A large fraction of microbial life on earth exists in complex communities where metabolic exchange is vital. Microbes trade essential resources to promote their own growth in an analogous way to countries that exchange goods in modern economic markets. Inspired by these similarities, we developed a framework based on general equilibrium theory (GET) from economics to predict the population dyna...

Central to most theories that explain the diversity of life is the concept that organisms face trade-offs. Theoretical work has shown that the precise shape of a trade-off relationship affects evolutionary predictions. One common trade-off is that between competitive ability and resistance to predators, parasitoids, pathogens or herbivores. We used a microbial experimental system to elucidate t...

since the evolution of public administration as an academic and scientific discipline, different competitive approaches have come forward in this area. public administration as a profession, a scientific field and a political process; or, public administration as an area totally distinguished from business management; and legal, political and administrative approaches towards public administrat...

Scholars and policy makers believe that democracy will bring prosperity through integration into the global economy via increased international trade. This study tests two theories as to why democracies might trade more. First, political freedom may be correlated with economic freedom, thus prompting higher levels of economic activity, thereby driving states to trade more. Second, democracy imp...

The paper documents the behavior of trade prices during the Great Trade Collapse of 2008–09 using transaction-level data from the U.S. Bureau of Labor Statistics. First, the paper finds that differentiated manufactures exhibited marked stability in their trade prices during the large decline in their trade volumes. Prices of nondifferentiated manufactures, by contrast, declined sharply. Second,...

This paper evaluates the new theories of trade and economic geography in the light of the pattern of regional specialisation in Southern Africa. The analysis is applied to the nine South African provinces and the SADC member countries of 1995, except Angola. Based on Gini coefficients, the regional specialisation of provinces and countries and dispersion/concentration of manufacturing employmen...

Economic trade between individuals, supported by an array of global electronic marketplaces, comprises an ever-growing proportion of the global economy. Prominent online companies like eBay, Amazon and Freelancer.com regularly afford individuals the opportunity to engage others the world over. Importantly, however, such trade has may introduce new hurdles. Though technology reduces the role of ...

M. Carrasco and B. McElree (2001) presented a speed-accuracy trade-off experiment, investigating covert attention in visual search. One of the conclusions from Carrasco and McElree was that adding distractors to a single feature search does not decrease the speed with which information is accumulated about target identity. We present a reanalysis of the relevant data from Carrasco and McElree i...