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Investigations Of The Low Temperature Combustion Regions And Emissions Characteristics Of Aerospace F24 In A Constant Volume Combustion Chamber And A Common Rail Direct Injection Ci Engine, Richard C. Smith Iii

College of Graduate Studies: Theses & Dissertations

A study was conducted to investigate the low temperature combustion (LTC) regions of aerospace F24 and ULSD in the static setting of a CVCC and the dynamic setting of a CRDI research engine. This research is conducted to reduce in-cylinder emissions by understanding and implementing a technique to achieve an extended LTC. Emissions data for this study were collected during the operation of the CRDI research engine with a MKS 2030 FTIR and an AVL Microsoot 483. The parameters researched within the static setting of the CVCC included the determinations of the cool flames and NTC regions within the LTHR …

The Application Of Deep Learning And Cloud Technologies To Data Science, Ian A. Trawinski

College of Graduate Studies: Theses & Dissertations

Machine Learning and Cloud Computing have become a staple to businesses and educational institutions over the recent years. The two forefronts of big data solutions have garnered technology giants to race for the superior implementation of both Machine Learning and Cloud Computing. The objective of this thesis is to test and utilize AWS SageMaker in three different applications: time-series forecasting with sentiment analysis, automated Machine Learning (AutoML), and finally anomaly detection. The first study covered is a sentiment-based LSTM for stock price prediction. The LSTM was created with two methods, the first being SQL Server Data Tools, and the second …

Analysis Of Spatial Discrepancies Between 76-Foot Close Range Photogrammetric And Terrestrial-Lidar Models, Abdoul K. Ouangre

College of Graduate Studies: Theses & Dissertations

This study presents an analysis of the accuracy of a 3D model generated by two different methods. In the first method, the 3D model is generated via Laser Scanning. In the second method, the 3D model is generated via Close-range Photogrammetry from a drone flying at 76 feet above the ground. Photogrammetry is a photo-based technique that uses images to generate 3D models of objects where distances could be extracted from. Close-range photogrammetry is the approach of generating a 3D model from a camera placed anywhere between 1 foot and 1000 feet relative to the object. Terrestrial LiDAR is the …

American Performance: Artistic Experience And The American Dream, Savannah M. Barrow

College of Graduate Studies: Theses & Dissertations

The American Dream was first epitomized by Benjamin Franklin in his Autobiography (1791), in which he instructs his fellow citizens on how to procure the American promises of social mobility and economic prosperity. However, the moral and social performances reinforced by Franklin’s recipe-for-success promote an ideological system that prevents marginalized communities such as women, immigrants, and people of color, from procuring the Dream’s most foundational features. Inequitable access to the Dream is a theme revisited throughout American literature, wherein disenfranchised characters consume the aspirational narrative of American social mobility through art, media, and propaganda. This essay tracks the representation of …

Perceived Student Gains Associated With Peer Tutor And Supplemental Instruction Leader Experiences, Rebecca Cofer

College of Graduate Studies: Theses & Dissertations

This study explored the peer tutor and Supplemental Instruction (SI) Leader experiences in the campus learning center, as seen through the perceived gains in three subcategories: 1) academic performance and learning, 2) non-academic skillsets, and 3) self-confidence and fulfillment. The peer tutor and SI Leaders surveyed in this study had experience in either one or both of these peer educator roles and came from institutions across the nation. In this quantitative study, participants completed a three-part, researcher-created survey that allowed for Likert-scaled responses along with open-ended responses and concluded with demographic items. The major findings from this study showed a …

The Perspective Of Riverkeepers And Environmental Groups On Poor Water Quality In Georgia, Jacob A. Crawford

College of Graduate Studies: Theses & Dissertations

Riverkeepers and environmental groups currently face the complex task of defending watersheds. In Georgia, these efforts are complicated by the vast geographical and racial diversity within the state. This study examined the riverkeepers and environmental groups need to improve advocacy abilities to defend communities they serve from poor water quality, what communities in Georgia are being impacted by poor water quality, what disconnects exist between riverkeepers, environmental groups, and governmental agencies, and how COVID-19 has challenged the riverkeepers and environmental groups. Using qualitative interviews with eleven riverkeepers and environmentalists, the findings suggest that collaboration with riverkeepers, enforcement of current policy, …

