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Full-Text Articles in Entire DC Network
The “Made In Egypt” Label Effect On Egyptian Consumers’ Purchase Intention, Mirna Ibrahim Khela
The “Made In Egypt” Label Effect On Egyptian Consumers’ Purchase Intention, Mirna Ibrahim Khela
Theses and Dissertations
This study employed a survey to investigate the Country of origin (COO) effect of the “Made in Egypt” label on Egyptian consumers’ purchase intentions of products and services. By using the conjoint analysis, the study was able to test the purchase intention process. The study tested high durability, low durability, and service industry, with attributes (price, specs, and COO) and levels (within attributes). Respondents were given several combinations of those attributes and levels through the survey design. They were asked to trade off the least important attributes for the most important ones to reach a final purchase decision. Previous studies …
Encouraging Equal Musical Collaboration : A Guide For Collaborative Pianists In Facilitating Effective Rehearsals, Michelle Ann Henning
Encouraging Equal Musical Collaboration : A Guide For Collaborative Pianists In Facilitating Effective Rehearsals, Michelle Ann Henning
Theses and Dissertations
No abstract provided.
The History, Evolution, And Maintenance Of Violin Strings, Iva Pecotić
The History, Evolution, And Maintenance Of Violin Strings, Iva Pecotić
Theses and Dissertations
No abstract provided.
The Future Of Socialization: Linking Socialization To Employee Engagement, Alexander Michael Dechurch
The Future Of Socialization: Linking Socialization To Employee Engagement, Alexander Michael Dechurch
Theses and Dissertations
This study examines the relationship between socialization and engagement. In doing so this study investigates and measures the impact that social integration, task mastery, autonomy, role clarity, satisfaction with socialization, job embeddedness, network characteristics, network capital, and online socialization have in linking socialization to engagement. The sample for this study utilized data from Amazon Mechanical Turk. The results suggest that institutionalized socialization tactics relate to higher reported engagement. In addition, social integration, autonomy, job embeddedness, network strength, and network capital each play a significant role in the observed relationship
Preferences Toward Augmented Reality Technologies For Pedestrian Navigation, Victoria Alejandra Diaz Mejia
Preferences Toward Augmented Reality Technologies For Pedestrian Navigation, Victoria Alejandra Diaz Mejia
Theses and Dissertations
This research investigates the demand for pedestrian navigation supported by augmented reality (AR) via headset and mobile technologies by evaluating factors specific to each technology and the decision makers. Recent advances in digital engineering systems, e.g., digital twins and smart cities, are enabling new services like AR-supported wayfinding for pedestrians. Still, it is unknown whether American pedestrians would use AR, the type devices and feature that add value to their navigation, the demographic profiles more inclined to AR wayfinding, and the sensitivity of such demand to software and hardware cost. As the first investigation addressing the demand for AR pedestrian …
Understanding The Effectiveness Between Modern Technologies And Traditional Training Methods Of E-Learning On An Individual’S Learning Curve, Content Retention, And Satisfaction, Andressa Camacho Ortiz
Understanding The Effectiveness Between Modern Technologies And Traditional Training Methods Of E-Learning On An Individual’S Learning Curve, Content Retention, And Satisfaction, Andressa Camacho Ortiz
Theses and Dissertations
E-learning has become a widespread and valuable tool for skill development. After the COVID-19 pandemic, the necessity and adaptability of this method increased drastically. Hence, numerous studies focused on understanding the effectiveness of this method. The academic literature highlights the need to explore alternative solutions that can increase a learner’s content retention and satisfaction when learning remotely. Modern technologies can be a great solution for this need with the correct application and development. This thesis analyzes the effects of technology on content retention, satisfaction, and learning curve through the following technologies: online platform, virtual reality (VR), and hologram display. A …
High-Level Requirements For Conceptual Design Of Bridge Deflection Measurement System Using Model-Based Systems Engineering, Mariana Villalabeitia Arenas
High-Level Requirements For Conceptual Design Of Bridge Deflection Measurement System Using Model-Based Systems Engineering, Mariana Villalabeitia Arenas
