Results 11 to 20 of about 1,212,846 (264)

Solar Wind Speed Prediction With Two‐Dimensional Attention Mechanism

open access: yesSpace Weather, 2021
As more and more high‐technical systems are exposed to the space environment, extreme space weather becomes a great threat to human society. In the solar system, space weather is influenced by the solar wind, such that reliable prediction of solar wind ...
Yanru Sun   +4 more
doaj   +1 more source

Review of the atypical systems of slow-speed two-stroke marine engines

open access: yesAnnals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, 2023
This article provides a review of the varying systems of slow-speed, two-stroke marine engines. The paper begins with the operating principles of the typical two-stroke engine cycle employed in these engines, highlighting the intake, compression ...
Augustin-Damian Iurașco
doaj   +1 more source

High-Speed Two-Photon Imaging [PDF]

open access: yesCold Spring Harbor Protocols, 2013
The small size of neuronal dendrites and spines combined with the high speed of neurophysiological signals, such as transients in membrane potential or ion concentration, necessitates that any functional study of these structures uses recording methods with both high spatial and high temporal resolutions.
Gaddum Duemani, Reddy, Peter, Saggau
openaire   +2 more sources

Selection of the optimal two-speed planetary gear train for fishing boat propulsion [PDF]

open access: yesFME Transactions, 2020
Planetary gear trains (PGTs) offer numerous benefits when compared to conventional gear trains, e. g. multi-carrier planetary gear trains may be built by linking the shafts of different component planetary gear trains.
Troha Sanjin   +3 more
doaj  

Fuzzy Logic Controlled Two Speed Electromagnetic Gearbox for Electric Vehicle

open access: yesInternational Journal of Technology, 2022
Epicyclic transmission (ET), five-speed manual gearbox (5-SMT), automatic transmission (AT), and continuously variable transmission (CVT) are all possible transmission options for electric vehicles (EVs).
Ataur Rahman   +2 more
doaj   +1 more source

Seeder-fertilizer performance with two furrowing mechanisms and sowing speed

open access: yesRevista Agrogeoambiental, 2020
The displacement velocity of the tractor-seeder set, associated with the furrowing mechanism, influences the plant distribution and the establishment of a correct plant stand in the field.
Antonio Luiz Viegas Neto   +4 more
doaj   +1 more source

Performance of Two Types of High Speed, High Efficiency ‎Axisymmetric Intakes [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
Performance of two axisymmetric air intakes are compared at conditions suitable for Mach number range from 2 to 8. First is the Busemann intake and second is the reversed isentropic nozzle. The isentropic nozzle is built by the method of characteristics.
Vladislav Galkin   +4 more
doaj   +1 more source

Vision: Two Speeds in the Retina [PDF]

open access: yesCurrent Biology, 2017
The central (foveal) retina takes about 30 milliseconds longer to signal to the brain than the peripheral retina. In the natural world, a 30 millisecond delay could have real consequences. Why did evolution do it this way?
openaire   +2 more sources

A Bimodal Hydrostatic Actuator for Robotic Legs with Compliant Fast Motion and High Lifting Force

open access: yesActuators, 2023
Robotic legs, such as for lower-limb exoskeletons and prostheses, have bimodal operation: (1) within a task, like for walking (high speed and low force for the swing phase and low speed and higher force when the leg bears the weight of the system); (2 ...
Alex Lecavalier   +3 more
doaj   +1 more source

The Two Pattern Speeds of NGC 3359

open access: yesAnnals of the New York Academy of Sciences, 2005
Abstract: Using both observations and theoretical techniques, we show that the barred spiral galaxy NGC 3359 contains two pattern speeds. The faster pattern speed for the bar is obtained from isophotal analysis and stellar orbit theory. To explain the spiral arms and the observed velocity field of the disk, a slower pattern speed is required ...
Boonyasait, V, Patsis, PA, Gottesman, ST
openaire   +3 more sources

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