Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Mississippi

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2461 - 2490 of 26816

Full-Text Articles in Entire DC Network

The Role Of Acetylcholine In Attention And Lapses In Attention In Rats Using The Mode And Deviation From Mode Of Reaction Time Latency, Scott Lee Mitchell Jan 2021

The Role Of Acetylcholine In Attention And Lapses In Attention In Rats Using The Mode And Deviation From Mode Of Reaction Time Latency, Scott Lee Mitchell

Electronic Theses and Dissertations

Attention Deficit-Hyperactivity Disorder (ADHD) is currently the neurodevelopmental disorder most commonly diagnosed in children in the United States, and one of the defining characteristics of ADHD is inattention. Inattention is marked by increased lapses in attention, and when assessed clinically, it has been highly correlated with reaction-time variability (RTV). Evidence from the human/clinical literature has shown an inherently higher RTV to be the primary quantitative indicator of an ADHD diagnosis. Reaction-time distributions are characterized by an asymmetrical rightward skew, and because of the prevalence of this presentation, it has been theorized that the distribution peak and skew represent separate phenomena, …


Convective Heat Transfer Enhancement Of A Channel-Flow Using Synthetic Jet, Pravesh Pokharel Jan 2021

Convective Heat Transfer Enhancement Of A Channel-Flow Using Synthetic Jet, Pravesh Pokharel

Electronic Theses and Dissertations

A transient numerical simulation was carried out using ANSYS Fluent, to investigate the convection heat transfer enhancement of the air channel flow using the synthetic jet. Keeping the dimensional parameters of the domain fixed, averaged channel flow velocity was varied up to 3m/s. The diaphragm displacement effect on synthetic jet was studied, ranging the peak-to-peak displacement value from 0.4 to 1.2mm with increment of 0.4mm. Three locations were studied to determine the best operating location of the synthetic jet. Also, frequencies were varied up to 200Hz with every 50Hz increment, from initial condition of 50Hz. It was found that the …


Dachash: A Dynamic, Cache-Aware And Concurrent Hash Table On Gpus, Hao Zhou Jan 2021

Dachash: A Dynamic, Cache-Aware And Concurrent Hash Table On Gpus, Hao Zhou

Electronic Theses and Dissertations

GPU acceleration of hash tables in high-volume transaction applications such as computational geometry and bio-informatics are emerging. Recently, several hash table designs have been proposed on GPUs, but our analysis shows that they still do not adequately factor in several important aspects of a GPU’s execution environment, leaving large room forfurther optimization.


Forecasting Geotechnical Parameters From Electrical Resistivity And Seismic Wave Velocities Using Artificial Neural Network Models, Fatema Tuz Johora Jan 2021

Forecasting Geotechnical Parameters From Electrical Resistivity And Seismic Wave Velocities Using Artificial Neural Network Models, Fatema Tuz Johora

Electronic Theses and Dissertations

Geotechnical measurements of soil parameters used in the design of infrastructure provide information at a specific point of the ground. The use of limited point data may result in greater uncertainty and less reliability in design. Geophysical methods are non-invasive, less time-consuming, and provide continuous spatial information about the soil. However, geophysical information is not in terms of engineering parameters. Correlations between geotechnical parameters and geophysical parameters are needed to facilitate the use of geophysical information in geotechnical designs. The current research is focused on two geophysical methods; electrical resistivity (ER) and seismic wave velocity (S-wave and P-wave). Artificial neural …


Effects Of Acute Exercise Intensity On Source Episodic Memory: Considerations By Cardiorespiratory Fitness, Brandon Thomas Rigdon Jan 2021

Effects Of Acute Exercise Intensity On Source Episodic Memory: Considerations By Cardiorespiratory Fitness, Brandon Thomas Rigdon

Electronic Theses and Dissertations

Prior research suggests that behavioral (e.g., acute exercise) and psychological factors (e.g., metamemory; monitoring and control of one’s memory processes) may influence memory function. However, there is conflicting results on the optimal intensity of acute exercise to enhance memory and whether acute exercise can also enhance metamemory. Further, very limited research has evaluated whether acute exercise can influence source episodic memory. The primary objective of this study was to evaluate whether there is an intensity-specific effect of acute aerobic exercise on source episodic memory and metamemory accuracy. A secondary objective was to evaluate if cardiorespiratory fitness moderates this potential relationship. …


