Digital Commons Network^™

A Novel Palladium Bodipy Photocatalyst For Sonogashira Carbon-Carbon Cross-Coupling, Prahadeesh Nagaretnam

Masters Theses

No abstract provided.

The Effects Of Imf's Lending And Conditionalities On Economic Growth: Case Of Sadc Countries, Lutete Celina Carlos

Masters Theses

I examine the impact of IMF credit use and its conditions on economic growth performance in 12 South African countries over a period of 1999-2019. The work adopts an empirical and quantitative approach to analyzing the relationship between the GDP per Capita, the use of IMF Credit, Government Final Consumption Expenditure, Net Domestic Credit and Current Account balance. These variables are the most recommended in the IMF conditionalities during the lending arrangements with SADC members. The study uses Fixed-effect approach to evaluate how the use of IMF program and the conditions imposed directly affects economic growth. A dummy variable is …

Scientific Development Vs. Political Strategy: Nasa’S Commitment To Science Following The First Moon Landing, Sean Van Buskirk

Masters Theses

This work looks at the scientific program of NASA during the Space Race. (1961- 1975) During this period of the Cold War, NASA shifted it role from a political asset of the United States strategy to an agency of scientific discovery. This was not a smooth transition due to political opinions on the wastefulness and role of NASA. Many politicians, citizens and even scientists had doubts about the scientific potential of NASA’s manned missions to the Moon. Despite the power politics, the administrators at NASA were able to break out of the political arena and create a balanced program where …

Synthesis, Characterization And Photophysical Properties Of Ytterbium Complexes Of Functionalized Porphyrins And Porpholactone, Beibei Liu

Masters Theses

The unique structure and superior properties of lanthanide porphyrins enable them to be used in a broad variety of applications, especially in medical diagnosis fields. This research focuses on modifying the porphyrin ligands in various places, resulting in broader absorption in the red region and strong emission in the near-infrared region for these ytterbium(III) porphyrin complexes. The design, synthesis and characterization for DMPH₂-BDP, DMPH₂-COOH, TPLH₂ ligands and YbDMP-BDP, YbDMP-COOH complexes are described. The photophysical properties of these ligands and complexes including their absorbance, fluorescence and quantum yields are also presented. Both the synthesized ligands and …

The Gene Expression Patterns Of Phanerochaete Chrysosporium And Trametes Versicolor On Diverse Lignocellulosic Feedstocks, Noor Osama Alabbasi

Masters Theses

Plant biomass is considered to be an important future starting material for fuels and chemicals, thereby decreasing our reliance on fossil fuels. While direct combustion continues to be a source of fuel, the generation of liquid fuels from plant biomass for transportation has proven to be challenging. Among the limiting factors for conversion of this material to biofuels is the recalcitrant nature of lignocellulose, the primary component of non-starch plant biomass. A strategy to overcome this dilemma is to directly or indirectly use the enzymes from white-rot fungi, which have evolved a unique ability to deconstruct lignocellulose. However, the biochemical …

Numerical Behavior Of Steel H-Plies Repaired Using Layered Concrete Jacket, Fareh Waleed Abudawaba

Masters Theses

“This study developed finite element models (FEMs), using LS-Dyna software, to investigate the repair of corroded steel H-piles using concrete jacket. The concrete modeled as a layered material simulating 3D printed concrete. 3DPC is a new technology that can be used to repair or build structures without formwork by depositing concrete mixture layer by layer. For the 3DPC, this study investigated the feasibility of using alkali-activated concrete (AAC) synthesized using class C fly ash as the main binder. The fresh properties, extrudability, and buildability of the proposed concrete were investigated through open time and deformation tests, respectively. Hardened properties were …

Neural Network Supervised And Reinforcement Learning For Neurological, Diagnostic, And Modeling Problems, Donald Wunsch Iii

Masters Theses

“As the medical world becomes increasingly intertwined with the tech sphere, machine learning on medical datasets and mathematical models becomes an attractive application. This research looks at the predictive capabilities of neural networks and other machine learning algorithms, and assesses the validity of several feature selection strategies to reduce the negative effects of high dataset dimensionality. Our results indicate that several feature selection methods can maintain high validation and test accuracy on classification tasks, with neural networks performing best, for both single class and multi-class classification applications. This research also evaluates a proof-of-concept application of a deep-Q-learning network (DQN) to …

In Vitro And In Vivo Response To A Novel Borophosphate Bioactive Glass, Nada Abokefa

