Digital Commons Network^™

The Impact Of Perceived Principal Efficacy On Instructional Growth Through The Evaluation Protocol, John Richard Thompson Iii

Dissertations

The goal of this study was to investigate the impact of the perception of principal efficacy on instructional growth. The research questions examined what factors determine the perception of principal efficacy, how those perceptions impact instructional feedback during the evaluation process, and how they impact teacher growth. Data were collected in two stages. First, a survey was distributed to all K-12 teachers from a rural Southwest Missouri athletic conference. Participants completed the survey to provide qualitative information on the impacts of the perception of principal efficacy. Stage two consisted of follow-up interviews with the participants who indicated they were willing …

Process Improvement Of Cu(Ii)-Trymethylamine-Based Active Clay Measurement Test And Total Clay Measurement Test, Christopher Michael Remily

Masters Theses

Foundry work requires a mold made of a mixture of sand, “active clay” to absorb gas, and binders to combine the two and hold the molds shape. When the metal is melted to be poured into the mold, the solubility dramatically increases, causing gas to be temporarily dissolved in the metal. This gas causes small surface pits to form once the metal cools, causing part failure. This causes the need to absorb the gas. Since the clay is used in the process, there needs to be a way to determine how much remains active, which is done with a dye …

Growing Agriculture Literacy’S Presence In America’S Classrooms, Emily Stone

Journal of Food Law & Policy

“Americans, as a whole, were at least two generations removed from the farm and did not understand even the most rudimentary of processes, challenges, and risks that farmers and the agricultural industry worked with and met head-on every day.” This quote perfectly describes the mindset of agriculture stakeholders in 1981 as they began to realize the drastic steps our education system had taken away from using principles of agriculture in K-12 education. As they saw it, Americans were moving out of rural America, away from farms, and becoming less connected to the food they daily consumed. Simultaneously, the education system …

Chewing The Welfare Cud: A Digested Analysis Of A Consumer Versus Producer-Defined Standard Of Welfare Practices In Animals Raised For Human Consumption, Caitlin C. Robb

Journal of Food Law & Policy

Since the eighteenth century, animal well-being remains a concern for American citizens. Yet, underlying this concern is the thought that while humans should not be cruel to animals, animals are still private property subject to human ownership. Therefore, multi-faceted questions of what constitutes “animal welfare” find a place in modern American debate. One such question becomes: should the producer or the consumer define welfare practice standards of animals raised for human consumption?7 This note provides an answer to this question by first analyzing the robust history of animal welfare in the United States, along with the domestic and international impact …

Instrumentality: How We Develop Relationships With Objects And People, Nathaniel Bee

Undergraduate Honors Capstone Projects

There are many different types of relationships a person will have throughout their life, each being given varying levels of authenticity, weight, and care. One’s attention is primarily placed upon the meaningful relationships in one’s life, but often deeper consideration of one’s “lesser” relationships is neglected. Networking and professional relationships are often impersonal. Family members will often lie to each other in favor of avoiding conflict. The emotional labor of service workers often goes underappreciated and undercompensated. Careers in the political sphere revolve heavily around maintaining a positive public image, and there are well-observed disparities between politicians’ stated values and …

Mechanical Properties Of Natural Osmia Lignaria Silk And Recombinant Expression Of The Silk Proteins, Jackson Morley

Undergraduate Honors Capstone Projects

The use of petroleum-based plastic and the subsequent waste has led researchers to explore alternatives in the form of biopolymers. Spider silk and hagfish intermediate filaments show the potential to be advantageously utilized in textile and biomedical industries. Bee silk is a sparsely studied biopolymer that has shown potential to be added to these other impressive biopolymers. Osmia lignaria, is a solitary bee native to the western United States. Silk from these bees can be isolated while the larvae are spinning their silk. The silk from these bees has been mechanically tested for strength, stress, strain, and elasticity. Cocoon …

What Is The Potential Of Non-Battery Energy Storage To Increase Grid Resilience?, Andrew Withers

All Graduate Reports and Creative Projects, Fall 2023 to Present

This paper seeks to evaluate different technologies in energy storage to determine which ones have the most potential to benefit the energy grid. Technologies like pumped hydro, thermal, gravity, hydrogen, and compressed air storage will be evaluated based on overall costs, marginal costs, unique applications, and efficiency. This paper compares the technologies to batteries on the previous criteria. I also provide a discussion on the policy and economic barriers to the further use of non-battery technologies to support grid reliability during the transition to a cleaner grid that is more reliant on variable renewable generators.

