Digital Commons Network^™

An Efficient Protocol For Root Studies In The Common Sunflower Using Composite Plants, Tyler Parks

Masters Theses

Sunflower, Helianthus annuus, is one of the most important oilseed crop in the world. Oil from the seeds is prized for its' exceptional quality and flavor. Despite this, sunflowers have been forced onto marginal lands often on semi-arid and non-fertile soil, due to disease pressures and economics making it critical to produce more resilient lines and varieties to withstand these new stresses. The recent availability of the sunflower genome can allow genome-wide characterization of gene families. Stable transformation protocols, which can be used for characterization studies, have been developed for H. annuus using Agrobacterium tumefaciens, but they produce …

Fighting Poverty With Passion: Americorps Vista As A Replicable Solution To Local Poverty, Jonathan M. Williams

Masters Theses

This study examines the replicability and effectiveness of AmeriCorps VISTA projects in fighting poverty at the state and local levels. AmeriCorps VISTA (Volunteers in Service to America) is the chief domestic program of the Federal Government's Corporation for National and Community Service. The scope of this study focuses on the seven states that comprise the Corporation's North Central Cluster, (Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, and Wisconsin) and the AmeriCorps VISTA projects that operated in these states due to funding from the 2009 American Recovery and Reinvestment Act. The selected region offers a microcosm of the nation's geographical and political …

Understanding The Transition To College For Students With Learning Disabilities, Breanna Rehor

Masters Theses

This study sought to investigate the transition to college for students with learning disabilities at a mid-size Midwestern university. A qualitative approach was used to provide insight in student's perspectives on the transition from high school to college. Three undergraduate students with learning disabilities were individually interviewed to gain understanding of the transition to college. The results demonstrated a critical need for institutions to address the transition to college for students with learning disabilities and create incentives that guide support for student success. Students utilizing various support systems like academic student services, and peers. The transitions to college for students …

Designed Extrudate For Ceramic Additive Manufacturing, Devin Mcmillen

Masters Theses

"The objective of this thesis work was to design ceramic paste systems that assist in achieving a high theoretical density ( > 95%) after deposition by a novel additive manufacturing process, i.e. Ceramic On-Demand Extrusion (CODE). The work is encompassed in five main sections: Sections 1 and 2 provide an introduction and literature review of relevant topics for the following sections of experimentation. Section 3 provides an analysis of a reaction chemistry to identify three discrete materials that could be combined via CODE and result in zirconium diboride (ZrB₂) post-sintering. Section 4 describes the development of a high solids …

Characterization Of Free-Radical Solution Polymerizations Of Acrylamide Initiated By Persulfate Initiator Systems, Yashu Chen

Masters Theses

”In order to reduce the water production and improve the oil recovery of mature reservoir, various conformance control technologies have been extensively developed. Preformed particle gel (PPG), a cost-effective plugging agent, has been successfully applied to block the high permeability zone and thus to displace the water to up-swept zone.

A common PPG based on polyacrylamide hydrogel have been wildly used. Identifying the parameters that affect gelation performance and understand how these parameters affect the performance is very useful to predict and manipulate the gelation time and to control the performance of gels.

The objective of this research is to …

Multiscale Approaches Toward Advanced Lithium-Ion Battery: From Nano To Meso Scale, Susmita Sarkar

Masters Theses

“Battery performance and its degradation are determined by various aspects such as the transport of ions and electrons through heterogeneous internal structures composed of constituent particles, kinetic reactions at the interfaces, and a corresponding interplay between mechanical, chemical, and thermal responses. Further, modern battery materials require a variety of engineering processes such as coating, doping and mixing. As a result, in order to fully understand the behavior of the battery material and improve battery performance, it is necessary to understand and control the individual particle behavior and then connect it to the electrode. This study elucidated the physical phenomena associated …

Enhancement Of Performance Of Micro Direct Ethanol Fuel Cells By Structural Modification, Sindhuja Valluri

Masters Theses

“Direct Ethanol Fuel Cells (DEFC’s) are becoming more important in current energy conversion devices because of their higher efficiency compared to other fuel cells. However, the performance of current DEFC’s is not efficient in providing energy to meet increasing energy demand. The objective of this work is to make the cell compact and at the same time improve performance. For this purpose, we have removed gasket and endplates to make structure compact and increased surface area by developing a new corrugated structure. This work also uses 3D printing technology Fused Deposition Modeling (FDM) to make pocket backing case to improve …

Data Analysis Of Low-Salinity Waterflooding To Enhance The Oil Recovery In Sandstone Reservoirs, Nadia Ariani

