Digital Commons Network^™

Integrated Cast Noise Suppressor On Compressor Housing With Ported Shroud

Defensive Publications Series

Ported Shroud for a compressor housing allows air from downstream of compressor wheel inducer to recirculate back to upstream in order to increase flow stability and avoid surge. However, this results in an increase in noise produced by the compressor. Noise suppressors that are typically added at the inlet to address this problem make inlet assembly complex and increase the cost. The proposed solution addresses this issue with a novel design of a ported shroud in which noise suppressor is integrated into the compressor inlet and cast as a single component.

A Qualitative Evaluation Of Exercise Habits And Stress Management Strategies Among Exercise Physiology Freshmen, Lori A. Sherlock, E J. Ryan, Miriam E. Leary

Educational Practices in Kinesiology

Transitional phases of life (i.e., the passage from high school to college) can promote heightened stress levels resulting in physical and mental challenges. College students are at an elevated risk for common mental health disorders with 20-45% of all college students being impacted within a given year. This may be, in part, due to their exposure to a multitude of new stressors related to academics, social challenges, personal concerns, and economic issues. Therefore, the purpose of this qualitative study was to examine exercise habits and stress management strategies among incoming freshmen in an exercise physiology program. The overall goal of …

Editorial: Centering Humanism In Stem Education, Desirée Forsythe, Sheila S. Jaswal, Bryan Dewsbury, Susannah Mcgowan

Biology, Chemistry, and Environmental Sciences Faculty Books and Book Chapters

"To understand why this Research Topic exists, it is important to recall the original goal from our call for proposals: to reorient STEM researchers and practitioners to reconsider the actual purpose of the practice of teaching and learning. Bryan Dewsbury often invokes us in his writing and talks to understand our why. As educators, we wish to provide insights, practices, and proposed theories to reflect on our WHY in STEM education—from one instructor’s empathetic approach to understanding the undergraduate student experience in gateway courses to the cultural initiation ceremonies at the disciplinary level. These components of humanism and the lens …

Zoar Greer Church History, Zoar United Methodist Church, Greer

Methodist Local Church Records

No abstract provided.

Uc Agenda 2024-09-11, Northern Illinois University

University Council Archives

No abstract provided.

Spartan Daily, September 11, 2024, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2024

Volume 163, Issue 8

Brain-Wide Projections Of Mouse Dopaminergic Zona Incerta Neurons, Bono, Kenichiro Negishi, Yasmina Dumiaty, Monica Ponce, Titilayo Akinbode, Kayla Baker, C. Duncan Spencer, Elizabeth Mejia, Marina Guirguis, Alex Herbert, Arshad Khan, Melissa Chee

Departmental Papers (Biology)

No abstract provided.

Evaluation Of Satellite-Based Remote Sensing Methods For Monitoring Of Winter-Flooding Of Agricultural Fields For Migratory Birds, Thomas Patrick Dill

Student Theses and Dissertations

Agricultural land conversion in Arkansas has caused the loss of 72% of wetland habitat, reducing wintering ground for migratory birds. Winter-flooded agriculture fields resemble seasonal wetlands. Federal agencies and private organizations have recognized the importance of this and have invested millions of dollars in subsidies. While remote sensing has been used in wildlife management, there is currently no method to remotely track adoption or monitor fields. To create this ability, we examined four spectral indices: normalized difference vegetation index (NDVI), normalized difference water index (NDWI), and two different versions of the modified normalized difference water index (MNDWI). We also compared …

Implementing Reactivity In Molecular Dynamics Simulations With Harmonic Force Fields, Jordan J. Winetrout, Krishan Kanhaiya, Josh Kemppainen, Pieter J. In ‘T Veld, Geeta Sachdeva, Ravindra Pandey, Behzad Damirchi, Adri Van Duin, Gregory Odegard, Hendrik Heinz

Michigan Tech Publications

The simulation of chemical reactions and mechanical properties including failure from atoms to the micrometer scale remains a longstanding challenge in chemistry and materials science. Bottlenecks include computational feasibility, reliability, and cost. We introduce a method for reactive molecular dynamics simulations using a clean replacement of non-reactive classical harmonic bond potentials with reactive, energy-conserving Morse potentials, called the Reactive INTERFACE Force Field (IFF-R). IFF-R is compatible with force fields for organic and inorganic compounds such as IFF, CHARMM, PCFF, OPLS-AA, and AMBER. Bond dissociation is enabled by three interpretable Morse parameters per bond type and zero energy upon disconnect. Use …

