Search results for "Arnold"
showing 10 items of 42 documents
Periodic and quasi-periodic orbits of the dissipative standard map
2011
We present analytical and numerical investigations of the dynamics of the dissipative standard map. We first study the existence of periodic orbits by using a constructive version of the implicit function theorem; then, we introduce a parametric representation, which provides the interval of the drift parameter ensuring the existence of a periodic orbit with a given period. The determination of quasi--periodic attractors is efficiently obtained using the parametric representation combined with a Newton's procedure, aimed to reduce the error of the approximate solution provided by the parametric representation. These methods allow us to relate the drift parameter of the periodic orbits to th…
Imagología: un emblema holandés del siglo XVIII sobre la imagen del español
2009
El presente artículo analiza el emblema «De Spanjaart» [«El español»] del libro StichtelykZinnebeelden [Emblemas edificantes] de Arnold Houbraken y GezineBrit (Amsterdam, 1723) a la luz de los estereotipos que sobre la imagen de los españoles prevalecían por entonces en Holanda y en el contexto de la disciplina de la Imagología. The present article analyzes the emblem «De Spanjaart» [«The Spaniard»] from the book Stichtelyk Zinnebeelden [Edifying Emblems] by Arnold Houbrakenand Gezine Brit (Amsterdam, 1723) in the light of the stereotypes of the image of Spaniards prevalent in Holland at that time and in the context of the discipline ofImagology (Imagestudies).
Musikmoderne als Mittel der Standortbestimmung eines "geistigen deutschen Juden". Ein Blick auf Arnold Schönberg in einer Vorkriegsnovelle Arnold Zwe…
2020
The aim of this article is to present the concept of "Europamüdigkeit" described by the German-Jewish writer Arnold Zweig (1887-1968) in his early work. The analysed novella titled "Quartettsatz von Schönberg" from 1913 is focused on a young emigrant who is exhausted with the European culture and encounters the music of Viennese modernism, bringing a totally new perception of the old continent.
Das sprachliche Bild „des Juden“ im essayistischen Werk Arnold Zweigs. Eine Analyse mithilfe des DIMEAN-Modells
2021
The concept of linguistic worldview has emerged as a theoretical term with analogous use outside of the discipline of linguistics, especially within the context of interdisciplinary studies, where literary works are approached from a linguistic perspective. This article aims to examine the linguistic image of the Jew in the essayistic work of German-Jewish writer Arnold Zweig (1887-1968), and to consider his role as an actor within a broader discourse. The methodological framework used is based on quantitative corpus analysis methodology and the DIMEAN model, as developed by Warnke and Spitzmüller.
Hybrid blind robust image watermarking technique based on DFT-DCT and Arnold transform
2018
In this paper, a robust blind image watermarking method is proposed for copyright protection of digital images. This hybrid method relies on combining two well-known transforms that are the discrete Fourier transform (DFT) and the discrete cosine transform (DCT). The motivation behind this combination is to enhance the imperceptibility and the robustness. The imperceptibility requirement is achieved by using magnitudes of DFT coefficients while the robustness improvement is ensured by applying DCT to the DFT coefficients magnitude. The watermark is embedded by modifying the coefficients of the middle band of the DCT using a secret key. The security of the proposed method is enhanced by appl…
Arnold Zweig - Aufnahme in Polen
2016
Śląski niemieckojęzyczny autor – Arnold Zweig – zajmował się do końca swojego życia traumatycznym okresem I wojny światowej i napisał wiele dzieł poświęconych tej tematyce. Artykuł ten w pierwszej kolejności prezentuje zainteresowanie osobą Arnolda Zweiga w Polskiej Republice Ludowej oraz opisuje recepcję tłumaczeń jego powieści autorstwa nieżyjącej już tłumaczki Wandy Kragen. W drugiej części niniejszej publikacji autorka skupia się na scharakteryzowaniu powieści „Junge Frau von 1914“ (Młoda kobieta z roku 1914).
Floquet spectrum for two-level systems in quasiperiodic time-dependent fields
1992
We study the time evolution ofN-level quantum systems under quasiperiodic time-dependent perturbations. The problem is formulated in terms of the spectral properties of a quasienergy operator defined in an enlarged Hilbert space, or equivalently of a generalized Floquet operator. We discuss criteria for the appearance of pure point as well as continuous spectrum, corresponding respectively to stable quasiperiodic dynamics and to unstable chaotic behavior. We discuss two types of mechanisms that lead to instability. The first one is due to near resonances, while the second one is of topological nature and can be present for arbitrary ratios between the frequencies of the perturbation. We tre…
Zvaigžņotā Debess: 2008, Rudens
2008
Latvijas Zinātņu akadēmija, Latvijas Universitāte
Zvaigžņotā Debess: 2007/08, Ziema
2007
Latvijas Zinātnes padome, Latvijas Universitāte
Invariant rotational curves in Sitnikov's Problem
1993
The Sitnikov's Problem is a Restricted Three-Body Problem of Celestial Mechanics depending on a parameter, the eccentricity,e. The Hamiltonian,H(z, v, t, e), does not depend ont ife=0 and we have an integrable system; ife is small the KAM Theory proves the existence of invariant rotational curves, IRC. For larger eccentricities, we show that there exist two complementary sequences of intervals of values ofe that accumulate to the maximum admissible value of the eccentricity, 1, and such that, for one of the sequences IRC around a fixed point persist. Moreover, they shrink to the planez=0 ase tends to 1.