Search results for "traje"

Modelling of non-stationary mobile radio channels using two-dimensional brownian motion processes

2013

The interdisciplinary idea of this paper is to employ a two-dimensional (2D) Brownian motion (BM) process to model non-stationary mobile fading channels. It is assumed that the mobile station (MS) starts moving from a fixed point along a random path in the 2D plane. We model such a moving scenario by a 2D BM process, in which the variance of the process determines the deviation of the MS from its starting point. The propagation area is modelled by a non-centred one-ring scattering model, where the local scatterers are uniformly distributed on a ring centred not necessarily on the MS. The random movement of the MS in the proposed scattering model results in local angles-of-arrival (AOAs) and…

A Trajectory-Driven SIMO mm-Wave Channel Model for a Moving Point Scatterer

2021

In this paper, we propose a trajectory-based three-dimensional (3D) non-stationary channel model for a millimeter wave (mm-Wave) single-input multiple-output (SIMO) system. The proposed channel model is designed to capture the mobility of a moving point scatterer in an indoor environment. We derive the expression of the time-variant (TV) channel transfer function (CTF). We study the TV Doppler characteristics of the channel, such as the TV Doppler power spectrum and the TV mean Doppler shift. To validate the proposed channel model, we performed a measurement campaign in an indoor environment using a software defined radar operating at 24 GHz. As a moving object, we consider a single swingin…

Bandosidades nobiliarias en Valencia durante la época foral

1985

Un droit à géométrie variable

1995

International audience; Les dernières statistiques le confirment : ce n'est pas dans les entreprises où la formation est la plus développée que les efforts accomplis sont le mieux rémunérés. Reste que mieux vaut toujours être jeune, qualifié, de sexe masculin et employé dans une grande entreprise de haute technologie pour pouvoir bénéficier d'actions de formation.

Structure du marché du travail, formation continue et trajectoires professionnelles : l'exemple du congé individuel de formation

1992

séminaire coorganisé par le Centre d'études et de recherches sur les qualifications, CEREQ et le Laboratoire d'analyse secondaire et de méthodes appliquées à la sociologie, LASMAS] \par "Mobilité professionnelle et cheminement de longue durée", janvier 1991 - mars 1992; International audience

Robust coordinated control algorithm for multiple marine vessels with external disturbances

2013

Published version of an article in the journal: Mathematical Problems in Engineering. Also available from the publisher at: http://dx.doi.org/10.1155/2013/597195 Open Access The problem of coordinated control for multiple marine vessels in the presence of external disturbances is considered in this paper. A robust coordinated control algorithm is proposed for multiple marine vessels. The proposed robust coordinated control algorithm is divided into two parts. The first part develops an extended state observer to estimate the disturbances of marine vessels. The second part presents a robust coordinated control algorithm based on the output of the extended state observer. Furthermore, the rob…

Exploring the Heterogeneity and Trajectories of Positive Functioning Variables, Emotional Distress, and Post-traumatic Growth During Strict Confineme…

2022

Abstract  COVID-19 pandemic-related confinement may be a fruitful opportunity to use individual resources to deal with it or experience psychological functioning changes. This study aimed to analyze the evolution of different psychological variables during the first coronavirus wave to identify the different psychological response clusters, as well as to keep a follow-up on the changes among these clusters. The sample included 459 Spanish residents (77.8% female, Mage = 35.21 years, SDage = 13.00). Participants completed several online self-reported questionnaires to assess positive functioning variables (MLQ, Steger et al. in J Loss Trauma 13(6):511–527, 2006. 10.1080/15325020802173660; GQ…

Understanding the effects of Covid-19 through a life course lens

2020

Available online 22 July 2020. Other co-authors: ANTONUCCI, T. C., DYKSTRA, P. A., HECKHAUSEN, J., KUH, D., MAYER, K. U., MOEN, P., MORTIMER, J. T., MULDER, C. H., SMEEDING, T. M., VAN DER LIPPE, T., HAGESTAD, G. O., KOHLI, Martin, LEVY, R., SCHOON, I., & THOMSON, E. The Covid-19 pandemic is shaking fundamental assumptions about the human life course in societies around the world. In this essay, we draw on our collective expertise to illustrate how a life course perspective can make critical contributions to understanding the pandemic’s effects on individuals, families, and populations. We explore the pandemic’s implications for the organization and experience of life transitions and trajec…

La importància de la vinculació educativa com a prevenció de la deliqüència juvenil

2011

L’accés al sistema educatiu i la trajectòria en aquest sistema són dos dels elements principals que configuren els factors de risc o de protecció en una societat precària i dualitzada com l’actual. La bibliografia científica considera fonamental analitzar la relació entre la trajectòria educativa i la vinculació amb la delinqüència juvenil. En aquesta investigació s’aprofundeix en la relació que hi ha entre el procés educatiu i la trajectòria delinqüencial dels adolescents en conflicte amb la llei. La nostra perspectiva parteix de les hipòtesis següents: a) el fracàs educatiu està relacionat amb la situació de vulnerabilitat i exclusió prèvia de les unitats familiars, com s’ha posat de mani…

Adolescentes y drogas : su relación con la delincuencia

2016

Esta investigación describe la relación con las drogas en una muestra de 286 Adolescentes en Conflicto con la Ley de la ciudad de Valencia (España). Tiene por objeto analizar la relación entre trayectoria delictiva y consumo de drogas. Los resultados informan que, a mayor incidencia delictiva, mayor dependencia. En cuanto a patrones de consumo por tipo de sustancia, el cannabis se asocia a trayectorias delictivas iniciales, y la cocaína, a trayectorias consolidadas. El consumo se produce en escenarios habituales diurnos y se extiende a otros de ocio nocturno, y particularmente forma parte de la trayectoria consolidada en la vida cotidiana de los adolescentes en conflicto con la ley. This st…