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Holding Off On The Fun Stuff: Academic Media Multitasking And Binge Watching Among College Students, Kelly Merrill Jr. Jan 2018

Holding Off On The Fun Stuff: Academic Media Multitasking And Binge Watching Among College Students, Kelly Merrill Jr.

Electronic Theses and Dissertations

College students are often faced with the temptation of engaging in academic media multitasking and binge watching or completing their academic coursework in a timely and effective manner. A quantitative survey (N = 651) explored trait individual differences in self-control and academic delay of gratification and situational individual differences in enjoyment, reward, procrastination, regret, and guilt as predictors of academic media multitasking frequency, binge watching frequency, and binge watching duration. Stepwise regressions reveal that self-control is not a predictor of these media behaviors, while age and greater enjoyment were the only predictors of academic media multitasking and gender and greater …

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Analyzing Destination Choices Of Tourists And Residents From Location Based Social Media Data, Md Mehedi Hasnat Jan 2018

Analyzing Destination Choices Of Tourists And Residents From Location Based Social Media Data, Md Mehedi Hasnat

Electronic Theses and Dissertations

Ubiquitous uses of social media platforms in smartphones have created an opportunity to gather digital traces of individual activities at a large scale. Traditional travel surveys fall short in collecting longitudinal travel behavior data for a large number of people in a cost effective way, especially for the transient population such as tourists. This study presents an innovating methodological framework, using machine learning and econometric approaches, to gather and analyze location-based social media (LBSM) data to understand individual destination choices. First, using Twitter's search interface, we have collected Twitter posts of nearly 156,000 users for the state of Florida. We …

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Animals Of The Cloud Forest: Isotopic Variation Of Archaeological Faunal Remains From Kuelap, Peru, Samantha Michell Jan 2018

Animals Of The Cloud Forest: Isotopic Variation Of Archaeological Faunal Remains From Kuelap, Peru, Samantha Michell

Electronic Theses and Dissertations

Stable isotopic analyses of faunal remains are used as a proxy for reconstructing the ancient Chachapoya dietary environment of the northeastern highlands in Peru. Archaeologists have excavated animal remains from refuse piles at the monumental center of Kuelap (AD 900-1535). This archaeological site is located at 3000 meters above sea level (m.a.s.l.), where C3 plants dominate the region. The study presented here is one of the few in the Central Andes that uses faunal remains to develop local isotopic baselines, reconstruct resource exploitation, and provide insight into dietary variation. Bone collagen stable carbon (δ13C) and nitrogen (δ15N) isotopes are used …

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Development Of A Non-Human Primate Model For Staphylococcus Aureus Nasal Carriage, Amanda Lasseter Jan 2018

Development Of A Non-Human Primate Model For Staphylococcus Aureus Nasal Carriage, Amanda Lasseter

Electronic Theses and Dissertations

Staphylococcus aureus nasal carriage (SANC) is largely asymptomatic, but presents a risk of autoinfection and dissemination to new immunocompromised hosts. SA disease states range from mild cutaneous infections to life-threatening bacteremia. Historically utilized rodent models do not naturally carry SA in the nose, are insufficient in longitudinal SANC experimentation, and lack immune factors that are vital in human clearance of SA. The nasal passages of non-human primates are similar anatomically and histologically, and reproductive mucosal studies have shown similar immune responses to pathogens and human-relevant microbial profiles. Seventeen captive pigtailed macaques (Macaca nemestrina) were found to naturally carry SA in …

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Machine Learning Methods For Flow Cytometry Analysis And Visualization, Emily Sassano Jan 2018

Machine Learning Methods For Flow Cytometry Analysis And Visualization, Emily Sassano

Electronic Theses and Dissertations

Flow cytometry is a popular analytical cell-biology instrument that uses specific wavelengths of light to profile heterogeneous populations of cells at the individual level. Current cytometers have the capability of analyzing up to 20 parameters on over a million cells, but despite the complexity of these datasets, a typical workflow relies on subjective labor-intensive manual sequential analysis. The research presented in this dissertation provides two machine learning methods to increase the objectivity, efficiency, and discovery in flow cytometry data analysis. The first, a supervised learning method, utilizes previously analyzed data to evaluate new flow cytometry files containing similar parameters. The …

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The Evolution Of Peristenus (Hymenoptera: Braconidae): Taxonomy, Phylogenetics And Ecological Speciation, Yuanmeng Zhang Jan 2018

The Evolution Of Peristenus (Hymenoptera: Braconidae): Taxonomy, Phylogenetics And Ecological Speciation, Yuanmeng Zhang

Electronic Theses and Dissertations

Parasitoid wasps are ecologically and economically important as biological control agents. However, little is known about the diversity, distribution and biology of most hymenopteran parasitoids due to their small size, morphological conservatism, and complex life styles. The focus of my PhD research was to investigate the evolution and speciation of euphorine braconid wasps, using a combination of multilocus phylogenetics and population genomic techniques combined with traditional taxonomy. The three data chapters of my dissertation are divided into different taxonomic ranks of euphorine braconids, focusing on genera, species, and populations. For chapter 2, I built a multilocus phylogeny of the tribe …

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Stem Academic Engagement In Young Children With Autism: A Single Case Design Study, Yixuan Ji Jan 2018

Stem Academic Engagement In Young Children With Autism: A Single Case Design Study, Yixuan Ji

Electronic Theses and Dissertations

The researcher examined the academic engagement in Circle Time activities and STEM (science, technology, engineering, and mathematics) activities for three young children with autism spectrum disorders (ASD) who attended a large Orange County Public School, enrolled in an ASD preschool classroom. Given the increasing number of children diagnosed with ASD each year and many STEM job opportunities for individuals with ASD, it is becoming important to know how young children with ASD learn and engage in STEM activities. Strengths of individuals with ASD in the STEM field have been reported in several research studies (Chen & Weko, 2009; Kirchner, Ruch …

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Revisiting The Postclassic Burials At Lamanai, Belize: A Second Look At The Unique Ventrally Placed, Legs Flexed Burials., Victoria Izzo Jan 2018

Revisiting The Postclassic Burials At Lamanai, Belize: A Second Look At The Unique Ventrally Placed, Legs Flexed Burials., Victoria Izzo

Electronic Theses and Dissertations

Analysis of unique mortuary patterns is often used to evaluate the social lives of the deceased and also those of the living who placed them there. The Ventrally Placed, Legs Flexed (VPLF) burials at the site of Lamanai in Belize, dating to the Postclassic period (1000 - 1544), have been recorded as a Maya mortuary pattern since the late 1970's. While many researchers have analyzed these skeletal remains, comprehensive and cumulative individual analysis of the VPLF individuals from Lamanai has not been conducted. In this study, I will argue that the VPLF individuals in this study were local to Lamanai, …

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Testing The Capability Of Close-Range Photogrammetry To Document Outdoor Forensic Scenes With Skeletal Remains Using Mock Scenarios, Kevin Gidusko Jan 2018

Testing The Capability Of Close-Range Photogrammetry To Document Outdoor Forensic Scenes With Skeletal Remains Using Mock Scenarios, Kevin Gidusko

Electronic Theses and Dissertations

More rigorous methodological protocols are needed to document outdoor forensic scenes containing skeletal remains. However, law enforcement protocols rarely provide specific guidelines for processing these scenes. Regardless, the need to preserve contextual information at crime scenes is of paramount importance and it is worth exploring new technological applications that will allow for better documentation. Close-range photogrammetry (CRP) is one option for outdoor scene documentation, more prominently utilized in archaeological contexts, that may provide forensic archaeologists with a tool to better document these scenarios via 3D modeling. To test the efficacy of CRP as documentation tool three mock scenarios representing common …

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Embryonic Stem Cell Derived Exosomes Enhance Cardiac Stem Cell Differentiation Into Heart Cells, Jamillah Hammond Jan 2018

Embryonic Stem Cell Derived Exosomes Enhance Cardiac Stem Cell Differentiation Into Heart Cells, Jamillah Hammond

Electronic Theses and Dissertations

Transplantation of embryonic stem (ES) cells into the ischemic and infarcted heart has proven to repopulate cardiac cell populations, attenuate structural cardiac remodeling, and rescue cardiac function. Unfortunately, the pluripotency of ES cells increases risk of teratoma formation in vivo. Exosomes, smaller in comparison to ES cells, are cell free carriers of miRNA, proteins, and lipids, and do not suggest risk of teratoma formation. Exosomes have been proposed to mediate and attenuate regeneration following myocardial infarction (MI), however, the role of exosomes derived from ES cells (ES-Exo) in activating resident cardiac stem cells (CSCs) to undergo cardiac differentiation is not …

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Evolution And Distribution Of Phenotypic Diversity In The Venom Of Mojave Rattlesnakes (Crotalus Scutulatus), Jason Strickland Jan 2018

Evolution And Distribution Of Phenotypic Diversity In The Venom Of Mojave Rattlesnakes (Crotalus Scutulatus), Jason Strickland

Electronic Theses and Dissertations

Intraspecific phenotype diversity allows for local adaption and the ability for species to respond to changing environmental conditions, enhancing survivability. Phenotypic variation could be stochastic, genetically based, and/or the result of different environmental conditions. Mojave Rattlesnakes, Crotalus scutulatus, are known to have high intraspecific venom variation, but the geographic extent of the variation and factors influencing venom evolution are poorly understood. Three primary venom types have been described in this species based on the presence (Type A) or absence (Type B) of a neurotoxic phospholipase A2 called Mojave toxin and an inverse relationship with the presence of snake venom metalloproteinases …

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My Plate, Your Food: Foodways Of International Students In Us' Colleges And Universities, Boniface Noyongoyo Jan 2018

My Plate, Your Food: Foodways Of International Students In Us' Colleges And Universities, Boniface Noyongoyo

Electronic Theses and Dissertations

Research shows that the world is now more globalized than ever. In the education sector, students' movements have increased from the global South to the North as they look for a better tomorrow. Hence, international students in the US are from almost all countries around the world. The current study examines the changes in the foodways of international students since their arrival in the US The analysis is based on more than 260 surveys and 17 interviews of international students enrolled in US colleges and universities. The results from online self-administered surveys showed that international students' eating habit changes are …

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A Landscape Of Death: A Comparison Of Non-Adult To Adult Burials At The Late Bronze Age Site Of Tell El-Far'ah (South), Rebecca Reeves Jan 2018

A Landscape Of Death: A Comparison Of Non-Adult To Adult Burials At The Late Bronze Age Site Of Tell El-Far'ah (South), Rebecca Reeves

Electronic Theses and Dissertations

This study aims to determine whether there are any differences in the burial practices for non-adults and adults at the Late Bronze Age site of Tell el-Far'ah (South) in modern day Israel. The archaeology of childhood together with various methods of analyses, including geospatial and statistical techniques, were utilized to address the main research question focused on the spatial differences and relationships between non-adult and adult burials. There are missing children in the archeological record. Tell el-Far'ah (South) is an example of this phenomenon. Reasons vary from taphonomy to potential infanticide. Based on the currently available data, it seems that …

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Making An Impression: A Formal Analysis Of The Contextual And Iconographic Characteristics Of Ancient Mexican Ceramic Stamps, Elizabeth Rose Lyon Peabody Jan 2018

Making An Impression: A Formal Analysis Of The Contextual And Iconographic Characteristics Of Ancient Mexican Ceramic Stamps, Elizabeth Rose Lyon Peabody

Electronic Theses and Dissertations

Ceramic stamps are a rare, yet widely distributed, artifact class within ancient Mexico. However, there has only been limited scholarly research on these objects and much current research is minimally supported. Depicting a wide range of iconography, including metaphysical, floral, and faunal designs, the function and meaning of these stamps, also known as estampias, pintaderas, and sellos, in ancient Mexican life remain an archaeological mystery. This paper examines the contextual, chronological, and iconographic characteristics of ancient Mexican ceramic stamps as well as the distributional trends of those characteristics. This study is comprised of 83 stamps of varying design that date …

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In Situ Treatment Systems For Remediation Of Polychlorinated Biphenyl-Contaminated Building Materials, Adibah Almutairi Jan 2018

In Situ Treatment Systems For Remediation Of Polychlorinated Biphenyl-Contaminated Building Materials, Adibah Almutairi

Electronic Theses and Dissertations

Polychlorinated Biphenyls (PCBs) are a family of synthetic organohalides comprising 209 congeners which were used historically as additives in paint and caulking materials over a span of many years. Even though the production of PCBs in the USA has been banned since the late 1970s, their former prevalence and widespread use means many structures are still coated with PCB-laden paints. In addition, the presence of PCBs in elastic sealants has resulted in transport of PCBs into concrete structures and has caused soil contamination around buildings. PCB-contaminated building materials have become a significant concern for the environment and building occupants due …

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Light Scattering Property Of Gold Nanoparticles With Applications To Biomolecule Detection And Analysis, Tianyu Zheng Jan 2018

Light Scattering Property Of Gold Nanoparticles With Applications To Biomolecule Detection And Analysis, Tianyu Zheng

Electronic Theses and Dissertations

Gold nanoparticles (AuNPs) have unique optical and chemical properties. Dynamic light scattering (DLS) is an analytical tool used routinely for nanoparticle size measurement. The combined use of AuNPs and DLS has led to a novel analytical assay technology called D2Dx (from diameter to diagnostics). Herein, my dissertation highlights the extended use of D2Dx for biomolecule detection and analysis. Under this general theme, Chapter 1 provides some background information of AuNPs, DLS, the principle of D2Dx technique and its potential applications. Chapter 2 summarizes a study on the effect of AuNP concentrations and laser power on the hydrodynamic size measurement of …

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Golden Years, Sienna Malik Jan 2018

Golden Years, Sienna Malik

Electronic Theses and Dissertations

Golden Years is the culmination of the author's studies in Creative Nonfiction writing, with attention to hybrid forms of the genre, combined with her professional background in screenwriting, and research interests in nostalgia and cultural preservation in the modern age. In the collection of essays, the author blends established forms of Creative Nonfiction, such as the braided essay, with literary conventions borrowed from other forms of written communication, such as the screenplay ("You Must Remember This," "Driver's Seat"), the cookbook ("Tip of my Tongue"), a travel guide ("A Trolley Runs Through It") and fabulist fiction ("Selkie on the Shore"). Through …

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Influence Of Chitosan-Alginate Scaffold Stiffness On Bone Marrow Stromal Cell Differentiation, Isabel Arias Ponce Jan 2018

Influence Of Chitosan-Alginate Scaffold Stiffness On Bone Marrow Stromal Cell Differentiation, Isabel Arias Ponce

Electronic Theses and Dissertations

Tissue grafts are the gold standard for replacing large volume tissue defects. Yet, they present several risks, including infection, low functional outcomes, and reduced graft integrity. Tissue engineering (TE) combines cells and biomaterial scaffolds to foster tissue growth and remodeling. Bone marrow stromal cells (BMSCs) have been shown to respond to the stiffness of their microenvironment, resulting in differentiation into different lineages. 3D porous chitosan-alginate (CA) scaffolds have been previously demonstrated for bone TE with osteoblasts and BMSCs; however, only a single scaffold composition (4 wt%) was studied. Three CA scaffold compositions (2, 4, 6 wt% CA) were produced. Scanning …

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Cell Printing: An Effective Advancement For The Creation Of Um Size Patterns For Integration Into Microfluidic Biomems Devices, Megan Aubin Jan 2018

Cell Printing: An Effective Advancement For The Creation Of Um Size Patterns For Integration Into Microfluidic Biomems Devices, Megan Aubin

Electronic Theses and Dissertations

The Body-on-a-Chip (BoaC) is a microfluidic BioMEMs project that aims to replicate major organs of the human body on a chip, providing an in vitro drug testing platform without the need to resort to animal model testing. Using a human model also provides significantly more accurate drug response data, and may even open the door to personalized drug treatments. Microelectrode arrays integrated with human neuronal or human cardiac cells that are positioned on the electrodes are essential components for BoaC systems. Fabricating these substrates relies heavily on chemically patterned surfaces to control the orientation and growth of the cells. Currently, …

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Eye Movements And Spatial Ability: Influences On Thinking During Analogical Problem Solving, Bradford Schroeder Jan 2018

Eye Movements And Spatial Ability: Influences On Thinking During Analogical Problem Solving, Bradford Schroeder

Electronic Theses and Dissertations

Classic studies have examined the factors that influence the way in which people can solve difficult "insight" problems, which require creative solutions. Recent research has shown that guiding one's eye movements in a pattern spatially congruent with the solution improves the likelihood of formulating a spatial solution. The authors in this line of research argued that guiding eye movements in a pattern spatially equivalent to the solution of the problem yields an embodied cognitive benefit that aids problem solving. Specifically, guiding eye movements leads to the generation of a mental representation containing perceptual information that helps a problem solver mentally …

