It has been proven that collaboration between authors leads to a positive influence on research. This paper aims to analyse the complex structure of the co-authorship network among researchers of the Italian Institute of Technology. In this paper, we examine two different co-authorship networks created starting from the data of the papers published by the Italian Institute of Technology during the period 2006–2019. We apply the main Social Network Analysis techniques to describe the relational structure of the group of researchers and its evolution over time. The structure and characteristics of the networks are analysed both at macro and micro levels, and an attempt is made to identify a possible relationship between the position of researchers in the graphs and their scientific productivity and quality.

Gender equality represents a central topic of our society, and its study is gaining increasing attention in the international panorama. During the last 20 years, various indicators aiming at measuring gender equality have been proposed, but there are no systematic experiences of indicators tailored for a subnational analysis. We propose a regionalization of the most complete and detailed gender equality indicator, the gender equality index (GEI) of the European Institute on Gender Equality, choosing Italy as a case study. The results show how a regionalized approach to gender equality is necessary to set priorities and target regional policy actions.

Tax expenditures (TEs) are preferential tax treatments granted to specific individuals or categories of households, with the aim of achieving social and economic goals. They are widely used by EU Member States. However, their fiscal and equity impacts are not always clear and their effectiveness and efficiency as a policy instrument need to be carefully evaluated, especially in the present context of constrained public finances. This article quantifies the fiscal and equity effects of social TEs related to housing, education and health in 28 European countries making use of EUROMOD, the EU-wide microsimulation model. We find a variety of effects, in terms of sign and magnitude, across Member States, and within these, among types of households. Overall, our findings suggest that the impact of TE on tax revenues and on income inequalities can be sizable. The redistributive impact of removing TEs can go in both directions, either on the progressive or regressive side, depending on the country and the TE considered.