Tesis de Doctorado en Historia y Estudios Regionales presentada al Instituto de Investigaciones Historico Sociales de la Universidad Veracruzana, Region Xalapa.
We analyze students' knowledge and risk perception of four technologies. The aim is to find out whether there is a relationship between area of study (self-selection) and progress of study (socialization) on the one hand and risk perception of technologies regarding health, environment and society on the other. The four technology fields under study are renewable energies, genetic engineering, nanotechnology and information and communication technologies (ICT). Key results are: Irrespective of s...
Our recent work analyses the accuracy of group recommenders when using information about the personality and the social connections between the members of the group. The goal in this paper is the use of personality and trust as the mean to define alliances to reach agreements inside a group of people. The approach reproduces the behaviour of real users when negotiating a common item to consume using three variables: personality, trust and personal preferences. We run an experiment in the movie r...
The paper analyses formal relations (“friendship”) among the Facebook users and studies their interrelation with informal relations (“commenting”). We define general characteristics of the network, give a definition to strong friendship links. Then we analyze strength of Facebook friendship links, study connectivity between a user’s friends, and give an answer to the question how users who have something in common are connected with each other. In conclusion, we consider interrelation between fr...
Drawing from the social and relational perspectives, this study offers an innovative conceptualization and operational approach regarding the validation of self-reported customer demographic data, which has become an essential corporate asset for harnessing business intelligence. Specifically, based on social network and homophily paradigms in which individuals have a natural tendency to associate and interact frequently with others with similar characteristics, we constructed a relational infer...
Abstract In this chapter, I provide an overview of research on social networks and their role in shaping behavior and economic outcomes. I include discussion of empirical and theoretical analyses of the role of social networks in markets and exchange, learning and diffusion, and network games. I also include some background on social network characteristics and measurements, models of network formation, models for the statistical analysis of social networks, as well as community detection. JEL C...
Research indicates that education is a key to both economic growth and higher living standards for American citizens. However, it is challenging for high school students of color living in urban neighborhoods to obtain high-quality education. Extant research indicates that after-school programs serving students of color play a critical role in bridging the achievement gap in education. Unfortunately, in designing and marketing these vital programs, the voices of the most informed, the students, ...
Many explanations of adolescent alcohol use patterns rely on a combination of individual, family, and peer influences to explain transitions and levels of use. Peer use of alcohol is often found to be the most important predictor of an adolescent’s own use of alcohol. The predominant inference drawn from this consistent finding is that an adolescent’s peers influence him or her to use alcohol. A methodological limitation of these studies is that they rely on information from only one member of t...