Results 31 to 40 of about 995,592 (330)

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

Thermal Effect Estimation of Smartphone Virtual Reality Headsets on Human Eye by Finite Element Method

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
Smartphones (SP) terminals are becoming the most popular media for virtual reality (VR) and augmented reality (AR) effects with their central processing unit (CPU) and video capabilities. Simple VR headsets with reasonable costs can host smartphones, and
Niyazi Uluaydın, Selim Şeker
doaj   +1 more source

Prediction of SAR and TDS parameters using LSTM- RNN model: A case study on Aran station, Iran [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2021
Surface water quality is of particular importance due to its drinking, industrial, and agricultural water sources. Changes in rainfall, temperature and river discharge can affect surface water quality.
Maryam Hafezparast Mavadat   +1 more
doaj   +1 more source

Severe acute respiratory syndrome: ‘SARS’ or ‘not SARS’ [PDF]

open access: yesJournal of Paediatrics and Child Health, 2004
Abstract:  Accurate clinical diagnosis of severe acute respiratory syndrome (SARS) based on the current World Health Organization definition is difficult and at times impossible at the early stage of the disease. Both false positive and false negative cases are commonly encountered and this could have far‐reaching detrimental effects on the patients ...
Albert M. Li   +7 more
openaire   +3 more sources

Faz hatalı SAR verileri için karesel olmayan düzenlileştirmeye dayalı bir görüntü oluşturma tekniği (A nonquadratic regularization based image reconstruction technique for SAR data with phase errors) [PDF]

open access: yes, 2009
Sentetik Açıklıklı Radar (SAR) görüntülemesinde karşılaşılan önemli problemlerden biri faz hatalarıdır. Faz hataları, SAR’ın bulunduğu platformla hedef arasındaki uzaklığın tam olarak ölçülememesi ya da gönderilen işaretlerin atmosferdeki türbülansa ...
Cetin, Mujdat   +3 more
core   +1 more source

Mesoscale structures viewed by SAR and AVHRR near the Canary islands

open access: yesScientia Marina, 2001
Comparison of Synthetic Aperture Radar and Advanced Very High Resolution Radiometry images of sea surface backscatter and temperature during the peak of the summer Trade winds reveals many aspects of the regional oceanography of the Canary Islands.
E. D. Barton   +3 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 ...
Chi-Jeng Hsieh   +5 more
openaire   +3 more sources

Sparse representation-based synthetic aperture radar imaging [PDF]

open access: yes, 2011
There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying ...
Cetin, Mujdat   +3 more
core   +1 more source

Archeological crop marks identified from Cosmo-SkyMed time series: the case of Han-Wei capital city, Luoyang, China

open access: yesInternational Journal of Digital Earth, 2017
The development of spaceborne Synthetic Aperture Radar (SAR) technology declares that the golden era of SAR remote sensing in archeology is approaching; however, nowadays its methodology framework is still lacking due to the inadequate case studies ...
Aihui Jiang   +10 more
doaj   +1 more source

Offshore Metallic Platforms Observation Using Dual-Polarimetric TS-X/TD-X Satellite Imagery: A Case Study in the Gulf of Mexico [PDF]

open access: yes, 2017
Satellite-based synthetic aperture radar (SAR) has been proven to be an effective tool for ship monitoring. Offshore platforms monitoring is a key topic for both safety and security of the maritime domain.
Marino, Armando   +2 more
core   +3 more sources

Home - About - Disclaimer - Privacy