Search results for "Human Factors"

Simple and Flexible Power Loss Minimizer With Low-Cost MCU Implementation for High-Efficiency Three-Phase Induction Motor Drives

2021

This paper presents a simple, practical and low-cost implementation of a power losses minimization algorithm for three-phase induction motors taking also into account both iron core losses and magnetic saturation. The algorithm evaluates, in real-time, the optimal direct axis magnetizing flux component for efficiency enhancement of the drive. A further advantage of the proposed technique is represented by a flexible and low-cost implementation by means of an ATMEL ATSAM3X8E microcontroller. The power loss minimization algorithm is tested preliminarily by means of several simulations, then, experimentally validated by applying the proposed control strategy on a 5.5 kW Field Oriented Control …

Technology management, networking positions and work/life boundaries among working adult students

2021

In this digitalised world, crossing boundaries between life domains is becoming increasingly easy. We are constantly faced with the need to define whether we are online or offline, and technology management is now an integral part of daily life. Technology management, which is affected by the individual's networking position, has different components: connectivity management, online self-presentation and privacy management. The objective of this study is to explore technology management strategies among working adult students. The study identifies three networking positions: socio-affective enthusiasts, context-contingent pragmatists and pragmatic avoiders. These three groups have specific …

A questionnaire to assess parental perception of barriers towards active commuting to school (PABACS): Reliability and validity

2019

Abstract Introduction Parental barriers are a key factor to determine physical activity behaviors, such as active commuting to school in young people. The purpose of this study was to test the reliability and validity of a questionnaire which addresses parental barriers towards active commuting to school. Methods This paper describes the development, following the Delphi method, and the validation of a Likert-scale questionnaire of 23 items (Parental Perception of Barriers towards Active Commuting to School (PABACS)) designed to determine the main parental barriers. These barriers are categorized into 3 scales (general, walking, and cycling barriers) and the overall questionnaire. A total o…

Concurrent and predictive validity of self-reported aggressiveness

1981

MAVIE-Lab Sports: a mHealth for Injury Prevention and Risk Management in Sport

2018

International audience; Smart-phones technology and the development of mHealth (Mobile Health) applications offer an opportunity to design intervention tools to influence health behavior changes. The MAVIE-Lab is a mHealth application including a DSS (Desicion Support System) to assist in the personalized evaluation of HLIs (Home, Leisure and Sport Injuries) risk and to promote the adoption of prevention measures. MAVIE-Lab Sports will be the first module of the mobile application. The purpose of this PhD project is to improve a particular module of MAVIE-Lab, devoted to sports (MAVIE-Lab Sports), in different aspects: statistical modeling, design and ergonomics. It also aims to evaluate sy…

Co-design of a Virtual Training Tool with Emergency Management Stakeholders for Extreme Weather Response

2018

Emergency services usually prepare for the most frequent or predictable types of disasters, such as fires. However, preparation for complex, unpredictable disaster scenarios is infrequent, probably because of high resource demand and difficulty of covering dynamic training needs of multiple stakeholders. The use of serious game techniques as the core of simulated or virtual training tools opens for new ways of training and learning in emergency and crisis scenarios. However, the number of virtual training tools customized to specific disaster or crisis scenario that address needs of diverse user groups is limited. Existing tools are often tailored with a particular geographical setting and …

The Integrated Migrant worker Safety Training Evaluation Model: IMSTEM

2021

Abstract This paper presents the development of the IMSTEM (Integrated Migrant worker Safety Training Evaluation Model), which aims to provide guidance on how to evaluate the transfer of safety training of migrant workers. Addressing the lack of rigorous safety training evaluation frameworks, the IMSTEM, using a mixed methods, multi-source approach, covers the deficiencies of previous models. The IMSTEM has its foundations in three main sources: a) the integration of safety training literature in relation to migrant workers; b) the theoretical framework of realist evaluation, which enables evaluators to understand what works for whom in which circumstances; and c) the integration of the tra…

Ergonomic Indicators and Physical Workload Risks in Food Production and Possibilities for Risk Prevention

2021

The food industry is the most important and largest manufacturing industry in Latvia, producing almost a third of all manufacturing output. Employees in a food production enterprises are exposed to a variety of ergonomic risks: monotonous work movements that can be repeated up to 1000 times a day, overloads that exceeds 30 kg in lifting and moving operations, forced working postures, fast work pace. The aim of the study was to identify ergonomic indicators related to physical load for packers in one medium-sized company producing potato starch in Latvia. When summarizing the results of the survey on burden-lifting rates, it should be noted that, in a shift, 30% of packers lift the burden fr…

Post-license Education for Novice Drivers: Evaluation of a Training Programme implemented in Spain

2006

Abstract Introduction This study evaluated the implementation of a second phase training program for novice drivers in Spain, which puts the primary focus of the training on the higher hierarchical levels of driver behavior. Method Two hundred and sixty-three participants took part throughout the study, which was implemented as an experimental design with the test and control groups assessed before and after the one day safety training. Measurement of the impact of the training program focused on the participants' self-evaluation and self-reporting of some driving behavior indicators related to accident risk. Results Data analysis showed a change in the expected direction in the scale relat…

Childhood trauma and substance use underlying psychosis: a systematic review

2020

[EN] Background: Schizophrenia spectrum disorders (SSD) are mental diseases caused by a combination of genetic susceptibility and a number of environmental factors. Among these factors, the role of traumatic events suffered in childhood, as well as that of substance use, have been of particular research interest. Objectives: To conduct a systematic review to clarify whether there is an interaction between childhood trauma and substance use related to the diagnosis or symptoms of SSD. It was also the objective of this review to collate the associations that may exist between the three variables of the study (trauma, substance use and psychosis). Methods: We conducted a systematic search resu…