Sistema de reconocimiento de objetos sobre visión foveal mediante realidad virtual

Peer Reviewe

Sistema de reconocimiento de objetos sobre visión foveal mediante realidad virtual

Peer Reviewe

AFL-CIO Legislative Guide: 112th Congress (2011–2012)

The AFL-CIO Legislative Guide for the 112th Congress covers the following issues as they relate to labor and public policy: The Economy Freedom to Form a Union Health Care Retirement Security Core Labor Laws, Labor Standards and Workplace Protections Education, Civil and Human Rights, Fair and Open Elections The Global Econom

On stability assessment using the WalkIT smart rollator.

The presentation focuses on using sensors on a robotized rollator released under open license to assess balance. The system relies uniquely on onboard sensors, i.e. no sensors are attached to users. The method can be used to evaluate users' condition or to proactively reduce fall risk during navigation.PID2021-127221OB-I00 (Proyectos de Generación de Conocimiento 2021) Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

An adaptive scheme for wheelchair navigation collaborative control

In this paper we propose a system where machine and human cooperate at every situation via a reactive emergent behavior, so that the person is always in charge of his/her own motion. Our approach relies on locally evaluating the performance of the human and the wheelchair for each given situation. Then, both their motion commands are weighted according to those efficiencies and combined in a reactive way. This approach benefits from the advantages of typical reactive behaviors to combine different sources of information in a simple, seamless way into an emergent trajectory.Peer ReviewedPostprint (author’s final draft

Cooperative learning in a Engineering Teaching Framework: an introductory experience to Teamworking

Proyecto de Innovación Educativa PIE13-021: Aprendizaje Cooperativo/Colaborativo en el ámbito de la Ingeniería (ACAI)La enseñanza universitaria en el ámbito de la Ingeniería ha estado tradicionalmente orientada al trabajo individual del alumno, lo cual dificulta la adquisición de una de las aptitudes más valoradas en el mercado laboral, como es la competencia de trabajo en grupo. Este trabajo tiene como objetivo fomentar una componente de esta competencia, como es la interacción entre los estudiantes. Para ello se han diseñado y puesto en práctica una serie de actividades docentes en la asignatura “Microcontroladores“, asignatura de 2º curso común a los estudios de Grado en Ingeniería de Sistemas Electrónicos, Sistemas de Telecomunicación, Telemática, Tecnologías de Telecomunicación, y Sonido e Imagen, en la Universidad de Málaga. Asimismo, se ha establecido un conjunto de indicadores que permiten evaluar el grado de consecución de la meta planteada. Los resultados han puesto de manifiesto que la interacción entre los estudiantes se puede fomentar mediante el conjunto de acciones planificadas, aunque las mismas requieren un esfuerzo adicional por parte del profesorado. Finalmente, se han propuesto algunas mejoras en el diseño del procedimiento, para mejorar su eficacia. Este trabajo se enmarca en el proyecto ACAI, cuyo objetivo es implementar un diseño curricular para el desarrollo de la competencia de Trabajo en Grupo. Así, se propone continuar la experiencia aquí presentada fomentando, para los mismos estudiantes, otras componentes de la competencia en asignaturas de 3º y 4º de los grados mencionados.Proyecto de Innovación Educativa PIE13-021, concedido por el Vicerrectorado de Profesorado, Formación, y Coordinación de la Universidad de Málaga

A new collaborative shared control strategy for continuous elder/robot assisted navigation

In nowadays aging society, many people require mobility assistance. Autonomous wheelchairs may provide some help, but they are not supposed to overtake all control on human mobility, as this is reported to lead to loss of residual capabilities and frustration. Instead, persons and wheelchairs are expected to cooperate. Traditionally, shared control hands control from human to robot depending on a triggering event. In this paper, though, we propose a method to allow constant cooperation between humans and robots, so that both have some weight in the emergent navigating behavior. We have tested the proposed method on a robotized Meyra wheelchair at Santa Lucia Hospedale in Rome with several volunteering in-patients presenting different disabilities. Results in indoor environments have been satisfactory both from a quantitative and qualitative point of view.Peer ReviewedPostprint (author’s final draft

Inflammatory biomarkers and brain health indicators in children with overweight and obesity: The ActiveBrains project

