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This thesis examines the modeling, analysis, and control system design issues for scramjet powered hypersonic vehicles. A nonlinear three degrees of freedom longitudinal model which includes aero-propulsion-elasticity effects was used for all analysis. This model is based upon classical compressible flow and Euler-Bernouli structural concepts. Higher fidelity computational fluid dynamics and finite elementmethods are needed formore precise intermediate and final evaluations. The methods presented within this thesis were shown to be useful for guiding initial control relevant design. The model was used to examine the vehicles static and dynamic characteristics over the vehicles trimmable region. The vehicle has significant longitudinal …

Contributors

Korad, Akshay Shashikumar, Rodriguez, Armando A, Tsakalis, Konstantinos S, et al.

Created Date

2010

Since scholars first turned their attention to the subject some eighty years ago, one major area of contention in the study of Anglo-Saxon wills has been the function of the written will within Anglo-Saxon culture. Verbal agreements, formalized through oral ceremonies and symbolic actions, were recognized as legally binding; however, many of these agreements were also recorded in writing. Many scholars argue that the written document was superfluous;oral ceremonies were written down only in the case of memory failure and the documents themselves had no real performative function. Others see the existence of the written will to be evidence of …

Contributors

Castle, Kasandra Marie, Bjork, Robert, Maring, Heather, et al.

Created Date

2010

Prognostics and health management (PHM) is a method that permits the reliability of a system to be evaluated in its actual application conditions. This work involved developing a robust system to determine the advent of failure. Using the data from the PHM experiment, a model was developed to estimate the prognostic features and build a condition based system based on measured prognostics. To enable prognostics, a framework was developed to extract load parameters required for damage assessment from irregular time-load data. As a part of the methodology, a database engine was built to maintain and monitor the experimental data. This …

Contributors

Varadarajan, Gayathri, Liu, Huan, Ye, Jieping, et al.

Created Date

2010

The following study evaluated the effectiveness of a self-monitoring strategy on independent work behavior. The three subjects were in first grade, seven years old, identified with mild mental retardation (MIMR), and had an Individualized Education Plan (IEP) with targeted functional academic and behavior goals. The purpose of this study was to investigate the effect of a self-monitoring strategy on on-task independent work behavior and task completion. The research sought to determine whether or not a self-monitoring strategy would affect on-task independent work behavior and task completion. A multiple baseline across subjects design was used. Data were collected using a frequency …

Contributors

Coughlin, Jennifer Henderson, Mccoy, Kathleen, Kenzer, Amy, et al.

Created Date

2010

Continuous advancements in biomedical research have resulted in the production of vast amounts of scientific data and literature discussing them. The ultimate goal of computational biology is to translate these large amounts of data into actual knowledge of the complex biological processes and accurate life science models. The ability to rapidly and effectively survey the literature is necessary for the creation of large scale models of the relationships among biomedical entities as well as hypothesis generation to guide biomedical research. To reduce the effort and time spent in performing these activities, an intelligent search system is required. Even though many …

Contributors

Kanwar, Pradeep, Davulcu, Hasan, Dinu, Valentin, et al.

Created Date

2010

The existing compact models can reproduce the characteristics of MOSFETs in the temperature range of -40oC to 125oC. Some applications require circuits to operate over a wide temperature range consisting of temperatures below the specified range of existing compact models, requiring wide temperature range compact models for the design of such circuits. In order to develop wide temperature range compact models, fourteen different geometries of n-channel and p-channel MOSFETs manufactured in a 0.18μm mixed-signal process were electrically characterized over a temperature range of 40 K to 298 K. Electrical characterization included ID-VG and ID-VD under different drain, body and gate …

Contributors

Kathuria, Achal, Barnaby, Hugh, Schroder, Dieter K, et al.

Created Date

2010

ABSTRACT This study explored the functions of dialogue in emerging adults' moral turning points. Through purposive sampling, the researcher interviewed 10 emerging adults between 25 and 30 years old about experiences of turning point conversations during the years of 18 and 25. This study employed constant comparative and grounded theory methodologies to analyze messages reported in memorable conversations during this period. Results indicated that dialogue functioned to educate, disturb, and maintain emerging adults' moral perception during this period of moral reorientation. Subcategories under each included dialogue that functioned to explain, invite, warn, direct or instruct, challenge, persuade, agitate, expose, inquire, …

Contributors

Danaher, Joshua, Waldron, Vincent R, Ramsey, Ramsey E, et al.

Created Date

2010

The purpose of this study was to explore current pedagogical approaches of undergraduate directing curricula in selected U.S. institutions of higher learning. Building on the work of Clifford Hamar and Anne Fliotsos, the thesis builds a foundation for further study of contemporary directing pedagogy. Fourteen course syllabi were collected voluntarily from members of The Association for Theatre in Higher Education (ATHE) and served at the primary source material. They were interpreted and analyzed qualitatively for components that identified the methods and philosophies of the instructor and/or institution. From these syllabi, the researcher found 11 "skill categories" which cover all potential …

Contributors

Welch, Peter Benjamin, Saldana, Johnny, Gharavi, Lance, et al.

Created Date

2010

The field of Structural Health Monitoring (SHM) has grown significantly over the past few years due to safety and performance enhancing benefits as well as potential life saving capabilities offered by technology. Current advances in SHM systems have lead to a variety of techniques capable of identifying damage. However, few strategies exist for using this information to quickly react to environmental or material conditions needed to repair or protect the system. Rather, current systems simply relay this information to a central processor or human operator who then decides on a course of action, such as altering the mission or scheduling …

Contributors

Garcia, Michael, Sodano, Henry A, Jiang, Hanqing, et al.

Created Date

2010

Electronic devices are gaining an increasing market share in the medical field. Medical devices are becoming more sophisticated, and encompassing more applications. Unlike consumer electronics, medical devices have far more limitations when it comes to area, power and most importantly reliability. The medical devices industry has recently seen the advantages of using Flash memory instead of Read Only Memory (ROM) for firmware storage, and in some cases to replace Electrically Programmable Read Only Memories (EEPROMs) in medical devices for frequent data storage. There are direct advantages to using Flash memory instead of Read Only Memory, most importantly the fact that …

Contributors

Hag, Eslam E., Kozicki, Michael N, Schroder, Dieter K, et al.

Created Date

2010

The U.S. Army Medical Command has been testing a leadership based structure to increase the performance of delivering construction and facility services in its system of $600M of construction and 26 major hospital facilities in the U.S. The organizational requirement was to minimize the management and oversight of contractors and simultaneously increase project performance. The research proposes that a leadership based structure can supplement the perception, preplanning, and risk minimization capability of a contractor's project manager, thus increasing the project performance (on time, within budget, and meeting expectations) and decreasing client management requirement. The projects were delivered in a best …

Contributors

Malhotra, Neha, Kashiwagi, Dean T, Sullivan, Kenneth, et al.

Created Date

2010

In the past, it has been assumed that measurement and predictive invariance are consistent so that if one form of invariance holds the other form should also hold. However, some studies have proven that both forms of invariance only hold under certain conditions such as factorial invariance and invariance in the common factor variances. The present research examined Type I errors and the statistical power of a method that detects violations to the factorial invariant model in the presence of group differences in regression intercepts, under different sample sizes and different number of predictors (one or two). Data were simulated …

Contributors

Olivera, Margarita, Millsap, Roger E., Aiken, Leona S., et al.

Created Date

2010

In the United States, recreational female golfers give up golf at twice the rate of recreational male golfers. This study explored the causal attributions of 240 recreational golfers after a practice session at a public golf facility. Attributions can be adaptive or maladaptive after a performance and can influence subsequent motivation to engage in a similar task again. It was hypothesized that male and female golfers would make significantly different attributions for their performance and that female golfers' attributions would be maladaptive. As the attrition rate for female golfers is highest in the first five years, it is also hypothesized …

Contributors

Shapcott, Susan, Husman, Jenefer, Brem, Sarah, et al.

