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The Influence Of Technology On Adolescent Development: An Eco-Cultural Analysis Of Cybersocial Activity, Stephanie Helsel
The Influence Of Technology On Adolescent Development: An Eco-Cultural Analysis Of Cybersocial Activity, Stephanie Helsel
Electronic Theses and Dissertations
The introduction of new technologies into society inevitably results in culture-wide changes that affect the way people work, learn, and experience leisure time. For those American adolescents with access to technology, the use of the Internet to develop and maintain relationships is quickly becoming ubiquitous, especially through social network sites; the most popular network site, MySpace, has grown exponentially since its creation in 2003. Adolescents are the primary users of such sites and many of them maintain blogs, or online chronicles that are available for public viewing and comment, along with their profile pages and friend networks. This qualitative study …
Probing The Novelties Of Alkalilimnicola Ehrlichii Strain Mlhe-1 With Genomic And Proteomic Approaches, Christine Richey
Probing The Novelties Of Alkalilimnicola Ehrlichii Strain Mlhe-1 With Genomic And Proteomic Approaches, Christine Richey
Electronic Theses and Dissertations
Alkalilimnicola ehrlichii strain MLHE -1T is a gram negative haloalkaliphilic gammaproteobacterium isolated from Mono Lake, CA. It has the unique ability to grow both aerobically as a heterotroph (with oxygen and acetate) and anaerobically as a chemolithoautotroph by coupling arsenite oxidation to nitrate reduction. Its genome (3.276 MB, 67.53% mole GC) has been sequenced to closure and annotated (2883 putative ORFs). The pathways involved in nitrogen (e.g., denitrification, assimilation), sulfur, and carbon metabolism (glycolysis, gluconeogenesis), carbon fixation, tricarboxylic acid cycle, and motility (flagella, pili) are described herein. Though no homolog for arsenite oxidase was found, two putative arsenate reductases (arr) …
A Comparison Of Coping Responses To Stress Among Counselor Education Students At The Beginning Stage, Practicum Stage, And Graduating Stage From Their Program Of Studies, Jill Maloney
Electronic Theses and Dissertations
The purpose of this study was to determine if there is a difference in coping responses to stress among students in a Master's level counselor education program. The study was an investigation of the difference between three nonequivalent groups: Group A- Beginning counseling students, Group B- Practicum counseling students, and Group C- Graduating counseling students. Data was obtained through a demographic sheet developed by the examiner and a self report measure. The COPE inventory was administered to 65 graduate counselor education students to assess 15 different coping styles. The study had 15 hypotheses based on the 15 scales of the …
Outside The Frame: Towards A Phenomenology Of Texts And Technology, Anthony Crisafi
Outside The Frame: Towards A Phenomenology Of Texts And Technology, Anthony Crisafi
Electronic Theses and Dissertations
The subject of my dissertation is how phenomenology can be used as a tool for understanding the intersection between texts and technology. What I am suggesting here is that, specifically in connection with the focus of our program in Texts and Technology, there are very significant questions concerning how digital communications technology extends our humanity, and more importantly what kind of epistemological and ontological questions are raised because of this. There needs to be a coherent theory for Texts and Technology that will help us to understand this shift, and I feel that this should be the main focus for …
Tissue Engineering The Motoneuron To Muscle Segment Of The Stretch Reflex Arc Circuit Utilizing Micro-Fabrication, Interface Design And Defined Medium Formulation, Mainak Das
Electronic Theses and Dissertations
The stretch reflex circuit is one of the most primitive circuits of mammalian system and serves mainly to control the length of the muscle. It consists of four elements: the stretch sensor (muscle spindle/ intrafusal fiber lie parallel between extrafusal, contractile musculature), extrafusal muscle fiber, sensory neuron and motoneuron. The basic principle of the stretch reflex arc circuit is as follows: whenever there is a sudden stretch in a muscle, it needs to compensate back to its original length so as to prevent any kind of injury. It performs this compensation process using a simple negative feed back circuit called …
