Search results for "conditions"
showing 10 items of 891 documents
External sustainability in Spanish economy: bubbles and crises, 1970–2020
2023
We address the issue of the sustainability Spain’s exter-nal debt, using data for the period 1970–2020. To detect episodes of potentially explosive behavior of the Spanish net foreign assets over GDP ratio and the current account balance over GDP ratio, as well as episodes of external adjustments over this long period, we employ a recursive unit root test approach. Our empirical analysis leads us to conclude that there is some evidence of bubbles in the ratio between Spanish net foreign assets and the GDP. In contrast, the evidence that the ratio between the Spanish current account balance and the GDP had explosive subperiods is very weak. The episode of explosive behavior identified in the…
Finite element approximation for a div-rot system with mixed boundary conditions in non-smooth plane domains
1984
The authors examine a finite element method for the numerical approximation of the solution to a div-rot system with mixed boundary conditions in bounded plane domains with piecewise smooth boundary. The solvability of the system both in an infinite and finite dimensional formulation is proved. Piecewise linear element fields with pointwise boundary conditions are used and their approximation properties are studied. Numerical examples indicating the accuracy of the method are given. peerReviewed
A fast Fourier transform based direct solver for the Helmholtz problem
2018
This article is devoted to the efficient numerical solution of the Helmholtz equation in a two‐ or three‐dimensional (2D or 3D) rectangular domain with an absorbing boundary condition (ABC). The Helmholtz problem is discretized by standard bilinear and trilinear finite elements on an orthogonal mesh yielding a separable system of linear equations. The main key to high performance is to employ the fast Fourier transform (FFT) within a fast direct solver to solve the large separable systems. The computational complexity of the proposed FFT‐based direct solver is O(N log N) operations. Numerical results for both 2D and 3D problems are presented confirming the efficiency of the method discussed…
A Logic Fuzzy Model for Evaluation of the Railway Station’s Practice Capacity in Safety Operating Conditions
2013
Abstract The practice capacity of a railway junction depends, in addition to the effective operation’s conditions, by the potential risk factors related to the design plan of the railway station. With the aim of an approach based on the “fuzzy sets” it is possible to determine the numeric value of the practice capacity by the logic - qualitative relations between the features of the railway junction and the potential risk factors. This methodology permits to try out the absolute value of a suitable vector β, (less then the unit) for the utilization of the theoretic capacity in conditions of maximum reliability of the system related to the aspect of safety (technique “fail safe”).
Economic Crisis, worker’s health and social protection
2023
Objective The aim of this paper is to analyse the individual and contextual factorsthat could affect worker’s mental and physical health during economic downturn.This paper fills the gap in the literature that addresses the link between crisis,physical and mental health.Methods Bivariate, machine learning method and multi-level regression analysiswere performed to explore the determinants of European Worker’s mental andphysical health. Machine learning method is dedicated to the predictors ofmental and physical health problems based on a classification algorithm,random forest model. Since the respondents of our data come from differentEuropean countries, the database has a hierarchical form…
Hôtels et dépendances
2011
Cet article présente une analyse de la qualité de l’emploi des femmes de chambre dans divers pays d’Europe sous le double aspect des contraintes patronales de gestion de main-d’œuvre, et de la construction des trajectoires professionnelles des salariées. Vulnérables, peu qualifiées et peu valorisées, souvent d’origine étrangère, la plupart des femmes de chambre sont aisément fidélisées du fait de leur faible employabilité sur le marché du travail. En réalité, elles se trouvent reléguées dans une spirale qui lie flexibilité, rémunération médiocre, précarité plurielle, renforcée par les pratiques de dépendance des hôteliers. This article addresses the issue of job quality for housekeepers in …
Practices in research, surveillance and control of neglected tropical diseases by One Health approaches: A survey targeting scientists from French-sp…
2021
One health (OH) approaches have increasingly been used in the last decade in the fight against zoonotic neglected tropical diseases (NTDs). However, descriptions of such collaborations between the human, animal and environmental health sectors are still limited for French-speaking tropical countries. The objective of the current survey was to explore the diversity of OH experiences applied to research, surveillance and control of NTDs by scientists from French-speaking countries, and discuss their constraints and benefits. Six zoonotic NTDs were targeted: echinococcoses, trypanosomiases, leishmaniases, rabies, Taenia solium cysticercosis and leptospiroses. Invitations to fill in an online q…
The common sense model of illness self-regulation : a conceptual review and proposed extended model
2021
The common sense model of illness self-regulation outlines the dynamic processes by which individuals perceive, interpret, and respond to health threats and illness-related information. An extended version of the model is proposed, which specifies additional constructs and processes to explain how lay perceptions of health threats impact coping responses and health-related outcomes. The extended model provides detail on: (a) the mediating process by which individuals’ illness representations relate to illness outcomes through adoption of coping procedures; (b) how illness representations are activated by presentation of health-threatening stimuli; (c) behavioral and treatment beliefs as det…
Piezoelectric bimorph response with imperfect bonding conditions
2008
The effect of the finite stiffness bonding between the piezoelectric plies of bimorph devices has been investigated. A boundary integral formulation for piezoelasticity, based on a multidomain technique with imperfect interface conditions, has been developed. The imperfect interface conditions between the piezoelectric layers are described in terms of linear relations between the interface tractions, in normal and tangential directions, and the respective discontinuity in displacements. Continuity of the electric potential at the interface is also assumed and an iterative procedure is implemented to avoid interface interference. Numerical analysis has been performed on bimorph configuration…
Conditions of the recognition of the civil status of transexual and transgender people
2018
La ricerca intende dimostrare che in Europa, e in particolare in diversi ordinamenti nazionali come ad esempio quello italiano e quello inglese, sono stati fatti passi in avanti molto significativi nel tentativo di elaborare uno statuto giuridico completo a favore delle persone transessuali e transgender, con una chiara individuazione dei loro diritti e dei loro doveri. L’ordinamento italiano è pervenuto alla conclusione che una combinazione di misure legislative, in piena armonia con le pronunce della Corte Costituzionale e della Corte di Cassazione, era fortemente necessaria per dare origine ad una serie di principii volti a promuovere al più alto rango dei diritti umani fondamentali le a…