Digital Commons Network^™

Tootling With A Randomized Independent Group Contingency In A High School Setting, John Dylan Ken Lum

Dissertations

Tootling is a procedure where students report their classmates’ positive and prosocial behavior. The present study examined the effects of tootling on students’ disruptive and academically engaged behavior in three general education high school classrooms. An A-B-A-B withdrawal design was used to assess the effects of the intervention. Students wrote tootles anonymously on paper slips and placed them into a marked container. Unlike previous tootling studies, a randomized independent group contingency procedure was used to reward the students to reduce the number of steps required to implement the intervention. At the end of the class period, teachers randomly drew three …

The Effects Of Interrelated Goals, Anxiety, And Mindfulness On Somatic Symptoms, Liesel Christoe-Frazier

Dissertations

The present study investigated the interrelationships between interrelated goals, anxiety, somatic symptoms, and mindfulness among a sample of undergraduate college students (n = 454). Structural equation modeling was used to develop a well-fitting model based on collected data. Results showed that goal conflict was positively associated with higher levels of anxiety and somatic symptoms. Anxiety was found to mediate the relationship between goal conflict and somatic symptoms. Goal facilitation was found to be unrelated to anxiety and somatic symptoms. Mindfulness was not found to moderate the relationship between anxiety and somatic symptoms, but was found to be negatively related to …

Effects Of Early Adolescent Exposure To D-Amphetamine In A Rodent Model Of Nicotine Reward, Eric Louis Harvey

Dissertations

Previous studies with rodents have found that adolescent exposure to psychoactive drugs can alter neurophysiology and produce behavioral effects that persist into adulthood. While several studies have examined the effects of adolescent exposure to nicotine on the subsequent rewarding value of various drugs of abuse in adulthood, to date, no known studies have examined the converse of this relationship. d-Amphetamine (i.e., dextroamphetamine, ProCentra®) is a potent psychostimulant that is commonly used in the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD) in adolescents. The present study assessed the effects of adolescent exposure to d-amphetamine on the rewarding value of nicotine in …

Elucidating Mechanisms Of Protein Aggregation In Alzheimer’S Disease Using Antibody-Based Strategies., Benjamin A. Colvin

Dissertations

Alzheimer’s Disease (AD) is a devastating neurodegenerative disorder. There are two characteristic histopathological hallmarks in the brain: senile plaques and neurofibrillary tangles, composed of insoluble aggregates of the amyloids Amyloid-β (Aβ) and tau protein, respectively. These diagnostic markers, though distinctive, are not apparent effectors of AD pathology. Evidence has mounted suggesting smaller soluble aggregates (oligomers) of Aβ or tau are the true drivers of disease progression. This dissertation presents several amyloid biophysics projects. Aggregate biophysical parameters such as weight, shape, and conformation were measured using a range of methodologies, including Multiangle Light Scattering, Dynamic Light Scattering, UV-Circular Dichroism, UV-Fluorescence, Scanning …

Teachers’ Perceptions Of Educational Games That Keep Score Of Cooperative Performances, Theodore Alden Wohlfarth

Dissertations

The scoring systems used in traditional sports and games are founded on the zero-sum premise that players are on opposite sides and one side can win only if the other side loses. These scoring systems may be effective at nurturing zero-sum mindsets and providing data for assessing performance in win-lose relationships. If so, games that use different scoring systems can be used to facilitate the development of collaborative mindsets, nurture win-win skills between diverse groups, and enable objective self-assessment of performances in non-zero-sum events when engaging with those on “other sides.” Although economic game theory has rich reservoirs of research …

The Doll Project As A Liberatory Art Intervention For Conscious Raising And Trauma Relief In A Chicago Marked By Violence, Rochele A. Royster 5453127

Dissertations

Abstract

This community/arts based participatory research project encompassed communal art making practices (art as therapy) to build community, heal and resist systemic oppression and community violence; as well as promote self-care, empowerment, and a sense of purpose. Participants engaged in community-based art therapy to build and heal communities impacted by gun violence; using an ecological model. This "Doll Project" developed as a grassroots approach to arts-based social change, an ongoing cycle of creation, reflection and action with the hope to create a wave of healing and understanding through impacted Chicago communities. This process was intended to engage communities and embody …

