998 resultados para Immigration models
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Le Canada, l'Australie et l'Union européenne sont des destinations convoitées par des immigrants hautement qualifiés dont le nombre augmente chaque année. La mobilité croissante de ces travailleurs, soutenue par des politiques favorables à leur intégration à l'échelle nationale, pose des défis de grande envergure, alors que celles-ci tentent de conjuguer des objectifs économiques avec le redressement démographique à long terme. La reconnaissance des titres de compétences étrangers (RTCE) figure toujours parmi les principaux défis de cette gestion des flux migratoires, s’imposant dans les processus d'admission aux professions réglementées au Québec comme dans les autres juridictions provinciales, nationales et communautaires. Notre recherche vise à expliciter la corrélation entre le modèle de sélection économique choisi par le Québec particulièrement et la difficile intégration en emploi des nouveaux résidents permanents qualifiés. Nous examinons l’utilité de réformer la procédure administrative de la demande d’immigration en amont pour y inclure une étape obligatoire de RTCE par les organismes réglementaires compétents. Étudiant des dispositifs juridiques en vigueur à cet effet en Australie et en Union européenne, nous cherchons à déterminer si la transposition d'une telle rigueur de sélection est réaliste et souhaitable dans le contexte spécifique québécois.
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2000 Mathematics Subject Classification: primary 60J80; secondary 60J85, 92C37.
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2000 Mathematics Subject Classification: primary: 60J80, 60J85, secondary: 62M09, 92D40
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A birth-death process is subject to mass annihilation at rate β with subsequent mass immigration occurring into state j at rateα j . This structure enables the process to jump from one sector of state space to another one (via state 0) with transition rate independent of population size. First, we highlight the difficulties encountered when using standard techniques to construct both time-dependent and equilibrium probabilities. Then we show how to overcome such analytic difficulties by means of a tool developed in Chen and Renshaw (1990, 1993b); this approach is applicable to many processes whose underlying generator on E\{0} has known probability structure. Here we demonstrate the technique through application to the linear birth-death generator on which is superimposed an annihilation/immigration process.
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Attention has recently focussed on stochastic population processes that can undergo total annihilation followed by immigration into state j at rate αj. The investigation of such models, called Markov branching processes with instantaneous immigration (MBPII), involves the study of existence and recurrence properties. However, results developed to date are generally opaque, and so the primary motivation of this paper is to construct conditions that are far easier to apply in practice. These turn out to be identical to the conditions for positive recurrence, which are very easy to check. We obtain, as a consequence, the surprising result that any MBPII that exists is ergodic, and so must possess an equilibrium distribution. These results are then extended to more general MBPII, and we show how to construct the associated equilibrium distributions.
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This entry discusses ‘immigration,’ which is the permanent movement of people across states, seen from the perspective of the receiving (rather than sending) states. The focus is on the relationship between immigration and states, a neglected topic in classic immigration research, but receiving more attention in recent scholarly literature. The entry discusses, in particular, some explanatory models of immigration policy and how the immigration experience has changed or reconfirmed the institution of citizenship.
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Background. Lack of coverage, lack of access, and failure to utilize health care services have all been linked to dismal health outcomes in the US. Such consequences have been a longstanding challenge that US minorities are faced with, in the context of a health care system believed to be lacking efficiency and equity. National population surveys in the US suggest that the number of uninsured approaches 50 millions, while some concerns and suspicions are raised by opponents to the growing number of foreign born US residents, many of whom are Hispanic. Research shows that race is a significant predictor of lack of coverage, access, and utilization, while age, gender, education, and income are also linked to these outcomes. We investigated the potential effect of immigration status or duration in the US on the association between coverage, access, use, and race. Methods. Using National Health Interview Survey (NHIS) data of 2006, we selected 22, 667 individuals of Non-Hispanic Black, Hispanic, and Non-Hispanic White descent, at least 18 years of age, US-born and foreign-born who reported their duration of residence in the US. Through complex sample survey logistic regression analysis, we computed odds ratios, beta coefficients, and 95% confidence intervals using models which excluded then included immigration status. Results. Although a significant predictor of the outcomes, immigration status did not change the relationship between each of the dependent variables (coverage, access, utilization), and the factor race, while adjusting for age, gender, education, and income. Our results show that Hispanics were least likely to have coverage (OR=.58; 95% CI[.49, .68]), access (OR=.62; 95% CI[.50, .76]), and to utilize services (OR=.60; 95% CI[.46, .79]) followed by Non-Hispanic Blacks, and Non-Hispanic Whites. These results were not changed by stratification, or the inclusion of interaction terms to eliminate the potential effect of relationships between independent variables. Recent immigrants (<5 years in US) were 