Theses and Dissertations
Bridges are essential in the infrastructure transportation system. Repairs and maintenance are the key activities to keep them safe for use. Over the years, the evolution of technology has been applied to improve the way bridges are designed, built, monitored, inspected, and repaired. Nevertheless, there is still a gap between the research efforts and the application of this knowledge in the practical field of bridge inspections. Model-based Systems Engineering is a formalized methodology in the system design that is centered around the model throughout all the life cycle stages of a system, supporting the requirements, design, analysis, verification, and validation …
Geometric Inference In Machine Learning: Applications Of Fisher Information For Model Selection And Other Statistical Applications, Trevor Herntier
Geometric Inference In Machine Learning: Applications Of Fisher Information For Model Selection And Other Statistical Applications, Trevor Herntier
Theses and Dissertations
We consider the problem of model selection using the Minimum Description Length (MDL) criterion for distributions with parameters on the hypersphere. Model selection algorithms aim to find a compromise between goodness of fit and model complexity. Variables often considered for complexity penalties involve number of parameters, sample size and shape of the parameter space, with the penalty term often referred to as stochastic complexity. Because Laplace approximation techniques yield inaccurate results for curved spaces, existing criteria incorrectly penalize complexity. We demonstrate how the use of a constrained Laplace approximation on the hypersphere yields a novel complexity measure that more accurately …
The Relationship Between Self-Rated Circumplex Traits And Other-Rated Job Performance, Michael Robert Sawdy
The Relationship Between Self-Rated Circumplex Traits And Other-Rated Job Performance, Michael Robert Sawdy
Theses and Dissertations
The Big Five has emerged as the dominant personality model in the researcher literature (Judge & Bono, 2000), yet there is still debate about how personality should be modeled within the Big Five framework as well as which personality traits relate most strongly to important outcomes across domains (DeYoung et al., 2007; Digman, 1997; Hofstee et al., 1992; Judge et al., 2002). The purpose of this study was to compare complex personality traits as defined by the circumplex personality approach to simple, hierarchical personality traits as defined by the standard personality model approach in relation to other-rated job performance. Overall, …
Determining Performance Characteristics From The Mississippi Cowling - Piper Warrior Vs. Piper Archer, Soufiane Ait Yahia
Determining Performance Characteristics From The Mississippi Cowling - Piper Warrior Vs. Piper Archer, Soufiane Ait Yahia
Theses and Dissertations
Today, Piper is one of the most used aircraft in the general aviation sector. The history of Piper Aircraft has been the subject of numerous books and research projects with over 80 years of aviation industry leadership. For aviation fanatics, the Cherokee is synonymous with Piper Aircraft Corporation. The Piper PA-28 Cherokee is a family of two-seat or four-seat light aircraft built for air taxi, flight training, and personal use. The original Piper Cherokees PA-28- 150 and PA-28-160 received their type certificate from the Federal Aviation Administration back in 1960 and the series remains in production to this day. Multiple …
Artificial Intelligence Superteams & Augmentation Strategies: Increasing Performance Of High-Functioning Virtual Team Members Via Human Machine Teaming Enhancements, Eric Lawrence Demirjian
Artificial Intelligence Superteams & Augmentation Strategies: Increasing Performance Of High-Functioning Virtual Team Members Via Human Machine Teaming Enhancements, Eric Lawrence Demirjian
Theses and Dissertations
Artificial intelligence (AI) can impact future workforce business operations in extraordinary ways through human-machine teaming. A human-machine teaming revolution will unleash enormous change upon businesses by merging humans and AI. For years, scholars and mainstream thought leaders have argued that firms must embrace AI and human-machine teaming to advance employee performance and deliver a high-performance, cost-effective, comprehensive business strategy (Raisamo, Rakkolainen, Majaranta, Salminen, Rantala, & Farooq, 2019). The era of human inadequacy, human-only teams, and human performance ceilings is disappearing as AI rapidly augments work and teams (Ashley & Sahota, 2019). AI augmentation and human-machine teaming will drive tomorrow’s blended …
