Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Oliver Penrose"'
Autor:
Paul C. Fife, Oliver Penrose
Publikováno v:
Electronic Journal of Differential Equations, Vol 1995, Iss 16, Pp 1-49 (1995)
We study certain approximate solutions of a system of equations formulated in an earlier paper (Physica D 43, 44-62 (1990)) which in dimensionless form are $$u_t + gamma w(phi)_t = abla^2u,,$$ $$alpha epsilon^2phi_t = epsilon^2abla^2phi + F(phi,u),,$
Externí odkaz:
https://doaj.org/article/e51849f93aad4451819bf171c15d37f1
Autor:
Oliver Penrose
Publikováno v:
Journal of Statistical Physics. 180:862-872
This paper is an attempt to understand time-reversal asymmetry better by developing the quantitative description of that asymmetry. The aim is not to explain the asymmetry, but to describe it in more detail. Two model systems are considered here; one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77915c7414d8932751b4e1b16099dfa1
https://doi.org/10.1007/s10955-020-02548-6
https://doi.org/10.1007/s10955-020-02548-6
Autor:
Oliver Penrose, Lars Onsager
Publikováno v:
Basic Notions of Condensed Matter Physics ISBN: 9780429494116
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70e5b229166a5258827707817ca837eb
https://doi.org/10.4324/9780429494116-14
https://doi.org/10.4324/9780429494116-14
Autor:
Eitan Abraham, Oliver Penrose
Publikováno v:
Physical review. E. 95(1-1)
Negative absolute temperatures were introduced into experimental physics by Purcell and Pound, who successfully applied this concept to nuclear spins; nevertheless, the concept has proved controversial: a recent article aroused considerable interest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7ca7aaf3a85322d82b07986f43bab2
https://pubmed.ncbi.nlm.nih.gov/28208392
https://pubmed.ncbi.nlm.nih.gov/28208392
Publikováno v:
Journal of Materials Science: Materials in Medicine. 21:2915-2922
The failure of brittle and quasi-brittle polymers can be attributed to a multitude of random microscopic damage modes, such as fibril breakage, crazing, and microfracture. As the load increases, new damage modes appear, and existing ones can transiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7be4b50be125a675aa2b81cd26b668ad
https://doi.org/10.1007/s10856-010-4155-9
https://doi.org/10.1007/s10856-010-4155-9
Autor:
Oliver Penrose
This volume demonstrates the manner in which statistical mechanics can be built up deductively from a small number of well-defined physical assumptions. A solid basis for the deductive structure is provided by embodying these assumptions in a system
Autor:
Oliver Penrose
Publikováno v:
Acta Materialia. 52:3901-3910
In 1983 Hillert obtained the formula Yη 2 ( c + − c − ) 2 for the driving force per unit area of grain boundary arising from elastic misfit in an isotropic alloy, where the mole fractions c + and c − on the two sides of the grain boundary are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e149867b31332a7ddc47aed6375094e
https://doi.org/10.1016/j.actamat.2004.05.004
https://doi.org/10.1016/j.actamat.2004.05.004
Publikováno v:
ResearcherID
We review recent extensions of the kinetic Ising model used to investigate phase separation in binary alloys. Firstly, vacancies are included to model the diffusion of the atoms on the microscopic scale more realistically. These can change the coarse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5304488ed7b54e08c72e4f98bb4fa18
https://doi.org/10.1080/01411590410001672639
https://doi.org/10.1080/01411590410001672639
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 279:100-109
We simulate coarsening in an alloy at 50% concentration using the Ising model, under either Kawasaki (K-) or vacancy (V-) dynamics, on three different lattices (sc, fcc, bcc) at five different temperatures. At times t greater than 2000 MCS the first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::786d173cb49948dc09688dcfaeaa22e3
https://doi.org/10.1016/s0378-4371(99)00527-0
https://doi.org/10.1016/s0378-4371(99)00527-0
Autor:
George Stell, Oliver Penrose
Publikováno v:
Journal of Statistical Physics. 100:89-95
For various lattice gas models with nearest neighbor exclusion (and, in one case, second-nearest neighbor exclusion as well), we obtain lower bounds on m, the average number of particles on the nonexcluded lattice sites closest to a given particle. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::889c7cc4e6c4571fce858633301ebb80
https://doi.org/10.1023/a:1018679309775
https://doi.org/10.1023/a:1018679309775