Results 21 to 30 of about 485,931 (261)
Weak completeness of the Bourbaki quasi-uniformity
Applied General Topology, 2001 The concept of semicompleteness (weaker than half-completeness) is defined for the Bourbaki quasi-uniformity of the hyperspace of a quasi-uniform space.
M.A. Sánchez Granero
doaj +1 more source
Evaluating U-Space for UAM in Dense Controlled Airspace
Drones, 2023 The operation of unmanned aircraft systems in shared airspace can serve as an accelerator for the global economy and a sensitive addition to the existing mix of transportation modes.
Michal Černý +4 more
doaj +1 more source
, 2022 {"references": ["SJU. (2021). BUBBLES: Defining the Building Basic Blocks for a Uspace Separation Management Service. Retrieved from SESAR JU: https://www.sesarju.eu/projects/bubbles", "DACUS. (2021). Demand and Capacity Optimisation for U-space: Keep the Balance in Drone Traffic. Retrieved from DACUS: https://dacus-research.eu/", "European Commission.
Chuquitarco Jiménez, Carlos Alexander +3 more
openaire +2 more sources
Embedding into discretely absolutely star-Lindelöf spaces II
Applied General Topology, 2009 A space X is discretely absolutely star-Lindelöf if for every open cover U of X and every dense subset D of X, there exists a countable subset F of D such that F is discrete closed in X and St(F, U) = X, where St(F, U) = S{U ∈ U : U ∩F 6= Ø}.
Yan-Kui Song
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Space Weather, 2021 While low and high‐latitude ionospheric scintillation have been extensively reported, significantly less information is available about the properties of and conditions leading to mid‐latitude scintillations.
F. S. Rodrigues +4 more
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Aerospace, 2020 Opening the sky to new classes of airspace user is a political and economic imperative for the European Union. Drone industries have a significant potential for economical growth according to the latest estimations.
Cristina Barrado +9 more
doaj +1 more source
Unmanned Aerial Traffic Management System Architecture for U-Space In-Flight Services
Applied Sciences, 2021 This paper presents a software architecture for Unmanned aerial system Traffic Management (UTM). The work is framed within the U-space ecosystem, which is the European initiative for UTM in the civil airspace.
Carlos Capitán +4 more
doaj +1 more source
Air and Space Law, 2019 The integration of civil unmanned aircraft systems (drones) into airspace has turned out to be a real challenge. Drones have difficulties in following many of the rules designed for manned aviation, because drones are plentiful and cheap, because they have no pilot on board, and because they are often flown at a very low altitude.
openaire +2 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley +1 more source
Threat Management Methodology for Unmanned Aerial Systems Operating in the U-Space
IEEE Access, 2022 This paper presents a threat management methodology for Unmanned Aircraft Systems (UAS) operating in the civil airspace. The work is framed within an Unmanned Traffic Management (UTM) system based on the U-space initiative.
Carlos Capitan +3 more
doaj +1 more source