Results 41 to 50 of about 1,262,881 (342)

A theoretical analysis of a piezoelectric ultrasound device with an active matching layer [PDF]

open access: yes, 2007
This paper investigates the use of magnetically active materials in the matching layer of a piezoelectric transducer. This then allows the performance of the device to be dynamically altered by applying an external field.
Hayward, G.   +6 more
core   +1 more source

A Structure Load Performance Integrated Model Method for the Bridge-Type Displacement Amplification Mechanism

open access: yesMachines, 2022
The modeling of compliant bridge-type displacement amplification mechanisms has challenges due to the intrinsic coupling of kinematic and mechanical behaviors.
Feifei Tian   +5 more
doaj   +1 more source

Analysis of Compatible Discrete Operator Schemes for the Stokes Equations on Polyhedral Meshes [PDF]

open access: yes, 2014
Compatible Discrete Operator schemes preserve basic properties of the continuous model at the discrete level. They combine discrete differential operators that discretize exactly topological laws and discrete Hodge operators that approximate constitutive
Bonelle, Jerome, Ern, Alexandre
core   +6 more sources

Physical and physiological demands according to gender, playing positions, and match outcomes in youth basketball players. [Demandas físicas y fisiológicas según género, posiciones de juego y resultados del partido en jugadores de baloncesto juveniles].

open access: yesRevista Internacional de Ciencias del Deporte, 2022
This study aimed to compare physical and physiological demands in youth basketball players according to gender, playing positions, and match outcomes. 64 players (32 female and 32 male) from eight youth sub-elite basketball teams were monitored using an ...
Randall Gutiérrez-Vargas   +7 more
doaj   +1 more source

Are male soccer players accumulating sufficient load across varying microcycle structures? Examining the load, wellness and training/match ratios of a professional team [PDF]

open access: yesJournal of Men's Health, 2023
Professional soccer involves varying numbers of training sessions and matches each week, which can influence load distribution. Understanding the exact distribution may allow appropriate load periodisation and planning for players.
Rafael Oliveira   +5 more
doaj   +1 more source

The effectiveness of the effect of microwave radiation and convection heating on the relaxation of internal stresses in cured polymer composite materials [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика
Background and Objectives: The relaxation of internal stresses in pressed carbon and fiberglass plastics under the action of bending loads after modification by heating in a thermal chamber and exposure to a microwave electromagnetic field has been ...
Zlobina, Irina V.   +2 more
doaj   +1 more source

The effect of pitch size manipulation during small sided-games performed by different age category football players: a pilot study [PDF]

open access: yesJournal of Men's Health, 2023
This research aimed to analyse the pitch size manipulation effect on internal and external load and to study the age effect on the studied variables in different small-sided games (SSGs) formats. Male U-12 (n = 8), U-15 (n = 8) youth football players,
Mário C. Espada   +8 more
doaj   +1 more source

Dynamics of an inchworm nano-walker [PDF]

open access: yes, 2006
An inchworm processive mechanism is proposed to explain the motion of dimeric molecular motors such as kinesin. We present here preliminary results for this mechanism focusing on observables like mean velocity, coupling ratio and efficiency versus ATP ...
A. Ciudad   +11 more
core   +3 more sources

Most Demanding Passages in Elite Futsal: An Isolated or a Repeat Situation?

open access: yesApunts: Educación Física y Deportes, 2020
The main purpose of this research was to examine not only the most demanding passages (MDP) of elite futsal matches through different external load variables: total distance covered (TD), distance covered at high-speed running (HSR), metres covered above
Jordi Illa   +3 more
doaj   +1 more source

Redundant movements in autonomous mobility: experimental and theoretical analysis [PDF]

open access: yes, 2011
<p>Distributed load balancers exhibit thrashing where tasks are repeatedly moved between locations due to incomplete global load information.
Backschat   +32 more
core   +1 more source

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