Results 141 to 150 of about 77,815 (315)
Two dimensional weak localization beyond the diffusion approximation
, 1994 The standard theory of weak localization is based on a diffusion approximation. It produces quantitatively accurate results only when the phase breaking length $L_{\phi}$ and the magnetic length $L_H$ are very large compased with the mean free path $\ell$
B. Shapiro, A. Cassam-Chenai
core +1 more source
Modeling of diffuse reflectance for a two layered medium: A Monte-Carlo study
Results in OpticsA simple exponential model of diffuse reflectance for a two-layered medium was developed theoretically based on Monte Carlo simulation. Absorption and reduced scattering coefficients of these two layers were chosen to be different in which scattering ...
Ali Shahin
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe +4 more
wiley +1 more source
A multiflow approximation to diffusions
Stochastic Processes and their Applications, 1991 The author introduces a new form of approximation to diffusions represented as solutions of stochastic differential equations. In the various forms of approximations, one solves a sequence of ordinary differential equations which are derived by substituting, in place of Brownian path, a piecewise differentiable approximation corresponding to a given ...
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira +4 more
wiley +1 more source
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer +3 more
wiley +1 more source
Diffusion Approximation of a Poisson Model for Cumulative Excess Returns
The paper analyzes the regressive equation for cumulative excess returns with residual conditional variances as a GARCH(1,1) process and statistical uncertainty as an AR(1) Gaussian process with correlation parameter ρ.
Pola, Aija +2 more
core
The spindle approximation of network epidemiological modeling
New Journal of PhysicsUnderstanding the dynamics of spreading and diffusion on networks is of critical importance for a variety of processes in real life. However, predicting the temporal evolution of diffusion on networks remains challenging as the process is shaped by ...
Jianhong Mou +6 more
doaj +1 more source
Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies
Advanced Engineering Materials, EarlyView.Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo +3 more
wiley +1 more source