Created Date

2010

The Resource Description Framework (RDF) is a specification that aims to support the conceptual modeling of metadata or information about resources in the form of a directed graph composed of triples of knowledge (facts). RDF also provides mechanisms to encode meta-information (such as source, trust, and certainty) about facts already existing in a knowledge base through a process called reification. In this thesis, an extension to the current RDF specification is proposed in order to enhance RDF triples with an application specific weight (cost). Unlike reification, this extension treats these additional weights as first class knowledge attributes in the RDF …

Contributors

Cedeno, Juan Pablo, Candan, Kasim S, Chen, Yi, et al.

Created Date

2010

An investigation of phase noise in amplifier and voltage-controller oscillator (VCO) circuits was conducted to show that active direct-current (DC) bias techniques exhibit lower phase noise performance than traditional resistive DC bias techniques. Low-frequency high-gain amplifiers like those found in audio applications exhibit much better 1/f phase noise performance and can be used to bias amplifier or VCO circuits that work at much higher frequencies to reduce the phase modulation caused by higher frequency devices. An improvement in single-side-band (SSB) phase noise of 15 dB at offset frequencies less than 50 KHz was simulated and measured. Residual phase noise of …

Contributors

Baldwin, Jeremy Bart, Aberle, James, Bakkaloglu, Bertan, et al.

Created Date

2010

The nature and correlates of emerging internalizing symptoms in young children are largely unknown. Maternal factors such as psychological symptoms and detached parenting style have been found to be present in children with anxiety and depression. Further, child attentional control in task completion has been associated with difficulty related to internalizing problems. This study tested hypotheses that child anxiety and depression at age five could be predicted by a combination of maternal distress and maternal detached behavior recorded at age three. An additional hypothesis was tested to determine if child attentional control at age four may be a partial mediator …

Contributors

Skelley, Shayna L., Crnic, Keith A, Eisenberg, Nancy, et al.

Created Date

2010

ABSTRACT Forgiveness is a response to moral wrongdoing motivated by moral reasons. Long thought to be the overcoming of resentment, I will present T.M. Scanlon's view that it is best understood as the decision to blame no longer, i.e. to give up the judgment that one's relationship with another is impaired. Forgiveness has been traditionally thought of as having its locus in the forgiver. However, this has led to a number of accounts in which forgiveness has been presented as a one-sided undertaking, compromising the interpersonal character of the act. I propose a different way of viewing forgiveness, namely as …

Contributors

D'Angelo, Cindy, De Marneffe, Peter L., Murphy, Jeffrie G., et al.

Created Date

2010

Biology textbooks are everybody's business. In accepting the view that texts are created with specific social goals in mind, I examined 127 twentieth-century high school biology textbooks for representations of animal development. Paragraphs and visual representations were coded and placed in one of four scientific literacy categories: descriptive, investigative, nature of science, and human embryos, technology, and society (HETS). I then interpreted how embryos and fetuses have been socially constructed for students. I also examined the use of Haeckel's embryo drawings to support recapitulation and evolutionary theory. Textbooks revealed that publication of Haeckel's drawings was influenced by evolutionists and anti-evolutionists …

Contributors

Wellner, Karen Linette, Maienschein, Jane, Ellison, Karin D., et al.

Created Date

2010

Celiac Disease (CD) is now widespread as one in 133 people are currently diagnosed, while there were only one in 150 in 2006. Much of the research concerning CD is still in the early stages, as formal epidemiological studies are relatively recent. CD is aggravated by the consumption of gluten, which is found mainly in wheat, rye, oats, and barley. Not surprisingly, the rising prevalence of CD has created a significant business opportunity for food manufacturers in developing products that are tailored to CD sufferers. While the entire Gluten-Free (GF) industry has been experiencing double digit growth rates, the expansion …

Contributors

Sampson, Jed, Richards, Timothy, Manfredo, Mark, et al.

Created Date

2010

ABSTRACT This thesis attempts to answer two questions based upon the historical observation that 1^2 +2^2 +· · ·+24^2 = 70^2. The first question considers changing the starting number of the left hand side of the equation from 1 to any perfect square in the range 1 to 10000. On this question, I attempt to determine which perfect square to end the left hand side of the equation with so that the right hand side of the equation is a perfect square. Mathematically, Question #1 can be written as follows: Given a positive integer r with 1 less than or …

Contributors

Roth, Sanford Gary, Bremner, Andrew, Childress, Nancy E, et al.

Created Date

2010

The Culminating Graduate Works of David Dudo. Dissertation/Thesis

Contributors

Dudo, David, Sterling, Pamela, Mcmahon, Jeffery, et al.

Created Date

2010

The Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) General Abilities Index (GAI) and Cognitive Proficiency Index (CPI) have been advanced as possible diagnostic markers of Attention-Deficit Hyperactivity Disorder (ADHD). Diagnostic utility statistics were used to test the ability of GAI-CPI difference scores to identify children with ADHD. Participants included an ADHD sample (n = 78), a referred but non-diagnosed hospital sample (n = 66), and a simulated sample with virtually identical psychometric characteristics as the WISC-IV 2,200 child standardization sample. Receiver Operating Characteristic (ROC) analyses were computed to determine the utility of GAI-CPI difference scores to identify children with ADHD. …

Contributors

Devena, Sarah Elaine, Watkins, Marley W, Wodrich, David L, et al.

Created Date

2010

Thermal modeling and investigation into heat extraction methods for building-applied photovoltaic (BAPV) systems have become important for the industry in order to predict energy production and lower the cost per kilowatt-hour (kWh) of generating electricity from these types of systems. High operating temperatures have a direct impact on the performance of BAPV systems and can reduce power output by as much as 10 to 20%. The traditional method of minimizing the operating temperature of BAPV modules has been to include a suitable air gap for ventilation between the rooftop and the modules. There has been research done at Arizona State …

Contributors

Hrica, Jonathan, Tamizhmani, Govindasamy, Rogers, Bradley, et al.

Created Date

2010

This thesis documents the design history of the Riordan Mansion, and Arts and Crafts style duplex built in Flagstaff, Arizona in 1904 by brothers Michael and Timothy Riordan. The study investigates factors that influenced the design including the Riordan family; the location in Flagstaff, Arizona; the architect, Charles Whittlesey; the Arts and Crafts Movement, and other cultural influences such as religion, naturalism, exoticism, art, and literature. Exterior facade and interior plan, construction materials, technological advances, and furnishings all demonstrate Arts and Crafts characteristics and key principles of the design reform movement. Design reform began in the 1860s with a rejection …

Contributors

Klensin, Katherine Lee, Brandt, Beverly, Fahlman, Betsy, et al.

Created Date

2010

In rural and urban areas of Nigeria, dependence on groundwater is increasing since the population is growing and high quality, treated municipal water is scarce. Municipal drinking water is often compromised because of old and leaking distribution pipes. About 58% of the water consumed in Lagos State, Nigeria, comes from residential wells. However, a majority of residential wells are shallow wells that are constructed relatively close to septic tanks or pit latrines and are therefore subject to contamination. In certain parts of Africa, there is high potential of severe epidemic if water quality is not improved. With increasing reliance on …

Contributors

Talabi, Omogbemiga Adepitan, Edwards, David, Hild, Nicholas, et al.

Created Date

2010

Horizontal Directional Drilling (HDD) is a growing and expanding trenchless method utilized to install pipelines from 2 to 60 inch diameters for lengths over 10,000 foot. To date, there are not many public documents where direct costs and bid prices incurred by HDD installations are available and analyzed. The objective is to provide a better understanding of the factors affecting the bid prices of these projects. The first section of the thesis analyzes how project parameters such as product diameter, bore length and soil conditions affect the bid price of water and wastewater pipeline installations using HDD. Through multiple linear …

Contributors

Vilfrant, Emmania Claudyne, Ariaratnam, Samuel T, Lueke, Jason S, et al.

