Digital Commons Network^™

Agritourism Development In Southwest Michigan: Motivations Of Agritourists And Operators, Esther Akoto Amoako

Masters Theses

National agricultural statistics show that the number of agritourism farms and the proportion of agritourism related revenues in the United States has steadily increased during the last ten years, especially among small family farms. The recent growth in agritourism is both demand - and supply-driven. However, there are limited studies that explore agritourism motivations from both the visitors' and operators’ perspectives. This study examines what the agritourists' and operators’ motivations are and the challenges facing the industry to provide information for those currently involved and those wanting to include agritourism in their operations. Online and in-person surveys and unstructured interviews …

In Search Of A More Republican Naval Defense: Thomas Jefferson, Congress, And The Gunboat Debate, 1802-1810, Ethan David Zook

Masters Theses

In 1801, Thomas Jefferson, the third President of the United States, sought to reduce the national debt, eliminate taxes, and reduce spending regarding the U.S. Army and U.S. Navy. To this end, Jefferson enlisted the assistance of congressional Republicans to authorize and fund the construction of lightly armed, coastal-defense gunboats. By examining Jefferson’s writings and congressional speeches, “In Search of a More Republican Naval Defense: Thomas Jefferson, Congress, and the Gunboat Debate, 1802-1810” explains both Jefferson’s interest in the small warships, and why from 1801 to 1809 Congress appropriated $1,205,500 to build approximately 180 gunboats. This thesis argues that Jefferson …

Exploring The Essence Of Participation Of The Female Puerto Rican Basketball Athlete, Roberto Medina

Masters Theses

In Puerto Rico, little is known regarding how female collegiate and professional basketball players perceive and experience their playing participation. The population of girls playing basketball has experienced recent increases. However, the culture in Puerto Rico has yet to embrace the participation of female basketball athletes. Attempting to address the void in scholarly literature, this study explored female athlete participation perceptions in competitive basketball within the Puerto Rican sport culture. The investigation implemented a qualitative approach using a phenomenological methodology to form descriptive themes. Data was obtained from 14 female basketball athletes, of which 10 were student-athletes, and four were …

Reeformation, Adelina Koleva '10, Aysu Aysoy

Masters Theses

As the sea level rises, millions of vulnerable homes will be put at risk. Simultaneously, vital coastal habitats are disappearing due to pollution and rising ocean temperatures. The domain for this thesis will focus on a coastal region in Makassar, Indonesia, where the research ambition is to generate ecologically resilient, multifunctional offshore structures for urban living. The design of these structures aims to perform at multiple scales. Firstly, it seeks to support an underwater ecosystem through a porous topology capable of occupation by marine life from the cellular level. This will provide opportunities for the structure to act as a …

Analyzing Students' Historical Thinking Skills At Different Grade Levels, Aaron Callaway

Masters Theses

The purpose of this research study is to compare and contrast the historical thinking abilities of students in distinct age-groups through their use of disciplinary literacy skills. This was accomplished by having eight total subjects from four distinct student age-groups participate in a guided inquiry activity about the beginning of the Korean War. As they engaged in the inquiry activity, the participants’ cognitive process and responses to the researcher’s questions were recorded and transcribed and later analyzed. These transcriptions were juxtaposed with one another in search of any major patterns that emerged during the inquiries. Several patterns were identified including …

Music Identity And Listening Preferences Of Students In High School Performing Ensembles, Caitlin Harris

Masters Theses

The purpose of this qualitative action research study was to examine and identify the listening preferences and musical identity of high school members of performing ensembles. Participants were involved in five stages of data collection; the initial questionnaire, the first listening journal, a feedback questionnaire, the second listening journal, and individual interviews. Data was collected during the 2017-2018 school year, and participants completed all phases during their personal time. Three research questions framed this study:

1) How do the listening preferences of students help shape their musical identities?

