Recent African immigration to South America: The cases of Argentina and Brazil in the regional context

Incluye bibliografía

The Application of Regionalization in the Meat Trade: Why the Reluctance?

Currently, the world meat trade is undergoing substantial changes as a consequence of the spread of transboundary animal diseases. These diseases have resulted in the implementation of trade embargoes applied nation-wide against infected countries, contrary to the principle of regionalization. This principle allows a country to declare part of its territory free from a given disease even though there have been outbreaks in other regions thus averting the need to suspend all exports. Its application consists in the formal recognition that a zone is disease- or pest-free. This article presents some of the disputes caused by reluctance to apply the regionalization principle in the case of the three main transboundary diseases that have affected meat trade in recent years: "mad cow disease", foot and mouth disease, and avian flu. This article analyses the positions taken by some consumer markets and the challenges that the principal exporting nations have faced when confronted with trade embargoes.

Decentralization and regionalization: dynamics and conditioning factors for the implementation of the Health Pact in Brazil

Decentralization and regionalization represent constitutional guidelines for the organization of the Unified Health System, which in the last 20 years has required the adoption of mechanisms to coordinate and accommodate federative tensions in Brazil's healthcare sector. This paper analyzes the national implementation of the Health Pact between 2006 and 2010 involving a strategy that reconfigures intergovernmental relations in the sector. The study involved the analysis of documents, official data and interviews with federal, state and municipal managers in the Brazilian states. The content of the national proposal is initially discussed, including its implications for health policy. The different rhythms and degrees of implementation of the Health Pact are then reviewed, with respect to adherence by states and municipalities and the formation of Regional Management Boards. Lastly, the conditioning factors for the multiplicity of experiences observed in the country are identified and the challenges facing progress toward a decentralized and regionalized health system in Brazil are discussed.

Partial reconstruction of the trajectories of a discretely observed branching diffusion with immigration and an application to inference

In this treatise we consider finite systems of branching particles where the particles move independently of each other according to d-dimensional diffusions. Particles are killed at a position dependent rate, leaving at their death position a random number of descendants according to a position dependent reproduction law. In addition particles immigrate at constant rate (one immigrant per immigration time). A process with above properties is called a branching diffusion withimmigration (BDI). In the first part we present the model in detail and discuss the properties of the BDI under our basic assumptions. In the second part we consider the problem of reconstruction of the trajectory of a BDI from discrete observations. We observe positions of the particles at discrete times; in particular we assume that we have no information about the pedigree of the particles. A natural question arises if we want to apply statistical procedures on the discrete observations: How can we find couples of particle positions which belong to the same particle? We give an easy to implement 'reconstruction scheme' which allows us to redraw or 'reconstruct' parts of the trajectory of the BDI with high accuracy. Moreover asymptotically the whole path can be reconstructed. Further we present simulations which show that our partial reconstruction rule is tractable in practice. In the third part we study how the partial reconstruction rule fits into statistical applications. As an extensive example we present a nonparametric estimator for the diffusion coefficient of a BDI where the particles move according to one-dimensional diffusions. This estimator is based on the Nadaraya-Watson estimator for the diffusion coefficient of one-dimensional diffusions and it uses the partial reconstruction rule developed in the second part above. We are able to prove a rate of convergence of this estimator and finally we present simulations which show that the estimator works well even if we leave our set of assumptions.

Non-parametric estimation of the diffusion coefficient of a branching diffusion with immigration

Wir betrachten Systeme von endlich vielen Partikeln, wobei die Partikel sich unabhängig voneinander gemäß eindimensionaler Diffusionen [dX_t = b(X_t),dt + sigma(X_t),dW_t] bewegen. Die Partikel sterben mit positionsabhängigen Raten und hinterlassen eine zufällige Anzahl an Nachkommen, die sich gemäß eines Übergangskerns im Raum verteilen. Zudem immigrieren neue Partikel mit einer konstanten Rate. Ein Prozess mit diesen Eigenschaften wird Verzweigungsprozess mit Immigration genannt. Beobachten wir einen solchen Prozess zu diskreten Zeitpunkten, so ist zunächst nicht offensichtlich, welche diskret beobachteten Punkte zu welchem Pfad gehören. Daher entwickeln wir einen Algorithmus, um den zugrundeliegenden Pfad zu rekonstruieren. Mit Hilfe dieses Algorithmus konstruieren wir einen nichtparametrischen Schätzer für den quadrierten Diffusionskoeffizienten $sigma^2(cdot),$ wobei die Konstruktion im Wesentlichen auf dem Auffüllen eines klassischen Regressionsschemas beruht. Wir beweisen Konsistenz und einen zentralen Grenzwertsatz.

Passage of Alabama's Hb 56: Fueled By Dominant Anti-Immigration Tropes

Abstract Background. In 2011, Alabama, neither a border state nor hold a significantly large Hispanic population, passed the most restrictive state immigration law, The Beason-Hammon Alabama Taxpayer and Citizen Protection Act, HB 56. This omnibus law was far-reaching in its restrictions, including, but not limited to, identification, public services, employment, housing, and law enforcement. Objectives. This research explores the dominant tropes present in the narrative surrounding the anti-immigration legislative activity in Alabama that created fertile ground for the passage of such a punitive immigration law. Methods. Newspaper articles from 2007 to 2011 in Alabama¿s Birmingham News and Press-Register, the two most circulated newspapers in the state, were attained from NewsLibrary.com, an online database of 5,311 newspapers and other news sources. Results. Seven dominant tropes were identified in the articles that pushed for anti-immigration policies. These tropes claimed (1) the US-Mexico border is not secure, (2) the federal government has failed to enact comprehensive immigration reform, (3) immigrants steal jobs, hurt the economy, and (4) burden public services, (5) immigrants are criminals and terrorists, (6) they refuse to assimilate and learn English, and (7) there has been a dramatic percent change in the Hispanic and illegal populations. These tropes cumulatively worked together to create anti-immigration sentiment that pushed for the passage of HB 56.

Post-immigration education of adult immigrants in Switzerland

In 2000, 20 per cent of the Swiss resident population was constituted by foreigners (Fibbi and Wanner 2009). As in other European countries, the migrant population in Switzerland can broadly be differentiated into three groups: 1) Migrant groups from less-developed regions with substantially lower educational attainments and an increased risk for unemployment than in the reference population, 2) Migrant groups that are rather more successful, although still somewhat behind the majority population, 3) Migrant groups who even outperform the majority population in terms of educational and employment success (Heath et al. 2008). Given these inequalities – in particular in the first migrant group – participation in further education in the country of destination might contribute to better integrate migrants in the Swiss society in general and the labour market in particular. On the basis of the pooled SAKE data set (1991-2000), patterns of participation in further education of adult migrants are analysed. As the results show, many migrant groups differ from the Swiss reference population regarding participation in further education. While inequalities are often explained by educational attainments and occupational status, in some cases they hold even if controlled for the determinants explaining participation in further education in general. Regarding migrant-specific determinants, type of residence permit proved to be an important indicator explaining the disadvantages in access to further education encountered by migrants originating from Former Yugoslavia.