Results 21 to 30 of about 35,022 (266)
Applied 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
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Implications of Different DEMs on Watershed Runoffs Estimations
Journal 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
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Parametrisation of a DEM model for railway ballast under different load cases [PDF]
Granular 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
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Simulation of a tablet coating process at different scales using DEM
European 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
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Remote 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
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The effect of grid size on the quantification of erosion, deposition, and rill network
International 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
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Improving the Accuracy of TanDEM-X Digital Elevation Model Using Least Squares Collocation Method
Remote Sensing, 2023 The TanDEM-X Digital Elevation Model (DEM) is limited by the radar side-view imaging mode, which still has gaps and anomalies that directly affect the application potential of the data. Many methods have been used to improve the accuracy of TanDEM-X DEM,
Xingdong Shen, Cui Zhou, Jianjun Zhu
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Comparison of different DEMs for hydrological studies in the mountainous areas
The Egyptian Journal of Remote Sensing and Space Science, 2021 The optical and radar satellite data based Global Digital Elevation Models (DEMs) serve as a main data source in hydrological studies today. Open access Remote Sensing (RS) products have increasing accuracy and improved spatial resolution. The main research purposes are to study the use of AW3D30, ASTER GDEM V003 and SRTMGL1 DEMs in modeling ...
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RELATIVE ERROR EVALUATION TO TYPICAL OPEN GLOBAL DEM DATASETS IN SHANXI PLATEAU OF CHINA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Produced by radar data or stereo remote sensing image pairs, global DEM datasets are one of the most important types for DEM data. Relative error relates to surface quality created by DEM data, so it relates to geomorphology and hydrologic applications ...
S. Zhao, S. Zhang, W. Cheng
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ANALYSIS AND COMPARISON OF SRTM3 DEM AND ASTER GDEM V2 [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Global Geographic Information Resources Construction and Maintenance Renewal Project is in urgent need of digital elevation model worldwide. At present, the errors of ASTER GDEMv2 and SRTM3 DEM data widely used are unevenly distributed.
J. Shen, W. L. Han, L. B. Zhang, J. Ge
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