Results 11 to 20 of about 94 (84)
Balancing Accuracy, Efficiency, and Flexibility in Radiation Calculations for Dynamical Models. [PDF]
J Adv Model Earth Syst, 2019 Abstract This paper describes the initial implementation of a new toolbox that seeks to balance accuracy, efficiency, and flexibility in radiation calculations for dynamical models. The toolbox consists of two related code bases: Radiative Transfer for Energetics (RTE), which computes fluxes given a radiative transfer problem defined in terms of ...
Pincus R, Mlawer EJ, Delamere JS.
europepmc +2 more sources
Mathematics, 2021 The fractional generalization of the Ambartsumian delay equation with Caputo’s fractional derivative is considered. The Ambartsumian delay equation is very difficult to be solved neither in the case of ordinary derivatives nor in the case of fractional ...
Weam Alharbi, Snezhana Hristova
doaj +1 more source
Accurate Solution for the Pantograph Delay Differential Equation via Laplace Transform
Mathematics, 2023 The Pantograph equation is a fundamental mathematical model in the field of delay differential equations. A special case of the Pantograph equation is well known as the Ambartsumian delay equation which has a particular application in Astrophysics.
Reem Alrebdi, Hind K. Al-Jeaid
doaj +1 more source
Journal of Geophysical Research: Biogeosciences, Volume 128, Issue 6, June 2023., 2023 Abstract To understand surface biogeophysical processes, accurately evaluating the geographical and temporal fluctuations of soil moisture is crucial. It is well known that the surface soil moisture content (SMC) affects soil reflectance at all solar spectrum wavelengths.
Nayma Binte Nur, Charles M. Bachmann
wiley +1 more source
Simulated Lunar Surface Hydration Measurements Using Multispectral Lidar at 3 µm
Earth and Space Science, Volume 9, Issue 8, August 2022., 2022 Abstract Accurately measuring the variability of spectroscopic signatures of hydration (H2O + OH) on the illuminated lunar surface at 3 μm as a function of latitude, lunar time of day, and composition is crucial to determining the generation and destruction mechanisms of OH species and understanding the global water cycle.
D. R. Cremons, C. I. Honniball
wiley +1 more source
Visible to Mid‐Infrared Optical Constants of Orthopyroxenes
Earth and Space Science, Volume 9, Issue 4, April 2022., 2022 Abstract Radiative transfer models of remotely acquired infrared spectra result in quantitative identification of minerals on planetary surfaces. Optical constants, or the real (n) and imaginary (k) indices of refraction are necessary inputs in such models.
Melinda J. Rucks +5 more
wiley +1 more source
International Journal of Analysis and Applications, 2022 In electric trains, the current is collected via a certain device, called the Pantograph. The governing mathematical model of such physical problem is well-known as the Pantograph delay differential equation (PDDE): y’(t)=ay(t)+by(ct), where c is a ...
S. M. Khaled
doaj +1 more source
A study of fractional order Ambartsumian equation involving exponential decay kernel
AIMS Mathematics, 2021 Récemment, les opérateurs fractionnaires non singuliers ont un rôle important dans la modélisation des problèmes du monde réel. Plus précisément, les opérateurs Caputo-Fabrizio sont utilisés pour étudier une meilleure dynamique des processus de mémoire.
Shabir Ahmad +3 more
openaire +3 more sources
Animal models of pulmonary hypertension: Getting to the heart of the problem
British Journal of Pharmacology, Volume 179, Issue 5, Page 811-837, March 2022., 2022 Despite recent therapeutic advances, pulmonary hypertension (PH) remains a fatal disease due to the development of right ventricular (RV) failure. At present, no treatments targeted at the right ventricle are available, and RV function is not widely considered in the preclinical assessment of new therapeutics.
Joshua P. Dignam +3 more
wiley +1 more source
Unmixing Mineral Abundance and Mg# With Radiative Transfer Theory: Modeling and Applications
Journal of Geophysical Research: Planets, Volume 126, Issue 2, February 2021., 2021 Abstract Mineral abundance and Mg# (100× molar Mg/(Mg + Fe)) are significant in understanding the crustal composition and thermal history of the Moon. In this study, we derive a new set of optical constants for olivine, orthopyroxene, and clinopyroxene using radiative transfer equations that include soil porosity and the opposition effect. Based on the
Lingzhi Sun, Paul G. Lucey
wiley +1 more source