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Current Research Projects

A selection of the current research projects of our members with relation to social networks (projects are organized alphabetically by title):

  1. A Conceptual Framework for Network Change. Guillermo Ruiz Pava & Eric Quintane.

We propose a conceptual framework to categorize different forms of network change. Also the framework identifies types of methods to assess empirically network changes, and provides applications in hypothesis formulation.

  1. Applications of Network Meta Analysis in Health Sciences: A Systematic Review and characterization of published studies Felipe Montes, Ana María Jaramillo (with Ana Lucia Rodríguez, Olga L. Sarmiento, Yanet Ruvalcaba, Loreen Magariño, Dionne Stephens, Purnima Madhivanan)

This methodological study aims to characterize, categorize and describe the Network Meta Analysis (NMA) body of research in the health sciences, while also exploring patterns emerging from its methods, estimates and conclusions. NMA is a novel application of network science to the medical field that performs indirect comparisons and poses hierarchical order of treatment effects.

  1. Association among position and individual attributes in social networks Felipe Montes (with María Camila Fierro, Sergio Morales, Natalia Echeverry, Pablo Lemoine, Jose D. Meisel, Roberto Zarama)

This project analyzes the relation among centrality of individuals and their social attributes: perceptions of popularity, beauty and sympathy. The social network was built with friendship non-reciprocal nominations of 310 interviewed students. In addition to demographic attributes, each student nominated its most representative classmate for each specifically social attribute. Therefore, each student has different social attributes scores that are compared with their role in the spreading processes of emotions, talk topics and flu symptoms.

  1. Bad Bosses and Being in the Middle. Eric Quintane (with Julija Mell, Giles Hirst & Andrew Carnegie).

We explore the role that middle manager have in preventing consequences from having a bad executive to affect line workers. In their landmark paper, Aral and VanAlstyne (2011) show the tradeoff between tie bandwidth and information novelty. We challenge two assumptions that Aral and VanAlstyne make regarding the components of bandwidth and explore the consequences of releasing these assumptions for information novelty.

  1. Bandwidth DeconstructedEric Quintane (with Matthew Brashears). 
  2. Black PhD Students’ inclusion, attrition and permanence: A Social Network Analysis Felipe Montes, Ana María Jaramillo (with Ana Lucía Rodríguez, Dionne Stephens)

We are evaluating the structural metrics and attributes of the ego social network of Black PhD Students enrolled in the second term at 2016 in an university of United States. With multiplex and multilayer social network analysis we want to explain how the academic and emotional support systems of the Black PhD students are related with the emergence of their perceptions of attrition, academic achievement, emotions, inclusion and academic adjustment.

  1. Cross-Class Networks in College Felipe Montes, Ana María Jaramillo, Andrés Molano (with María José Álvarez-Rivadulla)

This paper analyzes ego networks of friendships and academic relationships among students in a context of an unprecedented policy intervention that opened up the door to a massive number of the poorest students in an elite university in Colombia. Using multiplex network metrics we analyze  friendship and academic relations of undergraduate students of three different cohort programs. We want to evaluate the emergence of homophily and segregated communities as the result of node attributes and students metadata: sex, socioeconomic strata and being or not beneficiary of the government policy.

  1. Diseño y análisis de los patrones de movilidad regional de los estudiantes para el título técnico profesional y tecnológico SENA entre el año 2012 y 2017 Felipe Montes (with Martha Blanco)

Based on the mobility networks of students enrolled in the National Learning Service institute of Colombia (SENA for its acronym in Spanish) during the years 2012 and 2017, we want to develop intervention strategies in different regions of the country. The aim of this project is increase the rate of employability to 70% for enrolled students and increase by 50% the amount of enrolled students affected by the post conflict era. Therefore, we analyze the mobility patrons and community structures using methodologies  of social and temporal networks.

  1. Emotions and Network Perceptions. Eric Quintane (with Helena González & Matthew Brashears).

Do individuals activate their network differently when they experience different emotions? We argue that individuals experiencing shame will activate smaller and denser regions of their network than individuals experiencing happiness.

  1. Family Networks, Trust and the Emergence of Financial Capital in Antioquia in the 19th Javier Mejia (with Andrés Álvarez & César Mantilla).

We study how the pattern of interaction of the elite of Antioquia allowed the emergence of banking in the region.

  1. Identifying seed nodes spreaders in social networks Felipe Montes, Ana María Jaramillo (with Jose D Meisel, Albert Diaz-Guilera, Juan A. Valdivia, Roberto Zarama)

We propose three innovative decentralize based strategies for identifying initial seed nodes in spreading processes. We compared our method with the known strategies of highest degree, highest betweenness, highest closeness, highest Page-Rank, K-core decomposition, Vote-Rank, and a randomize selection as control strategy. The comparison was made simulating the susceptible-infected model in real networks, varying the initial percentage of seed-nodes and the probability of contagion.

