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Full-Text Articles in Entire DC Network
Developing Methods For The Estimation Of Stature And Their Use As A Proxy For Health Among The Ancient Chachapoya Of Peru, Armando Anzellini
Developing Methods For The Estimation Of Stature And Their Use As A Proxy For Health Among The Ancient Chachapoya Of Peru, Armando Anzellini
Electronic Theses and Dissertations
Population mean stature and patterns of health are often linked in anthropological studies, yet few studies control for the multifactorial nature of achieving adult standing height. This thesis explores the intersection of health and stature by analyzing the skeletal remains of 161 adult individuals from the archaeological site of Kuelap, in the eastern slopes of the northern Peruvian Andes, and also tests current biometric methods for estimating stature from skeletal remains. This Chachapoya site dates to the Late Intermediate Period (AD 900 – 1470) and Late Horizon (AD 1470 – 1536) and resides in the high altitude sub-tropical forests of …
The Impact Of A Strengths-Based Group Counseling Intervention On Lgbtq+ Young Adult's Coping, Social Support, And Coming Out Growth, Shainna Ali
Electronic Theses and Dissertations
Lesbian, gay, bisexual, transgender, and queer individuals, and those who otherwise identify as a minority in terms of affectional orientation and gender expression identity (LGBTQ+) have a higher rate of mental health concerns than their heterosexual and cisgender counterparts (Meyer, 2003). Young adulthood is a difficult time for individuals who identify as LGBTQ+ as internal identity development processes coincide with stressors from the outside world. The conflict between intrapersonal and interpersonal pressures may evoke a multitude of negative emotions such as anxiety, loneliness, isolation, fear, anger, resentment, shame, guilt, and fear. One difficult task that triggers these depreciating sentiments is …
Exploring Repurposing Across Contexts: How Adolescents' New Literacies Practices Can Inform Understandings About Writing-Related Transfer, Cynthia Mitchell
Exploring Repurposing Across Contexts: How Adolescents' New Literacies Practices Can Inform Understandings About Writing-Related Transfer, Cynthia Mitchell
Electronic Theses and Dissertations
This project examines how middle school students engage in new literacies practices and how they repurpose across contexts. With the use of screencast software and interviews, this project analyzes six case study participants' new literacies practices and the way they use and change ideas and strategies across physical and digital contexts. Drawing from transfer methodology, this project looks at how broadening conceptions of transfer and contexts to include repurposing increases the possibilities for finding transfer in literacies practices. Applying new literacies theory, this project explores how literacies practices that are chronologically and ontologically new (Lankshear & Knobel, 2006) are often …
Patient Violence And Aggression In Non-Institutional Health Care Settings: Predictors Of Reporting By Healthcare Providers, Colleen Campbell
Patient Violence And Aggression In Non-Institutional Health Care Settings: Predictors Of Reporting By Healthcare Providers, Colleen Campbell
Electronic Theses and Dissertations
This dissertation is conducted to examine the factors which contribute to the reporting of incidents of violence or aggression perpetrated by patients against health care providers in non-institutional health care settings. With a theoretical foundation grounded in community science, applying stress theory, broken windows theory and the theory of reasoned action, the following cross sectional study examines the contribution of characteristics of the healthcare provider, characteristics of the patient perpetrator and the form of violence to the providers' reporting or failing to report incidents. A self-administered survey was disseminated to a sample of non-institutional healthcare providers to test the research …
The Preservice Elementary Teacher Affect Scale For Science: A Validation Study, Otis Wilder
The Preservice Elementary Teacher Affect Scale For Science: A Validation Study, Otis Wilder
Electronic Theses and Dissertations
The current study details the creation of a new scale for measuring preservice teachers' positive affect for science, the Preservice Elementary Teacher Affect Scale for Science (PETAS-S). This new instrument is designed specifically to measure the level of positive affect towards the subject of science in preservice elementary teachers. Confirmatory factor analysis reveals the instrument loads on the single factor, positive affect. Reliability is robust, with Cronbach's alpha of .96. Positive affect has shown to predict future levels of engagement in domain specific academic subjects (Ainley & Ainley, 2011) and is expected to aid preservice teachers in understanding the complex …
