Results 61 to 70 of about 12,302 (226)

Approximation of lebesgue integrals by Riemann sums and lattice points in domains with fractal boundary

open access: yesMonatshefte f�r Mathematik, 1997
The general lattice point problem for ''large'' domains is concerned with a bounded and measurable set \(\mathcal D\subset{\mathbb R}^k\) (with characteristic function \(\chi_\mathcal D\)) which may be submitted to an arbitrary rotation \(\sigma\in SO(k)\), a shift by a vector \(\mathbf t\in{\mathbb R^k/\mathbb Z^k}\), and a dilation (''blowing up ...
openaire   +2 more sources

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke   +3 more
wiley   +1 more source

Effective uniform approximation by the Riemann zeta-function [PDF]

open access: yes, 2010
We apply an effective multidimensional Ω result of Voronin in order to obtain effective universality-type theorems for the Riemann zeta-function. We further use this approach to study approximation properties of linear combinations of derivatives of the ...
A. Laurincikas   +9 more
core   +1 more source

Sleep Health in Bulimia Nervosa: A Systematic Review

open access: yesEuropean Eating Disorders Review, EarlyView.
ABSTRACT Objective Research on sleep in bulimia nervosa (BN) is methodologically varied and yields inconsistent findings. This review synthesised BN‐sleep studies and examined whether comorbid mood disorders contribute to sleep disturbance. Method PsycINFO, Medline (Ovid), and Scopus were searched for English or French quantitative studies comparing ...
Samantha Kenny   +4 more
wiley   +1 more source

Riemann Theta Function, Pointwise Approximation, Uniform Approximation [PDF]

open access: yes, 2002
The Riemann theta function is a complex-valued function of g complex variables. It appears in the construction of many (quasi-) periodic solutions of various equations of mathematical physics.
Matthias Heil Alex   +2 more
core  

The combined effects of anisotropic porous medium and stably stratified fluid on free convective flow through an annulus

open access: yesJournal of Taibah University for Science, 2018
This paper documents the semi-analytical results for transient natural convection fluid flow between two concentric vertical cylinders of infinite lengths in the presence of anisotropic porous medium and stratified fluid.
Basant K. Jha, Muhammad K. Musa
doaj   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

open access: yesEnergy Science &Engineering, EarlyView.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen   +6 more
wiley   +1 more source

Effective uniform approximation by the Riemann zeta-function [PDF]

open access: yes, 2021
We apply an effective multidimensional Ω result of Voronin in order to obtain effective universality-type theorems for the Riemann zeta-function. We further use this approach to study approximation properties of linear combinations of derivatives of the ...
Laurincikas, Antanas   +4 more
core  

One-dimensional bio-thermo-mechanical impacts induced by laser pulse in a layer skin tissue by means of MGL model

open access: yesCase Studies in Thermal Engineering
The goal of this paper is to construct a novel model based on the recently modified Green and Lindsay model to study the bio-thermo-mechanical responses induced by uniform laser radiation in a thermoelastic biological skin tissue. The biological tissue’s
Ismail M. Tayel   +4 more
doaj   +1 more source

Toward an idiographic understanding of the role of sleep‐mood dynamics in adolescents' internalizing symptoms

open access: yesJCPP Advances, EarlyView.
Abstract Background Adolescence is marked by increased vulnerability to sleep disturbances and mood disorders. Understanding how day‐to‐day changes in sleep and mood are linked within the same individual is crucial for clarifying sleep's role in emerging internalizing disorders. However, the extent to which an adolescent's fluctuations in sleep predict
Konstantin Drexl   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy