Results 21 to 30 of about 4,749,326 (300)

Autonomous vehicles and urban space management

Scientific Journal of Silesian University of Technology. Series Transport, 2021
Discussions on how urban space would be transformed by the use of autonomous vehicles (AVs) are scarce. This study identifies the impacts caused by the shared use of AVs on urban parking and urban space management. An estimation method was formulated considering the reduction in parking demand, the possible alteration in vehicle ownership, and the ...
Dahlen SIQUEIRA SILVA, Csaba CSISZÁR, Dávid FÖLDES   +2 more
openaire   +2 more sources

Characterization of vortex-shedding regimes and lock-in response of a wind turbine airfoil with two high-fidelity simulation approaches [PDF]

Wind Energy Science
In this work, the vortex-induced vibration (VIV) phenomenon affecting a wind turbine airfoil section at 90° incidence is analysed with two numerical approaches, a two-dimensional (2D) setup of the airfoil, simulated using the unsteady Reynolds-averaged ...
R. Fernandez-Aldama, G. Papadakis, O. Lopez-Garcia, S. Avila-Sanchez, V. A. Riziotis, A. Cuerva-Tejero, C. Gallego-Castillo   +6 more
doaj   +1 more source

Excitation of zero-frequency magnetic field-aligned currents by ionospheric heating [PDF]

Annales Geophysicae, 2011
Time-dependent, three-dimensional numerical simulations of the reduced MHD model describing shear Alfvén waves in the magnetosphere provide an interesting prediction superficially similar to results of several ionospheric heating experiments conducted
A. V. Streltsov, A. V. Streltsov, T. R. Pedersen, T. R. Pedersen   +3 more
doaj   +1 more source

A Comparison of Sporadic-E Occurrence Rates Using GPS Radio Occultation and Ionosonde Measurements

Remote Sensing, 2022
Sporadic-E (Es) occurrence rates from Global Position Satellite radio occultation (GPS-RO) measurements have shown to vary by a factor of five between studies, motivating the need for a comparison with ground-based measurements.
Rodney A. Carmona, Omar A. Nava, Eugene V. Dao, Daniel J. Emmons   +3 more
doaj   +1 more source

Space Discretization-Based Optimal Trajectory Planning for Automated Vehicles in Narrow Corridor Scenes

, 2022
The narrow corridor is a common working scene for automated vehicles, where it is pretty challenging to plan a safe, feasible, and smooth trajectory due to the narrow passable area constraints.
Zhaobo Qin, Xuerong Lin, Yougang Bian, Shijie Yuan, Biao Xu, Manjiang Hu   +5 more
core   +1 more source

Effects of the postsunset vertical plasma drift on the generation of equatorial spread F

Progress in Earth and Planetary Science, 2018
Equatorial spread F (ESF) irregularities are caused by plasma instability processes in the equatorial ionosphere and especially related to plasma bubble phenomena in the topside F region.
Chao-Song Huang
doaj   +1 more source

N-dimensional Lomb Scargle Periodogram analysis of traveling ionospheric disturbances using ionosonde data

Frontiers in Astronomy and Space Sciences
There is a multitude of wave-like phenomena in Earth’s ionosphere and thermosphere such as acoustic waves, gravity waves, planetary waves, tides, and Traveling Ionospheric Disturbances (TIDs) which are the ionospheric manifestation of atmospheric waves ...
Joe Hughes, Ian Collett, Anastasia Newheart, Ryan Kelly, Walter Junk Wilson, Ken Obenberger, Russell Landry, Jonah Colman, Joe Malins   +8 more
doaj   +1 more source

A Novel Lane-Change Decision-Making With Long-Time Trajectory Prediction for Autonomous Vehicle

IEEE Access, 2023
In the process of autonomous vehicle lane changing, a reliable decision-making system is crucial for driving safety and comfort. However, traditional decision-making systems have short-term characteristics, which makes them susceptible to real-time ...
Xudong Wang, Jibin Hu, Chao Wei, Luhao Li, Yongliang Li, Miaomiao Du   +5 more
doaj   +1 more source

Statistical analysis of C/NOFS planar Langmuir probe data [PDF]

Annales Geophysicae, 2014
The planar Langmuir probe (PLP) onboard the Communication/Navigation Outage Forecasting System (C/NOFS) satellite has been monitoring ionospheric plasma densities and their irregularities with high resolution almost seamlessly since May 2008 ...
E. Costa, P. A. Roddy, J. O. Ballenthin
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source