Results 71 to 80 of about 365,910 (236)

The electric and magnetic form factors of the proton [PDF]

open access: yes, 2013
The paper describes a precise measurement of electron scattering off the proton at momentum transfers of $0.003 \lesssim Q^2 \lesssim 1$\ GeV$^2$. The average point-to-point error of the cross sections in this experiment is $\sim$ 0.37%.
A. Esser   +25 more
core   +4 more sources

Encrypted Astronomy, Astral Mythologies, and Ancient Mexican Studies in Austria, 1910-1945

open access: yesRevista de Antropologia, 2019
This paper examines the beginnings of Austrian studies on ancient Mexico by analyzing the work of Damian Kreichgauer and Friedrich Röck in the early twentieth century.
Peter Rohrbacher
doaj   +1 more source

Direct-Splitting-Based CN-FDTD for Modeling 2D Material Nanostructure Problems

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
Incorporating a truncation of the complex-frequency-shifted perfectly matched layer (CFS-PML), the direct-splitting- based Crank-Nicolson finite-difference time-domain (CNDS-FDTD) is developed and applied to the infrared two-dimensional layered material (
Naixing Feng   +5 more
doaj   +1 more source

Is general relativity `essentially understood' ?

open access: yes, 2005
The content of Einstein's theory of gravitation is encoded in the properties of the solutions to his field equations. There has been obtained a wealth of information about these solutions in the ninety years the theory has been around.
Alcubierre   +146 more
core   +1 more source

Towards a new media archaeology? A report on some books and tendencies

open access: yesNECSUS, 2012
Over the last few years media archaeology has become an accepted method of research and has attracted an increasing number of scholars. Beginning in the 1980s with Friedrich Kittler’s groundbreaking books AUFSCHREIBESYSTEME (Discourse Networks) and ...
Petra Löffler
doaj   +1 more source

Hyperboloidal evolution of test fields in three spatial dimensions

open access: yes, 2010
We present the numerical implementation of a clean solution to the outer boundary and radiation extraction problems within the 3+1 formalism for hyperbolic partial differential equations on a given background. Our approach is based on compactification at
Anıl Zenginoğlu   +8 more
core   +1 more source

“Freedom” as a culture-bound concept in works by Friedrich Shiller

open access: yesStudia Humanitatis, 2019
The article analyses the concept “freedom” in works by a great German poet Friedrich Schiller. The aim of the research is to distinguish characteristics of the concept. The continuous sampling method was used to collect the data for the study.
Belykh Oksana Mykolayivna
doaj  

Detection of fixed points in spatiotemporal signals by clustering method

open access: yes, 2000
We present a method to determine fixed points in spatiotemporal signals. A 144-dimensioanl simulated signal, similar to a Kueppers-Lortz instability, is analyzed and its fixed points are reconstructed.Comment: 3 pages, 3 ...
A. Hutt   +15 more
core   +1 more source

New technologies wolframalpha while studying quantitative methods by bachelors

open access: yesRUDN Journal of Informatization in Education, 2013
The purpose of this article — representation of the main results of research of didactic opportunities of the new WolframAlpha technologies when studying quantitative methods by students of a bachelor degree.
D A Vlasov, A V Sinchukov
doaj  

Some observations on a new numerical method for solving Navier-Stokes equations [PDF]

open access: yes
An explicit-implicit technique for solving Navier-Stokes equations is described which, is much less complex than other implicit methods. It is used to solve a complex, two-dimensional, steady-state, supersonic-flow problem.
Kumar, A.
core   +1 more source

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