Results 31 to 40 of about 63,343 (262)

Zero Entropy Is Generic [PDF]

Entropy, 2016
Dan Rudolph showed that for an amenable group, Γ, the generic measure-preserving action of Γ on a Lebesgue space has zero entropy. Here, this is extended to nonamenable groups. In fact, the proof shows that every action is a factor of a zero entropy action!
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Generalized gravitational entropy [PDF]

Journal of High Energy Physics, 2013
26+7 pages, 8 figures.
Lewkowycz, Aitor, Maldacena, Juan
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On Generalized Schürmann Entropy Estimators

Entropy, 2022
We present a new class of estimators of Shannon entropy for severely undersampled discrete distributions. It is based on a generalization of an estimator proposed by T. Schürmann, which itself is a generalization of an estimator proposed by myself.For a special set of parameters, they are completely free of bias and have a finite variance, something ...
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Progress in the Prediction of Entropy Generation in Turbulent Reacting Flows Using Large Eddy Simulation

Entropy, 2014
An overview is presented of the recent developments in the application of large eddy simulation (LES) for prediction and analysis of local entropy generation in turbulent reacting flows.
Mehdi Safari, Fatemeh Hadi, M. Reza H. Sheikhi   +2 more
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Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

Entropy, 2015
In this study, convection flow in microchannel heat sink with offset fan-shaped reentrant cavities in sidewall filled with Fe3O4-water is numerically investigated.
Mohammad Nasiri, Mohammad Mehdi Rashidi, Giulio Lorenzini   +2 more
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Entropy generation analysis and simulation of turbulent forced convection around tube with integral wake splitter using artificial neural network approach

Alexandria Engineering Journal, 2023
This paper deals with the investigations on entropy generation around a circular plain tube with integral downstream splitter plates with cross flow of air in a rectangular duct.
Moustafa A. El Bouz, Aly M.A. Ibrahim, Mohamed M. Abdelsalam, Emad M.S. El-Said   +3 more
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Generalized $$\alpha $$-observational entropy

Quantum Information Processing
Comment: 13 pages: Accepted for Publication in Quantum Information ...
Sinha, Shivam, Majumdar, Nripendra, Aravinda, S.   +2 more
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Holographic Rényi entropy and generalized entropy method

Nuclear Physics B, 2014
In this paper we use the method of generalized gravitational entropy in \cite{Lewkowycz:2013nqa} to construct the dual bulk geometry for a spherical entangling surface, and calculate the R nyi entropy with the dual bulk gravity theory being either Einstein gravity or Lovelock gravity, this approach is closely related to that in \cite{Casini:2011kv ...
Guo, Wu-zhong, Li, Miao
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Simulation of Entropy Generation under Stall Conditions in a Centrifugal Fan

Entropy, 2014
Rotating stalls are generally the first instability met in turbomachinery, before surges. This 3D phenomenon is characterized by one or more stalled flow cells which rotate at a fraction of the impeller speed. The goal of the present work is to shed some
Lei Zhang, Jinhua Lang, Kuan Jiang, Songling Wang   +3 more
doaj   +1 more source

Generalized Entropy Generation Expressions in Gases [PDF]

Entropy, 2019
In this study, we generalize our previous methods for obtaining entropy generation in gases without the need to carry through a specific expansion method, such as the Chapman–Enskog method. The generalization, which is based on a scaling analysis, allows for the study of entropy generation in gases for any arbitrary state of the gas and consistently ...
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