Absurdity Is A Distinct Aesthetic Category, Sarah Jean Szopinski Jan 2021

Absurdity Is A Distinct Aesthetic Category, Sarah Jean Szopinski

Electronic Theses and Dissertations

Absurdity is the sudden discomfort caused by direct awareness of your being consciousand your relation to reality. Camus’ absurdist philosophy refers to the conflict between the human desire for inherent meaning in reality and the incomprehensible and irrational nature of the universe. Facing absurdity requires confronting the absurd feeling through introspective awareness of this tension. Otherwise, you are overcome by it, succumbing to a lack of mindfulness and avoidance of the confrontation. Absurdity, especially in its aesthetic dimension, has not received the sustained attention it deserves. In this paper, I argue that due to the sustained relevance of the absurd …


A Novel Approach Toward High Accuracy Indoor Localization}{Masters Of Science, Yunshu Wang Jan 2021

A Novel Approach Toward High Accuracy Indoor Localization}{Masters Of Science, Yunshu Wang

Electronic Theses and Dissertations

This thesis presents a novel approach towards high accuracy indoor localization with smartphones. Better than all the existing indoor localization methods, our approach has the advantage of being infrastructural-free, robust, and it does not require any pre-installation in a new environment. To make this goal come true, we built a testbed that only uses the Inertial Measurement Units (IMU) of the smartphones to access the smartphones' raw acceleration and orientation data, then use these data to calculate the user's location by coordinate transformation and interactions. We conducted extensive experiments and evaluations for testbed validation as well as to carefully examine …


The Impact Of Market Fragmentation On Stock Exchange Events And Thinly Traded Securities, Donovan Woods Jan 2021

The Impact Of Market Fragmentation On Stock Exchange Events And Thinly Traded Securities, Donovan Woods

Electronic Theses and Dissertations

In Part 1, I analyze independent technological malfunctions that forced trading halts at various equity exchanges over the past decade. During each halt, all other exchanges remained open. The primary purpose of this study is to examine intraday trading activity before, during, and after a technological malfunction, which are events that are neither driven by an informational event nor an order imbalance. Of the events I record in this study (8 technological malfunctions), a majority document a reduction in liquidity and an increase in short term volatility during and immediately after a technological malfunction. Furthermore, these affects appear to be …


Computational Modeling Of Non-Active Functional States Of The Cannabinoid Receptor 1 And Its Ligands, Ayooluwa Olufunmi Aderibigbe Jan 2021

Computational Modeling Of Non-Active Functional States Of The Cannabinoid Receptor 1 And Its Ligands, Ayooluwa Olufunmi Aderibigbe

Electronic Theses and Dissertations

The cannabinoid receptor 1 (CB1) is a class A G-protein coupled receptor that is implicated in a variety of physiological processes, such as energy homeostasis, appetite regulation, cognition and motor control, and mood regulation. CB1 is widely distributed throughout the body, but is mainly expressed in the brain. Molecules that reduce CB1 signaling exhibit anti-obesity properties due to their effect in reducing appetite and body weight gain. However, the consequence of reducing CB1 signaling in the CNS includes adverse neuropsychiatric effects such as depression and suicidal ideation. Two methods of scientific interest for developing CB1 antagonists as anti-obesity drugs are …


An American Pilgrimage: The 1968 Poor People's Campaign Mule Train As Prophetic Social Performance, Cheston M. Bush Jan 2021

An American Pilgrimage: The 1968 Poor People's Campaign Mule Train As Prophetic Social Performance, Cheston M. Bush

Electronic Theses and Dissertations

In late spring of 1968, the Southern Christian Leadership Conference (SCLC) launched a nationwide demonstration known as the Poor People’s Campaign in an effort to overcome poverty. Nine caravans representing people from around the country converged in the Capitol to petition Congress for programs that would broaden opportunities for poor Americans. This work examines the Mississippi contingent of the campaign, the Mule Train caravan, that consisted of roughly 150 people who traveled in 15 covered wagons pulled by about 40 mules. The Mule Train left Marks, Mississippi on May 13 and arrived in Washington, D.C. in time for a June …


