Results 41 to 50 of about 51,884 (308)

Crack path estimation in the shot-earth 772 by a discrete element method [PDF]

open access: yes, 2022
In the present paper, the fracture behaviour of the shot-earth 772, in terms of crack path, is numerically investigated. To such an aim, a version of the lattice discrete element method is used to numerically simulate fracture toughness testing performed,
Scorza D.   +6 more
core   +1 more source

A Precise-Integration Time-Domain Formulation Based on Auxiliary Differential Equation for Transient Propagation in Plasma

open access: yesIEEE Access, 2020
The electromagnetic wave propagation through plasma medium is one of the most important research fields in computational electromagnetics. A numerical formulation based on both the auxiliary differential equation (ADE) and the precise-integration time ...
Zhen Kang   +4 more
doaj   +1 more source

Discontinuous Galerkin methods for Friedrichs systems with irregular solutions [PDF]

open access: yes, 2004
This work is concerned with the numerical solution of Friedrichs systems by discontinuous Galerkin finite element methods (DGFEMs). Friedrichs systems are boundary value problems with symmetric, positive, linear first-order partial differential operators and allow the unified treatment of a wide range of elliptic, parabolic, hyperbolic and mixed-type ...
openaire   +2 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

ON THE RATE OF CONVERGENCE IN THE MULTIVARIATE CLT [PDF]

open access: yes, 1991
Götze F. ON THE RATE OF CONVERGENCE IN THE MULTIVARIATE CLT. ANNALS OF PROBABILITY. 1991;19(2):724-739.Berry-Esseen theorems are proved in the multidimensional central limit theorem without using Fourier methods.
Götze, Friedrich
core   +1 more source

Disease Course After Anti‐CD20 Discontinuation in Secondary Progressive Multiple Sclerosis—A Multicenter Long‐Term Longitudinal Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To describe long‐term outcomes after anti‐CD20 discontinuation in selected patients with secondary progressive multiple sclerosis (SPMS) who remained without subsequent disease‐modifying therapy (DMT). Methods We retrospectively analyzed data from four centers in Austria and Switzerland.
Ferdinand Otto   +12 more
wiley   +1 more source

Singularity Processing Method of Microstrip Line Edge Based on LOD-FDTD

open access: yesInternational Journal of Antennas and Propagation, 2014
In order to improve the performance of the accuracy and efficiency for analyzing the microstrip structure, a singularity processing method is proposed theoretically and experimentally based on the fundamental locally one-dimensional finite difference ...
Lei Li, Xin Zhang, Yingsong Li
doaj   +1 more source

Ozone measurement practice in the laboratory using Schönbein's method [PDF]

open access: yesGeoscience Communication, 2020
We present a laboratory technique to measure tropospheric ozone, following a traditional method developed by Christian Friedrich Schönbein in the 19th century.
I. A. Ramirez-Gonzalez   +4 more
doaj   +1 more source

Discontinuous Galerkin Methods for Friedrichs’ Systems. Part II. Second‐order Elliptic PDEs [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2006
This paper is the second part of a work attempting to give a unified analysis of discontinuous Galerkin methods. The setting under scrutiny is that of Friedrichs’ systems endowed with a particular $2 \times 2$ structure in which one unknown can be eliminated to yield a system of second-order elliptic-like PDEs for the remaining unknown.
Alexandre Ern, Jean-Luc Guermond
openaire   +1 more source

Home - About - Disclaimer - Privacy