Results 41 to 50 of about 28,026 (100)

Implications of Output Impedance Mask Stability on Power Bus Architectures Used in Space Platforms

open access: yesAerospace
The European Power Standard, used when designing and implementing spacecraft power buses, imposes stringent impedance requirements for high reliability and robustness, unlike other standards such as those from the American Institute for Aeronautics and ...
José A. Carrasco   +7 more
doaj   +1 more source

UAV autonomous path optimization simulation based on radar tracking prediction

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
In the UAV path planning study, due to the relative movement of multiple targets and the UAV, long-term and large-scale UAV, autonomous tracking has not been achieved.
Bo Wang   +3 more
doaj   +1 more source

International legal management of environmental protection from the impact of practical astronautics

open access: yesRUDN Journal of Law, 2009
The notion of international environmental management is formulated in the article; basic types of adverse impact of practical astronautics on environment are analyzed with special reference to the combat of pollution of outer-space with space debris.
S A Mohammad
doaj  

Sketch of an Astronaut

open access: yesThe Iowa Review, 2005
I've wondered how far a man in a spacesuit can go in this little town, shaped for sleepy farmers and teens with buckets of turnips, who throw them off trucks at crowds of children. He has his own source of oxygen, so the smoke of Cuban cigars at the lodge or the gray clouds over the daily book burnings don't tear up his eyes or roll him over into a ...
openaire   +2 more sources

Team Flexibility in Organizational Change Context: Antecedents and Consequences

open access: yesPsychology Research and Behavior Management, 2021
Bin Ling,1 Ziqian Liu,1 Dusheng Chen,2 Lijun Sun3 1Business School, Hohai University, Nanjing, People’s Republic of China; 2Hangzhou Hikvision Digital Technology Co., Ltd., Hangzhou, People’s Republic of China; 3Arts College, Nanjing University of ...
Ling B, Liu Z, Chen D, Sun L
doaj  

Optimization of the n/γ Pulse Shape Discrimination Performance of Plastic Scintillator Coupled With SiPM Arrays

open access: yesScience and Technology of Nuclear Installations
This paper studies the influence of bias voltage on pulse waveform, energy resolution, and particle discrimination performance to optimize the performance of n/γ pulse shape discrimination (PSD) for plastic scintillator coupled with SiPM arrays ...
Mengmeng Wang   +7 more
doaj   +1 more source

A Multi-scale features-based cloud detection method for Suomi-NPP VIIRS day and night imagery [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Cloud detection is a necessary step before the application of remote sensing images. However, most methods focus on cloud detection in daytime remote sensing images.
J. Li   +5 more
doaj   +1 more source

Numerical Study on the Self-Pulsation Characteristics of LOX/GH2 Swirl Coaxial Injector

open access: yesInternational Journal of Aerospace Engineering
To investigate the self-pulsation characteristics of a liquid-centered swirl coaxial injector with liquid oxygen (LOX) and gas hydrogen (GH2) as the working mediums under supercritical condition, a numerical simulation was employed.
Wentong Qiao   +7 more
doaj   +1 more source

Deep residual shrinkage network with multichannel VMD inputs for noise reduction of micro-thrust measurement

open access: yesAIP Advances
Micro-newton thrusters are widely utilized in the field of astronautics. Typically, the precision of micro-newton thrust measurement fundamentally depends on the background noise level.
Zhikang Liu   +3 more
doaj   +1 more source

Static Equilibrium Characteristics of Full-Flow Staged Combustion Cycle Engine Under Different Propellants

open access: yesInternational Journal of Aerospace Engineering
The full-flow staged combustion cycle (FFSC) engine is a promising liquid rocket propulsion system owing to its capacity for high specific impulse. The present study introduces an equilibrium model of the FFSC engine, utilizing the Raptor engine as a ...
Haodong He   +5 more
doaj   +1 more source

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