Masters Theses

"Bioactive glasses have been widely used in several biomedical and tissue engineering applications since the late 1960s. Numerous families of bioactive glasses have emerged over the years, with each having its own advantage and disadvantage. One concern common to all families is that most bioactive glasses create a basic or acidic environment when degraded and, therefore, are toxic for cells. Recently, there has been an increased interest in borophosphate bioactive glass (BPBGs) because of their neutral pH, release of therapeutic ions, and biodegradable properties. Despite the growing interest, there is little reported on the bioactivity of BPBGs. The biological effects …

Predator Scent And Presence Alter Mammal Assemblages In The Missouri Ozarks, Usa, Cara Jean Yocom-Russell

Masters Theses

"Species that are vulnerable to predation exhibit a host of behavioral and physiological adaptations toward the avoidance of this outcome: Heightened awareness of surroundings through visual, olfactory, and auditory senses are common ways in which these species avoid detection by predators. While links between direct predator-prey relationships are well established, less is known about how predators can shape overall community structure or the populations of secondary or less frequently consumed prey items. As humans expand into rural areas, the frequency of wildlife conflicts rises. In response, humans look to prevent these events with a variety of methods. One such method …

A Simple Background Elimination Method For Miniaturized Fiber-Optic Raman Probe, Bohong Zhang

Masters Theses

"Raman scattering is called a photonic - molecular interaction based on the kinetic model of the analytic. Due to the uniqueness of the Raman scattering technique, it can provide a unique fingerprint signal for molecular recognition. However, a serious challenge often encountered in Raman measurement comes from the requirements of fast, real-time remote sensing, background fluorescence suppression, and micro-environmental detection.

A new Miniaturized Fiber-Optic Raman Probe (MFORP) for Raman spectroscopy, used especially for eliminating background fluorescence and enhancing sampling, is presented. Its main purpose is to provide an overview of excellent research on the detection of very small substances and …

Investigation Of The Sensitivity Of Human Arm To Small Interaction Forces During Physical Human-Robot Interaction (Phri), Fazlur Rashid

Masters Theses

“Understanding the human motor control strategy during physical interaction tasks is crucial for developing future robots for physical human-robot interaction (pHRI). Effective pHRI depends on humans communicating their intentions for movement with robots. In physical human-human interaction (pHHI), small interaction forces are known to convey their intent between the partners. It is speculated that small interaction forces contain significant information to convey the movement intention of pHHI. However, the mechanism underlying this interaction strategy is largely unknown. Hence, the aim of this work was to investigate what affects humans’ sensitivity to the interaction forces. The hypothesis was that small interaction …

Bond Graph Modeling Of Critical Infrastructures For Cyber-Physical Security Implementation, Michele Jane White

Masters Theses

“In developed societies, there exists infrastructure vital to everyday life. This includes water and power systems. Technology is quickly evolving and being implemented on these utilities. This technology can range from smart metering in neighborhoods to volume sensors in local waste water treatment facilities. When networking, sensing, monitoring, or control devices are integrated with infrastructure it is considered a cyber physical system, or CPS. When information about an important physical system is connected to the virtual world, it is opened up to security risks. Cyber security can be provided to the CPS by monitoring the physical state of the system …

Biochemical Assay Invariant Attestation For The Security Of Cyber-Physical Digital Microfluidic Biochips, Fredrick Eugene Love Ii

Masters Theses

“Due to the devastating global impact that infectious diseases have had, especially in developing countries, the demand for access to adequate resources to combat sickness continues to be a heavy burden. Reliable and affordable diagnostics is a vital first line of defense in fighting outbreaks and providing accurate treatment. Digital microfluidics biochips capable of running multiple diagnostic tests on a single platform are an emerging technology that are increasingly being evaluated as a viable platform for rapid diagnosis and point-of-care field deployment. Although these systems offer many benefits, processing errors are inherent. Therefore, cyber-physical digital biochips are being investigated that …

Topological Biclustering Artmap, Raghu Yelugam

Masters Theses

”Detection of gene mutations is central for assessing genetic factors affecting disease predisposition, genetic causes of a particular disease, and gene-targeted treatment. DNA microarray methods are widely used to detect mutations by contrasting the expression levels of thousands of genes together under varying experimental conditions. The experimental conditions could be diseased cell states compared with the normal cell states. Biclustering, a robust exploratory data analysis tool, can be applied to microarray data to detect subsets of genes that co-express highly only for a subset of experimental conditions. Such detection is crucial for gaining insights into gene regulatory networks, differential gene …

A Systematic Analysis Of Eye-Tracking Metrics For Sleepiness, Debasis Roy

Masters Theses

”Sleepiness or sleep deprivation is a serious hazard that can be life-threatening in carrying out certain tasks (e.g., when driving or executing attention-critical tasks). Eye movement can provide cues on sleepiness. Hence, eye-tracking metrics have the potential to detect sleepiness.

