Results 21 to 30 of about 67,240,934 (242)

Robotic Manipulation and Capture in Space: A Survey

open access: yesFrontiers in Robotics and AI, 2021
Space exploration and exploitation depend on the development of on-orbit robotic capabilities for tasks such as servicing of satellites, removing of orbital debris, or construction and maintenance of orbital assets. Manipulation and capture of objects on-
Evangelos Papadopoulos   +3 more
doaj   +1 more source

Orbital Rhabdomyosarcoma [PDF]

open access: yesCancer Control, 2004
Although rhabdomyosarcoma (RMS) is a rare tumor among the entire group of mesenchymal malignancies, it is a relatively common lesion and significant challenge for the ocular oncologist in terms of its diagnosis and management.A comprehensive literature search of articles published over the past 30 years in PubMed was conducted.Orbital RMS usually ...
Karcioglu, Zeynel A.   +3 more
openaire   +4 more sources

Orbital Lymphoma Masquerading as Orbital Cellulitis [PDF]

open access: yesCase Reports in Ophthalmological Medicine, 2021
Background. Orbital lymphomas are primarily non-Hodgkin type and can originate from the eyelids, extraocular muscles, soft tissue orbital adnexa, conjunctiva, or lacrimal glands. Orbital malignancies often represent a diagnostic dilemma for clinicians given their varying and atypical presentations. Objective.
B. D. Chaurasiya   +5 more
openaire   +3 more sources

Assessment of S-NPP VIIRS On-Orbit Radiometric Calibration and Performance

open access: yesRemote Sensing, 2016
The VIIRS instrument on board the S-NPP spacecraft has successfully operated for more than four years since its launch in October 2011. Many VIIRS environmental data records (EDR) have been continuously generated from its sensor data records (SDR) with ...
Xiaoxiong Xiong   +9 more
doaj   +1 more source

Orbits [PDF]

open access: yesSymposium - International Astronomical Union, 1987
Orbits that respect at least three isolating integrals of motion have very special structures in phase space. The main characteristics of this structure are reviewed, and the concrete examples that are provided by orbits in Stäckel potentials, are discussed.
openaire   +2 more sources

Actinomycosis of the Orbit [PDF]

open access: yesOphthalmic Plastic & Reconstructive Surgery, 1992
Actinomycosis is a very rare cause of orbital abscess usually attributable to direct spread from adjacent structures. A case of actinomycosis of the orbit is presented, which was treated as orbital pseudotumour for 3 months before progression of signs and symptoms, despite high dose steroids, led to the diagnosis being reconsidered.
Sullivan, TJ, Aylward, GW, Wright, JE
openaire   +5 more sources

Bulk plasma properties at geosynchronous orbit. [PDF]

open access: yes, 2005
We present a comprehensive study of plasma properties at geosynchronous orbit for electron and ion energies between ∼1 eV and ∼45 keV, between 1990 and 2001.
Liemohn, M. W.   +5 more
core   +5 more sources

On-Orbit Magnetometer Data Calibration Using Genetic Algorithm and Interchangeability of the Calibration Parameters

open access: yesApplied Sciences, 2023
Magnetometers are important sensors with applications in the attitude determination and control systems of satellites. CubeSats have certain limitations related to power, mass, and volume.
Dulani Chamika Withanage   +2 more
doaj   +1 more source

Robotic On-Orbit Servicing - DLR's Experience and Perspective. [PDF]

open access: yes, 2006
The increasing number of launched satellites per year, calls for solutions to keep free operational space for telecommunication systems in geo-synchronized orbit, as well as to avoid the endangering of space systems in LEO (Low-Earth Orbit) and of the ...
Landzettel, Klaus   +11 more
core   +1 more source

A Star Sensor On-Orbit Calibration Method Based on Singular Value Decomposition

open access: yesSensors, 2019
The navigation accuracy of a star sensor depends on the estimation accuracy of its optical parameters, and so, the parameters should be updated in real time to obtain the best performance. Current on-orbit calibration methods for star sensors mainly rely
Liang Wu   +5 more
doaj   +1 more source

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