Reading Comprehension Deficits In Children With Adhd: The Mediating Roles Of Working Memory And Orthographic Conversion, Lauren Friedman
Reading Comprehension Deficits In Children With Adhd: The Mediating Roles Of Working Memory And Orthographic Conversion, Lauren Friedman
Electronic Theses and Dissertations
Reading comprehension deficits in children with ADHD are well-established; however, limited information exists concerning the cognitive mechanisms that contribute to these deficits and the extent to which they interact with one another. The current study examines two broad cognitive processes known to be involved in children's reading comprehension abilities—(a) working memory (i.e., central executive processes [CE], phonological short-term memory [PH STM], and visuospatial short-term memory [VS STM]) and (b) orthographic conversion—to elucidate their unique and interactive contribution to ADHD-related reading comprehension deficits. Thirty-one children with ADHD and 30 typically developing (TD) children aged 8 to 12 years (M = 9.64, …
K-12 Transition Framework For Students With Disabilties, Clydia Delaney
K-12 Transition Framework For Students With Disabilties, Clydia Delaney
Electronic Theses and Dissertations
The problem of practice that this dissertation addressed was the post-secondary transition of students with disabilities, which has garnered national and international attention for decades. This dissertation was completed to inform the educational community regarding the potential for improvement in the post-secondary transition process of students with disabilities. Multiple factors were examined related to helping students with disabilities develop appropriate skills to transition through school into personally successful, post-secondary activities and environments. A pilot study was conducted to inform a potential transition framework. Invitations to participate in an anonymous survey were sent to 741 teachers in the district via email. …
Gesture Assessment Of Teachers In An Immersive Rehearsal Environment, Roghayeh Barmaki
Gesture Assessment Of Teachers In An Immersive Rehearsal Environment, Roghayeh Barmaki
Electronic Theses and Dissertations
Interactive training environments typically include feedback mechanisms designed to help trainees improve their performance through either guided- or self-reflection. When the training system deals with human-to-human communications, as one would find in a teacher, counselor, enterprise culture or cross-cultural trainer, such feedback needs to focus on all aspects of human communication. This means that, in addition to verbal communication, nonverbal messages must be captured and analyzed for semantic meaning. The goal of this dissertation is to employ machine-learning algorithms that semi-automate and, where supported, automate event tagging in training systems developed to improve human-to-human interaction. The specific context in which …
Investigating The Moderating Effects Of Optisism, Hope, And Gratitude On The Relationship Among Negative Life Events And Psychological Distress And Life Satisfaction, Abdi Gungor
Electronic Theses and Dissertations
The literature has documented that negative life events such as divorce, financial issues, or relationship changes lead to various psychological concerns including depression, anxiety, or suicidal behaviors. However, several variables affect how people cope with negative life events. Among those variables, optimism, hope, and gratitude have been emphasized in the literature, and their relationships with several psychological outcomes have been studied. However, little is known about the effects of these variables on negative life events and their relationship to psychological distress and life satisfaction. The purpose of this study was to investigate the relationship between negative life events and psychological …
Effects Of Mixed-Reality Peer Interactions On Workplace Problem-Solving Of Individuals With Intellectual Disabilities, Caitlyn Bukaty
Effects Of Mixed-Reality Peer Interactions On Workplace Problem-Solving Of Individuals With Intellectual Disabilities, Caitlyn Bukaty
Electronic Theses and Dissertations
