Results 1 to 10 of about 150,341 (167)

SAR-SIFT: A SIFT-Like Algorithm for SAR Images [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2015
The scale-invariant feature transform (SIFT) algorithm and its many variants are widely used in computer vision and in remote sensing to match features between images or to localize and recognize objects. However, mostly because of speckle noise, it does not perform well on synthetic aperture radar (SAR) images.
Florence Tupin   +2 more
exaly   +3 more sources

Flood Mapping in the Coastal Region of Bangladesh Using Sentinel-1 SAR Images: A Case Study of Super Cyclone Amphan

open access: yesJournal of the Civil Engineering Forum, 2021
Floods are triggered by water overflow into drylands from several sources, including rivers, lakes, oceans, or heavy rainfall. Near real-time (NRT) flood mapping plays an important role in taking strategic measures to reduce flood damage after a flood ...
Pollen Chakma, Aysha Akter
doaj   +1 more source

KINITEC DESCRIPTION OF SODIUM BEHAVIOR IN SOME AFFECTED AND NON-AFFECTED SOILS BY SALTS [PDF]

open access: yesMesopotamia Journal of Agriculture, 2019
This study included different soil locations around Mosul city representing non salt affected soils, and around Basrah city representing salt – affected soil.
Hazim M. Ahmed, Einas Y. Yousif
doaj   +1 more source

SARS and masks [PDF]

open access: yesJournal of Hospital Infection, 2004
Since its emergence in the first months of 2003, the epidemic of severe acute respiratory syndrome (SARS) has been characterized by rapid spread among healthcare workers (HCWs). Uncertainty about the route of transmission of the virus suggests the use of respirators that can protect HCWs against both droplet nuclei and droplet transmission, rather than
Puro Vincenzo   +2 more
openaire   +2 more sources

Use of SAR and Optical Time Series for Tropical Forest Disturbance Mapping

open access: yesRemote Sensing, 2020
Frequent cloud cover and fast regrowth often hamper topical forest disturbance monitoring with optical data. This study aims at overcoming these limitations by combining dense time series of optical (Sentinel-2 and Landsat 8) and SAR data (Sentinel-1 ...
Manuela Hirschmugl   +5 more
doaj   +1 more source

An era of Sentinels in flood management: Potential of Sentinel-1, -2, and -3 satellites for effective flood management

open access: yesOpen Geosciences, 2021
The repetitive and destructive nature of floods across the globe causes significant economic damage, loss of human lives, and leaves the people living in flood-prone areas with fear and insecurity.
Kuntla Sai Kiran
doaj   +1 more source

SARS: epidemiology [PDF]

open access: yesRespirology, 2003
Severe acute respiratory syndrome (SARS) originated in Southern China in November 2002, and was brought to Hong Kong in February 2003. From Hong Kong, the disease spread rapidly worldwide but mostly to Asian countries. At the end of the epidemic in June, the global cumulative total was 8422 cases with 916 deaths (case fatality rate of 11%).
Moira, Chan-Yeung, Rui-Heng, Xu
openaire   +2 more sources

Morphological and Statistical Filter-Based Multi-Direction Building Detection for SAR Images [PDF]

open access: yesJournal of Applied Research in Electrical Engineering, 2023
SAR images are used in many applications such as building detection. Extracting the building is very challenging due to the radar nature of the SAR images.
Fateme Amjadipour   +2 more
doaj   +1 more source

The Impact of the SARS Epidemic on the Utilization of Medical Services: SARS and the Fear of SARS

open access: yesAmerican Journal of Public Health, 2004
Using interrupted time-series analysis and National Health Insurance data between January 2000 and August 2003, this study assessed the impacts of the severe acute respiratory syndrome (SARS) epidemic on medical service utilization in Taiwan. At the peak of the SARS epidemic, significant reductions in ambulatory care (23.9%), inpatient care (35.2 ...
Hong-Jen, Chang   +5 more
openaire   +3 more sources

Evaluation and comparison of conjunctival swab polymerase chain reaction results in SARS-CoV-2 patients with and without ocular manifestations

open access: yesIndian Journal of Ophthalmology, 2021
Purpose: The aim of this study was to evaluate and compare the presence of SARS-CoV-2 in tears of patients with and without ocular symptoms in SARS-CoV-2 positive patients. Methods: The prospective observational study conducted on 60 consecutive SARS-CoV-
Prempal Kaur   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy