Results 121 to 130 of about 115,920 (230)

Spikes for the gierer-meinhardt system with many segments of different diffusivities [PDF]

open access: yes, 2008
We rigorously prove results on spiky patterns for the Gierer-Meinhardt system with a large number of jump discontinuities in the diffusion coefficient of the inhibitor.
Tse, W, Wei, J, Winter, M
core   +2 more sources

Front and Turing patterns induced by Mexican-hat-like nonlocal feedback

open access: yes, 2015
We consider the effects of a Mexican-hat-shaped nonlocal spatial coupling, i.e., symmetric long-range inhibition superimposed with short-range excitation, upon front propagation in a model of a bistable reaction-diffusion system.
Schöll, Eckehard, Siebert, Julien
core   +1 more source

Density-dependent effects on Turing patterns and steady state bifurcation in a Beddington–DeAngelis-type predator–prey model

open access: yesBoundary Value Problems, 2019
In this paper, Turing patterns and steady state bifurcation of a diffusive Beddington–DeAngelis-type predator–prey model with density-dependent death rate for the predator are considered.
Hongwu Xu, Shengmao Fu
doaj   +1 more source

A Critical Appraisal of Labour's AI Agenda

open access: yesThe Political Quarterly, EarlyView.
Abstract This article critically evaluates Labour's ambitious AI agenda, situating it within the historical trajectory of UK AI policy and the techno‐solutionist assumptions underpinning current strategies. While Labour frames AI as a transformative tool for economic growth, state efficiency and public service reform, we argue that structural ...
Nathan Critch, Darcy Luke
wiley   +1 more source

Experimental Determination of Calcite Solubility in H2O‐KCl‐NaCl‐LiCl Solutions at 700°C and 8 kbar

open access: yesGeophysical Monograph Series, Page 245-257., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
James Eguchi, Yuan Li, Craig E. Manning
wiley  

+1 more source

Hippocampal Spike-Timing Correlations Lead to Hexagonal Grid Fields

open access: yes, 2017
Space is represented in the mammalian brain by the activity of hippocampal place cells as well as in their spike-timing correlations. Here we propose a theory how this temporal code is transformed to spatial firing rate patterns via spike-timing ...
Leibold, Christian   +1 more
core   +1 more source

Queering Institutional Milestones in Elite Higher Education: Queer Perspectives on Princeton University and Coeducation (1960–1980)

open access: yesGender &History, EarlyView.
ABSTRACT A new archive of oral history interviews from LGBTQIA‐identified alumni, faculty and staff reveals the complex ways that queer and transgender students understood, experienced and remembered the long transition from single‐sex to coeducation at Princeton University.
Ezelle Sanford III   +2 more
wiley   +1 more source

Morphogenetic metasurfaces: unlocking the potential of turing patterns. [PDF]

open access: yesNat Commun, 2023
Fromenteze T   +5 more
europepmc   +1 more source

Tales of Cyberspace and Artificial Intelligence: Diverging Stakeholderships?

open access: yesGlobal Policy, EarlyView.
ABSTRACT This article traces the evolution of the Internet from the 1990s to the 2020s and compares it with the development of Artificial Intelligence (AI), particularly following the public launch of ChatGPT in late 2022. It identifies both parallels and divergencies between these two overlapping technological domains, focusing on the growing ...
Johan Eriksson, Giampiero Giacomello
wiley   +1 more source

Forced patterns near a Turing-Hopf bifurcation

open access: yes, 2009
We study time-periodic forcing of spatially-extended patterns near a Turing-Hopf bifurcation point. A symmetry-based normal form analysis yields several predictions, including that (i) weak forcing near the intrinsic Hopf frequency enhances or suppresses
Anne J. Catllá   +4 more
core   +1 more source

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