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Real-Time And Energy-Efficient Routing For Industrial Wireless Sensor-Actuator Networks, Chengjie Wu

McKelvey School of Engineering Graduate Student Theses & Dissertations

With the emergence of industrial standards such as WirelessHART, process industries are adopting Wireless Sensor-Actuator Networks (WSANs) that enable sensors and actuators to communicate through low-power wireless mesh networks. Industrial monitoring and control applications require real-time communication among sensors, controllers and actuators within end-to-end deadlines. Deadline misses may lead to production inefficiency, equipment destruction to irreparable financial and environmental impacts. Moreover, due to the large geographic area and harsh conditions of many industrial plants, it is labor-intensive or dan- gerous to change batteries of field devices. It is therefore important to achieve long network lifetime with battery-powered devices.

This dissertation …

Mitigating The Effects Of Climate Change With Wind Energy And Gis, Rachael Isphording, Richard Snow, Mary Snow

Publications

The climate is changing, and humans are heavily exacerbating these changes. As the effects of climate change are being felt across the planet, scientists and policy makers are uniting to increase mitigation efforts and are researching renewable, clean energy sources to reduce the amount of greenhouse gas emissions released into the atmosphere during energy production. Of the different renewable energy technologies, wind energy is one of the most researched and implemented. Over the past twenty years, researchers have been applying Geographic Information Systems (GIS) to their climate change studies. GIS allows the user to spatially view, manipulate, and analyze data …

Human Trafficking & Native Peoples In Oregon: A Human Rights Report, Haley Weedn, Joseph Scovel, Jason Juran

American Indian Law Journal

No abstract provided.

Sovereignty, Economic Development, And Human Security In Native American Nations, W. Gregory Guedel

American Indian Law Journal

No abstract provided.

Aicpa Code Of Professional Conduct Effective December 15, 2014, Unless Early Implemented. Updated For All Official Releases Through December 15, 2014, American Institute Of Certified Public Accountants (Aicpa)

AICPA Professional Standards

No abstract provided.

Finite Element Analysis Simulations Of Micro And Nano-Electromechanical Sensors For Design Optimization, Nicholas Frank Deroller

Theses and Dissertations

Micro and Nano-electromechanical sensors (MEMS and NEMS) provide a means of actively sensing minute changes in the surrounding environment. Small changes in temperature, momentum, and strain may be sensed in passive modes while greater sensing possibilities exist in active modes. Theoretical femto-gram resolution mass detection and heated element sensing methods may be used while volatile organic compound (VOC) sensing may be achieved when combined with a functionalization layer or device heating. These devices offer a great reduction in cost and offer increased mobility by allowing a "lab-on-chip" solution for the prospective user while also greatly reducing the amount of energy …

Periodontal Microorganisms, Obesity, Chronic Inflammation, And Type 1 Diabetes, Georges Joseph Nahhas

Theses and Dissertations

Periodontal disease is a low-grade chronic inflammation in the tissues surrounding the teeth caused by multiple, mostly gram-negative pathogens. It is associated with diabetes, obesity, and chronic inflammation. The specific roles that periodontal microorganism play in these conditions are not well-studied. Hereby, we explored how periodontal bacteria from sub gingival plaque clustered in youth with and without type 1 diabetes, and how such patterns related to body-mass-index percentile (BMI percentile), C-reactive protein (CRP) and adiponectin. Cross-sectional data were collected from 105 youth with type 1 diabetes and 71 without diabetes. Participants were between 12 and 19 years of age receiving …

Culturally Relevant Teaching: A Case Study On Teaching Statistics In The High School Setting, Lashaune Natae Smith

Theses and Dissertations

Public school enrollment is increasing for African American, Hispanic, Asian/Pacific Islander, and American Indian/Alaskan Native students. However, minority and immigrant children tend to perform lower academically than White, middle-class students. Hence, there is a growing need to reform pedagogical practices for underachieving student populations to have improved chances for school success. Culturally relevant teaching is an effective approach to addressing the social and academic needs of minority students. The purpose of this study was to examine culturally relevant teaching in high school statistics classrooms of predominantly African American students. Using a qualitative case study research design, this study examined two …