Neuroimaging And Cognitive Outcomes In Adults With Human Immunodeficiency Virus And Early Life Stress, Laurie M. Baker

Dissertations

Brain abnormalities persist in individuals with human immunodeficiency virus (HIV) despite the use of highly active antiretroviral therapy (HAART). To date, limited work has focused on the association between early life stress (ELS) and brain integrity in individuals with HIV, although ELS is highly prevalent in this population. The present study was conducted to determine whether ELS corresponds to the expression of persistent HIV–related neuroimaging abnormalities and cognitive dysfunction. A total of 130 HIV+ individuals on HAART and 76 HIV– individuals underwent 3T structural magnetic resonance imaging, diffusion tensor imaging, and neuropsychological assessment. Individuals were free of major psychiatric illness …

Discriminative And Reinforcing Effects Of Cocaine-Levamisole Combinations, Zachary J. Zimmermann

Dissertations

The behavioral and neurochemical effects of cocaine are well established, and it is one of the most widely abused illicit drugs. Illicit cocaine is often adulterated with levamisole, which is an anthelmintic that was withdrawn from the U. S. market in 2000. It has been hypothesized that levamisole, unlike other common adulterants which are added as simple bulking agents, has effects of its own which may be responsible for its use as an adulterant. Although these effects are speculative, the addition of levamisole to cocaine has become an increasing public health concern, as serious adverse effects (e.g., vasculitis, neutropenia) of …

Regulation Of Mtorc1 By Homocysteine And Its Effects On Autophagy In Human And Mouse Neuronal Tissues, Khoosheh Khayati

Dissertations

The molecular mechanisms leading to and responsible for age-related, sporadic Alzheimer’s disease (AD) remain largely unknown. It is well documented that aging patients with elevated levels of the amino acid metabolite homocysteine (Hcy) are at high risk of developing AD. The impact of Hcy on molecular clearance pathways in mammalian cells, including in-vitro cultured induced pluripotent stem cell-derived forebrain neurons and in-vivo neurons in mouse brains is investigated in this research project. Exposure to high Hcy levels results in up-regulation of the mechanistic target of rapamycin complex 1 (mTORC1) activity, one of the major kinases in cells that is tightly …

Systematics, Biogeography, And Species Delimitation Of The Malagasy Psorospermum (Hypericaceae), Heritiana S. Ranarivelo

Dissertations

Psorospermum belongs to the tribe Vismieae (Hypericaceae). Morphologically, Psorospermum is very similar to Harungana, which also belongs to Vismieae along with another genus, Vismia. Interestingly, Harungana occurs in both Madagascar and mainland Africa, as does Psorospermum; Vismia occurs in both Africa and the New World. However, the phylogeny of the tribe and the relationship between the three genera are uncertain. Using freshly collected specimens from my fieldwork as well as extant herbarium specimens, I aimed first, to generate a phylogeny of Psorospermum; second, to investigate its biogeography; and third, to investigate species boundaries within Malagasy Psorospermum …

Population Structure, Connectivity, And Phylogeography Of Two Balistidae With High Potential For Larval Dispersal: Balistes Capriscus And Balistes Vetula, Luca Antoni

Dissertations

The gray triggerfish (Balistes capriscus) and the queen triggerfish (Balistes vetula) are two exploited reef fish distributed in tropical and temperate shelf waters of the Atlantic Ocean and the Mediterranean Sea. Both species are highly sedentary as adults but disperse pelagic larvae for extended periods of time potentially allowing connectivity across long distances under the action of oceanic currents. In this work population structure, phylogeography, and migration patterns were examined in the two species and contrasted with predictions of larval transport based on surface circulation data. A total of 1,017 gray triggerfish from twelve sampling localities …

Applying Affective Engagement To Change Organizational Culture: A Secondary Analysis Of Sexual Assault Prevention And Reporting Curriculum Outcomes On U.S. Air Force Technical Training Campuses, Stephen Bryce Ellis

