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Maya Bone Tool Technologies At Ucanal, Guatemala, Jacob Harris

Electronic Theses and Dissertations

A key part of understanding Maya bone tool production is studying the rare assemblages containing bone tools and bone tool debitage. The Late Classic J-2 assemblage is a distinct composition of lithic, charcoal, human and animal bone at the site of Ucanal, Guatemala. The number of sites with high concentrations of fauna remains are well, and sites with high concentrations of worked bone is even rarer. This thesis is an analysis of the worked and unworked faunal elements excavated in 2019 from Operation 1B of the J-2 assemblage. The primary purpose of this thesis is to further understand Maya bone …

Normal Ethanol Sensitivity And Rapid Tolerance Require The G Protein Receptor Kinase 2 In Ellipsoid Body Neurons In Drosophila, Yuan Yuan Kang, Yusuke Wachi, Elizabeth Engdorf, Emiliano Fumagalli, Youyou Wang, Jennifer Myers, Shebna Massey, Antony Greiss, Shiyu Xu, Gregg Roman

Faculty and Student Publications

© 2020 The Authors. Alcoholism: Clinical & Experimental Research published by Wiley Periodicals LLC on behalf of Research Society on Alcoholism Background: G protein signaling pathways are key neuromodulatory mechanisms for behaviors and neurological functions that affect the impact of ethanol (EtOH) on locomotion, arousal, and synaptic plasticity. Here, we report a novel role for the Drosophila G protein–coupled receptor kinase 2 (GPRK2) as a member of the GRK4/5/6 subfamily in modulating EtOH-induced behaviors. Methods: We studied the requirement of Drosophila Gprk2 for naïve sensitivity to EtOH sedation and ability of the fly to develop rapid tolerance after a single …

Issue 353: July 23-August 6, 2020, The Local Voice

The Local Voice

No abstract provided.

Ectomycorrhizal Plant-Fungal Co-Invasions As Natural Experiments For Connecting Plant And Fungal Traits To Their Ecosystem Consequences, Jason D. Hoeksema, Colin Averill, Jennifer M. Bhatnagar, Edward Brzostek, Erika Buscardo, Ko-Hsuan Chen, Hui-Ling Liao, Laszlo Nagy, Nahuel Policelli, Joanna Ridgeway, J. Alejandro Rojas, Rytas Vilgalys

Faculty and Student Publications

Introductions and invasions by fungi, especially pathogens and mycorrhizal fungi, are widespread and potentially highly consequential for native ecosystems, but may also offer opportunities for linking microbial traits to their ecosystem functions. In particular, treating ectomycorrhizal (EM) invasions, i.e., co-invasions by EM fungi and their EM host plants, as natural experiments may offer a powerful approach for testing how microbial traits influence ecosystem functions. Forests dominated by EM symbiosis have unique biogeochemistry whereby the secretions of EM plants and fungi affect carbon (C) and nutrient cycling; moreover, particular lineages of EM fungi have unique functional traits. EM invasions may therefore …

Issue 352: July 9-23, 2020, The Local Voice

The Local Voice

No abstract provided.

Couple's Gift Helps Sustain University's Academic Foundation, Tina H. Hahn

University of Mississippi News

No abstract provided.

Gut Microbiomes Of Sympatric Amazonian Wood-Eating Catfishes (Loricariidae) Reflect Host Identity And Little Role In Wood Digestion, Mark Mccauley, Donovan P. German, Nathan K. Lujan, Colin R. Jackson

Faculty and Student Publications

© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. Neotropical wood-eating catfishes (family Loricariidae) can occur in diverse assemblages with multiple genera and species feeding on the same woody detritus. As such, they present an intriguing system in which to examine the influence of host species identity on the vertebrate gut microbiome as well as to determine the potential role of gut bacteria in wood digestion. We characterized the gut microbiome of two co-occurring catfish genera and four species: Panaqolus albomaculatus, Panaqolus gnomus, Panaqolus nocturnus, and Panaque bathyphilus, as well as that of submerged wood …

Microbiomes Of Caribbean Octocorals Vary Over Time But Are Resistant To Environmental Change, Mark Mccauley, Colin R. Jackson, Tamar Goulet

Faculty and Student Publications

The bacterial microbiome is an essential component of many corals, although knowledge of the microbiomes in scleractinian corals far exceeds that for octocorals. This study characterized the bacterial communities present in shallow water Caribbean gorgonian octocorals over time and space, in addition to determining the bacterial assemblages in gorgonians exposed to environmental perturbations. We found that seven shallow water Caribbean gorgonian species maintained distinct microbiomes and predominantly harbored two bacterial genera, Mycoplasma and Endozoicomonas. Representatives of these taxa accounted for over 70% of the sequences recovered, made up the three most common operational taxonomic units (OTUs), and were present in …

Issue 350: June 11-25, 2020, The Local Voice

The Local Voice

No abstract provided.

