Search results for "motor"
showing 10 items of 3137 documents
Motoristen taitojen ja oppimisvaikeuksien välinen yhteys esikouluikäisillä lapsilla ja liikuntaintervention vaikutus lasten motorisiin taitoihin peru…
2009
Desarrollo de un paradigma de enriquecimiento ambiental y su potenciación mediante agonistas nicotínicos: efectos conductuales en ratones
2014
El paradigma del enriquecimiento ambiental (EE) en roedores se basa en proporcionar elevada estimulación cognitiva, física y social mediante diferentes procedimientos (generalmente un número elevado de animales que se mantienen en cajas grandes que contienen ruedas de actividad, túneles y diferentes tipos de juguetes). El principal objetivo de la presente Tesis Doctoral fue el desarrollo de un modelo de EE y la evaluación de sus efectos conductuales y fisiológicos en ratones con el fin de valorar si dicha manipulación contribuye a prevenir y/o revertir algunos de los efectos adversos que se observan asociados a factores como la edad o la exposición crónica situaciones de estrés social. Adem…
Older Age Increases the Amplitude of Muscle Stretch-Induced Cortical Beta-Band Suppression But Does not Affect Rebound Strength
2020
Healthy aging is associated with deterioration of the sensorimotor system, which impairs balance and somatosensation. However, the exact age-related changes in the cortical processing of sensorimotor integration are unclear. This study investigated primary sensorimotor cortex (SM1) oscillations in the 15–30 Hz beta band at rest and following (involuntary) rapid stretches to the triceps surae muscles (i.e., proprioceptive stimulation) of young and older adults. A custom-built, magnetoencephalography (MEG)-compatible device was used to deliver rapid (190°·s−1) ankle rotations as subjects sat passively in a magnetically-shielded room while MEG recorded their cortical signals. Eleven young (age…
Older Age Increases the Amplitude of Muscle Stretch-Induced Cortical Beta-Band Suppression But Does not Affect Rebound Strength
2020
Healthy aging is associated with deterioration of the sensorimotor system, which impairs balance and somatosensation. However, the exact age-related changes in the cortical processing of sensorimotor integration are unclear. This study investigated primary sensorimotor cortex (SM1) oscillations in the 15–30 Hz beta band at rest and following (involuntary) rapid stretches to the triceps surae muscles (i.e., proprioceptive stimulation) of young and older adults. A custom-built, magnetoencephalography (MEG)-compatible device was used to deliver rapid (190°·s−1) ankle rotations as subjects sat passively in a magnetically-shielded room while MEG recorded their cortical signals. Eleven young (age…
Study of the evolution of terminal differentiation programs using C. elegans serotonergic neurons as a model
2019
Tesis, 407 páginas, figuras y tablas.
Optimization of Delayed-State Kalman-Filter-based Algorithm via Differential Evolution for Sensorless Control of Induction Motors
2010
This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a cla…
Relationship between maxinal lipid oxidation and oxygen uptake in sedentary patients with type 2 diabetes
2011
Single joint exercises do not provide benefits in performance and anthropometric changes in recreational bodybuilders
2020
The purpose of the present study was to compare the changes in anthropometric measures and muscle performance in users and non-users of androgenic anabolic steroids (AAS) performing resistance training (RT) programmes involving only multiple joint (MJ) exercises or a combination of MJ and single joint (SJ) exercises. Thirty recreational bodybuilders were divided into 4 groups: non-AAS users performing only MJ exercises (MJ), non-AAS users performing MJ + SJ (MJ + SJ), AAS users performing only MJ exercises (AAS − MJ) and AAS users performing MJ + SJ exercises (AAS − MJ + SJ). Before and after 8 weeks of training, the participants were tested for 10 repetition maximum (10RM) in different RT …
Effects of physical activity, specific exercise and traumatic brain injury on motor abilities : theoretical and pragmatic assessment
2010
Numerical and Experimental Study of Friction Loss in Hydrostatic Motor
2012
Published version of an article in the journal: Modeling, Identification and Control. Also available from the publisher at: http://dx.doi.org/10.4173/mic.2012.3.2 Open access This paper presents a numerical and experimental study of the losses in a hydrostatic motor principle. The motor is designed so that the structural deflections and lubricating regimes between moving surfaces and, subsequently, the leakage and friction losses, can be controlled during operation. This is done by means of additional pressure volumes that influence the stator deflection. These pressures are referred to as compensation pressures and the main emphasis is on friction or torque loss modeling of the motor as a …