Results 31 to 40 of about 640,777 (319)

Analysis and application of real-time compensation of positioning precision of the turntable with a harmonic function [PDF]

open access: yesMetrology and Measurement Systems, 2022
In order to guarantee the accuracy of turntable angle measurement, a real-time compensation method for turntable positioning precision based on harmonic analysis is proposed in this paper.
Yi Zhou   +5 more
doaj   +1 more source

Certain Hermite–Hadamard Inequalities for Logarithmically Convex Functions with Applications

open access: yesMathematics, 2019
In this paper, we discuss various estimates to the right-hand (resp. left-hand) side of the Hermite⁻Hadamard inequality for functions whose absolute values of the second (resp. first) derivatives to positive real powers are log-convex.
Shilpi Jain   +3 more
doaj   +1 more source

Effect of Viscous Energy Dissipation on Transient Laminar Free Convective Flow of a Dusty Viscous Fluid through a Porous Medium

open access: yesJournal of Applied Sciences and Environmental Management, 2023
A study on transient free convection flow of a dusty viscous fluid through a porous medium is important for improving the existing industrial processes and for developing new chemical and geothermal systems.
O. R. Jimoh, I. Ibrahim
doaj   +1 more source

Some identities on generalized harmonic numbers and generalized harmonic functions

open access: yesDemonstratio Mathematica, 2023
Abstract The harmonic numbers and generalized harmonic numbers appear frequently in many diverse areas such as combinatorial problems, many expressions involving special functions in analytic number theory, and analysis of algorithms.
Kim Dae San, Kim Hyekyung, Kim Taekyun
openaire   +3 more sources

Harmonic Current Estimation of Unmonitored Harmonic Sources With a Novel Oversampling Technique for Limited Datasets

open access: yesIEEE Access, 2022
In modern power systems, harmonics are amongst the significant issues attributed to renewable energy sources and nonlinear loads. Direct harmonic monitoring of the entire power system may be too costly or impractical, and measured data could be limited ...
Ahmadreza Eslami   +3 more
doaj   +1 more source

Five classes of binomial/harmonic series of convergence rate $ -1/4 $

open access: yesAIMS Mathematics
By applying the 'coefficient extraction method' to the symmetric transformation of hypergeometric series due to Chu and Zhang (2014), we examine systematically five classes of infinite series of convergence rate '$ -1/4 $' containing binomial ...
Chunli Li, Wenchang Chu
doaj   +1 more source

The monotonicity and convexity of a function involving psi function with applications

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we prove that the function x ↦ exp ( ψ ( x + 1 2 ) − 1 24 1 x 2 + 7 / 40 ) − x $$ x\mapsto\exp \biggl( \psi \biggl( x+\frac{1}{2} \biggr) -\frac {1}{24} \frac{1}{x^{2}+7/40} \biggr) -x $$ is decreasing from ( − 1 / 2 , ∞ ) $( -1/2,\infty )
Bang-Cheng Sun   +3 more
doaj   +1 more source

On harmonic numbers and Lucas sequences [PDF]

open access: yesPublicationes Mathematicae Debrecen, 2012
Harmonic numbers $H_k=\sum_{05 we have $$\sum_{k=0}^{p-1}u_{k+ }H_k/2^k=0 (mod p),$$ where $ =0$ if p=1,2,4,8 (mod 15), and $ =1$ otherwise.
openaire   +3 more sources

On the harmonic number expansion by Ramanujan [PDF]

open access: yesJournal of Inequalities and Applications, 2013
Let γ = 0.577215664 … Open image in new window denote the Euler-Mascheroni constant, and let the ...
Chao-Ping Chen, Cristinel Mortici
openaire   +2 more sources

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