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Zinc Injection As A Novel Castration Method And Carry-Over Effects Of Growth-Promoting Implants In Beef Cattle, Jase Joseph Ball

Graduate Theses and Dissertations

In experiment 1, crossbred bull calves (n = 31; body weight (BW) = 114.3 ± 26.3 kg; age = 119 ± 18.4 d) were allocated to treatments by BW and birthdate. Twenty-seven bull calves were allocated to 3 injectable castration treatments (n = 9 calves/injectable castration treatment) to reflect 3 dosage levels of zinc. Intact bulls had greater (P < 0.001) serum testosterone concentrations compared to bulls injected with zinc. In experiment 2, crossbred beef bulls (n = 180) were blocked by initial BW (337 ± 10.9 kg; 6 blocks) and assigned randomly to 1 of 3 treatments on d 0: 1) INJ; received 1 mL (100 mg Zn) of a Zn solution in each testis, 2) BAN; banded, 3) BUL; intact. Final BW was greater (P < 0.01) for INJ (672 kg) and BUL (686 kg) compared to BAN (611 kg). Serum haptoglobin concentration was greater (P < 0.01) in INJ compared to BUL and BAN on d 1, 3, 5, and 7. Zinc injection resulted in sterilization but not castration in feedlot bulls although it was efficacious in castration of young bulls at branding. In experiment 3, crossbred beef steers (n = 106; BW = 96 ± 3.9 kg; age = 74 ± 2.0 d) were blocked by parity of dam (≤ 2 or > 2 parities), stratified by BW, calf age, calf sire, cow BW and body condition score to 1 of 4 treatments: 1) RALG, Ralgro, Ralgro, Revalor XS, at branding (D 0), weaning (D 156), and feedlot processing (D 325), 2) COMP, Component …

The Challenge Of Anonymous And Ephemeral Social Media: Reflective Research Methodologies & Student-User Composing Practices, Sara Elyse West

Graduate Theses and Dissertations

This project seeks to provide a framework for navigating anonymous and ephemeral research spaces to theorize student-user composing practices on these social media platforms. This project reflects on and builds from the difficulties that arose during a previous project for which I collected data from a space that was both ephemeral and anonymous. That experience led me to the questions of use and research methods that I consider in this project, wherein I rely on critical reflective research practices to provide an effective methodology for examining the type of data in question. In this work, I consider how past and …

Translation Of View From The Ossuary By Antoine Volodine, John Thomas Mahany

Graduate Theses and Dissertations

This is a literary translation from the French of Antoine Volodine’s Vue sur l’ossuaire. Additional creative embellishments have been included in the form of translator’s notes and epigraphs in order to enhance the fictive reality of the work.

Antiproliferative Activity Of Carotenoids, Phenolic Compounds, And Volatile Terpenoids In Carrots (Daucus Carota L.), Brittany Frederick

Graduate Theses and Dissertations

Epidemiological studies have shown an association between high carrot consumption and low prevalence of cancer. This observation has been thought to be attributed to carrot carotenoids. Despite this, various intervention trials have displayed no changes in incidence or increased incidence of cancer with carotenoid supplementation. It is possible that carrot phenolics are responsible for this association, though this has not been widely accepted. Volatile terpenoids from carrots have not been studied in this regard. Therefore, the primary objective of this study was to compare the antiproliferative effects of carotenoids, phenolics, and volatile terpenoids extracted from carrots on Caco-2 colon cancer …

The Perceptions Of Efl Teachers About Their Pre-Service Preparation In Iraqi-Kurdistan, Nawzar Haji

Graduate Theses and Dissertations

The booming economy in Iraqi-Kurdistan during the last decade attracted hundreds of international companies to the region. The young Kurdish workforce seeks secure jobs that are well paid in such companies. Therefore, they need to be proficient in English. Besides, in general the Kurdish young generation has a positive attitude towards English and consider it the language of science, business, economy, tourism and prestige. Hassan (2014) states that Kurdish-speaking people generally have a positive opinion about learning the English language and believe that having a degree in English means better chances to get a job.

