The patterns and origins of dune form and colour using satellite imagery from Qassim province, Saudi Arabia

2012 ◽  
Vol 279-280 ◽  
pp. 319
Author(s):  
Sue McLaren
Keyword(s):  
Saudi Arabia ◽  
Satellite Imagery ◽  
Dune Form

scholarly journals Satellite imagery to select a sample of rooftops for a PV installation project in Jeddah, Saudi Arabia

2021 ◽  
Vol 2042 (1) ◽  
pp. 012014
Author(s):  
Luke S. Blunden ◽  
Mostafa Y.M. Mahdy ◽  
Abdulsalam S. Alghamdi ◽  
AbuBakr S Bahaj
Keyword(s):  
Neural Network ◽  
Saudi Arabia ◽  
Satellite Imagery ◽  
Small Sample ◽  
Small Scale ◽  
Solar Photovoltaic ◽  
Segmentation Approach ◽  
Stratified Sample ◽  
Roof Area ◽  
The City

Abstract A region-based convolutional neural network image segmentation approach (Mask R-CNN) was applied to identification of flat rooftops from satellite imagery in the city of Jeddah in Saudi Arabia. The model was trained on a small sample of rooftops (202) digitized from a 0.5 m resolution image (covering 0.21 km2) and then was applied to an independent area 4.5 km away. The precision and recall of the model were 0.98 and 0.96 respectively in terms of identifying rooftops in the independent area. A spatially stratified sample of rooftops was drawn from those identified by the model and the median roof area of the sample was not significantly different from the area as a whole. The results, although at a small scale, demonstrate the effectiveness of this approach for selecting buildings with appropriate rooftops for solar photovoltaic (PV) installation, in the context of closely spaced flat-roofed buildings, without requiring cadastral mapping or LIDAR datasets.

Confidence toward vaccination as reported by parents of children admitted to a tertiary care hospital in Riyadh, Saudi Arabia: A cross sectional study

Vacunas ◽  
2020 ◽  
Vol 21 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Y.M. AlGoraini ◽  
N.N. AlDujayn ◽  
M.A. AlRasheed ◽  
Y.E. Bashawri ◽  
S.S. Alsubaie ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Care Hospital ◽  
Sectional Study ◽  
Cross Sectional

Abstract #955: Sheehan Syndrome in a Jizan Region of Saudi Arabia.

2016 ◽  
Vol 22 ◽  
pp. 224
Author(s):  
Subodh Banzal ◽  
Sonal Banzal ◽  
Sadhana Banzal ◽  
Ayobenji Ayoola
Keyword(s):  
Saudi Arabia ◽  
Sheehan Syndrome
Sign in / Sign up

Export Citation Format

Share Document