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Informal employment has been identified as an important social determinant of health. This article addresses the processes through which informal employment affects workers' health in Chile. The study's methodological approach was based on qualitative interviews with 34 formal and informal workers. The findings show how workers perceive informal employment as negatively affecting their mental and physical health through different dimensions of their living and working conditions. Incorporating a gender perspective proves to be integral to the analysis of these processes. The article concludes by discussing how neoliberalism underlies such vulnerability processes and negatively impacts on the population's health. [ABSTRACT FROM AUTHOR]

The aim of this article is to identify and analyse the logic and structure of centrality measures applied to social networks. On the basis of the article by Borgatti and Everett, identifying the latent functions of centrality, we first use a survey of personal networks with 450 cases to perform an empirical study of the differences and correspondences between degree, closeness and betweenness centrality in personal networks. Then, we examine the correspondences between the three global indicators in each type of centrality: the maximum value, the mean value and the hierarchy or centralization. The results provide a better understanding of the centrality indicators of networks and the reality that they express in an empirical context.

The aim of this article is to identify and analyse the logic and structure of centrality measures applied to social networks. On the basis of the article by Borgatti and Everett, identifying the latent functions of centrality, we first use a survey of personal networks with 450 cases to perform an empirical study of the differences and correspondences between degree, closeness and betweenness centrality in personal networks. Then, we examine the correspondences between the three global indicators in each type of centrality: the maximum value, the mean value and the hierarchy or centralization. The results provide a better understanding of the centrality indicators of networks and the reality that they express in an empirical context. [ABSTRACT FROM PUBLISHER]

The objective of these papers consists to showing some possibilities of analysis Ego-net about social Cohesion, Linking and Integration. A proposal is done in order to analyze these concepts. The data used in the illustrative examples of the concepts come from a survey of Ego-centered networks in Catalonia.

This article aims to present some data about the relational functions that associations have among migrant population. Thus, entails to study the debate that confronts integration and homophily theories. The first ones highlight the virtuous circle of associations and their potential for the development of social capital beyond social groups. Whereas, the second ones consider associations as institutions that reinforce homogeneity on social networks and create parallel structures, creating and reproducing bonding social capital. Both theories are confronted with data of personal networks from the project CASREDIN. The results of this research show direct and indirect effects of participation in associations regarding to the composition of their networks (in terms of origin and place of residence of their Alters) as well as the social support obtained from them. Moreover, differences between various types of association are also explored.

This article compares three indices that represent the geographical dispersion of personal networks. The first index is built on the computation of distances for each Ego with their Alters and among each one them. After calculating the total distance, it is obtained the average for each Ego. The absolute value of the logarithm of this average is the proposed measure. The second index is constructed taking into account only the relations Ego-Alter of the above formula and the third, common in such studies, shows the distribution of active contacts in a ranking of distances (same neighbourhood, same city, Catalonia, rest of Spain, other countries).The comparison is made exploring the effect of the three indexes on the exchanged social support of people living in Catalonia. The data are taken from the survey of personal networks in the project CASREDIN, interested in exploring social networks and social cohesion in Catalonia. Thus, the resident population divided between "national” and "migrants" and in each of the groups social support is evaluated depending on the geographic dispersion of personal networks. Finally, we propose a discussion of the results within the framework of the theory of "transnationalism".