Diagnosing Anencephaly In Archaeology: A Comparative Analysis Of Nine Clinical Specimens From The Smithsonian Institution Nation, Stevie Mathews
Diagnosing Anencephaly In Archaeology: A Comparative Analysis Of Nine Clinical Specimens From The Smithsonian Institution Nation, Stevie Mathews
Electronic Theses and Dissertations
The inclusion of human fetal skeletons in the archaeological record can reveal much about past cultures' perception of life and death. The preservation of fetal remains in the archaeological record is a rarity, and the discovery of pathological skeletons is even rarer. A fetal skeleton from a Roman period cemetery (c. 31BC - 303AD) in the Dakhleh Oasis, Egypt, displays what are thought to be classic skeletal indicators of the neural tube defect, anencephaly. The published literature concerning the skeletal diagnosis of anencephaly is scant so in order to diagnose this individual it is pertinent to create a diagnostic standard. …
An Adaptive Multiobjective Evolutionary Approach To Optimize Artmap Neural Networks, Assem Kaylani
An Adaptive Multiobjective Evolutionary Approach To Optimize Artmap Neural Networks, Assem Kaylani
Electronic Theses and Dissertations
This dissertation deals with the evolutionary optimization of ART neural network architectures. ART (adaptive resonance theory) was introduced by a Grossberg in 1976. In the last 20 years (1987-2007) a number of ART neural network architectures were introduced into the literature (Fuzzy ARTMAP (1992), Gaussian ARTMAP (1996 and 1997) and Ellipsoidal ARTMAP (2001)). In this dissertation, we focus on the evolutionary optimization of ART neural network architectures with the intent of optimizing the size and the generalization performance of the ART neural network. A number of researchers have focused on the evolutionary optimization of neural networks, but no research has …
Early Attachment Stress, Attentional Control Dysfunction And Problems With Self-Regulation, Joshua David Bernstein
Early Attachment Stress, Attentional Control Dysfunction And Problems With Self-Regulation, Joshua David Bernstein
Electronic Theses and Dissertations
Development of the self-regulatory elements of executive control is one of the most critical and significant developmental achievements of early childhood. Executive control and self-regulation are constructs that lie at the nexus of developmental, neuropsychological, and clinical investigations. Effortful Control (EC) is a construct representing a hybridization of these separate but intertwined notions. It describes the self regulatory aspects of the executive control system. The construct is of special interest and use, because, despite the traditional practice of conceptualizing cognitive and emotional processes independently of one another, the construct of EC places emotional, cognitive, and behavioral self-regulatory capacities together. EC …
Interactions Of The Fragile X Protein Family With The G Quadruplex Forming Rna Targets, Lakshmi Menon
Interactions Of The Fragile X Protein Family With The G Quadruplex Forming Rna Targets, Lakshmi Menon
Electronic Theses and Dissertations
The absence of fragile X mental retardation protein (FMRP) causes Fragile X Syndrome, the most common form of inherited mental retardation. FMRP, an RNA binding protein and, part of large ribonucleoprotein complexes, is proposed to participate in the transport, localization and translation regulation of specific target mRNAs. How the absence of this protein leads to mental retardation is not clearly understood. FMRP has been shown to use its Arginine-Glycine-Glycine (RGG) box to bind with high affinity to target RNA sequences containing G quadruplex structures. Two of the proposed mRNA targets of FMRP are the human semaphorin 3F (S3F) mRNA and …
Barriers To Parental Involvement In The Seneca Valley School District, Jeffrey Fuller
Barriers To Parental Involvement In The Seneca Valley School District, Jeffrey Fuller
Electronic Theses and Dissertations
