Results 41 to 50 of about 10,792 (301)

Asymptotic behaviour of non-isotropic random walks with heavy tails

Modern Stochastics: Theory and Applications, 2017
A random flight on a plane with non-isotropic displacements at the moments of direction changes is considered. In the case of exponentially distributed flight lengths a Gaussian limit theorem is proved for the position of a particle in the scheme of ...
Mark Kelbert, Enzo Orsingher
doaj   +1 more source

Lévy Flights Diffusion with Drift in Heterogeneous Membranes

Membranes, 2023
The modelling of diffusion in membranes is essential to understanding transport processes through membranes, especially when it comes to improving process efficiency. The purpose of this study is to understand the relationship between membrane structures,
Anna Strzelewicz, Monika Krasowska, Michał Cieśla   +2 more
doaj   +1 more source

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +1 more source

Solution of the problem of gradient thermoelasticity for a coated strip

Учёные записки Казанского университета: Серия Физико-математические науки, 2021
The formulation of a one-parameter problem of gradient thermoelasticity for the “thermal protective coating – substrate” system which is modeled by a composite strip is presented.
A.O. Vatulyan, S.A. Nesterov
doaj   +1 more source

Compression‐Tension‐Asymmetry and Stiffness Nonlinearity of Collagen‐Matrigel Composite Hydrogels

Advanced Healthcare Materials, EarlyView.
Self‐assembled collagen hydrogel matrices are widely used in tissue engineering applications. These matrices stiffen and contract laterally under tension due to fiber alignment and soften and collapse under compression due to fiber buckling. It is demonstrated that filler materials, such as Matrigel, linearize the mechanical behavior of collagen ...
David Böhringer, Jan Hinrichsen, Radik Gataulin, Sandra Wiedenmann, Marina Spörrer, Selda Sherifova, Paul Steinmann, Gerhard A. Holzapfel, Ben Fabry, Silvia Budday   +9 more
wiley   +1 more source

Nonlocal Conduction in a Metawire

Advanced Materials, Volume 37, Issue 13, April 2, 2025.
A 1D metawire composed of twisted copper wires is designed and realized. This metamaterial exhibits pronounced effects of nonlocal electric conduction according to Ohm's law. The current at one location not only depends on the electric field at that location but also on other locations.
Julio Andrés Iglesias Martínez, Yi Chen, Ke Wang, Martin Wegener   +3 more
wiley   +1 more source

On moment convergence of sample quantiles with application to parameter estimations for Cauchy distribution

AIMS Mathematics
Under a general condition on continuous probability distributions of some populations, this study establishes that the distributional convergence of sample quantiles implies moment convergence.
Yuankang Wang
doaj   +1 more source

A Modified BRDF Model Based on Cauchy-Lorentz Distribution Theory for Metal and Coating Materials

Photonics, 2023
This paper presents a modified Bidirectional Reflectance Distribution Function (BRDF) model based on the Cauchy–Lorentz distribution that accurately characterizes the reflected energy distribution of typical materials, such as metals and coatings in ...
Fengqi Guo, Jingping Zhu, Liqing Huang, Haoxiang Li, Jinxin Deng, Xiangzhe Zhang, Kai Wang, Hong Liu, Xun Hou   +8 more
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

On the Skew-Normal-Cauchy Distribution

Communications in Statistics - Theory and Methods, 2010
In this article, we study further properties of a skew normal distribution, called the skew-normal-Cauchy (SNC) distribution by Nadarajah and Kotz (2003). A stochastic representation is obtained which allows alternative derivations for moments, moments generating function, and skewness and kurtosis coefficients.
Arrue, Jaime, Gomez, Hector W., Varela, Hector, Bolfarine, Heleno   +3 more
openaire   +5 more sources