Results 81 to 90 of about 93,612 (311)

Optimal on-off cooperative manoeuvers for long-term satellite cluster flight [PDF]

open access: yes, 2014
When a group of satellites is equipped with a particulary simple propul- sion system, e.g. cold-gas thrusters, constraints on the thrust level and total propellant mass renders cluster-keeping extremely challenging.
Gurfil, Pini   +2 more
core   +1 more source

Demonstration on the indexes design of gravity satellite orbit parameters in the low-low satellite-to-satellite tracking mode

open access: yesGeodesy and Geodynamics, 2013
Combining with the exigent demand of the development of satellite gravimetry system in China, aiming at the determination of technical indexes of gravity satellite orbit parameters, on the basis of the numerical experiments and results analysis, the ...
Liu Xiaogang   +3 more
doaj   +1 more source

The Case of a 40‐Year‐Old Man With New‐Onset Status Epilepticus in the Setting of HIV Infection

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT A 40‐year‐old man from Andhra Pradesh in India, while on regular antiretroviral treatment (ART) for long‐standing HIV infection presented with a 1‐day history of new‐onset status epilepticus. CT and MRI brain showed multifocal cerebral ring lesions, some of which demonstrated characteristic ‘hole‐with‐a‐dot’ sign.
Vadde Akhil, Ramachandiran Nandhagopal
wiley   +1 more source

Autonomous satellite constellation for enhanced Earth coverage using coupled selection equations [PDF]

open access: yes, 2013
This paper presents a novel solution to the problem of autonomous task allocation for a self-organising constellation of small satellites in Earth orbit.
Colombo, Camilla   +3 more
core  

Intercomparison of satellite-based and model-based rainfall analyses [PDF]

open access: yes, 2006
Four satellite rain estimations based on microwave (MW), infrared (IR) or combined MW-IR techniques are compared with the BOlogna Limited Area Model (BOLAM) rain forecast for a severe weather event (8–13 November 2001) over the western Mediterranean Sea.
S. Davolio   +5 more
core   +1 more source

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

open access: yesArthritis Care &Research, EarlyView.
Objective Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined the following: (1) associations between economic insecurities and PROs, and (2) the impact of screening and addressing economic ...
Jay Patel   +8 more
wiley   +1 more source

TANDEM-X: A RADAR INTERFEROMETER WITH TWO FORMATION FLYING SATELLITES [PDF]

open access: yes, 2012
TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an innovative formation flying radar mission that opens a new era in spaceborne radar remote sensing.
Zink, Manfred   +2 more
core  

Research on gating alignment strategy for flow scheduling in satellite formation

open access: yesTongxin xuebao
Aiming at the time-sensitive network (TSN) gating scheduling required high synchronization accuracy of adjacent nodes, the delay fluctuation of inter-satellite wireless links caused the deviation of gate opening of adjacent nodes, resulting in the ...
XU Chuan   +4 more
doaj   +2 more sources

Cumulative Social Disadvantage and Disease Activity in Juvenile Idiopathic Arthritis: A Childhood Arthritis and Rheumatology Research Alliance Registry Study

open access: yesArthritis Care &Research, EarlyView.
Objective Social determinants of health (SDOH) contribute to juvenile idiopathic arthritis (JIA) disparities, but most studies have assessed SDOH independently rather than cumulatively across individual, family, and neighborhood levels. Using a socioecological framework, we investigated the relationship among cumulative social disadvantage ...
William Daniel Soulsby   +448 more
wiley   +1 more source

Large Along-Track Baseline SAR-GMTI: First Results With The TerraSAR-X/TanDEM-X Satellite Constellation [PDF]

open access: yes, 2011
In the paper first ground moving target indication (GMTI) and parameter estimation results obtained with the spaceborne TerraSAR-X/TanDEM-X satellite constellation are presented and discussed.
Baumgartner, Stefan V.   +3 more
core   +1 more source

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