Understanding Teacher Perceptions Of Intentionally Nurturing Students' Social And Emotional Competencies In The General Education Classroom, Chelsea Austin Clark

Student Theses and Dissertations

This dissertation explores the perceptions and understandings of K-6 general education teachers regarding their role in intentionally developing students’ emotional competencies. This research builds upon that which establishes the vitality of developed emotional competencies by including the perceptions of teachers who have been tasked with working directly with students’ social-emotional development. The goal of the study was to offer an approach to understanding teacher knowledge and preparedness regarding social-emotional learning in the general education classroom to provide a clear understanding of how teachers’ classroom experiences have shaped their perceptions of intentionally nurturing students’ social-emotional development. The guiding research questions of …

Effect Of Social Impact Project On Student Motivation, Engagement, And Achievement, Jayna Lise Moffit

Student Theses and Dissertations

The study’s purpose is to determine how student voice, empowerment, and empathy influence student motivation to affect student leadership, impactor identity, and academic achievement, students long-term, and the school culture at large. The self-determination theory is the study’s conceptual framework, which assumes individuals are behaviorally driven by the need to grow and gain fulfillment using the internal universal needs of competency, autonomy, and relatedness. Based upon a case study design with a reflexive latent thematic analysis, the researcher collected qualitative data using snowball sampling from students, teachers, and school leaders from a local junior high who each participated in a …

Exploring The Recruitment And Retention Experiences Of Black Male K-12 Teachers In California’S Central Valley And Their Perceived Impact On Students, Leonard Jones

Student Theses and Dissertations

This study delves into the recruitment and retention challenges faced by Black male K-12 teachers in California's Central Valley, shedding light on their perceived impact on students. The underrepresentation of Black male teachers, comprising only two percent of the national teacher workforce and less than one percent in California, underscores the urgency of examining their experiences regarding recruitment, retention, and influence on students. Employing Critical Race Theory as a conceptual framework, the study aims to amplify the self-reported lived experiences of Black male K-12 teachers through the lens of gender and culture, specifically within the Central Valley region. Employing a …

Developing Decision Support Tools To Optimize Crop Production Using Uav-Based Multispectral Imagery, Fared Farag

Student Theses and Dissertations

Multispectral imagery collected through unmanned aerial vehicles (UAVs) holds promise for optimizing crop production to meet the rising market demands. This study aimed to enhance the main two facets behind the UAV data pipeline: data collection and data analysis. Chapter II addresses data collection challenges by presenting a software tool designed to assist UAV operators in validating and identifying potential errors in the collected images. Through beta testing, the software effectively reduced operational costs and laid a solid foundation for subsequent data analysis. Chapter III delves into the data analysis facet to develop advanced modeling approaches for accurate and robust …

Teachers’ And School Leaders’ Perceptions Of A Community School Model’S Impact On Student Achievement, Kelsey Brabo

Student Theses and Dissertations

Community schools are a national initiative gaining traction due to the recent identification of the community school model as an evidence-based approach to education that satisfies requirements set forth by the Every Student Succeeds Act. The community school model centers around four pillars: integrated student support, extended and enriched learning opportunities, active family and community engagement, and shared leadership. With rapidly rising poverty rates and the expansion of community schools across the country, there is a need to ensure the efficiency and effective implementation of the community school model. The problem addressed in this qualitative case study is that the …

Teacher Perceptions Of Reading And Mathematics Achievement Gaps Among Elementary Students Resulting From The Covid-19 Pandemic, Kayla Lynn Caprio

Student Theses and Dissertations

The purpose of this descriptive qualitative case study was to discover Second through Fifth Grade rural North Texas teacher perceptions focusing on reading and mathematics student achievement gaps resulting from the COVID-19 pandemic. This study explores how the COVID-19 pandemic shutdown affected students not only academically but also socially as well. Through a qualitative case study design, this study collected qualitative data by interviewing seven-Second through Fifth Grade teachers through semi-structured interviews, a focus group, and MAP data by analyzing MAP data collected in the beginning and middle of the year from the 2019-2023 school years. The social learning theory …

Factors Influencing The Selection And Change Of Major For Students At Historically Black Colleges And Universities, David Allen

