Results 21 to 30 of about 3,721,565 (340)

DEFINITION OF CONTOUR LINES INTERPOLATION OPTIMAL METHODS FOR E-GOVERNMENT SOLUTIONS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Citizens expect high quality and rich e-Government solutions. Map based applications could be significantly improved by utilization of digital elevation models (DEMs).
A. Noskov, A. Zipf
doaj   +1 more source

Splitting ore from X-ray image based on improved robust concave-point algorithm [PDF]

open access: yesPeerJ Computer Science, 2023
Image segmentation is a key part of ore separation process based on X-ray images, and its segmentation result directly affects the accuracy of ore classification.
Lanhao Wang   +3 more
doaj   +2 more sources

Comparative accuracy assessment of global DTM and DTM generated from Soviet topographic maps for the purposes of road planning

open access: yesGeodesy and Cartography, 2017
This article analyses the accuracy of global DTM comparatively to the Soviet topographic maps. The main aim of this study is to estimate the possibility of utilising global DTM for the purposes of road planning. In order to reach this aim, three separate
Taras Hutsul, Yaroslav Smirnov
doaj   +1 more source

Evaluation of Physiological Response and Yield Function to Bio-fertilizer and Potassium Consumption in Melon (Cucumis Melo L.) Under Water Deficit Conditions. [PDF]

open access: yesDesert
Tarbat-e Jam is one of the major areas of melon production. Recent droughts and shortage of water have reduced melon yield. In this research, the role of nitroxin bio-fertilizer and potassium on mitigating the adverse effects of drought stress on melon ...
Hossein Nastari Nasrabadi   +1 more
doaj   +1 more source

DIGITAL ELEVATION MODEL INTERPOLATION BY FUSION OF MORPHOLOGICAL RECONSTRUCTION AND DISTANCE TRANSFORMATION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Interpolation methods have significant impacts on the accuracy of the digital elevation model (DEM) from contours which are one of frequently employed data sources.
J. Shen   +4 more
doaj   +1 more source

Association of complement C3 inhibitor pegcetacoplan with reduced photoreceptor degeneration beyond areas of geographic atrophy

open access: yesScientific Reports, 2022
Preservation of photoreceptors beyond areas of retinal pigment epithelium atrophy is a critical treatment goal in eyes with geographic atrophy (GA) to prevent vision loss.
Maximilian Pfau   +6 more
doaj   +1 more source

Transformation Optics Combined With Line-Integrals for Fast and Efficient Mode Matching Analysis of Waveguide Devices

open access: yesIEEE Journal of Microwaves, 2023
Mode matching method is here applied to waveguide fields calculated in a transformation optics framework. The proposed approach allows to obtain modes in terms of an expansion onto analytical basis functions for a waveguide of general cross-section ...
Gian Guido Gentili   +3 more
doaj   +1 more source

Characterisation of short-length scale residual stress variations within an electron beam welded P91 Ferritic–Martensitic steel plate

open access: yesHeliyon, 2021
In this research, an electron beam (EB) butt-welded P91 steel plate (~9 mm thick) is selected to measure longitudinal residual stresses (acting in the welding direction) using a promising residual stress measurement technique - the contour method. The EB
N. Naveed
doaj   +1 more source

Nitrogen and Phosphorous Loss as Affected by Plough Direction in Rainfed Wheat Land of a Semi- Arid Region

open access: yesعلوم آب و خاک, 2020
Sloping farmlands are the major sources of soil, water and nutrient losses in arid and semi-arid regions. Information about the impacts of different tillage practices on soil erosion, nutrient loss and crop nutrient uptake on the sloping farmland of semi-
L. Piri Moghadam, A. Vaezi
doaj  

Geometric feature enhanced line segment extraction from large-scale point clouds with hierarchical topological optimization

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
As the most common primitives, line segments play an essential role in the vectorized reconstruction of artificial scenes. In this paper, a geometric feature enhanced line extraction method with Hierarchical Topological Optimization is proposed to ...
Zongtian Hu   +6 more
doaj   +1 more source

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