Masters Theses

"The lack of a single reasonable general mechanism to describe how low-salinity waterflooding can improve oil recovery in both laboratory and field pilot projects has increased the interests of many researchers and stakeholders. There has not been observed the relationship of formation brine salinity and injected brine salinity to see how much salinity is reduced to produce the maximum enhanced oil recovery by LSWF. There is no guidance in what EOR stage the LSWF is best implemented. This work collects data from various published literature to develop a comprehensive data set regarding low-salinity waterflooding in sandstone reservoirs. The LSWF mechanisms …

Facile Synthesis Of Nanostructured Metal Borides And Composites For Applications In Sustainable Energy, Maalavan Arivu

Masters Theses

"Electrocatalytic water splitting is a promising solution for sustainable energy generation since one of the half reactions lead to the formation of H₂ which is a clean fuel. The other half of the reaction leading to O₂ evolution is an energy intensive process necessitating the need for an electrocatalyst to break the activation barrier for the commencement of the reaction. In this work we will focus on expanding the family of non-oxidic OER electro-catalysts, especially borides, whereby, apart from facilitating delocalization of electron cloud on the catalytically active transition metal site, low anion electronegativity and increased covalency in …

An Integrated Method For Understanding The Fluid Flow Behavior And Forecasting Well Deliverability In Gas Condensate Reservoirs With Water Aquifer Drive, Abdulaziz Mustafa Em. Ellafi

Masters Theses

"Gas condensate reservoirs constitute a significant portion of global hydrocarbon reserves. In these reservoirs, as bottomhole pressure falls below the dew point, liquid develops in the pore space. This results in the formation of a liquid bank near the wellbore region that decreases gas mobility, which then reduces gas inflow. Some gas condensate reservoirs have bottom aquifer drive, which also negatively impacts gas production. This research used a field case study to demonstrate an integrated workflow for forecasting well deliverability in a gas condensate field in Libya. The workflow began with the interpretation of open-hole log data to identify the …

Computational Intelligence Methods For Predicting Fetal Outcomes From Heart Rate Patterns, Vinayaka Nagendra Harikishan Gude Divya Sampath

Masters Theses

"In this thesis, methods for evaluating the fetal state are compared to make predictions based on Cardiotocography (CTG) data. The first part of this research is the development of an algorithm to extract features from the CTG data. A feature extraction algorithm is presented that is capable of extracting most of the features in the SISPORTO software package as well as late and variable decelerations. The resulting features are used for classification based on both U.S. National Institutes of Health (NIH) categories and umbilical cord pH data. The first experiment uses the features to classify the results into three different …

Battery Optimization In Microgrids Using Markov Decision Process Integrated With Load And Solar Forecasting, Prateek Jain

Masters Theses

"Rising climatic concerns call for unconventional/renewable energy sources which reduce the carbon footprint. Microgrids that integrate a variety of renewable energy resources play a key role in utilizing these energy resources in a more efficient and environmentally friendly manner. Battery systems effectively help to utilize these energy resources more efficiently. This research work presents a framework based on Markov Decision Process (MDP) integrated with load and solar forecasting to derive an optimal charging/discharging action of Battery with rolling horizon implementation. The load forecasting regression models are discussed and developed. Also, various solar forecasting models like clear sky, multi-regression and Non-Linear …

Cellular Hitchhiking Via Injectable Microparticles, Daniel Smith

Masters Theses

"Tissue engineering is a process of developing new tissues in a host. Tissue engineering draws upon revitalizing damaged tissues that otherwise would not heal completely from the body's natural response. To augment the body's natural response to impairment, cells can be transplanted to the afflicted area to boost the healing response. Implementing these cells onto scaffolds and transplanting them into the body improves the healing response dramatically. Tissue regeneration improves when a biodegradable scaffold is used in conjunction with cells to augment the body's healing response. Microparticles provide a surface that can mimic the environment cells perceive in vivo, …

Card: Concealed And Remote Discovery Of Iot Devices In Victims' Home Networks, Sammie Lee Bush

Masters Theses

"Smart devices are becoming more common in the standard households. They range from lights to refrigerators and their functionality and applications continues to grow with consumer demand. This increase in networked, complex devices has also brought an increase in vulnerabilities in the average consumer's home. There now exists an Internet of Things (IoT) ecosystem that creates new attack vectors for adversaries to spread malware, build botnets, and participate in other malicious activities. We will overview some of these new attack vectors as well as go over a framework that would allow an adversary to target a user's home network and …