A Phenomenological Study Of The Perceptions Of Inclusive Preschool Education Through The Lens Of Interdisciplinary Early Childhood Educators., Brooke Noon

Electronic Theses and Dissertations

Young children with special needs have been educated in early childhood settings with typically developing peers for over 40 years. Successful educational inclusion in the least restrictive environment requires appropriate aids and supports (Individuals with Disabilities Act, 2004). Although researchers have studied many aspects of special education, little investigation has been conducted on the perspectives of dual certified interdisciplinary early childhood educator’s (IECE) perceptions on full inclusion in preschool. This study was designed to examine the connection between the perceptions of IECE teacher’s experiences as a dual certified educator in preschool. In total, 10 IECE teachers were interviewed and completed …

Investigating Mems Devices In Flow Conditions Relevant To Flow-Through Systems., Mohammad Shafquatul Islam

Electronic Theses and Dissertations

Advancements in microscale actuating technologies has substantially expanded the possibilities of interacting with the surrounding environment. Microstructures that deflect in response to mechanical forces are one of the largest application areas of microelectromechanical systems (MEMS). MEMS devices, functioning as sensors, actuators, and support structures, find applications in inertial sensors, pressure sensors, chemical sensors, and robotics, among others. Driven by the critical role of catalytic membrane reactors, this dissertation aims to evaluate enzyme activity on polymeric membranes and explore how fabrication methods from the field of Electrical and Computer Engineering (ECE) can incorporate sensing and actuation into these porous surfaces. Toward …

Agency In Learning And E-Learning Through The Lens Of Disability And Inclusivity., Marta Martin

Electronic Theses and Dissertations

Through the analysis of ethnographic, qualitative data collected from students and their stakeholders at the University of Louisville, this thesis examines the experiences of students with disabilities in spaces of higher education, particularly virtual learning spaces. This research has illuminated systemic gaps in disability resources and accessibility within the landscape of higher education, restricting the agency of students with disabilities and their stakeholders.

Phosphorus Dynamics In Calcareous Soils Amended With Organic Matter, Logan Banner

All Graduate Reports and Creative Projects, Fall 2023 to Present

Phosphorus (P) is considered immobile in calcareous soils. Organic matter is known to enhance P mobility in these soils. Few studies have considered what role iron oxides might play in P sorption in calcareous soils, especially in the presence of soluble organic matter. This study investigated P sorption dynamics in sand-based, simulated soil systems in the absence or presence of 5 mM carbon (C) as humic acid (HA). Treatments included combinations of dicalcium phosphate dihydrate (DCPD), calcite, and ferrihydrite. Solutions containing 10 mg P L^-1 in a background of 0.01 M CaCl₂were equilibrated with each solid treatment …

Fair Canonical Correlation Analysis, Zhuoping Zhou, Davoud Ataee Tarzanagh, Bojian Hou, Boning Tong, Jia Xu, Yanbo Feng, Qi Long, Li Shen

Faculty, Staff and Student Publications

This paper investigates fairness and bias in Canonical Correlation Analysis (CCA), a widely used statistical technique for examining the relationship between two sets of variables. We present a framework that alleviates unfairness by minimizing the correlation disparity error associated with protected attributes. Our approach enables CCA to learn global projection matrices from all data points while ensuring that these matrices yield comparable correlation levels to group-specific projection matrices. Experimental evaluation on both synthetic and real-world datasets demonstrates the efficacy of our method in reducing correlation disparity error without compromising CCA accuracy.