Dissertations

Sexual assault, sexual harassment, and unprofessional relationships are inconsistent with U.S. Air Force vision to foster a culture that promotes dignity and respect. These problems reduce military readiness and retention of talented personnel while increasing costs to taxpayers. To combat these problems, the U.S. Air Force revised its sexual assault prevention and reporting curriculum to employ affective engagement techniques at four technical training campuses. Curriculum developers employed plausible vignettes, storytelling, and classroom debate to create an emotional connection to the sexual assault prevention and reporting lessons. The objective of the revised curriculum was to change the organizational culture to one …

"Her Splendid Children Will Be Born Here”: Anglo-American Relations And Sexual Selection In Transatlantic Fiction, 1870–1914, Jennifer Lynn Robertson

Dissertations

In recent decades, scholars have sought to examine the discourse of evolutionary theory in the realist novel. This dissertation examines the ways in which the novel form embodied evolutionary theory by examining Anglo-American courtship plots. In chapter 2, I examine Charles Glascock’s courtship of Caroline Spalding in Anthony Trollope’s He Knew He Was Right. During their courtship, Caroline’s dominant behaviors subvert traditional hierarchies between nations, classes, and genders. However, the open plot of evolutionary change hints at a revolutionary restructuring of social relations. I argue that Caroline and Glascock’s relationship reverts to a more traditional power structure upon their …

Optimizing Stadium Evacuation By Integrating Geo-Computation And Affordance Theory, Joslyn Jane Zale

Dissertations

The purpose of this project was to optimize football stadium evacuation time by integrating geo-computation with affordance theory from perceptual psychology to account for evacuee characteristics: age, gender, physical fitness, alcohol consumption, and prior experience attending football games at The University of Southern Mississippi (USM), evacuating from large, outdoor public places, and with hazard events.

According to the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism (USA PATRIOT) Act, football stadiums are part of the country’s critical infrastructure warranting special government protection. Evacuation modeling was identified as an important component of game day emergency …

Groundhogs, Tanya Mason Smith

Dissertations

This dissertation contains a collection of stories that explore loss and grief, illness and disability, parent and child relationships, and marriage and its expectations within the gay community and the south.

Educational Technology And Visual Literacy: The Effect Of Using Doodling On Student Learning Performance, Alaa J A M Zeyab

Dissertations

Visual literacy is one of the facets of educational technology that has a significant role in the learning process. Meaningful doodling was a technique researched in this study as a form of visual literacy. The purpose of this study was to explore the effect of meaningful doodling on the learning process and how this affected student learning performance. A mixed method design was used, which included the use of surveys of students in two classes that used doodling and by interviewing three teachers who regularly used doodling as a learning tool. The results suggested students enjoyed doodling and meaningful doodling …

Coaches’ Perceptions On The Sustainability Of Select Nonrevenue, Olympic Ncaa Sports As Viewed Through Stakeholder Theory, Dean M. Ekeren

Dissertations

In recent years, increasing revenues to the top NCAA athletic programs has accelerated an athletic “arms race” among universities, where coach salaries escalate, new facilities are built, existing facilities undergo massive renovations, and amenities and services are added for athletes, all to attract top recruits and new donors. Although sponsors and broadcast deals provide huge sources of revenue to these institutions, the majority of athletic departments rely on subsidies from the university to meet the increasing demands required to remain competitively relevant. Many stakeholder groups of intercollegiate athletics are becoming increasingly concerned that the financial pressures associated with sustaining the …

Click, Explore, And Learn: Graduate Students’ Experiences And Attitudes Toward Using E-Books For College-Level Courses, Rasha Abdulrahman Alhammad

Dissertations

The main purpose of this qualitative research was to explore graduate students’: (a) interpretations of their experiences with the use of e-books for learning; (b) reasons that influence their preference to use e-books or printed books when they learn; (c) perceptions toward e-books impact on learning; (d) perceptions toward the influence of prior technological experience, knowledge, and confidence on opinions and decisionmaking associated with e-books; (e) interpretations of their experiences with the use of a given e-book; and (f) recommendations of changes to e-books to better supporting their learning. Participants were 20 graduate students at one of the midsize universities …

