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Special Issue "Selected Papers from 14th Joint European Thermodynamics Conference"

A special issue of Entropy (ISSN 1099-4300).

Deadline for manuscript submissions: closed (1 September 2017)

Special Issue Editors

Guest Editor
Dr. Péter Ván

1. Department of Theoretical Physics, Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, HAS, Budapest H-1525, Hungary
2. Department of Energy Engineering, Budapest University of Technology and Economics, Budapest H-1521, Hungary
3. Montavid Thermodynamic Research Group, Hungary
E-Mail
Interests: non-equilibrium thermodynamics; spacetime
Guest Editor
Dr. Tamás Fülöp

1. Department of Energy Engineering, Budapest University of Technology and Economics, Budapest H-1521, Hungary
2. Montavid Thermodynamic Research Group, Hungary
E-Mail
Interests: objectivity; rheology; quantum mechanics

Special Issue Information

Dear Colleagues,

Please visit this site: http://jetc2017.hu, for a detailed description of this Special Issue. The Special Issue will mainly consist of selected papers presented at “14th Joint European Thermodynamics Conference”. Papers in the following topic are also welcomed on this Special Issue:

  • Non-Equilibrium Thermodynamics
  • Quantum Thermodynamics
  • Non-additive thermostatistics

Dr. Péter Ván
Dr. Tamás Fülöp
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (3 papers)

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Research

Open AccessArticle On the Uniqueness Theorem for Pseudo-Additive Entropies
Entropy 2017, 19(11), 605; doi:10.3390/e19110605
Received: 19 September 2017 / Revised: 8 November 2017 / Accepted: 10 November 2017 / Published: 12 November 2017
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Abstract
The aim of this paper is to show that the Tsallis-type (q-additive) entropic chain rule allows for a wider class of entropic functionals than previously thought. In particular, we point out that the ensuing entropy solutions (e.g., Tsallis entropy) can be
[...] Read more.
The aim of this paper is to show that the Tsallis-type (q-additive) entropic chain rule allows for a wider class of entropic functionals than previously thought. In particular, we point out that the ensuing entropy solutions (e.g., Tsallis entropy) can be determined uniquely only when one fixes the prescription for handling conditional entropies. By using the concept of Kolmogorov–Nagumo quasi-linear means, we prove this with the help of Darótzy’s mapping theorem. Our point is further illustrated with a number of explicit examples. Other salient issues, such as connections of conditional entropies with the de Finetti–Kolmogorov theorem for escort distributions and with Landsberg’s classification of non-extensive thermodynamic systems are also briefly discussed. Full article
(This article belongs to the Special Issue Selected Papers from 14th Joint European Thermodynamics Conference)
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Open AccessArticle Feynman’s Ratchet and Pawl with Ecological Criterion: Optimal Performance versus Estimation with Prior Information
Entropy 2017, 19(11), 576; doi:10.3390/e19110576
Received: 22 September 2017 / Revised: 18 October 2017 / Accepted: 23 October 2017 / Published: 26 October 2017
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Abstract
We study the optimal performance of Feynman’s ratchet and pawl, a paradigmatic model in nonequilibrium physics, using ecological criterion as the objective function. The analysis is performed by two different methods: (i) a two-parameter optimization over internal energy scales; and (ii) a one-parameter
[...] Read more.
We study the optimal performance of Feynman’s ratchet and pawl, a paradigmatic model in nonequilibrium physics, using ecological criterion as the objective function. The analysis is performed by two different methods: (i) a two-parameter optimization over internal energy scales; and (ii) a one-parameter optimization of the estimate for the objective function, after averaging over the prior probability distribution (Jeffreys’ prior) for one of the uncertain internal energy scales. We study the model for both engine and refrigerator modes. We derive expressions for the efficiency/coefficient of performance (COP) at maximum ecological function. These expressions from the two methods are found to agree closely with equilibrium situations. Furthermore, the expressions obtained by the second method (with estimation) agree with the expressions obtained in finite-time thermodynamic models. Full article
(This article belongs to the Special Issue Selected Papers from 14th Joint European Thermodynamics Conference)
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Open AccessFeature PaperArticle Exact Negative Solutions for Guyer–Krumhansl Type Equation and the Maximum Principle Violation
Entropy 2017, 19(9), 440; doi:10.3390/e19090440
Received: 22 July 2017 / Revised: 17 August 2017 / Accepted: 21 August 2017 / Published: 24 August 2017
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Abstract
Heat propagation in the Guyer–Krumhansl model is studied. The exact analytical solutions for the one-dimensional Guyer–Krumhansl equation are obtained. The operational formalism is employed. Some examples of initial functions are considered, modeling various initial heat pulses and distributions. The effect of the ballistic
[...] Read more.
Heat propagation in the Guyer–Krumhansl model is studied. The exact analytical solutions for the one-dimensional Guyer–Krumhansl equation are obtained. The operational formalism is employed. Some examples of initial functions are considered, modeling various initial heat pulses and distributions. The effect of the ballistic heat transfer in an over–diffusive regime is elucidated. The behavior of the solutions in such a regime is explored. The maximum principle and its violation for the obtained solutions are discussed in the framework of heat conduction. Examples of negative solutions for the Guyer–Krumhansl equation are demonstrated. Full article
(This article belongs to the Special Issue Selected Papers from 14th Joint European Thermodynamics Conference)
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