Results 11 to 20 of about 449,947 (310)

Entropy and gravity [PDF]

open access: yesEntropy, 2012
The effect of gravity upon changes of the entropy of a gravity-dominated system is discussed. In a universe dominated by vacuum energy, gravity is repulsive, and there is accelerated expansion.
Grøn, Øyvind
core   +6 more sources

Hochschild Entropy and Categorical Entropy

open access: yesArnold Mathematical Journal, 2022
22 pages.
Kohei Kikuta, Genki Ouchi
openaire   +2 more sources

On the Categorical Entropy and the Topological Entropy [PDF]

open access: yesInternational Mathematics Research Notices, 2017
To an exact endofunctor of a triangulated category with a split-generator, the notion of entropy is given by Dimitrov-Haiden-Katzarkov-Kontsevich, which is a (possibly negative infinite) real-valued function of a real variable. In this paper, we propose a conjecture which naturally generalizes the theorem by Gromov-Yomdin, and show that the categorical
Kikuta, Kohei, Takahashi, Atsushi
openaire   +2 more sources

Acknowledgement to Reviewers of Entropy in 2019

open access: yesEntropy, 2020
The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not[...]
Entropy Editorial Office
doaj   +1 more source

Entropy 2019 Best Paper Award

open access: yesEntropy, 2020
On behalf of the Editor-in-Chief, Prof [...]
Entropy Editorial Office
doaj   +1 more source

High-Temperature Mechanical Properties of NbTaHfTiZrV0.5 Refractory High-Entropy Alloys

open access: yesEntropy, 2023
The NbTaHfTiZrV0.5 is a refractory multi-principal-element alloy with high strength and good ductility at room temperature. It is important for possible high-temperature applications to investigate the deformation mechanism of the NbTaHfTiZrV0.5 alloy at
Zhangquan Liu   +3 more
doaj   +1 more source

Microgravity Spherical Droplet Evaporation and Entropy Effects

open access: yes, 2023
Recent efforts to understand low-temperature combustion (LTC) in internal combustion engines highlight the need to improve chemical kinetic mechanisms involved in the negative temperature coefficient (aka cool flame) regime.
Depcik, Christopher
core   +1 more source

Entropy of the Mixture of Sources and Entropy Dimension [PDF]

open access: yesIEEE Transactions on Information Theory, 2012
We investigate the problem of the entropy of the mixture of sources. There is given an estimation of the entropy and entropy dimension of convex combination of measures. The proof is based on our alternative definition of the entropy based on measures instead of partitions.
Marek Smieja, Jacek Tabor
openaire   +3 more sources

Electric field created p–n junction in composite films made from carbon nanotubes, iron (III) sulfate and polyvinyl alcohol

open access: yesScientific Reports, 2022
Suspension made of Fe2(SO4)3(aq), polyvinyl alcohol and carbon nanotubes is placed in electric field to separate charges. Charges remain separated as suspension solidifies, forming composite films with cations and anions enriched at opposite sides ...
Hsin-Jung Tsai   +3 more
doaj   +1 more source

High-Temperature Tribological Behavior of Al0.3Cr0.5Fe1.5Mn0.5Ni High-Entropy Alloys With Addition of Titanium and Carbon

open access: yesFrontiers in Materials, 2022
In this study, the Al0.3Cr0.5Fe1.5Mn0.5Ni high-entropy alloys (HEAs) with addition of titanium and carbon was prepared. The as-cast alloys were composed of FCC solid solution and TiC particles, and were further aged and strengthened by precipitation of ...
Chun-Hao Peng   +7 more
doaj   +1 more source

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