Individuals with intellectual disabilities (ID) are known to have deficits in problem-solving skills within the realm of social communication, which may pose a barrier to employment (Livermore & Goodman, 2009). The ability to provide appropriate verbal responses is critical to success in an inclusive workplace for people with ID (Alber, Heward, & Hippler, 1999). Foley and colleagues (2013) found individuals with ID with strong communication skills were more likely to be engaged in independent employment than peers with weak communication skills. Furthermore, the Workforce Innovation and Opportunity Act (WIOA; 2014) mandated improved access to inclusive employment opportunities for people with …
The Role Of Virtual Avatars In Supporting Middle School Students From Culturally And Linguistically Diverse Backgrounds On Science In After School Programs, Benjamin Gallegos
The Role Of Virtual Avatars In Supporting Middle School Students From Culturally And Linguistically Diverse Backgrounds On Science In After School Programs, Benjamin Gallegos
Electronic Theses and Dissertations
Students who receive additional educational supports in afterschool programs were the focus of the investigation. This study was conducted to measure what effects a TeachLivE avatar, a mixed-reality virtual environment, used in combination with a video game, had on the activation of prior knowledge in science for students in rural middle school. The delivery of the biology science lessons on cell structures and processes were delivered using the video game, Cell Command. The TeachLivE adult avatar was customized as a biologist who spoke to students in the treatment group about science concepts prior to playing the science video game. Unexpected …
Project Ican: A Stem Learning And Persistence Model For Postsecondary Students With Disabilities, Aaron Koch
Project Ican: A Stem Learning And Persistence Model For Postsecondary Students With Disabilities, Aaron Koch
Electronic Theses and Dissertations
Education and work in Science, Technology, Engineering, & Math (STEM) are of utmost importance in a post-modern society. Yet American performance in the STEM disciplines has waned over recent years. In order to recapture a global advantage in STEM, efforts are being made by educators and policy makers to compile and implement instructional supports. Of particular interest to this study are post-secondary students with disabilities (SWDs) who persist and learn in STEM degree paths. This population is an "untapped resource" with limitless potential for contribution to the collective fields of STEM (Leddy, 2010, p. 3; Alston, Hampton, Bell, & Strauss, …
The Influence Of Perceived Organizational Support, Perceived Coworker Support & Debriefing On Work-Related Compassion Satisfaction, Burnout, And Secondary Traumatic Stress In Florida Public Safety Personnel, Anastasia Miller
Electronic Theses and Dissertations
The purpose of this study was to examine the relationships between perceived organizational support, perceived coworker support, and debriefing on the one hand, and compassion satisfaction, burnout, and secondary traumatic stress on the other hand in Florida law enforcement, fire, emergency medical services, and dispatch public safety workers. In order to explore the relationships between these constructs, the research questions examined the relationships of the work environment of Florida public safety by administering surveys gauging perceived organizational support, perceived coworker support, psychological resilience, and debriefing activities that the personnel participate in. The Professional Quality of Life: Compassion Satisfaction and Compassion …
Keeping Quiet: Investigating The Maintenance And Policing Of Male-Dominated Gaming Space, Christopher Charles
Keeping Quiet: Investigating The Maintenance And Policing Of Male-Dominated Gaming Space, Christopher Charles
Electronic Theses and Dissertations
Despite the near parity between the number of female and male gamers (Entertainment Software Association, 2014), studies on gender in videogames illustrate a culture that typically reflects hegemonic masculinity and excludes women on a multitude of levels. Because these interactions occur within real and virtual space (both online and within games), a holistic approach is warranted to analyze these mechanisms of oppression. This paper seeks to uncover the ways by which gaming culture is maintained and policed as a male-dominated space, through qualitative data collection. By using ethnographic, participant observation at a large, multi-genre convention the experiences of both male …
Mathematical Modeling Of Infectious Diseases With Latency: Homogeneous Mixing And Contact Network, Keith Carlson
