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Monitoring Of Microscopic Traffic Behavior For Safety Applications Using Temporal Logic, Mariam Wessam Hassan Mohamed Nour Jan 2021

Monitoring Of Microscopic Traffic Behavior For Safety Applications Using Temporal Logic, Mariam Wessam Hassan Mohamed Nour

Electronic Theses and Dissertations, 2020-2023

Smart cities are revolutionizing the transportation infrastructure by the integration of technology. However, ensuring that various transportation system components are operating as expected and in a safe manner is a great challenge. One of the proposed solutions is traffic monitoring systems which collect and analyze traffic data for the safe operation and management of the overall system. Even though traffic safety analysis has been tied to crash data, surrogate safety measures (SSM) have recently emerged as a replacement. SSM can provide a convenient alternative for understanding the impact of conflicts on overall road safety. Traditionally, conflicts were studied through manual …

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Secure And Trustworthy Hardware And Machine Learning Systems For Internet Of Things, Shayan Taheri Jan 2021

Secure And Trustworthy Hardware And Machine Learning Systems For Internet Of Things, Shayan Taheri

Electronic Theses and Dissertations, 2020-2023

The advancements on the Internet have enabled connecting more devices into this technology every day. This great connectivity has led to the introduction of the internet of things (IoTs) that is a great bed for engagement of all new technologies for computing devices and systems. Nowadays, the IoT devices and systems have applications in many sensitive areas including military systems. These challenges target hardware and software elements of IoT devices and systems. Integration of hardware and software elements leads to hardware systems and software systems in the IoT platforms, respectively. A recent trend for the hardware systems is making them …

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The Impact Of Misspecification Of Within-Person Autocorrelated Covariance Structure On Nonlinear Latent Growth Curve Models: A Monte Carlo Simulation Study, Mingming Zhou Jan 2021

The Impact Of Misspecification Of Within-Person Autocorrelated Covariance Structure On Nonlinear Latent Growth Curve Models: A Monte Carlo Simulation Study, Mingming Zhou

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to assess the effects of misspecification (i.e., under-specification, over-specification, and general misspecification) of the within-person level errors in longitudinal data under quadratic, exponential, and logistic latent growth curve models and to make a contribution to the literature in this area. A Monte Carlo simulation in R uncovered a common bias pattern throughout this study. For under-specification of autocorrelated processes and general misspecification of MA as AR, the mean intercept was more likely to be downward- biased, but the linear slope and nonlinear slope for an individual tend to be upward-biased. On average, the variation …

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Downregulation Of Mir-34a Via Calorie Restriction Regulates Lipid Metabolism In The Liver Of Long-Living Ames Dwarf Mice, Sarah Ashiqueali Jan 2021

Downregulation Of Mir-34a Via Calorie Restriction Regulates Lipid Metabolism In The Liver Of Long-Living Ames Dwarf Mice, Sarah Ashiqueali

Electronic Theses and Dissertations, 2020-2023

Ames dwarf mice (df/df) display delayed aging relative to their normal siblings, living approximately 40-60% longer. As such, investigating the mechanisms that enable these organisms to have superior life expectancies may prove useful in developing therapies to slow aging and deter age-related disease. Nonalcoholic fatty liver disease (NAFLD) is a condition that is characterized by the accumulation of excess adipose tissue in the liver. Interestingly, its prevalence tends to increase with age with an incidence rate of greater than 40% in individuals over the age of 60. Previous studies highlight the potential of calorie restriction (CR) in promoting longevity, but …

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Analysis Of Sign Language Facial Expressions And Deaf Students' Retention Using Machine Learning And Agent-Based Modeling, Marie Alaghband Jan 2021

Analysis Of Sign Language Facial Expressions And Deaf Students' Retention Using Machine Learning And Agent-Based Modeling, Marie Alaghband

Electronic Theses and Dissertations, 2020-2023

There are currently about 466 million people worldwide who have a hearing disability, and that number is expected to increase to 900 million by 2050. About 15% of adult Americans have hearing disabilities and about every three in 1,000 U.S. children are born with hearing loss in one or both ears. The World Health Organization (WHO) estimates that unaddressed hearing loss poses an annual global cost of $980 billion, including cost of educational support, loss of productivity, and societal costs. These are all evident that people with hearing loss are experiencing several kinds and levels of difficulties. In this dissertation, …