Created Date

2010

Micromachining has seen application growth in a variety of industries requiring a miniaturization of the machining process. Machining at the micro level generates different cutter/workpiece interactions, generating more localized temperature spikes in the part/sample, as suggested by multiple studies. Temper-etch inspection is a non-destructive test used to identify `grind burns' or localized over-heating in steel components. This research investigated the application of temper-etch inspection to micromachined steel. The tests were performed on AISI 4340 steel samples. Finding, indications of localized over-heating was the primary focus of the experiment. In addition, change in condition between the original and post-machining hardness in …

Contributors

Sayler, William Albert, Biekert, Russ, Danielson, Scott, et al.

Created Date

2010

For this thesis a Monte Carlo simulation was conducted to investigate the robustness of three latent interaction modeling approaches (constrained product indicator, generalized appended product indicator (GAPI), and latent moderated structural equations (LMS)) under high degrees of nonnormality of the exogenous indicators, which have not been investigated in previous literature. Results showed that the constrained product indicator and LMS approaches yielded biased estimates of the interaction effect when the exogenous indicators were highly nonnormal. When the violation of nonnormality was not severe (symmetric with excess kurtosis < 1), the LMS approach with ML estimation yielded the most precise latent interaction …

Contributors

Cham, Hei Ning, West, Stephen G, Aiken, Leona S, et al.

Created Date

2010

The Jon Finn Group, a four-piece instrumental rock band based in Boston, MA, was in need of a website redesign, http://JonFinn.com. They required a website to showcase and sell their music and merchandise, promote upcoming performances, interact directly with their fans, integrate with social networking websites, and administer paid membership subscriptions via a content management system. Making this possible required an overhaul of the website, which was based almost entirely on static HTML files with limited capabilities for dynamic content updates. The band also requested a complete visual design overhaul compatible with traditional desktop computer web browsers, cell phone-based web …

Contributors

Garone, Anthony, Schildgen, Thomas, Lestar, Dorothy, et al.

Created Date

2010

This project is a critical look at Chicano artist Vincent Valdez's 2002-2004 series Stations. The theoretical framework for this work is the concept of cultural citizenship, which refers to a variety of ways in which marginalized groups of people create, fight for, and retain space, identity, and rights within American society through acts of daily life. This research considers how the ten large-scale charcoal drawings that comprise Stations contribute to the construction and representation of distinct and unique Latino spaces and identities. Valdez establishes space in the sense of belonging and community engagement that his work allows. Within this context, …

Contributors

Stemm Patel, Shannon Leigh, Malagamba-Ansótegui, Amelia, Mesch, Claudia, et al.

Created Date

2010

Cloud computing systems fundamentally provide access to large pools of data and computational resources through a variety of interfaces similar in spirit to existing grid and HPC resource management and programming systems. These types of systems offer a new programming target for scalable application developers and have gained popularity over the past few years. However, most cloud computing systems in operation today are proprietary and rely upon infrastructure that is invisible to the research community, or are not explicitly designed to be instrumented and modified by systems researchers. In this research, Xen Server Management API is employed to build a …

Contributors

Kadne, Aniruddha Kishor, Huang, Dijiang, Tsai, Wei-Tek, et al.

Created Date

2010

ABSTRACT Ongoing research into wireless transceivers in the 60 GHz band is required to address the demand for high data rate communications systems at a frequency where signal propagation is challenging even over short ranges. This thesis proposes a mixer architecture in Complementary Metal Oxide Semiconductor (CMOS) technology that uses a voltage controlled oscillator (VCO) operating at a fractional multiple of the desired output signal. The proposed topology is different from conventional subharmonic mixing in that the oscillator phase generation circuitry usually required for such a circuit is unnecessary. Analysis and simulations are performed on the proposed mixer circuit in …

Contributors

Martino, Todd Jeffrey, Kiaei, Sayfe, Bakkaloglu, Bertan, et al.

Created Date

2010

This thesis presents a multi-modal motion tracking system for stroke patient rehabilitation. This system deploys two sensor modules: marker-based motion capture system and inertial measurement unit (IMU). The integrated system provides real-time measurement of the right arm and trunk movement, even in the presence of marker occlusion. The information from the two sensors is fused through quaternion-based recursive filters to promise robust detection of torso compensation (undesired body motion). Since this algorithm allows flexible sensor configurations, it presents a framework for fusing the IMU data and vision data that can adapt to various sensor selection scenarios. The proposed system consequently …

Contributors

Liu, Yangzi, Qian, Gang, Olson, Loren, et al.

Created Date

2010

Natural Language Processing is a subject that combines computer science and linguistics, aiming to provide computers with the ability to understand natural language and to develop a more intuitive human-computer interaction. The research community has developed ways to translate natural language to mathematical formalisms. It has not yet been shown, however, how to automatically translate different kinds of knowledge in English to distinct formal languages. Most of the recent work presents the problem that the translation method aims to a specific formal language or is hard to generalize. In this research, I take a first step to overcome this difficulty …

Contributors

Alvarez Gonzalez, Marcos, Baral, Chitta, Lee, Joohyung, et al.

Created Date

2010

This thesis looks at the 1842 Supreme Court ruling of Prigg v. Pennsylvania, the events leading up to this case, and the subsequent legislative fallout from the decision. The Supreme Court rendered this ruling in an effort to clear up confusion regarding the conflict between state and federal law with regard to fugitive slave recovery. Instead, the ambiguities contained within the ruling further complicated the issue of fugitive slave recovery. This complication commenced when certain state legislatures exploited an inadvertent loophole contained in the ruling. Thus, instead of mollifying sectional tension by generating a clear and concise process of fugitive …

Contributors

Coughlin, John Kevin, Schermerhorn, Calvin, O'Donnell, Catherine, et al.

Created Date

2010

Spatial uncertainty refers to unknown error and vagueness in geographic data. It is relevant to land change and urban growth modelers, soil and biome scientists, geological surveyors and others, who must assess thematic maps for similarity, or categorical agreement. In this paper I build upon prior map comparison research, testing the effectiveness of similarity measures on misregistered data. Though several methods compare uncertain thematic maps, few methods have been tested on misregistration. My objective is to test five map comparison methods for sensitivity to misregistration, including sub-pixel errors in both position and rotation. Methods included four fuzzy categorical models: fuzzy …

Contributors

Brown, Scott Benjamin, Wentz, Elizabeth A., Myint, Soe W., et al.

Created Date

2010

ABSTRACT Diné Education is equal and is as valid as this nation's mainstream education, yet it does not share the same ideas, processes or goals as its counterpart. It is more complicated because it is based on oral traditions and the philosophies of Hózhó, a construct that requires a learner to embrace one's surroundings, actions, interactions, and being. A central part of Diné education focuses on spirituality and self awareness which are intertwined with every dimension of this universe. In order to become educated in the Diné world a learner must first learn to "walk in beauty" and have a …

Contributors

Neezzhoni, Dmitriy Zoxjkie, Romero-Little, Mary Eunice, Brayboy, Bryan, et al.

Created Date

2010

A study was conducted to assess the effects of generational status on various measures of stigmatization, acculturative stress, and perceived social and interpersonal threat within the Mexican heritage population in the Southwest. The role of the fear of stigma by association, regardless of actual experiences of stigmatization, was investigated, including its relationships with acculturative stress, perceived threat, and social distancing. Exploratory analyses indicated that first generation Mexican Americans differed significantly from second generation Mexican Americans on the perception of Mexican nationals as ingroup members, the fear of stigma by association by Americans, and levels of acculturative stress. Additional analyses indicated …

Contributors

Boyd, Brenna Margaret, Knight, George P, Kwan, Sau, et al.

