Search results for " modeling"

Supporting the Sustainable Energy Transition in the Canary Islands: Simulation and Optimization of Multiple Energy System Layouts and Economic Scenar…

2021

The Canary Islands have great potential for the implementation of sustainable energy systems due to its availability of natural resources. The archipelago is not connected to the mainland electricity grid and the current generation system is mainly based on traditional fossil fuel. Therefore, the islands strongly dependent on fuel importations, with high costs due to logistics. Furthermore, due to the inadequate coverage of residential heating and cooling needs, the per capita energy consumption is far below the Spanish national average. This occurrence has inspired an intense debate on the current development model of the Canary Archipelago, which has led to the implementation of actions a…

Developmental trajectories of school burnout: Evidence from two longitudinal studies

2014

Abstract To examine school burnout trajectories, in Study 1, 15-year-old adolescents ( N  = 614) completed the School Burnout Inventory twice during their final term of comprehensive school and twice after the transition to upper secondary high school or vocational school. In Study 2, school burnout in 17-year-old adolescents was measured twice annually ( N  = 575) during their upper secondary education. In Study 1, growth mixture modeling for school burnout yielded a four-latent-group solution: 60% of the adolescents showed a low and stable level of school burnout, 29% increasing burnout, 3% strongly increasing burnout and 8% high-decreasing school burnout. In Study 2, we identified two la…

Datorzinātne un informācijas tehnoloģijas: Datu bāzes un Informācijas sistēmas

2010

Modeling Transit Flow Through Port Gates and Connecting Channel in Baltic Sea—Liepaja Port—Liepaja Lake System

2021

This study investigates a water transport features by extending Copernicus Marine Environment Service (CMEMS) to the Liepaja coast-port-channel-lake system with a two-way nested model. The Liepaja lake and Liepaja port are connected by Trade channel. The Liepaja port has three gates—the openings in wave breakers connecting the port aquatory with the Baltic sea. Each of gates has a corresponding dredged channel for securing the navigation. A hydrodynamic model is set up to study the flow and water level in this system. The area of the port gates, port and Trade channel are resolved by 33 m grid. The model results are verified against currents and sea level observations inside/outside port, T…

3D structural modeling and restoration of the Apennine-Maghrebian chain in Sicily: Application for non-cylindrical fold-and-thrust belts

2019

International audience; Thirteen seismic reflection profiles and field observations have been used to build a three-dimensional watertight geological model of the sub-surface architecture of the Trapanese carbonate platform unit of the Apennine-Maghrebian chain in the Mt. Kumeta and Mt. Rocca Busambra (NW Sicily, Italy). Either a single step or a two-step thrust-fault deformation model is acceptable on the basis of seismic interpretation but the integration of 3D model reconstruction and 3D geomechanical restoration, validates only the scenario with a single stage of deformation.The 3D model highlights along strike variations of the structural style for the Trapanese unit where pre-existing…

Mothers' parenting stress and adolescents' emotional separation: The role of youngsters' self orientation

2015

The study examined the association among mothers’ parenting stress, adolescents’ emotional separation and self-orientation toward connectedness. Participants were 194 Italian adolescents, aged from 15 to 19 years (mean age = 17.39, SD = 1.18), and their mothers, aged from 33 to 64 years (mean age = 44.35, SD = 5.40). General findings showed that adolescents’ emotional separation may not necessarily be associated with their mothers’ parenting stress, but both of these variables may be related to adolescents’ personal characteristics, which may contribute to define parent-child relationship. Particularly, adolescents’ orientation towards a connected self was associated negatively with emotion…

The role of perceived autonomy support in predicting university students’ academic success mediated by academic self-efficacy and school engagement

2019

This research analysed relationships between perceived teachers’ autonomy support and academic success, with self-efficacy and school engagement acting as mediators. This was a survey of 870 studen...

Career goal-related success expectations across two educational transitions: A seven-year longitudinal study

2013

The purpose of this seven-year longitudinal study was to examine the trajectories of adolescents' career goal-related success expectations during two educational transitions. Altogether 850 (48% female, M Age = 16) participants reported their success expectations for their career-related goals, first in the last year of comprehensive school and four times during the following seven years. Overall, the success expectations showed a significant increase. However, there was considerable heterogeneity in the development of these expectations. Growth Mixture Modeling showed that four trajectories fitted the data best: high-increasing (78%), low-increasing (9%), decreasing (6%) and U-shaped (7%).…

Grit, Self-Efficacy, Motivation and the Readiness to Change Index Toward Exercise in the Adult Population.

2021

This study examined the relationships between grit personality, self-efficacy, motivation (autonomous, controlled, and amotivation), and the readiness to change index toward exercise. Participants were 391 adults aged between 18 and 64 years old (M= 31.16;SD= 12.45) from Hermosillo, Sonora (Mexico) who completed questionnaires (i.e., the Grit Personality Scale, the Exercise Self-Efficacy Questionnaire, the Treatment Self-Regulation Questionnaire and the Stages of Change Questionnaire for Physical Activity) measuring the variables of interest. The reliability of the instruments was tested using Cronbach's alpha, whereas confirmatory factor analyses were performed for each instrument separate…

Conflicto familia-trabajo, autoeficacia y cansancio emocional: un análisis de los efectos longitudinales

2015

A partir del modelo revisado Demandas-Recursos Laborales (2008) este artículo pone a prueba dos objetivos: primero, analizar la relación entre el conflicto trabajo-familia y el agotamiento emocional a través del tiempo y, segundo, identificar el papel de la autoeficacia profesional en esta relación. Se trata deun estudio longitudinal con dos recogidas de datos separados por un año en una muestra de militaresespañoles (n = 242). Se ponen a prueba tres modelos sobre la relación longitudinal entre el conflicto trabajo-familia y el cansancio emocional: el modelo causal normal, el modelo causal reverso y el modelo causal recíproco. A su vez, para probar el papel de la eficacia profesional en la …