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Full-Text Articles in Life Sciences

Utilizing Remote Sensing And Geospatial Techniques To Determine Detection Probabilities Of Large Mammals, Patricia A. Terletzky Aug 2013

Utilizing Remote Sensing And Geospatial Techniques To Determine Detection Probabilities Of Large Mammals, Patricia A. Terletzky

All Graduate Theses and Dissertations

Whether a species is rare and requires protection or is overabundant and needs control, an accurate estimate of population size is essential for the development of conservation plans and management goals. Wildlife censuses in remote locations or over extensive areas are logistically difficult, frequently biased, and time consuming. My dissertation examined various techniques to determine the probability of detecting animals using remotely sensed imagery. We investigated four procedures that integrated unsupervised classification, texture characteristics, spectral enhancements, and image differencing to identify and count animals in remotely sensed imagery. The semi-automated processes had relatively high errors of over-counting (i.e., greater ...


Selected Neuropharmacology Of Resurgence, Adam D. Pyszczynski Aug 2013

Selected Neuropharmacology Of Resurgence, Adam D. Pyszczynski

All Graduate Theses and Dissertations

Resurgence refers to the reappearance of an extinguished operant behavior when reinforcement for an alternative behavior is also discontinued. It is especially relevant to the reappearance of problem behavior because many behavioral interventions discontinue reinforcement for aberrant behavior while simultaneously reinforcing an appropriate response. Existing information about the neuropharmacology of resurgence is scarce, but suggests overlap between drug seeking observed in the resurgence model and drug seeking observed in the more widely studied reinstatement and renewal models. The aim of this dissertation was to explore additional neural systems relevant to reinstatement and renewal preparations within a resurgence paradigm to assess ...


Nutritional And Economic Analysis Of Small-Scale Agriculture In Imbaburra, Ecuador, Jake Erickson May 2013

Nutritional And Economic Analysis Of Small-Scale Agriculture In Imbaburra, Ecuador, Jake Erickson

All Graduate Theses and Dissertations

Nutritional and Economic Analysis of Small-Scale Agriculture in Imbabura, Ecuador Intervention projects in the developing world normally aim to satisfy either the nutritional needs of a group, or advancing the economic stability, but not both. One of the many issues that may arise by narrowly focusing and creating an aid program is that although a group may be fed, they are not equipped to mitigate risks that will arise after project completion and thus continue or revert back to a malnourished state. A bridge is required to join the economic and nutritional programs to create aid interventions that are sustainable ...