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Enhancing Cognitive Algorithms For Optimal Performance Of Adaptive Networks, Hector Lugo-Cordero Jan 2018

Enhancing Cognitive Algorithms For Optimal Performance Of Adaptive Networks, Hector Lugo-Cordero

Electronic Theses and Dissertations

This research proposes to enhance some Evolutionary Algorithms in order to obtain optimal and adaptive network configurations. Due to the richness in technologies, low cost, and application usages, we consider Heterogeneous Wireless Mesh Networks. In particular, we evaluate the domains of Network Deployment, Smart Grids/Homes, and Intrusion Detection Systems. Having an adaptive network as one of the goals, we consider a robust noise tolerant methodology that can quickly react to changes in the environment. Furthermore, the diversity of the performance objectives considered (e.g., power, coverage, anonymity, etc.) makes the objective function non-continuous and therefore not have a derivative. For these …

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Biomechanical Models Of Human Upper And Tracheal Airway Functionality, Don Nadun Kuruppumullage Jan 2018

Biomechanical Models Of Human Upper And Tracheal Airway Functionality, Don Nadun Kuruppumullage

Electronic Theses and Dissertations

The respiratory tract, in other words, the airway, is the primary airflow path for several physiological activities such as coughing, breathing, and sneezing. Diseases can impact airway functionality through various means including cancer of the head and neck, Neurological disorders such as Parkinson's disease, and sleep disorders and all of which are considered in this study. In this dissertation, numerical modeling techniques were used to simulate three distinct airway diseases: a weak cough leading to aspiration, upper airway patency in obstructive sleep apnea, and tongue cancer in swallow disorders. The work described in this dissertation, therefore, divided into three biomechanical …

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Relating First-Person And Third-Person Vision, Shervin Ardeshir Behrostaghi Jan 2018

Relating First-Person And Third-Person Vision, Shervin Ardeshir Behrostaghi

Electronic Theses and Dissertations

Thanks to the availability and increasing popularity of wearable devices such as GoPro cameras, smart phones and glasses, we have access to a plethora of videos captured from the first person (egocentric) perspective. Capturing the world from the perspective of one's self, egocentric videos bear characteristics distinct from the more traditional third-person (exocentric) videos. In many computer vision tasks (e.g. identification, action recognition, face recognition, pose estimation, etc.), the human actors are the main focus. Hence, detecting, localizing, and recognizing the human actor is often incorporated as a vital component. In an egocentric video however, the person behind the camera …

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A Methodology On Weapon Combat Effectiveness Analytics Using Big Data And Live, Virtual, Or/And Constructive Simulations, Won Jung Ii Jan 2018

A Methodology On Weapon Combat Effectiveness Analytics Using Big Data And Live, Virtual, Or/And Constructive Simulations, Won Jung Ii

Electronic Theses and Dissertations

The Weapon Combat Effectiveness (WCE) analytics is very expensive, time-consuming, and dangerous in the real world because we have to create data from the real operations with a lot of people and weapons in the actual environment. The Modeling and Simulation (M&S) of many techniques is used for overcoming these limitations. Although the era of big data has emerged and achieved a great deal of success in a variety of fields, most WCE research using the Defense Modeling and Simulation (DM&S) techniques were studied without the help of big data technologies and techniques. The existing research has not considered various …

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Environmental Physical-Virtual Interaction To Improve Social Presence With A Virtual Human In Mixed Reality, Kangsoo Kim Jan 2018

Environmental Physical-Virtual Interaction To Improve Social Presence With A Virtual Human In Mixed Reality, Kangsoo Kim

Electronic Theses and Dissertations

Interactive Virtual Humans (VHs) are increasingly used to replace or assist real humans in various applications, e.g., military and medical training, education, or entertainment. In most VH research, the perceived social presence with a VH, which denotes the user's sense of being socially connected or co-located with the VH, is the decisive factor in evaluating the social influence of the VH—a phenomenon where human users' emotions, opinions, or behaviors are affected by the VH. The purpose of this dissertation is to develop new knowledge about how characteristics and behaviors of a VH in a Mixed Reality (MR) environment can affect …