Therefore, the Kurdistan Regional Government’s …

Securing Soft Ips Against Hardware Trojan Insertion, Thao Phuong Le

Graduate Theses and Dissertations

Due to the increasing complexity of hardware designs, third-party hardware Intellectual Property (IP) blocks are often incorporated in order to alleviate the burden on hardware designers. However, the prevalence use of third-party IPs has raised security concerns such as Trojans inserted by attackers. Hardware Trojans in these soft IPs are extremely difficult to detect through functional testing and no single detection methodology has been able to completely address this issue. Based on a Register-Transfer Level (RTL) and gate-level soft IP analysis method named Structural Checking, this dissertation presents a hardware Trojan detection methodology and tool by detailing the implementation of …

A Proposed Approach To Hybrid Software-Hardware Application Design For Enhanced Application Performance, Alex Shipman

Graduate Theses and Dissertations

One important aspect of many commercial computer systems is their performance; therefore, system designers seek to improve the performance next-generation systems with respect to previous generations. This could mean improved computational performance, reduced power consumption leading to better battery life in mobile devices, smaller form factors, or improvements in many areas. In terms of increased system speed and computation performance, processor manufacturers have been able to increase the clock frequency of processors up to a point, but now it is more common to seek performance gains through increased parallelism (such as a processor having more processor cores on a single …

Improving The Efficacy Of Context-Aware Applications, Jon C. Hammer

Graduate Theses and Dissertations

In this dissertation, we explore methods for enhancing the context-awareness capabilities of modern computers, including mobile devices, tablets, wearables, and traditional computers. Advancements include proposed methods for fusing information from multiple logical sensors, localizing nearby objects using depth sensors, and building models to better understand the content of 2D images.

First, we propose a system called Unagi, designed to incorporate multiple logical sensors into a single framework that allows context-aware application developers to easily test new ideas and create novel experiences. Unagi is responsible for collecting data, extracting features, and building personalized models for each individual user. We demonstrate the …

The Effect Of Napping On Sleep Quality And Quantity In Healthy And Concussed Collegiate Athletes, Katie Stephenson-Brown

Graduate Theses and Dissertations

Clinicians are increasingly prescribing a regulated sleep schedule to athletes post injury; however, baseline sleep habits of collegiate athletes are unknown. Moreover, the connection between napping and sleep quality and quantity has not been studied in collegiate athletes. Therefore, the purpose of this study is to investigate napping behaviors and their effects on sleep quantity and quality in concussed and non-concussed collegiate athletes. In a sample of 233 non-concussed collegiate athletes, 74% (172/233) of participants reported napping. Napping was not significantly associated with sleep quantity (χ 2 (2) = .23, p = .64) or quality (χ 2 (1) = .42, …

A Flourynge Aege: Tracing The Sacred And Secular In The Book Of St. Albans, Allison Treese

Graduate Theses and Dissertations

With the introduction of the printing press to England around the mid-fifteenth century, English authors were not only writing under the lingering influence of Chaucer and the conventions of established medieval genres, but now had to confront the implications for reading and readership that printing brought with it along with the already turbulent political climate of the fifteenth century. Though this cultural shift was arguably a gradual one, with the earliest printers taking special care to remain faithful to the manuscripts they were copying, and conventional scribes likewise being commissioned to make copies of printed works, there were nevertheless radical …

Factors Affecting The Longevity Of Individual Terrorists, Madeline Brice

Graduate Theses and Dissertations

The purpose of this study is to examine factors that affect the longevity of individual terrorists. Previous studies on terrorist group longevity have focused on the decisions terrorist groups have made rather than focusing on factors that help individuals evade capture. Literature also suggests that terrorists that manage to stay active may be able to use this as a valuable recruiting tool. This project examines six different relationships with longevity, including Attorney General (AG) Guidelines, demographics, ideology, level of participation, number of activities, and sophistication of attack. To examine these relationships, data will be used from the American Terrorism Study …

An Investigation Into The Relationship Between Spirituality And Coping Responses Among Women With A Visual Impairment, Sandra Marie Bullins

Graduate Theses and Dissertations

The purpose of this study was to examine coping responses, specifically by women, and the relationship between those coping responses and a woman’s self-reported spirituality. The sample was comprised of women (n = 175) from the United States and 10 foreign countries. The results of a correlational analysis showed a strong positive relationship (r= 0.46, p<0.0001) between scores on the Spirituality Assessment Scale (SAS) and the Brief Cope (BC). There were also statistically significant correlations among subscales of the SAS and BC subscales. A multivariate analysis of variance was performed to evaluate the impact that select demographic variables might have on spirituality and coping responses. The results of the MANOVA showed no effect and were not statistically significant at alpha 0.1.