Created Date

2010

Power rating photovoltaic modules at six irradiance and four temperature matrix levels of IEC 61853-1 draft standard is one of the most important requirements to accurately predict energy production of photovoltaic modules at different climatic conditions. Two studies were carried out in this investigation: a measurement repeatability study and a translation procedure validation study. The repeatability study was carried out to define a testing methodology that allows generating repeatable power rating results under outdoor conditions. The validation study was carried out to validate the accuracy of the four translation procedures: the first three procedures are from the IEC 60891 standard …

Contributors

Paghasian, Karen Yuag, Tamizhmani, Govindasamy, Madakannan, Arunachalandar, et al.

Created Date

2010

The Maricopa produce one of the most recognizable types of pottery made in Arizona. Since the late nineteenth century, the ware has been manufactured for sale, and a small number of individuals continue to produce the pottery today. Over the past forty years, the amount of pottery in museum and private collections has increased dramatically. Studying these new collections changes the way in which developments in the pottery are understood. Previous scholarship identified three phases of development, including a pottery revival in the late 1930s during which the involvement of government and museum personnel resulted in the improvement of the …

Contributors

Vogel, Lindsey Lianne, Warren-Findley, Jannelle, Dallett, Nancy, et al.

Created Date

2010

In this thesis two methodologies have been proposed for evaluating the fault response of analog/RF circuits. These proposed approaches are used to evaluate the response of the faulty circuit in terms of specifications/measurements. Faulty response can be used to evaluate important test metrics like fail probability, fault coverage and yield coverage of given measurements under process variations. Once the models for faulty and fault free circuit are generated, one needs to perform Monte Carlo sampling (as opposed to Monte Carlo simulations) to compute these statistical parameters with high accuracy. The first method is based on adaptively determining the order of …

Contributors

Subrahmaniyan Radhakrishnan, Gurusubrahmaniyan, Ozev, Sule, Blain Christen, Jennifer, et al.

Created Date

2010

Modern gas turbines operate at high mainstream gas temperatures and pressures, which requires high durability materials. A method of preventing these hot gases from leaking into the turbine cavities is essential for improved reliability and cost reduction. Utilizing bleed-off air from the compressor to cool internal components has been a common solution, but at the cost of decreasing turbine performance. The present work thoroughly describes the complex flow field between the mainstream gas and a single rotor-stator disk cavity, and mechanisms of mainstream gas ingestion. A combined approach of experimental measurement and numerical simulation are performed on the flow in …

Contributors

Dunn, Dennis Martin, Squires, Kyle D, Roy, Ramendra P, et al.

Created Date

2010

Implantable medical device technology is commonly used by doctors for disease management, aiding to improve patient quality of life. However, it is possible for these devices to be exposed to ionizing radiation during various medical therapeutic and diagnostic activities while implanted. This commands that these devices remain fully operational during, and long after, radiation exposure. Many implantable medical devices employ standard commercial complementary metal-oxide-semiconductor (CMOS) processes for integrated circuit (IC) development, which have been shown to degrade with radiation exposure. This necessitates that device manufacturers study the effects of ionizing radiation on their products, and work to mitigate those effects …

Contributors

Schlenvogt, Garrett James, Barnaby, Hugh J, Goodnick, Stephen, et al.

Created Date

2010

The gender gap of women in science is an important and unresolved issue in higher education and occupational opportunities. The present study was motivated by the fact that there are typically fewer females than males advancing in science, and therefore fewer female science instructor role models. This observation inspired the questions: Are female college students influenced in a positive way by female science teaching assistants (TAs), and if so how can their influence be measured? The study tested the hypothesis that female TAs act as role models for female students and thereby encourage interest and increase overall performance. To test …

Contributors

Ebert, Darilyn, Lawson, Anton, Maienschein, Jane, et al.

Created Date

2010

Market acceptability of distributed energy resource (DER) technologies and the gradual and consistent increase in their depth of penetration have generated significant interest over the past few years. In particular, in Arizona and several other states there has been a substantial in-crease in distributed photovoltaic (PV) generation interfaced to the power distribution systems, and is expected to continue to grow at a significant rate. This has made integration, control and optimal operation of DER units a main area of focus in the design and operation of distribution systems. Grid-connected, distributed PV covers a wide range of power levels ranging from …

Contributors

Narayanan, Anand, Ayyanar, Raja, Vittal, Vijay, et al.

Created Date

2010

The RADiation sensitive Field Effect Transistor (RADFET) has been conventionally used to measure radiation dose levels. These dose sensors are calibrated in such a way that a shift in threshold voltage, due to a build-up of oxide-trapped charge, can be used to estimate the radiation dose. In order to estimate the radiation dose level using RADFET, a wired readout circuit is necessary. Using the same principle of oxide-trapped charge build-up, but by monitoring the change in capacitance instead of threshold voltage, a wireless dose sensor can be developed. This RADiation sensitive CAPacitor (RADCAP) mounted on a resonant patch antenna can …

Contributors

Srinivasan Gopalan, Madusudanan, Barnaby, Hugh, Holbert, Keith, et al.

Created Date

2010

Photovoltaic (PV) modules appear to have three classifications of failure: Infant mortality, normal-life failure, and end-of-life failure. Little is known of the end-of-life failures experienced by PV modules due to their inherent longevity. Accelerated Life Testing (ALT) has been at the crux of this lifespan prediction; however, without naturally failing modules an accurate acceleration factor cannot be determined for use in ALT. By observing modules that have been aged in the field, a comparison can be made with modules undergoing accelerated testing. In this study an investigation on about 1900 aged (10-17 years) grid-tied PV modules installed in the desert …

Contributors

Suleske, Adam Alfred, Tamizhmani, Govindasamy, Rogers, Bradley, et al.

Created Date

2010

Cuisines are becoming increasingly significant in a tourist's experience and as such looking into different cuisines and their effects on the tourist's destination provides strong indicators of the outlook for the destination. Metropolitan areas within the United States have a history of being known for specific food items as well as types of cuisines. This study explores the Metropolitan area of New Orleans and the cuisine specific to this region: the Creole cuisine. A mixed methods approach was used to identify the Creole cuisine within the New Orleans area as both a regional cuisine and as a culturally significant cuisine, …

Contributors

Seery, Paul, Tyrrell, Timothy, Timothy, Dallen, et al.

Created Date

2010

Silicon Carbide (SiC) junction field effect transistors (JFETs) are ideal for switching high current, high voltage loads in high temperature environments. These devices require external drive circuits to generate pulse width modulated (PWM) signals switching from 0V to approximately 10V. Advanced CMOS microcontrollers are ideal for generating the PWM signals but are limited in output voltage due to their low breakdown voltage within the CMOS drive circuits. As a result, an intermediate buffer stage is required between the CMOS circuitry and the JFET. In this thesis, a discrete silicon-on-insulator (SOI) metal semiconductor field effect transistor (MESFET) was used to drive …

Contributors

Summers, Nicholas Burton, Thornton, Trevor J, Goryll, Michael, et al.

Created Date

2010

Sparked by the Virginia Tech Shooting of 2007 and the resultant changes to the Family Educational Rights and Privacy Act, a review was conducted of FERPA's impact on university policies regarding student privacy and safety. A single, private university's policies were reviewed and a survey was distributed to 500 campus employees who had recently completed the university's FERPA training to determine if the university's current training was effective in training employees to understand FERPA's health and safety exceptions clause. The results showed that while the university's training was effective in training employees how to safeguard students' academic records, employees did …

Contributors

Gilbert, Byron J., Edwards, David A., Hild, Nicholas R., et al.

Created Date

2010

In preschool, learning often occurs within the context of children&rsquo;s play activities with various toys and materials. Although much theoretical speculation has occurred, relatively little empirical research has examined how preschoolers&rsquo; play activities foster children&rsquo;s learning and academic skill development. The current study extended previous research on dimensions of adolescent activity involvement to young children in preschool by assessing dimensions of activity involvement across and within curriculum-based and gender-based activity domains. In a longitudinal design, I explored the relation between these dimensions of activity involvement in the fall semester of children&rsquo;s preschool year and children&rsquo;s academic outcomes at the end …

Contributors

Goble, Priscilla Maria, Hanish, Laura D., Martin, Carol Lynn, et al.

