3.433

Danilo A. Sarti, C. Dias

引用次数: 1

Innovation in the prediction of the energy values of poultry feedstuffs 家禽饲料能量值预测的创新

Revista Brasileira de Biometria Pub Date : 2020-09-29 DOI: 10.28951/RBB.V38I3.429

T. C. Alvarenga, R. R. Lima, Júlio Sílvio de Sousa Bueno Filho, P. B. Rodrigues, R. R. Alvarenga, F. C. Q. Mariano

{"title":"Innovation in the prediction of the energy values of poultry feedstuffs","authors":"T. C. Alvarenga, R. R. Lima, Júlio Sílvio de Sousa Bueno Filho, P. B. Rodrigues, R. R. Alvarenga, F. C. Q. Mariano","doi":"10.28951/RBB.V38I3.429","DOIUrl":"https://doi.org/10.28951/RBB.V38I3.429","url":null,"abstract":"The Thomson Reuters Web of Science is a database that enables to identify patterns and trends in scientific publications, thereby enabling a broad understanding of the publications in the area of interest. An area that has been arising attention to the statistical community is the Bayesian networks, mainly due to the flexibility of modeling the data, both discrete and continuous, in terms of regression and high accuracy in the obtained results, that is, they are probabilistically promising models. The objective of this study was to identify and describe the main categories of the Web of Science that contemplate studies on Bayesian networks, check the publications over the years, identify the types of documents published, as well as the main funding agencies, the main authors, countries and languages. For the accomplishment of this study, the data of the Thomson Reuters Web of Science database were collected from 1945 to 2018. By means of search it is possible to answer several questions of interest, among them, if there are publications of Bayesian networks mainly in the animal sciences, more specifically in the formulation of diets for broilers. The results confirm that this area of knowledge is still very recent. The first publications took place in 1990 and the main publications are concentrated in computer science and no study was found in the prediction of the metabolizable energy of broilers using this methodology.","PeriodicalId":36293,"journal":{"name":"Revista Brasileira de Biometria","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82144682","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