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Full-Text Articles in Entire DC Network
Points Of Intersection Finding Connections Between Design, Science And Math, Christopher Kohlhagen
Points Of Intersection Finding Connections Between Design, Science And Math, Christopher Kohlhagen
Electronic Theses and Dissertations 2010 - 2019
Contemporary educational trends have created a false dichotomy between the arts and science. The will to make STEM subjects the focus of K-12 education, ignores both a shared history and the potential for greater learning in a shared future.The intention of Points of Intersection is to demonstrate that design, science and math intersect in their concepts, practices and history. In the past, these disciplines were explored and studied together and benefited from each other. By exploring what design and science have in common and the points where they intersect, we can see the relevance and importance of art and design …
Propulsive Performance And Maneuver Control Of Undulatory Ribbon Fin Propulsion Using Bio-Inspired Robotic Systems, Hanlin Liu
Electronic Theses and Dissertations 2010 - 2019
Undulatory ribbon- n-based propulsion is an appealing propulsion mechanism due to its rich locomotor capabilities that can improve the propulsive performance and maneuverability of underwater vehicles. For instance, the swimming mechanics of weakly electric black ghost knife sh (Apteronotus albifrons) is of great interest to study because of their high swimming e ciency at low speeds and extraordinary agility such as rapid reversal swimming, hovering in presence of water disturbance, rolling and vertical swimming. In this thesis work, to facilitate our understanding on the exible undulatory ribbon n propulsion, we have four research motivations. The rst objective is to study …
Public Perception Of Health Risks Related To Climate Change In Broward County, Florida, Jeanmarie A Steckler Buck
Public Perception Of Health Risks Related To Climate Change In Broward County, Florida, Jeanmarie A Steckler Buck
Electronic Theses and Dissertations 2010 - 2019
Scholars agree that global climate change is a major threat to the physical environment, affecting all aspects of life on the planet. However, the general public do not feel that climate change is a major risk or threat, especially to humans. It is important to understand the public’s perception and opinions of climate change as it affects and influences the creation and passing of climate change adaptation and mitigation policies. Specifically, little is known about public perceptions in regards to the greater health risk imposed by global climate change. This study examines the public's perception of health risks related to …
Population Structure And Gene Expression Of The Coral Montastraea Cavernosa In The Northern Florida Reef Tract, Danielle Dodge
Population Structure And Gene Expression Of The Coral Montastraea Cavernosa In The Northern Florida Reef Tract, Danielle Dodge
Electronic Theses and Dissertations 2010 - 2019
Coral reefs on Florida’s Reef Tract (FRT) are susceptible to many anthropogenic influences including controlled freshwater discharges and agricultural runoff as well as high natural environmental variability from seasonal rainfall, runoff and upwelling. To better understand coral population structure and responses to sublethal stressors, populations of the scleractinian coral Montastraea cavernosa in the northern FRT were examined using a combination of genomic and transcriptomic techniques. Microsatellite genetic markers identified high local retention among sites and a slight southward gene flow. An in-situ temporal gene expression analysis utilizing a tag-based sequencing transcriptomic approach was used to analyze baseline coral health at …
Quasi-Local Energy Of Rotating Black Hole Spacetimes And Isometric Embeddings Of 2-Surfaces In Euclidean 3-Space, Shannon Ray
Quasi-Local Energy Of Rotating Black Hole Spacetimes And Isometric Embeddings Of 2-Surfaces In Euclidean 3-Space, Shannon Ray
Electronic Theses and Dissertations 2010 - 2019
One of the most fundamental problems in classical general relativity is the measure of e↵ective mass of a pure gravitational field. The principle of equivalence prohibits a purely local measure of this mass. This thesis critically examines the most recent quasi-local measure by Wang and Yau for a maximally rotating black hole spacetime. In particular, it examines a family of spacelike 2-surfaces with constant radii in Boyer-Lindquist coordinates. There exists a critical radius r* below which, the Wang and Yau quasi-local energy has yet to be explored. In this region, the results of this thesis indicate that the Wang and …