How Do Prey Capture And Simulated Fire Affect Growth And Nutrient Limitation In A Carnivorous Pitcher Plant, Sarracenia Alata?, Jalen Christopher Holloway Jan 2021

How Do Prey Capture And Simulated Fire Affect Growth And Nutrient Limitation In A Carnivorous Pitcher Plant, Sarracenia Alata?, Jalen Christopher Holloway

Electronic Theses and Dissertations

Carnivorous plants are defined as being able to benefit from the nutrients of prey in the environment, and have at least one trait that either retrieves, ingests, or lures a prey to its traps. The association of carnivorous plants with fire-prone habitats was initially described as a paradox, considering that carnivorous plants are often associated with nutrient-poor soils and fires can increase soil nutrient availability. This apparent paradox assumes, however, that the nutrients that increase in availability following fire are those also provided by prey, which might not be true. In habitats with nitrogen-poor soils, fire has been shown to …


"Between The Two Great Battlefields:" Scottish Medical Women's Encounters With The Eastern Front, Fiona Gale Holter Jan 2021

"Between The Two Great Battlefields:" Scottish Medical Women's Encounters With The Eastern Front, Fiona Gale Holter

Electronic Theses and Dissertations

This dissertation discusses the role of medical women on the battlefront during the First World War. Using the Scottish Women’s Hospitals as a case study, it argues that frontline medical women occupied a liminal space on the fronts. As both witnesses and participants, they confronted wounds, trauma, and violence wrought by total war. Since this was typically reserved for the combatant, contemporary notions of gender refused to acknowledge medical women’s authority within the war story. This dissertation employs medical women’s wartime experiences to argue that their war story redefines our understandings of combatancy, allowing us to see it as a …


Do Bears Prefer The Weak And The Downtrodden? The Effects Of The 52-Week Low And Financial Strength On Short-Seller Behavior, Christopher Alan Miller Jan 2021

Do Bears Prefer The Weak And The Downtrodden? The Effects Of The 52-Week Low And Financial Strength On Short-Seller Behavior, Christopher Alan Miller

Electronic Theses and Dissertations

This dissertation investigates the effects of a company’s financial strength on short-seller behavior around a non-information-producing event. The distance of a stock price to its 52-week high or low does not provide fundamental information, but the price extremes serve as salient price points upon which investors anchor their expectations of future stock performance. Using a large sample of daily short sales data, I investigated the effects of both the proximity to the 52-week low and the financial strength of the underlying company on short-seller behavior. I found that short-selling volume increases as the price nears its 52-week low and that …


Nmr-Based Characterization Of A Glucan Isolated From Ganoderma Lucidum, Alysia Gonzales Jan 2021

Nmr-Based Characterization Of A Glucan Isolated From Ganoderma Lucidum, Alysia Gonzales

Electronic Theses and Dissertations

Ganoderma lucidum is a polypore fungus commonly known as Lingzhi, Youngji or Reishi mushroom in East Asia. It is frequently marketed as an herbal supplement and often utilized as traditional Chinese medicine. Our research comprises the structural investigation of the principal polysaccharide from this fungus. After proper purification, the fungal glucan was subjected to multiple experiments of NMR spectroscopy, including 1D 1H and 13C, 2D; 1H-1H COSY, 1H-1H TOCSY, 1H-1H NOESY, 1H-13C HSQC, 1H-1H Phase Sensitive-TOCSY, and 1H-13C TOCSY-HSQC NMR spectra. Data has confirmed that this fungal polysaccharide contains residues of glucose (91.31%) as major, galactose (4.99%), and mannose (3.69%) …


Masculinity And Cohesion In Miniature Wargaming, Christopher Gage Jan 2021

Masculinity And Cohesion In Miniature Wargaming, Christopher Gage

Electronic Theses and Dissertations

This research looked at the interactions on online platforms of those people who are part of the miniature wargaming community. The goal of this study was to answer 1) Which masculinities are present and practiced within the miniature wargaming community, 2) What is the reason for the cohesion of the miniature wargaming community. I found support for different masculinities, such as geek masculinity, hegemonic masculinity, and domestic masculinity. These different masculinities have different aspects and some of these aspects were displayed in the miniature wargaming community, with no masculinity being presented in all aspects. I also found support for the …


