Search results for "Human factors"
showing 10 items of 795 documents
Physical Education Teachers’ Perceived Sexual and Physical Violence and Work-related Stress
2020
This study investigated the relationships between sexual (verbal and non-verbal sexual harassment) and physical violence against physical education (PE) teachers and work-related stress. Participants were 175 (females 122, males 53) Finnish PE teachers aged between 27 and 62 years. The findings showed that 1) higher perceived physical violence was positively associated with higher perceived non-verbal sexual harassment and work-related stress; 2) teachers with a sport science degree perceived higher work-related stress mediated by physical violence than other teachers; 3) longer-serving PE teachers reported lower verbal sexual harassment than teachers with less teaching experience; and 4) f…
The testosterone/cortisol ratio moderates the proneness to anger expression in antisocial and borderline intimate partner violence perpetrators
2015
AbstractSeveral studies have provided evidence that antisocial, borderline and narcissistic personality traits of intimate partner violence (IPV) perpetrators significantly increase proneness to violence. In addition, an imbalance between testosterone (T) and cortisol (C) levels has been observed in this population, making individuals prone to violence. We aimed to establish whether IPV perpetrators differ in personality traits, T/C ratio and anger expression from controls, and also to examine the moderating role of the T/C ratio in the relationship between personality traits and anger expression. The sample consisted of 16 IPV perpetrators and 20 controls. T/C ratio was obtained as the quo…
Genetic and environmental sources of continuity and change in teacher-rated aggression during early adolescence
2006
Genetic and environmental sources of continuity and change in aggression were studied in a sample of 1,041 twin pairs (364 monozygotic; 348 same-sex dizygotic; and 329 opposite-sex dizygotic) as part of an ongoing, population-based Finnish twin-family study. At ages 12 and 14, the twins' aggression was assessed by their classroom teachers, using a rating form of the Multidimensional Peer Nomination Inventory. Genetic and environmental sources of continuity and change were studied by fitting a longitudinal bivariate Cholesky decomposition model. Longitudinal model-fitting results indicated that both genetic and environmental factors influenced continuity in aggression during this 2-year peri…
Hätätilanteiden äänihavainnot ja toimintakyky : musiikinpsykologinen tarkastelu äänien merkityksestä osana tilannetietoisuuden ylläpitämistä ja tunte…
2016
Hätätilanteiden äänihavainnot ja toimintakyky on monitieteinen tutkimuskokonaisuus, jolla vastataan kysymyksiin siitä, miten ääni-informaation tilannetietoisuutta ylläpitävää roolia tulkitaan onnettomuustutkintaselostuksissa ja miten äänien synnyttämät kokemukset vaikuttavat toimintakykyyn. Tutkimuksen aineistoa ovat Onnettomuustutkintakeskuksen vesiliikenneonnettomuuksien tutkintaselostukset kymmenen vuoden ajalta, tutkimuskeskus Merikotkan internet-sivujen kautta tehdyn kyselyn vastaukset sekä merenkulun turvallisuuskoulutuskeskus Meriturvassa toteutetut haastattelut. Tutkimuksessa hyödynnettiin laadullista analyysia ja narratiivista tutkimusperinnettä sekä sovellettiin onnistuneesti eri …
Ergonomic Comparison of a Sit-Stand Workstation With a Traditional Workstation in Visual Display Unit Work
2013
Purpose: To compare ergonomics of an electrically adjustable sit-stand workstation with a traditional workstation in video display unit (VDU) work. Methods: Twelve female workers (aged 27-53 years) participated in this experimental study. Electromyography, wrist postures, subjective assessments, and productivity were used to make the ergonomic comparison. Results: The muscle activity of the right trapezius (p=0.01) and left wrist extensors (p=0.02), extension of the right (p=0.05) and left (p=0.002) wrist, and perceived strain of the arms (p=0.05) were lower and productivity was better (p=0.02) when the workers used a low-sitting, high-sitting, or standing posture at the sit-stand workstati…
Designing for Positive User Experience in Work Contexts: Experience Categories and their Applications
2018
Experience categories describe repeatedly occurring qualities of positive experiences that can be used for the analysis and generation of new/further/more positive experiences. This paper describes experience categories for the workplace. Based on 345 reports of positive user experiences in the workplace, we identified 17 experience categories through qualitative content analysis and describe their necessary and optional attributes. We believe that experience categories can support analysis and design activities for the work place in three ways: (a) using the questions derived from experience interviews to analyze existing positive experiences in work contexts, (b) explaining the potential …
Factory Workers' Ordinary User Experiences: An Overlooked Perspective
2018
Experiences with technology often are described as exciting and outstanding, for instance, in relation to novel technologies at home or at work. In this article, we aim to complement this perspective by emphasizing people’s mundane and ordinary experiences with technology, that is, unremarkable experiences happening in the background of people’s attention. Based on our investigations of user experience in a semiconductor factory, we show how such ordinary experiences are substantial in workers’ everyday interactions with technology, which are mainly shaped by repetitive activities and routines. However, current conceptions of user experience seem to overlook those mundane experiences and ho…
A Nonlinear Control of Synchronous Reluctance Motors (SynRM) Based on Feedback Linearization Considering the Self and Cross-Saturation Effects
2019
This paper proposes a nonlinear controller based on feedback linearization for Synchronous Reluctance Motors (SynRM) drives that takes into consideration the self and cross-saturation effects. Such control technique permits the dynamics of both the speed and flux loops to be maintained constant independently from the load and the saturation of the iron core. The proposed technique has been tested experimentally on a suitably developed test set-up.
Digital solutions transform the forest-based bioeconomy into a digital platform industry : a suggestion for a disruptive business model in the digita…
2018
With the notion that the transformation of the forest-based bioeconomy in recent years provides insightful suggestions not only on the bioeconomy, but on business innovation, this paper conducts an empirical analysis of the transformation and attempts to extract suggestions for a digital-solution-driven, disruptive business model in the digital economy. Notwithstanding the potential broad cross-sectoral benefits, the natural environment, locality constraints, and incessant challenge of distance have impeded the balanced development of the bioeconomy. However, driven by digital solutions, the bioeconomy has taken big steps forward in recent years. Digitalization has enabled real-time, end-to…
Features of W production in p-p, p-Pb and Pb-Pb collisions
2017
We consider the production of inclusive W bosons in variety of high-energy hadronic collisions: p--p, p--$\overline{\rm p}$, p--Pb, and Pb--Pb. In particular, we focus on the resulting distributions of charged leptons from W decay that can be measured with relatively low backgrounds. The leading-order expressions within the collinearly factorized QCD indicate that the center-of-mass energy dependence at forward/backward rapidities should be well approximated by a simple power law. The scaling exponent is related to the small-$x$ behaviour of the quark distributions, which is largely driven by the parton evolution. An interesting consequence is the simple scaling law for the lepton charge as…