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Development Of A Micro-Depth Sensing Indentation Technique With Constant Load Control, Ailing Lin
Development Of A Micro-Depth Sensing Indentation Technique With Constant Load Control, Ailing Lin
Graduate Theses, Dissertations, and Problem Reports (ETD)
In material nano- and micro-indentation research, Young's modulus can be obtained based on the initial unloading stiffness of the load-depth curve. The accurate load and displacement measurement as well as high precision position control of the indenter are needed to achieve the required measurement resolution. The application of PZT actuator is often used to perform the indentation experiment. However, conventional PZT controllers can only provide displacement control. Furthermore, each PZT actuator only serves a specific PZT controller using its unique calibration factor. Thus, it is beneficial to develop a controller, which can carry out both load and displacement control algorithm, …
Analysis Of Timekeeper Implicates Antagonism Between Ck2 And Pp2a During Drosophila Neurogenesis, Ezgi Kunttas
Analysis Of Timekeeper Implicates Antagonism Between Ck2 And Pp2a During Drosophila Neurogenesis, Ezgi Kunttas
Graduate Theses, Dissertations, and Problem Reports (ETD)
It is increasingly becoming apparent that dynamic control of phosphorylation and dephosphorylation underlies the proper spatial and temporal activities of many signaling circuits including Notch (N). Emerging evidence suggests that protein kinase CK2 mediates the effects of N during Drosophila eye and bristle development via phosphorylation of E(spl) repressors. Previous studies in our laboratory shown that reducing levels/activity of CK2 elicits rough eyes due to excess R8 founders and ectopic and split bristles due to excess SOP's, both indicative of impaired lateral inhibition and N signaling. While these studies implicate a role for CK2 in the regulation of E(spl), the …
Properties And Function Of Somatostatin-Containing Inhibitory Interneurons In The Somatosensory Cortex Of The Mouse, Yunyong Ma
Graduate Theses, Dissertations, and Problem Reports (ETD)
GABAergic inhibitory interneurons play a pivotal role in balancing neuronal activity in the neocortex. They can be classified into different classes according to their variable morphological, electrophysiological, and neurochemical properties, including two major groups: parvalbumin-containing (PV+), fast-spiking (FS) cells and somatostatin-containing (SOM+) cells. Using transgenic mice, we identified two subgroups, distinct by all criteria, of SOM+ cells in the somatosensory (barrel) cortex of the mouse, one (called X94) in layer 4 and 5B, and the other one (X98) in deep layers (Ma et al., 2006). We found that X98 cells were calbindin-expressing (CB+), infragranular, layer 1--targeting "Martinotti" cells, and had …
Technology Use In A Middle School In 1997 And 2007, Melinda L. Marple
Technology Use In A Middle School In 1997 And 2007, Melinda L. Marple
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine if any changes in technology integration and adoption of computer technology had taken place at ABC Middle School from the initial pilot study in 1997 and the follow-up study in 2007. This research looked for changes in the teachers' computer anxieties, attitudes and computer use from the previous study. Research showed that teacher anxiety had an impact on the teachers' willingness to integrate the technology into their curriculum. So it is important to understand the anxiety level in order to assess the willingness-to-integrate level.;This study also looked at the computer technology infrastructure; …
Application Of Multi-Agents To Power Distribution Systems, Koushaly Nareshkumar
Application Of Multi-Agents To Power Distribution Systems, Koushaly Nareshkumar
Graduate Theses, Dissertations, and Problem Reports (ETD)
The electric power system has become a very complicated network at present because of re-structuring and the penetration of distributed energy resources. In addition, due to increasing demand for power, issues such as transmission congestion have made the power system stressed. A single fault can lead to massive cascading effects, affecting the power supply and power quality. An overall solution for these issues can be obtained by a new artificial intelligent mechanism called the multi-agent system. A multi-agent system is a collection of agents, which senses the environmental changes and acts diligently on the environment in order to achieve its …
Effects Of Cognitive Processing And Cell Phone Use While Driving, Michelle Leigh Sudhoff
Effects Of Cognitive Processing And Cell Phone Use While Driving, Michelle Leigh Sudhoff
Graduate Theses, Dissertations, and Problem Reports (ETD)
With 233 million cell phone subscribers in the United States at the end of the year 2006, and 73% of those subscribers talking on their cell phones while driving, the issue of safety on the roads has become a major one. While there has been widespread research on the causes of driver distraction, and comparisons among those causes, there has not been research conducted in order to evaluate the effects of visual imagery on driver performance. This research employed two types of programs to examine the response time to the presented stimuli, as well as missed targets among 16 subjects. …
Effects Of Induced Acute Phase Response In Ewes On Early Embryo Survival, Tina Lynn Dow
Effects Of Induced Acute Phase Response In Ewes On Early Embryo Survival, Tina Lynn Dow
Graduate Theses, Dissertations, and Problem Reports (ETD)
Early pregnant ewes, 5/6 day post coitus (dpc) were used as a model to study early embryonic loss via gram-positive bacterial infections, such as mastitis. Ewes 5/6 dpc were injected with a gram-positive bacteria cell wall component, peptidoglycan-polysaccharide (PG-PS), to induce an innate immune system acute phase response (APR). The induction of the APR and its reactant molecules, such as cytokines and acute phase proteins (APP), were initiated to study their effects on embryonic loss. Twenty Suffolk ewes were synchronized for estrus and bred by fertile rams. At 4 dpc ewes were anesthetized and catheters were surgically placed in the …
Application Of Machine Vision In Uavs For Autonomous Target Tracking, Joshua Patrick Effland
Application Of Machine Vision In Uavs For Autonomous Target Tracking, Joshua Patrick Effland
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research presents experimental results for the application of Machine Vision (MV) techniques to address the problem of target detection and tracking. The main objective is the design of a prototype "UAV" surveillance environment to emulate real-life conditions. The model environment for this experiment consists of a target simulated by a small electric train system, located at "ground" level, and a MV camera mounted on a motion-based apparatus located directly above the model setup. This system is meant to be a non-flying mockup of an aerial robot retrofitted with a MV sensor. Therefore, the final design is a two degree-of-freedom …
Web-Based Relay Management With Biometric Authentication, Brian Graeber
Web-Based Relay Management With Biometric Authentication, Brian Graeber
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis proposes a web-based system for managing digital relay settings. These relays are deployed in the power system to protect sensitive and expensive equipment from physical damage during system faults and overload conditions. Providing this capability exposes these devices to the same cyber security threats that corporations have faced for many years.;This thesis investigates the risks and requirements for deploying the proposed system. A breakdown in the protection that these relays provide would cause power outages. The cost of outages can be significant. Therefore cyber security is critical in the system design. Cyber security requirements for the power industry …
Feasibility And Optimum Design Study Of A Low Speed Wind Turbine Rotor System For Underground Communication Power, John E. Harman
Feasibility And Optimum Design Study Of A Low Speed Wind Turbine Rotor System For Underground Communication Power, John E. Harman
Graduate Theses, Dissertations, and Problem Reports (ETD)
A need has been recognized to have battery charging capabilities in underground mines, independent of outside AC power sources. In the event of emergency, the radios located throughout underground mines stay charged for periods insufficient to ensure the safety of trapped mineworkers. Air is always being distributed to supply oxygen and to dilute explosive gases throughout all sections of the mine. An idea to charge the batteries using the energy stored in the moving air was recently proposed. The feasibility of using a small wind turbine to charge the batteries in this airlflow will be addressed by this thesis. If …
Non-Redundant Roles Of E(Spl) Proteins During Drosophila Neurogenesis, Jee-Eun Kim
Non-Redundant Roles Of E(Spl) Proteins During Drosophila Neurogenesis, Jee-Eun Kim
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Enhancer of split Complex (E(spl)C) in Drosophila melanogaster encodes seven bHLH repressors that serve as the final effectors of the highly conserved Notch signaling pathway during the process of cell fate specification. These E(spl) proteins have been considered to be functionally redundant because of their structural similarity, and the observation that over-expression of individual E(spl) members leads to neural hypoplasia, in general. And additional compounding factor is that loss-of function alleles in individual E(spl) members have been unavailable. However, individual E(spl) members exhibit inordinate conservation through Drosophila evolution and are differentially expressed, findings which challenge the premise of functional …
Understanding The Motivations Of Ghanaian Bureaucrats, Christine Naa Norley Lokko
Understanding The Motivations Of Ghanaian Bureaucrats, Christine Naa Norley Lokko
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examines the factors that affect the work performance of Ghanaian bureaucrats. Three decades ago Robert Price (1975) examined the impact that kinship ties had on the motivation of Ghanaian bureaucrats. He found that Ghanaian bureaucrats behaved in particularistic fashions as opposed to acting in a universalistic manner, suggesting kinship was a major determinant of bureaucratic routine. This study followed the work of Price by replicating his mix of interviews and surveys, with the addition of questions that incorporate recent work on bureaucracy that suggest motivation involves a mix of solidary, functional, and pecuniary preferences (Brehm and Gates, 1997; …
Cognitions Of The Community: The Worldview Of U.S. Intelligence, David Alex Mastro Ii
Cognitions Of The Community: The Worldview Of U.S. Intelligence, David Alex Mastro Ii
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation attempts to determine what the worldview of U.S. intelligence looks like so that it can be incorporated into America's intelligence identity. I argue that this is necessary to gain a better understanding of why the agencies that comprise the U.S. Intelligence Community (IC) share several behaviors despite having different interests and preferences. To answer my research question, which asks what the worldview of U.S. intelligence is, I conceptualize the IC's core belief system about world politics (its worldview) as the five philosophical beliefs in an operational code. I hypothesize about how the IC views each of these cognitions …
Thresholds And Tolerance Of Physical Pain Among Young Adults Who Engage In Self-Injury, Katrina Mccoy
Thresholds And Tolerance Of Physical Pain Among Young Adults Who Engage In Self-Injury, Katrina Mccoy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Prevalence rates of non-suicidal self-injury among college students ranges from 17% to 38%. Research indicates that individuals with borderline personality disorder (BPD) who self-injure sometimes report an absence of pain during self-injury. Furthermore, self-injury in the absence of pain has been associated with more frequent suicide attempts. The present study examined pain thresholds and tolerance among 44 college students (11 self-injurious and 33 non-self-injurious). Pain thresholds and tolerance were measured using an algometer pressure device which has been used to produce pain previous laboratory research. Self-injurious participants had higher pain tolerances than those who do not engage in self-injury. In …
Bioinformatic Study Of Gamma-Secretase And Its Substrates, Fei Nan
Bioinformatic Study Of Gamma-Secretase And Its Substrates, Fei Nan
Graduate Theses, Dissertations, and Problem Reports (ETD)
gamma-Secretase is an enzymatic complex critical to amyloid formation and other important pathophysiological processes. Non-specific gamma-secretase inhibitors are not ideal for intervention of familial Alzheimer's disease. The four essential include Presenilin (PS1 or PS-2), APH-1, Pen-2, nicastrin (Nct). Also gamma-secretase cleaves a variety of substrates (over 30). But different sites are cleaved even in a single substrate and no consensus sequence for cleavage by gamma-secretase is identified. We hypothesize that consensus compositional sequence (or functional domain) in components of gamma-secretase and/or its substrates should exist during gamma-secretase regulation and specific gamma-secretase inhibitor based on such consensus sequence (or functional domain) …
Neuropsychological Functioning Of College Students With Attention Deficit Hyperactivity Disorder, Melanie Ann Nuszkowski
Neuropsychological Functioning Of College Students With Attention Deficit Hyperactivity Disorder, Melanie Ann Nuszkowski
Graduate Theses, Dissertations, and Problem Reports (ETD)
Individuals with Attention Deficit Hyperactivity Disorder (ADHD) often experience significant impairment in multiple life domains not only during childhood, but also throughout their adult lives. While there is no single litmus test for identifying ADHD, neuropsychological tests have been proposed as one means of enhancing identification of ADHD in adults. Theories of ADHD have suggested that deficits in executive functioning underlie the symptom appearance for ADHD; however, meta-analyses have suggested that non-executive functioning skills provide nearly equal discriminatory results. Given the increasing proportion of students with ADHD who are pursuing postsecondary education, the need for further research addressing the impact …
A Computer Forensic Response To Hard Drive Encryption, Joseph Daniel Painter
A Computer Forensic Response To Hard Drive Encryption, Joseph Daniel Painter
Graduate Theses, Dissertations, and Problem Reports (ETD)
Standard procedures used by law enforcement for evidence preservation require removing power from the computer and going further analysis in a digital forensics laboratory. With the advent of easy to use, highly accessible hard drive encryption, access to potential evidence becomes much more volatile problem than in the past. This paper will look at several encryption methods available on the commercial market, discuss their impact on current best practices for hard drive recovery, and propose new procedures to deal with the possibility of encrypted information on a target computer.
