Accelerometers
Mostrando 13-24 de 41 artigos, teses e dissertações.
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13. The effect of a self-constructed material on children’s physical activity during recess
ABSTRACT OBJECTIVE To analyze whether an intervention supported by free play with a self-constructed material increases the level of physical activity of students during recess. METHODS The participants were 166 children of third to sixth grade, between nine and 12 years old (average = 10.64; SS = 1.13). An experimental project was conducted with pre-test
Rev. Saúde Pública. Publicado em: 26/06/2017
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14. Use of combined method, accelerometer and international physical activity questionnaire, to determinate occurence of physical inactivity in adults
Abstract Aim Evaluate and compare the proportion of PI and associated factors by IPAQ questionnaire, triaxial accelerometry and the combination of both. Adults aged ( 18 years were enrolled (n = 250). Methods We considered PI as < 600 MET-min/wk in the IPAQ total score, < 150 min/wk of moderate-to-vigorous physical activity in 7 days accelerometry, and the
Motriz: rev. educ. fis.. Publicado em: 22/06/2017
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15. The relationship between moderate-to-vigorous physical activity and executive function among individuals with schizophrenia: differences by illness duration
Objective: Schizophrenia is a chronic mental illness characterized by positive and negative symptoms. Cognitive impairment continues to be a core and consistent deficit. Previous studies have shown that physical activity (PA) is positively associated with cognitive performance. Thus, it may play a supportive role in mitigating cognitive impairments among in
Rev. Bras. Psiquiatr.. Publicado em: 30/03/2017
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16. Recent Developments in Damage Identification of Structures Using Data Mining
Abstract Civil structures are usually prone to damage during their service life and it leads them to loss their serviceability and safety. Thus, damage assessment can guarantee the integrity of structures. As a result, a structural damage detection approach including two main components, a set of accelerometers to record the response data and a data mining (
Lat. Am. j. solids struct.. Publicado em: 2017
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17. Concept of a Maneuvering Load Control System and Effect on the Fatigue Life Extension
Abstract This paper presents a methodology for the conceptual design of a Maneuver Load Control system taking into account the airframe flexibility. The system, when switched on, is able to minimize the bending moment augmentation at a wing station near the wing root during an unsteady longitudinal maneuver. The reduction of the incremental wing bending mome
Lat. Am. j. solids struct.. Publicado em: 2016-12
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18. Comparison of In-Flight Measured and Computed Aeroelastic Damping: Modal Identification Procedures and Modeling Approaches
ABSTRACT The Operational Modal Analysis technique is a methodology very often applied for the identification of dynamic systems when the input signal is unknown. The applied methodology is based on a technique to estimate the Frequency Response Functions and extract the modal parameters using only the structural dynamic response data, without assuming the kn
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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19. Quality of life and physical activity levels in outpatients with schizophrenia
Objectives: To assess quality of life (QoL) and physical activity (PA) levels of outpatients with schizophrenia and healthy controls matched for age, gender, body mass index (BMI), hip circumference, waist circumference, and waist-to-hip ratio. Additionally, the present study investigated associations between PA levels, QoL, and anthropometric and behaviora
Rev. Bras. Psiquiatr.. Publicado em: 26/01/2016
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20. Damage Detection Using Measurement Response Data of Beam Structure Subject to a Moving Mass
Abstract The moving load problem is divided into two typical types: moving force and moving mass. The moving mass problem includes the time-varying mass effect. This work considers damage detection of the beam structure subject to a moving load including the inertia effect based on the only measurement data from strain gages and accelerometers without any ba
Lat. Am. j. solids struct.. Publicado em: 2015-12
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21. Modal Shape Analysis Using Thermal Imaging
ABSTRACT: In recent years, advances in aeronautical engineering field include, among others, the development of increasingly lightweight and flexible materials, allowing better performance of systems in applications such as Unmanned Aerial Vehicles, photographic model airplanes, light weight aircraft etc. This progress, however, can cause difficulties in des
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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22. Advances and perspectives of mechanomyography
INTRODUCTION: The evaluation of muscular tissue condition can be accomplished with mechanomyography (MMG), a technique that registers intramuscular mechanical waves produced during a fiber's contraction and stretching that are sensed or interfaced on the skin surface. OBJECTIVE: Considering the scope of MMG measurements and recent advances involving the tech
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-12
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23. FLEXIBLE RISERS MONITORING TECHNIQUE BASED ON VIBRATION MEASUREMENTS / MONITORAMENTO DE RISERS FLEXÍVEIS ATRAVÉS DE TÉCNICA BASEADA EM VIBRAÇÕES
The main failure in flexible risers is the disruption of the wires from the tensile armor layer. Experience has shown that this class of damage occurs primarily near to the top riser connector. The breaking of the wires occurs gradually and may be caused by different processes as corrosion by inflow of fluid in the annular space, excessive wear associated wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2012
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24. Experimental vibration analysis for a 3D scaled model of a three-floor steel structure
In this paper we present an experimental study of a three dimensional physical model of a three-floor structure subjected to forced vibrations by imposing displacements in its support. The aim of this work is to analyze the behavior of the building when a dynamic vibration absorber (DVA) is acting. An analytic simplified analysis and a numerical study are de
Lat. Am. j. solids struct.. Publicado em: 2012-10