Results 31 to 40 of about 166,747,771 (254)
Development of TanDEM-X DEM Calibration Concept [PDF]
, 2007 The TanDEM-X mission comprises two fully active synthetic aperture radar satellites operating in X-band. The primary goal of this mission is the derivation of a high-precision global Digital Elevation Model (DEM) according to HRTI level 3 quality.
J. Hueso Gonzalez +13 more
core +1 more source
Effectiveness of a Virtual Reality Head-Mounted Display System-based Developmental Eye Movement Test
Journal 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
EVALUATION OF AIRBORNE L- BAND MULTI-BASELINE POL-INSAR FOR DEM EXTRACTION BENEATH FOREST CANOPY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 DEM beneath forest canopy is difficult to extract with optical stereo pairs, InSAR and Pol-InSAR techniques. Tomographic SAR (TomoSAR) based on different penetration and view angles could reflect vertical structure and ground structure.
W. M. Li +4 more
doaj +1 more source
Modelling the spatial distribution of DEM Error [PDF]
, 2005 Assessment of a DEM’s quality is usually undertaken by deriving a measure of DEM accuracy – how close the DEM’s elevation values are to the true elevation.
Carlisle, Bruce
core +1 more source
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
openaire +2 more sources
TanDEM-X DEM Calibration: Correction of systematic DEM errors by block adjustment [PDF]
, 2009 This paper gives an overview of the DEM adjustment within the TanDEM-X mission. The DEM adjustment estimates residual, systematic height offsets and deformations of each single interferometric DEM acquisition.
Astrid Gruber +5 more
core +1 more source
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
openaire +2 more sources
Generalized Nonlinear Difference-in-Difference-in-Differences [PDF]
, 2019 Difference-in-difference-in-differences (DiDiD) allow for the correction of unmeasured con-founding and function as a robustness check for difference-in-differences (DiD) techniques.
Glynn, Adam N., Ichino, Nahomi
core +1 more source
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
doaj +1 more source
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
doaj +1 more source