Results 21 to 30 of about 450,140 (296)
Journal of Applied Sciences and Environmental Management, 2022 A semi – analytical study of a time dependent one – dimensional advection – dispersion equation (ADE) with Neumann homogenous boundary conditions for studying contaminants flow in a homogenous porous media is presented. The governing equation which is a
O.R. Jimoh, B.N. Shuaibu
doaj +1 more source
Axioms, 2023 This study contains a two-dimensional mathematical model of solute transport in a river with temporally and spatially dependent flow, explicitly focusing on pulse-type input point sources with a fractional approach.
Manan A. Maisuria +2 more
doaj +1 more source
Objective Bayesian Estimation for Tweedie Exponential Dispersion Process
Mathematics, 2021 An objective Bayesian method for the Tweedie Exponential Dispersion (TED) process model is proposed in this paper. The TED process is a generalized stochastic process, including some famous stochastic processes (e.g., Wiener, Gamma, and Inverse Gaussian ...
Weian Yan +3 more
semanticscholar +1 more source
Fractal and Fractional, 2023 The model of multiple trapping into energy-distributed states is a successful tool to describe the transport of nonequilibrium charge carriers in amorphous semiconductors.
Fadila Serdouk +2 more
doaj +1 more source
New exponential dispersion models for count data: the ABM and LM classes [PDF]
ESAIM: Probability and Statistics, 2021 In their fundamental paper on cubic variance functions (VFs), Letac and Mora (The Annals of Statistics, 1990) presented a systematic, rigorous and comprehensive study of natural exponential families (NEFs) on the real line, their characterization through their VFs and mean value parameterization.
Bar-Lev, Shaul K., Ridder, Ad
openaire +4 more sources
FDTD Modeling for Dispersive Media Using Matrix Exponential Method [PDF]
IEEE Microwave and Wireless Components Letters, 2009 This letter presents a finite-difference time-domain formulation to model electromagnetic wave propagation in dispersive media using matrix exponential method. The Maxwell's curl equations and the time domain relations between electric fields and auxiliary variables are formulated as a first order differential matrix system. The fundamental solution to
Heh, Ding Yu, Tan, Eng Leong
openaire +3 more sources
Frequency-Domain Q-Compensated Reverse Time Migration Using a Stabilization Scheme
Remote Sensing, 2022 Seismic attenuation occurs during seismic wave propagation in a viscous medium, which will result in a poor image of subsurface structures. The attenuation compensation by directly amplifying the extrapolated wavefields may suffer from numerical ...
Xiong Ma +4 more
doaj +1 more source
EJNMMI Research, 2023 Background Kinetic modelling of dynamic PET typically requires knowledge of the arterial radiotracer concentration (arterial input function, AIF). Its accurate determination is very difficult in mice.
Juela Cufe +6 more
doaj +1 more source
Surface gravity waves on randomly irregular floor and the telegrapher’s equation
AIP Advances, 2021 The simplest model for the evolution of the mean-value of a surface gravity wave propagating in a random bottom has been connected with the telegrapher’s equation.
Manuel O. Cáceres
doaj +1 more source
Linear Growth Curve Analysis Based on Exponential Dispersion Models
Journal of the Royal Statistical Society Series B: Statistical Methodology, 1996 SUMMARY The paper introduces a class of linear growth curve models based on combinations of exponential dispersion models. The models have three components, namely a latent Markov growth process with stationary and independent increments, a noise component and a component describing variation between subjects.
Jørgensen, B +2 more
openaire +5 more sources