0.12 times less likely to be insured, but also 0.26 times less likely to utilize services (p<0.001), and in addition they represented only 7.3% of the uninsured and 1.9% of the US population in 2006. Furthermore, 12% of the Non-Hispanic White population in the US was not covered, and 65% of the uninsured individuals were US-Born Citizens. Other predictors of lack of coverage, access and use were age below 45, male gender, education at high school or below, and income of less than $20,000. Conclusion. This investigation shows that the high percentage of uninsured was not directly caused by Hispanics, and immigration status alone could not explain racial differences in coverage, access, and utilization. An immigration reform may not be the solution to the healthcare crisis, and more specifically, will not stop the increase in the number of uninsured in the US, nor reduce the cost of health care. As a better alternative, universal health insu rance coverage should be considered, when aiming to eliminate racial disparities, and to solve the health care crisis. ^ Keywords. health insurance, coverage, access, utilization, race, immigration, disparities.^
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This paper has three primary aims: to establish an effective means for modelling mainland-island metapopulations inhabiting a dynamic landscape: to investigate the effect of immigration and dynamic changes in habitat on metapopulation patch occupancy dynamics; and to illustrate the implications of our results for decision-making and population management. We first extend the mainland-island metapopulation model of Alonso and McKane [Bull. Math. Biol. 64:913-958,2002] to incorporate a dynamic landscape. It is shown, for both the static and the dynamic landscape models, that a suitably scaled version of the process converges to a unique deterministic model as the size of the system becomes large. We also establish that. under quite general conditions, the density of occupied patches, and the densities of suitable and occupied patches, for the respective models, have approximate normal distributions. Our results not only provide us with estimates for the means and variances that are valid at all stages in the evolution of the population, but also provide a tool for fitting the models to real metapopulations. We discuss the effect of immigration and habitat dynamics on metapopulations, showing that mainland-like patches heavily influence metapopulation persistence, and we argue for adopting measures to increase connectivity between this large patch and the other island-like patches. We illustrate our results with specific reference to examples of populations of butterfly and the grasshopper Bryodema tuberculata.
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2010 Mathematics Subject Classification: 60J80.
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During the last decade, the United States has witnessed a high increase in its immigration flow. Despite recent surge of interest in numerically small ethnic groups, data on Bulgarian immigrants in the United States is almost non-existent. This is the first comprehensive study on the Bulgarian ethnic group in the United States. ^ This study examined the impact of immigration upon the negotiation of cultural prescriptions by Bulgarian immigrants in the United States. Several fundamental Bulgarian prescriptions for daily behavior, such as emphasis on stability rather than mobility, preference for collectivism instead of individualism, and wide use of social critique rather than social approval were tested on U.S. soil. Furthermore, the impact of gender upon cultural appropriation and retention was considered. The study made use of a comprehensive historical analysis of Bulgarian immigration to the United States, statistical descriptions of contemporary Bulgarian immigrants in the United States, and over a three-year long qualitative study of Bulgarian immigrants in South Florida. ^ The results of the study indicated that the transferring of cultural prescriptions due to immigration did not occur unaffected by gender. Bulgarian and U.S. cultural models clashed, intermingled, and resisted each other in various ways depending on the immigrants' gender. At the same time, gender did not solely determine the validity of prescriptions for daily behavior, but it rather acted in concert with other principles of everyday life. In addition, gender impacted significantly the method, type, and structure of the immigration journey. Gender was a very significant variable in the determination of these features of the immigration process, but it did not account independently for historical variations. Other factors, such as larger contexts of reception and rejection also played an important role. ^
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The intersection of gender, welfare and immigration regimes has been one of the main focus of a rich scholarship on paid domestic work in Europe. This article brings into the discussion the nexus of employment and immigration law regimes to reflect on the role of legal regulation in structuring and reducing the vulnerability of domestic workers. I analyse this nexus by looking at the cases of Cyprus and Spain, two states falling under the cluster of Southern Mediterranean welfare regimes, that share certain characteristics in terms of immigration regimes, but have substantially different employment law regulation models. The first part sketches the debate on the employment law regulation of domestic work. The second part starts by giving an overview of the immigration regimes of Cyprus and Spain in relation to migrant domestic workers and then proceeds to analyse the two countries’ models and substance of employment law regulation in domestic work. The comparison of these two divergent approaches informs the debate on how the legal regulation of domestic work should be best structured. In Spain there have been recent dynamic legislative changes in the employment law regulation of domestic work. The final part of the article traces these changes and reflects on why such processes have not taken place in Cyprus.