A spatial analysis of population dynamics and climate change in Africa: potential vulnerability hot spots emerge where precipitation declines and demographic pressures coincide

We present an integrative measure of exposure and sensitivity components of vulnerability to climatic and demographic change for the African continent in order to identify “hot spots” of high potential population vulnerability. Getis-Ord Gi* spatial clustering analyses reveal statistically significant locations of spatio-temporal precipitation decline coinciding with high population density and increase. Statistically significant areas are evident, particularly across central, southern, and eastern Africa. The highly populated Lake Victoria basin emerges as a particularly salient hot spot. People located in the regions highlighted in this analysis suffer exceptionally high exposure to negative climate change impacts (as populations increase on lands with decreasing rainfall). Results may help inform further hot spot mapping and related research on demographic vulnerabilities to climate change. Results may also inform more suitable geographical targeting of policy interventions across the continent.     

Social Capital and Subjective Wellbeing in Europe: A New Approach on Social Capital

This paper aims to analyze the relationship between the various dimensions of social capital and subjective wellbeing. Data used in this study come from the fourth wave of the European Social Survey and different measures of wellbeing are used to take account of both the cognitive and affective processes of individual wellbeing (i.e. life satisfaction, happiness, and subjective wellbeing). A factor analysis is performed to summarize information coming from a large set of variables into different components corresponding to each dimension of social capital (i.e. networks, norms, and trust). Among the results, we find that the impact of social capital on subjective wellbeing differ depending on the component of social capital which is under analysis. In particular, social networks, social trust and institutional trust are the components that show a higher correlation with subjective wellbeing. Furthermore, in addition to the positive effects of the individual variables, our results suggest that social capital at the aggregate level positively correlates with individual wellbeing, thus pointing to an external or environmental effect of social capital.     

Connectivity‐informed adaptive regularization for generalized outcomes

One of the challenging problems in neuroimaging is the principled incorporation of information from different imaging modalities. Data from each modality are frequently analyzed separately using, for instance, dimensionality reduction techniques, which result in a loss of mutual information. We propose a novel regularization method, generalized ridgified Partially Empirical Eigenvectors for Regression (griPEER), to estimate associations between the brain structure features and a scalar outcome within the generalized linear regression framework. griPEER improves the regression coefficient estimation by providing a principled approach to use external information from the structural brain connectivity. Specifically, we incorporate a penalty term, derived from the structural connectivity Laplacian matrix, in the penalized generalized linear regression. In this work, we address both theoretical and computational issues and demonstrate the robustness of our method despite incomplete information about the structural brain connectivity. In addition, we also provide a significance testing procedure for performing inference on the estimated coefficients. Finally, griPEER is evaluated both in extensive simulation studies and using clinical data to classify HIV+ and HIV? individuals.     

Conditions, demands and constraints on trainers' activity: a case study in the Portuguese context

The aim of the present study is to contribute to the analysis of employment and work conditions of Portuguese trainers, as well as to identify conditions, resources, demands and constraints of their work activities. Despite the lack of scientific knowledge on professional training, the topic has been playing a central role in modern societies. Several data collection strategies were used, namely the application of INSAT to 72 trainers, exploratory interviews with 10 trainers and collective interviews with 6 trainers. The analysis of the data collected highlights the changes in the selection of human resources in the sector as well as the contractual terms of the trainers, mainly independent workers. The intra and inter individual variability of working hours and the diversity of activities performed by each trainer also stands out. Finally, it is important to refer the spontaneous organization of trainers' work activities according to their training modality.     

The entry of women in predominantly male professions: when training supports the search of alternative ways of organizing work time

Following a research carried out on the integration of women in professional areas predominantly for men, this paper intends to present and debate the project of a training course which aims the transformation of the organization of work schedules in order to improve the well-being of the workers involved. The conception of training courses with this type of objective involves the confrontation and debate between the "invested skills" of the trainers and the "constituted skills" of the trainees. But will this paradigm remain intact when applied to training courses permeated by the gender dimension? That is what one will try to realize with the effective implementation of a training course, whose reflection will allow, ultimately, to enrich our understanding on gender, work, health and training.     

Return Migration and Transnationalism: How Are the Two Connected?

Return migration and migrant transnationalism are key phenomena in research on international migration. Here we examine how the two are connected. The article introduces a special section and draws partly upon this selection of papers and partly upon the broader literature. First, we argue that there is often a blurred boundary between mobility as a transnational practice, for instance in the form of return visits, and purportedly permanent or long‐term return migration. Second, we examine the effects of transnationalism on return migration intentions and experiences. Third, we explore how migration trajectories, involving various forms of ‘return’ moves, create different forms of transnationalism. Examples include the ‘reverse transnational’ practices of returnees and the ‘residual transnationalism’ of migrants who have had an unsuccessful return experience and decided to settle permanently abroad. We end by considering how both return migration and transnationalism exist in the interplay between the personal and the social.     

Multiplying Diversity: Family Unification and the Regional Origins of Late‐Age US Immigrants

We use administrative data about new legal permanent residents to show how family unification chain migration changed both the age and regional origin of US immigrants. Between 1981 and 1995, every 100 initiating immigrants from Asia sponsored between 220 and 255 relatives, but from 1996 through 2000, each 100 initiating immigrants from Asia sponsored nearly 400 relatives, with one‐in‐four ages 50 and above. The family migration multiplier for Latin Americans was boosted by the legalization program: from 1996 to 2000, each of the 100 initiating migrants from Latin America sponsored between 420 and 531 family members, of which 18–21 percent were ages 50 and over.     

Demographic Responses to Economic Recessions in Latin America Since 1900*

This paper explores the linkages between economic cycles and demographic processes in Latin America since 1900. We identify the mechanisms through which economic conditions have an impact on demographic outcomes and assess the demographic and socioeconomic consequences of the 1980s. Selected historical evidence is reviewed to illustrate the effects of economic cycles in Western Europe and, aided by an heuristic framework, tentative hypotheses are derived to interpret empirical evidence about the effects of the 1929 and 1980 depressions in selected Latin American countries. Results show that the demograhic consequences of the Great Depression were nontrivial. The analyses of demographic and socioeconomic responses of the post-1980 recession, however, reveal only weak linkages for some outcomes. We argue that the weak relationships may mask important transformations currently underway and conclude with a discussion of the implications for future research.     

Spatial planning in small islands: the need to discuss the concept of ecological structure

The concepts of green infrastructure and ecological structure (ES) are current topics of discussion among the scientific community and spatial planners. ES is mandatory in Portugal in land-planning, such as municipal master plans, but no consensus has been reached on how to implement it. The concept has not yet been implemented in the Azores, a Portuguese autonomous region, even though the Region has the responsibility of adapting legislation or accomplishing the Portuguese legislature. This study presents a critical analysis of the available literature about ES and proposes a conceptual framework to define ES for small islands, which have unique characteristics, focusing on the Azorean archipelago. The conceptual framework meets the requirements of local legislation and uses an ecological function approach that is increasingly advocated in recent European recommendations. This framework is presented as a strategic and flexible way to identify both the important elements (recognized in current legislation) in a territory and the remaining potential of the territory. The framework also supports decision-making by allowing the identification of integrated solutions, decreasing trade-offs as much as possible and reconciling the needs of nature conservation and socioeconomic development. This framework could be applied to other small islands and other territories, with local adaptations.     

Human Capital Disparities and Earnings Inequality in The Portuguese Private Labour Market

Social Indicators Research - This paper examines human capital inequality and how it relates to earnings inequality in Portugal using data from Quadros de Pessoal for the period 1986–2017....