Results 51 to 60 of about 27,771,751 (275)

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

Ex-Movère. Narrating Places with Images

open access: yesimg journal, 2023
Through paintings, engravings, short texts it is possible to know a place and at the same time discover the propensities, interests, ideological inclinations of each author.
Alessandra Palma
doaj   +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

Global Affinities: The Natural Method and Anomalous Plants in the Nineteenth Century

open access: yesHoST, 2021
Approaching from an analysis of the work of Robert Brown (1773-1858) and Friedrich Welwitsch (1806–1872) on Rafflesia and Welwitschia, this article explores how the “natural method” became a tool for understanding extra-European flora in the nineteenth ...
Kury Lorelai, Albuquerque Sara
doaj   +1 more source

An extension to the OVH concept for knowledge‐based dose volume histogram prediction in lung tumor volumetric‐modulated arc therapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Volumetric‐modulated arc therapy (VMAT) treatment planning allows a compromise between a sufficient coverage of the planning target volume (PTV) and a simultaneous sparing of organs‐at‐risk (OARs). Particularly in the case of lung tumors, deciding whether it is possible or worth spending more time on further improvements of a treatment
Johann Brand   +4 more
wiley   +1 more source

Efficient and accurate extraction of in vivo calcium signals from microendoscopic video data [PDF]

open access: yeseLife, 2016
In vivo calcium imaging through microendoscopic lenses enables imaging of previously inaccessible neuronal populations deep within the brains of freely moving animals.
Pengcheng Zhou   +13 more
semanticscholar   +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

Development and Validation of a One‐Dimensional Finite Difference Simulation Scheme for Polymer Laser Powder Bed Fusion with Application to the Effect of the Inter Layer Time

open access: yesAdvanced Engineering Materials, EarlyView.
The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch   +4 more
wiley   +1 more source

EFSUMB Guidelines and Recommendations on the Clinical Use of Ultrasound Elastography. Part 1: Basic Principles and Technology

open access: yesUltraschall in der Medizin, 2013
The technical part of these Guidelines and Recommendations, produced under the auspices of EFSUMB, provides an introduction to the physical principles and technology on which all forms of current commercially available ultrasound elastography are based ...
J. Bamber   +20 more
semanticscholar   +1 more source

Efficient implementation of the GW approximation within the all-electron FLAPW method [PDF]

open access: yes, 2010
We present an implementation of the GW approximation for the electronic self-energy within the full-potential linearized augmented-plane-wave (FLAPW) method.
C. Friedrich, S. Blugel, A. Schindlmayr
semanticscholar   +1 more source

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