Comprehensive Analysis Of The Effects Of Superplasticizer Variation On The Workability And Strength Of Ready-Mix Concrete, Tahsin Tareque, Fahmid Tousif, Mirza Addaito Billah, Abdullah Al Masum Jabir, Seyedali Mirmotalebi

Civil Engineering Faculty Publications

This experimental study aims to examine the influence of many crucial parameters on the workability and compressive strength of Ready-Mix Concrete (RMC). The study utilized two distinct varieties of superplasticizers obtained from the local market. The fine aggregates utilized in this study were sourced from Sylhet sand, whereas the coarse aggregates were comprised of boulder crushed stone chips. The experimental procedures adhered to the requirements outlined by ASTM. A comprehensive investigation was conducted on a range of concrete compositions that used diverse chemical admixtures. The slump test was performed at regular intervals of 15 minutes until the slump value reached …

Assessment Of The Mechanical And Durability Characteristics Of Bio-Mineralized Bacillus Subtilis Self-Healing Concrete Blended With Hydrated Lime And Brick Powder, Mohd Abu Bakr, Birendra Kumar Singh, Ahmed Farouk Deifalla, Shatrudhan Pandey, Ahmed Hussain, Sahir Sultan Alvi, S.M. Mozammil Hasnain

Civil Engineering Faculty Publications

Highlights

• The present paper studied the effect of biomineralization on the properties of HBr concrete.

• Strength and durability properties are improved by calcite precipitation produced by bacteria.

• CaCO3 Precipitation was confirmed in the microstructure analysis through FESEM and EDS.

Abstract

Cement is the main constituent of the concrete structure. Using rejected brick as pozzolana in replacement of cement reduced the utilization of natural resources, conserved the environment, and controlled waste disposal. Hydrated lime has been utilized as a chemical additive to improve the pozzolanic reaction of finely ground waste brick particles. This research investigates the process of biomineralization to enhance …

Les Taux De Rupture De Conduites D’Eau Principales Aux États-Unis Et Au Canada : Une Étude Complète, Steven L. Barfuss

Reports

Détérioration des infrastructures

Les municipalités et les personnes qu’elles servent dépendent des réseaux de conduites qui leur fournissent de l’eau potable de bonne qualité. Ces conduites sont souterraines, invisibles et souvent négligées.

Les résultats de l’évaluation globale de l’état des infrastructures hydrauliques ne sont pas bons. Prenons les États-Unis comme exemple :

· En 2009, l’American Society of Civil Engineers (ASCE) a publié un rapport sur les États-Unis et a attribué un D- aux infrastructures d’eau potable.

· En 2017, cette note est passée à D.

· En 2021, elle affiche une hausse à C-, ce qui est mieux, mais …

Water Main Break Rates In The Usa And Canada: A Comprehensive Study, Steven L. Barfuss

Reports

Deteriorating Infrastructure

Municipalities and the people they serve depend on pipe networks that provide safe drinking water. This piping is underground, out of sight, and often neglected.

Overall assessment of water infrastructure condition is not good. Using the US as an example:

• In 2009, the American Society of Civil Engineers (ASCE) issued a US report card and gave a D- to drinking water infrastructure.
• In 2017, the grade improved to a D.
• In 2021, the grade was raised to a C-, better but still not good.
• Utilities are currently losing 11% of their water to leakage.
• Pipe life estimates of …

Development, Implementation, And Optimization Of A Modern, Subsonic/Supersonic Panel Method, Cory D. Goates

All Graduate Theses and Dissertations, Fall 2023 to Present

In the early stages of aircraft design, engineers consider many different design concepts, examining the trade-offs between different component arrangements and sizes, thrust and power requirements, etc. Because so many different designs are considered, it is best in the early stages of design to use simulation tools that are fast; accuracy is secondary. A common simulation tool for early design and analysis is the panel method. Panel methods were first developed in the 1950s and 1960s with the advent of modern computers. Despite being reasonably accurate and very fast, their development was abandoned in the late 1980s in favor of …

