•Journal•ISSN: 1099-4300

# Entropy

About: Entropy is an academic journal. The journal publishes majorly in the area(s): Entropy (information theory) & Principle of maximum entropy. It has an ISSN identifier of 1099-4300. It is also open access. Over the lifetime, 8054 publication(s) have been published receiving 91437 citation(s). The journal is also known as: thermodynamic entropy.

Topics: Entropy (information theory), Principle of maximum entropy, Information theory, Mutual information, Entropy (classical thermodynamics)

##### Papers published on a yearly basis

##### Papers

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TL;DR: The emergence of the 0-law, I- law, II-law and III-law of thermodynamics from quantum considerations is presented and it is claimed that inconsistency is the result of faulty analysis, pointing to flaws in approximations.

Abstract: Quantum thermodynamics addresses the emergence of thermodynamic laws from quantum mechanics. The viewpoint advocated is based on the intimate connection of quantum thermodynamics with the theory of open quantum systems. Quantum mechanics inserts dynamics into thermodynamics, giving a sound foundation to finite-time-thermodynamics. The emergence of the 0-law, I-law, II-law and III-law of thermodynamics from quantum considerations is presented. The emphasis is on consistency between the two theories, which address the same subject from different foundations. We claim that inconsistency is the result of faulty analysis, pointing to flaws in approximations.

659 citations

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TL;DR: For readers interested in the Prigogine school of thermodynamics, this book is the first choice because it is a textbook.

Abstract: For readers interested in the Prigogine school of thermodynamics, this book is the first choice because it is a textbook.[...]

507 citations

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TL;DR: Further advances are needed to better define model thresholds, to test model significance, and to address model selection to strengthen the utility of Maxent for wildlife research and management.

Abstract: Maximum entropy (Maxent) modeling has great potential for identifying distributions and habitat selection of wildlife given its reliance on only presence locations. Recent studies indicate Maxent is relatively insensitive to spatial errors associated with location data, requires few locations to construct useful models, and performs better than other presence-only modeling approaches. Further advances are needed to better define model thresholds, to test model significance, and to address model selection. Additionally, development of modeling approaches is needed when using repeated sampling of known individuals to assess habitat selection. These advancements would strengthen the utility of Maxent for wildlife research and management.

489 citations

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TL;DR: It is shown that intermetallic phases are consistent with HEA definitions, and the strategy developed here includes both single-phase, solid solution HEAs and HEAs with intentional addition of a 2nd phase for particulate hardening.

Abstract: We develop a strategy to design and evaluate high-entropy alloys (HEAs) for structural use in the transportation and energy industries. We give HEA goal properties for low (≤150 °C), medium (≤450 °C) and high (≥1,100 °C) use temperatures. A systematic design approach uses palettes of elements chosen to meet target properties of each HEA family and gives methods to build HEAs from these palettes. We show that intermetallic phases are consistent with HEA definitions, and the strategy developed here includes both single-phase, solid solution HEAs and HEAs with intentional addition of a 2nd phase for particulate hardening. A thermodynamic estimate of the effectiveness of configurational entropy to suppress or delay compound formation is given. A 3-stage approach is given to systematically screen and evaluate a vast number of HEAs by integrating high-throughput computations and experiments. CALPHAD methods are used to predict phase equilibria, and high-throughput experiments on materials libraries with controlled composition and microstructure gradients are suggested. Much of this evaluation can be done now, but key components (materials libraries with microstructure gradients and high-throughput tensile testing) are currently missing. Suggestions for future HEA efforts are given.

482 citations

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TL;DR: The theoretical foundations of the permutation entropy are analyzed, as well as the main recent applications to the analysis of economical markets and to the understanding of biomedical systems.

Abstract: Entropy is a powerful tool for the analysis of time series, as it allows describing the probability distributions of the possible state of a system, and therefore the information encoded in it. Nevertheless, important information may be codified also in the temporal dynamics, an aspect which is not usually taken into account. The idea of calculating entropy based on permutation patterns (that is, permutations defined by the order relations among values of a time series) has received a lot of attention in the last years, especially for the understanding of complex and chaotic systems. Permutation entropy directly accounts for the temporal information contained in the time series; furthermore, it has the quality of simplicity, robustness and very low computational cost. To celebrate the tenth anniversary of the original work, here we analyze the theoretical foundations of the permutation entropy, as well as the main recent applications to the analysis of economical markets and to the understanding of biomedical systems.

439 citations