Student Theses and Dissertations

This qualitative exploratory study investigated the selection and change of majors for nine HBCU (Historically Black Colleges and Universities) students. The study included individual structured interviews that provided data that answered the following research questions: 1) what factors influenced the initial selection of major, and 2) what factors influenced the change of major? Bronfenbrenner's ecological theory (BET), utilizing each of the five layers, was used as the theoretical framework to understand how the students’ backgrounds or their ecology influenced major choices. Participants were asked at the end of the interviews how their change of major impacted their graduation timing. Results …

Rehabilitation Of Urban Heritage To Revive Heritage Villages In Ad Dair Governorate In Jazan Province Of The Kingdom Of Saudi Arabia (Dra'al-Khatm Heritage Village: Case Study), Meaeel Raee Alraithi

Student Theses and Dissertations

This dissertation investigates the rehabilitation of urban heritage in Dra'Al-Khatm village within Ad Dair Governorate, Jazan Province, Saudi Arabia, emphasizing the revival of heritage villages as essential cultural, social, and economic resources. Urban heritage, defined by its tangible elements and historical depth, plays a pivotal role in representing civilizations and defining cultural identity. Despite its value, urban heritage in Saudi Arabia faces threats from modernization and neglect, leading to the deterioration of historical sites and villages. This study focuses on Dra'Al-Khatm village, a site of significant historical and architectural value, yet currently in a state of deterioration. The research adopts …

Mechanical Behavior Of Nixcr Alloys With Ti3sic2 Nanoparticle Inclusions Using Molecular Dynamics, Brendan Martin Crutchfield

Student Theses and Dissertations

Many materials used for solid lubrication are expensive and difficult to replace after abrasive wear, thus new compounds have to be considered and explored for their feasibility in solid lubrication. Nickel-chromium alloys are a potential replacement due to its high chemical and thermal stability, and Ti3SiC2 nanoparticle inclusions are considered to improve the wear rate of these materials. In this study, molecular dynamics (MD) simulations are utilized to assess the mechanical behavior of NixCr (x = 1, 2, 3, 4) alloys with and without Ti3SiC2 nanoparticle inclusions of radii 13, 20, and 27 Å. MD uniaxial tension tests are conducted …

Advanced Transistor-Based Dynamic Equivalent Circuit Modeling Of Mesostructured-Based Solar Cells, Eman Farouk Sawires, Sameh O. Abdellatif

Electrical Engineering

This study introduces a pioneering transistor-based equivalent circuit model explicitly tailored for mesostructured-based solar cells, primarily focusing on dye-sensitized solar cells (DSSCs) and perovskite solar cells (PSCs). By incorporating the experimental data spanning various inorganic, organic, and hybrid solar cell technologies across different optical injection levels, the model aims to provide a comprehensive understanding of the electrical behavior of these advanced photovoltaic devices. In addition to the circuit schematic, a Verilog-A script was created to elucidate the behavior of the cells, facilitating the utilization of such a block by the research community in developing interfacing circuits and implementing dc–dc converters …

Development Of Bio-Based Organogels For The Replacement Of Silicone Elastomers In Cosmetic & Personal Care Applications, Courtney A. Lemasney

Theses and Dissertations

Silicone elastomers (SE) are a major component in many cosmetic and personal care products, providing excellent spreading properties, leaving a dry, silky feel on the skin. Unfortunately, the manufacturing of silicone is a high energy consuming process, and these products are not biodegradable. Capryloyl/glycerin/sebacic acid (CGS) copolymers are an economical, nontoxic platform for synthesizing bio-based materials with tailored properties. These polyester networks are formed through esterification with water as its only side product. By altering feed ratios and reaction conditions, final products can vary from branched fluids to highly crosslinked elastomers. This thesis investigated controlling the crosslink density of the …

Effective Integration Of Waste Plastics In Hot Mix Asphalt Mixtures: Towards Sustainable Infrastructure, Venkatsushanth Revelli

Theses and Dissertations

The study investigated the potential of waste plastics such as low density polyethylene(LDPE), high density polyethylene(HDPE), polyethylene terephthalate(PET) and polystyrene (PS) for designing superior performing asphalt mixtures. Both wet mixing and dry mixing methods were adopted for designing plastic modified asphalt mixtures. Initially LDPE and HDPE were selected for developing plastic modified binders, based on melting characterization, determined from differential scanning calorimeter(DSC). In wet mixing process, the influence of dosage, size of plastic, blending duration and interaction between plastic and asphalt were assessed. Plastics were found to exhibit phase separation with asphalt, while finer particles take only longer to segregate …

¡Juntos Al Éxito! #27 - Path To R1, The University Of Texas Rio Grande Valley. College Of Sciences, Teresa Patricia Feria-Arroyo, Can Saygin, Thomas B. Spencer

¡Juntos al Éxito! - Empowering Excellence Program Recordings

In this session speakers discussed R1 status and Research Operations.