The involvement of parents in the educational programs of their children has been shown to have a significant impact on both student achievement and the family. While both educators and parents are accountable for the development of the partnership between the home and the school, teachers and school administrators have the greatest responsibility for opening the lines of communication and making schools and classrooms welcoming. By identifying and overcoming those factors that parents perceive to be barriers to their involvement in their child's educational program, educators will have a significant positive impact on the future success of the children in …
Optimizing Dynamic Logic Realizations For Partial Reconfiguration Of Field Programmable Gate Arrays, Matthew Parris
Optimizing Dynamic Logic Realizations For Partial Reconfiguration Of Field Programmable Gate Arrays, Matthew Parris
Electronic Theses and Dissertations
Many digital logic applications can take advantage of the reconfiguration capability of Field Programmable Gate Arrays (FPGAs) to dynamically patch design flaws, recover from faults, or time-multiplex between functions. Partial reconfiguration is the process by which a user modifies one or more modules residing on the FPGA device independently of the others. Partial Reconfiguration reduces the granularity of reconfiguration to be a set of columns or rectangular region of the device. Decreasing the granularity of reconfiguration results in reduced configuration filesizes and, thus, reduced configuration times. When compared to one bitstream of a non-partial reconfiguration implementation, smaller modules resulting in …
Dynamic Task Allocation In Mobile Robot Systems Using Utility Funtions, Scott Vander Weide
Dynamic Task Allocation In Mobile Robot Systems Using Utility Funtions, Scott Vander Weide
Electronic Theses and Dissertations
We define a novel algorithm based on utility functions for dynamically allocating tasks to mobile robots in a multi-robot system. The algorithm attempts to maximize the performance of the mobile robot while minimizing inter-robot communications. The algorithm takes into consideration the proximity of the mobile robot to the task, the priority of the task, the capability required by the task, the capabilities of the mobile robot, and the rarity of the capability within the population of mobile robots. We evaluate the proposed algorithm in a simulation study and compare it to alternative approaches, including the contract net protocol, an approach …
A Competitive Reconfiguration Approach To Autonomous Fault Handling Using Genetic Algorithms, Kening Zhang
A Competitive Reconfiguration Approach To Autonomous Fault Handling Using Genetic Algorithms, Kening Zhang
Electronic Theses and Dissertations
In this dissertation, a novel self-repair approach based on Consensus Based Evaluation (CBE) for autonomous repair of SRAM-based Field Programmable Gate Arrays (FPGAs) is developed, evaluated, and refined. An initial population of functionally identical (same input-output behavior), yet physically distinct (alternative design or place-and-route realization) FPGA configurations is produced at design time. During run-time, the CBE approach ranks these alternative configurations after evaluating their discrepancy relative to the consensus formed by the population. Through runtime competition, faults in the logical resources become occluded from the visibility of subsequent FPGA operations. Meanwhile, offspring formed through crossover and mutation of faulty and …
Nutrient Removal From Stormwater By Using Green Sorption Media, Fahim Hossain
Nutrient Removal From Stormwater By Using Green Sorption Media, Fahim Hossain
Electronic Theses and Dissertations
High nitrogen and phosphorus content in storm water runoff has affected groundwater, springs and surface water by impacting ecosystem integrity and human health. Nitrate may be toxic and can cause human health problem such as methemoglobinemia, liver damage and even cancers. Phosphorus may trigger the eutrophication issues in fresh water bodies, which could result in toxic algae and eventually endanger the source of drinking waters. Sorption media with mixes of some recycled materials, such as sawdust and tire crumb, combined with sand/silt and limestone, becomes appealing for nutrient removal in environmental management. This paper presented is a specific type of …
Removal Of 2, 4-Dinitrophenol By Ferrate, Gianna Cooley
Removal Of 2, 4-Dinitrophenol By Ferrate, Gianna Cooley
Electronic Theses and Dissertations
Ferrate (molecular formula, FeVIO42-) has been studied increasingly since the 1970s as a disinfectant and coagulant for domestic wastewater and also as an oxidant for industrial wastewaters (Murmann and Roginson, 1974, Gilbert et al., 1978, Kazama, 1994, Jiang et al., 2002, and Sharmaet al., 2005). This research was performed to explore whether ferrate could possibly be used as chemical treatment for industrial wastewaters from plastic, chemical, dye, soap, and wood stain producing plants that contain 2, 4-Dinitrophenol (DNP). DNP is listed on the United States Environmental Protection Agency (EPA) Drinking Water Contaminant Candidate List (CCL). This list includes compounds which …
The Effectiveness Of Specifically Designed Filter Media To Reduce Nitrate And Orthophosphate In Stormwater Runoff, Mikhal Moberg
The Effectiveness Of Specifically Designed Filter Media To Reduce Nitrate And Orthophosphate In Stormwater Runoff, Mikhal Moberg
Electronic Theses and Dissertations
Throughout Central Florida surface water and ground water are decreasing in quantity and quality in part because of excess Nitrate and Phosphorus nutrients. Stormwater runoff serves as a medium for transport of Nitrate and Phosphorus to surface water and ground water. The goal of this experiment is assess the Nitrate and Phosphorus removal in stormwater using select media. The results of a literature search, batch test experimentation and column test experimentation are used to determine an optimal media blend that may be implemented in detention ponds to reduce Nitrate and Phosphorus. The extensive literature search revealed 32 different media that …
Performance Based Decision System In Determining Post Closure Care (Pcc) Duration In Florida Landfills, Asawari Kulkarni
Performance Based Decision System In Determining Post Closure Care (Pcc) Duration In Florida Landfills, Asawari Kulkarni
Electronic Theses and Dissertations
This study is an evaluation of Post Closure Care (PCC) duration of landfills using performance based methodology. The post closure care phase begins once the landfill is closed. As required by the Resource Conservation Recovery Act (RCRA) Subtitle D, PCC duration for municipal solid waste landfills is 30 years. During the PCC period, the landfill operator/owner is required to conduct monitoring for leachate, landfill gas, and ground-water and maintain the integrity of the cap so that the landfill does not impose a threat to surrounding human health and environment (HH&E). The duration of PCC can be reduced by the director …
A Hybrid System Dynamics-Discrete Event Simulationapproach To Simulating The Manufacturing Enterprise, Magdy Helal
A Hybrid System Dynamics-Discrete Event Simulationapproach To Simulating The Manufacturing Enterprise, Magdy Helal
Electronic Theses and Dissertations
With the advances in the information and computing technologies, the ways the manufacturing enterprise systems are being managed are changing. More integration and adoption of the system perspective push further towards a more flattened enterprise. This, in addition to the varying levels of aggregation and details and the presence of the continuous and discrete types of behavior, created serious challenges for the use of the existing simulation tools for simulating the modern manufacturing enterprise system. The commonly used discrete event simulation (DES) techniques face difficulties in modeling such integrated systems due to increased model complexity, the lack of data at …
A Kinetics Study Of Selected Filtration Media For Nutrient Removal At Various Temperatures, Elizabeth Henderson
A Kinetics Study Of Selected Filtration Media For Nutrient Removal At Various Temperatures, Elizabeth Henderson
Electronic Theses and Dissertations
In recent years the nutrient levels of the Upper Floridan aquifer have been increasing (USGS, 2008). An example of this is found in Ocala, Florida where Silver Springs nitrate concentrations have risen from 0.5 mg/L in the 1960 s to approximately 1.0 mg/L in 2003 (Phelps, 2004). Because stormwater is a contributor to surficial and groundwater aquifer recharge, there is an increasing need for methods that decrease nitrogen and phosphorus levels. A laboratory column study was conducted to simulate a retention pond with saturated soil conditions. The objectives of the column studies reported in this thesis were to investigate the …
