Search results for "Vd"
showing 10 items of 7724 documents
Effect of Sex, Body Mass Index and Physical Activity Level on Peak Oxygen Uptake Among 14–19 Years Old Adolescents
2020
The aim was to describe longitudinal trends in peak oxygen uptake (VO2peak) among 14- to 19-year-old adolescents in Norway, and to examine effects of sex, body mass index (BMI), and physical activity (PA) level on VO2peak during adolescence. Of 124 invited students from two lower secondary schools in Norway, 116 eighth-grade students (61 boys and 55 girls; 14 years old at baseline) volunteered to participate. The study has a longitudinal design with 6 yearly repeated measures of body height and mass, VO2peak and PA level. VO2peak allometrically scaled to body mass raised to the power of 0.67 was measured using a walking or running incremental test on a treadmill, whereas PA level was self-r…
Students' self-determined motivation in physical education and intention to be physically active after graduation : the role of perceived competence …
2014
Purpose: This study examined whether high school students' degree of self-determined motivation in school physical education predicted their intentions to be physically active after graduation, and whether perceived physical competence and physical activity identity mediated this hypothesized cross-sectional relationship. Additionally, the possibility of conditional effects of gender on these associations was considered. Method: A cross sectional study involving 1650 high-school students allowed for the examination of indirect effects using a bias-corrected bootstrapping technique. Results: Results showed that self-determination in PE may positively affect adolescents' intentions to be phys…
Nordic Higher Education in Flux: System Evolution and Reform Trajectories
2019
AbstractThis chapter provides a brief description of how the four national systems included in this study—Denmark, Finland, Norway, and Sweden—are currently organised and structured. In doing so, it illuminates several specific features such as the types and sizes of the institutions, enrolment patterns, performance measures, and funding. In addition, the chapter gives a snapshot of how higher education systems have evolved historically by shedding light on policy dynamics from the late 1990s to 2013, the baseline period for the FINNUT comparative study, the research project that provides the basis for this edited volume. This is followed by a section describing the aim, methods, theoretica…
Politiske konsekvenser av sosiale medier : mulige konsekvenser ved bruk av sosiale medier på politisk interesse, politisk deltakelse og samfunnsengas…
2016
Masteroppgave velferdsstudier - Universitetet i Agder 2016 Sosiale medier er et raskt voksende fenomen som har tiltrukket seg millioner av brukere siden begynnelsen av 2000-tallet. Forskningslitteraturen diskuterer om, og på hvilke måter, offentlige rom og borgerlig kultur har endret seg i vår digitale tidsalder. Det er ulike oppfatninger om hvordan sosiale medier påvirker borgerlig kultur og offentlige rom i form av folks interesse og deltakelse i politikk og deres samfunnsengasjement. Det er også ulike oppfatninger om hvordan internett påvirker demokratiers representativitet. Noen mener at sosiale medier gir nye muligheter for demokrati, i form av engasjement og deltakelse i offentlige ro…
Enhanced chain dynamics in loop-sorting-systems by means of layout optimization and a kinematic model of the polygon action
2012
Published version of an article in the journal: Structural and Multidisciplinary Optimization. Also available from the publisher at: http://dx.doi.org/10.1007/s00158-011-0743-7 Poor dynamics owing to polygon action is a known concern in mechanical applications of closed articulated chains. In this paper a kinematic model of the polygon action in large chains of loop-sorting-systems is proposed. Through optimization techniques the chain dynamics is improved by minimizing the polygon action using a parametric model of the track layout as design variables. Three formulations of the kinematic polygon action are tested on an average sized planer tracks layout to find a superior model. Verificati…
Impact of Separator Thickness on Temperature Distribution in Single Cell of Polymer Electrolyte Fuel Cell Operated at Higher Temperature of 90 °C and…
2022
The New Energy and Industry Technology Development Organization (NEDO) road map (Japan, 2017) has proposed that a polymer electrolyte fuel cell (PEFC) system, which operates at a temperature of 90 °C and 100 °C, be applied for stationary and mobility usage, respectively. This study suggests using a thin polymer electrolyte membrane (PEM) and a thin gas diffusion layer (GDL), at the same time, to achieve better power-generation performance, at a higher temperature than usual. The focus of this paper is to clarify the effect of separator thickness on the distribution of temperature at the reaction surface (Treact), with the relative humidity (RH) of the supply gasses and initial operation tem…
On porn censorship and liberal ethics in the UK. Brief notes on the Audiovisual Media Services Regulations 2014
2015
This article deals with the highly criticised Audiovisual Media Services Regulations 2014, which provides that now the British Board of Film Classification (BBFC) regulations apply also to the videos-on-demand (and not only to DVDs).
Oscillation of Second-Order Neutral Differential Equations
2013
Author's version of an article in the journal: Funkcialaj Ekvacioj. Also available from the publisher at: http://www.math.kobe-u.ac.jp/~fe/ We study oscillatory behavior of a class of second-order neutral differential equations relating oscillation of these equations to existence of positive solutions to associated first-order functional differential inequalities. Our assumptions allow applications to differential equations with both delayed and advanced arguments, and not only. New theorems complement and improve a number of results reported in the literature. Two illustrative examples are provided.
«Sykt lykkelig på sosiale medier» : ungdom og sosiale medier i det postmoderne samfunn : hvordan bruker – og fremstiller dagens ungdom seg på sosiale…
2019
Masteroppgave samfunnskunnskap SV505 - Universitetet i Agder 2019 Denne oppgaven omhandler ungdoms bruk av og fremstilling av seg selv på sosiale medier i lys av samtiden, det postmoderne samfunn. Oppgaven tar for seg hvilke medier ungdom bruker, hvordan og hvorfordebruker sosiale medier, samt hvor mye tid de bruker på sosiale medier. Også hvordan unge presenterer og fremstiller seg selv i ulike sosiale medier blir undersøkt. Med utgangpunkt i den såkalte«Generasjon prestasjon» vies ungdoms opplevelse av press og stress på sosiale medier ekstra oppmerksomhet.Oppgaven baserer seg på en empirisk –kvantitativ spørreundersøkelse av til sammen 148 ungdommer i ungdomsskolen og på videregående sko…
Partial Discharges in HVDC Cables - The Effect of the Temperature Gradient During Load Transients
2021
The paper investigates the role of the space charge accumulation phenomena in the inception of Partial Discharges (PD) in a defect within the bulk of the dielectrics of a High Voltage Direct Current (HVDC) cable. It is widespread accepted that the number of PD occurring in an HVDC cable during its lifetime is largely less than that under AC voltage stress. This is essentially due to higher values of the voltage between the conductor and the screen needed to trigger PD under a steady DC voltage than the same value under AC stress. Nevertheless, due to the dependency of the electrical conductivity of the insulation on the electric field and temperature, PD in HVDC cables is strongly influence…