Marine Population Connectivity: Range Boundaries And Climate Change, Rhiannon Leigh Rognstad

Theses and Dissertations

Population connectivity, particularly in open systems, is an important metric for understanding population-level processes on both ecological and evolutionary timescales. In coastal marine systems, adults are typically sedentary and dispersal occurs primarily during a larval stage when individuals are transported in ocean currents. Because coastal marine populations exist as networks of interconnected subpopulations, variation in the magnitude and extent of population connectivity can have profound effects on population dynamics and species distribution limits. Connectivity is a complex process, affected by a multitude of factors, including adult inputs and physical dispersal, which operate at multiple scales and may interact. This dissertation …

Exploration Of Implicit Bias On Multidisciplinary Team Members When Referring African American Students For Special Education Services, Twana Romona Fletcher

Theses and Dissertations

The disproportionality or overrepresentation of African American students in special education is a longstanding problem that continues to be prevalent today. There are numerous reasons why this phenomenon continues to persist including but not limited to implicit bias among multidisciplinary team members (MDT). One function of the MDT is to decide if a student needs to be referred for special education services. Therefore, the purpose of this study was to examine the decision making processes of the MDT members to determine if implicit bias impacted their decision to refer an African American student for special education services. This qualitative study …

Influence Of Defects In Epitaxial Graphene Towards Material Growth And Device Performances, Shamaita Shithi Shetu

Theses and Dissertations

Since its invention in 2004, Graphene, a two dimensional array of SP2 bonded carbon atoms has received significant interest by the scientific community due to its unique electrical, optical and mechanical properties. A promising route to the synthesis of large-area graphene, is epitaxial graphene formed by sublimation of silicon atoms from Silicon carbide at elevated temperatures (>1200oC). Although the electronic and mechanical properties of graphene with perfect atomic lattice are outstanding, the structural defects, which may appear during graphene growth, can influence the growth mechanism and material properties. However, deviations from perfection, i.e. introducing dopants in semiconductors often considered …

Bibimbap: Identity Construction In Korean Third Culture Kids During Higher Education, Megan I. Beard

Theses and Dissertations

Amidst increasing interconnectedness and transmigration of the 21st century, a number of families are leaving South Korea for business, work, or education; their children are raised as Third Culture Kids (TCKs)—children who accompany their parents abroad. This study used the lens of cultural globalization to examine how Korean TCKs used their life experiences to inform their identity construction, especially during higher education. Participants were Korean students and recent alumni from universities in Korea, the United States, and abroad who had spent at least three childhood years living outside Korea with their families. Data were collected through a series of unstructured …

Determining The Change Styles Preferences Of Principals In South Carolina's Secondary Schools With A Background In The Fine Arts, Sterling Bernard Harris

Theses and Dissertations

Very little research has been published regarding the change style preferences and leadership styles of secondary principals in South Carolina who have a common background. The purpose of this mixed methods study was to identify the preferred change style preference of principals in South Carolina that have an arts background and the change style preferences of principals without an arts background. This study would also determine if these styles were the same or different. Quantitative data were gathered from online administration of the Change Style Indicator (CSI), the South Carolina Department of Education, and the South Carolina Association of School …

Impacts Of Adolescents' Emotional And Behavioral Concerns And Social Skills On Parenting Stress, Marissa Miller

Theses and Dissertations

Minimal literature has examined predictors of parenting stress for parents of adolescents and what may contribute to the impact of these predictors, particularly those regarding adolescent behavior. The current study sought to evaluate whether adolescents’ internalizing and externalizing behaviors significantly predicted parenting stress and whether adolescent social skills moderated the relationship. Covariates of gender, age, ethnicity, and socioeconomic status were entered first into a multiple regression moderation model and followed by internalizing and externalizing behaviors, social skills, and interaction terms, respectively. The overall model explained 19 percent of the variance in parenting stress. While internalizing behaviors significantly predicted parenting stress, …

An Analysis Of The Cultural Invariance Of A Visual-Motor Integration Measure, Emma Kate C. Wright

Theses and Dissertations

As diverse populations within schools increase, the need for culturally-sensitive assessment is essential; however, test of ability vary in their degree of influence from culture. No test is “culture free,” but the low-linguistic demands on test of visual-motor integration (VMI) make them appropriate for use with diverse populations. Variation in VMI test performance due to cultural factors has negative implications for test interpretation and use with diverse populations because of VMI’s significant association with school readiness, academic achievement, social-emotional functioning, and neuropsychological assessment. The current study explored the cultural invariance of the Bender Motor Gestalt Test, Second Edition (BG-II), a …

Characterization Of Electrodeposited Copper Foil Surface Roughness For Accurate Conductor Power Loss Modeling, Michael B. Griesi

Theses and Dissertations

As computer data rates have increased, designers observed that the standard models for estimating the impact of copper foil surface roughness on conductor loss are limited to a few GHz. The more recent snowball model (a “snowball” estimation of the Huray Model) has demonstrated improved conductor loss predictions up to 50 GHz by estimating the necessary parameters using reasonable assumptions about the geometric surface features of electrodeposited copper foil. Since then, the Huray Model has been incorporated into commercial electromagnetic field simulators. However, a standard method of characterizing the electrodeposited copper foil used in high-speed circuits to directly implement the …

Life Satisfaction And Academic Performance In Early Adolescents: Evidence For Reciprocal Relationships, Zi Jia Ng

Theses and Dissertations

Student well-being remains a relatively neglected topic despite its intimate link to positive school outcomes. As academic achievement is the yardstick of student success and school accountability, school-based mental health research and practice have focused primarily on the assessment and treatment of learning and behavioral problems. This shortterm longitudinal study sought to establish the role of student subjective well-being in academic achievement. Based on the engine model of well-being (Jayawickreme, Forgeard, & Seligman, 2012), the study focused on life satisfaction as a process variable and academic performance as an outcome variable. Using two waves (five months apart) of data, the …

When Do Political Ideologies Affect Brand Extension Evaluation? The Role Of Analytic Versus Holistic Mindsets, Cristobal Barra

Theses and Dissertations

Political ideologies are becoming an important focus of attention in the marketing literature. This research examines the impact of political ideologies on consumers’ evaluation of brand extensions. In a series of six studies, this work shows how, and under what conditions, liberals evaluate brand extensions differently than conservatives. Because liberals are more open to new experiences, and tend to seek novelty, while conservatives show stronger preferences for order, structure, and conventional things, liberals are expected to react more favorably to new stimuli, as in the case of dissimilar brand extensions. However, the effects of political ideologies are dependent on some …

The Roles Of Gsk-3ss And Apc In Cytoplasmic Dynein Regulation, Feng Gao

Theses and Dissertations

Dynein is a microtubule minus-end directed molecular motor, participating in a broad range of cellular functions, such as organelle transport, cell migration and mitosis. Dynein dysfunction is linked to many diseases including ALS, schizophrenia, Alzheimer’s disease, Parkinson’s disease and cancer. The mechanism of dynein regulation is largely unknown. We have provided evidence that glycogen synthase kinase 3β (GSK-3β) directly regulates dynein in both neurons and non-neuronal cells. GSK-3β interacts with and phosphorylates dynein in vitro. Dynein phosphorylation by GSK-3β reduces its interaction with Ndel1, a regulator contributing to dynein force generation. Dynein motility is stimulated both by pharmacological GSK-3β inhibitors …

Relationships Between Prior Experiences, Current Teaching Contexts, And Novice Teachers' Use Of Concrete Representation For Mathematics Instruction, Elizabeth Lee Johnson

Theses and Dissertations

This case study documents the perceived influences on three novice elementary teachers’ use of concrete representations for teaching mathematics. In order to develop mathematical proficiency, students need access to a variety of representations (i.e. pictures, words, symbols, concrete materials, and real world contexts) to make sense of mathematical ideas. Three sources of data were collected: video-recorded lessons, interviews, and a focus group. Analyses indicated that although concrete representations were accessible to all three teachers, they were least used among the available representations. Verbal expression was most prominent, followed closely by abstract written symbols. Technology, which was not one of the …

Comprehensive Joint Time-Frequency Analysis Toward Condition Based Maintenance Regimes For Electrical And Mechanical Components, David Lee Coats

Theses and Dissertations

Based upon a framework of time-frequency analysis, we outline condition based maintenance (CBM), or maintenance only upon evidence of need, for both electrical and mechanical systems. We apply novel time-frequency cross-correlation metrics to helicopter drivetrain systems and electrical cables as remaining useful life assessments by non-destructive and non-invasive tests. In both cases, these metrics for health assessment provide a basis for diagnostic and prognostic analysis of underlying systems and components by performing accelerated condition tests on actual mechanical and electrical systems. We present novel time-frequency domain vibration analysis of a gearbox failure in an AH-64 Apache drivetrain testbed and quantify …

Methods For Identifying Regions Of Brain Activation Using Fmri Meta-Data, Meredith A. Ray

Theses and Dissertations

Functional neuroimaging is a relatively young discipline within the neurosciences that has led to significant advances in our understanding of the human brain and progress in neuroscientific research related to public health. Accurately identifying activated regions in the brain showing a strong association with an outcome of interest is crucial in terms of disease prediction and prevention. Functional magnetic resonance imaging (fMRI) is the most widely used method for this type of study as it has the ability to measure and identify the location of changes in tissue perfusion, blood oxygenation, and blood volume. In practice, the three-dimensional brain locations …

Mcp-1 In Colorectal Cancer: Benefits Of Exercise, Jamie Lee Mcclellan

Theses and Dissertations

The etiology of colon cancer is a complex phenomenon that involves both genetic and environmental factors. However, only about 20% have a familial basis with the largest fraction being attributed to environmental causes that can lead to chronic inflammation. Tumors associated macrophages drive the pro-inflammatory response in the tumor micro-environment and are associated with poor prognosis in certain cancers. Monocyte chemoattractant protein 1 (MCP-1) is thought to be the most important chemokine for recruitment of macrophages to the tumor microenvironment. In chapter 1, we examined the timing and magnitude of the intestinal inflammatory cytokine response in relation to tumorigenesis in …

The Geologic Implications Of The Factors That Affected Relative Sea-Level Positions In South Carolina During The Pleistocene And The Associated Preserved High-Stand Deposits, William Richardson Doar Iii

Theses and Dissertations

This work utilizes the current understanding of South Carolina geology to provide a stratigraphic review of the late-Pliocene and Pleistocene marine deposits. Almost two centuries of recorded geological study includes geomorphic and stratigraphic units that were described, proposed, revised, abandoned, and revived. Along with the history of the age assignments, changes in geological time scales, and the changes in the understanding of geological concepts, this review is necessary because two concurrent and conflicting stratigraphies exist for late-Pliocene and Pleistocene marine sediments that record multiple sea-level transgressions that were more often destructive than constructive. The result, when tested against existing geological …

Piezotransistive Iii-V Nitride Microcantilever Based Mems/Nems Sensor For Photoacoustic Spectroscopy Of Chemicals, Abdul Hafiz Ibne Talukdar

Theses and Dissertations

Microcantilevers are highly attractive as transducers for detecting chemicals, explosives, and biological molecules due to their high sensitivity, micro-scale dimensions, and low power consumption. Though optical transduction of the mechanical movement of the microcantilevers into an electrical signal is widely practiced, there is a continuous thrust to develop alternative transduction methods that are more conducive to the development of compact miniaturized sensors. Piezoelectric and piezoresistive transduction methods are two of the most popular ones that have been utilized to develop miniaturized sensor systems. Piezoelectric cantilevers, which are commonly made of PZT film, have demonstrated very high sensitivity; however, they suffer …

A Legal Analysis Of Court Cases And Administrative Investigations Related To Violations Of The Clery Act: Getting Good From The Bad And The Ugly, Tiffany Nichole Richardson

Theses and Dissertations

College brochures paint pictures of beautiful campuses, diverse student populations, renowned professors, and the best educational programs. What colleges never include in those brochures are the ugly crime statistics. In 2012, higher education institutions reported 41,708 liquor arrests, 20,486 burglaries, 4,837 forcible sex offenses, 951 hate crimes, and 31 murders. The reporting requirement, along with other regulations, has been required of institutions of higher education since 1990 under the Jeanne Clery Disclosure of Campus Security Policy and Campus Crime Statistics Act, yet so many colleges and universities are facing lawsuits, investigations, settlements, and fines for failing to comply. This legal …

Ferric Reductases And Transporters That Contribute To Mitochondrial Iron Homeostasis, Anshika Jain

Theses and Dissertations

Iron (Fe) is the fourth most abundant element in the Earth’s crust, yet the availability of Fe to plants is often limited. This is because in most soil types, Fe precipitates as ferric-oxyhydroxy complexes, making it unavailable for uptake by plants. While the mechanisms involved in Fe uptake from the soil are relatively well understood, the mechanisms involved in its further distribution to the aerial portion of the plant and to subcellular compartments are not fully understood. During Fe deprivation, plants up-regulate root Fe acquisition machinery. How plants sense Fe deprivation and tie the Fe status of the plant to …

Toward The Combinatorial Development Of Hydrophobic-Tagged Antifolate-Directed Degradation Of Human Thymidylate Synthase, Daniel J. Menasco

Theses and Dissertations

Direct post-translational control over a protein of interest (POI) can be exploited by manipulating the cells protein quality-control systems responsible for either intracellular turnover through ubiquitination (POI half-life) or repairing and degrading misfolded proteins.1 In an effort to target and degrade a high value POI we selected the enzyme human thymidylate synthase (TS) for post-translational degradation through ligand-directed ubiquitination and hydrophobic tagging. Thymidylate synthase catalyzes the reductive methylation of 2’-deoxyuridine monophosphate (dUMP) to 2’-deoxythymidine monophosphate (dTMP). As the de novo source of dTMP the regulation of intracellular TS is strictly controlled by ubiquitinindependent proteasomal degradation mediated by an internal TS-degron …

Cationic Metallocene-Containing Polymers: From Synthesis To Applications, Jiuyang Zhang

Theses and Dissertations

Metallopolymers, with the combination of metals and polymeric framworks, have attracted a lot of attention during the past decades. The development of metallopolymers has been largely driven by the desire to combine the synthetic efficiency and versatility of an organic polymer framework with the unique redox, responsive and catalytic properties of inorganic metals. Among different kinds of metallopolymers, metallocene-containing polymers， have been widely utilized for applications ranging from electrochemical sensors to templates for advanced inorganic catalysts to battery materials, due to their unique physicochemical properties. In the first part of my thesis, we showed controlled/living polymerization strategies to prepare well-defined …

Grand Prix: A Trainer's Guide To Show Ring Success, Lauren Rebecca Allen

Theses and Dissertations

This is a memoir of my experiences as a horse lover and professional horse trainer, and the startling parallels I discovered in the Los Angeles equestrian and entertainment industries. Both worlds revolve around commodifying something that is rooted in beauty but somehow gets bruised in the process of spinning art into business. I found that my taste for romance and adventure spurred me to new heights and simultaneously crashed against reality. In pursuit of the big prizes, I was willing to slowly sell off the things I cared about most to get what I wanted, until I woke up to …