Results 21 to 30 of about 17,023 (259)

A new Greenland digital elevation model derived from ICESat-2 during 2018–2019 [PDF]

open access: yesEarth System Science Data, 2022
Greenland digital elevation models (DEMs) are indispensable to fieldwork, ice velocity calculations, and mass change estimations. Previous DEMs have provided reasonable estimations for all of Greenland, but the time span of applied source data may lead ...
Y. Fan   +8 more
doaj   +1 more source

Implications of Different DEMs on Watershed Runoffs Estimations

open access: yesJournal of Water Resource and Protection, 2019
Watershed modelling tools like ArcSWAT, an ArcGIS extension of Soil and Water Assessment tool (SWAT), are useful to watershed managers in many ways. One particular use is analyzing model outputs for decision making related to waterway restoration and mitigation, which is often undertaken to improve water quality in streams.
Nazia N. Arbab   +3 more
openaire   +2 more sources

Effects of DEM source and resolution on the HEC-HMS hydrological simulation

open access: yesShui kexue jinzhan, 2015
Hydrological simulations are affected by the parameters derived from DEM,which describes the watershed features. Xitiaoxi River basin was selected to simulate two runoff processes in Jun and Aug to Sep 2011 using the HEC-HMS model with ASTER 30 m DEM ...
GAO Yufang   +3 more
doaj   +1 more source

Effectiveness of a Virtual Reality Head-Mounted Display System-based Developmental Eye Movement Test

open access: yesJournal of Eye Movement Research, 2016
By transplanting the Developmental Eye Movement (DEM) test chart to a virtual reality head-mounted display (VR HMD) system, this study sought to evaluate the effectiveness of the DEM test for measuring dynamic visual acuity. Thirty-nine adults aged 20–39
Jung-Ho Kim   +5 more
doaj   +1 more source

Configurational Entropy for Optimizing the Encryption of Digital Elevation Model Based on Chaos System and Linear Prediction

open access: yesApplied Sciences, 2021
A digital elevation model (DEM) digitally records information about terrain variations and has found many applications in different fields of geosciences. To protect such digital information, encryption is one technique.
Xinghua Cheng, Zhilin Li
doaj   +1 more source

Parametrisation of a DEM model for railway ballast under different load cases [PDF]

open access: yesGranular Matter, 2017
The prediction quality of discrete element method (DEM) models for railway ballast can be expected to depend on three points: the geometry representation of the single particles, the used contact models and the parametrisation using principal experiments. This works aims at a balanced approach, where none of the points is addressed with excessive depth.
Bettina Suhr, Klaus Six
openaire   +2 more sources

Investigating the Impact of Digital Elevation Models on Sentinel-1 Backscatter and Coherence Observations

open access: yesRemote Sensing, 2020
Spaceborne remote sensing can track ecosystems changes thanks to continuous and systematic coverage at short revisit intervals. Active remote sensing from synthetic aperture radar (SAR) sensors allows day and night imaging as they are not affected by ...
Ignacio Borlaf-Mena   +4 more
doaj   +1 more source

Simulation of a tablet coating process at different scales using DEM

open access: yesEuropean Journal of Pharmaceutical Sciences, 2016
Spray coating of tablets is an important unit operation in the pharmaceutical industry and is mainly used for modified release, enteric protection, better appearance and brand recognition. It can also be used to apply an additional active pharmaceutical ingredient to the tablet core. Scale-up of such a process is an important step in commercialization.
P, Boehling   +8 more
openaire   +2 more sources

An Interactive Model of the Democratic Peace: Revisiting the Theory with Elastic Measures [PDF]

open access: yes, 2018
Democracies do not take up arms against each other. This axiom has attained the status of a mantra in the field of international relations. As previous research has shown, however, the truth of this statement is highly contingent on the definitions of ...
Francisco Urdinez   +5 more
core   +1 more source

The effect of grid size on the quantification of erosion, deposition, and rill network

open access: yesInternational Soil and Water Conservation Research, 2017
Hillslope rill/interrill erosion has been investigated from the perspective of runoff transport of sediment. Recent advances in terrestrial laser scanning can provide high-resolution elevation data up to centimeter levels, and temporal digital elevation ...
Xiaoyu Lu   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy