We reconcile trade theory with plant-level export behavior, extending the Ricardian model to accommodate many countries, geographic barriers, and imperfect competition. Our model captures qualitatively basic facts about U.S. plants: (i) productivity dispersion, (ii) higher productivity among exporters, (iii) the small fraction who export, (iv) the small fraction earned from exports among export...

This paper extends the Brezis et al. (1993) Ricardian leapfrogging model by introducing geographically mobile capital and allowing for a wider variety of development patterns. In a two-region economy, localised learning-by-doing causes specialisation and uneven development. Technological change reverses the existing development pattern if the new technology locates in the low-wage region. Howev...

During the last decades, some Asian countries have experienced a substantial change of their production structure leading to a change of their trade patterns. Whereas formerly high-tech goods were imported, they now constitute an important fraction of the countries' exports. Possible reasons for such a situation to arise are investigated in a model combining Ricardian and Heckscher-Ohlin effect...

introduction: the area under cultivation and yield of crops are affected by various factors, some of which are controllable and some others are uncontrollable. controllable factors are divided into two types of price and non-price factors. among the price factors, prices of agricultural products and inputs play an important role in expanding the cultivation area. uncontrollable factors also hav...

This paper examines the long-run determinants of immigration to Germany using a modified version of the Ricardo model. After a brief overview of labour flows to Germany and the related empirical literature, a Ricardian model of migration is estimated using static panel data methods. The results show that variables representing factor abundance appear to have no effect whatsoever on labour flows...