Classification Of Eeg Signals Of User States In Gaming Using Machine Learning, Chandana Mallapragada

Masters Theses

"In this research, brain activity of user states was analyzed using machine learning algorithms. When a user interacts with a computer-based system including playing computer games like Tetris, he or she may experience user states such as boredom, flow, and anxiety. The purpose of this research is to apply machine learning models to Electroencephalogram (EEG) signals of three user states -- boredom, flow and anxiety -- to identify and classify the EEG correlates for these user states. We focus on three research questions: (i) How well do machine learning models like support vector machine, random forests, multinomial logistic regression, and …

Conical Folds -- An Artifact Of Using Simple Geometric Shapes To Describe A Complex Geologic Structure, Avery Joseph Welker

Masters Theses

"Accurate representation of the 3D shapes of natural folds is essential to characterization of the dynamic models for fold formation. Geometrical analysis of folds commonly relies upon analyzing patterns defined by the variation in the orientation of poles to planar surfaces deformed by a shortening event when plotted using graphical calculators (e.g., stereogram, polar tangent diagrams) to interpret the shape of folds. Stereograms for which orientation data define small circles are classified as non-cylindrical regular folds and are interpreted as "conical folds," where the shape of the fold is represented by a cone that terminates at a point. Utilizing similar …

Comparative Toxicology Of Nio And Ni(Oh)₂ Nanoparticles, Melissa Hope Cambre

Masters Theses

“Understanding the potential toxicity of nanoparticles (NPs) is important to ensure that these new products do not impose harmful effects to human and environmental health. Paper I is a literature review in which we discuss characteristics of nanomaterials, with an emphasis on transition metal oxide nanoparticles that influence cytotoxicity. Identification of those properties may lead to the design of more efficient and safer nanosized products for various industrial purposes and provide guidance for assessment of human and environmental health risk. We then investigate biochemical and molecular mechanisms of cytotoxicity that include oxidative stress-induced cellular events and alteration of the pathways …

Development Of Hollow Coaxial Cable Fabry Perot Resonator For High Temperature Sensing Applications, Mohammed Farhan Ahmed

Masters Theses

"The thesis is comprised of two papers, the first paper presents the novel High-Quality Factor Coaxial Cable Fabry-Perot Resonator for sensing applications. The sensor is fabricated by creating two highly reflective mirrors in a coaxial cable. The temperature response of the sensor was tested, by monitoring the frequency shift of the reflection spectra as the temperature increased linearly from 35 °C to 80 °C in steps of 5 °C. The sensor exhibited high temperature sensitivity and good measurement resolution.

A high Q factor of 133 was recorded. The second paper in the thesis presents a low cost, robust, homemade hollow …

Why A Negative Body Image? A Study On Gender, Social Media, And Mass Media, Taryn Bland Teeters

Masters Theses

This study was designed to identify the contributors to body image (BI) dissatisfaction. The factors affecting the adult body image and the extent of their consequences were examined. This study attempted to determine the extent to which these individual's peers, the mass media, and social media affect their BI, body shaming, and the individual's shame of others.

An anonymous online questionnaire was utilized and sent to participants by snowballing through the use of Facebook and email. Participants were asked to identify their age, gender, pleasing and displeasing body parts, their use of social media, and an overall rating of their …

The Role Of Contact And Empathy In Stigma Toward Individuals With Mental Illness Among Mental Health And Non-Mental Health Professionals, Quincy A. Knolhoff

Masters Theses

This study was designed to help identify the factors that predict people's stigmatized attitudes toward individuals with mental illness. Corrigan (2002) suggested that stigmatized beliefs about individuals with mental illness may be detrimental to the potential recovery of these individuals, their self-esteem, empowerment, and their integration into society. One factor that has been found to reduce this stigma is personal contact with mentally ill individuals (Corrigan et al., 2002). Additionally, research has shown that empathy and principled moral reasoning are negatively correlated with prejudice, or stigma (McFarland, 2010). The current study examined level of contact, employment in a mental health …

Student And Instructor Attitudes Toward 21st Century Writing Technologies In The Rural Secondary English Classroom, Casey Crowhurst

Masters Theses

This thesis focuses on how students and teachers feel about the current use of technologies like Chromebooks and laptops in the rural secondary English classroom. Chapter one describes my personal journey as a student and educator using various technologies in the classroom, and how I came upon the idea for this study while observing one of the first high schools to implement full 1:1 Chromebook technology in the United States. Then, I discuss my review of the current literature on the subject, and find that there is a lack of knowledge about the emergence of these types of technologies, and …

Influences On International Students' Selection Of A Regional U.S. Institution: A Descriptive Study, Yazmin Rodriguez

Masters Theses

This study examined the factors influencing international students' election to study in the United States in general and at a regional four-year institution, specifically. Furthermore, it was designed to gather descriptive information about the barriers and challenges they face. A triangulation mixed methods approach was utilized based on a previously described push-pull model. The findings indicated that Availability of scholarships or work, cost and fees, and Visa processing and visa cost are the most difficult factors that international students face when making the decision to study in the U.S. This corresponded well with the qualitative responses from the …

Students' Perceptions Of Safety On A Campus In Relation To Firearms, Porfirio Gallegos Jr.

