Results 101 to 110 of about 9,176,618 (297)
Rigidity percolation on aperiodic lattices
, 1997 We studied the rigidity percolation (RP) model for aperiodic (quasi-crystal) lattices. The RP thresholds (for bond dilution) were obtained for several aperiodic lattices via computer simulation using the "pebble game" algorithm.
A. Losev +13 more
core +2 more sources
Quasicrystals, aperiodic order, and groupoid von Neumann algebras
Comptes Rendus. Mathématique, 2002 We introduce tight binding operators for quasicrystals that are parametrized by Delone sets. These operators can be regarded in a natural operator algebra framework that encodes the long range aperiodic order. This algebraic point of view allows us to study spectral theoretic properties.
Lenz, Daniel, Stollmann, Peter
openaire +2 more sources
Forecasting Natural Gas Prices in Real Time
Journal of Applied Econometrics, EarlyView.ABSTRACT This paper provides a comprehensive analysis of the forecastability of the real price of natural gas in the United States at the monthly frequency considering a universe of models that differ in complexity and economic content. We find that considerable reductions in mean‐squared prediction error relative to a no‐change benchmark can be ...
Christiane Baumeister +3 more
wiley +1 more source
Formation-Containment Control of Second-Order Multiagent Systems via Intermittent Communication
Complexity, 2018 This paper investigates the formation-containment control of second-order multiagent systems with intermittent communication. Distributed coordination control algorithms are proposed under aperiodic intermittent communication, where each agent only ...
Mao-Dong Xia, Cheng-Lin Liu, Fei Liu
doaj +1 more source
Linking Age Changes in Human Cortical Microcircuits to Impaired Brain Function and EEG Biomarkers. [PDF]
Aging CellWe integrated human data of aging‐related reductions in inhibition, NMDA function, and dendritic spines into detailed models of cortical microcircuits. Simulations showed that the cellular aging mechanisms accounted for many of the age‐related changes seen in human EEG and could be estimated accurately using machine learning from their EEG biomarkers ...
Guet-McCreight A +3 more
europepmc +2 more sources
Comparability in the graph monoid
, 2020 Let $\Gamma$ be the infinite cyclic group on a generator $x.$ To avoid confusion when working with $\mathbb Z$-modules which also have an additional $\mathbb Z$-action, we consider the $\mathbb Z$-action to be a $\Gamma$-action instead. Starting from a
Hazrat, Roozbeh, Vas, Lia
core
Laser &Photonics Reviews, EarlyView.Detuning modulated composite segmentation (DMCS) enables robust spontaneous parametric down‐conversion with sevenfold improved temperature stability compared to conventional designs, opening new possibilities for stable quantum photon sources. ABSTRACT Spontaneous parametric down conversion (SPDC) holds a pivotal role in quantum physics, facilitating ...
Muhammad Erew +5 more
wiley +1 more source
Applied Sciences, 2018 We demonstrate a compact blue and orange-two color continuous wave laser source emitting at 487 nm and from 597.4 to 600.3 nm, respectively. The temperature tunable coherent orange radiation is achieved by frequency mixing 974 nm laser diode (LD) and a C-
Dismas K. Choge +5 more
doaj +1 more source
Homogeneous holographic viscoelastic models and quasicrystals
Physical Review Research, 2020 We show that the field theories dual to the homogeneous holographic models with spontaneously broken translations display several distinctive properties of quasicrystals, aperiodic crystals with long-range order (e.g., incommensurate charge density waves)
Matteo Baggioli
doaj +1 more source
On diagonal quasi-free automorphisms of simple Cuntz-Krieger algebras
, 2018 We show that an outer action of a finite abelian group on a simple Cuntz-Krieger algebra is strongly approximately inner in the sense of Izumi if the action is given by diagonal quasi-free automorphisms and the associated matrix is aperiodic.
Barlak, Selçuk, Szabó, Gábor
core +1 more source