Development Of Microdialysis Probes In Series Approach Toward Eliminating Microdialysis Sampling Calibration: Miniaturization Into A Pdms Microfluidic Device, Randy Espinal Cabrera

Graduate Theses and Dissertations

A new microdialysis sampling method and microfluidic device were developed in vitro. The method consisted of using up to four microdialysis sampling probes connected in series to evaluate the relative recovery (RR) of different model solutes methyl orange, fluorescein isothiocyanate (FITC)-dextran average mol. wt. 4,000 (FITC-4), FITC-10, FITC-20, and FITC-40. Different flow rates (0.8, 1.0, and 1.5 µL/min) were used to compare experimentally observed relative recoveries with theoretical estimations. With increasing the number of probes in series, the relative recovery increases and ~100% (99.7% ± 0.9%) relative recovery for methyl orange was obtained. For larger molecules such as fluorescein isothiocyanate …

In Vivo Structure-Function Analysis Of Drosophila Robo1, An Axon Guidance Receptor Critical For Midline Repulsive Signaling In The Embryonic Central Nervous System, Haley Brown

Graduate Theses and Dissertations

The repellant ligand Slit and its Roundabout (Robo) family receptors regulate many aspects of axon guidance in bilaterians, including midline crossing of axons during development of the embryonic CNS. Slit proteins are produced by midline cells and signal through Robo receptors expressed on the surface of axonal growth cones to repel axons from the midline. Disruption of Slit-Robo signaling causes ectopic midline crossing phenotypes in the CNS of a broad range of animals, including insects and vertebrates.

Drosophila Robo1 has a conserved ectodomain structure of five immunoglobulin-like (Ig) domains plus three fibronectin (FN) repeats. By utilizing a genomic rescue construct …

Seasonal Phenology, Distribution And Treatments For Polyphagotarsonemus Latus (Banks) On Primocane-Fruiting Blackberries (Rubus L. Subgenus Rubus) In Arkansas, Jessica Anne Lefors

Graduate Theses and Dissertations

Worldwide, blackberries (Rubus L. subgenus Rubus) are an economically important crop. In 2007, Polyphagotarsonemus latus (Banks) (broad mites), were first reported damaging primocane-fruiting blackberries in Fayetteville, Arkansas. Since this time, broad mite damage to blackberries and yield loss has been reported in many states and countries. Despite the increasing reports of this blackberry pest, little is known about their population dynamics, and few treatments are available. Growers with broad mite populations need a pest management program to minimize yield loss. Therefore, there was a need to develop sampling techniques, describe broad mite seasonal phenology in blackberry fields, and determine efficacy …

Glucose Level Estimation Based On Invasive Electrochemical, And Non-Invasive Optical Sensing Methods, Sanghamitra Mandal

Graduate Theses and Dissertations

The purpose of this research is to design and fabricate sensors for glucose detection using inexpensive approaches. My first research approach is the fabrication of an amperometric electrochemical glucose sensor, by exploiting the optical properties of semiconductors and structural properties of nanostructures, to enhance the sensor sensitivity and response time. Enzymatic electrochemical sensors are fabricated using two different mechanisms: (1) the low-temperature hydrothermal synthesis of zinc oxide nanorods, and (2) the rapid metal-assisted chemical etching of silicon (Si) to synthesize Si nanowires. The concept of gold nano-electrode ensembles is then employed to the sensors in order to boost the current …

Developing A Hil-Based Software Platform For Testing Electric And Hybrid Vehicle Powertrains, Daniel Schwartz

Graduate Theses and Dissertations

The objective of this thesis is to present a dynamometer test stand with hardware in the loop (HIL) testing capabilities for the evaluation of electric and hybrid vehicle powertrains under realistic driving conditions. The traction inverter and dc/dc converter are two crucial subsystems of the powertrain and new prototypes require significant validation before implementing into production vehicles. As fundamental technologies such as power modules, thermal management systems, and passive components improve; the performance improvements to the overall system must be demonstrated. The plug and play nature of the testbed makes it ideal for making direct comparisons of design iterations under …

Evaluating An Academic Bridge Program Using A Mixed Methods Approach, Leslie May Yingling

