Results 101 to 110 of about 2,530,049 (324)

Laurent Polynomials and Superintegrable Maps [PDF]

, 2007
This article is dedicated to the memory of Vadim Kuznetsov, and begins with some of the author's recollections of him. Thereafter, a brief review of Somos sequences is provided, with particular focus being made on the integrable structure of Somos-4 ...
Andrew N.W. Hone, Hone, Andrew N.W.
core  

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

On quadratic symplectic mappings

Mathematische Zeitschrift, 1994
In this paper the algebraic form of quadratic symplectic mappings in \(\mathbb{R}^{2n}\) with the standard symplectic structure is investigated. For the planar case this leads to the familiar Hénon maps. For \(n \geq 2\) it is shown that any quadratic map can be written as product of a shear map to be multiplied from the right and left by affine ...
openaire   +2 more sources

Pick matrix conditions for sign-definite solutions of the algebraic Riccati equation [PDF]

, 2001
We study the existence of positive and negative semidefinite solutions of algebraic Riccati equations (ARE) corresponding to linear quadratic problems with an indefinite cost functional.
Rapisarda, P., Trentelman, H.L., Trentelman, H.L.,, P. Rapisarda, Rapisarda, P, Rapisarda, P.,, H.L. Trentelman, Trentelman, HL, Trentelman, Harry L., Rapisarda, Paolo   +9 more
core   +1 more source

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

Advanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang, Christopher Wöpke, Toni Seiler, Jared Faisst, Mathias List, Meike Kuhn, Bekcy Joseph, Alexander Ehm, Dietrich R. T. Zahn, Yana Vaynzof, Eva M. Herzig, Roderick C. I. Mackenzie, Uli Würfel, Maria Saladina, Carsten Deibel   +14 more
wiley   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Limits of degenerate parabolic quadratic rational maps

, 2013
We investigate the closure in moduli space of the set of quadratic rational maps which possess a degenerate parabolic fixed ...
Ecalle, Jean, Epstein, Adam L., Buff, Xavier, Epstein, Adam, Ecalle, J.   +4 more
core   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

Fine properties of monotone maps arising in optimal transport for non-quadratic costs

Analysis and Geometry in Metric Spaces
The cost functions considered are c(x,y)=h(x−y)c\left(x,y)=h\left(x-y), where h∈C2(Rn)h\in {C}^{2}\left({{\mathbb{R}}}^{n}) is homogeneous of degree p≥2p\ge 2 with a positive definite Hessian in the unit sphere.
Gutiérrez Cristian E., Montanari Annamaria   +1 more
doaj   +1 more source

A novel image encryption/decryption scheme based on integrating multiple chaotic maps

AIP Advances, 2020
In this paper, a novel framework is presented for chaotic image encryption. The proposed method is based on integrating multiple chaotic maps (e.g., logistic, tent, quadratic, cubic, and Bernoulli) to generate more robust chaotic maps in order to ...
Bedir Yousif, Fahmi Khalifa, Ahmed Makram, Ali Takieldeen   +3 more
doaj   +1 more source