Results 31 to 40 of about 142,927 (339)
Improving the Accuracy of the Martian Ephemeris Short-Term Prediction
Advances in Astronomy, 2018 The Chinese Mars exploration mission is planned to be launched in 2020, which includes an orbiter, a lander, and a rover. High precision Martian ephemeris is very important in Mars exploration, especially for the Martian orbit insertion and the Martian ...
Quan Shan +5 more
doaj +1 more source
A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods
Sensors, 2019 Because there are different types of BeiDou constellations with participating geostationary orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites, the maneuvering frequency of BeiDou satellites is higher than that of other navigation systems ...
Zhiwei Qin +7 more
doaj +1 more source
Orbit determination of Transneptunian objects and Centaurs for the prediction of stellar occultations [PDF]
, 2015 The prediction of stellar occultations by Transneptunian objects and Centaurs is a difficult challenge that requires accuracy both in the occulted star position as for the object ephemeris.
Assafin, M. +12 more
core +5 more sources
A Deep Space Orbit Determination Software: Overview and Event [PDF]
Journal of Astronomy and Space Sciences, 2017 This paper presents an overview of deep space orbit determination software (DSODS), as well as validation and verification results on its event prediction capabilities.
Youngkwang Kim +3 more
doaj +1 more source
A quantitative assessment of empirical magnetic field models at geosynchronous orbit during magnetic storms [PDF]
, 2008 [1] We evaluate the performance of recent empirical magnetic field models (Tsyganenko, 1996, 2002a, 2002b; Tsyganenko and Sitnov, 2005, hereafter referred to as T96, T02 and TS05, respectively) during magnetic storm times including both pre- and post ...
Huang, Chia-Lin L. +3 more
core +3 more sources
Zitterbewegung of electrons and holes in III-V semiconductor quantum wells
, 2005 The notion of zitterbewegung is a long-standing prediction of relativistic quantum mechanics. Here we extend earlier theoretical studies on this phenomenon for the case of III-V zinc-blende semiconductors which exhibit particularly strong spin-orbit ...
B. Jusserand +13 more
core +1 more source
Intrinsic Spin Hall Edges [PDF]
, 2005 The prediction of intrinsic spin Hall currents by Murakami \textit{et al.} and Sinova \textit{et al.} raised many questions about methods of detection and the effect of disorder.
E. I. Rashba +10 more
core +3 more sources
GOCE orbit predictions for SLR tracking [PDF]
GPS Solutions, 2010 After a descent phase of about half a year, the Gravity field and steady-state Ocean Circulation Explorer (GOCE) reached the final orbital altitude of the first measurement and operational phase (MOP-1) in September 2009. Due to this very low orbital altitude and the inactive drag compensation during descent, the generation of reliable predictions of ...
Jäggi, A., Bock, H., Floberghagen, R.
openaire +3 more sources
Reduction of Space Debris Collision Prediction Uncertainty Based on Q-Sat Precise Orbit
Space: Science & Technology, 2023 Collision probability is employed for evaluating whether there will be a dangerous encounter between 2 space objects. The fidelity of the collision probability mainly depends on the accuracies of orbit prediction and covariance prediction for the space ...
Huang Pu +3 more
doaj +1 more source
Parent‐to‐Child Information Disclosure in Pediatric Oncology
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Despite professional consensus regarding the importance of open communication with pediatric cancer patients about their disease, actual practice patterns of disclosure are understudied. Extant literature suggests a significant proportion of children are not told about their diagnosis/prognosis, which is purported to negatively ...
Rachel A. Kentor +12 more
wiley +1 more source