2) Do students’ listening preferences outside of school conflict with their in …

Effects Of Chemical Variation On Competition And Insect Communities Across Solidago Altissima Genotypes, Bryan Scott Foster Ii

Masters Theses

Individuals within a plant species can differ greatly from one another, especially regarding the range of chemical compounds produced. However, the functions of many of these chemicals are unknown, but likely include defenses against herbivores, attractants for pollinators and seed dispersers, as well as mechanisms for resource competition. To assess the effects of foliar chemical composition on interspecific plant competition and insect communities, I conducted a common garden and greenhouse experiment using 24 genotypes of the allelopathic species Solidago altissima for which the foliar chemistry had been characterized. Using these data and chemical profiles of S. altissima, I linked …

Is Context Dependency Imperative To Understanding The Impacts Of Invasive Plants?, Brendan B. Haile

Masters Theses

Introduced exotic species have a tendency to become invasive and impact local biological communities. Invasions often impact community attributes such as cover and species richness, but these factors may also regulate patterns of invasion. In such cases, impacts may be dependent on the invasion context. We used data from the Buell-Small Succession Study, a long-term permanent plot study in the piedmont region of New Jersey, to document context dependency in invasion. To do this, we analyzed the factors that affected the colonization and growth of four invasive species, Alliaria petiolata, Lonicera japonica, Microstegium vimineum and Rosa multiflora, as well …

On Predicting Stopping Time Of Human Sequential Decision-Making Using Discounted Satisficing Heuristic, Mounica Devaguptapu

Masters Theses

“Human sequential decision-making involves two essential questions: (i) "what to choose next?", and (ii) "when to stop?". Assuming that the human agents choose an alternative according to their preference order, our goal is to model and learn how human agents choose their stopping time while making sequential decisions. In contrary to traditional assumptions in the literature regarding how humans exhibit satisficing behavior on instantaneous utilities, we assume that humans employ a discounted satisficing heuristic to compute their stopping time, i.e., the human agent stops working if the total accumulated utility goes beyond a dynamic threshold that gets discounted with time. …

Modeling And Control Of Cascaded Bridgeless Multilevel Rectifier Under Unbalanced Load Conditions, Sai Hemanth Kankanala

Masters Theses

“The goal of this project is to model and control a novel unidirectional cascaded multilevel bridgeless rectifier as an active front end in medium and high voltage applications. This topology has many advantages over a conventional cascaded H-bridge rectifier, such as lower implementation cost, higher reliability, and greater flexibility with similar power quality. The complete design process of the proposed converter is developed step by step in order to meet all the desired objectives. The steady-state mathematical model is used to develop a method for the voltage balancing of dc cells. Power factor analysis is discussed to mathematically derive requirements …

Microgel Placement And Plugging Performance In Sand Filled Fracture For Conformance Control, Baihua Lin

Masters Theses

“Preformed particle gels (PPG) has been widely applied for conformance control in heterogeneous reservoirs with fractures and super-K channels. As a plugging agent, PPG could plug the fractures or high permeability streaks and divert the displacing fluid into low permeability matrix. Many studies have been conducted to investigate the potential of PPGs as a water cut reduction and improved oil recovery agent using homogeneous sandpacks or heterogeneous core samples with man-made open fractures. However, no research has been carried out to understand how PPG injection and plugging performance will be changed if the fractures are filled with sands. Herein, the …

Inclusion Control In Steel Castings, Koushik Karthikeyan Balasubramanian

Masters Theses

“Non-metallic inclusions are mainly comprised of oxides, sulfides, and nitrides, and are formed in liquid steel during the melting and refining process, as a result of reoxidation, worn-out refractories, or entrained slag. The notch toughness of high strength steels is particularly susceptible to the type, number, size, and distribution of non-metallic inclusions. High manganese and aluminum austenitic steels, or Fe-Mn-Al steels, have gained much interest in the military and automotive sector because of their excellent combinations of high strength and toughness. However, these steels are subject to both oxide bifilms and aluminum nitride, AlN, inclusions which form during melting and …

Nanodiamonds And Carbon Nano-Onions Ceramic Composites And Their Applications, Ibrahim Munkaila Abdullahi

