Results 11 to 20 of about 185,199 (284)

A Nonlinear Land Use Regression Approach for Modelling NO₂ Concentrations in Urban Areas—Using Data from Low-Cost Sensors and Diffusion Tubes

Atmosphere, 2020
Land Use Regression (LUR) based on multiple linear regression model is one of the techniques used most frequently for modelling the spatial variability of air pollution and assessing exposure in urban areas.
Said Munir, Martin Mayfield, Daniel Coca, Lyudmila S Mihaylova   +3 more
doaj   +1 more source

The Usefulness of Variables (Dimension) Reduction Methods in Stock Returns of the Companies Listed on Tehran Stock Exchange [PDF]

مطالعات تجربی حسابداری مالی, 2019
The Purpose of this research is investigating the usefulness of variables (dimension) reduction methods (selection and extraction) in stock returns of the companies listed on Tehran Stock Exchange (TSE).
Mohammad Hossein Setayesh, Mostafa Kazemnezhad   +1 more
doaj   +1 more source

Nonlinear Tactile Estimation Model Based on Perceptibility of Mechanoreceptors Improves Quantitative Tactile Sensing

Sensors, 2022
Tactile sensing has attracted significant attention as a tactile quantitative evaluation method because the tactile sensation is an important factor while evaluating consumer products.
Momoko Sagara, Lisako Nobuyama, Kenjiro Takemura   +2 more
doaj   +1 more source

Critical points in logistic growth curves and treatment comparisons

Scientia Agricola, 2012
Several biological phenomena have a behavior over time mathematically characterized by a strong increasing function in the early stages of development, then by a less pronounced growth, sometimes showing stability.
José Raimundo de Souza Passos, Sheila Zambello de Pinho, Lídia Raquel de Carvalho, Martha Maria Mischan   +3 more
doaj   +1 more source

Discussion of Cuffless Blood Pressure Prediction Using Plethysmograph Based on a Longitudinal Experiment: Is the Individual Model Necessary?

Life, 2021
Using the Plethysmograph (PPG) signal to estimate blood pressure (BP) is attractive given the convenience and possibility of continuous measurement. However, due to the personal differences and the insufficiency of data, the dilemma between the accuracy ...
Koshiro Kido, Zheng Chen, Ming Huang, Toshiyo Tamura, Wei Chen, Naoaki Ono, Masachika Takeuchi, Md. Altaf-Ul-Amin, Shigehiko Kanaya   +8 more
doaj   +1 more source

An Improved Power Law for Nonlinear Least-Squares Fitting?

Data, 2017
Models based on a power law are prevalent in many areas of study. When regression analysis is performed on data sets modeled by a power law, the traditional model uses a lead coefficient.
Benjamin Helyer, Michael Courtney
doaj   +1 more source

A method for determining groups in nonparametric regression curves: Application to prefrontal cortex neural activity analysis

Mathematical Biosciences and Engineering, 2022
Generalized additive models provide a flexible and easily-interpretable method for uncovering a nonlinear relationship between response and covariates. In many situations, the effect of a continuous covariate on the response varies across groups defined ...
Javier Roca-Pardiñas, Celestino Ordóñez, Luís Meira Machado   +2 more
doaj   +1 more source

Incrementally Solving Nonlinear Regression Tasks Using IBHM Algorithm

Journal of Telecommunications and Information Technology, 2023
This paper considers the black-box approximation problem where the goal is to create a regression model using only empirical data without incorporating knowledge about the character of nonlinearity of the approximated function.
Paweł Zawistowski, Jarosław Arabas
doaj   +1 more source

Determination of the critical period of weed control in corn using a thermal basis Determinação do período crítico de controle de plantas daninhas em milho utilizando uma base térmica

Pesquisa Agropecuária Brasileira, 1999
Field studies were conducted over 3 years in southeast Buenos Aires, Argentina, to determine the critical period of weed control in maize (Zea mays L.).
Francisco Bedmar, Pablo Manetti, Gloria Monterubbianesi   +2 more
doaj   +1 more source

Evaluation of the paraoxonase-1 kinetic parameters of the lactonase activity by nonlinear fit of progress curves

Journal of Enzyme Inhibition and Medicinal Chemistry, 2020
Although paraoxonase-1 (PON1) activity has been demonstrated to be a reliable biomarker of various diseases, clinical studies have been based only on relative comparison of specific enzyme activities, which capture differences mainly due to (usually ...
Marko Goličnik, Aljoša Bavec
doaj   +1 more source