Mobilizing Movements, Mobilizing Contemporary Islamic Resistance, Rachael M. Rudolph
Mobilizing Movements, Mobilizing Contemporary Islamic Resistance, Rachael M. Rudolph
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent world events, ranging from international violence to elections, have propelled academics and policymakers to examine Islamic resistance movements more closely. Previous studies of such movements, in both the English and Arabic literature, has been limited to historical case studies. The lack of systematic cross-case comparisons has limited the development of generalizable propositions regarding movement mobilization. In a first effort to remedy this gap in the literature, this study examines the mobilization of Islamic resistance movements---the FIS, the PIJ, Hamas, the MNLF, the MILF and the ASG---in three different countries located in three different regions. Mobilization was examined utilizing the …
Three Essays On Current Account Dynamics, Cesar R. Sobrino
Three Essays On Current Account Dynamics, Cesar R. Sobrino
Graduate Theses, Dissertations, and Problem Reports (ETD)
Current account imbalances are always a concern for macro policymakers as they can lead to balance of payments crises. However, both governmental policy interventions and external economic fundamentals may affect the current account. This thesis empirically examines the effects of the policy interventions and shocks to external economic fundamentals on the current account.;In Chapter 1, I study the effect of the fiscal deficit on the current account in Peru. I test whether the twin deficit hypothesis holds after the stabilization program and structural reforms of 1991 took place. Even though the new regime was much more financially open, this hypothesis …
Essays On Remote Monitoring As An Emerging Tool For Centralized Management Of Decentralized Wastewater Systems, Clement Solomon
Essays On Remote Monitoring As An Emerging Tool For Centralized Management Of Decentralized Wastewater Systems, Clement Solomon
Graduate Theses, Dissertations, and Problem Reports (ETD)
According to the United States Environmental Protections Agency (USEPA), nearly one in four households in the United States depends on an individual septic system (commonly referred as an onsite system or a decentralized wastewater system) to treat and disperse wastewater. More than half of these systems are over 30 years old, and surveys indicate at least 10 to 20% might not be functioning properly. The USEPA concluded in its 1997 report to Congress that adequately managed decentralized wastewater systems (DWS) are a cost-effective and long-term option for meeting public health and water quality goals, particularly in less densely populated areas.;The …
Investigation Of Mud Filtrate Invasion Using Computational Fluid Dynamics, Suyoun Won
Investigation Of Mud Filtrate Invasion Using Computational Fluid Dynamics, Suyoun Won
Graduate Theses, Dissertations, and Problem Reports (ETD)
Despite continued research and developments in logging technology, logs processed by the prevalent standard methods continue to be influenced by formation damage and mud filtrate invasions. The mud-filtrate invasion and related formation damage due to drilling fluids can result in the misinterpreted values of rock and fluid properties in the reservoir which can affect the well plan. Well planning with accurate information of target reservoir is a very important part of any drilling procedure, as it would not only optimize drilling operation and completion but also maximizes production of oil and gas.;To produce hydrocarbons effectively, the wellbore must communicate with …
Profiling, Extracting, And Analyzing Dynamic Software Metrics, Jeffrey T. Zemerick
Profiling, Extracting, And Analyzing Dynamic Software Metrics, Jeffrey T. Zemerick
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis presents a methodology for the analysis of software executions aimed at profiling software, extracting dynamic software metrics, and then analyzing those metrics with the goal of assisting software quality researchers. The methodology is implemented in a toolkit which consists of an event-based profiler which collects more accurate data than existing profilers, and a program called MetricView that derives and extracts dynamic metrics from the generated profiles. The toolkit was designed to be modular and flexible, allowing analysts and developers to easily extend its functionality to derive new or custom dynamic software metrics. We demonstrate the effectiveness and usefulness …
