Results 1 to 10 of about 85,023 (119)

A Fast Star Identification Algorithm of Star Sensors in the LIS Mode [PDF]

open access: yesRemote Sensing, 2022
In the South Atlantic Anomaly (SAA) area, due to the influence of transient noise caused by space radiation, a star sensor can easily stay in the lost-in-space (LIS) mode for a long time.
Kaili Lu   +4 more
doaj   +6 more sources

An Autonomous Global Star Identification Algorithm Based on the Fast MST Index and Robust Multi-Order CCA Pattern

open access: yesRemote Sensing, 2023
Star identification plays a key role in spacecraft attitude measurement. Currently, most star identification algorithms tend to perform well only in a scene without noise and are highly sensitive to noise.
Zijian Zhu   +7 more
doaj   +1 more source

A Robust Star Identification Algorithm Based on a Masked Distance Map

open access: yesRemote Sensing, 2022
The authors of this paper propose a robust star identification algorithm for a ‘Lost-In-Space’-mode star tracker for lost-cost CubeSat missions. A two-step identification framework and an embedded validation mechanism were designed to accelerate the ...
Hao Yuan, Dongxu Li, Jie Wang
doaj   +1 more source

Simulation of the loss of passing fast ions induced by magnetic islands in EAST tokamak plasmas

open access: yesAIP Advances, 2021
The loss of beam ions due to magnetic islands is investigated in a tokamak. The perturbed guiding-center drifts of passing particles including the effect of the finite orbit width are demonstrated.
Limin Yu   +8 more
doaj   +1 more source

“But What about Me, and What I Felt?”: Morrissey’s List of the Lost as Queer Gothic

open access: yes[sic], 2022
In one of the numerous negative reviews, Michael Hann described singer-songwriter Morrissey’s debut novella, List of the Lost (2015), as “an unpolished turd of a book, the stale excrement of Morrissey’s imagination,” yet from a queer perspective, it is ...
Brontë Schiltz
doaj   +1 more source

Operational Challenges of Modern Demand-Control Ventilation Systems: A Field Study

open access: yesBuildings, 2022
To maintain proper indoor air quality and increase energy efficiency, a demand-control ventilation (DCV) system has become a popular solution. This paper reports the findings of a field study conducted on the performance of the DCV systems in eight ...
Weixin Zhao   +4 more
doaj   +1 more source

A Civilizing Mission? Music and the Cosmopolitan in Edward Said

open access: yesMashriq & Mahjar, 2021
Though Edward Said’s passionate interest in Western classical music is a well-known aspect of his biography, scholars have largely treated Said’s musical writings and activities as peripheral to his intellectual legacy.
Laura Robson
doaj   +1 more source

Bacteria in the biosynthesis of animal nutrition components for crews of autonomous transport systems [PDF]

open access: yesE3S Web of Conferences, 2023
The International Space Station (ISS) is currently using a water electrolysis process to produce oxygen. The hydrogen produced as a by-product is removed overboard.
Glukhikh Sergey
doaj   +1 more source

Longitudinal modes of bunched beams with weak space charge

open access: yesPhysical Review Accelerators and Beams, 2021
Longitudinal collective modes of a bunched beam with a repulsive inductive impedance (the space charge below transition or the chamber inductance above it) are analytically described by means of reduction of the linearized Vlasov equation to a ...
Alexey Burov
doaj   +1 more source

Development of a technique for preventing visual fatigue in students while working on a personal computer [PDF]

open access: yesСлобожанський науково-спортивний вісник, 2018
Development of a technique for preventing visual fatigue in students while working on a personal computer. Prevention of visual fatigue among students of higher educational institutions will contribute to their improvement, increase of labor productivity
Ivan Dubrovskiy   +4 more
doaj   +1 more source

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