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Articles 4351 - 4380 of 11969
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Anteroposterior Jaw Position And Pharyngeal Airway Morphology In Young Adult Patients: A Cbct Study, Martin C. Avey
Anteroposterior Jaw Position And Pharyngeal Airway Morphology In Young Adult Patients: A Cbct Study, Martin C. Avey
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background and Objectives: Much previous attention has been paid in the orthodontic literature to craniofacial skeletal patterns and morphology of the upper airway and their association with obstructive sleep apnea (OSA). However, the majority of 3D airway investigations in recent years have analyzed the relationship of the airway with various anteroposterior (AP) skeletal patterns using traditional 2D cephalometric landmarks and measurements, such as SNA and SNB. The Six Elements of Orofacial Harmony is a diagnostic and treatment philosophy that has attempted to provide a more accurate and clinically relevant determination of the position of teeth and jaws. Element II specifically …
Robust Video Stabilization And Quality Evaluation For Amateur Videos, Usha Kalyani Alluri
Robust Video Stabilization And Quality Evaluation For Amateur Videos, Usha Kalyani Alluri
Graduate Theses, Dissertations, and Problem Reports (ETD)
Amateur videos captured by consumer-level devices (e.g., mobile phones, tablets, camcorders etc.) are often shaky, undirected and difficult to watch. Video stabilization techniques attempt to improve the video quality by filtering out unwanted jittering camera motions. Currently there are two key challenges in the field of video stabilization: robustness (e.g., in the presence of sophisticated camera motion including panning and rotation) and quality evaluation. Therefore the main contributions of this thesis are two-fold.;First, we present a robust video stabilization algorithm, which post-processes shaky video data and addresses the challenges of rapid camera panning and motion blur. Our algorithm is based …
Risk Perception And Awareness Of Oil And Natural Gas Safety Among Local Populations In The Eastern Province Of Jubail, Saudi Arabia, Wajeeh Aljanabi
Risk Perception And Awareness Of Oil And Natural Gas Safety Among Local Populations In The Eastern Province Of Jubail, Saudi Arabia, Wajeeh Aljanabi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main goal of this research was to examine the residents' and Saudi Aramco employees' awareness of risks to public health and the environment as a result of their close proximity to oil and natural gas production facilities in Jubail Industrial City, Saudi Arabia. The research objective was to characterize social representations of industrial activities by different social actors in order to enhance public participation in the region's risk management plan. Social representation theory was adopted to understand the risk perception of members of the community, both residents and oil plus natural gas employees. Residents were represented by faculty and …
The Effect Of Polymer Coatings On The Pulmonary Toxicity Of Multi-Walled Carbon Nanotubes, Lindsey M. Bishop
The Effect Of Polymer Coatings On The Pulmonary Toxicity Of Multi-Walled Carbon Nanotubes, Lindsey M. Bishop
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nanotechnology is the science of developing and manipulating molecular structures smaller than one hundred nanometers in at least one dimension. These structures are collectively called engineered nanomaterials. A subgroup of these engineered nanomaterials are multi-walled carbon nanotubes (MWCNT). They are of great interest to industry because of their small size, large surface area, strength, and conductivity in comparison to materials currently used. Practical applications of MWCNT include improvements for water filtration systems, composites, and drug delivery. The same properties that make them advantageous for industry may also confer adverse health effects. For workers in the U.S. handling CNTs, the process …
In-Line, Real-Time Particulate Matter Sensors For Obd And Exhaust After-Treatment System Control Applications, Marc Cyrill Besch
In-Line, Real-Time Particulate Matter Sensors For Obd And Exhaust After-Treatment System Control Applications, Marc Cyrill Besch
Graduate Theses, Dissertations, and Problem Reports (ETD)
The ability to quantify particle mass and number concentrations in the exhaust stream of combustion engines during in-use operation is of critical importance for continuously monitoring and diagnosing the particulate matter removal efficiency of modern exhaust gas after-treatment systems. Extensive literature survey suggested a sensor operating on the diffusion-charging principle being optimally suited for particle measurements due to their proportional response towards particle surface area. This study was designed to determine and assess the possibility of quantifying particle emissions during on-road measurements using a prototype diffusion-charging type sensor. Such a sensor would not only allow for continuous monitoring capabilities of …