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Experimental And Chemical Kinetics Investigation Of High-Temperature Combustion Of Diisopropyl Methylphosphonate., Ramees Khaleel Rahman Jan 2021

Experimental And Chemical Kinetics Investigation Of High-Temperature Combustion Of Diisopropyl Methylphosphonate., Ramees Khaleel Rahman

Electronic Theses and Dissertations, 2020-2023

Due to the high toxicity of chemical warfare (CW) agents, laboratory experiments are carried out using CW surrogates. Diisopropyl Methylphosphonate (DIMP), an organophosphate compound (OPC), is a crucial CW surrogate that has a chemical structure like the deadly nerve agent Sarin (GB). In this work, high-temperature combustion of DIMP is studied in a shock tube to understand the kinetics of destruction of DIMP. Laser absorption spectroscopy was used to obtain carbon monoxide mole fraction time-histories during high-temperature combustion of DIMP. Since combustion involves complex mixing phenomena involving different fuel to oxidizer ratios, experiments were conducted at conditions relevant to a) …

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Periodicity Estimation Using Representations In Nested Periodic Dictionaries With Applications In Neural Engineering, Pouria Saidi Jan 2021

Periodicity Estimation Using Representations In Nested Periodic Dictionaries With Applications In Neural Engineering, Pouria Saidi

Electronic Theses and Dissertations, 2020-2023

In this dissertation, we investigate periodicity estimation with nested periodic dictionaries (NPDs), a newly introduced family of matrices that can capture periodicity in the data. We address two main problems. First, we study the detection of periodic signals using their representations in NPDs. To this end, the detection problem is posed as a composite hypothesis testing problem, where the signals are assumed to admit sparse representations in a Ramanujan Periodicity Transform (RPT) dictionary as an instance of NPDs. For the binary case, we develop a generalized likelihood ratio detector and obtain exact distributions of the test statistics in terms of …

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An Investigation Of Student Mental Health Supports In Florida Public School Districts, Rebecca Carter Jan 2021

An Investigation Of Student Mental Health Supports In Florida Public School Districts, Rebecca Carter

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to determine the mental health services being provided to students in the state of Florida, specifically the identification of mental health concerns among students, prevention strategies, and interventions utilized. This study consisted of a document analysis of the Mental Health Assistance Allocation Plans submitted to, and posted by, the Florida Department of Education, for the purpose of developing a grounded theory to standardize the recommended practices in serving the mental health needs of students. Standardized recommended practices that emerged from the analysis included (a)universal screening to identify students demonstrating or developing mental health concerns, …

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Numerical Modeling Of Shockwave Initiated Combustion Of A Hydrogen-Oxygen Mixture Within A Shock Tube, Reed Forehand Jan 2021

Numerical Modeling Of Shockwave Initiated Combustion Of A Hydrogen-Oxygen Mixture Within A Shock Tube, Reed Forehand

Electronic Theses and Dissertations, 2020-2023

Shock tubes are as close to an ideal reactor as most modern experiments can attain to examine chemical kinetics. As reaction temperatures drop, homogeneous combustion within a shock tube begins to exhibit inhomogeneous modes, which in a typical Hydrogen-Oxygen system are ex- pressed as deflagration to detonation transition. Experimental results of such a system in the Uni- versity of Central Florida's low-pressure shock tube have been collected through end and side-wall imaging to analyze flame structure and chemical kinetics. The purpose of this work is to con- duct a baselining of these results using both chemical and computational fluid dynamics …

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An Examination Of Factors Associated With Lgbtq+ College Students' Adoption Of Post-Exposure Prophylaxis (Pep) As An Hiv Prevention Method, Shayna Forgetta Jan 2021

An Examination Of Factors Associated With Lgbtq+ College Students' Adoption Of Post-Exposure Prophylaxis (Pep) As An Hiv Prevention Method, Shayna Forgetta

