Search results for "motive"

Adicción al cibersexo en función de la orientación sexual: prevalencia y predictores

2020

El cibersexo, una práctica sexual generalizada en la sociedad, puede entrañar ciertos beneficios, aunque también conlleva riesgos (como desarrollar una adicción). Dado que el colectivo LGTBI (Lesbianas, gays, transexuales, bisexuales e intersexuales) lo consume más frecuentemente, el riesgo de adicción también podría ser mayor. Este estudio pretende analizar si la orientación sexual aumentaba el riesgo de consumo adictivo de cibersexo, y si la preferencia por determinadas Actividades Sexuales Online (ASOs) y las motivaciones para su realización explicaban este incremento. A tal fin, 553 personas de entre 18-40 años (54.2% hombres; 36.2% heterosexuales, 36.2% bisexuales, 27.7% homosexuales) …

Conductas sexuales online y sus motivaciones: Una aproximación desde la diversidad sexual

2020

El uso de Internet con objetivos sexuales (cibersexo) es una actividad cada vez más generalizada en todos los sectores de la población. Sin embargo, el modo en el que se realiza (frecuencia, tipos de actividad sexual online –ASO–, motivaciones, etc.) puede cambiar en función de características como la orientación sexual. Cuando el hecho de sentir atracción sexual hacia personas del mismo sexo suponía mayor rechazo y estigmatización que en la actualidad, el cibersexo constituía un espacio seguro donde experimentar con la sexualidad; así, era fácil comprender que su consumo entre personas homosexuales y bisexuales fuera superior. Actualmente, su empleo como espacio seguro parece quedar en seg…

A General and Accurate Measurement Procedure for the Detection of Power Losses Variations in Permanent Magnet Synchronous Motor Drives

2020

The research of innovative solutions to improve the efficiency of electric drives is of considerable interest to challenges related to energy savings and sustainable development. In order to successfully validate the adoption of new and innovative software or hardware solutions in the field of electric drives, accurate measurement procedures for either efficiency or power losses are needed. Moreover, high accuracy and expensive measurement equipment are required to satisfy international standard prescriptions. In this scenario, this paper describes an accurate measurement procedure, which is independent of the accuracy of the adopted instrumentation, for the power losses variations involved…

Energy Management of a Hybrid Photovoltaic-Wind System with Battery Storage: A Case Report

2019

This work presents a case report related to the management and the monitoring of a hybrid photovoltaic-wind system with battery energy storage, installed at the administrative offices building of the municipality of Valderice (Italy) within the framework of the Italy-Tunisia ENPI cooperation project Le Développement Durable Dans la Production Energétique Dans le Territoire (DE.DU.ENER.T.). The paper describes the hybrid system and briefly reports the monitoring data for a whole year, comparing the real production with the expected one and evaluating some performance indexes of the system. The performance indexes are very simple and have been defined only with the purpose of sh…

Estimating Sway Angle of Pendulum System Using Hybrid State Observer Incorporating Continuous and Discrete Sensing Signals

2021

An experimental investigation on two different methods for swirl induction in a multivalve engine

2005

This paper describes an experimental investigation aimed at comparing the swirl effect induced by unbalancing the mass flow through the two intake ports of a multivalve engine head using two different methods: the first one reduced the curtain area of one of the intake valves [different lifts (DL) method]; the second one adopted a sluice-gate-shaped valve, installed upstream of the intake valves [swirl control valve (SCV) method] in order to cause a pressure drop. A steady-flow test rig (equipped with instrumentation for the discharge coefficient and swirl intensity measurement) was realized in order to compare and evaluate the results of both methods and determine their respective validit…

Different drinking motives, different adverse consequences? Evidence among adolescents from 10 European countries

2017

INTRODUCTION AND AIM: This study, which builds on previous research demonstrating that drinking motives are associated with adverse consequences, investigates the associations between drinking motives and non-alcohol-attributed adverse consequences and disentangles alcohol-related and direct effects. DESIGN AND METHOD: On the basis of a sample of 22 841 alcohol-using 13- to 16-year-olds (50.6% female) from Belgium, Denmark, Estonia, Finland, Ireland, Portugal, Scotland, Slovakia, Switzerland and Wales, structural equation models were used to estimate direct and indirect effects. Additionally, differences across countries were tested in a multigroup analysis. RESULTS: The indirect effect (vi…

Impacts of COVID-19 and pandemic control measures on public transport ridership in European urban areas – The cases of Vienna, Innsbruck, Oslo, and A…

2021

The study uses the case of two regions with small and medium sized cities (Agder in Norway and the greater Innsbruck area in Austria) and two European capitals, Vienna and Oslo, to showcase the impact of the COVID-19 pandemic on public transport ridership in northern and central Europe. The comprehensive timeline of actions taken by governments and public transport providers in Austria and Norway, and their impact on public transport ridership in the first and second waves of the pandemic form the basis of a descriptive study. Comparing the data, a strong negative impact on the public transport patronage in the first wave of the pandemic was found, despite a comparable low number of cases p…

Online gaming and prolonged self-isolation: evidence from Italian gamers during the COVID-19 outbreak

2021

Objective: The self-isolation measures employed during the COVID-19 pandemic made it difficult for basic needs to be met, thus increasing emotional distress. It has been suggested that socially meaningful online gaming buffered emotional distress during the lockdown. This study aimed to test the protective effect of online gaming during the lockdown and to investigate the differences between highly involved gamers (those who play videogames intensely without adverse consequences) and problematic gamers in this regard. Method: Capitalizing on a data collection that started before the pandemic, we adopted a cross-sectional between-groups study design in which gaming patterns, gaming-related v…

Analysis, design, and evaluation of a high frequency inductor to reduce manufacturing cost, and improve the efficiency of a PV inverter

2013

Photovoltaic inverters are the major functional units of the photovoltaic systems. Therefore, efficiency and cost are vitally important in the design, and operation of the PV system. Magnetic components are the bulkiest component and highly affect the efficiency of the galvanically isolated PV inverter and design of such component generally involves a compromise between the reduction of core loss at the expense of increased winding loss or vice versa. The loss characteristics of the magnetic material itself present a fundamental limitation on core loss reduction, implying that the intrinsic reduction of core loss density depends on magnetic material improvements. Hence, the essential tradeo…