Probing And Tuning The Size, Morphology, Chemistry And Structure Of Nanoscale Cerium Oxide, Satyanarayana Kuchibhatla
Probing And Tuning The Size, Morphology, Chemistry And Structure Of Nanoscale Cerium Oxide, Satyanarayana Kuchibhatla
Electronic Theses and Dissertations
Cerium oxide (ceria)-based materials in the nanoscale regime are of significant fundamental and technological interest. Nanoceria in pure and doped forms has current and potential use in solid oxide fuel cells, catalysis, UV- screening, chemical mechanical planarization, oxygen sensors, and bio-medical applications. The characteristic feature of Ce to switch between the +3 and + 4 oxidation states renders oxygen buffering capability to ceria. The ease of this transformation was expected to be enhanced in the nanoceria. In most the practical scenarios, it is necessary to have a stable suspension of ceria nanoparticles (CNPs) over longer periods of time. However, the …
Development And Application Study Of Nanoscale Thin Film Materials And Polymer Nanocomposites, Hui Chen
Development And Application Study Of Nanoscale Thin Film Materials And Polymer Nanocomposites, Hui Chen
Electronic Theses and Dissertations
This dissertation demonstrated that the manipulation of substances at the molecular or nanometer level can lead to the discovery and development of new materials with interesting properties and important applications. Chapter 1 describes the development of a nanoscale molecular thin film material for corrosion protection. By using a self-assembled monolayer film with a thickness of only about 1 nanometer as a linkage, a covalent bonding was achieved between a polyurethane top coating and an aluminum alloy substrate. This covalent bonding between polymer top coating and the aluminum alloy substrate significantly improved the corrosion resistance of the substrate. Chapter 2 and …
Application Of Polyelectrolyte Multilayers For Photolithographic Patterning Of Diverse Mammalian Cell Types In Serum Free Medium, Vipra Dhir
Electronic Theses and Dissertations
Integration of living cells with novel microdevices requires the development of innovative technologies for manipulating cells. Chemical surface patterning has been proven as an effective method to control the attachment and growth of diverse cell populations. Patterning polyelectrolyte multilayers through the combination of layer-by-layer self-assembly technique and photolithography offers a simple, versatile and silicon compatible approach that overcomes chemical surface patterning limitations, such as short-term stability and low protein adsorption resistance. In this study, direct photolithographic patterning of PAA/PAAm and PAA/PAH polyelectrolyte multilayers was developed to pattern mammalian neuronal, skeletal and cardiac muscle cells. For all studied cell types, PAA/PAAm …
Bent Bones: The Pathological Assessment Of Two Fetal Skeletons From The Dakhleh Oasis, Egypt, Darcy Cope
Bent Bones: The Pathological Assessment Of Two Fetal Skeletons From The Dakhleh Oasis, Egypt, Darcy Cope
Electronic Theses and Dissertations
The present study evaluates two fetal individuals (B532 and B625) from the Kellis 2 cemetery (Roman period circa A.D. 50 A.D. 450), Dakhleh Oasis, Egypt, that display skeletal anomalies that may explain their death. Both individuals exhibit bowing of the long bones in addition to other skeletal deformities unique to each individual. To assess these pathologies a differential diagnosis based on the congenital occurrence of long bone bowing is developed. Long bone bowing is selected because it is the more prevalent abnormality in the paleopathological literature and the other abnormalities are not as easily identifiable in the literature. For the …
Development Of Small Molecule Inhibitors Of Hypoxia Inducible Factor Activation Through Pharmacophore Model Development, Tiffany D. Clark
Development Of Small Molecule Inhibitors Of Hypoxia Inducible Factor Activation Through Pharmacophore Model Development, Tiffany D. Clark
Electronic Theses and Dissertations
No abstract provided.
