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ASU Electronic Theses and Dissertations


This collection includes most of the ASU Theses and Dissertations from 2011 to present. ASU Theses and Dissertations are available in downloadable PDF format; however, a small percentage of items are under embargo. Information about the dissertations/theses includes degree information, committee members, an abstract, supporting data or media.

In addition to the electronic theses found in the ASU Digital Repository, ASU Theses and Dissertations can be found in the ASU Library Catalog.

Dissertations and Theses granted by Arizona State University are archived and made available through a joint effort of the ASU Graduate College and the ASU Libraries. For more information or questions about this collection contact or visit the Digital Repository ETD Library Guide or contact the ASU Graduate College at gradformat@asu.edu.


Resource Type
Date Range
2004 2020


This study investigates the relationships between ESL teachers' beliefs about writing instruction and their use of computer technology in the first-year composition classroom. Utilizing a sociocultural approach, the study analyzes the connections between ESL teachers' instructional beliefs and the technological practices that emerge as a result of these beliefs and decisions. Qualitative research was conducted, and data was collected through classroom observations, teacher interviews, and course materials. Data analysis reveals that regardless of teachers' differing beliefs about writing instruction, they use computer technology when it enhances their teaching and students' learning. It also reveals that factors such as teacher attitude …

Contributors
Erdem, Ebru, Van Gelderen, Elly, Nilsen, Don, et al.
Created Date
2004

Weevils are among the most diverse and evolutionarily successful animal lineages on Earth. Their success is driven in part by a structure called the rostrum, which gives weevil heads a characteristic "snout-like" appearance. Nut weevils in the genus Curculio use the rostrum to drill holes into developing fruits and nuts, wherein they deposit their eggs. During oviposition this exceedingly slender structure is bent into a straightened configuration - in some species up to 90° - but does not suffer any damage during this process. The performance of the snout is explained in terms of cuticle biomechanics and rostral curvature, as …

Contributors
Jansen, Michael Andrew, Franz, Nico M, Chawla, Nikhilesh, et al.
Created Date
2009

Previous studies have shown that adequate content knowledge is a necessary, but not sufficient, requirement for affective teaching. While legislation requests teachers to be "highly qualified" in a subject area, such as physics, many teachers are frequently asked to teach in an area when they are not certified through a teaching license to do so. This study uses mixed methods to examine the knowledge of beginning physics teachers. Through semi-structured interviews, classroom observations, and concept maps, the pedagogical content knowledge, subject matter knowledge, and practices of three groups of beginning secondary physics teachers were explored. Data were analyzed qualitatively using …

Contributors
Neakrase, Jennifer Jean, Luft, Julie, Semken, Steven, et al.
Created Date
2010

Borda's social choice method and Condorcet's social choice method are shown to satisfy different monotonicities and it is shown that it is impossible for any social choice method to satisfy them both. Results of a Monte Carlo simulation are presented which estimate the probability of each of the following social choice methods being manipulable: plurality (first past the post), Borda count, instant runoff, Kemeny-Young, Schulze, and majority Borda. The Kemeny-Young and Schulze methods exhibit the strongest resistance to random manipulability. Two variations of the majority judgment method, with different tie-breaking rules, are compared for continuity. A new variation is proposed …

Contributors
Jennings, Andrew Blake, Hurlbert, Glenn, Barcelo, Helene, et al.
Created Date
2010

Children with dis/abilities the world over are widely required to sacrifice their human rights to education, equity, community, and inclusion. Fewer than 10% of children with dis/abilities in developing countries attend school. Namibia, Africa, where this study took place, is no different. Despite Namibia's adoption of international covenants and educational policy initiatives, children with dis/abilities continue to be overwhelmingly excluded from school. The body of literature on exclusion in sub-Saharan Africa is laden with the voices of teachers, principals, government education officials, development organizations, and scholars. This study attempted to foreground the voices of rural Namibian families of children with …

Contributors
Bartlett, Margaret, Blue Swadener, Beth, Artiles, Alfredo, et al.
Created Date
2010