Mathematical Modeling Of Infectious Diseases With Latency: Homogeneous Mixing And Contact Network, Keith Carlson
Electronic Theses and Dissertations
In mathematical epidemiology, the standard compartmental models assume homogeneous mixing in the host population, in contrast to the disease spread process over a real host contact network. One approach to incorporating heterogeneous mixing is to consider the population to be a network of individuals whose contacts follow a given probability distribution. In this thesis we investigate in analogy both homogeneous mixing and contact network models for infectious diseases that admit latency periods, such as dengue fever, Ebola, and HIV. We consider the mathematics of the compartmental model as well as the network model, including the dynamics of their equations from …
Multi-Purpose Device For Analyzing And Measuring Ultra-Short Pulses, Naman Anilkumar Mehta
Multi-Purpose Device For Analyzing And Measuring Ultra-Short Pulses, Naman Anilkumar Mehta
Electronic Theses and Dissertations
Intensity auto correlator is device to measure pulse widths of ultrashort pulses on the order of picoseconds and femtoseconds. I have built an in-house, compact, portable, industry standard intensity auto correlator for measuring ultrashort pulse-widths. My device is suitable for pulse-widths from 500 ps to 50 fs. The impetus for developing this instrument stemmed from our development of a multicore-fiber laser for high power laser applications, which also produces very short pulses that cannot be measured with an oscilloscope. As techniques for measuring short pulse-widths have been well studied, what made my journey exciting was the process of taking an …
Techniques For Automated Parameter Estimation In Computational Models Of Probabilistic Systems, Faraz Hussain
Techniques For Automated Parameter Estimation In Computational Models Of Probabilistic Systems, Faraz Hussain
Electronic Theses and Dissertations
The main contribution of this dissertation is the design of two new algorithms for automatically synthesizing values of numerical parameters of computational models of complex stochastic systems such that the resultant model meets user-specified behavioral specifications. These algorithms are designed to operate on probabilistic systems – systems that, in general, behave differently under identical conditions. The algorithms work using an approach that combines formal verification and mathematical optimization to explore a model's parameter space. The problem of determining whether a model instantiated with a given set of parameter values satisfies the desired specification is first defined using formal verification terminology, …
Non-Dispersive Infrared (Ndir) Gas Sensor Utilizing Light-Emitting-Diodes Suitable For Applications Demanding Low-Power And Lightweight Instruments, Kyle Thurmond
Electronic Theses and Dissertations
Gas sensors that are low-power, light-weight, and rugged, while also remaining low-cost, have considerable appeal to areas from automotive to space flight. There are increasing demands for higher efficient vehicles with lower emissions in order meet regulations that are meant to mitigate or lessen the effects of climate change. An affordable, fast response sensor that can measure transient carbon monoxide (CO) and carbon dioxide (CO2) has broad application which can lead to more efficient, fuel flexible engines and regulations of harmful emissions. With compact, economical, low-power sensors that are able to continually monitor gases that are characteristic of burning materials, …
Transcriptional And Post-Transcriptional Regulation Of Gene Expression, Jun Ding
Transcriptional And Post-Transcriptional Regulation Of Gene Expression, Jun Ding
Electronic Theses and Dissertations
Regulation of gene expression includes a variety of mechanisms to increase or decrease specific gene products. Gene expression can be regulated at any stage from transcription to post-transcription and it's essential to almost all living organisms, as it increases the versatility and adaptability by allowing the cell to express the needed proteins. In this dissertation, we comprehensively studied the gene regulation from both transcriptional and post-transcriptional points of view. Transcriptional regulation is by which cells regulate the transcription from DNA to RNA, thereby directing gene activity. Transcriptional factors (TFs) play a very important role in transcriptional regulation and they are …
Biophysical Sources Of 1/F Noises In Neurological Tissue, Alan Paris
Biophysical Sources Of 1/F Noises In Neurological Tissue, Alan Paris
Electronic Theses and Dissertations
