New techniques, both theoretical and practical, are presented for constructing permutation representations for computing with matrix groups defined over finite fields. The permutation representation is constructed on a conjugacy class of subgroups of prime order. We construct a base for the permutation representation, which in turn simplifies the computation of a strong generating set. In addit...

OBJECTIVE We assessed income tax check-offs, specialty license plates, and lottery tickets as ways states raise funds for the early detection and prevention of breast cancer. METHODS We conducted an inventory of state legislation allowing these revenue-generating methods, and collected and compared information on each initiative. We conducted logistic regression analyses to compare these meth...

Undertaking non-agrarian income-generating activities to reduce overreliance on agriculture, production failures, and income fluctuations is a household-amenable, self-insurance mechanism, which provides employment opportunities capital investment. This article examines the determinants of participation in non-farm effect household income. Heckman two-step procedure was used analyze three-wave ...

In recent years, there has been increasing emphasis in the rural development literature on the multiple income-generating activities undertaken by rural households and the importance of assets in determining the capacity to undertake these activities. Controlling for endogeneity choice and applying Lee's generalization of Amemiya's two-step estimator to a simultaneous equation model, household ...

BACKGROUND To explore the hypothesis that sight restoring cataract surgery provided to impoverished rural communities will improve not only visual acuity and vision-related quality of life (VRQoL) but also poverty and social status. METHODS Participants were recruited at outreach camps in Tamil Nadu, South India, and underwent free routine manual small incision cataract surgery (SICS) with in...

BACKGROUND We previously observed that behavioral economic factors predict naturalistic heroin seeking behavior that correlates with opioid seeking in the experimental laboratory. The present study sought to replicate and extend these prior findings with regular cocaine users. METHODS Participants (N=83) completed a semi-structured interview to establish income-generating and cocaine-purchasi...