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Habitat suitability modeling for the Mississippi Sandhill Crane, Grus canadensis pulla
Get PDFIn this study, I modeled the suitability of habitat on the Mississippi Sandhill Crane National Wildlife Refuge for the federally endangered Mississippi Sandhill Crane (Grus Canadensis pulla). Habitat type and suitability changed over time due to seasonality of vegetation and succession in the absence of burning. Cranes used highly suitable habitat more in the non-growing than in the growing season, and may have been more constrained by resource availability during winter months. Cranes used some less-suitable areas including cypress drains, which provide roosting sites, and supplemental food plots. The mismatch between predicted quality and crane use suggests that no single habitat provides all resources required for the population to persist. Prescribed burning to maintain grassland habitat is essential for maintaining high quality habitat for cranes. The relative availability of food on supplemental food plots and grasslands, as well as the behavior of cranes toward roads, require additional investigation
Using Hamlet and Peter Pan: Family Issues, Ghosts, and Memory in Bret Easton Ellis\u27s Lunar Park
Get PDFThis thesis discusses the ways in which Bret Easton Ellis uses Hamlet and Peter Pan as sources in his novel Lunar Park
Impact of Positive Parenting Behaviors and Children’s Self-Control on Levels of Externalizing Behavior Problems during Early Childhood
Get PDFThis study investigated the impact of parenting and children’s self-control on children’s externalizing behavior problems among 167 predominantly African-American mothers and their 2-year-old children. Two hypotheses were considered based on two distinct theoretical origins of self-control. First, consistent with a behavioral perspective, exposure to positive parenting was hypothesized to indirectly affect externalizing behaviors through children’s self-control; that is, children’s self-control was expected to mediate the association between positive parenting and externalizing behaviors. Second, consistent with a temperamental perspective, self-control was expected to moderate the impact of positive parenting on levels of children’s externalizing behaviors such that only children with a propensity towards low self-control benefited from positive parenting. Results were not consistent with the mediational hypothesis and provided limited support for the moderational hypothesis. That is, only for children with characteristically low self-control was exposure to more positive parenting associated with fewer externalizing behavior problems, as rated by teachers, one year later
2016 Survey of Registered Republicans for Louisiana Presidential Primary
Get PDFThe University of New Orleans’ Survey Research Center sponsored an automated telephone survey of active registered Republican voters in Louisiana Wednesday March 2, 2016. The sample for the survey was randomly selected from all active registered Republicans in the state. The respondent sample of 1,874 yields a 2.26% margin of error at a 95% level of confidence. The sample matches the gender, age, race, and regional parameters from the voter file obtained from the Louisiana Secretary of State
The new normal? Climate variability and ecoviolence in sub-Saharan Africa
Get PDFClimate change presents a wide range of concerns that can jeopardize international security. Among those concerns are neo-Malthusian worries of diminishing natural resources. Predictive models suggest that rainfall and temperature anomalies have the potential to reduce water basins, crop production, increase land degradation among other perils that threaten human security. This concern is particularly true in sub-Saharan Africa given the region’s strong dependence on rain-fed agriculture. Despite strong claims from various world leaders and scientists of a direct climate-conflict nexus, little empirical evidence has been devoted to find a systematic causal pathway of this kind. What is more, the literature not explored the relationship between climate change and low-intensity forms of social unrest. Therefore, contrary to most of the literature that explores a direct climate-conflict relationship, this dissertation contributes to the literature along two lines. First, it explores the relationship between climate change and socio-political unrest. Second, rather than simply assume a direct relationship between climate shocks and conflict, this dissertation examines: a) the effects of climate change on food scarcity, and the impact of that scarcity, in turn, on the likelihood of social unrest and conflict, and b) the effects of climate change on land degradation, that the impact of that degradation, in turn, on the frequency of communal violence
Creating Healthy Urban Environments: Commercial Landscaping, Preference and Public Health
Get PDFLandscape development[1] can provide many benefits, including the reduction of stormwater runoff and the creation of habitats for wildlife. It can also provide health benefits. Researchers, such as Roger Ulrich and Rita Berto have demonstrated that views of trees and other vegetation are associated with lower blood pressure and reduced recovery times in hospitals and that environments with more natural elements may lessen mental fatigue (R. Ulrich 1984) and (Berto 2005).
