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- Péter Ván
- 2002

In this paper we investigate and refine Liu’s procedure for the exploitation of the entropy inequality. We give a new-old proof of Liu’s theorem. We shortly compare the Coleman-Noll and Liu techniques and call the attention to the proper application of the constraints in the procedure. As an example the Ginzburg-Landau equation and some variants are derived.

- Tamás Sándor Biró, Péter Ván, Gergely Gábor Barnaföldi, Károly Ürmössy
- Entropy
- 2014

Certain fluctuations in particle number, n, at fixed total energy, E, lead exactly to a cut-power law distribution in the one-particle energy, ω, via the induced fluctuations in the phase-space volume ratio, Ωn(E − ω)/Ωn(E) = (1 − ω/E). The only parameters are 1/T = 〈β〉 = 〈n〉/E and q = 1−1/〈n〉+∆n2/〈n〉2. For the binomial distribution of n one obtains q =… (More)

We propose a novel first order, local equilibrium approach to special relativistic dissipative hydrodynamics. Using a particular separation of internal and flow energies we remove all known instabilities of the linear response approximation. This result provides a stable inclusion of heat conductivity into the description of first order viscous relativistic… (More)

Rateand state-dependent friction laws for velocity-step and healing are analysed from a thermodynamic point of view. Assuming a logarithmic deviation from steady-state, a unification of the classical Dieterich and Ruina models of rock friction is proposed.

- David Griffiths, Rob Koper, +34 authors Francis Casado
- 2007

Existing models of competence development are characterised by a fixed sequence of stages of which assessment by others and following a fixed set of competence development activities are obligatory components. This paper shows that these models do not do justice to the large diversity of learning needs among lifelong learners. It then presents a model,… (More)

- Dorien J.M. Snaar-Jagalska, Bettina Haastert, Petrus Schaap, Ewa SNAAR-JAGALSKAl, Péter Ván
- 2017

Citation for published version (APA): Peters, D. J. M., Snaar-Jagalska, B. E., Haastert, P. J. M. V., & Schaap, P. (1992). Lithium, an inhibitor of cAMP-induced inositol 1,4,5-trisphosphate accumulation in Dictyostelium discoideum, inhibits activation of guanine-nucleotide-binding regulatory proteins, reduces activation of adenylylcyclase, but potentiates… (More)

Causality and stability in relativistic dissipative hydrodynamics are important conceptual issues. We argue that causality is not restricted to hyperbolic set of differential equations. E.g. heat conduction equation can be causal considering the physical validity of the theory. Furthermore we propose a new concept of relativistic internal energy that… (More)

- Péter Ván, Frank W.M.B
- 2017

- Péter Ván
- 2002

In this paper we investigate and refine Liu’s procedure for the exploitation of the entropy inequality. We give a new-old proof of Liu’s theorem. We shortly compare the Coleman-Noll and Liu techniques and call the attention to the proper application of the constraints in the procedure. As an example the Ginzburg-Landau equation and some variants are derived.

- Péter Ván, Gyula Gróf
- 2012

Thermodynamics – contrary to its name – is not a dynamic theory. However, some relatively new developments, like finite time, endo-reversible or ordinary thermodynamics introduce time into thermostatics. In this framework the Second Law becomes a set of conditions ensuring the asymptotic stability of equilibrium. In this manuscript some examples are shown,… (More)