Results 21 to 30 of about 1,037,044 (293)

Soil moisture retrieval model by using RISAT-1, C-band data in tropical dry and sub-humid zone of Bankura district of India

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2015
Soils play a key role in various hydrological and meteorological applications. The objective of this paper is to analyze the spatial variability of very high resolution (3.3 m) RISAT-1 (5.35 GHz) data with surface soil parameters to produce soil moisture
Kousik Das, Prabir Kumar Paul
doaj   +1 more source

Semi-empirical model of the spatiotemporal surface temperature distribution on the plain part of Ukraine

open access: yesГеофизический журнал, 2023
The spatial variation of temperature is found to depend linearly on climate continentality, morphology of the relief, the position of the site with respect to seas, in addition to the usual elevation, latitude and longitude predictors.
S. Boychenko, N. Maidanovych
doaj   +1 more source

A Brief Analysis of Radio Propagation Models for Long Term Evolution

open access: yesDianxin kexue, 2013
The accurate network planning and optimization was based on good radio propagation model for the particular wireless environment and specific frequency.Several types of LTE-based propagation models were reviewed under the three kinds of propagation model
Mingfeng Zhao
doaj   +2 more sources

A Semi-Empirical Model of the Infra-Red Universe

open access: yes, 1999
We present a simple model of the infra-red universe, based as much as possible on local observations. We model the luminosity and number evolution of disk and starburst galaxies, including the effects of dust, gas and spectral evolution. Although simple,
Altieri B.   +20 more
core   +1 more source

Data-Driven Semi-Empirical Model Approximation Method for Capacity Degradation of Retired Lithium-Ion Battery Considering SOC Range

open access: yesApplied Sciences, 2023
The rapid development of the electric vehicle industry produces large amounts of retired power lithium-ion batteries, thus resulting in the echelon utilization technology of such retired batteries becoming a research hotspot in the field of renewable ...
Wanwan Xu   +6 more
doaj   +1 more source

A Statistical Semi-Empirical Model: Satellite galaxies in Groups and Clusters

open access: yes, 2018
We present STEEL a STatistical sEmi-Empirical modeL designed to probe the distribution of satellite galaxies in groups and clusters. Our fast statistical methodology relies on tracing the abundances of central and satellite haloes via their mass ...
Bernardi, M.   +3 more
core   +1 more source

Semi-Empirical Soil Organic Matter Retrieval Model With Spectral Reflectance

open access: yesIEEE Access, 2019
Rapid and accurate monitoring of soil organic matter (SOM) content is of great significance for precision fertilization of farmland. However, the SOM retrieval models are mainly established by statistical methods, which have limited application scope and
Jing Yuan   +8 more
doaj   +1 more source

Evaluation of Machinery Readiness Using Semi-Markov Processes

open access: yesApplied Sciences, 2020
This article uses Markov and semi-Markov models as some of the most popular tools to estimate readiness and reliability. They allow to evaluate of both individual elements as well as entire systems—including production systems—as multi-state ...
Andrzej Świderski   +3 more
doaj   +1 more source

Nuclear Transparency to Intermediate-Energy Protons [PDF]

open access: yes, 1996
Nuclear transparency in the (e,e'p) reaction for 135 < Tp < 800 MeV is investigated using the distorted wave approximation. Calculations using density-dependent effective interactions are compared with phenomenological optical potentials.
A. A. Cowley   +89 more
core   +2 more sources

Radio fiber bursts and fast magnetoacoustic wave trains

open access: yes, 2012
We present a model for dm-fiber bursts that is based on assuming fast sausage magnetoacoustic wave trains that propagate along a dense vertical filament or current sheet.
Jelínek, P.   +2 more
core   +1 more source

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