Electronic Theses and Dissertations, 2020-2023

Post-exposure prophylaxis (PEP) is an effective human immunodeficiency virus (HIV) prevention medication taken after exposure, yet it is not widely used in the lesbian, gay, bisexual, transgender, and queer/questioning (LGBTQ+) community. Understanding its acceptability is vital, given this population's increased risk for contracting HIV. Drawing from the Health Literacy Skills Framework and the Theory of Planned Behavior, this study provides an examination of PEP-related awareness and knowledge, as well as intention to request and use PEP. Using a cross-sectional survey design, a convenience sample of 131 LGBTQ+ college students from a Southeastern university was recruited through email and social media. …

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Examining The Experiences Of New Manager Coaches, Theresa Greer Jan 2021

Examining The Experiences Of New Manager Coaches, Theresa Greer

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to examine new managers' experiences as they transitioned from an individual contributor and coachee to a manager and coach at Blue Sun Corporation (pseudonym). Understanding these experiences was essential to providing appropriate support to help new manager coaches acquire the coaching skills needed to consistently coach and develop their employees. This study's results will guide the design of future new manager training and organizational support initiatives by providing a deeper understanding of new manager coaches' experiences. A phenomenological research design was used for this study because it focused on understanding new manager coaches' experiences …

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Health Literacy, Knowledge, Attitudes, And Opioid Use Behavior Among College Students, Khristen Holmes Jan 2021

Health Literacy, Knowledge, Attitudes, And Opioid Use Behavior Among College Students, Khristen Holmes

Electronic Theses and Dissertations, 2020-2023

Opioid-related deaths have increased rapidly over the last couple of decades due to the overprescribing of prescription opioids and the availability of illicit drugs from family members, friends, or street dealers. To address this crisis, this research will attempt to identify how health literacy levels affect knowledge, attitudes, and behaviors. Hence, this study is informed by the Knowledge-Attitude-Behavior (KAB) Model. The KAB model is used to determine the influence of knowledge and attitudes on behaviors, which includes prescription drugs, illicit drugs, and fentanyl. This dissertation aims to explore the relationships between health literacy, knowledge, attitude, and behavior for opioids (prescription …

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Engaging Elementary Preservice Teachers In Reflection For, In, And On Practice During An Approximation Of Practice In Teachlivetm Using Sentence Frames For English Language Learners, Courtney Lopas Jan 2021

Engaging Elementary Preservice Teachers In Reflection For, In, And On Practice During An Approximation Of Practice In Teachlivetm Using Sentence Frames For English Language Learners, Courtney Lopas

Electronic Theses and Dissertations, 2020-2023

The purpose of this study was to explore how a teacher educator (myself) and preservice teachers engaged in joint reflection-for-action, reflection-in-action, and reflection-on-action during an approximation of practice in a TeachLivETM setting using sentence frames to support English Language Learners' (ELLs') writing. Four elementary education preservice teachers participated in this study based on set inclusion criteria. This action research study included video-recorded approximations of practice, the sentence frames preservice teachers submitted in the skill seven module, reflective journaling, and analytic memoing. Instructional sequence analysis through transcription, holistic coding, message units, action units, interaction units, instructional sequences, and phase units were …

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Using Wearable Assistive Technology To Improve Time Management Of Students With Disabilities In A School-Based Employment Training Setting, Jonathan Solomon Jan 2021

Using Wearable Assistive Technology To Improve Time Management Of Students With Disabilities In A School-Based Employment Training Setting, Jonathan Solomon

Electronic Theses and Dissertations, 2020-2023

All areas of life require time management, but those skills are especially integral and require a different level of accountability for an individual to be successful in academia or when employed (DiPipi-Hoy et al., 2009; Macan et al., 1990). A study by Janeslätt et al. (2015) measured daily time management of adults and found individuals with cognitive disabilities possessed low daily time management skills compared to neurotypical peers. In a study by Button et al. (2019) the majority of college students with disabilities at one university who sought out support services spent most of their time working on the area …

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A Causal Comparative Examination Of The Effects Of Tiered Interventions Within The Mtss Framework In One Intermediate Grade, Hope Strange Jan 2021

A Causal Comparative Examination Of The Effects Of Tiered Interventions Within The Mtss Framework In One Intermediate Grade, Hope Strange