Impact Of Being A West Virginia State Ffa President On Career And Personal Accomplishments As Perceived By Past State Ffa Presidents 1955 To 2005, Jada M. Bennett
Impact Of Being A West Virginia State Ffa President On Career And Personal Accomplishments As Perceived By Past State Ffa Presidents 1955 To 2005, Jada M. Bennett
Graduate Theses, Dissertations, and Problem Reports (ETD)
This descriptive survey study was designed to identify the impact of being a West Virginia State FFA President elected between the years of 1955-2005 on career and personal accomplishments. The population consisted of 51 people who were elected to the office of West Virginia FFA President, the response rate was 69%. A survey which was composed of four main question sets was mailed to the accessible population.;Questions focused on their SAE and FFA experience, involvement in community and school activities, leadership skills, and demographics. Data were collected and analyzed to identify contributing factors in each of the constructs. The study …
Perceptions Of Urban Forestry Employers, Andrew Benjamin
Perceptions Of Urban Forestry Employers, Andrew Benjamin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Urban forestry is still a relatively new area of science and is still trying to establish itself as a legitimate scientific field and profession. Often urban forestry and arboriculture are conflated, and urban forestry has yet to achieve much of what arboriculture has in terms of recognition its and establishment. Landscape architects, traditional foresters, environmental scientists, horticulturalists all may find themselves in positions that can be classified in the urban forestry profession, which shows this lack of a standard definition for what is an urban forester. While there are many significant, potential benefits to a properly managed urban forest resource …
Determination Of Material Parameters Of E-Glassepoxy Laminated Composites In Ansys, Mehdi Shahbazi
Determination Of Material Parameters Of E-Glassepoxy Laminated Composites In Ansys, Mehdi Shahbazi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Prediction of damage initiation and Evolution in composite materials are of particu- lar importance for the design, production, certification, and monitoring of an increasingly large variety of structures. In this study a methodology is presented to calculate the mate- rial properties for the progressive damage analysis (PDA) and discrete damage mechanics (DDM) in ANSYS RTM by using two sets of experimental data for laminates [0 2/904]S and [0/+/-40 4/01/2]S. The type of laminates to be used for material property determination are chosen based on a sensitivity study.;This method is based on fitting results calculated with PDA and DDM to experimental …
Mesozoic History Of The Southeastern Tibetan Plateau: Sediment Provenance, Paleoclimate, And Surface Elevation History, Fei Shang
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation presents new results of a multi-disciplinary investigation of the linkages between erosion, uplift and regional climate change associated with the Mesozoic accretionary tectonism in southeastern Tibet. We studied sedimentary record preserved in a robust and strategically-located geologic archive---the Qamdo basin system. Since tectonics can greatly influence the geomorphic and stratigraphic development of sedimentary basins, studying evolution of the Qamdo basin could provide useful insights into the tectonic information of the adjacent areas. The following questions are addressed in the three chapters of this thesis: • What are the sediment sources for the Mesozoic Qamdo basin? • Is there …
Risk Of Newly-Diagnosed Depression, Treatment And Its Economic Outcomes Among Elderly Medicare Beneficiaries With Incident Breast, Colorectal Or Prostate Cancer, Monira Mansour Alwhaibi
Risk Of Newly-Diagnosed Depression, Treatment And Its Economic Outcomes Among Elderly Medicare Beneficiaries With Incident Breast, Colorectal Or Prostate Cancer, Monira Mansour Alwhaibi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Depression is a highly prevalent chronic condition among the elderly cancer survivors. It is estimated that 5-25% of elderly cancer survivors suffer from depression. Depression co-existing with cancer is associated with many negative health consequences such as high mortality, poor health related quality of life and high healthcare utilization and expenditures. However, depression is treatable with pharmacotherapy, psychotherapy or combination of both. There are no studies that examine the variations in the risk of depression by cancer types and there are few studies that examined the rates of depression treatment among elderly with cancer. In addition, there is lack of …