September 11, 2024 Faculty Senate Minutes, University Of South Carolina

Faculty Senate

No abstract provided.

Interoperability In Deep Learning: A User Survey And Failure Analysis Of Onnx Model Converters, Purvish Jajal, Wenxin Jiang, Arav Tewari, Erik Kocinare, Joseph Woo, Anusha Sarraf, Yung-Hsiang Lu, George Thiruvathukal, James C. Davis

Computer Science: Faculty Publications and Other Works

Software engineers develop, fine-tune, and deploy deep learning (DL) models using a variety of development frameworks and runtime environments. DL model converters move models between frameworks and to runtime environments. Conversion errors compromise model quality and disrupt deployment. However, the failure characteristics of DL model converters are unknown, adding risk when using DL interoperability technologies. This paper analyzes failures in DL model converters. We survey software engineers about DL interoperability tools, use cases, and pain points (N=92). Then, we characterize failures in model converters associated with the main interoperability tool, ONNX (N=200 issues in PyTorch and TensorFlow). Finally, we formulate …

The Bg News September 11, 2024, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. September 11, 2024. Volume 104-Issue 03.

Midweek Memo, Georgia Southern University

Midweek Memo

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Why Is Workforce Development Such A Big Deal Now?, Cheryl A. Burkhart-Kriesel

Cornhusker Economics

For those linked to agriculture or agri-business, you are not only dealing with the national constraints of the current workforce, but if you are involved specifically in production agriculture, you are also hit by the changing size and scope of on-farm workforce trends. These are just a few of the reasons why workforce development in general, and especially in the agricultural sector, is a big deal now.

A Flexible Approach To Reach An Equitable Solution: The Application Of Principles To The Delimitation Of The Continental Shelf, Ángeles Jiménez García-Carriazo

International Law Studies

The delimitation of the continental shelf is an old exercise shaped by case law and State practice. Although every delimitation is unique, judicial practice has provided guidance about the principles to be applied in pursuit of an equitable solution. This article examines the guiding doctrines, the contemporary principles, and the emerging principles and rules in the delimitation of the continental shelf. It first analyzes the role of principles in continental shelf delimitation within two hundred nautical miles. Subsequently, it examines whether the same principles apply to the delimitation of the extended continental shelf, considering that the entitlement within two hundred …

Research On Fruit Appearance Detection And Classification Method Based On Yolov8, Tang Xingping, Wang Baijuan, Yang Hongxin, Yang Zhengming, Li Rujia, Wu Wendou

Food and Machinery

[Objective] To establish a nondestructive detection method for fruit appearance. [Methods] Nectarines were used as the research subject. The IQQU3 smart phone camera was used to capture the picture data, which was then preprocessed. The image annotation program Labelimg was used to label the data. Panning, left-right flipping, and mirror flipping were used to enlarge the data. Using an ratio of 8∶2, the enlarged photos were split into training and test sets. Lastly, the data was trained for 150 epochs using five YOLOv8 models （n, s, m, l, x）. The training results of the five models were compared and analyzed …

Could A Carbon Tax Improve Utah's Air Quality And Mitigate Climate Change?, Rose Cameron, Kendall Becker, Alexi Elizabeth Lamm, Scott Hotaling

All Current Publications

Urban areas in Utah have suffered from poor air quality since Euro-American settlement in 1847. Because today’s harmful air pollutants and carbon dioxide—the most significant driver of contemporary climate change—are often emitted together, a carbon tax could improve air quality while also mitigating climate change. Here, we explore how Sweden has successfully implemented a carbon tax and consider the viability of a similar approach for Utah. While a carbon tax would pressure Utah’s transportation and energy sectors to reduce reliance on fossil fuels, revenue from the tax could finance renewable energy infrastructure to support companies transitioning away from fossil fuels …