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pro vyhledávání: '"Warren, Patrick"'
We critically examine a broad class of explicitly polarisable soft solvent models aimed at applications in dissipative particle dynamics. We obtain the dielectric permittivity using the fluctuating box dipole method in linear response theory, and ver
Externí odkaz:
http://arxiv.org/abs/2404.08373
This paper introduces and tests an unsupervised method for detecting novel coordinated inauthentic information operations (CIOs) in realistic settings. This method uses Bayesian inference to identify groups of accounts that share similar account-leve
Externí odkaz:
http://arxiv.org/abs/2401.06205
In an externally imposed electrolyte (salt) concentration gradient, charged colloids drift at speeds of order one micrometre per second. This phenomenon is known as diffusiophoresis. In systems with multiple salts and 'crossed' salt gradients, a nonl
Externí odkaz:
http://arxiv.org/abs/2311.13287
We elucidate the origin of the critical Stokes number $\mathrm{St}_\mathrm{c}$ for inertial particle capture by obstacles in flow fields, and explain the empirical observation made by Araujo et al. [Phys. Rev. Lett. 97, 138001 (2006)] that the captur
Externí odkaz:
http://arxiv.org/abs/2310.03474
Autor:
Linvill, Darren L., Warren, Patrick L.
This paper presents four examples of different ways that coordinated influence operations exert pressure on the prominence of ideas on social networks. We argue that these examples illustrate the four archetypical paths to influence: promotion by str
Externí odkaz:
http://arxiv.org/abs/2308.09818
Autor:
Richards, James A., Warren, Patrick B., Hodgson, Daniel J. M., Lips, Alex, Poon, Wilson C. K.
The hydrodynamic regime of the Stribeck curve giving the friction coefficient $\mu$ as a function of the dimensionless relative sliding speed (the Sommerfeld number, $S$) of two contacting non-conformal surfaces is usually considered trivial, with $\
Externí odkaz:
http://arxiv.org/abs/2306.17696
We show that the hydrodynamic lubrication of contacting conformal surfaces with a typical texture height gives rise to a universal behaviour in the Stribeck curve in which the friction coefficient shows an anomalous power-law dependence on the Sommer
Externí odkaz:
http://arxiv.org/abs/2306.17694
A parallel plate capacitor containing an electrolytic solution is the simplest model of a supercapacitor, or electric double layer capacitor. Using both analytical and numerical techniques, we solve the Poisson-Nernst-Planck equations for such a syst
Externí odkaz:
http://arxiv.org/abs/2303.07859
An electric double layer capacitor (EDLC) stores energy by modulating the spatial distribution of ions in the electrolytic solution that it contains. We determine the mean-field time scales for planar EDLC relaxation to equilibrium, after a potential
Externí odkaz:
http://arxiv.org/abs/2301.00610
Autor:
Warren, Patrick B.
The concept of the partial osmotic pressure of ions in an electrolyte solution is critically examined. In principle these can be defined by introducing a solvent-permeable wall and measuring the force per unit area which can certainly be attributed t
Externí odkaz:
http://arxiv.org/abs/2212.04006