Created Date

2010

ABSTRACT Moving beyond Form: Communicating Identity through Dance chronicles the journey of investigating my personal creative process in dance. This was a search for strategies to empower myself creatively, enabling me to move beyond the limitations of a prescribed form or style of dance and communicate ideas that were relevant to me. But on a deeper level, it was an exploration of my capacity to self-define through movement. The challenge led me to graduate school, international study with world-renowned choreographers and to the development of a holistic creative practice, Movement to Meaning. The aim of this creative practice is to …

Contributors

Davis, Omilade, Vissicaro, Pegge, Dove, Simon, et al.

Created Date

2010

The U.S. Navy is interested in evaluating the dielectric performance of SF6 at 30 kHz in order to develop optimal bushing designs and to ensure reliable operation for the Very Low Frequency/ Low Frequency (VLF/LF) transmitting stations. The breakdown experiments of compressed SF6 at 30 kHz in the pressure range of 1-5 atm were conducted in both the uniform field (plane-plane gap) and the non-uniform field (rod-plane gap). To understand the impact of pressure on the breakdown voltage of SF6 at VLF/LF, empirical models of the dielectric strength of SF6 were derived based on the experimental data and regression analysis. …

Contributors

Han, Jian, Gorur, Ravi S, Farmer, Richard G, et al.

Created Date

2010

This study analyzes the thermoelectric phenomena of nanoparticle suspensions, which are composed of liquid and solid nanoparticles that show a relatively stable Seebeck coefficient as bulk solids near room temperature. The approach is to explore the thermoelectric character of the nanoparticle suspensions, predict the outcome of the experiment and compare the experimental data with anticipated results. In the experiment, the nanoparticle suspension is contained in a 15cm*2.5cm*2.5cm glass container, the temperature gradient ranges from 20 °C to 60 °C, and room temperature fluctuates from 20 °C to 23°C. The measured nanoparticles include multiwall carbon nanotubes, aluminum dioxide and bismuth telluride. …

Contributors

Zhu, Moxuan, Phelan, Patrick, Trimble, Steven, et al.

Created Date

2010

Text search is a very useful way of retrieving document information from a particular website. The public generally use internet search engines over the local enterprise search engines, because the enterprise content is not cross linked and does not follow a page rank algorithm. On the other hand the enterprise search engine uses metadata information, which allows the user to specify the conditions that any retrieved document should meet. Therefore, using metadata information for searching will also be very useful. My thesis aims on developing an enterprise search engine using metadata information by providing advanced features like faceted navigation. The …

Contributors

Sanaka, Srinivasa Raviteja, Davulcu, Hasan, Sen, Arunabha, et al.

Created Date

2010

Building applied photovoltaics (BAPV) is a major application sector for photovoltaics (PV). Due to the negative temperature coefficient of power output, the performance of a PV module decreases as the temperature of the module increases. In hot climatic conditions, such as the summer in Arizona, the operating temperature of a BAPV module can reach as high as 90°C. Considering a typical 0.5%/°C power drop for crystalline silicon (c-Si) modules, a performance decrease of approximately 30% would be expected during peak summer temperatures due to the difference between rated temperature (25°C) and operating temperature (~90°C) of the modules. Also, in a …

Contributors

Oh, Jaewon, Tamizhmani, Govindasamy, Rogers, Bradley R, et al.

Created Date

2010

Life satisfaction in people with physical disabilities is on average lower than people without disabilities. This reduction in life satisfaction may be due to a reduction in domain control. This study examines how domain control predicts life satisfaction when added to a model of other salient life satisfaction predictors. Using email survey methodology, five separate scales where used on two separate populations; people with (n= 44) and without (n= 43) a physical disability to determine each groups life satisfaction. It was found that when domain control is added to the bottom-up theory of life satisfaction, the independent direct relationships of …

Contributors

Casto, Jr, Joseph Raymond, Rodriuez, Ariel, Grossman, Gary, et al.

Created Date

2010

Adolescents and their parents have a unique opportunity to learn from one another and encourage mutual pursuit of a healthy lifestyle. Discussing beneficial habits and how to ensure wellness are uncommon topics for student consideration in the classroom and seldom included in education programs developed to assist parents. The purpose of this project is to identify important health concerns for decision making by adolescents. Each topic is presented in a manner that enables students to explore their personal risk factors, gain knowledge through individual surveys, set personal goals, promote conversation with parents and peers, and provide online resources that foster …

Contributors

Rooks, Lindsey, Strom, Robert, Strom, Paris, et al.

Created Date

2010

Phase Change Material (PCM) plays an important role as a thermal energy storage device by utilizing its high storage density and latent heat property. One of the potential applications for PCM is in buildings by incorporating them in the envelope for energy conservation. During the summer season, the benefits are a decrease in overall energy consumption by the air conditioning unit and a time shift in peak load during the day. Experimental work was carried out by Arizona Public Service (APS) in collaboration with Phase Change Energy Solutions (PCES) Inc. with a new class of organic-based PCM. This "BioPCM" has …

Contributors

Muruganantham, Karthik, Phelan, Patrick, Reddy, Agami, et al.

Created Date

2010

There is a growing interest in the creation of three-dimensional (3D) images and videos due to the growing demand for 3D visual media in commercial markets. A possible solution to produce 3D media files is to convert existing 2D images and videos to 3D. The 2D to 3D conversion methods that estimate the depth map from 2D scenes for 3D reconstruction present an efficient approach to save on the cost of the coding, transmission and storage of 3D visual media in practical applications. Various 2D to 3D conversion methods based on depth maps have been developed using existing image and …

Contributors

Li, Jinjin, Karam, Lina J, Chakrabarti, Chaitali, et al.

Created Date

2010

A major concern in the operation of present-day gas turbine engines is the ingestion of hot mainstream gas into rotor-stator disk cavities of the high-pressure turbine stages. Although the engines require high gas temperature at turbine entry for good performance efficiency, the ingested gas shortens the lives of the cavity internals, particularly that of the rotor disks. Steps such as installing seals at the disk rims and injecting purge (secondary) air bled from the compressor discharge into the cavities are implemented to reduce the gas ingestion. Although there are advantages to the above-mentioned steps, the performance of a gas turbine …

Contributors

Junnarkar, Nihal, Roy, Ramendra P, Mignolet, Marc, et al.

Created Date

2010

Given the growing market in solar energy, specifically by the thin-film technologies, it is imperative that adequate and accurate standards be developed for these newer photovoltaic devices. Cadmium Telluride, CdTe, one of the major players in the thin-film PV industry is currently rated and certified using standards that have been developed under the context of older technologies. The behavior of CdTe has been shown to be unique enough to suggesting that standards be revised. In this research, methods built on previous industry and independent studies are used to identify these unique behaviors. As well new methods are developed to further …

Contributors

Petersen, Chad, Tamizhmani, Govindasamy, Macia, Narciso, et al.

Created Date

2010

Disability is a label accompanied by a multitude of misconceptions and stereotypes. During various periods in Germany, attitudes towards disability have ranged from disgust and fear, to acceptance and inclusion. Being disabled in Germany once meant certain isolation; at the hands of the Nazi regime, it was met with almost certain premature death. Since those darker days of Germany's history, the country has become one that now affords its disabled citizens with the same rights as the non-disabled population and seeks to create a barrier-free environment. This study examines these perceptions of disability in Germany from the 1920s through the …

Contributors

Jackson, Anthony, Gilfillan, Daniel, Alexander, John, et al.