High levels of random noise are a defining characteristic of neurological signals at all levels, from individual neurons up to electroencephalograms (EEG). These random signals degrade the performance of many methods of neuroengineering and medical neuroscience. Understanding this noise also is essential for applications such as real-time brain-computer interfaces (BCIs), which must make accurate control decisions from very short data epochs. The major type of neurological noise is of the so-called 1/f-type, whose origins and statistical nature has remained unexplained for decades. This research provides the first simple explanation of 1/f-type neurological noise based on biophysical fundamentals. In addition, noise …
Development Of Enzyme-Free Hydrogen Peroxide Biosensor Using Cerium Oxide And Mechanistic Study Using In-Situ Spectro-Electrochemistry, Shashank Saraf
Development Of Enzyme-Free Hydrogen Peroxide Biosensor Using Cerium Oxide And Mechanistic Study Using In-Situ Spectro-Electrochemistry, Shashank Saraf
Electronic Theses and Dissertations
During recent development, it has been demonstrated that cerium oxide nanoparticles (CNPs) have exhibited catalytic activity which mimics naturally existing enzymes such as superoxide dismutase (SOD) and catalase. The underlying mechanism is attributed to the modulation of oxygen vacancies on CNPs lattice by dynamic switching of the oxidation states between Ce3+ and Ce4+ due to the electron transfer resulting from the redox reaction between CNPs and reactive oxygen species such as hydrogen peroxide (H2O2). Thereby the redox potential of CNPs is dependent on the surface chemistry i.e. the surface concentration of Ce3+ and Ce4+ Currently, the ratio of Ce3+/ Ce4+ …
Effects Of Climate Change And Anthropogenic Activities On The Everglades Landscape., Daljit Sandhu
Effects Of Climate Change And Anthropogenic Activities On The Everglades Landscape., Daljit Sandhu
Electronic Theses and Dissertations
The Everglades has been experiencing major changes, both climatic and anthropogenic, such that the landscape is experiencing additional stresses and forcings leading it away from its natural equilibrium. The land within and surrounding the Everglades has undergone severe modifications that may have detrimental effects on wildlife and natural features, such as rivers and landscape connectivity. Here in this study, the main focus is on understanding and quantifying hydrologic and geomorphic signatures of climatic and anthropogenic changes on the Everglades landscape. For this, in particular, available data on natural hydrological processes was used, such as rainfall, groundwater elevation, streamflow as well …
Modeling Wastewater Indicators And Effects Of Contaminant Removal Strategies On Groundwater And Spring Discharge In A Karst Aquifer, Erin Reed
Electronic Theses and Dissertations
This dissertation reports on research related to groundwater and contaminant transport to the Volusia Blue Spring (VBS), an Outstanding Florida Water Body located in Volusia County (Florida). The integration of springshed water quality and contaminant fate and transport (CFT) modeling played key roles in the evaluation of anthropogenic recharge impacts on VBS. To study anthropogenic recharge into the karst limestone aquifer, wastewater effluent, golf course ponds, septic tanks, groundwater monitoring wells, and VBS discharge were sampled for boron, nitrate-nitrogen, nitrate-oxygen and their isotopes spatially throughout the VBS springshed. Data related to natural water features, rainfall, land use, water use, treated …
She's Not Fit For The Business World: An Initial Examination Of Gender, Age, And Weight, Miranda Pelkey
She's Not Fit For The Business World: An Initial Examination Of Gender, Age, And Weight, Miranda Pelkey
Electronic Theses and Dissertations
The present study examined archetype theory (Marcus & Fritzsche, 2015) that suggests that the intersection of multiple group memberships will create a unique cognitive representation, as it is relates to sex, age, and weight. Following a pilot study to equate photos on attractiveness, perceived competence, professionalism, and intelligence, 183 participants reviewed a fictitious LinkedIn profile in which all information was held constant across participants except the photo. Using a 2 (sex) x 2 (age) x 2 (weight) design (manipulated through the photos), participants rated the job applicant on adjectives associated with proposed sex, age, and weight archetypes and on perceptions …
Fabrication And Investigation Of An Enzyme-Free, Nanoparticle-Based Biosensor For Hydrogen Peroxide Determination, Craig Neal
Electronic Theses and Dissertations