Experiences Of Parents Of Children Adopted From Overseas: A Thematic Analysis Of Narratives, Ekaterina Anatolyevna Amarando
Experiences Of Parents Of Children Adopted From Overseas: A Thematic Analysis Of Narratives, Ekaterina Anatolyevna Amarando
Graduate Theses, Dissertations, and Problem Reports (ETD)
Parents from the United States adopt more children from overseas than parents from any other country. There are numerous factors that play a role in the decision to adopt internationally, and most families remain highly satisfied with the adoption outcome (Adoption Institute, 2010). However, families with internationally adopted children face numerous challenges during their adoption journey, and generally report a higher utilization of professional services than biological families (Adoption Institute, 2010). In this study I utilized a qualitative research design to examine experiences of parents who adopted children from other countries. Thematic analysis of family narratives was employed to examine …
The Challenges Faced By New Science Teachers In Saudi Arabia, Salman Alsharari
The Challenges Faced By New Science Teachers In Saudi Arabia, Salman Alsharari
Graduate Theses, Dissertations, and Problem Reports (ETD)
Growing demand for science teachers in the Kingdom of Saudi Arabia, fed by increasing numbers of public school students, is forcing the Saudi government to attract, recruit and retain well-qualified science teachers. Beginning science teachers enter the educational profession with a massive fullfilment and satisfaction in their roles and positions as teachers to educating children in a science classroom. Nevertheless, teachers, over their early years of practice, encounter numerous challenges to provide the most effective science instruction. Therefore, the current study was aimed to identify academic and behavioral classroom challenges faced by science teachers in their first three years of …
Well-Defined Lagrangian Flows For Absolutely Continuous Curves Of Probabilities On The Line, Mohamed H. Amsaad
Well-Defined Lagrangian Flows For Absolutely Continuous Curves Of Probabilities On The Line, Mohamed H. Amsaad
Graduate Theses, Dissertations, and Problem Reports (ETD)
It is known from Fluid Mechanics that, the time-evolution of a probability measure describing some physical quantity (such as the density of a fluid) is related to the velocity of the fluid by the continuity equation. This is known as the Eulerian description of fluid flow. Dually, the Lagrangian description uses the flow of the velocity field to look at the individual trajectories of particles. In the case of flows on the real line, only recently has it been discovered that "some sort'' of dual Lagrangian flow consisting of monotone maps is always available to match an Eulerian flow. The …
Diversity Outreach In Major League Baseball: A Stakeholder Approach, Shaun M. Anderson
Diversity Outreach In Major League Baseball: A Stakeholder Approach, Shaun M. Anderson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Despite the prevalence and magnitude of community engagement within professional sporting organizations, limited attention has been devoted to understanding the significance and impact of these activities to the success and survival of the organization (Garrard, 2007). Consequently, The focus of this dissertation focused on Major League Baseball (MLB) because this organization has established efforts for engaging individuals from diverse communities, but is still failing in their efforts of diversity and inclusion from an external stakeholder perspective. In 1989, MLB implemented programs (e.g., Reviving Baseball in Inner Cities (RBI), Urban Youth Academy (UYA) to help diversify their team roster and fan …
The Role Of Adenosine Monophosphate Activated Protein Kinase In Luteal Progesterone Production, Elizabeth Compton Bowdridge
The Role Of Adenosine Monophosphate Activated Protein Kinase In Luteal Progesterone Production, Elizabeth Compton Bowdridge
Graduate Theses, Dissertations, and Problem Reports (ETD)
Prostaglandin F2 alpha (PGF2&agr;) has in vivo luteolytic actions on the bovine corpus luteum (CL). Although PGF2&agr; is utilized extensively in livestock to synchronize estrus, its actions in vitro are controversial and do not always result in a reduction in progesterone (P4) secretion. The mechanism of action of PGF2&agr; is thought to involve activation of the phospholipase C-Ca2+ pathway. The luteolytic actions of PGF2&agr; are mediated through an elevation of cytosolic Ca2+ involving activation of protein kinase C (PKC). Expression of PKC isozymes and calcium/calmodulin-dependent protein kinase kinase 2 (CAMKK2) change as the CL develops to a mature stage. Either …
