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showing 10 items of 8586 documents
Modeling Return to Education in Heterogeneous Populations: An Application to Italy
2019
The Mincer human capital earnings function is a regression model that relates individual’s earnings to schooling and experience. It has been used to explain individual behavior with respect to educational choices and to indicate productivity on a large number of countries and across many different demographic groups. However, recent empirical studies have shown that often the population of interest embed latent homogeneous subpopulations, with different returns to education across subpopulations, rendering a single Mincer’s regression inadequate. Moreover, whatever (concomitant) information is available about the nature of such a heterogeneity, it should be incorporated in an appropriate ma…
Migration Flows in Finland: Regional Differences in Migration Determinants and Migrant Types
2003
The present study analyzes interregional migration flows in Finland during 1985-96 using a large sample from the longitudinal census data file. The regional concentration of population has sped up in recent years, and most migrants now head to five urban growth centers. The empirical analysis reveals that it is particularly the human capital component (young, educated individuals) that moves to, and stays in, the growth centers. They are attracted by the higher expected wages and employment chances. Conversely, some individuals, mainly older and less educated ones, move back to their original home regions. This countermovement reduces the speed of population concentration. Declining region…
Conflict and the Evolution of Societies
2012
The Malthusian theory of evolution disregards a pervasive fact about human societies: they expand through conflict. When this is taken account of the long-run favors not a large population at the level of subsistence, nor yet institutions that maximize welfare or per capita output, but rather institutions that maximize free resources. These free resources are the output available to society after deducting the payments necessary for subsistence and for the incentives needed to induce production, and the other claims to production such as transfer payments and resources absorbed by elites. We develop the evolutionary underpinnings of this model, and examine the implications of free resource …
Family networks and refugees’ health conditions. A picture from Italian informal settlements
2021
While the relationships between social networks and health are widely acknowledged in the literature, few of these studies have covered the population of refugees living in makeshift camps. In our analysis of a nationally representative Italian survey of individuals living in informal settlements, we find that many had weak family relations: only 10 per cent had one or more family members in their settlement. The paper analyses the effects of individual social network on two measures of health, and finds that the refugees’ health conditions were associated with both their personal characteristics and the characteristics of the settlement. The results show that more than 50 per cent of these…
The role of local adaptation in the relationship between an endangered root hemiparasite Euphrasia rostkoviana, and its host, Agrostis capillaris
1999
We experimentally studied the role of local adaptation and the co-evolutionary relationship between an annual, endangered root hemiparasite Euphrasia rostkoviana and its main host Agrostis capillaris. According to our hypothesis, the existence of local adaptation in hemiparasites should be observable in better hemiparasite performance when attached to A. capillaris hosts originating from Euphrasia populations. After one month of growth, the height and the number of leaves of hemiparasites were not affected by the origin of their hosts. The differences in growth were due to between population effects. The situation remained constant after three months. Hemiparasite biomass was not affected b…
A study of physical processes in microplasma capillary discharges
2011
We continue the research of low-pressure capillary discharge lamps of 500 μ m in radius in Ar/Hg, Kr/Hg and Xe/Hg mixtures. In the previous paper, an experimental approach which combines the optical emission spectroscopy (OES) and tomographic methods was developed to study the capillary discharge. The present work is focused on interpretation of the tomographic reconstruction results for understanding the physical processes occurring in a capillary plasma. Analyzing the results of reconstruction, it was concluded that the radial profiles of Ar, Kr and Xe emission coefficients are in a good agreement with the Schottky theory. According to the Schottky model, ionization processes in plasma a…
How Do Young People Cope with Job Flexibility?: Demographic and Psychological Antecendents of the Resistance to Accept a Job with Non-Preferred Flexi…
2002
La flexibilite est souvent vue comme condition necessaire a la survie des marches de travail nationaux et a celle des organisations dans un monde en rapide changement ou s’accroit la competition globale. Elle a adopte diverses formes tels les contrats a duree determinee, l’externalisation, les horaires flexibles, le temps partiel, les heures complementaires, le roulement fonctionnel. De plus, il a ete declare que la flexibilite organisationnelle se doit d’etre accompagnee d’une flexibilite personnelle. Quoi qu’il en soit, face aux nouvelles opportunites de travail, les gens different tant sur le plan de leurs preferences que sur celui de leur comportement. Le but de cette etude est d’identi…
1440 Child Mortality Under Five in Latvia, Causal Relationship and Reduction Possibilities in An International Context
2010
Background and aims: To identify the reasons of the continuously highest infant and under five mortality (U5M) rates in Latvia (since restoration of independence) within EU - 25, in order to find solutions to minimize the mortality rate in accordance with Millenium Development Goals (MDG). Methods: Analytical study of statistical data bases was performed by monitoring reports, private publications to find causal relationship in international aspect between U5M in Latvia and following factors: GDP, health budget per capita, Gini coefficient, medical service availability, etc. Results: Structure of U5M in Latvia differs from EU-25, being 2 to 10 times higher by reason of external causes of de…
Mental States of Addiction
2015
An increasing number of studies have examined lay meanings of addiction. The purpose of this study was to explore whether a generalized conception of an addiction mind-set was evident in the beliefs of a sample of 1,062 Norwegian adults responding to an online survey. The respondents were given a rating task in the following form: “Addiction to [substance/behavior] is/represents [descriptive term].” For each of the nine different addictive behaviors (cocaine, cannabis, alcohol, gambling, smoking, amphetamine, sedatives, snus, and heroin), the respondents rated their endorsement of 11 descriptive terms (mental states): reduced self-determination, obsession, strong urge, strong appetite, stro…
The role of Dutch in the development of East Anglian English
2013
Dutch speakers may or may not have contributed a certain amount of lexical material to modern East Anglian dialects. There is a much stronger case to be made, however, for arguing that Dutch speakers did have a rather profound infl uence on the morphology of East Anglian English, dating from the time when almost forty percent of the population of the capital of East Anglia, Norwich, were refugees from the Low Countries. That infl uence was indirect, and mediated through mechanisms of linguistic change associated with language contact.