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Unmanned Spacecrafts and Space Drones as the Challenges for Space Law [PDF]

open access: yesФилософия и космология, 2020
In the article, the authors considered the challenges for space law, which are created by the intensive development of production technologies of unmanned spacecrafts and space drones, as well as their use in the space industry. The authors clarified the
Svitlana Vyshnovetska, Volodymyr Melnyk
doaj   +1 more source

Remarks on monotonically star compact spaces [PDF]

open access: yesMathematica Bohemica, 2022
A space $ X $ is said to be monotonically star compact if one assigns to each open cover $ \mathcal{U} $ a subspace $ s(\mathcal{U}) \subseteq X $, called a kernel, such that $ s(\mathcal{U}) $ is a compact subset of $ X $ and $ {\rm St}(s(\mathcal{U ...
Sumit Singh
doaj   +1 more source

Air Traffic Management as a Vital Part of Urban Air Mobility—A Review of DLR’s Research Work from 1995 to 2022

open access: yesAerospace, 2023
Urban air mobility is a rapidly growing field of research. While drones or unmanned aerial vehicles have been operated mainly in the private and military sector in the past, an increasing range of opportunities is opening up for commercial applications ...
Bianca I. Schuchardt   +6 more
doaj   +1 more source

On the importance of neutral composition and temperature measurements in the 100–200 km altitude region

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Currently, thermospheric species densities and temperatures between ∼100 and 200 km are not known to the accuracy needed to fully characterize how the thermosphere transitions from a well-mixed atmosphere to a diffusively separated atmosphere with zero ...
McArthur Jones   +4 more
doaj   +1 more source

DI-5-Cuffs: Bone Remodelling and Associated Metabolism Markers in Humans After Five Days of Dry Immersion to Simulate Microgravity

open access: yesFrontiers in Physiology, 2022
Background: The dry immersion (DI) model closely reproduces factors of spaceflight environment such as supportlessness, mechanical and axial unloading, physical inactivity, and induces early increased bone resorption activity and metabolic responses as ...
Marie-Thérèse Linossier   +8 more
doaj   +1 more source

Predicting Marine In Situ Heat Flow Using a Geospatial Machine Learning Conformal Prediction

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Heat flow measurements over the past decades have drastically increased in number. However, even with vast increases in measurements, large geospatial gaps exist, most notably across Earth's oceans.
J. H. Graw, W. T. Wood, B. J. Phrampus
doaj   +1 more source

Identification, Categorisation and Gaps of Safety Indicators for U-Space

open access: yesEnergies, 2020
Many civilian applications of commercial unmanned aircraft are being planned to operate in the years ahead. Several countries have developed their own framework to design the operation of unmanned aircraft and the different services that demand safe ...
Javier Alberto Pérez-Castán   +4 more
doaj   +1 more source

Index boundedness and uniform connectedness of space of the G-permutation degree

open access: yesApplied General Topology, 2021
In this paper the properties of space of the G-permutation degree, like: weight, uniform connectedness and index boundedness are studied. It is proved that: (1) If (X, U) is a uniform space, then the mapping π s n, G : (X n , U n ) → (SP n GX, SP n GU ...
R. B. Beshimov   +2 more
doaj   +1 more source

Unmanned Free Balloon Flight’s Integration into Unmanned Aircraft System Traffic Management

open access: yesActa Technica Jaurinensis, 2019
This paper describes and inspects unmanned aerial vehicle, unmanned aircraft system, unmanned aircraft system traffic management, light and medium unmanned free balloons.
Norbert Hegyi, János Jósvai
doaj   +1 more source

Slow solar wind acceleration through the middle corona: Spacecraft radio studies

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The “Middle Corona”, defined by recent consensus as the region spanning 1.5–6 solar radii (R⊙, heliocentric), is an important zone through which several structural and dynamic changes occur in coronal streamer regions. Among these is a regime change from
David B. Wexler   +3 more
doaj   +1 more source

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