Masters Theses

"Luminescent nanodiamonds are photostable non-blinking fluorescent biocompatible, non-toxic, functional Zable materials made from high-pressure high temperature (HPHT) microcrystalline diamonds. For long, the scientific community has been investigating for a clean, efficient and cost-effective technique to reduce the size of fluorescent microcrystalline diamond into nanodiamonds. Their color center, responsible for the fluorescent properties are crucial for their applications, including biomedical imaging, nano sensing, quantum computing etc, and therefore should not be affected significantly by the method of size reduction applied. A novel size reduction technique that is based on explosive fragmentation was developed and the corresponding fragmented diamonds obtained were characterized …

Mid-Infrared Chiral Metsurface Coupling With Molecular Vibration, Md Shamim Mahmud

Masters Theses

“The mid-infrared design of chiral metamaterial shows a tremendous absorption capability of infrared rays, and it has the significant application of circular dichroism based device development. Plasmon-phonon coupling is one of the application of metamaterial that provides a new path for tailoring the surface in the nanoscale, which is also applicable in molecules detection. It is possible to change the Plasmon-Phonon coupling strength not only through the chemical change of molecules but also by changing the metamaterial light-matter interaction property. So far, linearly polarized light shows the strong coupling between metamaterial and molecules. However, it is possible to observe strong …

The Resurrection Of Christ: A Bayesian Analysis Of Explanatory Hypotheses, Nicola Jérôme Liebi

Masters Theses

The goal of this thesis is to determine under which circumstances a supernatural hypothesis should be preferred over the most probable natural hypothesis to explain a set of historical facts. The supernatural hypotheses include the objective vision hypothesis and the resurrection hypothesis, while the subjective vision hypothesis is taken to be the most probable natural hypothesis. Each of them can be found in the recent literature on the Resurrection and is still advocated by major proponents. The facts by which these three hypotheses are judged are agreed upon by most scholars. They include (1) Jesus’ death by crucifixion, (2) the …

Design, Synthesis, And Characterization Of Chemical Tools To Study Peroxisomal Import, Jhalak N. Timilsena

Masters Theses

Peroxisomes are dynamic and interconnected single lipid membrane bound organelles found in the eukaryotic cells which are involved in various biochemical processes including the b-oxidation of very long chain and branched chain fatty acids, metabolism of reactive oxygen and nitrogen species, and reduction of hydrogen peroxide among others. These organelles are known to host numerous proteins and enzymes depending on the cellular environment. All of the proteins needed in the peroxisomes are encoded in the nucleus and synthesized in the cytosol which are then transported to the peroxisomes with the help of a sophisticated protein-transport machinery. Pex5 is one of …

Representations Of Africa In Us Media: A Semiotic Analysis Of Ebola: The Doctor’S Story And Body Team 12, Olubusola Akinpelu

Masters Theses

The Western media has often been criticized for biased coverage of happenings in and around Africa. The 2014 Ebola outbreak created a lot of media attention for West Africa, and by extension, the entire continent. This study examined to what extent postcolonial discourses were infused in two films from the HBO Trilogy: Ebola: The Doctor’s Story (2015) and Body Team 12 (2015). To analyze these texts, I took a semiotic approach by identifying, describing and interpreting the signs in both films, to discuss the postcolonial discourses in three broad themes. Ebola: The Doctor’s Story (2015) was analyzed in the …

Important Factors Influencing Attendance At Northwoods League Games, Ryan Eiche

Masters Theses

The purpose of this study was to examine the importance of various factors as they related to attendance at Northwoods League baseball games. This league was an ideal fit for the study as little research has been conducted on this level of baseball. A survey was sent out via the Facebook page of the Lakeshore Chinooks to gather responses from fans on what factors encouraged attendance. Fans were asked to then rate how important each factor was on a five-point sliding scale. The research revealed that situational factors such as convenience, day and time, and weather of the game were …

Design And Comparison Of Unoptimized And Optimized Gray Code Multi-Level Systems, Shirly Adams Gamliel

Masters Theses

“As the conventional binary MOS-based VLSI technology is reaching limitations in chip area, speed, and power, new technologies are being researched. Some such technologies relate to multi-level logic design. This thesis explores the process and benefits of applying and optimizing multi-level design techniques to an existing Gray code binary system. Specifically, the multi-level system is designed using CoreMem technology and is optimized using Indira Dugganapally’s optimization techniques.