Dating_Missrepresentation.Com: Black Women's Lived Love-Hate Relationship With Online Dating, James Henry Johnson

Dissertations

The increased use of online dating sites has further encouraged corporations’ attempts to capitalize on these mate-seeking trends. Match.com, eHarmony, and OkCupid are primary competitors in a growing market of individuals seeking out potential romantic partners. They offer several mainstream dating options as well as niche-dating sites. Similar to society at large where dating still occurs offline, scholars have revealed that racial hierarchies exist within various online platforms. As such, the roles of gender and ethnicity in online dating environments merit study. Specifically, the experiences of Black women who use Internet dating sites, a virtually unexplored demographic, form the basis …

Pragmatic Understanding Of Bottlenose Dolphins (Tursiops Truncatus) Use Of A Two-Way Communication System, Pepper Reid Hanna

Dissertations

Pragmatics focuses on how a communication system is used to achieve a communicative goal, the social context of the communication, and the organizational structure of communications (Horn & Ward, 2004; McLaughlin, 1998). There is evidence of pragmatics within animal communication systems. For example, context appears to be an important component in both signal production and a receiver’s response in vervet monkeys (Seyfarth et al. 1980).

MA Thesis: http://aquila.usm.edu/masters_theses/170/

The current study used an underwater keyboard to establish a two-way communication system between humans and dolphins. The purpose of this study was to determine if, under these conditions, dolphins displayed pragmatic …

Environmental Contaminant Exposure And Effects On Bats: Studies In Sichuan Province, China And Colorado, U.S.A., Laura Heiker

Dissertations

As the world’s only flying mammals, bats fill an important ecological role in most ecosystems, acting as agents of seed dispersal, pollination, fertilization, and insect control. The human-mediated release of environmental contaminants has been implicated in the decline of many bat populations over the past few decades. Given bats’ ecological significance, I studied how bat presence and activity related to contaminated food and water sources in two global regions: 1) in and around the growing urban city of Chengdu, the capital of Sichuan Province, China, and 2) along the eastern slope of the Rocky Mountains in Colorado, U.S.A., which has …

A Novel Role For Osteopontin In Facilitating West Nile Virus Neuroinvasion, Amber M. Paul

Dissertations

West Nile virus (WNV) is a positive-sensed, single-stranded RNA flavivirus that can cause human neuroinvasive diseases, including encephalitis, meningitis, and flaccid paralysis. The mechanisms by which WNV enters the central nervous system and the host-factors that are involved in WNV-neuroinvasiveness are not completely understood. Osteopontin (OPN), a multifunctional glycoprotein, has been implicated as a bio-marker for a number of neuroinflammatory diseases. In particular, secreted (s)OPN has been implicated to participate in recruitment of polymorphonuclear neutrophils (PMN) to sites of its expression, while PMNs have been suggested to act as WNV reservoirs. Therefore, sOPN recruitment of PMNs may contribute to neuroinvasive …

Elucidating The Role Of Interleukin-17a In West Nile Virus Infection, Dhiraj Acharya

Dissertations

West Nile virus (WNV) is a neurotropic flavivirus of significant public health importance for which no therapeutics and vaccine are currently available. Interleukin-17A (IL-17A) is an inflammatory cytokine that regulates diverse immune functions, while its role is unclear in host’s immune response to WNV. Furthermore, CD8⁺ T cells are crucial components of immunity and play a vital role in recovery from WNV infection. Here, we report a previously unrecognized function of IL-17A in regulating CD8⁺ T cell cytotoxicity. We show that WNV induces the expression of IL-17A in both mouse splenocytes and human peripheral blood mononuclear cells cultured …

Study Of Rickettsia Parkeri Colonization And Proliferation In The Tick Host Amblyomma Maculatum (Acari: Ixodidae), Khemraj Budachetri