From Csi To Journalism To Mythology, Summer Camps Move Online, Michael Newsom

University of Mississippi News

UM Office of Pre-College Programs revamps programs to continue reaching younger students

Early Isotopic Evidence For Maize As A Staple Grain In The Americas, Douglas J. Kennett, Keith M. Prufer, Gyles Iannone, Brendan J. Culleton, Richard J. George, Mark Robinson, Willa R. Trask, Gina M. Buckley, Emily Moes, Emily J. Kate, Thomas K. Harper, Lexi O'Donnell, Erin E. Ray, Ethan C. Hill, Asia Alsgaard, Christopher Merriman, Clayton Meredith, Heather J. H. Edgar, Jaime J. Awe, Said M. Gutierrez

Faculty and Student Publications

© 2020 The Authors. Maize is a cultigen of global economic importance, but when it first became a staple grain in the Americas, was unknown and contested. Here, we report direct isotopic dietary evidence from 52 radiocarbon-dated human skeletons from two remarkably well-preserved rock-shelter contexts in the Maya Mountains of Belize spanning the past 10,000 years. Individuals dating before ∼4700 calendar years before present (cal B.P.) show no clear evidence for the consumption of maize. Evidence for substantial maize consumption (∼30% of total diet) appears in some individuals between 4700 and 4000 cal B.P. Isotopic evidence after 4000 cal B.P. …

Estimation Of Dynamic Bivariate Correlation Using A Weighted Graph Algorithm, Majnu John, Yihren Wu, Manjari Narayan, Aparna John, Toshikazu Ikuta, Janina Ferbinteanu

Faculty and Student Publications

© 2020 by the authors. Dynamic correlation is the correlation between two time series across time. Two approaches that currently exist in neuroscience literature for dynamic correlation estimation are the sliding window method and dynamic conditional correlation. In this paper, we first show the limitations of these two methods especially in the presence of extreme values. We present an alternate approach for dynamic correlation estimation based on a weighted graph and show using simulations and real data analyses the advantages of the new approach over the existing ones. We also provide some theoretical justifications and present a framework for quantifying …

Feasibility And Effectiveness Of A Telehealth Service Delivery Model For Treating Childhood Posttraumatic Stress: A Community-Based, Open Pilot Trial Of Trauma-Focused Cognitive-Behavioral Therapy, Regan W. Stewart, Rosaura Orengo-Aguayo, John Young, Megan M. Wallace, Judith A. Cohen, Anthony P. Mannarino, Michael A. De Arellano

Faculty and Student Publications

© 2020 American Psychological Association. Telepsychotherapy (also referred to as telehealth or telemental health), the use of videoconferencing to deliver psychotherapy services, offers an innovative way to address significant gaps in access to care and is being used to deliver a variety of treatments for youth. Although recent research has supported the effectiveness of telehealth delivery of a variety of interventions for children, the literature has focused very little on childhood posttraumatic stress disorder. This pilot study examined the feasibility and potential effectiveness of trauma-focused cognitive- behavioral therapy (TF-CBT) delivered via telepsychotherapy in community-based locations of either schools or patient …

More Pricks Than Kicks: The Southern Economy In The Long Twentieth Century, Peter A. Coclanis

Study the South

Most scholars and journalists working on the South would likely agree that over the past fifty or sixty years southern states on balance benefitted from a diverse, but generally reasonable and reasonably successful portfolio of policies and programs in the “economic development” space. The fact that the region is still the poorest, the unhealthiest, and the least educated in the United States, a half century or more after the beginning of the “Sunbelt boom” says a lot about the difficulty of extricating a region once it is headed down a pernicious economic path.

Issue 348: May 2020, The Local Voice

The Local Voice

No abstract provided.