Empirical Evaluation Of A Novel Spatial Disorientation Induction Strategy, Michaela Cathlin Satter
Empirical Evaluation Of A Novel Spatial Disorientation Induction Strategy, Michaela Cathlin Satter
Theses and Dissertations
It is estimated that spatial disorientation-related accidents account for roughly 33% of all aviation mishaps with a 90% fatality rate (Gibb et al., 2011). Research meant to establish common practices and standardization of spatial disorientation (SD) training is needed to work toward decreasing this staggering statistic. The current study investigated the viability of a novel SD Induction Strategy that combined rotation about the vertical axis, visual cue input from a wireless virtual reality (VR) head mounted display (HMD) flight environment, and tactile input from a wireless joystick controller. To assess this combination’s effectiveness, Bank situation awareness (SA) and Pitch SA, …
Exploring Factors That Influence Disagreements In Self-Other Ratings In 360-Degree Feedback Systems, Robert Allen Miller
Exploring Factors That Influence Disagreements In Self-Other Ratings In 360-Degree Feedback Systems, Robert Allen Miller
Theses and Dissertations
360-degree feedback systems are some of the most widely used ratings systems in organizations today. The current study examined the use of 360-degree feedback systems as a method for capturing job performance in organizations and the challenges associated with accuracy in ratings due to individual differences in perception. The study investigated the links between self-other rating tendencies and narrow facets of personality and examined how an individual’s personality affects self- and other-ratings of their performance behaviors. The findings suggest that various aspects of personality differentially affect both self- and other-ratings of performance, providing a deeper understanding of how individual differences …
Analysis Of Steroid Hormone Isomers Using Ion Mobility-Mass Spectrometry, Shon Paul Neal
Analysis Of Steroid Hormone Isomers Using Ion Mobility-Mass Spectrometry, Shon Paul Neal
Theses and Dissertations
This dissertation presents a comprehensive study on the analysis of steroid hormone isomers using liquid chromatography-ion mobility-mass spectrometry (LC-IM-MS). The dissertation is divided into three main parts: the first part focuses on research using different drift gases and ion adducts to modify the mobility separations allowing for resolution between the isomers. The second part focuses on research exploring derivatization reactions that target structural differences between the steroid hormone isomers to amplify the differences and resolve the isomers in the ion mobility region. The final part covers a proposal on future study directions to include simultaneous derivatization reactions, mass spectrometry fragmentation, …
Xeno-Free Biomimetic Ecm Model For Investigation Of Matrix Properties On Astrocyte Cell Response, Bayan Saleh
Xeno-Free Biomimetic Ecm Model For Investigation Of Matrix Properties On Astrocyte Cell Response, Bayan Saleh
Theses and Dissertations
Astrocytes are crucial in preserving the structural and functional integrity of the central nervous system (CNS). They participate in several physiological processes, such as the uptake of neurotransmitters, control of extracellular ion concentration, and preservation of the blood-brain barrier. Recent research has raised the possibility that astrocytes are also involved in the onset and development of Alzheimer's disease (AD). While the precise mechanisms underlying the development and progression of AD are not fully understood, recent research has suggested that age-related changes in the brain extracellular matrix (ECM) properties may play a critical role in the progression of the disease. Investigating …
Global Upper Bounds For The Landau Equation Of Plasma Physics In The Very Soft Potentials Case, Caleb Solomon
Global Upper Bounds For The Landau Equation Of Plasma Physics In The Very Soft Potentials Case, Caleb Solomon
Theses and Dissertations
This paper explores global upper bounds for solutions of the Landau equation in the soft potentials case (γ < −2). In particular, this paper explores the case of γ ∈ [−3,−2). Working with a classical solution to the Landau equation weighted by a cut-off function χ and using the Moser iteration, an upper bound for the L∞v norm of the solution to the Landau equation f is obtained proportianally to the L2 v norm of f with the assumptions of positive, essentially bounded coefficients. The supremum of f for t ∈ [0, T], x ∈ R3, v ∈ BR for some large radius R is shown to be bounded polynomially in R.
