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Ítem Product innovation and adoption in markert equilibrium : the case of digital cameras(Universidad Icesi, 2008-03-01) Carranza Romero, Juan EstebanThis paper contains an empirical dynamic model of supply and demand in the market for digital cameras with endogenous product innovation. On the demand side, heterogeneous consumers time optimally the purchase of goods depending on the expected evolution of prices and characteristics of available cameras. On the supply side, firms introduce new camera models accounting for the dynamic value of new products and the optimal behavior of consumers. The model is estimated using data from the market for digital cameras and the estimated model replicates rich dynamic features of the data. The estimated model is used to perform counterfactual computations, which suggest that more competition or lower product introduction costs generate more product variety but lower average product quality.
Ítem ¿Es posible una gestión dinámica de la cooperación en dilemas sociales de gran escala? : el caso de la crisis de electriciad de Colombia de 1992(Universidad Icesi, 2013-01-01) Dyner Rezonzew, Isaac; Parra Valencia, Jorge AndrickThis paper describes how dynamic management of cooperation can confront the path dependence on the initial conditions that characterizes cooperation based on trust in social dilemmas. A dynamic management of cooperation can promote and sustain cooperation by which by large groups can overcome social dilemmas. The proposed management structure is explained and tested using a model developed using System Dynamics. The construct explains the dynamic management of cooperation applied during the 1992 Colombian Electricity Crisis. We conclude that dynamic cooperation management is possible in large scale social dilemmas to ensure effective cooperation.