Relationship Between Anthropometric Measurements And Average Concentric Velocity In The Back Squat, Daniel M. Cooke
Relationship Between Anthropometric Measurements And Average Concentric Velocity In The Back Squat, Daniel M. Cooke
Electronic Theses and Dissertations 2010 - 2019
The purpose of the present study was to investigate if any relationship exists between anthropometric measurements with average concentric velocity (ACV) at various intensities in the back squat and the number of repetitions able to be performed during a set to volitional fatigue at 70% of one-repetition maximum (1RM). It was hypothesised that short femurs and total height would be related to slower ACVs and lower total number of repetitions performed. 58 resistance trained subjects were recruited and attended one day of data collection. Subjects performed 1RM testing of the back squat followed by two single repetition sets at 30-90% …
Relationships Between Diet And Physical Activity Lifestyle Factors And Body Composition, Waist Circumference, And Body Mass Index In Postmenopausal Women, Mary Jansen
Electronic Theses and Dissertations 2010 - 2019
PURPOSE: The purpose of this study was to compare relationships between dietary and physical activity (PA) behaviors and body composition and body fat distribution, as measured by percent body fat (BF%), waist-to-height ratio (WHt), waistto- hip ratio (WHp) and body mass index (BMI) in post-menopausal women (Post), with the same relationships in pre-menopausal women (Pre). METHODS: Ninety-two subjects (n = 48 Post; n = 44 Pre) were measured for height, weight, waist and hip circumferences and skinfold thicknesses. Dietary content was obtained from a Diet History Questionnaire (DHQ II); PA was estimated from responses to the International Physical Activity Questionnaire …
Reclaiming Wonder, Ingrid M. Barreneche
Reclaiming Wonder, Ingrid M. Barreneche
Electronic Theses and Dissertations 2010 - 2019
I believe art can offer an antidote to our numbness and rekindle a sense of childlike wonder. Reclaiming Wonder is an installation in which I aim to explore the possibility of evoking the curiosity of childhood in the viewer’s mind and transporting him or her into a dreamlike atmosphere to wander about in wonder through the use of the senses of sight, touch, and hearing.
Science Comprehension Vs. Cultural Cognition As Predictors Of Climate Change Risk Perception, Elyse A. Steiner
Science Comprehension Vs. Cultural Cognition As Predictors Of Climate Change Risk Perception, Elyse A. Steiner
Electronic Theses and Dissertations 2010 - 2019
This study identified factors that affect climate change risk perception in a community college class. The purpose of this research was to determine if students were more influenced by cultural cognition (political affiliation) or science comprehension. Students in an undergraduate level environmental science and biology class were evaluated, using an online survey, for science comprehension level, political affiliation and risk perception at the beginning and end of each course. Data were analyzed to determine improved scientific literacy and any variation in risk perception. The research found that science comprehension did not contribute significantly to increased risk perception and that political …
Relationship Between Psychological Factors And Acute Strength Task Performance, Michael H. Haischer
Relationship Between Psychological Factors And Acute Strength Task Performance, Michael H. Haischer
Electronic Theses and Dissertations 2010 - 2019
The purpose of this research was to investigate if various psychological wellbeing assessments can predict maximal strength performance and self-scored rating of perceived exertion (RPE) in the back squat. Fifty-eight resistance-trained males and females were recruited, and reported to the laboratory on one day. Subjects completed eight different scales and questionnaires before completing one-repetition maximum (1RM) testing of the squat, followed by two single-repetition sets at 30%, 40%, 50%, 60%, 70%, 80%, and 90% of 1RM, and a set to volitional fatigue at 70% of 1RM. Cognitive anxiety and hypersomnia were found to be positive and negative predictors (p<0.05), respectively, of 1RM performance. Further, self-confidence, grit, and perceived recovery status were significant negative predictors of RPE (p<0.05). Finally, PRS was discovered to be a positive predictor of subject-reported 1RM self-efficacy (b=0.39, t=3.14, p<0.01, R2=0.15).
