Results 21 to 30 of about 185,563 (292)

On approximating the modified Bessel function of the first kind and Toader-Qi mean

open access: yesJournal of Inequalities and Applications, 2016
In the article, we present several sharp bounds for the modified Bessel function of the first kind I 0 ( t ) = ∑ n = 0 ∞ t 2 n 2 2 n ( n ! ) 2 $I_{0}(t)=\sum_{n=0}^{\infty}\frac{t^{2n}}{2^{2n}(n!)^{2}}$ and the Toader-Qi mean T Q ( a , b ) = 2 π ∫ 0 π ...
Zhen-Hang Yang, Yu-Ming Chu
doaj   +1 more source

Calibration of Mean Wind Profiles Using Wind Lidar Measurements

open access: yesApplied Sciences, 2023
This paper explores the applicability of Lidar wind measurements for the calibration of mean wind profiles depending on the extension in time and space of the available measurements.
Vincenzo Sepe   +3 more
doaj   +1 more source

Optimal Lower Generalized Logarithmic Mean Bound for the Seiffert Mean

open access: yesJournal of Applied Mathematics, 2013
We present the greatest value p such that the inequality P(a,b)>Lp(a,b) holds for all a,b>0 with a≠b, where P(a,b) and Lp(a,b) denote the Seiffert and pth generalized logarithmic means of a and b, respectively.
Ying-Qing Song   +3 more
doaj   +1 more source

Logarithmic Sobolev inequality for the invariant measure of the periodic Korteweg--de Vries equation. [PDF]

open access: yes, 2011
The periodic KdV equation arises from a Hamiltonian system with infinite-dimensional phase space L^2(T). Bourgain has shown that there exists a Gibbs measure \nu on balls in the phase space such that the Cauchy problem for KdV is well posed on the ...
Gordon Blower, Blower, Gordon
core   +1 more source

Signal Processing and Channel Modelling for 5G Millimeter-Wave Communication Environment

open access: yesJournal of Computing and Information Technology, 2023
Compared to frequency bands below 6 GHz, 5G millimeter waves offer several advantages, including a large bandwidth, minimal null delay, and flexible null port configuration.
Yu Qian
doaj   +1 more source

Inequalities for Generalized Logarithmic Means

open access: yesJournal of Inequalities and Applications, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xia Wei-Feng, Chu Yu-Ming
openaire   +4 more sources

Logarithmic estimates for mean-field models in dimension two and the Schrödinger–Poisson system

open access: yesComptes Rendus. Mathématique, 2022
In dimension two, we investigate a free energy and the ground state energy of the Schrödinger–Poisson system coupled with a logarithmic nonlinearity in terms of underlying functional inequalities which take into account the scaling invariances of the ...
Dolbeault, Jean   +2 more
doaj   +1 more source

The Weighted Logarithmic Mean

open access: yesJournal of Mathematical Analysis and Applications, 1994
Based on the integral formula \(L(x, y)= \int^ 1_ 0 x^ t y^{1- t} dt\) for the logarithmic mean in two variables, the author generalizes it to several variables by defining \[ L(\mu; x_ 1, x_ 2,\dots, x_ n)= \int x^{t_ 1}_ 1 x^{t_ 2}_ 2\cdots x^{t_ n}_ n d\mu(t).
openaire   +2 more sources

Optimal inequalities related to the logarithmic, identric, arithmetic and harmonic means

open access: yesJournal of Numerical Analysis and Approximation Theory, 2010
The logarithmic mean \(L(a,b)\), identric mean \(I(a,b)\), arithmeticmean \(A(a,b)\) and harmonic mean \(H(a,b)\) of two positive real values \(a\) and \(b\) are defined by\begin{align*}\label{main}&L(a,b)=\begin{cases}\tfrac{b-a}{\log b-\log a},& a\neq ...
Wei-feng Xia, Chu Yu-Ming
doaj   +2 more sources

On a Characterization of the Logarithmic Mean

open access: yesResults in Mathematics
AbstractIn the present note we are interested in proving the counterpart of the (right-hand side of the) celebrated Hermite–Hadamard inequality for $$\varphi $$ φ -convex functions. In particular, we prove that the only $$\varphi $$ φ -convex function for which the Hermite–Hadamard ...
Timothy Nadhomi   +2 more
openaire   +2 more sources

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