Electrochemical biosensors often employ enzymes as detection elements. These sensors are highly selective towards target analytes, however the scope of their application is limited by the poor stability of the enzyme. In this study, multi-valent inorganic cerium oxide nanoparticles were used as detection elements for the analysis of hydrogen peroxide. The electrochemical response of the cerium oxide towards hydrogen peroxide analyte is defined through cyclic voltammetry and chronoamperometry. This response was found to be dependent on nanoparticle Ce3+:Ce4+ redox state ratio and this property is exploited to fabricate a biosensor. As produced, the biosensor demonstrated sensitivity at picomolar analyte concentrations. …
Modeling Mass Transfer And Assessing Cost And Performance Of A Hollow Fiber Nanofiltration Membrane Process, David Yonge
Modeling Mass Transfer And Assessing Cost And Performance Of A Hollow Fiber Nanofiltration Membrane Process, David Yonge
Electronic Theses and Dissertations
Bench-scale water treatment testing of three next generation hollow-fiber (HF) nanofiltration (NF) membranes was conducted to characterize divalent ion rejection capabilities and investigate removal mechanisms. Existing mathematical models were investigated to describe solute transport using synthetic magnesium sulfate solutions including the size exclusion model, homogenous solution diffusion (HSD) model, dimensional analysis, and the HSD model incorporating film theory. Solute transport for two of the membranes were described by HSD theory and were predictive of their 90% divalent ion removal. A third membrane was more accurately modeled using size exclusion and was found to be predictive of its 40% divalent ion …
The Frequency Of The Passive Voice In Freshman Academic Books, Basma Moreb
The Frequency Of The Passive Voice In Freshman Academic Books, Basma Moreb
Electronic Theses and Dissertations
The use of passive voice has long been an area of difficulty for English learners. Celce-Murcia & Larsen-Freeman (2015) noted that it is learning when to use the English passive that presents the greatest long-term challenge to ESL/EFL students (p. 352). Because textbooks are a source of language input for English learners, this study investigated the frequency of passive voice verbs in samples from four academic textbooks in courses commonly taken by freshmen. The study also examined whether there are significant differences between the frequencies by textbook. The data was collected from four General Education Plan (GEP) subject textbooks used …
"Heaps O' Folkses Be Varmints": Animal And Human Identity In Rawlings's Cross Creek, Savannah Bateman
"Heaps O' Folkses Be Varmints": Animal And Human Identity In Rawlings's Cross Creek, Savannah Bateman
The Marjorie Kinnan Rawlings Journal of Florida Literature
No abstract provided.
Battle On The Homefront: An Auto-Ethnographic Perspective On Domestic Violence Post-Deployment, Michelle Craske
Battle On The Homefront: An Auto-Ethnographic Perspective On Domestic Violence Post-Deployment, Michelle Craske
Electronic Theses and Dissertations
Domestic and sexual trauma that occurs during the time a soldier is actively serving in the military are difficult for researchers to measure in large part because the Department of Defense does not report these offenses to the public. Recent combat missions to the Middle East have increased mental health issues among soldiers, but it is unclear whether these issues are related to domestic violence and sexual trauma soldiers may have endured. The purpose of this study is to investigate how combat operations may have increased domestic violence and sexual trauma among soldiers. An auto ethnographic method is used to …
Visual Scanpath Training For Facial Affect Recognition In A Psychiatric Sample, Chi Chan
Visual Scanpath Training For Facial Affect Recognition In A Psychiatric Sample, Chi Chan
Electronic Theses and Dissertations
Social cognition is essential for functional outcome and quality of life in psychiatric patients. Facial affect recognition (FAR), a domain of social cognition, is impaired in many patients with schizophrenia and bipolar disorder. There is evidence that abnormal visual scanpath patterns may underlie FAR deficits, and metacognitive factors may impact task performance. The present study aimed to develop a brief, individually-administered, computerized training program to normalize scanpath patterns in order to improve FAR in patient with a psychosis history or bipolar I disorder. The program was developed using scanpath data from 19 nonpsychiatric controls (NC) while they completed a FAR …