Electronic Theses and Dissertations, 2020-2023

This post hoc quantitative research used a causal-comparative design to explore the relationship between tiered interventions as part of an MTSS intervention and student achievement. Data from the Florida Standards Assessment for English Language Arts (FSA ELA) and mathematics (FSA Mathematics) from 2018 and 2019 formed the basis of the study; student demographic data also identified each student's highest level of reading, mathematics, and behavior interventions during the 2018-2019 school year. Students who received interventions were coded into a separate higher tier. Percentile change was calculated and analyzed using an ANOVA to determine how percentile change differed by intervention tier. …

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Examining The Lived Experiences Of Secondary Teachers Using Visuals And Leveled Texts With English Learners At Various Levels Of Language Acquisition, Jasmine Taylor Jan 2021

Examining The Lived Experiences Of Secondary Teachers Using Visuals And Leveled Texts With English Learners At Various Levels Of Language Acquisition, Jasmine Taylor

Electronic Theses and Dissertations, 2020-2023

The purpose of this qualitative, phenomenological Dissertation in Practice was to understand teachers' experience with the creation and use of visuals and leveled texts, written at various English proficiency levels, with English learners (ELs) in English II classrooms at a large high school in Central Florida. The need to examine teachers' experience with these scaffolds arose from the disparity between academic achievement rates of ELs and non-ELs as measured by the Florida Standards Assessment (FSA). This complex problem can be addressed from a multitude of perspectives, and this Dissertation in Practice sought to examine specific practical scaffolds that mainstream English …

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Classification Of Ground-Truth Fire Debris Samples Using Neural Networks, Nicholas Thurn Jan 2021

Classification Of Ground-Truth Fire Debris Samples Using Neural Networks, Nicholas Thurn

Electronic Theses and Dissertations, 2020-2023

Fire debris samples are currently analyzed according to ASTM E1618-19, which is the "Standard Test Method for Ignitable Liquid Residues in Extracts from Fire Debris Samples by Gas Chromatography-Mass Spectrometry." This method requires that an analyst make a visual comparison to an appropriate reference sample using the total ion and the extracted ion chromatograms. The analyst then provides an opinion about whether an ignitable liquid residue is present in the sample. The method is inherently subjective due to the visual interpretation that is needed. In order to automate this process, this work uses neural networks and a subset of the …

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Towards Improving The Robustness Of Neural Abstractive Summarization, Kaiqiang Song Jan 2021

Towards Improving The Robustness Of Neural Abstractive Summarization, Kaiqiang Song

Electronic Theses and Dissertations, 2020-2023

Recent deep learning and sequence-to-sequence learning technology have produced impressive results on automatic summarization. However, the models have limited insights on the underlying language and it remains challenging for system-generated summaries to be truthful to the original input or cover the most important information. This is especially the case for generating abstractive summaries using neural models. My work aims for a flexible and controllable summarization system that can be adapted to cater to different scenarios. It is designed to incorporate linguistic structure information into deep neural networks, have the capability to produce abstracts by re-using a varying amount of source …

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Chitosan-Gallium Nanocomposite: Synthesis, Characterization And Antibacterial Activity, Samjhana Bhandari Jan 2021

Chitosan-Gallium Nanocomposite: Synthesis, Characterization And Antibacterial Activity, Samjhana Bhandari

Electronic Theses and Dissertations, 2020-2023

The emergence of multidrug-resistant (MDR) strains of bacteria and the lack of a novel class of antibiotics has become a global health concern. Pseudomonas aeruginosa is one common MDR bacteria responsible for nosocomial infections and related mortality worldwide. It has developed resistance against commonly available antibiotics and is in the WHO's priority list of bacteria for which new antibiotics are desperately needed. Currently there is a growing interest in developing metal and non-metal-based nanoparticles to target multidrug-resistant bacteria. The objective of this study is to evaluate the efficacy of a novel nanocomposite of two non-traditional antimicrobials: a metal (Ga-III) and …

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Influence Of Geography On The Healthy Gut Microbiome And The Role Of The Gut Microbiome In Ibd Symptom And Disease Progression, Sayf Al-Deen Hassouneh Jan 2021

Influence Of Geography On The Healthy Gut Microbiome And The Role Of The Gut Microbiome In Ibd Symptom And Disease Progression, Sayf Al-Deen Hassouneh

Electronic Theses and Dissertations, 2020-2023

The human gut microbiome is believed to play an integral role in host health and disease. In a microbial community, associations between constituent members play an important role in determining the overall structure and function of the community. To understand the nature of bacterial associations at the species level in healthy human gut microbiomes, we analyzed previously published collections of whole-genome shotgun sequence data, from fecal samples obtained from four different healthy human populations. Using a Random Forest Classifier, we identified bacterial species that were prevalent in these populations and whose relative abundances could be used to accurately distinguish between …

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A Framework And Model For Managing And Sustaining A Successful Cross Functional Project Operations Team In A Multi-Project Manufacturing Environment In The Aerospace And Defense Industry, Anisulrahman Nizam Jan 2021

A Framework And Model For Managing And Sustaining A Successful Cross Functional Project Operations Team In A Multi-Project Manufacturing Environment In The Aerospace And Defense Industry, Anisulrahman Nizam

Electronic Theses and Dissertations, 2020-2023

Project manufacturing is a production manufacturing mode that develops and produces large and complex systems that is supplemented by project management techniques for planning and execution. Project manufacturing is better understood by examining it along with three other key areas: manufacturing, project management, and team management. Critical success factors for each of these areas have been examined in the literature but have not been examined in a real world setting in the aerospace and defense industry. This research examines the association between perspectives of project teams and senior management on critical success factors along the four identified dimensions of success …

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Exploring Relationships Between Ground And Aerial Views By Synthesis And Matching, Krishna Regmi Jan 2021

Exploring Relationships Between Ground And Aerial Views By Synthesis And Matching, Krishna Regmi

Electronic Theses and Dissertations, 2020-2023

Cross-view images, referring to the images taken from aerial and street views, contain drastically differing representations of the same scene of a given location. Due to the differences in the camera viewpoints of ground and aerial images the same semantic concepts in the two viewpoints look very different. Therefore the problem of relating them is very challenging. Thus, it becomes crucial to explore the cross-view relations and learn appropriate representations such that images from these two domains can be associated. In this dissertation we explore the relationship between ground and aerial views by synthesis and matching. First, we explore supervised …

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Test Overfitting In Automated Program Repair: Measurements And Approaches Using Formal Methods, Amirfarhad Nilizadeh Jan 2021

Test Overfitting In Automated Program Repair: Measurements And Approaches Using Formal Methods, Amirfarhad Nilizadeh

Electronic Theses and Dissertations, 2020-2023

Bugs exist in software systems; unfortunately, manually finding bugs and repairing them is complex, time-consuming, and expensive. Automated Program Repair (APR) techniques have promising results to make the debugging process automatic and dramatically decreasing the cost of developing a software system. Almost all developed APR tools use test suites to bug localization and evaluate generated candidate patches' correctness; thus, it is named dynamic APR. Test overfitting is one of the main challenges of dynamic APR tools, which is evident from several recent studies. Test overfitting means the repaired program is not correct based on the program's expected behavior while the …

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Reliable And Efficient Cognitive Radio Communications Using Directional Antennas, Hassan Yazdani Jan 2021

Reliable And Efficient Cognitive Radio Communications Using Directional Antennas, Hassan Yazdani

Electronic Theses and Dissertations, 2020-2023

Cognitive Radio (CR) is a promising solution that enhances spectrum utilization by allowing an unlicensed or Secondary User (SU) to access licensed bands in a such way that its imposed interference on a license holder Primary User (PU) is limited, and hence fills the spectrum holes in time and/or frequency domains. Resource allocation, which involves scheduling of available time and transmit power, represents a crucial problem for the performance evaluation of CR systems. In this dissertation, we study the spectral efficiency maximization problem in an opportunistic CR system. Specifically, in the first part of the dissertation, we consider an opportunistic …

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Evaluation Of Unconventional Signalized Intersections On Arterial Roads And A Proposition For A Novel Intersection Design, Ma'en Al-Omari Jan 2021

Evaluation Of Unconventional Signalized Intersections On Arterial Roads And A Proposition For A Novel Intersection Design, Ma'en Al-Omari

