Results 31 to 40 of about 77,751 (215)

Assessment of radon levels in multistory buildings on example of eight Russian cities

Радиационная гигиена, 2022
In this work, the results of radon concentration measurements in samples of multi-storey apartment buildings in eight large cities of Russia are analyzed.
M. V. Zhukovsky, I. V. Yarmoshenko, A. D. Onishchenko, G. P. Malinovsky, A. V. Vasilyev, E. I. Nazarov   +5 more
doaj   +1 more source

A fourth-order arithmetic average compact finite-difference method for nonlinear singular elliptic PDEs on a 3D smooth quasi-variable grid network

MethodsX, 2023
The analysis of nonlinear elliptic PDEs representing stationary convection-dominated diffusion equation, Sine-Gordon equation, Helmholtz equation, and heat exchange diffusion model in a battery often lacks in closed-form solutions.
Navnit Jha, Bhagat Singh
doaj   +1 more source

Characterization of the Hardy property of means and the best Hardy constants [PDF]

, 2015
The aim of this paper is to characterize in broad classes of means the so-called Hardy means, i.e., those means $M\colon\bigcup_{n=1}^\infty \mathbb{R}_+^n\to\mathbb{R}_+$ that satisfy the inequality $$ \sum_{n=1}^\infty M(x_1,\dots,x_n) \le C\sum_{n=1}
Pasteczka, Paweł, Páles, Zsolt
core   +2 more sources

Beyond scalar quasi-arithmetic means: Quasi-arithmetic averages and quasi-arithmetic mixtures in information geometry

, 2023
We generalize quasi-arithmetic means beyond scalars by considering the gradient map of a Legendre type real-valued function. The gradient map of a Legendre type function is proven strictly comonotone with a global inverse. It thus yields a generalization of strictly mononotone and differentiable functions generating scalar quasi-arithmetic means ...
openaire   +2 more sources

Quasi-arithmetic means of continuous functions

Journal of the Mathematical Society of Japan, 1986
Let I be a proper interval, X a compact Hausdorff space and C(X,I) the set of continuous mappings from X into I. The authors define a mean on C(X,I) as a continuous functional satisfying \(M(a1_ X)=a\) for all \(a\in I\) and Mf\(\leq Mg\) if \(f\leq g\).
ITO, Takashi, NARA, Chie
openaire   +2 more sources

Subcommutativity of integrals and quasi-arithmetic means

, 2023
Let $(X, \mathscr{L}, λ)$ and $(Y, \mathscr{M}, μ)$ be finite measure spaces for which there exist $A \in \mathscr{L}$ and $B \in \mathscr{M}$ with either $0 < λ(A) < 1 < λ(X)$ and $0 < μ(B) < μ(Y)$, or the other way around. In addition, let $I \subseteq \mathbb{R}$ be a non-empty open interval, and suppose that $f,g\colon I \to \mathbb ...
Glazowska, Dorota, Leonetti, Paolo, Matkowski, Janusz, Tringali, Salvatore   +3 more
openaire   +2 more sources

M φ M ψ $M_{\varphi}M_{\psi}$ -convexity and separation theorems

Journal of Inequalities and Applications, 2022
A characterization of pairs of functions that can be separated by an M φ M ψ $M_{\varphi}M_{\psi}$ -convex function and related results are obtained. Also, a Hyers–Ulam stability result for M φ M ψ $M_{\varphi}M_{\psi}$ -convex functions is given.
Mea Bombardelli, Sanja Varošanec
doaj   +1 more source

The multivariate arithmetic Tutte polynomial [PDF]

, 2012
We introduce an arithmetic version of the multivariate Tutte polynomial, and (for representable arithmetic matroids) a quasi-polynomial that interpolates between the two.
Brändén, Petter, Moci, Luca
core   +7 more sources

Inequalities on several quasi-arithmetic means

Tamkang Journal of Mathematics, 2012
Inequalities on several quasi-arithmetic means are established by using convexity and concavity.
Shuoh-Jung Liu, Gou-Sheng Yang, Yi-Jhe Chen   +2 more
openaire   +2 more sources

Effectiveness of an Interventional Program on Nursing Staffs' Practices toward Prevention of Peripheral Intravenous Cannula Complications in Al-Diwaniyah Teaching Hospital

Kufa Journal for Nursing Sciences, 2021
Background: A peripheral intravenous cannula is an essential tool for delivering drugs, blood products, and nutritional fluids to patients intravenously.
Karrar F. Al-Naeli, Hakima Hassan
doaj   +1 more source