Results 71 to 80 of about 695,487 (206)

A semi-empirical approach to simulating the Dst index in global MHD models of Earth’s magnetosphere

Earth and Planetary Physics
The Dst index has been commonly used to measure the geomagnetic effectiveness of magnetic storm events for several decades. Based on Burton’s empirical Dst model and the global magneto-hydrodynamic (MHD) simulation of Earth’s magnetosphere, here we ...
JiaWen Yue, XiaoCheng Guo, YuXian Wang, Chi Wang   +3 more
doaj   +1 more source

A Micromechanical-Based Semi-Empirical Model for Predicting the Compressive Strength Degradation of Concrete under External Sulfate Attack. [PDF]

Materials (Basel), 2023
Li S, Yu X, Yang S, Wang H, Chen D.
europepmc   +1 more source

Semi-Empirical Molecular Orbital Methods and Ab Initio Calculations in Dye Chemistry: Computational Studies Towards the Design and Synthesis of Organic Pigments

, 2004
The main goal of this study was to determine the scope and limitations of some state-of-the-art methods in computational chemistry, including both molecular mechanics and semi-empirical and ab initio quantum mechanics, in the prediction of key properties
El-Shafei, Ahmed Mohamed
core  

A Semi-Empirical Model to Estimate Maximum Floc Size in a Turbulent Flow. [PDF]

Molecules, 2022
Bizi M.
europepmc   +1 more source

Semi-empirical modelling of stellar magnetic activity [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractSince Galileo, for four hundred years, dark spots have been observed systematically on the surface of the Sun. The monitoring of the sunspot number has shown that their number varies periodically every 11 years. This is the well-known solar activity cycle that is caused by the periodic changes of the magnetic field of the Sun. Not only do spots
openaire   +1 more source

Analysis of a semi-empirical leading-edge slat noise prediction model [PDF]

, 2020
In this paper semi-empirical formulas are presented that relate macroscopic flow parameters observed in the slat cove and semi-empirical constants proposed in Guo’s semianalytical model.
Venner, Cornelis H., Catalano, Fernando Martini, De Santana, Leandro Dantas, Botero Bolivar, Laura, Sanders, Martinus Petrus Johannes; id_orcid, Sanders, Martinus Petrus Johannes, De Santana, Leandro Dantas; id_orcid   +6 more
core  

Modeling of an Excavator System – Semi empirical hydraulic pump model [PDF]

, 2011
This paper describes the preliminary results of a study focused on the semi empirical modeling of an excavator's hydraulic pump. From the viewpoint of designing and tuning an efficient control system, the excavator is a very complex nonlinear plant ...
Alvin Anthony, CASOLI, Paolo, ANTHONY, ALVIN, Manuel Rigosi, Paolo Casoli, M. Rigosi   +5 more
core   +1 more source

Early-Cycle Lifetime Prediction of LFP Batteries Using a Semi-Empirical Model and Chaotic Musical-Chairs Optimization

Energies
Efficiently predicting the lifespan of lithium iron phosphate (LFP) batteries early in their operational life is critical to accelerating the development of energy storage systems while reducing testing time, cost, and resource consumption.
Zeyad A. Almutairi, Hady A. Bheyan, H. Al-Ansary, Ali M. Eltamaly   +3 more
doaj   +1 more source

Semi-Empirical Model of Remote-Sensing Reflectance for Chosen Areas of the Southern Baltic. [PDF]

Sensors (Basel), 2022
Lednicka B, Kubacka M.
europepmc   +1 more source

Research Progress on SAR Inversion of Crop and Soil Parameters Based on Microwave Scattering Theory

Leida xuebao
Crop and soil parameters serve as fundamental indicators for characterizing crop growth status and monitoring vegetation dynamics. Radar remote sensing presents unique advantages, such as all-weather and day-and-night observation capabilities, as well as
Shangrong WU, Rongkun ZHAO, Hong CAO, Yan ZHA, Qiangyi YU, Wenbin WU, Peng YANG   +6 more
doaj   +1 more source