In this research, we used a systematic analysis approach to identify eye-tracking metrics for sleepiness. We used several databases to identify independent experimental studies that have used eye-tracking metrics to assess sleepiness. We identified 25 studies that included 674 participants where the participants’ data were captured both in an alert state and in a sleep-deprived state. In the analysis, we …

A Meta-Analysis: Gamification In Education, Yalin Wang

Masters Theses

“Gamification has been used in a variety of contexts including education. In order to understand the effects of gamification in education, a meta-analysis was conducted. A bottom-up approach was used to analyze the effects of game design elements on learning outcomes found in the literature search. The result suggests that gamification can enhance student learning outcomes. Elements such as points, leaderboards, competitions, progress bars, feedback, and collaboration have medium to large effect sizes. Gamification also has larger effects on young children in elementary education than learners at other education levels. The study offers suggestions and guidelines for educators on the …

Immortality Through Mind Uploading And Resurrection, Adam M. Leis

Masters Theses

Technology in the last century has flourished exponentially. Previous fantasies are becoming cutting-edge discoveries like global communications, encyclopedic knowledge at the average person’s fingertips, and even medical advances used to improve and extend one’s quality of life and life expectancy. As technology pushes the boundaries of what is possible, ambitious visionaries look to solve the arguably greatest problem known to humanity: death. Transhumanists aiming to use technology to overcome this great human limitation, mortality, present the newest proposed solutions to life’s oldest challenge. One of these solutions, mind uploading, is perhaps the most ambitious, but it is not without its …

An Examination Of The Integration Of Augmented Reality In Science Curriculum, Cathleen A. Bierman

Masters Theses

This study examines students’ success rate and level of engagement in a science classroom by using augmented reality (AR) specifically merge cube. Students’ success rate is measured by their grades, which can determine if the student understands the material. Engagement is measured by observing whether or not the students are asking questions, volunteering information, working well with others, paying attention in class, and participates actively in discussions. The two research questions guided the study:1. Does the use of a merge cube in the science classroom improve participants’ success rate in learning science? and 2. Does using a merge cube increase …

Listening To Their Voices: A Narrative On Campus Climate For Trans* Students, Cloe Bourdages

Masters Theses

The purpose of this study was to examine the impact that campus climate has on trans* student academic and personal success. This qualitative study was explored through individual interviews by four participants. Participants discussed practices which enabled and inhibited their success; which lead to the finding of four themes: identity and validation, academic climate, climate outside of the classroom, and resources and services. Overall, a positive correlation in trans* student success was found when institutions use inclusive practices within their work. Lastly, the study provided implications for higher education recommended by both the participants and the researcher.

Preparing For Life After College: The Career Skills Learned By Resident Assistant Alumni, Kala Cousineau

Masters Theses

According to the National Association of Colleges and Employers (NACE), there is a high value placed on college graduates who acquire skills that can be utilized to attain their professional goals (2015). On college campuses, the resident assistant (RA) role is one of the many opportunities the residence life department has that can help develop students and their career readiness (Peck, 2017). There is a lack of research looking at what transferable skills students in the resident assistant position acquire and then use in their careers post-graduation. This qualitative study utilized semi-structured interviews to explore what skills former RAs learned …

Speaking To Power: An Exploration Of College Students’ Experiences With Student Lobbying, Catie Witt

Masters Theses

The United States is currently experiencing an increase in student activism compared to recent years (Jason, 2018). While research on student activism is vast, there is little research that has examined student activism through student-run lobby groups. Research seems to be non-existent when it comes to exploring the experiences of students involved in student lobbying as a form of activism. Studies also often focus on the outcomes of student activism, rather than the student activists themselves. This qualitative study utilized semi-structured interviews to explore the experiences of students who had been involved in a student-run lobby group at a rural …

Examining The Relationship Between Acculturative Stress And Religion/Spirituality Among International Students, Ly'jerrick Ward

Masters Theses

The purpose of this study was to explore the relationship between acculturative stress and religion/spirituality of international students. This study utilized Sandhu and Asrabadi’s (1994) Acculturative Stress Scale for International Students (ASSIS) as well as the Santa Clara Strength of Religious Faith Questionnaire (SCSORF) created by Plante and Boccaccini (1997). Much research exists on how international students adapt and acculturate to a host country. This research will add to the body of literature that exists regarding how international students use their religion/spirituality to deal with acculturative stress. Students in this study were asked a number of questions from the ASSIS …

Immediate Response Of Black Basses To Dam Removal Is Determined By Habitat Preference, Reuben Frey