  1. In Need of Aid: Accessing Financial Resources for Humanitarian Operations. Sebastián Villa & Eric Quintane (with Gloria Urrea).

We explore the dynamic interplay between donors and recipients of humanitarian help in an attempt to understand how humanitarian organizations are able to manage their dependence on volatile resources and survive over time.

  1. In the Mind of the Beholder: (Mis)alignment of Perceptions of Dyadic Knowledge Transfer in Organizations. Eric Quintane (with Robert Case).

We explore the antecedents of misalignments in perceptions of knowledge exchange in dyads.

  1. Knowledge Transfer and Network Coevolution. César García-Díaz (under a Newton Fund grant, UK).

This project aims at exploring effects of individual-level exploration and exploitation forces in evolving networks and their implications in knowledge transfer in networked teams.

  1. Learning from the Transfer of Ideas in Problem-Solving. Guillermo Ruiz Pava.

This project aims to show that the transfer of ideas for problem-solving generates learning about how to solve problems in the organizational context. People are not fixed in their creative ability, but they can learn to generate ideas for solving problems from others. Two possible factors might influence the learning processes: structural factors such as transitivity, and attribute based factors such as years of schooling.

  1. Links between Friendship and Drugs Use in Colombian Schooled Adolescents: Structure, Position and Individual Characteristics.Francisco Cardozo Macías & Andrés Molano.

In this research we explore the association between social environment (structural and social position indicators in a friendship network) and alcohol controlling by individual characteristics of adolescents enrolled in 5 publics schools of Bogotá.

  1. Market-level Effects of Firm-level Adaptation and Intermediation in Networked Markets of Fresh Foods: A Case Study in Colombia. César García-Díaz (with Gonzalo Mejía).

This project explores the role of intermediation in networked competition. Based on Bogotá’s food market supply chain, we aim at developing a fully calibrated agent-based model to explore potential scenarios for agro-food market policies – Accepted for publication in Agricultural Systems.

  1. Network Analysis of a Universities Collaboration Network Felipe Montes (with José D. Meisel, Pablo Lemoine, Juan A. Valdivia, Roberto Zarama)

This paper studies the network structure of collaboration between universities that form Red Mutis (Mutis network). This research wants to study how collaboration can appear between universities through the interaction of particular areas such as: directive offices, academic departments and faculties, administrative offices, and foreign affairs offices. Network analytic methods (visual analysis, positional analysis, and a stochastic network method) were used to characterize the organizational structure of the network, and to identify what variables or structural tendencies are related to the likelihood that specific areas of a university would collaborate.

  1. Networked Cournot Competition and the Coevolution of the Firm and the Product Space. César García-Díaz (with Arjen van Witteloostuijn & Gábor Péli).

By developing a mathematical and computational model, this project aims at representing the product attribute space as an endogenous creation of firms’ actions in a competitive setting, and at understanding the temporal effect of dimensionality in market competition.

  1. Overweight, Physical Activity, and Screen Time in Friendship. Felipe Montes, Andrés Useche (with Roberto Jiménez, José Meisel, Silvia Gonzalez, Ruth Hunter, Andrea Martínez, Peter Katzmarzyk, Olga Sarmiento).

We explore the relationships among 20 child friendship networks from Colombian schools and overweight and health-related behaviors. In this study, we aimed to assess whether children and their close friends are similar in weight status, physical activity, and sedentary behaviors.

  1. Physical inactivity and substance abuse in rural areas: social transmitted conditions? Felipe Montes (Ana Lucía Rodríguez, Olga L. Sarmiento, Dionne Stephens, Purnima Madhivanan)

The goal of this project is to explore the socially contagious nature of physical inactivity (PI) and substance abuse (SA) in Santana (Barú), a rural community in Colombia. A temporal social network will be built under the complex systems paradigm with longitudinal censual and socio-metric data of approximately 1000 adolescents and young adults. Surveys will be conducted in three time- points and will include questions on individuals´ social, sexual, family, household and intimate partnership ties. Health-related behavioral data will include physical activity (PA) and substances use. Additional clinical data assessing sexually transmitted infections, gender related attitudes and beliefs will be also collected.

  1. Production of Novelty in Popular Music: an Embeddedness Perspective. Eric Quintane (with Michael Mauskapf, Noah Askin & Joeri Mol).

Using a large database of 100,000 songs released by 14000 artists over 30 years we explore how the context (social, cultural, geographic and organizational) in which the artist is embedded affects the ability of the artist to general novel songs.

