João Paulo Santos da Silva

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This paper reviews econometric methods for dynamic panel data models, and presents examples that illustrate the use of these procedures. The focus is on panels where a large number of individuals or firms are observed for a small number of time periods, typical of applications with microeconomic data. The emphasis is on single equation models with(More)
Much of the empirical analysis done by health economists seeks to estimate the impact of specific health policies and the greatest challenge for successful applied work is to find appropriate sources of variation to identify the treatment effects of interest. Estimation can be prone to selection bias, when the assignment to treatments is associated with the(More)
Any opinions expressed here are those of the author(s) and not those of IZA. Research published in this series may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between science,(More)
Any opinions expressed here are those of the author(s) and not those of the institute. Research disseminated by IZA may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between(More)
This paper explores the interrelation between health and work decisions of older workers. For this, two issues are of relevance. Firstly, health and work may be endogenously related because of direct effects of health on work and vice versa, and because of unobservables that may relate observed health and work outcomes. Secondly, social surveys usually(More)
The possibility of the so called "non-Keynesian" was illustrated by several fiscal episodes in Europe during the last two decades, giving rise to a growing body of both theoretical and empirical literature. The purpose of this paper is twofold. First, a simple two period model for private consumption is presented in order to explain the possibility of both(More)
Today, the clinical trial process remains slow and paper-based. The creation of a Cancer Informatics Infrastructure (CII) can provide the architectural base across the continuum of cancer research and cancer care. Recommendations of a Long Range Planning Committee identified near-term activities for the Office of Informatics at the National Cancer Institute(More)
According to conventional macroeconomics, public debt has a significant effect on the economy since consumers see public debt as net wealth, however, according to the Ricardian Equivalence hypothesis, that effect would be absent. This paper's results, obtained from Euler equation estimations, using a panel data approach, indicate that it would be wise to(More)
This paper establishes a model to explore how all the countries in the world export to an importer. The trade frictions of an exporter include both a variable cost and a fixed cost, and the exporter's bilateral trade relationship is represented by the exported value, the number of exporting firms, and the average price of exported products. The model(More)
—In this paper we report work in progress on the design of a task scheduler that aims to assist people in choosing, scheduling and performing their everyday tasks. The main idea behind the proposed application is a role-playing-game in which the player must strive to evolve features he most desires for his character-to obtain the desired result. A key goal(More)