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Search Results: 1 - 10 of 32362 matches for " Antonio Cabrales "
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The causes and economic consequences of envy
Antonio Cabrales
SERIEs , 2010, DOI: 10.1007/s13209-010-0028-1
Abstract: In this lecture I first give an explanation for invidious preferences based on the (evolutionary) competition for resources. Then I show that these preferences have wide ranging and empirically relevant effects on labor markets, such as: workplace skill segregation, gradual promotions, wage increases that have no relation with productivity and downward wage flexibility. I suggest that labor and human resource economics can benefit from including envy into the standard set of factors considered in their theoretical and empirical models.
Stochastically stable implementation
Antonio Cabrales,Roberto Serrano
SERIEs , 2012, DOI: 10.1007/s13209-011-0062-7
Abstract: Restricting attention to economic environments, we study implementation under perturbed better-response dynamics (BRD). A social choice function (SCF) is implementable in stochastically stable strategies of perturbed BRD whenever the only outcome supported by the stochastically stable strategies of the perturbed process is the outcome prescribed by the SCF. For uniform mistakes, we show that any ε-secure and strongly efficient SCF is implementable when there are at least five agents. Extensions to incomplete information environments are also obtained.
Towards a Proper Assignment of Systemic Risk: The Combined Roles of Network Topology and Shock Characteristics
Lasse Loepfe, Antonio Cabrales, Angel Sánchez
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077526
Abstract: The 2007-2008 financial crisis solidified the consensus among policymakers that a macro-prudential approach to regulation and supervision should be adopted. The currently preferred policy option is the regulation of capital requirements, with the main focus on combating procyclicality and on identifying the banks that have a high systemic importance, those that are “too big to fail”. Here we argue that the concept of systemic risk should include the analysis of the system as a whole and we explore systematically the most important properties for policy purposes of networks topology on resistance to shocks. In a thorough study going from analytical models to empirical data, we show two sharp transitions from safe to risky regimes: 1) diversification becomes harmful with just a small fraction (~2%) of the shocks sampled from a fat tailed shock distributions and 2) when large shocks are present a critical link density exists where an effective giant cluster forms and most firms become vulnerable. This threshold depends on the network topology, especially on modularity. Firm size heterogeneity has important but diverse effects that are heavily dependent on shock characteristics. Similarly, degree heterogeneity increases vulnerability only when shocks are directed at the most connected firms. Furthermore, by studying the structure of the core of the transnational corporation network from real data, we show that its stability could be clearly increased by removing some of the links with highest centrality betweeness. Our results provide a novel insight and arguments for policy makers to focus surveillance on the connections between firms, in addition to capital requirements directed at the nodes.
Evaluation of seed yield and oil contents in four materials of Ricinus communis L.
Plaza T. Guido Armando,Cabrales R. Roberto Antonio,Marrugo N. José Luis
Agronomía Colombiana , 2011,
Abstract: Four castor materials were evaluated in 2009 in the middle region of Valle del Sinu, Colombia. The variables were phonological development, plant height, seed production and oil yield, in order to determine the best material for commercial purposes. All materials reported high yields of oil seeds and highlighting the commercial genotype Nordestina BRS149, 2.2 t ha-1 seed and 47% oil content. Planting distances were 1.5 x 1.5 m and 2.0 x 2.0 m, with densities of 6,666 and 3,906 plants ha-1, respectively. The plant height, seed productivity and oil yield showed significant differences for the interaction density × material; while comparing each material density, seed production only showed differences. These variables were significantly different between population densities, which shows that the higher the plant height, lower productivity. The planting distance of 2.0 x 2.0 m, provides higher productivity per plant values but seed oil yields were not different between densities. The oil quality parameters were assessed using free fatty acid value, iodine, acidity index, saponification, refraction and specific gravity, found that planting distance does not affect the quality of oil.
Search and Congestion in Complex Networks
Alex Arenas,Antonio Cabrales,Albert Diaz-Guilera,Roger Guimera,Fernando Vega-Redondo
Physics , 2003, DOI: 10.1007/978-3-540-44943-0_11
Abstract: A model of communication that is able to cope simultaneously with the problems of search and congestion is presented. We investigate the communication dynamics in model networks and introduce a general framework that enables a search of optimal structures.
Cabrales Vega,Rodolfo A.;
Investigaciones Andina , 2012,
Abstract: chronic wounds represent a challenge for the health team as well as for the patient in regards to how to handle them, long term follow up, cosmetic results, effects on the quality of life and self-esteem. this article emphasizes initially on a patient with a complex secondary abdominal wound of the colon and secondary massive fecal contamination. secondly, it reviews the objectives of the local treatment of the wound and describes some types of dressings, their composition, characteristics and indications. products such as hydrocolloids, ashes, hydrogel, polyurethane foams and silver soaked dressings are included. last, it emphasizes the fact that the treatment of chronic wounds must restore a balance in the factors that determine a good healing process. its management must be complex, organized and based on a tight cooperation between the health team and the patient.
Human Capital Externalities and Growth
Arteaga Cabrales,Carolina;
Ensayos sobre POLíTICA ECONóMICA , 2011,
Abstract: this paper provides evidence of positive externalities in human capital that help to explain divergences in development worldwide. we estimate the supply and demand for human capital using a five-year panel involving 60 countries, covering the period 1980-2000, and found that there exists positive externalities in human capital accumulation close to one. this translates into increasing returns to scale and increasing marginal returns in human capital.
Revista Facultad de Ciencias Económicas: Investigación y Reflexión , 2009,
Abstract: the article underlines the importance of human condition attributes and human potential development in optimizing managers' competences today. the document states that in order to improve human talent management, comprehend and handle better his teamwork, the manager should know which are the attributes of human condition and how to develop skills to work them optimistically, with the purpose of generating strategies to improve workers talent. in this framework, talent is observed as an inexhaustible and susceptible variable of continuous development. the document concludes calling recognition of human condition in organizations, as a necessary strategy to face current society inequalities.
Intervención valvular aórtica percutánea: una terapia novedosa, pero viable en nuestro medio? Percutaneous aortic valve replacement: a novel therapy, but feasible in our environment?
Jaime R Cabrales
Revista Colombiana de Cardiología , 2012,
Fernando Cabrales Mu?oz
Ingeniare : Revista Chilena de Ingeniería , 2008,
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