Results 31 to 40 of about 2,665,481 (259)

Analysis of Fluid Velocity inside an Agricultural Sprayer Using Generalized Linear Mixed Models

open access: yesApplied Sciences, 2020
The fluid velocity inside the tank of agricultural sprayers is an indicator of the quality of the mixture. This study aims to formulate the best generalized linear mixed model to infer the fluid velocity inside a tank under specific operational ...
Ángel Javier Aguirre   +6 more
doaj   +1 more source

Summertime response of ozone and fine particulate matter to mixing layer meteorology over the North China Plain [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Measurements of surface ozone (O3), PM2.5 and its major secondary components (SO42-, NO3-, NH4+, and organic carbon (OC)), mixing layer height (MLH), and other meteorological parameters were made in the North China Plain (NCP) during the warm season ...
J. Wang   +7 more
doaj   +1 more source

A Novel Approach for Gaussian Mixture Model Clustering Based on Soft Computing Method

open access: yesIEEE Access, 2021
Determining the number of clusters in a data set is a significant and difficult problem in cluster analysis. In this study, a new model-based clustering approach is proposed for the estimation of the number of clusters. In the proposed method, the number
Maruf Gogebakan
doaj   +1 more source

Information-Corrected Estimation: A Generalization Error Reducing Parameter Estimation Method

open access: yesEntropy, 2021
Modern computational models in supervised machine learning are often highly parameterized universal approximators. As such, the value of the parameters is unimportant, and only the out of sample performance is considered.
Matthew Dixon, Tyler Ward
doaj   +1 more source

Dynamic Changes, Spatiotemporal Differences, and Ecological Effects of Impervious Surfaces in the Yellow River Basin, 1986–2020

open access: yesRemote Sensing, 2023
Impervious surfaces (IS) are one of the most important components of the earth’s surface, and understanding how IS have expanded is vital. However, few studies on IS or urbanization have focused on the cradle of the Chinese nation—the Yellow River Basin (
Jing Zhang   +7 more
doaj   +1 more source

Comparing Model Selection Criteria to Distinguish Truncated Operational Risk Models

open access: yesFrontiers in Applied Mathematics and Statistics, 2020
In this paper three information criteria are employed to assess the truncated operational risk models. The performances of the three information criteria on distinguishing the models are compared.
Daoping Yu
doaj   +1 more source

Using Genetic Algorithm in Outlier Detection for Regression Model [PDF]

open access: yesمجلة التربية والعلم, 2018
Linear regression model is commonly used to analyze data from many fields. Sometimes the data under research contains outliers, and it is important that these outliers be identified in the course of the correct statistical analysis.
Zakariya Y. Algamal, Hamsa M.Thabet
doaj   +1 more source

First evidence of occupational and residential exposure to bisphenols associated with an e-waste dismantling site: A case study in China

open access: yesEcotoxicology and Environmental Safety, 2023
Bisphenol A and its structural analogues (BPs) are widely used chemicals in electronics devices. To get insight into the occupational exposure to the full-time employees compared with the residents, urinary BPs in workers dismantling e-waste and in ...
Xiaoying Li   +4 more
doaj   +1 more source

Model Selection in Beta Regression Analysis Using Several Information Criteria and Heuristic Optimization

open access: yesJournal of New Theory, 2020
In the context of generalized linear modelling (GLM), the beta regression analysis is used to estimate regression models when the dependent variable lies between (0,1).
Mehmet Ali Cengiz, Emre Dünder
doaj  

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele   +19 more
wiley   +1 more source

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