Created Date

2010

Passive flow control achieved by surface dimpling can be an effective strategy for reducing drag around bluff bodies - an example of substantial popular interest being the flow around a golf ball. While the general effect of dimples causing a delay of boundary layer separation is well known, the mechanisms contributing to this phenomena are subtle and not thoroughly understood. Numerical models offer a powerful approach for studying drag reduction, however simulation strategies are challenged by complex geometries, and in applications the introduction of ad hoc turbulence models which introduce additional uncertainty. These and other factors provide much of the …

Contributors

Mode, Jeffrey Michael, Squires, Kyle, Herrmann, Marcus, et al.

Created Date

2010

As an industrial society, humans have increasingly separated agricultural processes from natural ecosystems. Many areas of the Southwestern US, however, maintain traditional practices that link agricultural systems to the natural environment. One such practice, diverting river water into fields via earthen irrigation canals, allows ditch water to recharge groundwater and riparian vegetation to prosper along canal banks. As there is growing interest in managing landscapes for multiple ecosystem services, this study was undertaken to determine if irrigation canals function as an extension of the riparian corridor. I was specifically interested in determining if the processes within semi-arid streams that drive …

Contributors

Betsch, Jacqueline Michelle, Stromberg, Juliet C, Hall, Sharon J, et al.

Created Date

2010

Efficient performance of gas turbines depends, among several parameters, on the mainstream gas entry temperature. At the same time, transport of this high temperature gas into the rotor-stator cavities of turbine stages affects the durability of rotor disks. This transport is usually countered by installing seals on the rotor and stator disk rims and by pressurizing the cavities by injecting air (purge gas) bled from the compressor discharge. The configuration of the rim seals influences the magnitude of main gas ingestion as well as the interaction of the purge gas with the main gas. The latter has aerodynamic and hub …

Contributors

Balasubramanian, Jagdish Harihara, Roy, Ramendra P, Lee, Taewoo, et al.

Created Date

2010

Environmental change and natural hazards represent a challenge for sustainable development. By disrupting livelihoods and causing billions of dollars in damages, disasters can undo many decades of development. Development, on the other hand, can actually increase vulnerability to disasters by depleting environmental resources and marginalizing the poorest. Big disasters and big cities get the most attention from the media and academia. The vulnerabilities and capabilities of small cities have not been explored adequately in academic research, and while some cities in developed countries have begun to initiate mitigation and adaptation responses to environmental change, most cities in developing countries have …

Contributors

Marquez Reyes, Bernardo Jose, Eakin, Hallie, Lara-Valencia, Francisco, et al.

Created Date

2010

Through interviews and observations, this thesis provides an overview of refugee resettlement and explores the way one community is providing English language instruction to recently resettled refugees. It also describes the research process of this thesis so other researchers will be aware of the challenges such research contexts provide. In the southwestern state studied here, one of the refugee resettlement agencies holds the contract to provide English Language instruction to refugees. Other agencies provide supplemental English instruction and tutoring. The U.S. federal statute Immigration and Nationality Act, title 45 of the Code of Federal Regulations part 400--Refugee Resettlement Program, and …

Contributors

Kielczewski, Sarah-Anne Laster, Adams, Karen L, Van Gelderen, Elly, et al.

Created Date

2010

Ethernet switching is provided to interconnect multiple Ethernets for the exchange of Ethernet data frames. Most Ethernet switches require data buffering and Ethernet signal regeneration at the switch which incur the problems of substantial signal processing, power consumption, and transmission delay. To solve these problems, a cross bar architecture switching system for 10GBASE-T Ethernet is proposed in this thesis. The switching system is considered as the first step of implementing a multi-stage interconnection network to achieve Terabit or Petabit switching. By routing customized headers in capsulated Ethernet frames in an out-of-band control method, the proposed switching system would transmit the …

Contributors

Luo, Haojun, Hui, Joseph, Zhang, Junshan, et al.

Created Date

2010

This study investigated the effect of two different preparation methods on hitting performance in a high&ndashfidelity; baseball batting simulation. Novice and expert players participated in one of three conditions: observation (viewing a video of the goal action), visualization (hearing a script of the goal action), or a no&ndashpreparation; control group. Each participant completed three different hitting tasks: pull hit, opposite&ndashfield; hit, and sacrifice fly. Experts had more successful hits, overall, than novices. The number of successful hits was significantly higher for both the observation and visualization conditions than for the control. In most cases, performance was best in the observation …

Contributors

Neuman, Brooke Leigh Anne, Gray, Rob, Branaghan, Russell, et al.

Created Date

2010

ABSTRACT This thesis analyzes the discourse surrounding proposed solutions to the immigration phenomenon in the United States. I conducted two qualitative media analyses on the rhetoric and conceptual frames found in mass media newscasts reporting on the immigration debate. The first analysis covered the general immigration debate and the second covered the appearance of American southwest ranchers. Specifically the analyses contrasted the media's coverage of root economic causes to the immigration phenomenon in comparison to reactionary solutions as proposed by leading immigrant attrition organizations such as the immigration think tank, Federation for American Immigration Reform (FAIR) and Republican linguist, Frank …

Contributors

De La Fuente, Nicolas Antonio, Tellez, Michelle, Stancliff, Michael, et al.

Created Date

2010

Amine-modified solid sorbents and membrane separation are promising technologies for separation and capture of carbon dioxide (CO2) from combustion flue gas. Amine absorption processes are mature, but still have room for improvement. This work focused on the synthesis of amine-modified aerogels and metal-organic framework-5 (MOF-5) membranes for CO2 separation. A series of solid sorbents were synthesized by functionalizing amines on the surface of silica aerogels. This was done by three coating methods: physical adsorption, magnetically assisted impact coating (MAIC) and atomic layer deposition (ALD). CO2 adsorption capacity of the sorbents was measured at room temperature in a Cahn microbalance. The …

Contributors

Rosa, Teresa M., Lin, Jerry, Pfeffer, Robert, et al.

Created Date

2010

Previous research has suggested that the social interactions parents engage in with their typically developing children are critical to the relationships children form with peers later in development. Fewer studies, however, have investigated the relation between parent and child interactions and peer relations in children with autism. The current study aimed to investigate the relation between parent-child joint attention skills, social competence and friendship quality in children with autism and in typically developing children. A matched sample of 20 preschool-aged children with autism and 20 preschool-aged typically developing children were observed interacting with their parents in a laboratory setting. Approximately …

Contributors

Meek, Shantel Elizabeth, Jahromi, Laudan, Valiente, Carlos, et al.

Created Date

2010

In recent years, the world has debated the idea of biofuels as a solution to energy security, energy independence, and global climate change. However, as the biofuels movement has unfolded, crucial issues emerged regarding biofuels efficacy and efficiency. The deployment of biofuels of marginal benefit has raised questions about how countries like the USA may have found themselves so invested in a potentially failing technology. In order to better understand and evaluate these issues, this study utilizes the Ostrom Institutional Analysis and Development (IAD) framework to better evaluate these issues and analyze interacting institutions that shape US biofuel policy. The …

Contributors

Dirks, Lisa Carrol, Wu, Jingle, Anderies, John Marty, et al.

Created Date

2010

Phytoplankton comprise the base of the marine food web, and, along with heterotrophic protists, they are key players in the biological pump that transports carbon from the surface to the deep ocean. In the world's subtropical oligotrophic gyres, plankton communities exhibit strong seasonality. Winter storms vent deep water into the euphotic zone, triggering a surge in primary productivity in the form of a spring phytoplankton bloom. Although the hydrographic trends of this "boom and bust" cycle have been well studied for decades, community composition and its seasonal and annual variability remains an integral subject of research. It is hypothesized here …

Contributors

Hansen, Amy, Neuer, Susanne, Krajmalnik-Brown, Rosa, et al.

