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The effects of forest age and management on bee communities of production forests in the southern United States
Get PDFProcesses structuring bee communities in agricultural landscapes are well-documented compared to those in other anthropogenic landscapes, like production forests. Forests across the temperate zone have historically been under-sampled, in part due to the perception that they provide little habitat to support diverse bee communities. While research suggests that early successional habitats support high levels of bee species richness and abundance, little empirical evidence exists to support the notion that forests, in turn, do not. To understand the relationship between forest successional age and major elements of the bee community, I sampled bees in a southern production pine forest in Hancock County, MS across 2012 and 2013. I found that while bee abundance declines with successional age, species richness does not. Combining this work with other recent research, I propose a generalized framework for understanding the role of disturbance and forest structure in structuring bee communities of southern forests
A Family of One\u27s Own: Reconstructing Queer Families of Color in Film
Get PDFI will focus on the resistance to white heteronormative depictions of the American family occurring within two contemporary films directed by gay black men—The Skinny, directed by Patrik-Ian Polk, and The Happy Sad, directed by Rodney Evans. These movies complicate understandings of black gay male relationships by humanizing the characters and providing clarity about the motivations behind the decisions these characters make. As opposed to simply associating their queerness and immorality, the directors of these films explore what brings people to the various social positions they occupy. In this way, these directors resist the tendency to pathologize either blackness or queerness (and blackness/queerness at the expense of one another). The films I use do not structure family through the heteronormative model of relationships. Of there is no sight or mention of actual biological family members. Despite these factors, the groups of people presented in these films display their love and affection for each other in ways that resist monolithic narratives about queer kinship. Additionally, I will argue that these narratives regarding black homosexuality are not attempting to fit inside the mold of the racialized patriarchal determinants of the family
Individual Differences in Adolescents’ Driving Practice during the Learner Stage
Get PDFThe implementation of Graduated Driver Licensing (GDL) policies has reduced the rate of car crashes among adolescents. However, limited research has focused on adolescents’ supervised driving during the learner permit stage of GDL. The study aimed to describe supervised driving practice during the learner permit stage and to test predictors of individual differences in the amount and the quality of supervised driving. 183 adolescents (M age = 16.4 years, 54.1% female) and their parents (84.1% mothers) participated. Adolescents reported driving an average of 25 minutes per day. Adolescents living in single-parent households, with less family income, and with a stronger motivation to drive reported more daily driving. Adolescents with a stronger motivation to drive reported driving in more settings. Discussion focuses on implications for developing effective driving-specific parenting strategies and helping to enrich adolescents’ supervised driving experiences
Economic Impact of the University of New Orleans, 2014-15
Get PDFThe purpose of this report is to estimate the total economic impact generated by The University of New Orleans in the New Orleans Metropolitan area economy during the fiscal year 2014-2015. This economic impact is comprised by total spending, total income, total employment, and total state and local tax revenues
3D Post-stack Seismic Inversion using Global Optimization Techniques: Gulf of Mexico Example
Get PDFSeismic inversion using a global optimization algorithm is a non-linear, model-driven process. It yields an optimal solution of the cost function – reflectivity/acoustic impedance, when prior information is sparse. The inversion result offers detailed interpretations of thin layers, internal stratigraphy, and lateral continuity and connectivity of sand bodies. This study compared two stable and robust global optimization techniques, Simulated Annealing (SA) and Basis Pursuit Inversion (BPI) as applied to post-stack seismic data from the Gulf of Mexico.
