Results 1 to 10 of about 185,027 (296)

Information filtering via preferential diffusion [PDF]

open access: yesPhysical Review E, 2011
Recommender systems have shown great potential to address information overload problem, namely to help users in finding interesting and relevant objects within a huge information space. Some physical dynamics, including heat conduction process and mass or energy diffusion on networks, have recently found applications in personalized recommendation ...
Lü Linyuan, Liu Weiping
openaire   +6 more sources

Preferential behaviour and scaling in diffusive dynamics on networks [PDF]

open access: yesNew Journal of Physics, 2007
We study the fluctuation properties and return-time statistics on inhomogeneous scale-free networks using packets moving with two different dynamical rules; random diffusion and locally navigated diffusive motion with preferred edges. Scaling in the fluctuations occurs when the dispersion of a quantity at each node or edge increases like the its mean ...
Kujawski, B, Tadic, B, Rodgers, GJ
openaire   +4 more sources

Direct observation of substitutional and interstitial dopant diffusion in oxide grain boundary [PDF]

open access: yesNature Communications
Grain boundaries (GBs) serve as fast diffusion paths for dopant atoms, and the segregated dopants can significantly alter the materials’ properties. However, the exact mechanism of fast dopant diffusion along the GBs, particularly at atomic scale, is ...
Toshihiro Futazuka   +5 more
doaj   +2 more sources

Manipulating the Hydrogen‐Associated Insulator‐Metal Transition Through Artificial Microstructure Engineering [PDF]

open access: yesAdvanced Science
Hydrogen‐associated filling‐controlled Mottronics within electron‐correlated system provides a groundbreaking paradigm to explore exotic physical functionality and phenomena.
Xuanchi Zhou   +11 more
doaj   +2 more sources

Information filtering by similarity-preferential diffusion processes [PDF]

open access: yesEPL (Europhysics Letters), 2014
Recommender systems provide a promising way to address the information overload problem which is common in online systems. Based on past user preferences, a recommender system can find items that are likely to be relevant to a given user. Two classical physical processes, mass diffusion and heat conduction, have been used to design recommendation ...
Zeng An   +3 more
openaire   +4 more sources

Value certainty in drift-diffusion models of preferential choice. [PDF]

open access: yesPsychological Review, 2020
AbstractThedrift-diffusion model(DDM) is widely used and broadly accepted for its ability to account for binary choices (in both the perceptual and preferential domains) and response times (RT), as a function of the stimulus or the choice alternative (or option) values.
Douglas Lee, Marius Usher
openaire   +3 more sources

Flame Stabilization and Blow-Off of Ultra-Lean H2-Air Premixed Flames

open access: yesEnergies, 2021
The manner in which an ultra-lean hydrogen flame stabilizes and blows off is crucial for the understanding and design of safe and efficient combustion devices.
Faizan Habib Vance   +3 more
doaj   +1 more source

Directionality in van der Waals Interactions: the Case of 4-Acetylbiphenyl Adsorbed on Au(111) [PDF]

open access: yes, 2020
We report on a theoretical study of adsorption of 4-Acetylbiphenyl molecule and its diffusion properties in the main directions of the Au(111) surface.
Lorente, N., Robles, R., Zobac, V.
core   +2 more sources

Fluid-mechanical structure of methane-air and propane-air turbulent premixed flames

open access: yesNihon Kikai Gakkai ronbunshu, 2015
The flow fields of lean and rich propane-air and methane-air turbulent premixed flames of the identical conditions of laminar burning velocity and characteristic of turbulence have been closely examined by using a three-color six-beam LDV system.
Yasuko YOSHIDA   +2 more
doaj   +1 more source

Quantitative experimental monitoring of molecular diffusion in clay with positron emission tomography [PDF]

open access: yesSolid Earth, 2016
Clay plays a prominent role as barrier material in the geosphere. The small particle sizes cause extremely small pore sizes and induce low permeability and high sorption capacity.
J. Kulenkampff   +3 more
doaj   +1 more source

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