The Experience Of Transition As Told By First-Year, First-Generation Appalachian College Students, Jeffrey T. Bush
The Experience Of Transition As Told By First-Year, First-Generation Appalachian College Students, Jeffrey T. Bush
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study examines the transitional experiences of Appalachian first-generation students during their first year of college. Because first-generation status, alone, has a negative affect on student persistence (Ishitani, 2003; Paulsen & Martin Lohfink, 2005), this phenomenological inquiry explores perceptions and experiences of separation and adjustment as expressed by students through semi-structured interviews with Tinto's Theory of Student Departure (1993) as a theoretical framework. Tinto's theory states that students arrive at college with personal attributes, as well as intentions and commitment, however it is their perception of their transition from home culture into the college that can affect persistence. This study …
Development Of Graphene And Graphene-Nanoparticle Composites For Sensor Applications, Saurabh Chaudhari
Development Of Graphene And Graphene-Nanoparticle Composites For Sensor Applications, Saurabh Chaudhari
Graduate Theses, Dissertations, and Problem Reports (ETD)
The goal of this research was the synthesis of graphene and graphene nanocomposite for use as sensor materials. This dissertation describes the optimization of a novel approach to the synthesis of few layer graphene films on SiC, the modification of the graphene surface by wet chemical methods, the nucleation of nanoparticles to form graphene-nanoparticle composites, the fabrication of chemoresistive sensor structures from these materials, and the characterization of these surfaces and films.;In this work, the basic graphene synthesis method which uses halogen based plasma etching and ultra-high vacuum annealing (UHVA), has been optimized to reliably produce one, two, and three …
A Computational Study On The Effects Of Dynamic Roughness Application To Separated Transitional Flows Affected By Adverse Pressure Gradient, Gennaro Campitelli
A Computational Study On The Effects Of Dynamic Roughness Application To Separated Transitional Flows Affected By Adverse Pressure Gradient, Gennaro Campitelli
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study of transitional flows is considered crucial for many practical engineering applications. In fact, a comprehensive understanding of the laminar-turbulent transition phenomenon often helps to improve the overall performance of apparatuses such as airfoils, wind turbines, hulls and turbomachinery blades. In addition to understanding and prediction of transitional flows, active research continues in the area of boundary layer control, which includes control of phenomena such as flow separation and transition. For instance, optimum geometrical shaping may be followed by the adoption on the wall-surface of riblets to adjust pressure gradient and reduce drag. Further "flow control" may also be …
The Impact Of Model-Lead-Test Coaching On Parents' Implementation Of Reinforcement, Prompting, And Fading With Their Children With Autism Spectrum Disorder, Liyu Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Parents play an essential role in furthering the development of their children with special needs. They are being trained to be co-therapists for their own children. The goal is to improve the ways they interact with their children in order to create improvements in their children's everyday functioning. If the proper teaching strategies are consistently applied, a learner can significantly improve his/her performance of various life skills, including communication, self-care, social skills, along with other skill sets. Because adults' learning processes differ substantially from children's, it will be critical to utilize the "coaching" method that employs a Model-Lead-Test (MLT) approach …
Role Of Mitochondria In Tnf-Alpha Neurotoxicity In Stroke, Danielle N. Doll
Role Of Mitochondria In Tnf-Alpha Neurotoxicity In Stroke, Danielle N. Doll
Graduate Theses, Dissertations, and Problem Reports (ETD)
TNF-alpha is known to exacerbate infarct volume in animal models and elevated levels of TNF-alpha are correlated with worse outcomes in stroke patients. However, the mechanism is not well understood. TNF-alpha has been shown to be neurotoxic at high doses and after long exposure times which is not clinically relevant. Thus, we show for the first time that TNF-alpha at clinically relevant concentrations seen in the serum of stroke patients rapidly and profoundly decreases mitochondrial function resulting in neuronal cell death through activation of caspase 8 and cytochrome c release. A slight decrease in mitochondrial function is detrimental to neurons …
Computational Analysis Of Single Drops And Sprays For Spray Cooling Applications, Murat Dinc
Computational Analysis Of Single Drops And Sprays For Spray Cooling Applications, Murat Dinc
Graduate Theses, Dissertations, and Problem Reports (ETD)
Spray cooling is a key technology in the thermal management of the next generation electronic, aircraft and spacecraft systems. There have been relatively fewer computational studies of spray cooling because simulating all the detailed physics and dynamics of a spray consisting of millions of drops per second is computationally very expensive.;In this study, computational approaches have been used to analyze single drops and sprays for spray cooling applications. The commercially available Computational Fluid Dynamics (CFD) code ANSYS Fluent (versions 14, 14.5, 15) has been used to perform single drop and spray simulations on two desktop workstations and the High Performance …
Metal Oxide Nanoparticles: The Importance Of Size, Shape, Chemical Composition, And Valence State In Determining Toxicity, Katherine Dunnick
Metal Oxide Nanoparticles: The Importance Of Size, Shape, Chemical Composition, And Valence State In Determining Toxicity, Katherine Dunnick
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nanoparticles, which are defined as a structure with at least one dimension between 1 and 100 nm, have the potential to be used in a variety of consumer products due to their improved functionality compared to similar particles of larger size. Their small size is associated with increased strength, improved catalytic properties, and increased reactivity; however, their size is also associated with increased toxicity in vitro and in vivo. Numerous toxicological studies have been conducted to determine the properties of nanomaterials that increase their toxicity in order to manufacture new nanomaterials with decreased toxicity. Data indicates that size, shape, chemical …
Polyploidy Affects Growth, Fillet Composition, And Fatty Acid Profile In Two Year Old Rainbow Trout, Oncorhynchus Mykiss, Jeremy Lynn Everson
Polyploidy Affects Growth, Fillet Composition, And Fatty Acid Profile In Two Year Old Rainbow Trout, Oncorhynchus Mykiss, Jeremy Lynn Everson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Gonadal development is a dominant physiological process that alters growth and fat metabolism, thereby reducing fillet quality. Sterile, triploid (3N) female rainbow trout, generated by pressure-induced shock of zygotes 30 minutes after fertilization (3NP), are used to eliminate reduced growth and quality associated with gonadogenesis. However, this method does not produce 100% 3N offspring. Crossing a diploid (2N; fertile) female and a tetraploid (4N; fertile) male produces triploid offspring 100% of the time (3NC; sterile). This method is not widely used in the industry because it requires 4N brood stock. The current study examines growth, fatty acid composition, and fillet …
Halim El-Dabh's Derabucca Notation And Its Implication On Performance Practice, Ryan Joseph Frost
Halim El-Dabh's Derabucca Notation And Its Implication On Performance Practice, Ryan Joseph Frost
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this document is to aid a performer's interpretation and preparation of Halim El-Dabh's Sonic No. 7 and No. 10, The Miraculous Tale, and Sweet and Prickly Pear. This project highlights the composer's unique method of notating techniques for the derabucca as well as his innovative compositional style in the aforementioned works. The original notational systems employed in these works represent one of the few written attempts to communicate advanced derabucca performance techniques to a classically-trained percussionist in published repertoire. Both prescriptive and descriptive in nature, these notational systems are the most ornate and visual of El-Dabh's writing …
Do Humans Drive Spinal Cord With Limb Velocity Signal?, Kyla Galbreath
Do Humans Drive Spinal Cord With Limb Velocity Signal?, Kyla Galbreath
Graduate Theses, Dissertations, and Problem Reports (ETD)
The ability to move in the environment is crucial to the survival of all animals. Neural pathways that control locomotion can be described as a hierarchy, with multiple levels of control, and those ultimately converge on spinal pattern generators. Neural pathways controlling locomotion are hierarchical, highly integrated, and well characterized anatomically, but functional explanations are lacking. Previous computational modeling of the CPG has proposed that they essential signal driving these spinal networks are expressed in the modality of desired velocity. To date, no published research has empirically tested velocity as being the control signal of locomotion. The purpose of this …