Hiv-1 Tat Interactions With Opioids Are Modulated By Progesterone And Estradiol, Dejun Jackson

Honors Theses

HIV infection and combined substance abuse are comorbid epidemics. Previous studies show that concurrent opioid drug use may potentiate HIV-1-mediated neurotoxicity partly via interactions with opioids. Preclinical studies suggest that the HIV-1 trans-activator of transcription (Tat), an HIV regulatory protein, can synergize with opioids to exacerbate its already neurotoxic effects. However, its interactions with clinical opioids, such as oxycodone, have yet to be elucidated. Additionally, Tat disrupts a number of systems including the dopaminergic system, which contribute to its capacity to potentiate the rewarding effects of abused drugs. Although the neurotoxic effects of Tat may be inhibited by gonadal steroids …

Country Fun: A Cultural History Of Opryland Usa, Nashville, And The Suburban South, William C. Nieman

Honors Theses

This thesis centers around the history of Opryland USA, a theme park and “musical showplace” that existed from 1972 to 1997 in the suburbs of Nashville, Tennessee. Using a variety of primary sources including park ephemera, newspaper articles, and songs, I show how, over its twenty-five years, Opryland became a country music theme park after initially presenting a seemingly diverse picture of American popular music. I reveal that, despite local businessowners’ and musicians’ reluctance to embrace Opryland at first, the park was accepted by many Nashvillians to the point where it is now nostalgically mourned. Then, putting those primary materials …

"We Missed Our Youth": The Identity Formation Of Child Migrants, Refugees, And Jewish Children In France From 1940 To 1942, Michaela Maria Gouge Watson

Honors Theses

From 1940 – 1942, hundreds of Jewish children from Germany, Austria, Russia, and France were hidden from Nazi and Vichy French authorities in children’s homes in France. These homes were administered by the Oeuvre de Secours aux Enfants, a Jewish aid organization that assisted children in need during World War II. This study employs a quantitative content analysis of the testimonies of twenty Holocaust survivors who were hidden children in France between 1940 and 1942 to investigate to what extent the experience of outsider status and trauma affected these children’s personal and religious identity formation. The analysis finds that the …

Veridical And False Memory Performance As A Function Of The Timing Of High-Intensity Acute Exercise, Claire Sanderson

Honors Theses

Background: Our recent experimental work demonstrated that high-intensity acute exercise improved veridical (true) memories and also increased the rate of false memories. The present experiment was designed to re-evaluate these effects for replication purposes. We also extend this literature by evaluating whether these effects are influenced by the timing of acute exercise. Methods: The sample included young adults (N=37; M_age = 21.16 years). We employed a three-condition, within-group, counterbalanced controlled design, consisting of two exercise conditions and a control condition. The exercise conditions involved a 15-minute bout of high-intensity acute exercise. These conditions included the bout of …

Case Studies In Financial Accounting, Ian Ulmer

Honors Theses

The following thesis is intended to examine topics currently faced by accountants in the profession, in the areas of both technical proficiency and ethical theory, with an eye towards addressing potential areas of interest for accountants in the coming years. These case studies consist of established academic cases that use issues encountered and documented by several of the largest companies in the world to teach accounting theory, as well as cases in development by faculty of the Patterson School. These cases are designed to allow students to apply their previously theoretical knowledge of GAAP to case studies that document real-world …

“We Got More Yesterday Than Anybody”: Child Ghosts And The National Trauma Of Anti-Black Racism In American Literature, Megan Swartzfager

Honors Theses

This thesis examines the roles of haunting in the context of racial violence in three texts: Beloved by Toni Morrison, Sing, Unburied, Sing by Jesmyn Ward, and Wolf Whistle by Lewis Nordan. In each of these texts, a parent is responsible for the death of a child. In the former two texts, both by Black authors, a Black parent kills a Black child in what they believe to be a protective act in the face of violence by white people. Wolf Whistle, however, written by a white author, is animated by the ghost of a character based on Emmett Till. …

Methods To Detect Forgeries In Static Signatures, Jennifer Lauriello

Honors Theses

Statistical and machine learning approaches to forgery detection in offline sig- natures are attempted and evaluated. Offline signatures are static signatures found on physical media, mainly a piece of paper. A dataset of 330 signatures for 33 people is used, containing five genuine and five forged signatures for each person. The statistical analysis approach proves more successful than a machine learning approach, likely due to the size of the dataset.

Approaches Towards The Synthesis Of Ketamine Metabolites, Ann K. Patrick

Honors Theses

Major Depressive disorder (MDD) plagues society and stands at the forefront of research as MDD affects approximately 16% of the population. Pharmaceutical drugs, including the selective serotonin reuptake inhibitors (SSRIs), have been used for MDD treatment and remain a popular option today. However, current antidepressant treatments have proven to be ineffective in just less than half of the patients. Research continues with the goal to better understand the mechanisms of the pathology of depression and to search for other treatment options. For example, the stress-neurogenesis hypothesis investigates the role of stress and decreased neuroplasticity within MDD.