Structure-Function Analysis Of The Drosophila Stubble Type Ii Transmembrane Serine Protease, Rachel Morgan
Structure-Function Analysis Of The Drosophila Stubble Type Ii Transmembrane Serine Protease, Rachel Morgan
Electronic Theses and Dissertations
Hormonally-triggered regulatory hierarchies play a major role in organismal development. Disruption of a single member of such a hierarchy can lead to irregular development and disease. Therefore, knowledge of the members involved and the mechanisms controlling signaling through such pathways is of great importance in understanding how resulting developmental defects occur. Type II transmembrane serine proteases (TTSPs) make up a family of cell surface-associated proteases that play important roles in the development and homeostasis of a number of mammalian tissues. Aberrant expression of TTSPs is linked to several human disorders, including deafness, heart and respiratory disease and cancer. However, the …
Tmdl Bioassessment Sampling Of Benthic Macroinvertebrates For Lake Jesup And Lake Seminary, Gloria Eby
Tmdl Bioassessment Sampling Of Benthic Macroinvertebrates For Lake Jesup And Lake Seminary, Gloria Eby
Electronic Theses and Dissertations
The objective of this study was to obtain a bioassessment using benthic macroinvertebrates to meet TMDL (Total Maximum Daily Load) criteria for an oligotrophic (Lake Seminary) and an eutrophic (Lake Jesup) freshwater system in Seminole County, Florida. Monthly sampling of the benthic macroinverterbrate communities provided important biological data necessary to construct TMDL protocol and trophic state. Since macroinvertebrates are near the base of the food chain, they not only provide a critical role in the natural flow of energy and cycling of nutrients through the food web, but also provide a good indication of water quality by their presence and …
Growth And Survival Of Bacteria In Simulated Martian Conditions, Bonnie Berry
Growth And Survival Of Bacteria In Simulated Martian Conditions, Bonnie Berry
Electronic Theses and Dissertations
Escherichia coli and Serratia liquefaciens, two common microbial spacecraft contaminants known to replicate under low atmospheric pressures of 25 mb, were tested for growth and survival in simulated martian conditions. Stressors of high salinity, low temperature, and low pressure were screened alone and in combination to determine how they might affect microbial activity. Growth and survival of E. coli and S. liquefaciens under low temperatures (30, 20, 10, or 5 °C) with increasing concentrations (0, 5, 10, or 20 %) of three salts believed to be present on the surface of Mars (MgCl2, MgSO4, NaCl) were monitored over 7 d. …
Cis-Regulatory Analysis Of The Pigment Cell Differentiation Gene Polyketide Synthase, David Rogers
Cis-Regulatory Analysis Of The Pigment Cell Differentiation Gene Polyketide Synthase, David Rogers
Electronic Theses and Dissertations
The analysis of Gene Regulatory Networks (GRNs) is essential to understanding the complete process of embryo development. Elucidating every gene regulatory circuit from maternal regulatory inputs all the way to the activation of differentiation gene batteries is an important step in increasing our understanding of developmental biology. In this work I study the cis-regulatory architecture of a pigment cell differentiation gene, polyketide synthase (SpPks) in the sea urchin Strongylocentrotus purpuratus. SpPks encodes an enzyme that is responsible for the biosynthesis of the sea urchin pigment echinochrome in larval pigment cells. The analysis of the promoter of a differentiation gene will …
Evaluation Of An Augmentation Of Rocky Mountain Bighorn Sheep At Badlands National Park, South Dakota, Teresa J. Zimmerman
Evaluation Of An Augmentation Of Rocky Mountain Bighorn Sheep At Badlands National Park, South Dakota, Teresa J. Zimmerman
Electronic Theses and Dissertations
Audubon’s (a.k.a. Badlands) bighorn (Ovis canadensis auduboni [Merriam 1901] now O. c. Canadensis [Shaw 1804]), described as a subspecies of bighorn sheep, was extirpated from its range by 1924. In 1964, 22 Rocky Mountain bighorn sheep were translocated from Pikes Peak, Colorado, to Badlands National Park (BNP) in southwestern South Dakota. Based on the estimated effective population size and analysis of molecular data, the bighorn sheep population at BNP underwent a population bottleneck at founding. Recommendations to restore genetic diversity in the BNP population included a mixed-sex augmentation (n > 30) from an outbred, native population of Rocky Mountain bighorn sheep. …
Evaluation Of A Simple Intervention To Increase Self- Efficacy For Independent Exercise In Cardiac Rehabilitation Participants, Sherry A. Barkley
Evaluation Of A Simple Intervention To Increase Self- Efficacy For Independent Exercise In Cardiac Rehabilitation Participants, Sherry A. Barkley
Electronic Theses and Dissertations
Purpose: While benefits of exercise after a cardiac event are well documented, participation in and adherence to cardiac rehabilitation (CR) programs is often low. The purpose of this study was to test the effectiveness of a self- efficacy coaching intervention (SCI): a simple theory-based behavioral intervention to increase self-efficacy for independent exercise as well as independent exercise behavior in CR patients. It was hypothesized that persons receiving the SCI treatment (T) would have higher levels of self-efficacy for exercise and greater participation in independent exercise than participants in an attention control (C) group.
Methods: People referred to a hospitalbased CR …