Artículo de revista ; In recent years, information on the usage of cards as a means of payment has been increasingly used as an indicator of private consumption. The advantages of such information include its daily frequency and the short time lag from the moment of spending until it becomes...

Las familias de buena parte de los países desarrollados venían aumentando su endeudamiento desde los años ochenta, y este proceso se aceleró significativamente en los años previos a la Gran Recesión. Al mismo tiempo, durante ese periodo se produjo una disminución de su tasa de ahorro....

As networks improve and new services emerge, questions arise that affect service deployments and network choices. The Internet is arguably a successful example of a network shared by many services. However, combining heterogeneous services on the same network need not always be the right answer,...

This dissertation contains three essays that can be read independently. The first chapter examines how a debt crisis can occur and persist as a result of unanticipated, transitory, real interest rate and commodity price shocks. Using an optimal stopping framework, the debtor country's optimal...

This study is an empirical analysis of household expenditure behavior using the Linear and Quadratic Expenditure Systems. The expenditure systems are estimated using data collected in 1972 by the Departmento Administrativo Nacional de Estadisticas (DANE) of Bogota, Colombia. The Linear...

My dissertation research is composed of two parts: a theoretical part on semiparametric efficient estimation and an applied part in energy economics under different dynamic settings. The essays are related in terms of their applications as well as the way in which models are constructed and...

In the first chapter; we consider nonlinear transformations of random walks driven by thick-tailed innovations with infinite means or variances. In particular, we show how nonlinearity, nonstationarity, and thick tails interact to generate persistency in memory, and we clearly demonstrate that...

We study incentive compatible profit-sharing rules when output (or profit) is obtained via the joint use of a technology exhibiting decreasing marginal returns. The incentives compatibility criterion we adopt is that of strategy-proofness (SP), arguably the most robust and the most demanding...

Export-share requirements have emerged as one of the most contentious issues in recent international trade policy debate between industrial and developing countries. This dissertation attempts to shed light on this debate by examining whether export-share requirements facilitate technology...