The first step is generating the n-bit binary and quaternary truth tables for an encoder’s Gray code output and additional desired data. Then, the data for each n-bit system is arranged in multi-level …

On The Investigation Of Hot Tearing Behavior Of Continuous Cast Steel, Yanru Lu

Masters Theses

”Hot tearing has long been recognized as a major problem that plagues the development of the continuous casting process and results in low-quality products. Understanding of the mechanisms and the required conditions for the hot tearing formation is important for industries but has not been well-established yet. Thus, this research focuses on the hot tearing issue observed in continuous cast steel, by providing a summary of the current research progress and then introducing a new laboratory method to determine the thermo-mechanical properties relevant to hot tearing of different steel grades under different solidification conditions. In this method, an apparatus was …

Terministic Screening And Conspiracy Theory In Political Communication: A Critical Analysis Of Trump’S Rhetorical Ties To Fair And Alex Jones Through “Invasion” Immigration Discourse, Emily A. Wiedeman

Masters Theses

This study focuses on the political and social communicative implications that result from mirrored anti-LatinX immigration discourses from three different political entities: President Donald Trump, special-interest hate group the Federation for Immigration Reform (FAIR), and conspiracy theorist Alex Jones. Through a critical communication lens, the author presents and discusses the influence of presidential communication, and its ability to contribute to and bolster xenophobic political undertones, creating a communicative environment that functions to empower and embolden proponents of racially based discrimination. Further, this study discusses the power presidential communication has to legitimize, normalize, and amplify the racist and xenophobic anti-LatinX discourses …

Seasonal Variation In Mitochondrial Bioenergetics Of The Bluegill Sunfish, Lepomis Macrochirus, From A Shallow Midwest River, Derick Isaac Lamptey

Masters Theses

As average global temperature increase, the frequency and magnitude of extreme temperatures in shallow aquatic ecosystems are more ubiquitous. In order to understand how these changing thermal regimes affect aquatic ectotherms, it is essential to develop studies evaluating the response of ectotherms to seasonal fluctuating thermal regimes. Previous studies on fluctuating temperature regimes have reported an increased physiological stress leading to morphological, behavioral and biochemical adaptations. From the latter, the adaptive capacity and seasonal performance associated with optimal function of the oxidative phosphorylation system (OXPHOS) are key for species persistence. However, studies on this matter are scarce. This study explores …

Making The Dream Become A Reality: How Student Affairs Professionals Support Undocumented Students, Jacqueline R. Garcia

Masters Theses

There are complex challenges undocumented students in higher education face including the legal system, psychological stressors, campus climate, and financial assistance. This qualitative study was designed to look at how student affairs professionals support undocumented students and their critical role in supporting these students in navigating higher education. Four semi-structured interviews were conducted with participants whose professional position was specifically focused on working with undocumented students. From this study, the researcher identified the challenges undocumented students faced, beneficial resources that supported them, and additional needs that were not being met on these campuses. Recommendations for programs and services for student …

Field Composition And Home Field Advantage In Ncaa Division 1 Men’S Soccer, Carlos Sendin Castelao

Masters Theses

Home Field Advantage (HFA) is a well-established and documented phenomenon at both the collegiate and professional levels. There are many factors that contribute to home field advantage such as crowd involvement, travel considerations, and environmental factors. This research explores a couple of basic underlying mechanisms of HFA by focusing on how important field composition is in determining HFA in NCAA Division I men’s soccer. Field composition is thought of here in terms of surface type (i.e., artificial turf v. natural grass) and field dimensions (i.e., field length, field width and overall size). This study analyzes the …