Understanding The Effects Of A Mobile Flow Visualization Learning Tool On Engineering Undergraduate Interest In Fluid Mechanics, Lori M. Openshaw

All Graduate Theses and Dissertations, Fall 2023 to Present

Fluid mechanics is a difficult engineering course that tends to act as a weed-out course for undergraduate students. Despite this, fluid mechanics is critical, with related careers in disciplines such as Mechanical, Aerospace, Civil, Environmental, Biological, Ocean, and Naval engineering. Within these fields, there is a lack of graduates with sufficient fluid mechanics knowledge to fill the available positions. One solution to this career pipeline is to increase student interest and understanding of fluid mechanics.

Efforts to make fluid mechanics more interesting and easily understood include curricular changes such as emphasizing historical aspects of fluids, computer simulations that model complex …

Comparing Scaling Approaches To Estimate Unimpaired Streamflow Timeseries And Seasonal Flow Metrics At Ungauged Streams, Karl Christensen

All Graduate Theses and Dissertations, Fall 2023 to Present

River ecosystems are controlled in part by natural variation in the flow regime and streamflow alterations that impair these natural variations often have negative impacts for aquatic species. Flow metrics describing attributes of the natural flow regime can inform environmental water management goals to maintain and restore river ecosystems by mirroring critical aspects of the natural flow regime. However, unimpaired daily streamflow data needed to calculate these flow metrics is not always readily available. Statistical scaling approaches present an opportunity to estimate unimpaired flow metrics at ungauged locations to better address environmental water management objectives. This study evaluates a suite …

Impact Of Moisture Content And Composition On Flow Properties Of Dairy Powders, Katelynn Palmer

All Graduate Theses and Dissertations, Fall 2023 to Present

Milk protein concentrate (MPC) and isolate (MPI), and milk permeate powder (MPP) are functional dairy powder products that are used in food applications worldwide. It is critical that environmental factors and physical powder characteristics during production and storage are controlled. When dairy powders are exposed to non-ideal conditions (high moisture, varying temperatures,) they can quickly become very sticky, and clumpy. When powders become sticky, their ability to easily flow is reduced. As a result, processing and storing the powders effectively and sustainably becomes very difficult.

In the first study, an analysis method was created to test the general flow behavior …

The Many Side Jobs Of Lateral Suppressor (Ls) In Plant Development, Janlo M. Robil

Biology Faculty Publications

No abstract provided.

Quantification Of Tumor Biophysical Heterogeneity Through Mechanical And Ultrastructural Analysis., Bradley James Mahaffey

Electronic Theses and Dissertations

Glioblastoma (GBM) is a highly invasive, aggressive brain cancer that carries a median survival of 15 months. This poor prognosis is due, in part, to its resistance to standard therapeutic intervention. Recent studies have demonstrated that tumor heterogeneity plays a critical role in facilitation therapy resistance by mediating tumor adaptation through microenvironmental cues. Efforts to describe these microenvironmental differences may aid in the development of strategies to combat resistance. GBM can be separated into two distinct regions – a core and a rim, which are thought to drive specific aspects of tumor evolution. The core is proliferative as evidenced by …

Critical Regionality & Alternative Pedagogies In Eastern Kentucky., Zachary Shelton

Electronic Theses and Dissertations

This study examines the history of several Appalachian educational institutions, their approaches, and how that may influence contemporary Eastern Kentucky students (the Appalachian region in Kentucky). Eastern Kentucky today suffers from high rates of poverty and low rates of educational attainment, with a postsecondary attainment rate less than half of the nation’s average. This study proposes looking at Eastern Kentucky’s educational history and proposing ways to alter the current standardized pedagogies in secondary schools to cultivate higher rates of academic interest and motivation. I approach Eastern Kentucky’s complex history with the institution of education and its contemporary implications through a …

Hybrid Wall Outlet For Ac Or Dc Power Delivery, Garrett Knoller, Kerr Allan, Greg Perini

