Results 1 to 10 of about 139,883 (361)

Integrated Space Situational Awareness Systems: SDA and SSA – Advantages and Limitations [PDF]

open access: diamondPolish Political Science Yearbook, 2021
SDA (Space Domain Awareness) and SSA (Space Situational Awareness – SSA) have been defined as comprehensive knowledge of space objects and the ability to track, understand, and predict their future location.
Małgorzata Polkowska
doaj   +2 more sources

Auto-SDA

open access: yesProceedings of the 3rd ACM Workshop on Hot Topics in Video Analytics and Intelligent Edges, 2021
Social distancing can reduce infection rates in respiratory pandemics such as COVID-19, especially in dense urban areas. To assess pedestrians' compliance with social distancing policies, we use the pilot site of the PAWR COSMOS wireless edge-cloud testbed in New York City to design and evaluate an Automated video-based Social Distancing Analyzer (Auto-
Mahshid Ghasemi   +3 more
openaire   +2 more sources

Scale of Death Anxiety (SDA): Development and Validation [PDF]

open access: goldFrontiers in Psychology, 2017
This study developed and validated a new measure to assess the death anxiety (i.e., Scale of Death Anxiety, SDA) on an individual’s somatic, cognitive, emotional, and behavioral reactions from a symptomatic perspective in Chinese youth samples. Following
Wei Cai, Yunglung Tang, Song Wu, Hong Li
openalex   +2 more sources

The sdA problem - II. Photometric and Spectroscopic Follow-up [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2018
Subdwarf A star (sdA) is a spectral classification given to objects showing H-rich spectra and sub-main sequence surface gravities, but effective temperature lower than the zero-age horizontal branch. Their evolutionary origin is an enigma. In this work,
Castanheira, B. G.   +5 more
core   +4 more sources

The sdA problem – I. Physical properties [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
The so-called sdA stars are defined by having H-rich spectra and surface gravities similar to hot subdwarf stars, but effective temperature below the zero-age horizontal branch. Their evolutionary history is an enigma: their surface gravity is too high for main sequence stars, but too low for single evolution white dwarfs.
Pelisoli, Ingrid   +2 more
openaire   +4 more sources

Suppression of adipocyte differentiation and lipid accumulation by stearidonic acid (SDA) in 3T3-L1 cells

open access: yesLipids in Health and Disease, 2017
Background Increased consumption of omega-3 (ω-3) fatty acids found in cold-water fish and fish oil has been reported to protect against obesity. A potential mechanism may be through reduction in adipocyte differentiation. Stearidonic acid (SDA), a plant-
Yueru Li   +9 more
doaj   +2 more sources

Lessons Learned from Italian Nursing Homes during the COVID-19 Outbreak: A Tale of Long-Term Care Fragility and Policy Failure

open access: yesJournal of Long-Term Care, 2021
The paper critically discusses policy implications and policy lessons from COVID-19 management in the Italian LTC sector. The aim of the paper is to highlight strengths and weaknesses of measures promoted to support nursing homes during the pandemic and ...
Elisabetta Notarnicola   +3 more
doaj   +3 more sources

Both Natural and Induced Anti-Sda Antibodies Play Important Roles in GTKO Pig-to-Rhesus Monkey Xenotransplantation

open access: yesFrontiers in Immunology, 2022
Sda, produced by the B4GALNT2 enzyme, has been recognized as an important xenoantigen for pig-to-nonhuman primate xenotransplantation. However, little is known about Sda expression in pigs and its immunogenicity in xenotransplantation.
H. Feng   +9 more
semanticscholar   +1 more source

SDA-Vis: A Visualization System for Student Dropout Analysis Based on Counterfactual Exploration

open access: yesApplied Sciences, 2022
High and persistent dropout rates represent one of the biggest challenges for improving the efficiency of the educational system, particularly in underdeveloped countries.
Germain García-Zanabria   +4 more
semanticscholar   +1 more source

The Cancer-Associated Antigens Sialyl Lewisa/x and Sda: Two Opposite Faces of Terminal Glycosylation

open access: yesCancers, 2021
Simple Summary The glycosyltransferase β1,4-N-acetylgalactosaminyltransferae 2 (B4GALNT2), product of the B4GALNT2 gene is responsible for the biosynthesis of the carbohydrate antigen Sda.
F. dall’Olio, M. Pucci, N. Malagolini
semanticscholar   +1 more source

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