Causal Modeling Framework For Nuclear Power Plant Licensing Process, Lauren Kimberly Kiser
Causal Modeling Framework For Nuclear Power Plant Licensing Process, Lauren Kimberly Kiser
Theses and Dissertations
Interests in clean energy revived the nuclear power industry. For the first time in decades, innovative technologies and plant designs are being considered by regulatory agencies. This dissertation explores a Bayesian Network and AHP approach to causal modeling of the Combined License review process for new nuclear power plants (NPP). Historically lengthy and expensive, NPP licensing is critical to ensuring safe operation of the plants. With this comes a high standard for applicants to reach that can result in multiple revision cycles and long review times. New plant designs and fluctuating public support lead to a complex and dynamic series …
Characterizing Endothelial Damage During Ischemic Stroke Treatment With 3d Cerebrovascular Live Cellular And Finite Element Models, Ana Regina Martinez Dehesa
Characterizing Endothelial Damage During Ischemic Stroke Treatment With 3d Cerebrovascular Live Cellular And Finite Element Models, Ana Regina Martinez Dehesa
Theses and Dissertations
Stent retriever mechanical thrombectomy (SRMT) is part of the clinical standard-of-care for acute ischemic stroke (AIS) patients with large vessel occlusion (LVO). Endothelial injury (EI) is widely associated with SRMT. Studies report finding EI markers in over 50% of retrieved clots, suggesting the frequency of EI in MT patients is rather common. The mechanism of EI and its contribution to MT failure and clinical outcomes remain poorly understood because of a lack of techniques to observe EI and study it in vitro. This study aims to investigate the mechanisms of EI induced by SRMT, as well as the effect stent …
1. Influence Of Metal Ions And Solvents On The Photo-Generation Of Reactive Oxygen Species In Mesoporous Silicate Embedded Porphyrins 2.Water-Soluble Rhodium(Iii) Porphyrin Complex For The Biological Inactivation Of Fentanyl, Hemant Pal
Theses and Dissertations
Porphyrins are differentiated π-conjugated compounds with unique photochemical and redox properties. The tetrapyrrole macrocycle core of porphyrins is extremely favorable for the complexation of metal ions, resulting in hybrid metal-organic molecules with good catalytic properties. Porphyrin-based systems are known for their oxidative properties and are frequently utilized as bio-mimicking catalysts and environmental remediation agents. My current research aims at both of these aspects. One of the most efficient methods to create photocatalytic systems with outstanding features and applicability is the use of porphyrins on supported solid materials. A series of novel mesoporous silicate-embedded metalloporphyrins were prepared via conjugation of novel …
Modeling The Impact Of Scheduling Risks On Multi-Team Agile Projects, Bria Marie Booth
Modeling The Impact Of Scheduling Risks On Multi-Team Agile Projects, Bria Marie Booth
Theses and Dissertations
Agile project management allows for a quick response to a changing project environment. This opens possible avenues for new opportunities, but also may expose ongoing projects to previously unknown or unexpected threats. Risks must be continuously monitored as a product is worked on to avoid lost potential. This paper will propose a discrete event simulation model that multi-team projects may use to predict the impact to the project’s schedule. Using discrete event simulation early in the project’s planning cycle offers a greater understanding of the possible or probable impact of risks on the schedule. This would help to prepare project …
The Effect Of Biodiesel Blend Composition On Jet Aircraft Airframe Fuel System Components & Materials, Elise Aurora Medhus
The Effect Of Biodiesel Blend Composition On Jet Aircraft Airframe Fuel System Components & Materials, Elise Aurora Medhus
Theses and Dissertations
