Results 21 to 30 of about 160,252 (187)

Effects of heaving and pitching motions on underside aerodynamics of a sedan vehicle

open access: yesJournal of Fluid Science and Technology, 2019
Unsteady pressure distributions around a simplified sedan automobile model were investigated by conducting dynamic wind-tunnel testing using the newly developed forced oscillating apparatus, HEXA-X3, which can produce 6-degrees-of-freedom motion.
Ryuichi MARUYAMA   +3 more
doaj   +1 more source

Biomechanical Basis of Interval Throwing Programs for Baseball Pitchers: A Systematic Review

open access: yesInternational Journal of Sports Physical Therapy, 2023
# Background Interval throwing programs are used in rehabilitation of throwing injuries, especially ulnar collateral ligament injuries. Athletes who are rehabilitating begin by throwing on flat ground progressing through increasing distances, number of ...
Travis Dias   +6 more
doaj   +1 more source

Comparison of Kinematic Sequences During Curveball and Fastball Baseball Pitches

open access: yesFrontiers in Sports and Active Living, 2021
Performance of a sequential proximal-to-distal transfer of segmental angular velocity (or Kinematic Sequence) is reported to reduce stress on musculoskeletal structures and thus the probability of injury while also maximizing ball velocity.
Donna Moxley Scarborough   +3 more
doaj   +1 more source

Pitch Perception [PDF]

open access: yesThe Journal of Neuroscience, 2012
Pitch is one of the primary auditory sensations and plays a defining role in music, speech, and auditory scene analysis. Although the main physical correlate of pitch is acoustic periodicity, or repetition rate, there are many interactions that complicate the relationship between the physical stimulus and the perception of pitch.
openaire   +2 more sources

A new measurement method for micro deformation of sheet on handling processes (Development of an apparatus for measuring micro deformation)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
In fabrication process for electric devices, high precision patterning on sheet substrates is required. To pattern with high precision, high precision positioning of the sheet to the target location is needed.
Katsumasa YAMAZAKI   +2 more
doaj   +1 more source

A dokumentumfilm-tervek piaci követelményeiről és ezek átalakulásáról – első rész

open access: yesSymbolon, 2023
The Variable Requirements of the Changing Documentary Film Market The international market of the documentary projects – the so called “pitching forums” – was formed about 30 years ago at the International Documentary Forum Amsterdam (IDFA) film festival.
Róbert Lakatos
doaj  

Hydrodynamic stability of swimming in ostraciid fishes: role of the carapace in the smooth trunkfish Lactophrys triqueter (Teleostei: Ostraciidae) [PDF]

open access: yes, 2003
The hydrodynamic bases for the stability of locomotory motions in fishes are poorly understood, even for those fishes, such as the rigid-bodied smooth trunkfish Lactophrys triqueter, that exhibit unusually small amplitude recoil movements during ...
Bartol, Ian K.   +5 more
core   +2 more sources

Performance Evaluation of Flapping-Wing Energy Harvester in Confined Duct Environments

open access: yesEnergies
This study investigates the impact of different duct designs on the energy-harvesting performance of oscillating-wing systems in both partially and fully confined environments.
Maqusud Alam, Chang-Hyun Sohn
doaj   +1 more source

Effects of non-sinusoidal pitching motion on the propulsion performance of an oscillating foil.

open access: yesPLoS ONE, 2019
Numerical simulations have been used in this paper to study the propulsion device of a wave glider based on an oscillating hydrofoil, in which the profile of the pitching and heaving motion have been prescribed for the sake of simplicity.
Zhanfeng Qi   +3 more
doaj   +1 more source

Experimental Study of Airfoil Aerodynamic Behavior under Oscillating Motion in Ground Effect [PDF]

open access: yesJournal of Applied Fluid Mechanics
When a flying vehicle approaches a water or land surface, it induces changes in the fluid flow field pattern known as the "ground effect." This research analyzes the ground effect phenomenon, exploring its impact on aerodynamic coefficients and flow ...
M. Hadi Doolabi   +2 more
doaj   +1 more source

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