Masters Theses

Dams affect the abundance of fish species in lotic systems by altering flow regime and available physical habitat. Removal of dams may mitigate these effects and generate a change in species abundance and fish community structure. Understanding the effects of dam removal on gamefish species is essential in making management decisions. I investigated how populations of Smallmouth Bass (Micropterus dolomieu), Spotted Bass (M. punctulatus), and Largemouth Bass (M. salmoides) were affected by the presence and removal of two low-head dams in a Midwestern river system. I used data collected during fall and spring from …

An Exploration Of The Perception Of Faith Development At A Midwestern Public Institution, Zachary Sandoval

Masters Theses

Despite research indicating benefits to religious or faith involvement, there is an increase in individuals that claim to have no religious affiliation. Additionally, most research that has investigated faith development of college students has been conducted at private religious institutions. This qualitative study utilized semi-structured interviews to examine students’ perceptions of various interactions on their faith development at a public, rural Midwestern institution. Moreover, this study investigated how the institution of interest can better support spirituality on campus and the role student affairs can have on spiritual development. Thematic material was developed through Parks’s (2000) theory of faith development. Results …

Development Of Fluorescence Microscopy Approaches To Study Subcellular Protein Transport And Enzymatic Activity, Anchal Singh

Masters Theses

Understanding the subcellular localization of proteins and their activity is important in understanding their normal function in eukaryotic cells. Fluorescence cellular imaging techniques can selectively and sensitively visualize subcellular biochemistry. Using this approach, two different methods were employed in this thesis. The first focused on studying protein import into peroxisome and the other on monitoring the activity of an endoplasmic reticulum (ER)-localized enzyme, human carboxylesterase 1 (CES1).

Peroxisomes are mainly known as the center for long chain fatty acid b-oxidation as well as the production and detoxification of hydrogen peroxide. Proteins which are needed in the peroxisomes are encoded in …

Relationships Between Parent-Child Interactions And Sexual Attitudes, Behaviors And Online Activity In Young Adulthood, Emily Donar

Masters Theses

The current study examined correlations between parent-child relationships and its relationship with the sexual attitudes and behaviors of young adults. Participants were asked to report on their perception of communication and quality relations with their parents. The findings indicate there was a relationship between the perception of high-quality parent-child relationships, likelihood of having extensive sexual experience, tendency to hold specific sexual attitudes and the frequency of online sexual behaviors. Explanations regarding the discrepancy between previous findings and the current study were discussed, including the sexual fluency of those with conservative attitudes. The consideration of gaps in literature incorporating online sexual …

Metal Complexes Of Bis(Pyrazolyl)Methane-Based Ditopic Ligands, Pubudu Nuwan Perera Hapuarachchige

Masters Theses

No abstract provided.

Xylan-Derived Carbon Nutrient Acquisition By Caulobacter Crescentus, Rhoda Ekuama Inkoom

Masters Theses

Bacterial decomposition of xylan and uptake of xylan-derived carbon compounds require a combination of enzymes, proteins, and complex molecular mechanisms. Bacteria have evolved molecular mechanisms for its utilization depending on its environment and source of xylan. Caulobacter crescentus, a Gram-negative bacterium which lives in an aquatic oligotrophic environment, exhibits asymmetric division which is an adaptive feature for its nutrient poor habitat. Although aromatic hydrocarbon and cellulose-derived mono-, di- and oligosaccharide utilization has been reported in literature, its xylan-derived carbon compound utilization is yet to be characterized. In this study, C. crescentus utilizes xylan-derived monomers arabinose, xylose and acetate as …

Chemical Diversity And Antimicrobial Properties Of Spike-Rush Species And Related Genera (Genus Eleocharis, Family Cyperaceae), Yiru Zhang

Masters Theses

The focus of this research was to explore the chemical diversity and antimicrobial properties of Eleocharis dulcis. By using methanol as a solvent to extract phytochemicals, qualitative comparisons were made between HPLC chromatograms from Eleocharis species and other genera. Meanwhile, this study also examined the antimicrobial properties of phytochemicals extracted from various tissues of Eleocharis dulcis in two different solvents (water or methanol) against two Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli) and two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) using a disc diffusion assay. The results suggested that the extracts had limited antimicrobial properties at up to 100 …

The Exclusivity Of The Christian Faith: A Case For Christ-Alone In A Culture Of Relativism, Brandon Keith Sinclair

Masters Theses

The proposition of absolute and exclusive truth in a culture permeated by relativism is among the most important discussions of today. The answer to this dilemma is imperative. Relativism has not only taken captive secular society, it has infiltrated the thinking of many professing Christians. The traditional Christian message has always been one of exclusivity and Christ-alone. The challenge for the Christian Apologist in a culture of relativism is three-fold: Establish the existence of absolute and exclusive truth, nullify the arguments presented by relativism as unreasonable, illogical, and fallible, and to make a solid case for the unsurpassable uniqueness of …