Competition, R&D Activities and Endogenous Growth

A prediction of the endogenous growth models with quality ladders is that there exists a negative relation between growth and the degree of market competition. The aim of this article is to shed light on the relation between competition and growth when horizontal and vertical innovations can simultaneously occur by adopting the structure of the patent race model; we show the way in which the toughness of competition influences the firms’ incentives to invest in the two R&D activities; in particular, the presence of vertical and horizontal differentiation can determine a non monotonic long run relationship between competition and growth.Growth; Competition; Vertical and Horizontal Innovations

Learning by gaming:ANT and critical making

Relationships among theory, gaming, learning and socio-technical design are explored in the two contributions which compose the section. The theory in question is ANT, re-interpreted through critical making - an umbrella term for various distinctive practices that link traditional scholarship in the humanities and social sciences to forms of material engagement. Sergio Minniti describes an ongoing project called Game of ANT, which draws upon the critical making approach to design an interactive technology and a workshop experience through which scholars and students can conceptually-materially engage with ANT, hence exploring and approaching it from novel points of view. Game of ANT adopts the Latourian vision of technoscience as war and physically embodies this idea by proposing a sort of war game during which participants play the roles of human or non-human actors engaging with the competitive dynamics of socio-technical life. The commentary by Stefano De Paoli proposes new directions to develop the project, by deepening the concept of game and its value for design and learning processes.</p

Unemployment Benefits Crowd Out Nascent Entrepreneurial Activity

Analyzing a cross-country panel of 16 OECD countries from 2002 to 2005, we find that higher unemployment benefits crowd out nascent entrepreneurial activity. Our results hold regardless of entrepreneurial motivation (necessity or opportunity) and entrepreneurial type (imitative or innovative).entrepreneurship;business startups;unemployment benefits

Female Entrepreneurship in Developing Countries

Women, Entrepreneurship, Developing Countries

VVV Survey Microlensing Events in the Galactic Center Region

Indexación: Scopus.We search for microlensing events in the highly reddened areas surrounding the Galactic center using the near-IR observations with the VISTA Variables in the Vía Láctea Survey (VVV). We report the discovery of 182 new microlensing events, based on observations acquired between 2010 and 2015. We present the color-magnitude diagrams of the microlensing sources for the VVV tiles b332, b333, and b334, which were independently analyzed, and show good qualitative agreement among themselves. We detect an excess of microlensing events in the central tile b333 in comparison with the other two tiles, suggesting that the microlensing optical depth keeps rising all the way to the Galactic center. We derive the Einstein radius crossing time for all of the observed events. The observed event timescales range from t E = 5 to 200 days. The resulting timescale distribution shows a mean timescale of days for the complete sample (N = 182 events), and days if restricted only for the red clump (RC) giant sources (N = 96 RC events). There are 20 long timescale events ( days) that suggest the presence of massive lenses (black holes) or disk-disk event. This work demonstrates that the VVV Survey is a powerful tool to detect intermediate/long timescale microlensing events in highly reddened areas, and it enables a number of future applications, from analyzing individual events to computing the statistics for the inner Galactic mass and kinematic distributions, in aid of future ground- and space-based experiments.http://iopscience.iop.org/article/10.3847/2041-8213/aa9b29/met

Location in a vertically differentiated industry

We analyze a model of a vertically differentiated duopoly with two regions. These two locations differ for the market size or for the distribution of the willingness to pay for quality of their consumers. Firms sequentially choose to settle in one region and then simultaneously compete in prices, selling their products both on the local market and on the foreigner one. We show that the decision whether to agglomerate or not crucially depends on the extent of regions’ asymmetries, but, counter intuitively, there are parametric configurations in which the model predicts that the leader (the first firm choosing location) settles either in the poorer or in the smaller region, leaving the other one to the follower.. Welfare analysis completes the paper.Regions; Vertical Differentiation; Oligopoly