As rebuilding in New Orleans continues 11 years after Hurricane Katrina, landscape development has been limited or lacking, especially in the redevelopment of commercial properties. Two prominent reasons for this deficiency are a lack of funding and, until August of 2015, the absence of a comprehensive landscape ordinance.
The purpose of the research presented here is to determine the degree to which community residents express a preference for healthier commercial environments. As part of my research, I measured community perceptions of four potential redevelopment concepts for a blighted strip shopping center utilizing attention restoration theory (ART), which postulates that certain environmental qualities contribute to reductions in mental fatigue. I found that commercial environments with the most quality landscaping[2] are those that neighborhood residents most prefer and are most conducive to better health.
Keywords: mental fatigue, attention restoration theory, perceived restoration scale, commercial landscape quantity, public health, healthy urban environment
[1] Refer to operational definitions (pages 4-6).
[2] Refer to operational definitions (pages 4-6)
Neural Mechanisms of Action Switching Moderate the Relationship Between Effortful Control and Aggression
Get PDFAggression and violence are social behaviors that exact a significant toll on human societies. Individuals with aggressive tendencies display deficits in effortful control, particularly in affectively charged situations. However, not all individuals with poor effortful control are aggressive. This study uses event-related potentials (ERPs) to decompose the chronology of cognitive functions underlying the link between effortful control and aggression. Specifically, this study investigates which ERPs moderate the effortful control - aggression association. We examined three successive ERP components (P2, N2 and P3) for stimuli that required effortful control. Results indicated that N2 activation, but not P2 or P3 activation, moderated the relationship between effortful control and aggression. These effects were present in negative and neutral contexts. This moderating effect was consistent with previous studies linking neural processing efficiency with reduced activation during cognitive control tasks. Our results suggest that efficient cognitive processing moderates the association between effortful control and aggression
The Transcription Factors ADR1 or CAT8 are Required for RTG Pathway Activation and Evasion from Yeast Acetic Acid-Induced Programmed Cell Death in Raffinose
Get PDFYeast Saccharomyces cerevisiae grown on glucose undergoes programmed cell death (PCD) induced by acetic acid (AA-PCD), but evades PCD when grown in raffinose. This is due to concomitant relief of carbon catabolite repression (CCR) and activation of mitochondrial retrograde signaling, a mitochondria-to-nucleus communication pathway causing up-regulation of various nuclear target genes, such as CIT2, encoding peroxisomal citrate synthase, dependent on the positive regulator RTG2 in response to mitochondrial dysfunction. CCR down-regulates genes mainly involved in mitochondrial respiratory metabolism. In this work, we investigated the relationships between the RTG and CCR pathways in the modulation of AA-PCD sensitivity under glucose repression or de-repression conditions. Yeast single and double mutants lacking RTG2 and/or certain factors regulating carbon source utilization, including MIG1, HXK2, ADR1, CAT8, and HAP4, have been analyzed for their survival and CIT2 expression after acetic acid treatment. ADR1 and CAT8 were identified as positive regulators of RTG-dependent gene transcription. ADR1 and CAT8 interact with RTG2 and with each other in inducing cell resistance to AA-PCD in raffinose and controlling the nature of cell death. In the absence of ADR1 and CAT8, AA-PCD evasion is acquired through activation of an alternative factor/pathway repressed by RTG2, suggesting that RTG2 may play a function in promoting necrotic cell death in repressing conditions when RTG pathway is inactive. Moreover, our data show that simultaneous mitochondrial retrograde pathway activation and SNF1-dependent relief of CCR have a key role in central carbon metabolism reprogramming which modulates the yeast acetic acid-stress response