Rates Of Swim Bladder Parasite Infection And Pit Tag Retention In Upstream Migrant American Eels Of The Upper Potomac River Drainage, Jennifer L. Zimmerman
Rates Of Swim Bladder Parasite Infection And Pit Tag Retention In Upstream Migrant American Eels Of The Upper Potomac River Drainage, Jennifer L. Zimmerman
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis involved two components: identification of the parasite Anguillicola crassus in American eels, Anguilla rostrata and PIT tag retention in eels in a laboratory setting. The recent spread of the swim bladder nematode parasite, Anguillicola crassus, in American eels has caused concern among biologists and fishery managers. A total of 244 yellow-phase American eels were collected at the Millville Dam eel ladder on the Shenandoah River, WV. Swim bladders were removed and examined for the presence of the nematode parasite. The number of parasites in each eel was recorded, and prevalence, intensity, and mean intensity were calculated. A swim …
The Effectiveness Of Using Cooperative Learning Method On Esl Reading Comprehension Performance, Students' Attitudes Toward Cl, And Students' Motivation Toward Reading Of Secondary Stage In Saudi Public Girls' Schools., Latifah A. Alharbi
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study investigated the effects the use of cooperative learning method in English as a second language reading comprehension performance and how it improves the students' second language, their attitudes toward cooperative learning, and their motivation toward reading. Sixty ESL Saudi high school students from The Third Secondary School in Arrass City participated in this study and where divided into two groups (experimental group vs. control group). A pretest-posttest control group design was employed. Data were analyzed using a one-way analysis of covariance (ANCOVA) to test the differences between the experimental and the comparison group. The results of this analysis …
Comparative Study Between Two Esl Writing Approaches: Computer Processing Microsoft Word Vs. Hand Writing Of Two Freshmen College Saudi Student Groups., Ayed T. Al-Harbi
Comparative Study Between Two Esl Writing Approaches: Computer Processing Microsoft Word Vs. Hand Writing Of Two Freshmen College Saudi Student Groups., Ayed T. Al-Harbi
Graduate Theses, Dissertations, and Problem Reports (ETD)
This comparative study investigated the effectiveness of two writing approaches, hand writing (using paper and pencil) and computer processing (using Microsoft Word), in improving the writing of English freshmen students at two colleges in Saudi Arabia. Three dependent variables: overall writing quality (OWQ), writing apprehension (WA), and attitudes toward writing with computer (ATWC) were measured based on two independent variables: gender and the medium used. The research was designed to assess whether students actually wrote better using word processing software than they did when writing with paper and pencil. One hundred college students studying English were selected from a population …
Design With Benefits : Combining Healthcare Step Programs And Design Tools To Make A Difference In Community Health, Emily E. Frye
Design With Benefits : Combining Healthcare Step Programs And Design Tools To Make A Difference In Community Health, Emily E. Frye
Graduate Theses, Dissertations, and Problem Reports (ETD)
I am aware that there is increasing emphasis being placed on designers pro actively designing services as opposed to simply creating artifacts. Looking past “selling” and moving toward enabling solutions that are for the greater good, this paper makes use of ethnographic contexts of communities involved to guide design. My thesis project designs a service plan and a program with artifacts. It is aimed at helping rural West Virginia Clinics intervene with unhealthy patients to help them prepare for a pro-active lifestyle. This program, named BeneFIT, was designed with user-centered methods and incorporates the Transtheoretical Model (TTM) developed by James …