Graduate Theses and Dissertations

As the demand for college degrees has increased, college enrollment has grown significantly, and economic forces have applied greater pressure on the higher education environment to produce more degrees and better post-graduation outcomes. Many public colleges and universities have felt these pressures distinctly because of their state funding environments and the specific expectations that exist within them. While college aspirations and attendance have broadly improved, achievement gaps persist along cultural, generational, and socioeconomic lines. In an effort to navigate and negotiate institutional goals, public expectations, economic needs, and educational ideals, institutions engage in diverse approaches to recruitment and retention. Academic …

Low Latency Intrusion Detection In Smart Grids, Israel Zairi Akingeneye

Graduate Theses and Dissertations

The transformation of traditional power grids into smart grids has seen more new technologies such as communication networks and smart meters (sensors) being integrated into the physical infrastructure of the power grids. However, these technologies pose new vulnerabilities to the cybersecurity of power grids as malicious attacks can be launched by adversaries to attack the smart meters and modify the measurement data collected by these meters. If not timely detected and removed, these attacks may lead to inaccurate system state estimation, which is critical to the system operators for control decisions such as economic dispatch and other related functions.

This …

An Analysis Of Adult Educators’ Experiences With Professional Development Activities, Robbie Scott Cornelius

Graduate Theses and Dissertations

This study was designed to explore Adult Basic Education (ABE), Adult Secondary Education (ASE), and English as a Second Language (ESL) teachers’ experiences with professional development. The study sought to determine whether adult learning principles were evident in the facilitation of professional development activities. The study instrument was administered online to members of the Coalition on Adult Basic Education (COABE), with a total of n=348 respondents to the survey. The survey consisted of demographic questions, questions related to professional development experiences, and an open response question. The majority of respondents were teachers/instructors (n=232, 66.7%), held a master’s degree (n=187, 54.4%), …

Transformational Leadership In Club Sports: An Instrument For Evaluation And Assessment, Nathan Shelby Hutchens

Graduate Theses and Dissertations

Campus Recreation and its programs can be used as a way to combat the national trends of decreasing enrollment and retention (Weaver, Forte, & McFadden, 2017; Kampf & Teske, 2013). In fact, 62% of students indicate that Campus Recreation programs are a factor when choosing an institution and 67% indicate that recreation programs were a factor when deciding to stay at a particular institution (Forrester, 2014). As a program within Campus Recreation, Club Sports specifically is perceived to have the greatest health and wellbeing benefits out of all Campus Recreation programming (Lower, Turner, & Petersen, 2013). Due to the voluntary …

Immunostimulatory Effects Of Antigen-Conjugated Inp/Zns Quantum Dot Nanoparticles In An Avian Model, Christopher Lyle

Graduate Theses and Dissertations

Due to their unique physicochemical and enhanced immunostimulatory properties, quantum dot (QD) nanoparticles have shown increasing promise in biomedical research applications including bioimaging, drug delivery, and as vaccine adjuvants. Toxicity, however, remains a concern for the use of QD in these applications and thus, there is an increased demand for effective in vitro and in vivo systems to measure the bioactivity of QD. In this study in vitro and in vivo chicken models were used to investigate the effects of QD on innate and adaptive immunity. Chicken macrophage cultures were treated in vitro with QD to measure macrophage activation and …

Teacher And Administrator Perspectives From Experiences In The Teacher Leadership Initiative, Leslie Lynne Sharp

Graduate Theses and Dissertations

Teacher leadership, has been defined by many researchers as the answer to school improvement through the use of teacher leaders leading the effort in schools and districts. This qualitative dissertation takes a deep look into the experiences of teachers and administrators that participated in a nation-wide teacher leadership pilot, the Teacher Leadership Initiative (TLI), and the effects that this year-long event had on leadership, school improvement and teacher and administrator professional practices. Unifying outcomes from the participants as a result of their involvement in this initiative included changes in thinking about leadership that directly improved professional efficacy, collaborative and leadership …

The Effect Of Cellular Dehydration On Glucose Regulation In Lean And Obese Females, Chunbo Yang

Graduate Theses and Dissertations

A chronically elevated vasopressin level has been associated with an impaired glucose regulation system in humans. A recent study in patients with diabetes suggested that low water intake is associated with impaired glucose regulation. The aim of this study was to examine the effect of hypertonic saline infusion on glucose regulation in healthy females. Thirty healthy, non-diabetic females performed a 2-h infusion followed by a 4-h oral glucose tolerance test (OGTT). Every subject participated in two trials separated by one month, in a counterbalanced order. Two trials were identical in the procedure, differing in the concentration of saline infusion, with …

