The aerial spray prediction model AgDRIFT embodies the computational engine found in the near-wake Lagrangian model AGricultural DISPersal (AGDISP) but with several important features added that improve the speed and accuracy of its predictions. This article summarizes those changes, describes the overall analytical approach to the model, and details model implementation, application, limits, a...

A serologic study of Toxoplasma antibodies among 501 foreign migrant workers in Malaysia was conducted in a plantation and detention camp. The highest prevalence rate of 46.2% was among Nepalese workers. Statistical analysis indicated the IgG positivity rate among local residents was significantly higher than the migrants studied (p < 0.05). The IgM positivity rate showed no significant differe...

War has devastating implications for families, communities, cultures, economies, and state infrastructure. Similarly, the last decade has seen an increase in the number of attacks against health workers in conflict zones and unstable environments. Unfortunately, these attacks have grave consequences for local populations which often rely on foreign aid programs for their health and well-being. ...

Identifying group members and individuals' status within a group are fundamental tasks in animal societies. For ants, this information is coded in the cuticular hydrocarbon profile. We manipulated profiles of the ant Odontomachus brunneus to examine whether the releaser and primer effects of fertility signals are dependent on chemical context. Fertility status is signalled through increased abu...

This paper presents a model which captures the technological spillovers created by foreign direct investment in Transition Economies. Skill-biased technological change is linked with endogenous labor supply which allows for unemployment. The technological spillover is divided into a neutral technological change and a skill-biased technological change. The first effect makes labor and capital mo...

Recent media and government reports suggest that immigrants are more likely to hold jobs with poor working conditions than U.S.-born workers, perhaps because immigrants work in jobs that "natives don't want." Despite this widespread view, earlier studies have not found immigrants to be in riskier jobs than natives. This study combines individual-level data from the 2003-2005 American Community ...

Immigration to the UK, particularly among more educated workers, has risen appreciably over the past 30 years and as such has raised labor supply. However studies of the impact of immigration have failed to find any significant effect on the wages of native-born workers in the UK. This is potentially puzzling since there is evidence that changes in the supply of educated natives have had signif...

Multiple functional queens in a colony (polygyny) and multiple mating by queens (polyandry) in social insects challenge kin selection, because they dilute inclusive fitness benefits from helping. Colonies of the ant Plagiolepis pygmaea brash contain several hundreds of multiply mated queens. Yet, within-colony relatedness remains unexpectedly high. This stems from low male dispersal, extensive ...

In this article, I explore the kinship imaginaries that emerged between gay male tourists from North America and Europe and Cuban male sex workers and their families within the context of Havana’s queer-erotic economies. Whereas male sex workers throughout Latin America and the Caribbean tend to conceal their male clients from their families, Cuban sexual laborers in this study incorporated que...

This paper studies the effect of changes in foreign competition on the incentives faced by U.S. managers through wage structures, promotion profiles and job turnover. We use a panel of executives and measure foreign competition as import penetration. Using tariffs and exchange rates as instrumental variables, we estimate the causal effect of globalization on the labor market outcomes of these w...