In the aviation industry, biodiesel is a clean-burning alternative to petroleum-based jet fuel and has been shown to reduce particle emissions from aircraft engines. This thesis studies the impact of biodiesel on aircraft airframe fuel system components & materials with corrosion-resistant surface treatments. The goal is to identify areas for optimization to increase the use of higher blends in jet aircraft engines to further reduce emissions. The work performed involved testing the corrosion resistance of several aluminum samples, steel samples, and non-metallic materials in numerous biodiesel blends ranging from B05 to B100. The testing method used was the Assessment of …
Predicting Near-Bed Sediment Transport Through Particle Image Velocimetry, Caroline Hoch
Predicting Near-Bed Sediment Transport Through Particle Image Velocimetry, Caroline Hoch
Theses and Dissertations
Erosion and accretion are coastal processes that directly affect the safety of coastal communities. Dimensionless parameters, such as the Shields and Ursell number, have historically been used to predict sediment motion in the nearshore region based on shear stress and wave linearity. This study uses particle image velocimetry to measure the velocity field of sediment within a wave flume and calculate these parameters for various wave profiles. Five regular wave trials and five irregular wave trials were run within the wave flume at varying depths to model how net transport changes as waves approach the shoreline. An instantaneous Shields number …
Modeling And Simulation Of Ion-Induced Volume Phase Transitions In Chemically-Active Polyelectrolyte Gels, Bindi Mahesh Nagda
Modeling And Simulation Of Ion-Induced Volume Phase Transitions In Chemically-Active Polyelectrolyte Gels, Bindi Mahesh Nagda
Theses and Dissertations
Ion-induced volume phase transitions in polyelectrolyte gels play an important role in physiological processes such as mucus storage and secretion in the gut, nerve tissue excitation, and DNA packaging. Biological experiments show that polyelectrolyte gels may swell or collapse rapidly due to changes in external conditions such as ionic composition. The volume phase transition is accompanied by a monovalent/ divalent ion exchange between the polymer network and the solvent that make up the gel. We propose a 2D computational method for simulating mucus swelling and deswelling with a two-fluid mixture model. The model includes electro-diffusive transport of ionic species, the …
Exploring Environmental Sensitivity And Significant Life Experiences Of Selected African American And Hispanic American College Students: A Mixed Methods Study, Danielle Pastor
Theses and Dissertations
This study explored Significant Life Experiences (SLEs) and the development of Environmental Sensitivity (ES) in a sample of African American and Hispanic American College Students. In the field of Environmental Education, SLEs and ES have been researched for the past 40 years. Specific factors associated with the development of ES have been identified (e.g., Chawla, 1998; Peterson, 1981; Tanner, 1980), and ES was found to be a predictor of environmental action (e.g., Marcinkowski, 2005; McBeth et al., 2014). Despite its importance, few studies have explored the development of ES among individuals who are majoring or working in an environmental field, …
A Comparison Of Automated Bolide Detection Methods, Maxine Thembi Khumalo
A Comparison Of Automated Bolide Detection Methods, Maxine Thembi Khumalo
Theses and Dissertations
Bolide recording and analysis are crucial so meteoroid fragments can be found, a lightcurve analyzed, and its trajectory calculated. The Spalding Allsky Camera Network (SACN) generates videos and composite images of the night sky that are potential meteors based on changes in brightness. The best way to ensure quick identification is to automate the detection of bolides (and all meteors) using computational techniques. This project tested three algorithms to sort events between those with and without meteors - a Traditional Hough Detection Method, Convolutional Neural Network (CNN), and YOLOv5 against the previous technique from 2018 by Elena Botella. All the …
A Step-By-Step Guide To Identify The Most Reliable Inventory Management System For Small Businesses Using Discrete Event Simulation And Pros And Cons Analysis: A Case Study At Camid-Florida Tech, Djalma Batista Oliveira Filho
