Recently gravity trade models are applied to disaggregated trade data. Here many zeros arecharacteristic. In the presence of excess zeros usual Poisson Pseudo Maximum Likelihood(PPML) is still consistent, the variance covariance matrix however is invalid. Correcteconomic interpretation however...

This dissertation examines the key prediction of trade models à la Dixit-Stiglitz for the EU-27. Precisely, we test if regional market accessibility determines regional income differences in the enlarged European Union. We propose an empirical strategy that overcomes weaknesses of existing...

Recently gravity trade models are applied to disaggregated trade data. Here manyzeros are characteristic. In the presence of excess zeros usual Poisson Pseudo MaximumLikelihood (PPML) is still consistent, the variance covariance matrix howeveris invalid. Correct economic interpretation however...

In this dissertation I examine a set of crucial topics in the political economy of international trade, with an emphasis on firm-level heterogeneity. The first chapter is an empirical study of the new trade theories in which firm heterogeneity and trade costs play central roles in shaping the...

In this study the case of olive oil imports of Germany is examined since olive oil is a traditional Mediterranean commodity and Germany is the biggest importer in the EU. A gravity model has been employed so as to analyse those factors that explain the German imports of olive oil that were...

Uma melhoria da infra-estrutura e da logística, ao integrar a produção e os negócios entre as diferentes regiões ou países, reduz os custos do comércio e promove a riqueza. No entanto, as análises sobre o relacionamento da infra-estrutura com o comércio internacional tem tido muito mais...

In this paper, we estimate a gravity equation properly accounting for omitted exporter and importer’s overall trade resistance, through country yearly dummies for exporter and importer countries. We find that the omission of time varying multilateral trade resistance terms in the estimation of...

En este trabajo se estima la contribución del crecimiento demográfico a la migración bilateral por medio de un modelo gravitacional y se utilizan los resultados para proyectar flujos migratorios basados en las previsiones de crecimiento demográfico de las Naciones Unidas. Para ello se...

El acuerdo de la Unión Monetaria Latina (UML), firmado en diciembre de 1865 por Francia, Italia, Bélgica y Suiza, estandarizó la acuñación de monedas de oro y plata en los países miembros y permitió la libre circulación de las monedas nacionales en la Unión. En un influyente estudio,...

Las preocupaciones sobre un posible giro de la agenda de la política comercial mundial van en aumento. De hecho, incluso si los aranceles se encuentran en niveles históricamente bajos, las medidas no arancelarias (MNA) desempeñan un papel importante, y creciente, en la política comercial...