Junctional adhesion molecule-A (JAM-A), also known as the F11 receptor (F11R), is one of tight junction components. JAM-A a transmembrane glycoprotein that regulates many cellular processes, i.e., angiogenesis, leukocyte transendothelial migration, intercellular permeability, epithelial-to-mesenchymal transition, and platelet activation. Of note, it involved in pathogenesis various cancer types...

We propose a model of flexible trade agreements in which verifying the prevailing contingencies is possible but costly. Two types of flexibility emerge: contingent protection, which requires governments to verify the state of the world, and discretionary protection, which allows governments to set tariffs unilaterally. The structure of the GATT/WTO agreement provides these two types of flexibil...

We estimate productivities at the sector level for 72 countries and 5 decades, and examine how they evolve over time in both developed and developing countries. In both country groups, comparative advantage has become weaker: productivity grew systematically faster in sectors that were initially at greater comparative disadvantage. These changes have had a significant impact on trade volumes an...

Based on the Jones (1971) model, we construct two dynamic models of international trade in which the rate of time preference is either constant or time-varying. The main purpose is to study whether and under what conditions the results derived from the Jones model still hold in the dynamic framework. It is shown that the results of dynamic models may be similar or different to those obtained in...

This paper introduces a new theoretical model to explore how the behavior of heterogeneous intermediate suppliers affects the product quality choice of heterogeneous final good producers. It explains the choices of quality, inputs and the export prices of a multi-product firm in response to different market characteristics. We found that a more productive firm exports a larger and higher qualit...

Understanding and quantifying the determinants of the number of sectors or firms exporting in a given country is of relevance for the assessment of trade policies. Estimation of models for the number of sectors, however, poses a challenge because the dependent variable has both a lower and upper bound, implying that the partial effects of the explanatory variables on the conditional mean of the...

In this work, I construct an extended model of the Heckscher-Ohlin model, in which there is an assignment problem of how to assign workers to two types of endowments, skilled and unskilled labor. In the comparative statics for a small open economy, when product prices change, the outputs change more than in the HeckscherOhlin model. In the comparative statics for a whole economy, when consumer ...

1.Médico Residente de Neurocirurgia da Universidade Estadual de Campinas, Campinas-SP, Brasil (UNICAMP). 2.Neurocirurgião Assistente da Universidade Estadual de Campinas, Campinas-SP, Brasil (UNICAMP). 3.Neurocirurgião do Instituto de Ciências Neurológicas, São Paulo, Brasil (ICNE); Neurocirurgião Assistente da Disciplina de Neurocirurgia do Departamento de Neurologia da Universidade Estadual d...