Results 11 to 20 of about 27,496 (207)

Fuzzy Approximate Entropy of Extrema Based on Multiple Moving Averages as a Novel Approach in Obstructive Sleep Apnea Screening

IEEE Journal of Translational Engineering in Health and Medicine, 2022
Objective: Obstructive sleep apnea (OSA) is a respiratory disease associated with autonomic nervous system dysfunction. As a novel method for analyzing OSA depending on heart rate variability, fuzzy approximate entropy of extrema based on multiple moving
Peiyu Weng, Keming Wei, Tian Chen, Mingjing Chen, Guanzheng Liu   +4 more
doaj   +1 more source

What is the maximum area of a house? A problem from the perspective of technology-oriented problem solving

Educação Matemática Debate, 2020
This paper presents the partial results of a Master's-degree-level research project on the contribution of employing the teaching-learning-assessment methodology through problem solving using GeoGebra, in connection with the different registers of ...
Dienifer Tainara Cardoso Lickefett, Ivanete Zuchi Siple, Elisandra Bar de Figueiredo   +2 more
doaj   +1 more source

A new Multi Sine-Cosine algorithm for unconstrained optimization problems.

PLoS ONE, 2021
The Sine-Cosine algorithm (SCA) is a population-based metaheuristic algorithm utilizing sine and cosine functions to perform search. To enable the search process, SCA incorporates several search parameters. But sometimes, these parameters make the search
Muhammad Zubair Rehman, Abdullah Khan, Rozaida Ghazali, Muhammad Aamir, Nazri Mohd Nawi   +4 more
doaj   +1 more source

On the Permeation of Polychlorinated Dibenzodioxins and Dibenzofurans through Lipid Membranes: Classical MD and Hybrid QM/MM-EDA Analysis

Membranes, 2022
The permeation of dioxin-like pollutants, namely, chlorinated dibenzodioxins and dibenzofurans, through lipid membranes has been simulated using classic molecular dynamics (CMD) combined with the umbrella sampling approach.
Raúl Alvarado, Gustavo Cárdenas, Juan J. Nogueira, Nicolás Ramos-Berdullas, Marcos Mandado   +4 more
doaj   +1 more source

Randomly stopped minima and maxima with exponential-type distributions

Nonlinear Analysis, 2019
Let {ξ1, ξ2,...} be a sequence of independent real-valued and possibly nonidentically distributed random variables. Suppose that η is a nonnegative, nondegenerate at 0 and integer-valued random variable, which is independent of {ξ1, ξ2,...}.
Olena Ragulina, Jonas Šiaulys
doaj   +1 more source

Spatially varying relevance of hydrometeorological hazards for vegetation productivity extremes [PDF]

Biogeosciences, 2022
Vegetation plays a vital role in the Earth system by sequestering carbon, producing food and oxygen, and providing evaporative cooling. Vegetation productivity extremes have multi-faceted implications, for example on crop yields or the atmospheric CO2 ...
J. Kroll, J. M. C. Denissen, M. Migliavacca, M. Migliavacca, W. Li, A. Hildebrandt, A. Hildebrandt, A. Hildebrandt, R. Orth   +8 more
doaj   +1 more source

The transfer theorems for density of extreme values

Lietuvos Matematikos Rinkinys, 2005
In this paper the transfer theorems for density of minima and maxima of independent identically distributed random variables is proved.
Arvydas Jokimaitis, Algimantas Aksomaitis   +1 more
doaj   +3 more sources

Satellite Global and Hemispheric Lower Tropospheric Temperature Annual Temperature Cycle

Remote Sensing, 2010
Previous analyses of the Earth’s annual cycle and its trends have utilized surface temperature data sets. Here we introduce a new analysis of the global and hemispheric annual cycle using a satellite remote sensing derived data set during the period 1979–
Michael A. Brunke, Roger A. Pielke, Richard T. McNider, John R. Christy, Benjamin M. Herman   +4 more
doaj   +1 more source

Three-Point Iterated Interval Half-Cutting for Finding All Local Minima of Unknown Single-Variable Function

Electrical, Control and Communication Engineering, 2022
A numerical method is suggested to find all local minima and the global minimum of an unknown single-variable function bounded on a given interval regardless of the interval length.
Romanuke Vadim
doaj   +1 more source

Nine-Point Iterated Rectangle Dichotomy for Finding All Local Minima of Unknown Bounded Surface

Applied Computer Systems, 2022
A method is suggested to find all local minima and the global minimum of an unknown two-variable function bounded on a given rectangle regardless of the rectangle area.
Romanuke Vadim
doaj   +1 more source