A shortcoming of most empirical studies on aggregate exports is their exclusive focus on the demand side. Moreover, the … and supply simultaneously and incorporates a new proxy for globalization. Owing to the non-stationarity of the data, the … relationships are found and identified as export supply and demand. Overidentifying restrictions derived from economic theory are …

as well as support for foreign investments are important means to foster energy efficiency. However, economic efficiency …The efficiency of electricity generation in hard coal fired power plants varies considerably from country to country … abundance of hard coal or relatively low costs of extraction show smaller degrees of efficiency than countries with poor …

have boosted the global demand for cocoa. However, world cocoa supply could barely keep up with demand. These processes …