Insights From The Field: Perceptions Of In-Home Interventionists Working In Appalachian Maryland., Benjamin T. Brauer
Insights From The Field: Perceptions Of In-Home Interventionists Working In Appalachian Maryland., Benjamin T. Brauer
Graduate Theses, Dissertations, and Problem Reports (ETD)
As No Child Left Behind continues to impact public K-12 education, educators continue to seek new ways in which to reach out to at-risk students. Many school administrators and school interventionists are using in-home interventions to assist families in facilitating their child’s success. These interventions range from simply bringing instructional materials to the home of a frequently absent student, to facilitating the delivery of mental health services in the home. While school officials are taking on additional roles and responsibilities to try and meet the growing expectations placed on the public K-12 educational system, many feel that they are doing …
A Genetic Variant Of The Adaptor Protein, Afap-110, Efficiently Activates C-Src Resulting In Podosome Formation., David A. Clump
A Genetic Variant Of The Adaptor Protein, Afap-110, Efficiently Activates C-Src Resulting In Podosome Formation., David A. Clump
Graduate Theses, Dissertations, and Problem Reports (ETD)
The actin filament associated protein of 110 kDA (AFAP-110) is a well-characterized protein composed of amino-terminal binding motifs that function upstream of a carboxy-terminal actin binding domain. In vitro studies demonstrate that the amino-terminal pleckstrin homology 1 (PH1) domain interacts with activated PKCα, relaying signals that activate Src family kinases via SH3 and SH2 binding. Serving as an adaptor protein, AFAP-110 relays signals that result in the assembly of motility structures. These findings could be of physiological as well pathological significance as AFAP-110 colocalizes with SFKs in the developing brain as well as in the glial-derived tumor, glioblastoma multiforme. More …
Maternal/Fetal Attachment: Associations Among Family Relationships, Maternal Health Practices, And Antenatal Attachment., Debra Cunningham Facello
Maternal/Fetal Attachment: Associations Among Family Relationships, Maternal Health Practices, And Antenatal Attachment., Debra Cunningham Facello
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background. Maternal/fetal attachment plays an important role in the health of pregnant women and their unborn babies. In addition, maternal attachment is an important component of maternal identity and is essential in promoting healthy growth and development in the child. The proposed theoretical Model of Maternal/Fetal Attachment provides a framework for understanding and investigating this process. Purpose. The primary purpose of this research was to develop and test relationships within a model of maternal/fetal attachment for use in research and practice. Methods. The proposed theoretical relationships between family relationships, maternal health practices, and antenatal attachment were examined using quantitative analysis. …
Photosynthetic Capacity Of Deciduous Tree Species Growing In The Duke Face Experiment With Elevated Carbon Dioxide And Nitrogen Fertilization., Christopher R. Buyarski
Photosynthetic Capacity Of Deciduous Tree Species Growing In The Duke Face Experiment With Elevated Carbon Dioxide And Nitrogen Fertilization., Christopher R. Buyarski
Graduate Theses, Dissertations, and Problem Reports (ETD)
Forested ecosystems are the largest terrestrial sinks for carbon dioxide (CO2) on earth and are important in mitigating the negative effects of human induced increases of atmospheric CO2. Trees fix CO2 into sugars by using the nitrogen demanding processes of photosynthesis. Modeling and empirical studies have shown stimulations in photosynthesis under elevated CO2 conditions but the response decreases as plant demand for N increases. I examined the interaction of CO2 and N on photosynthetic capacity of Liquidambar styraciflua trees growing in the overstory and four deciduous hardwood species, including Acer rubrum, Carya glabra, Ulmus alata, and Liquidambar styraciflua, in the …