Masters Theses

This study will utilize a qualitative approach to better understand students' perceptions of safety on-campus in relation to firearms. Results found that participants felt safe on-campus due to its rural setting. Determination of geographical upbringing was noted as influential overall in perceptions of firearms. Participants were more confident with faculty having concealed firearms than students. Results also indicated that students have a lack of knowledge when it came to state legislation, their university's policies, and the protocol in place at their university in response to a mass shooting. Students reflected Perry's (2010) multiplicity stage of development appropriate for this age …

Branding & Style Guides: Editing For Usability (A Project For Lake Land College), Baylor D. Gardner

Masters Theses

No abstract provided.

Promoting A Galaxy Far, Far Away: Changes In Promotional Strategies Seen In Star Wars Marketing Campaigns, Michael Fenton

Masters Theses

This piece examines promotional material from the Star Wars campaigns for The Phantom Menace in 1999 and The Force Awakens in 2015 to find differences in promotional strategies with regards to globalization, fandom and fan perception and the use of online spaces. Trailers, tie-in product materials and websites are given visual and textual analysis to find how the films have evolved to accommodate a larger, more culturally diverse audience. In doing so this piece seeks to understand how the changing consumer landscape is impacting the way product are advertised, and how prospective advertisers can maximize their audience through adjusting their …

Ethnic Identity Development Of 1.5 Generation Filipino American Immigrants: A Qualitative Study, Catherine Welsh

Masters Theses

This qualitative study examines ethnic identity development of 1.5 generation Filipino American immigrants in U.S. The survey methods used in the study were a demographic questionnaire, and semi-structured interview. Two Filipino students, one from the Southwest and the other from the Midwest regions of the U.S. participated in the study. Two research questions guided this study; what factors influence the ethnic identity development of the 1.5 generation Filipino American immigrants, and what strategies educators can use to facilitate 1.5 generation Filipino American immigrant student success. The results of the study revealed six themes. Three themes emerged from research question one …

War Spin: How U.S. Politicians, The President And The Media Frame Foreign Intervention, Samantha White

Masters Theses

In this research, I seek to explain how three different foreign policy actors, the President, key Senators, and the media frame intervention policy when determining if intervention is used for human rights versus U.S. interests. I will be looking at four different areas of turmoil (Bosnia (1992-1995), Rwanda (1994), Syria (2011-present) and Iraq (2003-2011)) to see if the Presidents, Senators, and the media framed their intervention around human rights atrocities being committed, or if they framed it around a national security dilemma.

A Photo Illicit Study Of Black Women's Sense Of Belonging At A Predominately White Institution, Kayla Alexandria Slusher

Masters Theses

This qualitative study sought to examine how Black women define and create their sense of belonging while attending a predominately White institution using a photovoice approach. The women took photographs of spaces that they frequently occupy and then engaged in a face-to-face interview to discuss the photographs. The researcher also investigated four Black women, ranging from junior to graduate level, to identify how they developed a sense of belonging at the research site institution. Results of the study showed that a feeling of comfort was most important when identifying belongingness in a space. The participants were able to create a …

Women Autonomy In Household Decisionmaking In Nigeria: Analysis Of 2013 Demographic And Health Survey Data, Temiyemi Akinsuyi

Masters Theses

Wealth generated in a household unit is very instrumental to the economy at large through involvement in economic activities. A modest step to improving women's voices and participation in the society is to allow them a full range of choices. Consequences of limiting the rights of women is detrimental to households, communities and the economy at large. The specific objective of this study is to examine the association between women's autonomy and household decision making. I do this by analyzing the data from the 2013 Nigeria Demographic and Health Survey. The methodology employed in investigating this relationship is the Ordered …

Introducing The Hero Of Stasis: An Examination Of Heroism In David Foster Wallace's Infinite Jest And The Pale King, Gregory Robert Peterson

Masters Theses

No abstract provided.