Results 141 to 150 of about 135,615 (350)

Markov processes and parabolic partial differential equations

open access: yes, 2010
In the first part of this article, we present the main tools and definitions of Markov processes' theory: transition semigroups, Feller processes, infinitesimal generator, Kolmogorov's backward and forward equations and Feller diffusion. We also give several classical examples including stochastic differential equations (SDEs) and backward SDEs (BSDEs).
Bossy, Mireille, Champagnat, Nicolas
openaire   +1 more source

Corn cob pyrolysis: A systematic literature review of methods and applications

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Mapping the research landscape of corn cob pyrolysis. Abstractas The agricultural sector is experiencing a surge in waste generation due to population growth, creating an urgent need to convert byproducts into value‐added products. Maize (Zea mays L.), a leading global crop, produces significant byproducts, such as corn cob, which are often undervalued.
Vilmar Steffen   +5 more
wiley   +1 more source

Degenerate two-phase incompressible flow problems III: Perturbation analysis and numerical experiments

open access: yesElectronic Journal of Differential Equations, 1999
This is the third paper of a three-part series where we develop and analyze a finite element approximation for a degenerate elliptic-parabolic partial differential system which describes the flow of two incompressible, immiscible fluids in porous media ...
Zhangxin Chen, Natalia L. Khlopina
doaj  

Predicting rare events using training data from stratified sampling designs, with application to human‐caused wildfire prediction

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Response‐based sampling is often used in modelling rare events from large, imbalanced data for efficiency. When modelling the event with logistic regression, the sampling design may be adjusted for using sampling weights or an offset. We propose a stratified sampling design for modelling rare events with large data which improves on previous ...
Johanna de Haan‐Ward   +2 more
wiley   +1 more source

Existence and regularity of a global attractor for doubly nonlinear parabolic equations

open access: yesElectronic Journal of Differential Equations, 2002
In this paper we consider a doubly nonlinear parabolic partial differential equation $$ frac{partial eta (u)}{partial t}-Delta _{p}u+f(x,t,u)=0 quad hbox{in }Omega imesmathbb{R}^{+}, $$ with Dirichlet boundary condition and initial data given.
Abderrahmane El Hachimi, Hamid El Ouardi
doaj  

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve   +4 more
wiley   +1 more source

Broad‐Spectrum Diffusion Coefficient Measurements via Surface Plasmon Resonance: From Thermodynamics to Protein Conformational Disorders

open access: yesChemPhysChem, EarlyView.
Recent advancements in surface plasmon resonance protocols and simulations have enhanced the measurement and prediction of diffusion coefficients (D) for chemical species in microfluidic channels. These developments enable precise determination of D values for molecules ranging from a few angstroms to nanometric aggregates, facilitating detailed ...
Giuseppe Stefano Basile   +4 more
wiley   +1 more source

Physics‐Based Inverse Modeling of Battery Degradation with Bayesian Methods

open access: yesChemSusChem, EarlyView.
Active parameterization of physics‐based models is essential to drive battery science. However, due to the model's complexity, parameterization is an ill‐posed problem with uncertainties in models and data. In this article, Bayesian methods are applied to physical degradation models to show sample‐efficient parameterization with uncertainty ...
Micha C. J. Philipp   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy