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Solving Multi-Group Reflected Spherical Reactor System of Equations Using the Homotopy Perturbation Method

open access: yesMathematics, 2022
The solution of the complex neutron diffusion equations system of equations in a spherical nuclear reactor is presented using the homotopy perturbation method (HPM); the HPM is a remarkable approximation method that successfully solves different systems ...
Mohammad Shqair   +2 more
doaj   +1 more source

Conirmatory Factor Analysis of Depression, Anxiety and Stress 21 (DASS 21) scale in a study on Occupational Health Psychology in Health Care Professionals from Anand, Gujarat [PDF]

open access: yesHealthline, 2023
Introduction: Conirmatory factor analysis (CFA) is a statistical technique to verify the factor structure of a set of observed variables. Objective: The study was conducted with an objective to study the psychometric properties of DASS 21 scale by ...
Deepak B Sharma, Himanshu Sharma
doaj   +1 more source

Mixed‐integer stochastic evaluation of battery energy storage system integration strategies in distribution systems

open access: yesIET Generation, Transmission & Distribution, 2022
This paper presents a new approach to the problem of defining an investment policy in battery energy storage systems in active distribution networks, taking into account a diversity of uncertainties. The proposed methodology allows the selection of type,
Camilo Alberto Sepúlveda Rangel   +3 more
doaj   +1 more source

High Accuracy Spline Explicit Group (SEG) Approximation for Two Dimensional Elliptic Boundary Value Problems. [PDF]

open access: yesPLoS ONE, 2015
Over the last few decades, cubic splines have been widely used to approximate differential equations due to their ability to produce highly accurate solutions.
Joan Goh, Norhashidah Hj M Ali
doaj   +1 more source

Tensor renormalization group study of (3+1)-dimensional ℤ2 gauge-Higgs model at finite density

open access: yesJournal of High Energy Physics, 2022
We investigate the critical endpoints of the (3+1)-dimensional ℤ2 gauge-Higgs model at finite density together with the (2+1)-dimensional one at zero density as a benchmark using the tensor renormalization group method.
Shinichiro Akiyama, Yoshinobu Kuramashi
doaj   +1 more source

A Novel Sampling Method Based on Normal Search Particle Swarm Optimization for Active Learning Reliability Analysis

open access: yesApplied Sciences, 2023
In active learning reliability methods, an approximation of limit state function (LSF) with high precision is the key to accurately calculating the failure probability (Pf).
Yi-li Yuan   +4 more
doaj   +1 more source

A review of effect sizes and their confidence intervals, Part {I}: The Cohen's d family [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2018
Effect sizes and confidence intervals are important statistics to assess the magnitude and the precision of an effect. The various standardized effect sizes can be grouped in three categories depending on the experimental design: measures of the ...
Goulet-Pelletier, Jean-Christophe   +1 more
doaj   +1 more source

Load Identification for the More Electric Aircraft Distribution System Based on Intelligent Algorithm

open access: yesAerospace, 2022
Accurate identification of electrical load working status can provide information support to the remote electrical distribution system (EDS) of more electric aircraft (MEA), which could use it to realize redundant switching and protection.
Juan Yang, Xingwang Bao, Zhangang Yang
doaj   +1 more source

SIMPLIFIED MATHEMATICAL MODEL OF GROUP OF OVERHEAD POWER LINES MAGNETIC FIELD

open access: yesElectrical engineering & Electromechanics, 2020
Aim. The method for design of simplified mathematical model of the group of overhead power lines magnetic field allowing to reduce the number of conductors which are taken into account in the model and field and allowing to reduce the sensitivity of the ...
B. I. Kuznetsov   +2 more
doaj   +1 more source

Battery SOH estimation based on decision tree and improved support vector machine regression algorithm

open access: yesFrontiers in Energy Research, 2023
Battery state of health (SOH) estimation is crucial for the estimation of the remaining driving range of electric vehicles and is one of the core functions of the battery management system (BMS). The lithium battery feature sample data used in this paper
Lijun Qian, Liang Xuan, Jian Chen
doaj   +1 more source

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