A Step-By-Step Guide To Identify The Most Reliable Inventory Management System For Small Businesses Using Discrete Event Simulation And Pros And Cons Analysis: A Case Study At Camid-Florida Tech, Djalma Batista Oliveira Filho
Theses and Dissertations
According to the Department of Labor Statistics (2022), 20.6% of small businesses fail in their first year of operation, 42.6% fail after five years, and over 62.6% fail by their tenth year. One factor that can affect continued viability is the lack of knowledge and experience among small and medium-sized firms in inventory management. Despite the fact that inventory control is one of these businesses' most ignored management responsibilities, the expense of procuring inventory often accounts for a considerable portion of their budget. Due to poor inventory management or an inability to appropriately supervise their inventory, small firms may have …
Effects Of Process Parameters On The Dimensional Accuracy Of Fused Deposition Modeled Parts, Ethan Eugene Bair
Effects Of Process Parameters On The Dimensional Accuracy Of Fused Deposition Modeled Parts, Ethan Eugene Bair
Theses and Dissertations
Fused deposition modelling (FDM) is one of the most common additive manufacturing techniques used with applications ranging from rapid prototyping at a professional scale to simple part creation at a hobbyist scale. FDM printing has very little in terms of information based on how accurate printed parts can be. This issue, which is common amongst many different types of additive manufacturing techniques, is something that has not been studied in FDM printed parts in high volumes. Research based on the effects of process parameters on mechanical properties has been conducted in high proportions. This study focused on FDM machines using …
Development Of Design Method For Fiber Reinforced Slab On Ground, Abdullah Albogami
Development Of Design Method For Fiber Reinforced Slab On Ground, Abdullah Albogami
Theses and Dissertations
All the present methods of designing the slab-on-ground (SOG) are based on the flexural slab capacity (FSC) to determine the required thickness by calculating the modulus of rupture (MOR) of the concrete beam, depending on ASTM C78 or AASHTO T 97 specifications. All previous experimental results have confirmed that the MOR is much lower than the FSC and it cannot be used to predict FSC accurately. Hence, using the MOR to predict the FSC would lead to the underestimation of FSC and require more unnecessary thickness. Therefore, this study aims to develop accurate equation for estimating the FSC based on …
Development Of A Pediatric Heart Assist Device Monitoring System, Natalie Hill
Development Of A Pediatric Heart Assist Device Monitoring System, Natalie Hill
Theses and Dissertations
Heart failure (HF) is one of the leading causes of deaths for adults worldwide, but has disproportionately significant effects on pediatric patients that are often overshadowed. Treatment options for pediatric patients with HF are extremely limited, resulting in increased mortality rates within hospitals. Patients often depend on ventricular assist device (VAD) support as a bridge to transplant. The Berlin Heart EXCOR is the only FDA approved device for pediatric use in the US. However, many hemodynamic and neurological complications continue to arise; for instance, up to 30% of EXCOR patients suffer from stroke. Currently, there is no effective way to …
Water-Soluble Iron Porphyrin Complex For The Catalytic N-Dealkylation Of Fentanyl, Amanda Pitt
Water-Soluble Iron Porphyrin Complex For The Catalytic N-Dealkylation Of Fentanyl, Amanda Pitt
Theses and Dissertations
An increase in the misuse of opioids in the United States and the increasing potency of analogs necessitates novel treatments of opioid overdose. The chemical structure of synthetic opioids, such as fentanyl, carfentanil, and morphine possess a trialkyl amine functional group (-NR3) which makes for a promising target for potential catalysts. Iron (III)-tetrasulfonatophenyl porphyrin (complex 9) was synthesized as a potential catalyst for degradation of fentanyl. Complex 9a was prepared from the direct reaction of the free porphyrin and FeSO4. Complex 9b was prepared from the direct reaction of the free porphyrin and FeCl2 in refluxing DMF. The complexes were …