INTRODUCTION: Chronic inflammation plays an important role on the pathogenesis of several cardiovascular and metabolic diseases, as well as on brain function and behaviour. The aim of the present study was to examine the associations between inflammatory biomarkers and a wide range of brain health indicators (i.e., academic performance, executive function, behavioural and emotional functioning, and brain volume) in children with overweight/obesity. METHODS: A total of 107 children (10.0 ± 1.1 years, 41% girls) from the ActiveBrains project were included in the analysis. Five inflammatory biomarkers were analysed in plasma: white blood cell (WBC) count, interleukin-6 (IL-6), interleukin-1beta, tumor necrosis factor-alpha (TNF-alpha), and C-reactive protein (CRP). Academic performance was assessed by Woodcock-Munoz Tests of Achievement. Executive function was assessed through the Design Fluency Test for cognitive flexibility, the Stroop test for cognitive inhibition, and the Delayed Non-Match-to-Sample task for working memory. Behavioural and emotional functioning was evaluated through the Behavior Assessment System for Children (BASC) questionnaire. Total and regional brain volume was assessed by magnetic resonance imaging. RESULTS: IL-6 was inversely associated with adaptive skills (beta = -0.228; p = 0.030), while TNF-alpha was related to mathematics (beta = -0.198; p = 0.034). In addition, CRP was positively associated with externalizing (beta = 0.246; p = 0.046) and internalizing problems (beta = 0.234; p = 0.039), as well as the behavioural symptoms index (beta = 0.236; p = 0.047). However, these significant associations disappeared after multiple comparisons correction. Inflammatory biomarkers were not associated with executive function and total brain volumes. Regarding regional brain analyses, WBC was positively associated with gray matter volume in the left middle temporal gyrus (beta = 0.387; p < 0.001, k = 44), and CRP was positively associated with gray matter volume in the right superior temporal gyrus (beta = 0.439; p < 0.001, k = 29). Additionally, when adjusting by total brain volume, CRP was positively associated with gray matter volume in the right supplementary motor cortex (beta = 0.453; p < 0.001, k = 51). Moreover, both, IL-6 (beta = 0.366; p < 0.001, k = 81) and TNF-alpha (beta = 0.368; p < 0.001, k = 62) were positively associated with white matter volume around the right inferior frontal gyrus pars opercularis, while CRP was inversely associated with white matter volume around the left superior frontal gyrus (beta = -0.482; p < 0.001, k = 82). After adjusting by total brain volume, CRP was also inversely associated with white matter volume in 3 additional clusters (beta ranging from -0.473 to -0.404; p < 0.001, k = 87). CONCLUSIONS: Inflammation was slightly associated with brain health (i.e., academic performance, behavioural and emotional functioning and regional brain volume) in children with overweight or obesity. Further larger longitudinal and interventional studies are warranted to elucidate the short-term and long-term effect of systemic low-grade inflammation on children's brain health

Perceived distress in assisted gait with a four-wheeled rollator under stress induction conditions

In assisted ambulation, the user’s psychological comfort has a significant impact not only on acceptability of mobility aids but also on overall gait performance. Specifically, in the case of rollators, negative states such as distress may result in balance loss, inefficient manoeuvres, and an increased risk of falling. This paper presents a pilot study to investigate the effect of distress on rollator assisted navigation. To achieve this goal, a novel test protocol is proposed to assess distress while walking with a rollator, using the Self-Assessment Manikin (SAM) questionnaire. First, the participant completes a standardised visual stress induction test and fills in a SAM questionnaire on the dimensions of arousal and valence, to establish personal benchmarks. Then, they complete a course consisting of four navigation tasks with different levels of difficulty that affect the rollator manoeuvrability, filling in a SAM questionnaire after each task. An experiment including 25 healthy volunteers has been completed. Our preliminary results show that stressors like uneven or sloping surfaces increase perceived stress, whereas the shape of the trajectory does not significantly affect stress. The ultimate purpose of this work is to validate a performance-oriented protocol to investigate the dynamics of stress response in assisted walk and to train automatic stress detection systems.The work was supported by the Ministerio de Ciencia e Innovación [RTI2018-096701-B-C22]; Ministerio de Ciencia, Innovación y Universidades [RTI2018-096701-B-C21 (SAVIA:]; Ministerio de Ciencia, Innovación y Universidades [RTI2018-096701-B-C21]; Universidad de Málaga [E3-PROYECTOS DE PRUEBA DE CONCEPTO (E3/02/18)].Peer ReviewedPostprint (published version

Physical fitness reference standards for preschool children: the PREFIT project

Objectives: Reference values are necessary for classifying children, for health screening, and for early prevention as many non-communicable diseases aggravate during growth and development. While physical fitness reference standards are available in children aged 6 and older, such information is lacking in preschool children. Therefore, the purposes of this study were (1) to provide sex-and age-specific physical fitness reference standards for Spanish preschool children; and (2) to study sex differences across this age period and to characterise fitness performance throughout the preschool period. Design: Cross-sectional. Methods: A total of 3179 preschool children (1678 boys) aged 2.8–6.4 years old from Spain were included in the present study. Physical fitness was measured using the PREFIT battery. Results: Age- and sex-specific percentiles for the physical fitness components are provided. Boys performed better than girls in the cardiorespiratory fitness, muscular strength, and speed-agility tests over the whole preschool period studied and for the different percentiles. In contrast, girls performed slightly better than boys in the balance test. Older children had better performance in all fitness tests than their younger counterparts. Conclusions: Our study provides age- and sex-specific physical fitness reference standards in preschool children allowing interpretation of fitness assessment. Sexual dimorphism in fitness tests exists already at preschool age, and these differences become larger with age. These findings will help health, sport, and school professionals to identify preschool children with a high/very low fitness level, to examine changes in fitness over time, and to analyse those changes obtained due to intervention effects.The PREFIT project takes place thanks to the funding linked to the Ramón y Cajal grant held by FBO (RYC-2011-09011). CC-S is supported by a grant from the Spanish Ministry of Economy and Competitiveness (BES-2014-068829). JRR and FBO are supported by grants from the Spanish Ministry of Science and Innovation (RYC-2010-05957 and RYC-2011-09011, respectively). In addition, this study was further supported by the University of Granada, Plan Propio de Investigación 2016, Excellence actions: Units of Excellence; Unit of Excellence on Exercise and Health (UCEES). Additional funding from the SAMID III network, RETICS, funded by the PNI+D+I 2017-2021 (Spain), ISCIII- Sub-Directorate General for Research Assessment and Promotion, the European Regional Development Fund (ERDF) (Ref. RD16/0022), the EXERNET Research Network on Exercise and Health in Special Populations (DEP2005-00046/ACTI), the University of the Basque Country (GIU14/21), and the University of Zaragoza (JIUZ-2014-BIO-08)