Electrical Engineering

The goal of this project is to develop hybrid DC and AC wall outlets for an efficient, flexible power interface. A DC plug standard is also proposed to allow DC devices to be safely powered by the outlet with the correct DC voltage for each device. The primary objective is to create a power outlet compatible with the proposed DC plug as well as NEMA 5-15 AC plugs, enabling the same outlet to power both types of load as needed. The outlet is intended for buildings and systems transitioning to an isolated DC grid to encourage DC development and adoption. …

Dc To Ac Inverter For A Microgrid-Inspired Power Distribution Architecture For Electric Vehicles, Bryan A. Carrillo Martinez, Eli Blacklock, Paul A. Samson, William S. Holt-Hillis

Electrical Engineering

This project builds upon the prototyping of a microgrid-inspired power distribution architecture for electric vehicles (EVs). The efficacy of this prototype aims to inform a full-scale power distribution system that charges an EV battery, supports the electric grid with important ancillary services, performs peer-to-peer EV charging, and works in conjunction with other AC and DC sources and loads. The scope of this report focuses specifically on the design, construction, and testing of the DC/AC inverter. Future development of this distribution architecture will incorporate synchronous generators, a battery management system, and an Arduino/Raspberry Pi-based communication system to fully simulate an electric …

Digital Filter Implementation On A Dsp Development Board, Tien Le, Helen Zhang

Electrical Engineering

This project to implement digital filters on a Digital Signal Processor (DSP) development board intends to demonstrate viability for future use in teaching digital signal processing lab courses. The digital filter types covered, including Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filters of various basic frequency responses, will mirror current DSP lab projects to fulfill course learning objectives for filter design and characterization. Design features will include speed optimization to enable real-time digital signal processing. This project will investigate the use of Code Composer Studio to compile C and assembly code to the DSP. Alternatives for currently available …

4-Band Personal Eq Device, Carson Kellerman

Electrical Engineering

The device is a 4-band EQ with 3.5mm audio input and output jacks. The device has 4 adjustable EQ bands. Each of the 4 bands are adjustable via knob potentiometers, and are able to boost or cut their respective center frequencies of 150Hz, 400Hz, 2500Hz, and 10kHz from -15dB to +15dB. The device is battery powered off of 1 9V battery and is able to function for 10 hours before needing to replace the batteries. The device has a Total Harmonic Distortion of less than 1% and a Signal to Noise Ratio greater than 60dB. Overall, this device allows music …

Design Of An Angle Measurement Device Using Ultrasonic Pairs, Shadi Khanpour Doustkar

Electrical Engineering

In this paper, a new concept for ultrasonic indoor positioning built upon instantaneous frequency of ultrasonic signals is presented. Ultrasonic sensors are inexpensive and manageable sensors; they are currently not used to good advantage with their potential for the electronics industry. The current ultrasonic sensors in the market only present a distance value to the nearest object for the user and due to this kind of feedback, it’s not attainable to find the relative position of the object from the sensor in a detection area; examples vary from workpieces and robots to even people. By using an algorithm and multiple …

2023-12-01 Minutes & Appendices, Longwood University

Board of Visitors Meeting Minutes 1964-

No abstract provided.

Potential Security Vulnerabilities In Raspberry Pi Devices With Mitigation Strategies, Briana Tolleson

Cybersecurity Undergraduate Research Showcase

For this research project I used a Raspberry Pi device and conducted online research to investigate potential security vulnerabilities along with mitigation strategies. I configured the Raspberry Pi by using the proper peripherals such as an HDMI cord, a microUSB adapter that provided 5V and at least 700mA of current, a TV monitor, PiSwitch, SD Card, keyboard, and mouse. I installed the Rasbian operating system (OS). The process to install the Rasbian took about 10 minutes to boot starting at 21:08 on 10/27/2023 and ending at 21:18. 1,513 megabytes (MB) was written to the SD card running at (2.5 MB/sec). …