Resistance Is Never Futile: Un-Sporting Surfing As Radical Female Behavior, Katherine E. Schipper
Resistance Is Never Futile: Un-Sporting Surfing As Radical Female Behavior, Katherine E. Schipper
Electronic Theses and Dissertations 2010 - 2019
Using the narrative imagery of Instagram and the cultural narrative of the Olympics, I explore the role of agency and autonomy in modern sport with a focus on the commercial and institutional arms of surfing. This project is an attempt to evaluate visual and cultural narrative from the perspective of a literary scholar and to root theory and philosophy in issues that go beyond scholarship and academics. In chapter one, I use sports sociologists Jennifer Hargreaves and Krista Comer as well as Jean Kilbourne and Rosalind Gill to illuminate and explore two surf-centric Instagram accounts, both of which imagine a …
Secure Communication By Coherence Modulation At The Photon Counting Level, Abdellatif Boughanmi
Secure Communication By Coherence Modulation At The Photon Counting Level, Abdellatif Boughanmi
Electronic Theses and Dissertations 2010 - 2019
Secure communication is a topic of great importance. The goal of our research reported here is to develop a scheme of secure communication system using coherence modulation at the photon counting level. When operated at the photon counting level, coherence modulation can provide quantifiably secure binary transmission between two entities, security being based on the nonclonability of photons. The objectives of the research are as follows: Show that interferometer-based coherence modulation can provide physics guaranteed secure binary transmission where each bit is associated with a countable number of photons. Review the operation of conventional high-light-level coherence modulation communication and then …
Self-Organization Of Object-Level Visual Representations Via Enforcement Of Structured Sparsity In Deep Neural Networks, Daniel C Jr Lacombe
Self-Organization Of Object-Level Visual Representations Via Enforcement Of Structured Sparsity In Deep Neural Networks, Daniel C Jr Lacombe
Electronic Theses and Dissertations 2010 - 2019
A hypothesis for the self-organization of receptive fields throughout the hierarchy of biological vision is empirically tested using simulations of deep artificial neural networks. Results from many fields for topographic organization of receptive fields throughout the visual hierarchy remain disconnected. Although extensive simulation research has been done to model topographic organization in early visual areas, little to no research has investigated such organization in higher visual areas. We propose that parsimonious structured sparsity principles, that permit the learning of topographic receptive fields in simulated visual areas, are sufficient for the emergence of a semantic topology in object-level representations of a …
Site Fidelity Assessment Of Atlantic Bottlenose Dolphins (Tursiops Truncatus) Following Large-Scale Emigration Of Sympatric Atlantic Spotted Dolphins (Stenella Frontalis) In The Bahamas, Sommer L. Kuhn
Electronic Theses and Dissertations 2010 - 2019
Two sympatric species of dolphins (Atlantic spotted dolphins, Stenella frontalis and Atlantic bottlenose dolphins, Tursiops truncatus) have been long-term residents to Little Bahama Bank. This study assessed whether there was a change in residence patterns or diurnal foraging depths of bottlenose dolphins following a large emigration event in the resident spotted dolphin community on this sandbank. Photo-identification was used to identify individual bottlenose dolphins and compare pooled years before (2010-2012) and after (2013-2015) the spotted dolphin emigration. The identified community size and overall residency of the bottlenose dolphins remained similar, although two bottlenose dolphins emigrated over deep water to the …
Sedentism, Agriculture, And The Neolithic Demographic Transition: Insights From Jōmon Paleodemography, Corey Noxon
Sedentism, Agriculture, And The Neolithic Demographic Transition: Insights From Jōmon Paleodemography, Corey Noxon
Electronic Theses and Dissertations 2010 - 2019
A paleodemographic analysis was conducted using skeletal data from Jōmon period sites in Japan. 15P5 ratios were produced as proxy birth rate values for sites throughout the Jōmon period. Previous studies based on numbers of residential sites indicated a substantial population increase in the Kantō and Chūbu regions in central Japan, climaxing during the Middle Jōmon period, followed by an equally dramatic population decrease, somewhat resembling changes that occurred during a Neolithic Demographic Transition (NDT). The Jōmon are viewed as a relatively sedentary, non-agricultural group, and provided an opportunity to attempt to separate the factors of sedentism and agriculture as …
Smart Broadcast Protocol Design For Vehicular Ad Hoc Networks, Elnaz Limouchi
Smart Broadcast Protocol Design For Vehicular Ad Hoc Networks, Elnaz Limouchi
Electronic Theses and Dissertations 2010 - 2019