Analysis Of Bio-Alcohols With Mie-Scattering And Ltc For Lowered Emissions In Pcci, Cesar E. Carapia

College of Graduate Studies: Theses & Dissertations

An investigation was conducted on the optimal engine parameters for facilitating lower NOX and soot emissions of PCCI combustion with either ethanol or n-butanol. The PFI fuels selected were tested at loads of 3, 4, and 5 Bar IMEP for a total of 28 total combustion tests with variations made to the EGR% and boost pressure for each test in order to find the optimal emissions strategy. A Mie-scattering spray fuel analysis was also conducted on the three fuels to gain insight on their influence on combustion/emissions characteristics. It was found that ethanol had a greater average Sauter Mean Diameter …

Design And Implementation Of An Automatic Word Generator For Word Matching Interactives, Evan Miles Gertis

College of Graduate Studies: Theses & Dissertations

An Automatic Word Match Generator is a software tool that can be used to generate word-matching interactives automatically. The purpose of a word-matching interactive is to provide students with the mechanism to learn new vocabulary and improve their reading comprehension skills. This thesis will present the design and implementation of an Automatic Word Match Generator, as well as the research and algorithms used in the program.

Comparative Analysis Of Winglet Efficiency On Supercritical Versus Traditionally Cambered Airfoils, Evan Cathers

College of Graduate Studies: Theses & Dissertations

This study serves to define the performance of several industry-recognized and exploratory wing tip devices on aircraft wings utilizing contemporary supercritical airfoil geometry. For comparison, the same examination is performed on a wing comprised of traditionally cambered airfoils, the platform upon which winglets were initially developed. The supercritical wing design is based on that of the Airbus A320, while the conventional airfoil is based upon the Boeing 737-800 platform. Tip devices selected for analysis include blended, raked, split scimitar, fence, and spiroid winglets, as well as tip sails, characterized by the spreading of a bird’s primary flight feathers. Methodology for …

The Influence Of Faculty Peer Network Communication In The Diffusion Of A Centralized Cure, Nicole L. Scheuermann

College of Graduate Studies: Theses & Dissertations

Course-based undergraduate research experiences (CUREs) provide students the benefits of undergraduate research participation by incorporating authentic scientific research into laboratory courses. CUREs are a relatively young pedagogy and are therefore innovative. Roger’s (2003) diffusion of innovations (DOI) framework posits that the diffusion of innovations, such as CUREs, is a highly social process. Most existing CURE research has focused on the impacts to students and the critical elements of CURE design. Investigation into instructor peer network communication is largely absent from the existing CURE literature. This study investigates the structure and function of a CURE community – the Malate Dehydrogenase CURE …

The Synthesis And Biocatalytic Reduction Of Beta-Keto Alkynes, Rhema M. Francis

College of Graduate Studies: Theses & Dissertations

The preparation of enantiopure homopropargyl alcohols (but-3-yn-ols) is of high importance to the scientific community. They are employed as valuable pharmaceutical intermediates and are opportune to generate antiviral nucleoside analogues. Chiral inducement of these molecules thus far has been poor (low ee) and has constituted a key challenge for asymmetric synthesis in the last few decades. Enzyme-catalyzed enantioselective reductions of ketones have become popular to produce thus-prepared synthons on an industrial scale. Among them, biocatalysts (dehydrogenases, reductases) emerge as a biodegradable option for chemical transformations, in comparison to chiral catalysts that employ highly toxic metals. This research investigates the catalytic …

An Innovative Elastohydrodynamic Seal Concept For Gases, Matthew J. Demond

College of Graduate Studies: Theses & Dissertations

Supercritical CO₂ (sCO₂) power cycles are next generation power technologies offering improved efficiency, lower customer costs, and less water usage. They hold significant potential in many different industries such as nuclear power production, ship propulsion, geothermal power, solar power, and fossil fuel power plants. One of the largest hurdles preventing this milestone is the lack of suitable shaft seals for sCO₂ operating conditions. This component issue needs to be addressed for the next generation nuclear turbine and compressor development to progress. In this study, a novel Elastohydrodynamic (EHD) seal is proposed. This proposed design is capable …

