Results 81 to 90 of about 8,863 (173)
Anomalous Transport in Dissolving Porous Media: Transitions Between Fickian and Non‐Fickian Regimes
Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.Abstract Mineral dissolution is a fundamental geologic process that alters pore structures, significantly impacting fluid flow and solute transport in porous media. Depending on the interplay between advection, diffusion, and reaction rates, mineral dissolution produces distinct dissolution patterns, such as wormholing and uniform dissolution.
Jingxuan Deng +3 more
wiley +1 more source
Abstract and Applied Analysis, 2013 We give the greatest values r1, r2 and the least values s1, s2 in (1/2, 1) such that the double inequalities C(r1a+(1-r1)b,r1b+(1-r1)a)
Zai-Yin He +4 more
doaj +1 more source
, 2009 Star formation, which drives the evolution of baryonic matter in the universe, occurs in the densest regions of the interstellar medium. As a result much of the emergent short wavelength radiation, UV to near IR, is absorbed by intervening dust and ...
Giovanelli, Riccardo +3 more
core
State of the Art of Low‐Frequency Acoustic Modulation: Intensity Enhancement and Directional Control
Advanced Science, Volume 12, Issue 27, July 17, 2025.High intensity low‐frequency sound sources hold significant value in many fields. However, their long wavelength, strong penetrability, and tendency to diffract make direction control and intensity enhancement challenging. Acoustic generators and metamaterial‐based acoustic devices still face issues such as low energy efficiency, poor directional ...
Jingsong Xu +13 more
wiley +1 more source
The Excess Radio Background and Fast Radio Transients
, 2015 In the last few years ARCADE 2, combined with older experiments, has detected an additional radio background, measured as a temperature and ranging in frequency from 22 MHz to 10 GHz, not accounted for by known radio sources and the cosmic microwave ...
Kehayias, John +2 more
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Sharp Inequalities between Harmonic, Seiffert, Quadratic and Contraharmonic Means
, 2012 11 ...
Wang, Gen-Di +2 more
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An empirical evaluation of imbalanced data strategies from a practitioner's point of view
, 2018 This research tested the following well known strategies to deal with binary imbalanced data on 82 different real life data sets (sampled to imbalance rates of 5%, 3%, 1%, and 0.1%): class weight, SMOTE, Underbagging, and a baseline (just the base ...
Franceschinell, Rodrigo A. +1 more
core
Optimal two parameter bounds for the Seiffert mean
, 2012 In this note we obtain sharp bounds for the Seiffert mean in terms of a two parameter family of means. Our results generalize and extend the recent bounds presented in the Journal of Inequalities and Applications (2012) and Abstract and Applied Analysis (2012).
Chu, Yu-Ming +2 more
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Sharp bounds for Seiffert mean in terms of weighted power means of arithmetic mean and geometric mean [PDF]
Mathematical Inequalities & Applications, 2014 For a,b > 0 with a = b , let P = (a− b)/(4arctana/b−π) , A = (a+ b)/2 , G = √ ab denote the Seiffert mean, arithmetic mean, geometric mean of a and b , respectively. In this paper, we present new sharp bounds for Seiffert P in terms of weighted power means of arithmetic mean A and geometric mean G : ( 2 3 A p1 + 3 G p1 )1/p1 < P < ( 2 3 A p2 + 3 G p2 ...
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Seiffert means, asymptotic expansions and related inequalites
Rad Hrvatske akademije znanosti i umjetnosti. Matematičke znanosti, 2015 In this paper we study inequalities of the form (1 - μ) M1(s, t) + μ M3(s, t) ≤ M2(s, t) ≤ (1 - ν) M1(s, t) + ν M3(s, t), which cover some classical bivariate means and Seiffert means. Using techniques of asymptotic expansions detailed analysis was made and the method for obtaining optimal parameters μ and ν was described.
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