Results 41 to 50 of about 867,953 (285)

Temporal Self-Organization in Galaxy Formation

open access: yes, 2014
We report on the discovery of a relation between the number of star formation (SF) peaks per unit time, $\nu_{\rm peak}$, and the size of the temporal smoothing window function, $\Delta t$, used to define the peaks: $\nu_{\rm peak}\propto\Delta t^{1-\phi}
Cen, Renyue
core   +1 more source

Pediatric Oncology Nursing Competencies in Latin America and the Caribbean: A Scoping Review to Inform Practice, Education, and Research

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Nurses are central to cancer care for children and adolescents, yet no comprehensive synthesis has defined essential core competencies for pediatric oncology nursing (PON) practice internationally, particularly in Latin America and the Caribbean (LAC).
Luís Carlos Lopes‐Júnior   +7 more
wiley   +1 more source

Collective self-caging of active filaments in virtual confinement

open access: yesNature Communications
Motility coupled to responsive behavior is essential for many microorganisms to seek and establish appropriate habitats. One of the simplest possible responses, reversing the direction of motion, is believed to enable filamentous cyanobacteria to form ...
Maximilian Kurjahn   +6 more
doaj   +1 more source

Robustness of ballistic transport in antidot superlattices

open access: yesNew Journal of Physics, 2019
The magneto-resistance of antidot lattices shows pronounced peaks, which became a hallmark of ballistic electron transport. While most studies agree that they reflect the interplay of regular and chaotic motion in the quasi-classical dynamics, the exact ...
George Datseris   +2 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Scanning and resetting the phase of a pinned spiral wave using periodic far field pulses

open access: yesNew Journal of Physics, 2016
Spiral waves in cardiac tissue can pin to tissue heterogeneities and form stable pinned waves. These waves can be unpinned by electric stimuli applied close to the pinning center during the vulnerable window of the spiral. Using a phase transition curve (
T K Shajahan   +4 more
doaj   +1 more source

Analysis of Synaptic Scaling in Combination with Hebbian Plasticity in Several Simple Networks

open access: yesFrontiers in Computational Neuroscience, 2012
Conventional synaptic plasticity in combination with synaptic scaling is a biologically plausible plasticity rule that guides the development of synapses towards stability.
Christian eTetzlaff   +4 more
doaj   +1 more source

Topology dependence of on-demand ride-sharing

open access: yesApplied Network Science, 2020
Traffic is a challenge in rural and urban areas alike with negative effects ranging from congestion to air pollution. Ride-sharing poses an appealing alternative to personal cars, combining the traffic-reducing ride bundling of public transport with much
Debsankha Manik, Nora Molkenthin
doaj   +1 more source

Efficiency of navigation strategies for active particles in rugged landscapes

open access: yesFrontiers in Physics, 2022
Optimal navigation in complex environments is a problem with multiple applications ranging from designing efficient search strategies to engineering microscopic cargo delivery. When motion happens in presence of strong external forces, route optimization
Lorenzo Piro   +3 more
doaj   +1 more source

Self-organization of value and demand

open access: yes, 2000
We study the dynamics of exchange value in a system composed of many interacting agents. The simple model we propose exhibits cooperative emergence and collapse of global value for individual goods.
Akgiray   +17 more
core   +1 more source

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