Leadership Self-Efficacy Of Students Participating In On-Campus Leadership Programming, Benjamin S. Phillips

College of Graduate Studies: Theses & Dissertations

Colleges and universities across the United States are facing continued pressure to meet enrollment and retention goals, as budgets continue to become more important, specifically, being performance-based. On-campus involvement has shown to have a positive influence on a student’s decision to stay at their particular institution and thus being retained. One area of on-campus involvement that has been identified is undergraduate leadership development programs. Students participating in an undergraduate leadership development program, such as assuming an on-campus leadership position often results in higher rates of student success. The purpose of this quantitative, cross-sectional study utilizing a correlational design via survey …

Relationship Between Participation In A Dual Enrollment Program, Students’ Race And Socioeconomic Status And Their Retention And Graduation, Nicholas Urquhart

College of Graduate Studies: Theses & Dissertations

As of 2019, all 50 states have an official dual enrollment policy or program that allows high school students to enroll in college to earn both high school and college credits. Dual enrollment programs have been around since 1990, and much of the research has shown a positive relationship between dual enrollment participation, college retention, and graduating; however, research is limited on college retention beyond the first year and graduation. Access to dual enrollment programs is limited for minoritized and low-income students. This study utilized archival data from the University System of Georgia in an ex post facto research design …

Proof-Of-Concept: Safety Hazard Identification And Impact Minimization Using 3d Bim And Vr Devices Through The Case-Studies, Sudeep Pangeni

College of Graduate Studies: Theses & Dissertations

Construction hazard is a global issue. Despite numerous research studies, safety guidelines and procedures, fatalities and severe injuries still occur on construction job sites. This research has been performed to identify the research gaps and potentially improve worker behavior along the most hazardous tasks during construction execution using 3D Building Information Modeling (BIM) and Virtual Reality (VR) devices. A safety hazards-related questionnaire for civil engineering and construction students, superintendents, safety, and project managers across six different states including the state of Georgia was deployed. The questionnaire was distributed via an online platform to identify and approach the hazards which occur …

Structural And Functional Characterization Of Two Poly(Aspartic Acid) Hydrolases, Amanda Jansch

College of Graduate Studies: Theses & Dissertations

Due to the accumulation of polymers in the environment, biodegradable alternatives should be used in place of commonly used polymers like poly(carboxylates). Poly(carboxylates) are water-soluble polymers (WSPs) that make up a variety of consumer products, such as detergents, descaling agents, and superabsorbent materials commonly found in diapers and feminine hygiene products. While the visible accumulation of these products may not be obvious, it is necessary to reduce the amount entering the environment. Poly(aspartic acid) (PAA) is an alternative WSP that is biodegradable through the action of three different enzymes, PahZ1_KT-1, PahZ2_KT-1, and PahZ1_KP-2. Originally …

Peer-Coaching Based Professional Development: A Sample Of A School Of Foreign Languages, Sinem Arslan Dönmez, Ahmet Şahin Assoc. Prof.

Georgia Educational Researcher

The purpose of this study is to investigate the views of lecturers about the effectiveness of the implementation of the peer-coaching practice conducted at the school of foreign languages of a foundation university. The lecturers who took part in the peer coaching practice in the academic year 2019-2020 acted as the participants in this case study. The qualitative data was collected via interviews and document analysis. Content analysis and descriptive analysis methods were used in the process of data analysis. The findings from the analysis showed that peer-coaching practice consisted of lesson observations, pre and post-observation meetings, and reflection stages. …

Influence Of Curing On The Electrical Properties Of Concrete, Ehsanul Kabir

Allen E. Paulson College of Engineering & Computing Student Research Symposium (2022)

No abstract provided.