Dissertations

Amblyomma maculatum (Gulf coast tick) ticks are prevalent across the Atlantic to Gulf Coast region of United States. These ticks are recognized vectors of Rickettsia parkeri, a spotted fever group of Rickettsia (SFGR) known to cause American boutonneuse fever associated with fever and eschar rashes localized to the site of bites. We hypothesized that Rickettsia parkeri colonization and proliferation in the tick vector involve pathogen-symbiont dynamics and tick-pathogen interactions, which influence rickettsial transmission to the victims after tick bites. The rickettsial infection is maintained across the tick life cycle for many generations due to transovarial and transstadial transmission of …

A Study Of The Effects Of Methylene Blue, Scopolamine, And Stress On Learning And Memory In The Zebrafish, Erika Marie Caramillo

Dissertations

With the ever-increasing aging population, neurodegenerative diseases such as Alzheimer’s disease are becoming more prevalent. Owing to such increases in age related cognitive decline, the need for research into new, effective treatments is more imperative now than ever. The zebrafish is an excellent animal model that can be used to study the potential pharmacological effects of novel cognition-centric treatments. However, more needs to be known about the species and its ability to learn, remember, and the effects certain drugs have on behavior. In this dissertation, I aimed to better understand zebrafish cognition through the testing of three conditions: a known …

Anxiety-Like Behaviors And C-Fos Expression In Adult Zebrafish: Effects Of Housing Conditions, Alcohol And Caffeine, Adam Douglas Collier

Dissertations

Alcohol abuse is the third largest risk factor for disease world, responsible for an estimated 3.3 million deaths each year. The concomitant ingestion of alcohol and caffeine is hypothesized to increase risk factors associated with alcohol use alone by reducing subjective effects of intoxication. The zebrafish (Danio rerio) has recently garnered attention from researchers as an effective pre-clinical in-vivo animal model in behavioral pharmacology research, largely due to small size, low-cost and ease of drug delivery. A number of studies have reported the effects of alcohol and caffeine on zebrafish behavior at a variety of doses. However, the …

Efficacy Of Cognitive Enrichment For Bottlenose Dolphins (Tursiops Truncatus): Evaluation Of Planning Abilities Through The Use Of A Novel Problem Solving Task, Lisa Kay Lauderdale

Dissertations

Environmental enrichment is a key component to improving the psychological and physiological well being of animals in human care. Enrichment can be achieved through a variety of modalities, including the addition of objects and scents, or by providing the animals with additional challenges. The effectiveness of specific enrichment should be evaluated on a case-by-case basis to determine if the desired result is achieved. Environmental enrichment devices (EED’s) can be utilized to present novel problems to animals in human care. When confronted with a novel problem, dolphins can plan their behavior to create a more efficient strategy then previously modeled.

The …

The Relationship Between Social Status Motivation And The Detection Of Trustworthy And Affiliative Cues In Faces, Christopher J. Lustgraaf

Dissertations

A prominent feature of human (and non-human primate) social group structure involves the establishment and maintenance of a social hierarchy; that is, social groups are arranged hierarchically, based on individuals’ level of status, and conspecifics who more effectively ascend this status hierarchy accrue more reproductive and resource benefits (Hawley, 1999). Thus, for any individual, other group members could be either a threat to one’s status, or an ally to assist status goals, and accurate identification of these various social targets would have adaptive utility in status maintenance or status hierarchy ascension. The current study tested the hypotheses that activation of …

Beacon Light And Other Stories, Joseph Arnold Holt

Dissertations

The following stories, composed between fall 2013 and spring 2016, concern matters of devotion, obsession, trauma and recovery. They progress from objective points-of-view to omniscience, along the way adopting larger narrative time frames and casts of characters.

The Disadvantaged Status In The American Medical College Application Service: Medical Students Reflect On Their Experiences, Adam M. Lowrance

Dissertations

The option to identify as disadvantaged in the American Medical College Application Service (AMCAS) primary application may lead to unclear expectations for applicants. Despite its inception more than a decade ago, there are no published materials containing either a comprehensive definition, or explanation of the role of the Disadvantaged Status in student selection. Research on the Disadvantaged Status is similarly lacking. The purpose of this interpretivist case study was to explore how current students made meaning of the option to identify as disadvantaged when they were applying to medical schools. Through this research I uncovered meanings applicants ascribed to the …