Dragon On A Dog Chain, Stephen M. Hundley Jan 2021

Dragon On A Dog Chain, Stephen M. Hundley

Electronic Theses and Dissertations

Fish lives on a barrier island of Georgia made locally famous by the atomic bomb that was dropped there by accident. He is in the care of two men, Reef and Nutzo, and the matriarch of the group, Whistle, who leads glass-bottom boat tours of the bomb and has also raised a tiger, Sugar.


An Applied Research On Promoting Proficiency In Fourth-Grade Reading, Deirdre Huntley Jan 2021

An Applied Research On Promoting Proficiency In Fourth-Grade Reading, Deirdre Huntley

Electronic Theses and Dissertations

This applied research study was conducted to promote proficiency in fourth-grade reading. There was a need for improvement in fourth-grade reading after receiving data from the school and state assessments. The study examined the implementation of specific reading and vocabulary strategies, student interventions, strengthening of teacher-student relationships, and encouraging student motivation to help students become proficient in understanding what the students were reading. Student diagnostic results and teacher interviews were utilized in this study. The findings revealed students were demonstrating advancement in reading comprehension. Due to the COVID-19 pandemic, the school building was closed in March of 2020 which impacted …


Towards A New Method Of Determining Protein Structure, Niloofar Abolhasani Khaje Jan 2021

Towards A New Method Of Determining Protein Structure, Niloofar Abolhasani Khaje

Electronic Theses and Dissertations

Hydroxyl radical protein footprinting (HRPF) by fast photochemical oxidation of proteins (FPOP) is a mass spectrometry-based technique that measures the apparent protein oxidation rate by freely diffusing hydroxyl radicals at different regions in a protein, and correlates changes in this apparent rate with changes in the solvent accessibility of the protein target based on quantifying the amount of oxidation of different regions of a protein. While there have been many advancements in HRPF-FPOP, oxidation measurement still suffers from high variability between measurements. High variability reduces the power statistical power this technique even in the presence of radical dosimetry measurements and …


Opinions, Attitudes, And Self-Efficacy Of Secondary School Counselors In Ramp And Non-Ramp Designated Schools And Their Work With Students With Disabilities, Christine Denise Lewis Pugh Jan 2021

Opinions, Attitudes, And Self-Efficacy Of Secondary School Counselors In Ramp And Non-Ramp Designated Schools And Their Work With Students With Disabilities, Christine Denise Lewis Pugh

Electronic Theses and Dissertations

The American School Counseling Association (ASCA) implemented standards that aid the professional school counselor via a comprehensive program to serve all students (ASCA, 2019). This study examines secondary school counselors working in RAMP and non-RAMP designated schools. The designation of recognized ASCA model programs (RAMP), which awards schools when they successfully implement comprehensive programs, leads one to believe that RAMP programs exhibit effectiveness, while understanding that lacking RAMP certification does not mean a comprehensive school counseling program does not exist. The current study surveyed secondary school counselors’ attitude, self-efficacy, and opinions toward work with students with disabilities. An independent samples …


Prototypically American: The Influence Of Accent And Race On Hiring Evaluations, Tuong-Vy Cac Nguyen Jan 2021

Prototypically American: The Influence Of Accent And Race On Hiring Evaluations, Tuong-Vy Cac Nguyen

Electronic Theses and Dissertations

In a globalized world, individuals are more likely to travel or migrate between countries; thus, we may encounter more individuals who speak with an accent that is unfamiliar. Accents can serve as a social cue that conveys information about the speakers’ background and national origin. It is a particularly important perceptual cue in the workplace because accented individuals are perceived to be lower in status and competence. The current study attempted to replicate prior findings on accents; disentangle race and accent; and extend the literature on accent by examining the target’s perceived prototypicality of Americanness. Across three studies (N = …