Created Date

2010

Cyber Physical Systems (CPSs) are systems comprising of computational systems that interact with the physical world to perform sensing, communication, computation and actuation. Common examples of these systems include Body Area Networks (BANs), Autonomous Vehicles (AVs), Power Distribution Systems etc. The close coupling between cyber and physical worlds in a CPS manifests in two types of interactions between computing systems and the physical world: intentional and unintentional. Unintentional interactions result from the physical characteristics of the computing systems and often cause harm to the physical world, if the computing nodes are close to each other, these interactions may overlap thereby …

Contributors

Kandula, Sailesh Umamaheswara, Gupta, Sandeep, Lee, Yann Hang, et al.

Created Date

2010

Cystic Fibrosis, one of the most severe childhood life-shortening illnesses, places demands on a child's life conceivably interfering with his or her academic success. It is possible that the medically related activities in which individuals with CF partake interfere with academic activities and the motivation, specifically beliefs, expectancies, and values held, toward those activities. These issues encouraged the investigation of academic achievement and achievement motivation in children with CF through exploration of three research questions. Question one concerns differences in academic achievement between children with CF and a healthy comparison group for 1) reading and 2) math. Question two explored …

Contributors

Hall, Morgan M., Gorin, Joanna, Wodrich, David, et al.

Created Date

2010

Front End Planning (FEP) is a critical process for uncovering project unknowns, while developing adequate scope definition following a structured approach for the project execution process. FEP for infrastructure projects assists in identifying and mitigating issues such as right-of-way concerns, utility adjustments, environmental hazards, logistic problems, and permitting requirements. This thesis describes a novel and effective risk management tool that has been developed by the Construction Industry Institute (CII) called the Project Definition Rating Index (PDRI) for infrastructure projects. Input from industry professionals from over 30 companies was used in the tool development which is specifically focused on FEP. Data …

Contributors

Bingham, Evan Dale, Gibson Jr., G. Edward, Badger, William, et al.

Created Date

2010

With increasing interest in sustainability and green building, organizations are implementing programs such as Leadership in Energy and Environmental Design for Existing Buildings: Operations and Maintenance (LEED-EB) in order to focus corporate sustainability goals on the operations of a facility and the practices of the building occupants. Green building programs help reduce the impact of a facility and bring about several environmental benefits including but not limited to energy conservation, water conservation and material conservation. In addition to various environmental benefits, green building programs can help companies become more efficient. The problem is that organizations are not always successful in …

Contributors

Furphy, Kimberly, Hild, Nicholas, Olson, Larry, et al.

Created Date

2010

Miedema's plot is used to select the Cu/metal barrier for Cu metallization.The Cu/metal barrier system selected should have positive heat of formation (Hf) so that there is no intermixing between the two layers. In this case, Ru is chosen as a potential candidate, and then the barrier properties of sputtered Cu/Ru thin films on thermally grown SiO2 substrates are investigated by Rutherford backscattering spectrometry (RBS), X-ray diffractometry (XRD), and electrical resistivity measurement. The Cu/Ru/SiO2 samples are analyzed prior to and after vacuum annealing at various temperatures of 400, 500, and 600 oC and at different interval of times of 0.5, …

Contributors

Venkatesh, Srilakshmi Hosadurga, Alford, Terry L, Krause, Stephen, et al.

Created Date

2010

This thesis investigates the role of activity visualization tools in increasing group awareness at the workspace. Today, electronic calendaring tools are widely used in the workplace. The primary function is to enable each person maintain a work schedule. They also are used to schedule meetings and share work details when appropriate. However, a key limitation of current tools is that they do not enable people in the workplace to understand the activity of the group as a whole. A tool that increases group awareness would promote reflection; it would enable thoughtful engagement with one's co-workers. I have developed two tools: …

Contributors

Zhang, Lu, Sundaram, Hari, Qian, Gang, et al.

Created Date

2010

Rapid developments are occurring in the arena of activity-based microsimulation models. Advances in computational power, econometric methodologies and data collection have all contributed to the development of microsimulation tools for planning applications. There has also been interest in modeling child daily activity-travel patterns and their influence on those of adults in the household using activity-based microsimulation tools. It is conceivable that most of the children are largely dependent on adults for their activity engagement and travel needs and hence would have considerable influence on the activity-travel schedules of adult members in the household. In this context, a detailed comparison of …

Contributors

Sana, Bhargava Kishore, Pendyala, Ram M, Ahn, Soyoung, et al.

Created Date

2010

Online social networks, including Twitter, have expanded in both scale and diversity of content, which has created significant challenges to the average user. These challenges include finding relevant information on a topic and building social ties with like-minded individuals. The fundamental question addressed by this thesis is if an individual can leverage social network to search for information that is relevant to him or her. We propose to answer this question by developing computational algorithms that analyze a user's social network. The features of the social network we analyze include the network topology and member communications of a specific user's …

Contributors

Xu, Ke, Sundaram, Hari, Ye, Jieping, et al.

Created Date

2010

Individual and group accountability is an important part of productive group work. However, classroom evaluation of teamwork often relies on top-down assessment of group product by the teacher. Other methods include averaging group grades, group discussions, evaluative essays and random selection and application of one member's grade to the entire team. In contrast, the Teamwork Skills Inventory (TSI) developed by Strom and Strom provides assessment of individual conduct and contributions as observed by peers. The instrument also affords students with the opportunity to judge their own performance. Team members are responsible for their own behavior and skill development but are …

Contributors

Brown, Denise Miller, Strom, Robert D., Stamm, Jill, et al.

Created Date

2010

This thesis study describes English Language Learner (ELL) participation practices in a summer English language development (ELD) middle school classroom in a public school district in Arizona. The purpose of the study was to document Mexican immigrant and Mexican American English learners' language experiences in a prescriptive ELD program in relation to the social, historical and cultural context. The study utilizes a sociocultural framework and critical language awareness concepts as well as qualitative interpretive inquiry to answer the following research questions: What is the nature of ELL participation during language lessons? That is, what are the common participation practices in …

Contributors

Martinez, Theresa Ann, Powers, Jeanne M, Arias, Beatriz, et al.

Created Date

2010

This paper contains an examination of the impact of the Vampire Hysteria in Europe during the 1700&rsquo;s on Lord Byron's &ldquo;The Giaour.&rdquo; Byron traveled to the continent in 1809 and wrote the poems that came to be known as his Oriental Romances after overhearing what would become &ldquo;The Giaour &rdquo; in &ldquo; one of the many coffee-houses that abound in the Levant.&rdquo; The main character, the Giaour, has characteristics typical of the Greek vampire, called vrykolakas. The vamping of characters, the cyclic imagery, and the juxtaposition of life and death as it is expressed within the poem are analyzed in …

Contributors

Smith, Rosemary Kristine, Lussier, Mark S., Bivona, Daniel, et al.

Created Date

2010

An early Christian construct which had the recently-deceased soul endures a series of judicial proceedings by demons, the telonia has survived as a folk belief in Orthodox nations such as Russia and Ukraine. The telonia construct is a controversial one in Orthodoxy, however, as discussions of the construct's origins often break down into polemical debate regarding the ontological reality of the telonia. This thesis, as its primary goal, investigates the origins and early development of the telonia in a methodical, scholarly manner. It adduces texts from ancient Egypt to propose that the origins of the telonia extend to the earliest …

Contributors

Mcavoy, Shawn, Newhauser, Richard, Clay, J. Eugene, et al.

Created Date

2010

ABSTRACT The February 2008 study of a Snowflake, Arizona site measured changes in soil organic carbon, total nitrogen, extractable phosphorus, and soil moisture, to determine what affect One-seed Juniper (Juniperus monosperma) trees have on surrounding soil, thus affecting native grass growth. Increasing juniper densities in grasslands also decrease populations of some grassland bird species. Measurements were taken each meter along a twelve meter line transect, moving from juniper trees, through a bare soil area and into a grassland. Non-linear relationships were examined, in regard to distance from the tree and juniper root mass. Relationships were examined to determine any affect …

Contributors

Weller, Christopher, Green, Douglas, Miller, William H, et al.

