Results 51 to 60 of about 9,970 (189)

Entropy in Hydrology

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract Although the concept of thermodynamic entropy due to Clausius dates back to the early 1850s, the mathematical theory of informational entropy was not developed until the pioneering work of Shannon in 1948, the development of principle of maximum entropy (POME) and theorem of concentration by Jaynes in 1957, principle of minimum cross entropy ...
Vijay P. Singh
wiley   +1 more source

Cosmology Due to Thermodynamics of Apparent Horizon

Annalen der Physik, Volume 537, Issue 11, November 2025.
Effective cosmological constant as a function of the Hubble rate H for different entropy parameters b. Figure shows the asymptotic of the effective cosmological constant. At H = 0 the effective cosmological constant vanishes. Abstract This study proposes new entropy of the apparent horizon Sh=(1/β)arctan(βSBH)$S_h=(1/\beta)\arctan (\beta S_{BH ...
S. I. Kruglov
wiley   +1 more source

Generalized entropies and corresponding holographic dark energy models

European Physical Journal C: Particles and Fields, 2020
Using Tsallis statistics and its relation with Boltzmann entropy, the Tsallis entropy content of black holes is achieved, a result in full agreement with a recent study (Mejrhit and Ennadifi in Phys Lett B 794:24, 2019). In addition, employing Kaniadakis
H. Moradpour, A. H. Ziaie, M. Kord Zangeneh   +2 more
doaj   +1 more source

Stability of Tsallis antropy and instabilities of Renyi and normalized Tsallis entropies: A basis for q-exponential distributions

, 2001
The q-exponential distributions, which are generalizations of the Zipf-Mandelbrot power-law distribution, are frequently encountered in complex systems at their stationary states.
A. K. Rajagopal, B. Lesche, C. Tsallis, P. T. Landsberg, S. Abe, S. Abe, S. Abe, S. Abe, Sumiyoshi Abe   +8 more
core   +3 more sources

Predicting Equilibrium Bed Morphology of Large‐Scale Meandering Rivers Using a Novel LES‐Trained Machine Learning Approach

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.
Abstract Flood‐induced deformation of the bed topography of fluvial meandering rivers could lead to riverbank displacement, infrastructure failure, and the propagation of scour and deposition features. The ability to predict sediment transport in large‐scale meanders is, therefore, a critical requirement for tackling a host of environmental issues ...
Zexia Zhang, Mehrshad Gholami Anjiraki, Hossein Seyedzadeh, Fotis Sotiropoulos, Xiaolei Yang, Ali Khosronejad   +5 more
wiley   +1 more source

Tsallis Entropy and Degeneracy

, 2023
For a Maxwell-Boltzmann situation, one may consider the number of permutations of N particles with n(ei) of them having energy ei i.e. N!/ Product over i n(ei)!. In such a case, n(ei)! removes the degeneracy of the identical n(ei) particles. In order to convert the degeneracies into a sum, one takes ln of the number of permutations. In such a case one
openaire   +1 more source

Searching for Universality of Turbulence in the Earth's Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Turbulence in space plasmas remains a fundamental challenge, and Earth's magnetosphere (MSP) offers a natural laboratory for its study. Using high‐resolution magnetic field data from the Magnetospheric Multiscale (MMS) mission, we extend a stochastic Markovian framework to analyze turbulence across 10 diverse magnetospheric regions, including ...
Dariusz Wójcik, Wiesław M. Macek
wiley   +1 more source

Parameterized coherence measure

Results in Physics, 2023
Quantifying coherence is an essential endeavor for both quantum mechanical foundations and quantum technologies. We present a bona fide measure of quantum coherence by utilizing the Tsallis relative operator (α,β)-entropy.
Meng-Li Guo, Zhi-Xiang Jin, Jin-Min Liang, Bo Li, Shao-Ming Fei   +4 more
doaj   +1 more source

Kumaraswamy Modified Kies Power Lomax Distribution: Properties, Actuarial Measures, and Applications

Engineering Reports, Volume 7, Issue 9, September 2025.
In this paper, we introduce a novel five‐parameter probability model integrating the features of the Kumaraswamy Modified Kies‐G family and the power Lomax distribution, offering improved flexibility in modeling real‐world data. The proposed model is named the Kumaraswamy Modified Kies power Lomax distribution, which captures a wide range of shapes ...
Potluri S. S. Swetha, Hanene Hamdani, Mohamed Nejib Ouertani, Vasili B. V. Nagarjuna, Suleman Nasiru, Mohammed Elgarhy   +5 more
wiley   +1 more source

Evaluating Different Methods for Determining the Velocity-Dip Position over the Entire Cross Section and at the Centerline of a Rectangular Open Channel

Entropy, 2020
The velocity profile of an open channel is an important research topic in the context of open channel hydraulics; in particular, the velocity-dip position has drawn the attention of hydraulic scientists.
Zhongfan Zhu, Pengfei Hei, Jie Dou, Dingzhi Peng   +3 more
doaj   +1 more source