Multi-hop broadcast is one of the main approaches to disseminate data in VANET. Therefore, it is important to design a reliable multi-hop broadcast protocol, which satis es both reachability and bandwidth consumption requirements. In a dense network, where vehicles are very close to each other, the number of vehicles needed to rebroadcast the message should be small enough to avoid a broad- cast storm, but large enough to meet the reachability requirement. If the network is sparse, a higher number of vehicles is needed to retransmit to provide a higher reachability level. So, it is obvious that there is a …
Surrealism 2.0/Contemporary Games Analyzing Contemporary Games As A Re-Emergence Of Surrealism, Demetrius Dukes
Surrealism 2.0/Contemporary Games Analyzing Contemporary Games As A Re-Emergence Of Surrealism, Demetrius Dukes
Electronic Theses and Dissertations 2010 - 2019
Historically, Surrealism is defined as a literary and artistic movement which developed from Dadaism in the early twentieth century. Many artistic and literary historians assess that the lifespan of Surrealism did not persist beyond the 1960’s – that in fact, after notable surrealist such as René Magritte, Man Ray, Max Ernst and Salvador Dali challenged the limited cultural assumption of rationalism, the pursuit to explore and visualize the subconscious faded from artistic ambition. However, the purpose of this paper is to propose an alternative notion that suggests that digital interactive mediums – such as contemporary games and virtual technologies – …
Statistical And Entropy Considerations For Ultrasound Tissue Characterization, Khrystsina Navumenka
Statistical And Entropy Considerations For Ultrasound Tissue Characterization, Khrystsina Navumenka
Electronic Theses and Dissertations 2010 - 2019
Modern cancerous tumor diagnostics is nearly impossible without invasive methods, such as biopsy, that may require involved surgical procedures. In recent years some work has been done to develop alternative non-invasive methods of medical diagnostics. For this purpose, the data obtained from an ultrasound image of the body crosssection, has been analyzed using statistical models, including Rayleigh, Rice, Nakagami, and K statistical distributions. The homodyned-K (H-K) distribution has been found to be a good statistical tool to analyze the envelope and/or the intensity of backscattered signal in ultrasound tissue characterization. However, its use has usually been limited due to the …
Stress Reactivity In Children Following An Academic Stressor: Associations And Interactions With Intrapersonal Characteristics, Maria L. Corbett
Stress Reactivity In Children Following An Academic Stressor: Associations And Interactions With Intrapersonal Characteristics, Maria L. Corbett
Electronic Theses and Dissertations 2010 - 2019
Previous research has shown that the intrapersonal characteristics (e.g., temperament) of children are associated closely with alterations in the functioning of the hypothalamic-pituitary–adrenal (HPA) stress axis. However, consistently capturing direct associations between these characteristics and stress reactivity of the HPA axis has, at times, yielded disparate findings. Thus, using the Rothbart model of temperament (Rothbart & Derryberry, 1981) as a guide, the main goal of this project was to investigate and identify intrapersonal characteristics that moderate associations between other intrapersonal characteristics of the child and stress reactivity during development (e.g., trait by trait interactions). Additionally, study variables were assessed for …
Survival By Any Means: Race And Gender, Passing And Performance In Octavia Butler’S Parable Of The Sower And Parable Of The Talents, Micah R. Moreno
Survival By Any Means: Race And Gender, Passing And Performance In Octavia Butler’S Parable Of The Sower And Parable Of The Talents, Micah R. Moreno
Electronic Theses and Dissertations 2010 - 2019
This project focuses on race and gender in the works of author Octavia Butler. The primary texts analyzed are Parable of the Sower and Parable of the Talents. In these novels, Butler alludes to slavery in antebellum America by drawing strong parallels between the roles race and gender played in the survival of the escaped slaves of America’s past and the role they play in the survival of the main character of Butler’s apocalyptic future. The themes of race and gender frequently intersect and maintain an important role throughout the novels. I argue that, by reading Butler’s novels within this …
The Comparison Of High-Intensity Interval Exercise Vs. Continuous Moderate Exercise On C1q/Tnf-Related Protein-9 Expression And Flow-Mediated Vasodilation, Brandon G. Fico
Electronic Theses and Dissertations 2010 - 2019
The primary purpose of this study was to investigate the effect of acute high-intensity interval exercise (HIIE) vs. continuous moderate-intensity exercise (CME) on serum CTRP9 and brachial FMD responses in obese and normal-weight subjects. Sixteen participants (9 obese and 7 normal-weight) completed HIIE and CME in a randomized fashion. Our results showed a significant time effect for CTRP9 immediately following acute HIIE and CME in both groups. Furthermore, both significant treatment by time and group by time interactions for FMD were observed following both exercise protocols, with greater CME-induced FMD response in obese subjects than normal-weight subjects. Additionally, a positive …
The Circular Restricted Four Body Problem Is Non-Integrable: A Computer Assisted Proof, Shane Kepley
The Circular Restricted Four Body Problem Is Non-Integrable: A Computer Assisted Proof, Shane Kepley
Electronic Theses and Dissertations 2010 - 2019
Gravitational N-body problems are central in classical mathematical physics. Studying their long time behavior raises subtle questions about the interplay between regular and irregular motions and the boundary between integrable and chaotic dynamics. Over the last hundred years, concepts from the qualitative theory of dynamical systems such as stable/unstable manifolds, homoclinic and heteroclinic tangles, KAM theory, and whiskered invariant tori, have come to play an increasingly important role in the discussion. In the last fty years the study of numerical methods for computing invariant objects has matured into a thriving sub-discipline. This growth is driven at least in part by …
Teacher Perceptions Of Technology Integration Professional Development In A 1:1 Chromebook Environment, Eleonora Yankelevich
Teacher Perceptions Of Technology Integration Professional Development In A 1:1 Chromebook Environment, Eleonora Yankelevich
Electronic Theses and Dissertations 2010 - 2019
A variety of computing devices are available in today’s classrooms, but they have not guaranteed the effective integration of technology. Nationally, teachers have ample devices, applications, productivity software, and digital audio and video tools. Despite all this, the literature suggests these tools are not employed to enhance student learning according to best practices. The purpose of this qualitative case study was to describe and understand perceptions of a technology integration professional development (TIPD) experience of elementary teachers at a suburban, independent school. The TIPD was an ongoing, 40-minute class led by a technology specialist, taking place in teachers’ classrooms, engaging …
The Advantages Of Collimator Optimization For Intensity Modulated Radiation Therapy, Brian Doozan
The Advantages Of Collimator Optimization For Intensity Modulated Radiation Therapy, Brian Doozan
Electronic Theses and Dissertations 2010 - 2019
The goal of this study was to improve dosimetry for pelvic, lung, head and neck, and other cancers sites with aspherical planning target volumes (PTV) using a new algorithm for collimator optimization for intensity modulated radiation therapy (IMRT) that minimizes the x-jaw gap (CAX) and the area of the jaws (CAA) for each treatment field. A retroactive study on the effects of collimator optimization of 20 patients was performed by comparing metric results for new collimator optimization techniques in Eclipse version 11.0. Keeping all other parameters equal, multiple plans are created using four collimator techniques: CA0, all fields have collimators …
Technology, Textbooks, And Mathematics: Perceptions Of Online Math Homework From Traditional High School Students Enrolled In Private Schools, Gisselle Gutierrez
Technology, Textbooks, And Mathematics: Perceptions Of Online Math Homework From Traditional High School Students Enrolled In Private Schools, Gisselle Gutierrez
Electronic Theses and Dissertations 2010 - 2019
This research study employed both quantitative and qualitative methodology to explore high school students’ perceptions about online math homework and paper math homework. The purpose of this study was threefold: to understand how high school students perceive online math homework, to determine what aspects of online math homework aid and/or hinder student learning, and to improve the student learning experience with online math homework. Through quantitative analysis, the researcher noted that although not all students learned best with online math homework, nearly every student used the online tools provided when assigned online math homework. Through qualitative analysis, the researcher noted …
The Directionality Of Person-Situation Transactions: Spill-Over Effects Among And Between Situation Experiences And Personality States, Ashley Bell Cooper
The Directionality Of Person-Situation Transactions: Spill-Over Effects Among And Between Situation Experiences And Personality States, Ashley Bell Cooper
Electronic Theses and Dissertations 2010 - 2019
To elucidate temporal sequences among and between person and situation variables, this work examines cross-measurement spill-overs between situation experiences S (on the Situational Eight DIAMONDS characteristics) and personality states P (on the Big Six HEXACO) in experience sampling data in two studies. Multilevel modeling of lagged data at tn-1 and non-lagged data at tn grants the opportunity to examine (a) the stability (P --> P, S --> S), (b) cross-sectional associations (S <--> P), and (c) cross-lagged associations among and between situation experiences and personality states (S --> P, P --> S).
The Effect Of A Heart Failure Nurse Navigator On 30-Day Hospital Readmissions Of Older Adults, Mary Ann M Leavitt
The Effect Of A Heart Failure Nurse Navigator On 30-Day Hospital Readmissions Of Older Adults, Mary Ann M Leavitt
Electronic Theses and Dissertations 2010 - 2019
Across the US, 22% of Medicare patients hospitalized with a diagnosis of heart failure (HF) will be readmitted within 30-days of discharge. There is no one costeffective process identified to help patients transition home and maintain their own selfcare. The aim of this study is to compare readmission rates, HF knowledge, self-care, and quality of life for patients who transition home from the hospital under the care of a Heart Failure Nurse Navigator (HFNN) with patients who receive usual care. The HFNN is a home health RN with specialized training in HF care. The HFNN visited intervention group (IG) participants …
The Effect Of Fluid Flow On Human Sperm Fertility, Kari Rappa
The Effect Of Fluid Flow On Human Sperm Fertility, Kari Rappa
Electronic Theses and Dissertations 2010 - 2019
Current sperm processing methods used in assisted reproductive technologies can cause damage to the sperm cell. New ways that mimic the natural guidance mechanisms present in the female genital tract may offer ways to sort sperm with better fertility parameters. Sperm that respond to these cues may have better over sperm health. Human sperm exhibit positive rheotaxis by orienting and swimming against the fluid released by the female genital tract. At certain flow rates sperm can actively orient and swim against the flow. Sperm retrieved that exhibit positive rheotaxis have higher motility and better morphology than the original semen sample.
The Effect Of Alliance Portfolio Size On Firm Performance Revisited: The Role Of Firm- And Portfolio-Level Contingencies, Barreto Tais Siqueira
The Effect Of Alliance Portfolio Size On Firm Performance Revisited: The Role Of Firm- And Portfolio-Level Contingencies, Barreto Tais Siqueira
Electronic Theses and Dissertations 2010 - 2019
Alliance portfolios, or a firm collection of simultaneous alliances, have become common phenomena particularly in technology industries. These portfolios have been found to have a significant impact on firms’ financial performance. At the same time, there is little consensus regarding the direction of this effect. Findings have shown positive, negative, curvilinear, and non-significant relationships. In this dissertation, I employed an organizational learning perspective to investigate the effect of alliance portfolio size on firm financial performance. Using a sample of 343 firm-year observations in the U.S. software industry, I explored portfolio- and firm-level characteristics as moderators of this relationship. Findings provide …
The Diamonds At Work: Applying The Diamonds Dimensions To Occupations, Steven Bell
The Diamonds At Work: Applying The Diamonds Dimensions To Occupations, Steven Bell
Electronic Theses and Dissertations 2010 - 2019
Just as people can be described by traits, situations can be described by the “Situational Eight” DIAMONDS (Duty, Intellect, Adversity, Mating, pOsitivity, Negativity, Deception, Sociality) (Rauthmann et al., 2014). Based upon the common occurrence of situations in combinations unique to different occupations the current study sets out to (1) map the DIAMONDS dimensions into the workplace and (2) examine the relationships between the DIAMONDS dimensions and other measures of work contexts (Skill, Abilities, Knowledge, etc.). Through the use of a modified version of the S8* (Rauthmann & Sherman, 2014), the DIAMONDS dimensions were correlated with scored responses of either individuals …