Results 41 to 50 of about 36,236,534 (364)

Waveguide-integrated van der Waals heterostructure photodetector at telecom band with high speed and high responsivity [PDF]

open access: yesNature Nanotechnology, 2019
Intensive efforts have been devoted to the exploration of new optoelectronic devices based on two-dimensional transition-metal dichalcogenides (TMDCs) owing to their strong light–matter interaction and distinctive material properties.
N. Flöry   +7 more
semanticscholar   +1 more source

High-Speed Autonomous Drifting With Deep Reinforcement Learning [PDF]

open access: yesIEEE Robotics and Automation Letters, 2020
Drifting is a complicated task for autonomous vehicle control. Most traditional methods in this area are based on motion equations derived by the understanding of vehicle dynamics, which is difficult to be modeled precisely.
Peide Cai   +4 more
semanticscholar   +1 more source

Influence of unsupported sleepers on the dynamic stability of ballasted bed based on wheelset impact tests

open access: yesRailway Engineering Science, 2023
The unsupported sleeper can change the load characteristics of ballast particles and thus affect the dynamic stability of a ballasted bed. In this work, a laboratory test was constructed on a ballasted track containing unsupported sleepers. The ballasted
Juzhen Liu   +6 more
doaj   +1 more source

High-Speed Electrochemical Imaging [PDF]

open access: yesACS Nano, 2015
The design, development, and application of high-speed scanning electrochemical probe microscopy is reported. The approach allows the acquisition of a series of high-resolution images (typically 1000 pixels μm(-2)) at rates approaching 4 seconds per frame, while collecting up to 8000 image pixels per second, about 1000 times faster than typical imaging
Dmitry Momotenko   +4 more
openaire   +2 more sources

Implementing High-speed Running and Sprinting Training in Professional Soccer

open access: yesInternational Journal of Sports Medicine, 2020
High-speed running and sprinting training play an important role in the development of physical capabilities, sport-specific performance and injury prevention among soccer players.
M. Beato, B. Drust, A. Iacono
semanticscholar   +1 more source

High Speed Simulation Analytics [PDF]

open access: yes, 2019
Simulation, especially Discrete-event simulation (DES) and Agent-based simulation (ABS), is widely used in industry to support decision making. It is used to create predictive models or Digital Twins of systems used to analyse what-if scenarios, perform ...
Kiss, T., Taylor, S.J.E., Anagnostou, A.
core   +1 more source

Research on Variable-Step-Size Adaptive Filter Algorithm with a Momentum Term

open access: yesApplied Sciences, 2023
To address the contradiction between the convergence error and convergence rate in the LMS algorithm, this study proposes a variable-step-size adaptive filter algorithm with a momentum term based on the logistic function.
Binbin Li   +7 more
doaj   +1 more source

Status of research on non-conventional technology assisted single-point diamond turning

open access: yesNanotechnology and Precision Engineering, 2023
With the increasing use of difficult-to-machine materials in aerospace applications, machining requirements are becoming ever more rigorous. However, traditional single-point diamond turning (SPDT) can cause surface damage and tool wear.
Zhuang Chen   +4 more
doaj   +1 more source

Numerical Study of Nonadiabatic Wall Effects on Aerodynamic Characteristics of CHN-T1 Standard Model

open access: yesAerospace, 2023
Cryogenic wind tunnels provide the for possibility aerodynamic tests to take place over high Reynolds numbers by operating at a low gas temperature to meet the real flight simulation requirements, especially for state-of-the-art large transport aircrafts.
Xiaobing Wang   +7 more
doaj   +1 more source

A Study on the Measuring System of Contact Force of Pantograph for the High-Speed Train

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
The overhead pantograph for the high speed train is a mechanical and electrical part mounted on the train roof to supply the train with electrical power from the catenary system.
Jin-Sung PAIK   +3 more
doaj   +1 more source

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