Created Date

2010

Radiation hardening by design (RHBD) has become a necessary practice when creating circuits to operate within radiated environments. While employing RHBD techniques has tradeoffs between size, speed and power, novel designs help to minimize these penalties. Space radiation is the primary source of radiation errors in circuits and two types of single event effects, single event upsets (SEU), and single event transients (SET) are increasingly becoming a concern. While numerous methods currently exist to nullify SEUs and SETs, special consideration to the techniques of temporal hardening and interlocking are explored in this thesis. Temporal hardening mitigates both SETs and SEUs …

Contributors

Matush, Bradley, Clark, Lawrence T, Allee, David, et al.

Created Date

2010

Educators and therapists must unify and formulate new strategies to address the academic and social needs of a newly emerging at risk demographic, "the forgotten middle." Currently, a paradigm shift within educative music therapy, human development study, and educational psychology, suggests that curriculums need to integrate alternative methods into their framework, change the definition of at-risk, and recognize math aptitude and social competency as predictors of a student's ability to gain upward mobility and self-sufficiency. Musical interaction, although considered a secondary measure within educational forums, is a viable means to address the socio-emotional and academic needs of students. In order …

Contributors

Heiskell, James De Witt, Crowe, Barbara J, Rio, Robin, et al.

Created Date

2010

Although women of color have increased their presence in the workplace, many obstacles restricting career opportunities still exist. It is important that mental health professionals contribute in providing interventions to increase career opportunities for women of color. The purpose of this research is to add to the repertoire of interventions by studying the irrational career beliefs of Black women. This research utilizes the Believe It! program, an online career development program that focuses on altering irrational/maladaptive career beliefs that can prevent young females from pursuing career opportunities. An early study of Believe It! found it to be effective for Caucasian …

Contributors

Webster, Jacqueline Tiann, Horan, John J, Atkinson, Robert, et al.

Created Date

2010

Emerging adulthood--a developmental point in the life span (usually between the ages of 18-25) during which children no longer see themselves as adolescents but would not yet consider themselves adults--is marked by identity exploration and discovering new life directions. When emerging adults find themselves serving as caregivers for their parent during a time when they would normally be establishing autonomy and exploring new directions, they may feel conflicted by their desire to both care for their parent and maintain a sense of independence. Thus, using a multiple-method research design that includes both an autoethnography and a qualitative content analysis of …

Contributors

Piemonte, Nicole Marie, Fisher, Carla, Kelley, Douglas, et al.

Created Date

2010

The purpose of this thesis was to solve a complex problem in the manufacturing industry. The complex problem is the disposition and redeployment of specialized manufacturing equipment while accounting for import, export and supply chain security. The problem-solving approach is discussed in detail, focusing on lean and six sigma methodologies for a solution meeting both company internal and external requirements. This combination of lean and six sigma methodology has been validated by use in a pharmaceutical company. The process flow to dispose equipment properly is presented in detail. The process details can be used as best practices by any company …

Contributors

Ledermann, Jean-Pierre, Danielson, Scott, Biekert, Russell, et al.

Created Date

2010

Antennas are required now to be compact and mobile. Traditional horizontally polarized antennas are placed in a quarter wave distance from a ground plane making the antenna system quite bulky. High impedance surfaces are proposed for an antenna ground in close proximity. A new method to achieve a high impedance surface is suggested using a metamaterial comprising an infinite periodic array of conducting loops each of which is loaded with a non-Foster element. The non-Foster element cancels the loop's inductance resulting in a material with high effective permeability. Using this material as a spacer layer, it is possible to achieve …

Contributors

Bae, Kyong Hwa, Aberle, James T., Balanis, Constantine, et al.

Created Date

2010

This study investigates the effect of the virgin granular activated carbon (GAC) on the properties of synthesized iron (hydr)oxide nanoparticles impregnated GAC (Fe-GAC) media and its ability to remove arsenate and organic trichloroethylene (TCE) from water. Fe-GAC media were synthesized from bituminous and lignite-based virgin GAC via three variations of a permanganate/Fe(II) synthesis method. Data obtained from an array of characterization techniques indicated that differences in pore size distribution and surface chemistry of the virgin GAC favor different reaction paths for the iron (hydr)oxide nanoparticles formation. Batch equilibrium isotherm testing (120 µg-As/L; 6 mg-TCE/L, 10 mM NaHCO3 at pH = …

Contributors

Cooper, Anne Marie, Hristovski, Kiril D, Olson, Larry W, et al.

Created Date

2010

ABSTRACT The participatory and interactive nature of the "Hearing in Color" project unites people from different walks of life. My interest lies in creating a space for people to explore their creativity, think critically, and hone their own voice in a safe and collaborative environment. I have discovered that all art forms: movement, voice, visual or digital, stimulate possibilities for expression and enable people to move forward in new directions. To this end, my project fused multiple avenues of engagement, innovative dance technology, and alternative or site-specific locations to create a community-based project aimed at promoting dialogue and enhancing ties …

Contributors

Britt, Melissa Suzanne, Fitzgerald, Mary, Vissicaro, Pegge, et al.

Created Date

2010

Oxidative aging is an important factor in the long term performance of asphalt pavements. Oxidation and the associated stiffening can lead to cracking, which in turn can lead to the functional and structural failure of the pavement system. Therefore, a greater understanding of the nature of oxidative aging in asphalt pavements can potentially be of great importance in estimating the performance of a pavement before it is constructed. Of particular interest are the effects of aging on asphalt rubber pavements, due to the fact that, as a newer technology, few asphalt rubber pavement sections have been evaluated for their full …

Contributors

Reed, Jordan Xavier, Kaloush, Kamil, Mamlouk, Michael, et al.

Created Date

2010

The exponential rise in unmanned aerial vehicles has necessitated the need for accurate pose estimation under any extreme conditions. Visual Odometry (VO) is the estimation of position and orientation of a vehicle based on analysis of a sequence of images captured from a camera mounted on it. VO offers a cheap and relatively accurate alternative to conventional odometry techniques like wheel odometry, inertial measurement systems and global positioning system (GPS). This thesis implements and analyzes the performance of a two camera based VO called Stereo based visual odometry (SVO) in presence of various deterrent factors like shadows, extremely bright outdoors, …

Contributors

Dhar, Anchit, Saripalli, Srikanth, Li, Baoxin, et al.

Created Date

2010

The thesis focuses on cost-efficient integration of the electro-chemical residue sensor (ECRS), a novel sensor developed for the in situ and real-time measurement of the residual impurities left on the wafer surface and in the fine structures of patterned wafers during typical rinse processes, and wireless transponder circuitry that is based on RFID technology. The proposed technology uses only the NMOS FD-SOI transistors with amorphous silicon as active material with silicon nitride as a gate dielectric. The proposed transistor was simulated under the SILVACO ATLAS Simulation Framework. A parametric study was performed to study the impact of different gate lengths …

Contributors

Pandit, Vedhas, Vermeire, Bert, Barnaby, Hugh, et al.

Created Date

2010

A systematic top down approach to minimize risk and maximize the profits of an investment over a given period of time is proposed. Macroeconomic factors such as Gross Domestic Product (GDP), Consumer Price Index (CPI), Outstanding Consumer Credit, Industrial Production Index, Money Supply (MS), Unemployment Rate, and Ten-Year Treasury are used to predict/estimate asset (sector ETF`s) returns. Fundamental ratios of individual stocks are used to predict the stock returns. An a priori known cash-flow sequence is assumed available for investment. Given the importance of sector performance on stock performance, sector based Exchange Traded Funds (ETFs) for the S&P; and Dow …

Contributors

Chitturi, Divakar, Rodriguez, Armando, Tsakalis, Konstantinos S, et al.

Created Date

2010