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Bio-Inspired Visual Servo Control Of A Picking Mechanism In An Agricultural Ground Robot, Sinem Gozde Defterli Jan 2018

Bio-Inspired Visual Servo Control Of A Picking Mechanism In An Agricultural Ground Robot, Sinem Gozde Defterli

Electronic Theses and Dissertations

For a recently constructed disease detection agricultural ground robot, the segregation of unhealthy leaves from strawberry plants is a major task of the robot's manipulation subsystem in field operations. In this dissertation, the motion planning of a custom-designed picking mechanism in the ground robot's subsystem is studied in two sections. First, a set of analytical, suboptimal semi-analytical and numerical algorithms are studied to solve the inverse kinematics problem of the handling mechanism in firm circumstances. These premeditated approaches are built on the computation of the joint variables by an identified 3D position data of the target leaf only. The outcomes …

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Evaluating Hydrologic Fluxes Through Stormwater Treatment Systems: Implication To Freshwater Springs In A Karst Environment, Nyle Rice Jan 2018

Evaluating Hydrologic Fluxes Through Stormwater Treatment Systems: Implication To Freshwater Springs In A Karst Environment, Nyle Rice

Electronic Theses and Dissertations

In recent years, concentrations of nutrients such as nitrogen and phosphorus have increased in surface and groundwater resources, due in part to non-point source pollution associated with stormwater runoff. The elevated nutrient concentrations found in stormwater runoff have prompted the design of best management practices (BMP's) to mitigate the problem. The overall objective within this thesis is to analyze the performance of innovative surface BMPs and investigate connections between the BMPs and groundwater flows to freshwater springs within a karst environment. The performance of two stormwater BMPs, blanket filters and vertical reactors containing Bio-sorption Activated Media (BAM), are assessed in …

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Analysis Of Driver Behavior Modeling In Connected Vehicle Safety Systems Through High Fidelity Simulation, Ahura Jami Jan 2018

Analysis Of Driver Behavior Modeling In Connected Vehicle Safety Systems Through High Fidelity Simulation, Ahura Jami

Electronic Theses and Dissertations

A critical aspect of connected vehicle safety analysis is understanding the impact of human behavior on the overall performance of the safety system. Given the variation in human driving behavior and the expectancy for high levels of performance, it is crucial for these systems to be flexible to various driving characteristics. However, design, testing, and evaluation of these active safety systems remain a challenging task, exacerbated by the lack of behavioral data and practical test platforms. Additionally, the need for the operation of these systems in critical and dangerous situations makes the burden of their evaluation very costly and time-consuming. …

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Acute And Chronic Vascular Responses To Blood Flow Restriction In The Upper Body, J. Grant Mouser Jan 2018

Acute And Chronic Vascular Responses To Blood Flow Restriction In The Upper Body, J. Grant Mouser

Electronic Theses and Dissertations

Blood flow restriction (BFR) with low load exercise increases muscular size and strength. Little is known of vascular adaptations to this training modality, and nothing was known at very low loads. These studies examined cardiovascular responses to high load (70% of one-repetition maximum (1RM)) and very low load (15%1RM) exercise, alone or at two levels of BFR. Study 1: Participants performed unilateral biceps curls using either 15%1RM with no BFR (15/00), 40% of arterial occlusion pressure (AOP) (15/40), or 80%AOP (15/80), or 70%1RM (70/00). Systolic and diastolic blood pressure (SBP, DBP) and blood flow (BF) were measured in the arms …

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Searching Through Debris: A Mass Analysis From The Carter Robinson Mound Site In Lee County, Virginia, Robert Capps Jan 2018

Searching Through Debris: A Mass Analysis From The Carter Robinson Mound Site In Lee County, Virginia, Robert Capps

Electronic Theses and Dissertations

The Mississippian period is one of the most widely studied periods in the prehistoric Southeast, but there are areas such as the Mississippian frontier that have not been explored in great detail. Carter Robinson is a Mississippian chiefdom located on the frontier in southwest Virginia during the thirteenth and fourteenth centuries. To better understand the people living at this site a mass analysis was conducted to examine the lithic debris left behind by the people living there. The purpose of this thesis is to identify the degree of tool production at Carter Robinson and to identify areas of tool production, …

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