Dynamic Calibration Of Drifting Sensor Arrays For Real-Time Monitoring, Zongyu Geng
Dynamic Calibration Of Drifting Sensor Arrays For Real-Time Monitoring, Zongyu Geng
Graduate Theses, Dissertations, and Problem Reports (ETD)
Traditional sensor calibration is restricted to mathematically relating the steady-state sensor responses to the target analyte concentrations to realize environment monitoring. However, commonly-used chemical sensors usually require a relatively long time, on the order of minutes, to reach steady-state operation, and exhibit nonlinear drifting behaviors. To achieve real-time monitoring of rapidly-changing environments while accommodating drifting behaviors, this work develops statistical methods for both forward descriptive calibration and inverse dynamic calibration of sensor arrays.;Forward calibration is performed based on experimental data. In this work, multivariate Gaussian processes (GPs) were adapted to obtain the forward calibration model, which quantifies the sensor response …
Development Of A Conservation Action Plan For The Eastern Hellbender (Cryptobranchus Alleganiensis Alleganiensis) In West Virginia, William J. Greathouse
Development Of A Conservation Action Plan For The Eastern Hellbender (Cryptobranchus Alleganiensis Alleganiensis) In West Virginia, William J. Greathouse
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Eastern hellbender (Cryptobranchus alleganiensis alleganiensis ) is the largest salamander in North America growing to 75 centimeters in length. This fully aquatic species is an indicator of good stream and river quality and has been considered to be in decline or rare throughout its range. This study focused on the current distribution of the Eastern hellbender at sites of historic occurrence in West Virginia in order to determine the species' current range and factors impacting its distribution in order to facilitate planned reintroductions and translocations of hellbenders reared in human care. The success of the reintroduction and translocation efforts …
Design Of Oxy-Coal Reactors For Calcium Carbide Production Using Cfd, Albio Gutierrez
Design Of Oxy-Coal Reactors For Calcium Carbide Production Using Cfd, Albio Gutierrez
Graduate Theses, Dissertations, and Problem Reports (ETD)
Oxy-coal combustion with recirculating flue gas is a promising technology in CO2 capture. This technology is intended to reduce emissions of CO2 and other pollutants, such as NOx and SO2. Since the CO2 concentration in flue gas is higher than in conventional air operation, CO2 capture is easier. Other unique applications of oxy-coal combustion are now possible due to the very high temperatures (circa 2000-2500°C) that can be generated with char/ O2 /CO 2 mixtures which in turn can be used to activate chemical reactions which can lead to high valued chemical products. This for example can be an economical …
"The Whistling Wife": Women And Popular Song In The Postbellum American South, Melanie J. Green
"The Whistling Wife": Women And Popular Song In The Postbellum American South, Melanie J. Green
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study discusses the practice of music-making by middle and upper class women in the nineteenth-century American South, and the ways in which the practice was continued in the decades following the Civil War amid changing class and gender politics. The study examines two sheet music collections, one from the South and one from the North, dating from the 1880s and 1890s. An examination of the content of these collections reveals differing attitudes over changing class and gender politics and acceptable practices for music-making in the North and South. A discussion of these young women and their families tells their …
The Influences Of Participation In An Elite Paralympic Military Program On The Self-Identity Of Active Duty Service Members With Acquired Disabilities, Lindsay M. Hammond
The Influences Of Participation In An Elite Paralympic Military Program On The Self-Identity Of Active Duty Service Members With Acquired Disabilities, Lindsay M. Hammond
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background/Purpose: To explore the lived experiences of active duty service members with acquired disabilities that participated in an elite military sport program to gain an enhanced perspective on how elite sport programming influences self-identity post injury. Methods: A phenomenological approach was employed, using a three phase semi-structured interview protocol to capture military journeys of four (4) service members who had sustained a physical disability as the result of a combat injury and chose to remain on active duty status as a part of a specialized unit designed to prepare service members for the Paralympics. Results: Three themes were identified with …