  1. Routines and Problem-solving. Guillermo Ruiz Pava.

This project aims to show empirically, and theoretically, that organizational routine as networks of actions affects the problem-solving activity of the firm. Networks of actions can represent the structured collective action of organizations and can be considered a social network.

  1. Slavery and Social Networks. Javier Mejia (with Tom Zohar).

We explore how the social capital constructed by slaves after their arrival to North America affected their life performance.

  1. Social Analytics: Interviniendo comunidades mediante el análisis de redes sociales para el desarrollo sostenible de Colombia Felipe Montes, Andrés Felipe Useche, Ana María Jaramillo (with José D. Meisel)

This project aims develop and apply methodologies of Social Networks Analysis for designing, implementing and evaluating public health interventions with snowball effects in Colombian populations.

  1. Social Networks in Bogota´s Labor Market.Thibaud Deguilhem, Javier Mejia, Santiago Gómez & Eric Quintane. 

We analyze the role of social networks in the job searching process based on a representative sample of Colombia’s largest city. We commissioned a survey from DANE to obtain information about the social relations that people who just found employment used in order to gain that employment.

  1. Temporal Social Network Analysis of a physical activity mobile phone-based intervention in public schools of Bogotá, Colombia Felipe Montes, Andrés Felipe Useche, Ana María Jaramillo (with Ana Lucía Rodríguez, Valentina Cardozo, Olga L. Sarmiento)

The aim of this paper is to evaluate both the effect on health-related behaviours and social cohesion of a physical activity intervention in school breaks which was potentiated through text messages. This paper focus on applying cutting-edge temporal network methods for analysing the effect of the intervention on friendship selection and healthy behaviours adoption. The results of this paper are useful for establishing a methodological framework that could be used in future research for designing and evaluating public health interventions in low and medium income countries.

  1. Temporal social networks within Recreovía users: measuring cohesion emerging from a physical activity program in Bogotá, Colombia Felipe Montes, Ana María Jaramillo (with Ruth Hunter, Ana Paola Ríos, Olga L. Sarmiento).

We analyze how the social capital and cohesion emerge from the temporal social network created around the Facebook user of the Recreovía of Bogotá, Colombia. The Recreovía is a physical activity open street program that promotes healthy behaviors as an effective tool of preventing non communicable diseases in Low and Medium income countries.

  1. The Influence of Homophilous Interactions on Diversity Effects in Group Problem SolvingClaudia Estévez-Mujica, Andrés Acero & César García-Díaz (with William Jiménez-Leal).

We focus on understanding how homophilous interactions may trigger different diversity-related impacts on group performance in problem-solving tasks. We combine experimental results with computational modeling to establish under what conditions diversity/homophily may enhance, or hamper, the problem-solving capacity of teams. – Accepted for publication in Nonlinear Dynamics, Psychology and Life Sciences.

  1. The Performance Consequence of Brokerage: Position and Process. Eric Quintane (with Gianluca Carnabuci).

We build on the distinction between the structural position of brokerage and the process of brokerage in which brokerage engage to explore their performance implications.

  1. The Social Dimension of Burnout. María Camila Umaña & Eric Quintane (with Viviola Gómez).

We explore the way in which social relationships affect employee’s experience of burnout in the workplace.

  1. Time-variant Effects of Friendship Change on Academic Achievement: An Exploratory Social Network Analysis in Colombia. Francisco Cardozo Macías & Andrés Molano.

We analyze longitudinal social network data from a sample 336, sixth and eighth-grade students on one public school in Bogota, Colombia. We focus on the processes of friendship across three measure times spanned over an entire academic year. Specifically, we explore whether processes of losing, keeping or gaining friends during the year is associated with the academic success of youth.

  1. Using E-mail Communication Patterns to Identify Employees at Risk of Job Burnout. Claudia Estévez-Mujica & Eric Quintane.

We propose an innovative way to identify employees with higher levels of burnout by analyzing their e-mail communication patterns. Based on the Job Demands –Resources model we theorize about the relationship between e-mail communication patterns and employee job burnout, and its dimensions: Exhaustion and Disengagement.

  1. Using Game Theory to assess the effects of social norms and social networks on adolescent smoking in schools: a proof of concept study Felipe Montes (with Frank Kee, Ruth Hunter, Laura Dunne, Rajnish Kumar,  Erin Krupka, Erik Kimbrough, Linda Bauld, Abhijit Ramalingam, Olga L. Sarmiento, Laurence Moore, Huiyu Zhou)
  1. When Credit Markets do not Substitute Social Network Evidence from Rural Areas in a Middle Income Country. Santiago Gómez-Cardona.

I explore the reasons for the co-existence of risk-sharing arrangements and credit markets. To this end I test the ability of households to access credit when their social network is temporarily blocked to provide credit resources. I focus in rural contexts where households have recently increased their access to formal credit.

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