Search results for "Inequality"
showing 10 items of 1076 documents
Reconstruir la identidad de aprendiz en la FP. El efecto de las experiencias escolares y las culturas de enseñanza en la construcción identitaria
2020
La Formación Profesional en España sigue siendo una vía formativa escasamente desarrollada y prestigiada, a pesar de los importantes avances que se han registrado en los últimos años. El Grado Medio, en particular, presenta unos niveles de oferta y demanda muy inferiores a los de Bachillerato. Además, en términos globales, escolariza a un porcentaje mucho mayor de jóvenes de bajo estatus socioeconómico y cultural y con trayectorias de fracaso o desvinculación escolar durante la ESO. El objetivo de este artículo es analizar cómo construyen su identidad de aprendices los alumnos de FP en base a sus experiencias escolares y formativas -tanto anteriores como presentes- y a sus proyecciones de f…
Sharp estimates and saturation phenomena for a nonlocal eigenvalue problem
2011
Abstract We determine the shape which minimizes, among domains with given measure, the first eigenvalue of a nonlocal operator consisting of a perturbation of the standard Dirichlet Laplacian by an integral of the unknown function. We show that this problem displays a saturation behaviour in that the corresponding value of the minimal eigenvalue increases with the weight affecting the average up to a (finite) critical value of this weight, and then remains constant. This critical point corresponds to a transition between optimal shapes, from one ball as in the Faber–Krahn inequality to two equal balls.
Steady-state radiation heat transfer problem
1996
In Section 8.2, we shall see that the steady-state radiative heat transfer problem can be transformed to minimization of a smooth nonquadratic functional J over a convex and closed subset of a Banach space V. To this end we firstly shortly recall some basic definitions concerning differentiability of J, because these sometimes differ in the literature.
2017
This article is about the issues of self-assessment of inequalities in standards of living in rural areas in Poland. The goal of the research is to identify the differentiation of subjective assessments of the standard of living made by rural households. Subjective feelings of the surveyed households were compared with selected objective characteristics of their material situation. The most representative indicator of the households’ financial situation there was an assumed level of consumer spending. A comparative analysis of the self assessment was conducted, the consumer spending and the selected characteristics of households belonging to various socio-economic groups. The econometric an…
COVID-19, Gender Housework Division and Municipality Size in Spain
2022
The COVID-19 health crisis brought with it an increase in the workload on family members due to the restriction of services and the suspension of formal and informal care networks. Numerous studies have analyzed how home confinement have affected different gender gaps, including the gender gap related to chores within the home. This research aims to contribute to the existing literature from the perspective of gender geography by introducing the variable municipality size in the analyses. Our research in the case of Spain shows the COVID-19 health crisis to have had a significant impact on gender gaps, albeit to varying degrees. Women, especially those living in small municipalities, experi…
Input-output finite-time stability of positive switched linear systems with state delays
2013
This paper is concerned with the problem of input-output finite-time stability (IO-FTS) for a class of discrete-time positive switched systems with time-varying delays. Two sufficient conditions for the existence of IO-FTS of such systems with respect to two different input signals are presented, respectively. All the results obtained are formulated in a set of linear inequalities. Two numerical examples are given to illustrate the effectiveness of the proposed results.
Fast and Accurate Bounds on Linear Programs
2009
We present an algorithm that certifies the feasibility of a linear program while using rational arithmetic as little as possible. Our approach relies on computing a feasible solution of the linear program that is as far as possible from satisfying an inequality at equality. To realize such an approach, we have to detect the set of inequalities that can only be satisfied at equality. Compared to previous approaches for this problem our algorithm has a much higher rate of success.
Discrete-time static output-feedback semi-decentralized H<inf>&#x221E;</inf> controller design: An application to structural vibratio…
2012
In this work, we present a new and effective method to design discrete-time static output-feedback H ∞ controllers. This new method, based on a Linear Matrix Inequality (LMI) formulation, introduces a suitable transformation of the LMI variables that allows to obtain an explicit expression for the output-feedback gain matrix. Moreover, for problems involving a set of subsystems with information exchange constraints, a convenient structure on the LMI variables can be imposed in order to design semi-decentralized controllers, where the corresponding output-feedback gain matrix has a prescribed zero-nonzero structure. To illustrate the proposed methodology, discrete-time static velocity-feedba…
On the Determinants of Distribution Dynamics
2013
n this paper we propose a novel approach to identify the impact of growth determinants on the distribution dynamics of productivit y. Our approach integrates counterfactual analysis with the estima tion of stochastic kernels. The counterfactuals are constructed from a semi-parametric growth regression, in which the cross-section heterogeneity in the growth determinants is removed. The methodology also allows us to test for potential distributional effects in the residuals. We illustrate the usefulness of the proposed methodology by an application to a cross-section of countries, which highlights the significant impact on inequality and polarization in the world productivity distribution of …