Implementation Of The Michael Heggerty Model To Increase Student Achievement Of At-Risk Readers In Kindergarten, Michelle White Nowell Jan 2021

Implementation Of The Michael Heggerty Model To Increase Student Achievement Of At-Risk Readers In Kindergarten, Michelle White Nowell

Electronic Theses and Dissertations

This applied research study seeks to help at-risk readers improve phonemic awareness in kindergarten at Mayberry Elementary by implementing the Michael Heggerty Phonemic Awareness Model so the students can become successful readers. Using three elements in this study, professional development, teacher PLCs, and data talk meetings with peer teachers in kindergarten throughout the year, the researcher sought to build teacher capacity in the implementation of the Michael Heggerty Phonemic Awareness Model to improve student achievement. Surveys, observations, focus groups, and interviews were used in the study. Additionally, the goal of this study aimed to improve the educator's capacity to address …


Explorations Of Timbre In Selected Songs From Schubert’S Winterreise, Samuel Clayton Garner Jan 2021

Explorations Of Timbre In Selected Songs From Schubert’S Winterreise, Samuel Clayton Garner

Electronic Theses and Dissertations

This thesis analyzes five songs from Franz Schubert’s song cycle Winterreise (1828) according to timbre using spectrographic images created with the Sonic Visualizer computer program. The report begins with an introduction to timbre, an explanation of spectrographic technology, and defining to terminology to be used in the analyses. The songs and topics to be covered are “Gute Nacht” and how individual performances can dictate timbre; “Die Wetterfahne” and the motive of wind related to timbre; “Der Lindenbaum” and timbral relationships among strophes; “Frühlingstraum” and how emotions, dream sequences, and weather are conveyed by timbre; and “Der stürmische Morgen” and the …


Analysis Of Bundle Protocol With Turbo Code, Babita Pradhan Jan 2021

Analysis Of Bundle Protocol With Turbo Code, Babita Pradhan

Electronic Theses and Dissertations

Bundle protocol is one of the main protocols for data transfer in delay/disruption networking characterized by the long delay, frequent disruption, intermittent connectivity, andhigh error rates. Using a store and forward technique, bundle protocol stores the application data by dividing it into smaller bundles locally at each node and then forwards it to the next node when access is available. Usually, it operates as an overlay network by staying on top of any other networking architecture. As one of the main protocols for delay/disruption networking, many studies have analyzed its performance. This thesis analyzes the bundle protocol’s performance in terms …


Reclaiming Apologetics As Serious Scholarship: A Methodology For An Open–Ended Exploration Of Christian Inclusivism, Lonnie Marvin Vining Jan 2021

Reclaiming Apologetics As Serious Scholarship: A Methodology For An Open–Ended Exploration Of Christian Inclusivism, Lonnie Marvin Vining

Electronic Theses and Dissertations

This thesis is a methodology for a writing project I have undertaken on Christian inclusivism. My approach to Christian inclusivism is drawn from Paul Tillich, but it is updated and improved by postmodernism and Derrida’s “religion without religion.” To wit: Whatever relief from suffering there is to be found in comparative religion, Jesus must have in principle taught it or something comparable, else by definition he was not the Christ. This type inquiry is unavoidably a form of Christian apologetics, but one that is designed to restore and renew Christian theology in light of the truths of comparative religion rather …


The Value Relevance Of Retail Strategy, Kexin Xiang Jan 2021

The Value Relevance Of Retail Strategy, Kexin Xiang

Electronic Theses and Dissertations

All three essays of this dissertation are under the umbrella of retail management and study the phenomenon of retail management from the following perspectives: retailers’ multichannel strategy, retailers’ store operation management, and retailers’ securities lawsuits likelihood. Specifically, the first essay studies the effect of a channel integration strategy called buy-online-and-pick-up-in-store on retailers’ stock value. The second essay studies the relationship between a retailer’s top management team (TMT) confidence and the store overexpansion. The third essay studies how TMT confidence is associated with securities class action (SCA) litigation. Essays 1 and 2 focus on retailers’ channel decision whereas Essays 2 and …