Electronic Theses and Dissertations, 2020-2023

Several unconventional intersection designs were proposed and implemented to enhance traffic safety and operation at intersections. The efficiency of these intersection designs was not sufficiently evaluated in the previous research because of the limited implementation of such designs. However, with the growing interest in the implementation of unconventional intersections by municipalities and transport agencies, it has become a need for a comprehensive evaluation of their safety and operational benefits. Therefore, this dissertation aims to evaluate the safety and operational aspects of unconventional intersection designs by employing different research approaches: crash analysis, microscopic simulation, and driving simulation. Firstly, this dissertation evaluated …

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Econometric Frameworks For Energy Prediction, Naveen Chandra Iraganaboina Jan 2021

Econometric Frameworks For Energy Prediction, Naveen Chandra Iraganaboina

Electronic Theses and Dissertations, 2020-2023

Global warming and associated role of energy consumption across various sectors is a well-researched topic in recent years. Understanding current urban energy consumption patterns will allow us to understand how future energy consumption patterns will evolve. With electrification of vehicles and potentially altering culture of work from home, the energy usage at regional level would see a significant change in the future. The current PhD dissertation contributes to energy consumption analysis of a region by analyzing residential energy consumption, commercial energy consumption and transportation energy use by households. The aggregation of these energy consumption within a region contributes to the …

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Fpga-Augmented Secure Crash-Consistent Non-Volatile Memory, Yu Zou Jan 2021

Fpga-Augmented Secure Crash-Consistent Non-Volatile Memory, Yu Zou

Electronic Theses and Dissertations, 2020-2023

Emerging byte-addressable Non-Volatile Memory (NVM) technology, although promising superior memory density and ultra-low energy consumption, poses unique challenges to achieving persistent data privacy and computing security, both of which are critically important to the embedded and IoT applications. Specifically, to successfully restore NVMs to their working states after unexpected system crashes or power failure, maintaining and recovering all the necessary security-related metadata can severely increase memory traffic, degrade runtime performance, exacerbate write endurance problem, and demand costly hardware changes to off-the-shelf processors. In this thesis, we summarize and expand upon two of our innovative works, ARES and HERMES, to design …

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Perceived Impacts Of Collaborative Technology On Grant Writing Teams: Collaboration, Productivity, And Quality Of Writing, Joshua Roney Jan 2021

Perceived Impacts Of Collaborative Technology On Grant Writing Teams: Collaboration, Productivity, And Quality Of Writing, Joshua Roney

Electronic Theses and Dissertations, 2020-2023

When a team works together on a collaborative grant proposal, each member will bring expertise and past experience in developing this complex text. Online collaborative tools can be used to support this effort, but it is important to understand how team members perceive the tools, the ways they can or should be used, and the impacts of using them. By adapting the Task-Technology Fit (TTF) model to this context, we can consider perceived task and technology characteristics, performance impacts, and utilization. Trends can be analyzed regarding the perceived fit of specific online collaborative tools to support collaboration, productivity, and quality …

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Signals As Symbols: Applying Normalization Of Deviance To Improve User-Centered Design, Amy Vanschaik Jan 2021

Signals As Symbols: Applying Normalization Of Deviance To Improve User-Centered Design, Amy Vanschaik

Electronic Theses and Dissertations, 2020-2023

Mistakes can happen in the process of designing and developing interactive digital projects. Sometimes these mistakes negatively impact users' perception and trust of digital interfaces. This research applies the concept of normalization of deviance to identify potential missed opportunities in user-centered design data within the context of a website redesign. By doing this I explore how through observing accidental deviant behaviors or processes we can identify ways to improve the usability and user experience of digital environments. I review the concepts of normalized deviant behavior as addressed by Diane Vaughan in the field of engineering and identify a process for …

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Assessment Of Work-Related Feelings Among Teachers Within The United States And Jordan, Shahed Obeidat Jan 2021

Assessment Of Work-Related Feelings Among Teachers Within The United States And Jordan, Shahed Obeidat

Electronic Theses and Dissertations, 2020-2023

Human personalities combined with working conditions affect how employees react to different work situations. Personality and work environment have also been shown to affect workers' feelings. Employees' psychological health plays an essential role in their performance and productivity in the workplace, and organizational awareness of work-related feelings has sparked interest in investigating this field of study. Teaching is a stressful job; however, research evaluating discrete states of work-related emotions in teachers remains somewhat limited. This study investigated the effects of job demands on teachers' work-related feelings within middle and high schools in the United States and Jordan. The study results …

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