Drone Control Using Electroencephalogram Signals, Aloaye E. Itsueli, Jeremie O. K. Kamba, Jonathan D. N. Kamba

Allen E. Paulson College of Engineering & Computing Student Research Symposium (2022)

In this project, we present the development of a system that can control a drone using a headset sensor that detects electroencephalographic (EEG) waves from the drone’s pilot when he/she performs facial gestures. The drone is controlled using specific facial expressions which are recorded using a commercial EEG headband, the OpenBCI EEG headband (fig. 2). The EEG headband uses electrodes to read the electric potentials from the brain. The EEG signals were recorded and analyzed using the OpenBCI GUI software. The data files recorded from the EEG headband were exported to Matlab to perform the signal conditioning, feature extraction, and …

2022 Georgia Southern University Football Roster, Georgia Southern University

Men's Football Records

• Georgia Southern University Athletics 2022 Football Roster

Factors Associated With Intention To Disclose Concussive Symptoms In Active Duty Soldiers, Carly Beck

College of Graduate Studies: Theses & Dissertations

Background: Concussion disclosure is a heavily researched topic, and while previous literature has explored predictors of concussion disclosure in numerous populations, research within the active duty Soldier population is limited. This study further explored predictors of concussion disclosure to a medical professional or leadership in the active duty Solider population through the lens of the Theory of Planned Behavior. Methods: A cross-sectional electronic survey was distributed to 181 active duty Soldiers. Descriptive statistics were used to report frequency of high intention to disclose concussive symptoms among demographics, and a multivariate regression model was used to assess significant predictors of intention …

Voices Rising: Exploring The Tensions Of Homeschooled Women Defining Themselves Within A Religious Culture, Natalie S. Immings

College of Graduate Studies: Theses & Dissertations

Homeschooling is a familiar form of education, but nuances such as purposes, curriculum and impact on students are less understood due to minimal studies and lack of participation. Existing research has focused on motivations for homeschooling; however glaring gaps exist regarding the impact on student development. This study is essential due to concerns regarding the impact on student identity as well as the recent increase in the number of homeschoolers from a pandemic and other political trends. In an effort to pull back the curtain on the dominant conservative Christian homeschool milieu this study employed a qualitative ethnographic methodology which …

Cosm Diversity And Inclusion Newsletter, Georgia Southern University

College of Science & Mathematics: News & Publications (2012-2022)

THE IMPACT OF WORKLOAD (IN)EQUITY ON PROMOTION & TENURE

Workload Equity

Inclusive Excellence 365 Calendar

D&I Campus Connections and Opportunities

Eagle Executive Magazine, Georgia Southern University

College of Business: News & Publications

• From the Desk of Dean Amason
• College News
• Department News
• Feature: Parker College Welcomes Newest Carter Chair
• Graduate Programs
• Alumni News
• Development News

Eagle Executive Magazine, Georgia Southern University

College of Business: News & Publications

• From the Desk of Dean Amason
• College News
• Department News
• Feature: Parker College Welcomes Newest Carter Chair
• Graduate Programs
• Alumni News
• Development News

Calliope, Georgia Southern University

Calliope Magazine

Volume 40 2021-2022

Undergraduate Catalog, Georgia Southern University

Undergraduate & Graduate Catalogs

No abstract provided.

Determining Cause Of Failure For Load Cells Supporting Vertical Pressure Vessels Subject To Wind Loading, Seth Nowak

College of Graduate Studies: Theses & Dissertations

Wind loads cannot be avoided during a natural disaster such as a hurricane and could affect the strength and stability of vertical pressure vessels during exposure. Vertical pressure vessels cater to large wind loads; therefore, it is imperative to study the effect of additional loading on the structures. In this study, three pressure vessels with volumes of 50 CuFt, 200 CuFt, and 1100 CuFt, supported by three equidistant load cells under their legs are individually analyzed to determine von mises stress to estimate yield failure criteria. Two load rating criteria, maximum load capacity and water-filled condition (critical condition) are utilized …

Fabrication Of Soft Gripper Via Direct Inkjet Writing Additive Manufacturing, Evan D. Johnson

College of Graduate Studies: Theses & Dissertations

Additive manufacturing (AM) has bloomed recently in the manufacturing field due to its many applications. Direct inkjet writing (DIW) is one of the main am technologies used in the production of grippers. DIW is the most popular taking advantage of materials like silicone and hydrogels. The technology of 3D printing with silicone is still in early stages ,nevertheless, the ability to print with soft materials is very alluring. The implementation of complex geometries in the silicone world would yield vast opportunities in the medical and robotics fields. Additive manufacturing allows for this to be thoroughly examined. In this research these …

2022 Spring Commencement, Georgia Southern University

Commencement Programs

No abstract provided.