Advancements Toward Sustainable Solar Fuel Production Utilizing Reductive Homogeneous Electro- And Photocatalysis, Hunter Pratt Shirley Jan 2021

Advancements Toward Sustainable Solar Fuel Production Utilizing Reductive Homogeneous Electro- And Photocatalysis, Hunter Pratt Shirley

Electronic Theses and Dissertations

Molecular CO2 and H+ reductive catalysts, whether they be electro- or photocatalytic, have been shown to be possible routes of harnessing solar energy in a clean, renewable manner. There are few electrocatalysts operating at reasonable overpotentials to prove useful in artificial photosynthetic systems, and there are a number of environmental factors within these systems that have yet to be evaluated. Photo-driven catalysis is rare, difficult to control, and rarely provides high-value CO2 reduction products. I report herein an exceptionally low overpotential H+ reduction catalyst, a method of modulating electrocatalysts in-situ to improve performance, a first-of-its-kind mononuclear proton reduction photocatalyst, a …


Acceptability, Anticipated Adherence, And Willingness To Begin Interoceptive Exposure: Examination Of The Influence Of A Values Rationale, Gina Quebedeaux Boullion Jan 2021

Acceptability, Anticipated Adherence, And Willingness To Begin Interoceptive Exposure: Examination Of The Influence Of A Values Rationale, Gina Quebedeaux Boullion

Electronic Theses and Dissertations

Interoceptive exposure (IE) is a treatment entailing induction of feared physiological sensations that has emerged as the most efficacious component of cognitive behavioral treatments for panic disorder. However, small-to-moderate effect sizes, wide variability in response rates, and dropout rates indicate that panic disorder treatments may benefit from modifications to improve upon retention, response rates, and symptom reduction. Patient motivation and lack of engagement have been identified as factors to intervene upon. One specific direction that has gained increasing empirical interest is the inclusion of values identification; however, research has not yet examined the influence of values on motivation to engage …


Visual Tracking Speed And Soccer Performance Metrics, Julia Paige Phillips Jan 2021

Visual Tracking Speed And Soccer Performance Metrics, Julia Paige Phillips

Electronic Theses and Dissertations

Visual training has previously been shown to correlate to sport specific level of training and sport specific performance measures in controlled conditions. However, it remains unclear if these relationships exist between visual tracking thresholds and in competition decision making metrics over the duration of a soccer season. Therefore, the purpose of this study was to investigate the relationship between visual tracking speed (VTS) baseline scores and soccer-specific performance measures. In total, 19 NCAA Division I soccer players were tested before the 2021 spring soccer season, after exclusionary criteria only 13 were utilized for analysis. VTS was measured from 1-core session …


Electromagnetic Survey Design Using Artifical Neural Networks, Shariful Islam Sharif Jan 2021

Electromagnetic Survey Design Using Artifical Neural Networks, Shariful Islam Sharif

Electronic Theses and Dissertations

Acquiring geophysical information requires selection of the geophysical method based upon the defining physical property and a survey design with adequate resolution but cost effective based upon the size of the area to be surveyed. The objective of this study is to use artificial neural nets (ANNs) to design an optimal survey. The developed approach is tested for the case of soil pipe surveying using electromagnetics. Soil pipes are tortuous voids located within 1.5 m depth of the ground surface. They trend perpendicular to the slope and have cross-sectional dimensions on the order of millimeters to tens of centimeters. The …


Midwifery And Medicine In Britain: A Comparative View Of Midwifery And Childbearing In Scotland And England, 1650-1780, Summer Smith Jan 2021

Midwifery And Medicine In Britain: A Comparative View Of Midwifery And Childbearing In Scotland And England, 1650-1780, Summer Smith

Electronic Theses and Dissertations

In this dissertation I contend the female midwives and childbearing women did not passively accept the alteration of the experience of birth and the ideology surrounding it in eighteenth-century Britain. While the imposition of the man-midwife and the reframing of birth as a disease to be cured in some ways forced childbearing to shift to a medicalized event, many practices persisted from the seventeenth through the nineteenth centuries, illustrating a vein of consistency in a seemingly tumultuous period. Furthermore, the changes that did take root were not solely the purview of the male medical community, but were influenced by women …