A Focus On The Us Narrative: Does The New York Times Portrayal Of Women Living With Hiv And Aids In Southern Africa Perpetuate Hiv/Aids Stigma?, Boitshepo Monte Balozwi

Graduate Theses and Dissertations

The aim of the study was to determine the dominant and recurring frames influencing the narrative and media portrayal of women living with HIV and AIDS in Southern Africa, a region characterized by a low socio-economic status and the highest HIV and AIDS infection rates globally. The study analyzed 238 stories published in The New York Times from 1985 to 2017. Findings of the study show that news reports frequently associate sex workers and pregnant women to coverage on HIV and AIDS therefore stigmatizing them as vectors of the disease. The newspaper stories provided adequate socioeconomic context resulting in African …

An Empirical Study On Teachers' And Students' Perception Of Project Based Learning, Della Rae Adams

Graduate Theses and Dissertations

This research focused on the perceptions of Project Based Learning in an English as a Foreign Language context in one private Guatemalan school. The research examined the perceptions of teachers and students on Project Based Learning by implementing a four-week project in one classroom. This research also examined the difference between the girls’ and boys’ perceptions of Project Based Learning. The participants included one teacher and 18 students aged between 15 and 16. Mixed method was used to derive quantitative and qualitative data from surveys, an interview, and observational data. The results concluded that the teacher had a positive experience …

Evaluation Of The Effects Of Formaldehyde On Growth Parameters Of Broiler Chicks, Paula Johnson

Graduate Theses and Dissertations

Formaldehyde has been used as a disinfectant in poultry hatching cabinets to aid in controlling key pathogenic organisms, such as Salmonella and Escherichia coli (E.coli). There is some evidence that prolonged exposure of chicks to formaldehyde can reduce tracheal ciliary function and thus reasons to believe that exposure to formaldehyde, in the absence of pathogen challenge, may reduce chick vitality. It has been found that elevated temperatures during incubation may adversely affect body weights of broiler chicks, as well as post-hatch environmental heat stress on performance in poultry. Post-hatch environmental heat stress has been shown to impact performance in poultry. …

Fabrication And Characterization Of Graphene Based 2d Materials For Supercapacitors, Anishkumar Manoharan

Graduate Theses and Dissertations

Supercapacitors have attracted a lot attention due to their efficient energy storage. In comparison to batteries, supercapacitors have high capacitance, energy, and power densities per unit mass than conventional capacitors. Carbon based materials are most promising in supercapacitor application due to their outstanding physical and electrochemical behavior. In this work, a facile method to synthesize a nanocomposite electrode consisting of annealed carbon from carbon ink and MoS2 was demonstrated. Effects of various aqueous and solid electrolytes were studied. It was found that the nanocomposite electrode with 10% MoS2 and 1M Na2SO4 as the aqueous electrolyte tested using the three electrode …

Students’ Perceptions About Gamified Methods In English As A Second Language Acquisition, Se He Hwang

Graduate Theses and Dissertations

This qualitative research study will examine whether game-based learning is effective for helping to learn English as a second language (ESL) in the United States. This study will ask participants, particularly adult second language learners, about their perceptions of high levels of stress and anxiety when learning English. The study will also investigate whether game-play motivated students learn English in class. Data collected in this study will be based on interviews, questionnaires, and observations of the classrooms and game play, and the results demonstrated that participants’ interest in the game created active involvement in game-play in class.

Applications Of Reservoir Limnology Theory And Steady-State Modeling To Eutrophication Management In Beaver Lake, Arkansas, Matthew Rich

Graduate Theses and Dissertations

Reservoir limnology theory predicts that phytoplankton biomass (PB) is greatest in riverine-transition zones and least in lacustrine zones leading to an inverse pattern in water clarity. These theoretical patterns were utilized to create a statistical model of chlorophyll-a (Chl-a), an indicator of PB, and Secchi transparency (ST), an indicator of Chl-a, in Beaver Lake, Arkansas, a 12,800-ha reservoir, in order to hindcast historical conditions. Sampling for Chl-a, ST, and photic depth occurred semimonthly at 12 locations along a 78-km transect from the river inflow to the dam during the 2015 growing season. The ratio of Chl-a and ST measured at …