Supporting the stress-neurogenesis hypothesis, …

Success And Failure Of Indigenous Social Movements: A Comparative Case Study Of Ecuador And Chile, Jenna White

Honors Theses

This thesis is a comparative case study of the social movements of the Mapuche in Chile and the fourteen indigenous tribes in Ecuador. I study their social movements by utilizing the structural strain theory of social movements. This theory states that people in society experience deprivation, the people recognize the deprivation, a solution is proposed and this ideology is diffused to the society, events occur to begin motion of the movement, the society (including government) need to be open to change, and eventually there will be mobilization of resources in order to form a successful social movement. The dependent variable …

Investigating The Link Between Executive Function And Creativity In School Aged Children, Katherine Crenshaw

Honors Theses

The primary purpose of this research was to examine links between executive function (i.e., EF or conscious control) and creativity in school aged children. To accomplish this, participants completed measurements of creativity (i.e., Alternative Uses) and EF (i.e., the Backwards Digit Span to test working memory, the Delay of Gratification task to test inhibition). I also examined whether a creative manipulation (i.e., free coloring or coloring task-relevant materials) would impact EF performance in the Dimensional Card Change Sort (DCCS) focused on cognitive flexibility. While I did not find evidence for a relationship between my measures of EF and creativity, I …

Unplanned Pregnancy In The Mississippi Delta: Causes And Implications, Julia Grant

Honors Theses

This study seeks to understand the causes and implications of the abundance of adolescent pregnancy in the region known as the Mississippi Delta, where teenage childbearing is among the highest in the nation. To do so, this study reports and analyzes twelve interviews with young, African American, single mothers conducted by the author in the summer of 2019. This study relies on a narrative approach to research and analysis and employs the theoretical framework of Afrocentrism. As a result of the interviews, the author concludes that a blatant lack of sex education in the region is a powerful influence on …

The Relationship Between Glucocorticoids And The Humoral Immune Response To Mycoplasma Gallisepticum Challenges In Eastern Bluebirds, Joshua Smith

Honors Theses

Numerous studies have examined relationships between adrenal glucocorticoids and the immune system’s ability to fight disease. The relationship can vary, with glucocorticoids having either stimulatory or inhibitory effects. The pathogenic bacterium Mycoplasma gallisepticum (MG) elicits an adaptive immune response in birds, in which B cells produce MG-specific antibodies to fight the infection and prevent reoccurrence. Previous research found that Eastern Bluebirds that produce the most antibodies in response to MG infection also have the highest glucocorticoid levels. This finding led to the current study investigating whether corticosterone, the primary glucocorticoid in birds, stimulates production of antibodies in response to immune …

An Investigation Of The Practical Challenges To Using Molecular Genetic Techniques To Identify The Parasite Burdens Of Vertebrate Animals From Non-Invasive Sampling, Keely Ann Cox

Honors Theses

Molecular genetic techniques have become popular methods in ecology and wildlife conservation research. Advances in molecular genetic methods, particularly PCR (polymerase chain reaction), make it possible to amplify the numbers of specific DNA sequences from a sample with only a few original copies. Theoretically, the specificity of this approach should make it possible for wildlife biologists to identify and quantify the parasite and disease burden of endangered animals without being limited by the rarity of collaborators with expertise in the taxonomy of obscure parasite taxa. Because PCR requires just a small amount of DNA, the added benefit of a molecular …

The Embark® Protocol: Dog Genomics In Genetics Laboratories, Alexandra Kissel

Honors Theses

In a world of ever-advancing technology, it is imperative that young pre-health professionals are educated according to the most relevant research. One of the most fundamental, foundational concepts of health is genetics. This field is rapidly expanding, and quickly engraining itself into the realm of healthcare. Genetic testing and gene therapies, once subjects of science fiction, have become commonplace. It is more important than ever that health professionals have a concrete knowledge of genetics, and this begins with the proper education of pre-health students.

With this idea in mind, a laboratory protocol was designed for students of the Bisc 336 …

Regulating Neuronal Growth With Structurally Defined Glycans, Gabriella D. Hartman

Honors Theses

Chondroitin sulfate proteoglycans (CSPGs) and keratan sulfate proteoglycans (KSPGs) play an important role in neural development. Aggrecan, a CSPG, operates in the neural extracellular matrix where it negatively regulates neurite outgrowth to prevent aberrant process formation. Unfortunately, this aggrecan or CSPG-rich/KSPG-rich barrier can also prevent neuronal regeneration, which contributes to the inability to repair brain and spinal cord injuries. Removal of CSPGs and KSPGs has been shown to increase neurite outgrowth. We extend these findings by testing the ability of structurally-defined glycans to outcompete aggrecan and allow neurite outgrowth. Our overall goal is to determine if there is a particular …