Results 51 to 60 of about 2,909,274 (264)

The potential of global solar radiation in the Silesia region as a renewable source of energy

open access: yesEnvironmental & Socio-economic Studies, 2016
Historically, Silesia has been at the centre of the Polish coal industry for many years and thus has experienced poorer air quality compared to other voivodeships.
Waniek Katarzyna
doaj   +1 more source

Geomorphological hazard analysis using dem along the Eastern coast between Marsa Alam and Ras Gharib, Egypt. [PDF]

open access: bronze, 2022
Mohamed Mahmoud Shaaban Mabrouk   +2 more
openalex   +1 more source

3‐D impulse‐based level‐set method for granular flow modeling

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 125, Issue 17, 15 September 2024.
Abstract We explore the viability of modeling dynamic problems with a new formulation of an impulse‐based Level‐Set DEM (LS‐DEM). The new formulation is stable, fast, and energy conservative. However, it can be numerically stiff when the assembly has substantial mass differences between particles.
Peng Tan   +2 more
wiley   +1 more source

DEM-based analysis of morphometric features in humid and hyper-arid environments using artificial neural network [PDF]

open access: yesDesert, 2009
This paper presents a robust approach using artificial neural networks in the form of a Self Organizing Map (SOM) as a semi-automatic method for analysis and identification of morphometric features in two completely different environments, the Man and ...
A.H Ehsani, F. Quiel
doaj   +1 more source

A discretization‐convergent level‐set‐discrete‐element‐method using a continuum‐based contact formulation

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 125, Issue 5, 15 March 2024.
Abstract The level‐set‐discrete‐element‐method (LS‐DEM) was developed to overcome the shape limitation of traditional discrete element method. LS‐DEM's shape generality relies on a node‐based surface discretization of grain boundary, and it has been used to shed new light of a variety of granular mechanics applications with realistically shaped grains ...
Shai Feldfogel   +3 more
wiley   +1 more source

Test and DEM study on the influence of particle morphology on the shear characteristics of the reinforcement–soil Interface

open access: yes工程科学学报
The interaction at the geosynthetic–reinforced soil interface is a key factor in determining the stability of reinforced soil structures, with soil particle morphology significantly influencing this interaction.
Jingting LI   +3 more
doaj   +1 more source

The Influence of Heterogeneity on Lunar Irradiance Based on Multiscale Analysis

open access: yesRemote Sensing, 2019
The Moon is a stable light source for the radiometric calibration of satellite sensors. It acts as a diffuse panel that reflects sunlight in all directions, however, the lunar surface is heterogeneous due to its topography and different mineral content ...
Xiangzhao Zeng, Chuanrong Li
doaj   +1 more source

On the friction dependency of the stress Lode angle

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 48, Issue 4, Page 1001-1017, March 2024.
Abstract The shape of the failure locus of a material is significant for its strength predictions. Even when constitutive models include the same critical stress surface, different critical stress ratios can be predicted for an identical applied isochoric strain path. In this article, we investigate critical stress predictions of different constitutive
Gertraud Medicus   +3 more
wiley   +1 more source

Comparing RUSLE LS Calculation Methods Across Varying DEM Resolutions

open access: yesModern Geográfia
Soil erosion reduces land productivity and causes environmental degradation. Soil erosion models, such as the Revised Universal Soil Loss Equation (RUSLE), are used to estimate the severity and distribution of erosion.
Moody, Amanda, Hickey, Robert
doaj   +1 more source

Coherent Markov Random Field-Based Unreliable DSM Areas Segmentation and Hierarchical Adaptive Surface Fitting for InSAR DEM Reconstruction

open access: yesSensors, 2020
A digital elevation model (DEM) can be obtained by removing ground objects, such as buildings, in a digital surface model (DSM) generated by the interferometric synthetic aperture radar (InSAR) system. However, the imaging mechanism will cause unreliable
Qian Qian   +3 more
doaj   +1 more source

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