Both methods use different routines and constraints to search for the minimum error energy function. Estimation of inversion parameters in SA is rigorous and more reliable because it depends on prior knowledge of subsurface geology. The BPI algorithm is a more robust deterministic process. It was developed as an alternative method to incorporating a priori information. Results for the Gulf of Mexico show that BPI gives a better stratigraphic and structural actualization due to its capacity to delineate layers thinner than the tuning thickness. The SA algorithm generates both absolute and relative impedances, which provide both qualitative and quantitative characterization of thin-bed reservoirs
Exposing the “Shadow Side”: Female-Female Competition in Jane Austen’s Emma
Get PDFMany critics have examined the shifting nature of female friendship in Jane Austen’s Emma from cultural and historical angles. However, a comprehensive scientific analysis of female-female alliance and competition in the novel remains incomplete. The Literary Darwinist approach considers the motivations of fictional characters from an evolutionary perspective, focusing primarily on human cognition and behaviors linked to reproductive success, social control, and survival. While overt physical displays of male competition are conspicuous in the actions of the human species and those of their closest primate relatives, female aggression is often brandished psychologically and indirectly, which makes for a much more precarious study. In this paper, cultural criticism and evolutionary psychology work together to unravel the most complicated and arcane layers of intrasexual competition between women in Emma. Ultimately, this dual interpretation of the novel steers readers towards a deeper understanding of Emma Woodhouse’s imperiled friendships, and by extension, their own
Comparing Methods of Euthanasia and Gill Culture for Hypoxia Research on the Gulf Killifish, Fundulus grandis
Get PDFAquatic hypoxia, or low dissolved oxygen, is a growing environmental concern and has detrimental effects on many fishes. Research on fish responses to hypoxia includes whole animal studies as well as organ culture systems. In this thesis, the gulf killifish, Fundulus grandis, was used to determine the interaction between hypoxic exposure and four common euthanasia techniques on selected blood and gill variables and to develop an in vitro gill incubation system. Euthanasia techniques had differential effects on blood and gill, with the common fish anesthetic MS-222 having the greatest effects, but none altered the response to hypoxia. During the development of gill culture, the highest gill viability was measured in isosmotic seawater medium and shorter incubation times. This study provides insight into the applicability of different euthanasia techniques in hypoxia research, as well as preliminary observations on an incubation system for isolated gills
Survey of Likely Louisiana Voters for 2016 Senate Runoff
Get PDFThe University of New Orleans’ Survey Research Center (SRC) sponsored an automated interactive voice response (IVR) telephone survey of 776 active registered voters in Louisiana on Tuesday, December 6, 2016. We asked likely voters who they preferred in the 2016 Senate runoff election and whether they thought Obamacare should be repealed. The poll shows that the Republican candidate John Kennedy has a comfortable lead over his Democratic challenger, Foster Campbell. We asked respondents whether they believed Obamacare should be repealed. Likely Louisiana voters back the idea of repealing the healthcare law by a two-to-one margin
Anxiety and Differences in Physiological Responding to Ambiguous Situational Vignettes in Adolescents
Get PDFResearch has documented a tendency among youth to have biased interpretations of ambiguous information. For example, anxious youth are more likely to interpret ambiguous situations as negative or threatening (e.g., Cannon & Weems, 2010). Similarly, when interpreting social cues, aggressive youth exhibit hostile attribution biases more often than non-aggressive youth in response to ambiguous situations (e.g., Crick & Dodge, 1996). Research suggests that youth with anxiety and aggression exhibit differential physiological reactivity in response to threat. However, research has yet to examine the linkages amongst physiological reactivity to ambiguous situations, anxiety, and aggression in adolescents. The current study had several interrelated aims. Youths’ physiological responding (i.e., heart rate and skin conductance) to a series of animated vignettes depicting ambiguous social situations was examined. Anxiety, aggression, and hostile attributional bias (HAB) were also tested as predictors of differential physiological responding to the vignettes, as well as the interrelations between anxiety and HAB and aggression and HAB.
Eighty youth completed a physiological assessment in which they viewed a series of hypothetical situational vignettes while their heart rate and skin conductance were measured. Participants also completed questionnaires measuring symptoms of anxiety, aggression, and HAB. Results indicated that there was differential physiological responding to the vignettes such that participants’ heart rates showed a pattern of deceleration followed by acceleration across time. Physiological responses were predicted by HAB such that those with high HAB had higher heart rates and exhibited more pronounced deceleration and acceleration across time than those with low HAB. There was support for anxiety as a significant predictor of responses among those participants with higher levels of HAB such that heart rates remained elevated with very little deceleration across time, suggesting a pattern of physiological hyperarousal and blunted reactivity. However, aggression did not predict differential physiological responding to the ambiguous vignettes, nor did HAB moderate the association between aggression and physiological responding. These findings add to the literature by contributing to knowledge about physiological responding to ambiguous situations and associations between this link with anxiety, aggression, and HAB