Do Shifts In Labor Shares In Productivity Growth Affect Poverty And Inequality? A Comparative Study Of Sub-Saharan Africa And Asia, Precious W. Allor

Masters Theses

This paper examines whether productivity growth induced by intersectoral labor movement affects inequality and poverty. To address this question a nonparametric shift-share decomposition technique is employed to decompose productivity growth into the structural change component; the component of productivity growth that is induced by the intersectoral labor movement, and the technological change component; the component of productivity growth that is induced by capital or improvements in productive efficiency. The paper then examines the long-run impact of structural change-induced productivity growth on poverty and inequality for a sample of 28 countries, and with a focus on Sub-saharan Africa and Asia. The …

Using Sport Identification & Rhetorical Strategy: Evaluating An Ncaa D1 Collegiate Football Team’S Social Media Presence, Maria Baldwin

Masters Theses

Using social media platforms to build identification amongst stakeholders is of increasing importance for a growing range of organizations. Social media represents a powerful tool for marketing and developing business. In sports organizations, the use of social media can build identification amongst a fanbase by using George Cheney’s (1983) rhetorical strategies. The purpose of this study was to explore the content of a regional D1 university football team’s twitter and Instagram platforms, using a content analysis to clarify the organization’s use of rhetorical strategies and design elements to foster sport identification amongst their social media fanbase. Many sports organizations use …

Investigating The Economic Impacts Of Globalization On Employment Generation In Africa: Case Study Of The Ecowas, William Dickson Amenyo

Masters Theses

A review of the ongoing debate on the economic impacts of globalization on employment in developing economies shows that the predictions of most trade theories that, an increase in globalization would result in more employment in labor abundant countries has not always proven to be true. This study actually examines the employment impact of economic globalization to recipient economies – ECOWAS member states. The analysis has employed a balanced panel dataset of 13 ECOWAS member nations over the period 1990 – 2017. Based on the Fixed Effects estimation approach, the empirical analysis reveals that over the full sample, economic globalization …

How Thick Is The Stained-Glass Ceiling?: An Exploration Of Heteronormativity In Religious Circles, Hannah Rae Smothers

Masters Theses

The 2012 National Congregations Study found that only 11.4% of the total clergy in the United States were women (ARDA 2012). As the congregation size grows, that number declines further, with data indicating only 3.4% of congregations with 1,000 or more members have a female leader. The number of women religious leaders increased by less than one percent between 1998 and 2012. These statistics work well to outline a phenomenon for female religious leaders, their inability to break the stained-glass ceiling. Many religious groups in the United States allow women to become ordained leaders. However, some of the largest religious …

The Living Mission: Mission Statements Evidenced In The Student Experience, Darek D. Hollis

Masters Theses

Mission statements are thought to be documents that hold the core purposes of an organization. While several studies have examined the various aspects of higher education mission statements, few have explored how the themes within mission statements are transferred to those the institutions is serves, it’s students. This qualitative studied used semi-structured interviews with graduating senior students at a mid-sized, Midwest institution to examine whether or not the missional themes were evident in and valuable to the students’ experience. The result of the study found that the missional themes were in general present and valuable in the students’ experience. The …

A Cloning Strategy For Expression Of Fungal Hemicellulases In Plant Systems, Amer Alrudayan

Masters Theses

Lignocellulosic biomass is notoriously difficult to deconstruct into lignin, hemicellulose, and cellulose fractions without the use of biochemical, chemical, and/or mechanical pretreatments. These pretreatment strategies add operational cost and in some cases produce hazardous waste that poses health and safety risks. Direct biological pretreatment from biomass-degrading bacteria and fungi may significantly reduce the costs and risks associated with these traditional strategies due to the innate ability of these organisms to modify plant cell walls. An additional measure that could further reduce the expenses associated with lignocellulosic biomass fractionation is genetic modification of the lignocellulosic feedstocks, which can be accomplished by …