Phosphorus runoff has generated water quality degradation, spawning legislative and regularity actions in several watersheds in Northwest Arkansas. Best management practices (BMPs) can be viable alternatives in dealing with nutrient excess. The profitability of several BMPs deemed effective in...

Preliminary results of a survey of agricultural and non-agricultural stakeholders in the Lincoln Lake Watershed suggests discrepancies exists in different groups perceptions of water quality, the sources of water pollution, and the roles of local, county, state and federal officials in meeting...

This poster describes the integration of life cycle costing capabilities into a life cycle assessment model of greenhouse gas emissions for US swine production. Combining both tools allows for a sustainable analysis of a process to identify potential production practices which are...

Scores of US and Canadian universities' undergraduate students participate in the SS-AAEA Quiz-bowl competition annually. Surveys of the 2001 through 2005 competition participants suggest how beneficial competition preparation and participation are in completing related university work and...

We review the concept of intra-class correlation in random-effects models for binary outcomes as estimated by Stata's xtprobit, xtlogit, and xtclog. We consider the usual measures of correlation based on a latent variable formulation of these models and note corrections to the last two...

We describe a method for fitting the Coale-Trussell model to fertility rates or to counts of births and exposure by single years of age. The procedure maximizes a quasi-likelihood function and can easily be implemented using standard software. An extension to handle covariates is discussed.

Two opposing hypotheses were proposed to explain the life course pattern in the effect of education on mortality: “cumulative advantage,” where the education effect becomes stronger with age, and “age-as-leveler,” where the effect becomes weaker in old age. Most empirical studies bring...