Many expect renewable energy technologies to play a leading role in a sustainable energy supply system and to aid the shift away from an over-reliance on traditional hydrocarbon resources in the next few decades. This dissertation develops environmental, policy and social models to help understand various aspects of photovoltaic (PV) technologies. The first part of this dissertation advances the life cycle assessment (LCA) of PV systems by expanding the boundary of included processes using hybrid LCA and accounting for the technology-driven dynamics of environmental impacts. Hybrid LCA extends the traditional method combining bottom-up process-sum and top-down economic input-output (EIO) approaches. …

Contributors
Zhai, Pei, Williams, Eric D, Allenby, Braden, et al.
Created Date
2010

More than half of all accessible freshwater has been appropriated for human use, and a substantial portion of terrestrial ecosystems have been transformed by human action. These impacts are heaviest in urban ecosystems, where impervious surfaces increase runoff, water delivery and stormflows are managed heavily, and there are substantial anthropogenic sources of nitrogen (N). Urbanization also frequently results in creation of intentional novel ecosystems. These "designed" ecosystems are fashioned to fulfill particular needs of the residents, or ecosystem services. In the Phoenix, Arizona area, the augmentation and redistribution of water has resulted in numerous component ecosystems that are atypical for …

Contributors
Larson, Elisabeth Knight, Grimm, Nancy B, Hartnett, Hilairy E, et al.
Created Date
2010

General ecological thought pertaining to plant biology, conservation, and urban areas has rested on two potentially contradictory underlying assumptions. The first is that non-native plants can spread easily from human developments to “pristine” areas. The second is that native plants cannot disperse through developed areas. Both assume anthropogenic changes to ecosystems create conditions that favor non-native plants and hinder native species. However, it is just as likely that anthropogenic alterations of habitats will favor certain groups of plant species with similar functional traits, whether native or not. Migration of plants can be divided into the following stages: dispersal, germination, establishment, …

Contributors
Gade, Kristin Joan, Kinzig, Ann P, Grimm, Nancy B, et al.
Created Date
2010

Embedded Networked Systems (ENS) consist of various devices, which are embedded into physical objects (e.g., home appliances, vehicles, buidlings, people). With rapid advances in processing and networking technologies, these devices can be fully connected and pervasive in the environment. The devices can interact with the physical world, collaborate to share resources, and provide context-aware services. This dissertation focuses on collaboration in ENS to provide smart services. However, there are several challenges because the system must be - scalable to a huge number of devices; robust against noise, loss and failure; and secure despite communicating with strangers. To address these challenges, …

Contributors
Kim, Su Jin, Gupta, Sandeep K. S., Dasgupta, Partha, et al.
Created Date
2010

Gamma-ray burst observations provide a great opportunity for cosmography in high redshift. Some tight correlations between different physical properties of GRBs are discovered and used for cosmography. However, data selection, assumptions, systematic uncertainty and some other issues affect most of them. Most importantly, until the physical origin of a relation is understood, one should be cautious to employ the relation to utilize Gamma ray bursts for cosmography. In the first part of this dissertation, I use Liang-Zhang correlation to constrain ¦« Cold Dark Matter standard cosmology and a particular class of brane cosmology (brane-induced gravity model). With the most probable …

Contributors
Behkam, Razieh, Windhorst, Rogier, Rhoads, James, et al.
Created Date
2010

According to UNESCO's 2010 survey results of 58 member countries, 34 of the countries had less than 1 percent of children enrolled in special education programs. Ten of these countries provided special education provision for less than .01 percent of children. However, the demand to educate students with disabilities in inclusive educational settings continues to grow. Thus, there are many national initiatives aimed at finding ways of creating forms of inclusive educational settings that can respond to children with special needs. In this study, the purpose was to better understand the processes of local adaptation and modification of UNESCO's inclusive …

Contributors
Ciyer, Aysegul, Swadener, Beth B, Artiles, Alfredo, et al.
Created Date
2010

Optical Instrument Transformers (OIT) have been developed as an alternative to traditional instrument transformers (IT). The question "Can optical instrument transformers substitute for the traditional transformers?" is the main motivation of this study. Finding the answer for this question and developing complete models are the contributions of this work. Dedicated test facilities are developed so that the steady state and transient performances of analog outputs of a magnetic current transformer (CT) and a magnetic voltage transformer (VT) are compared with that of an optical current transformer (OCT) and an optical voltage transformer (OVT) respectively. Frequency response characteristics of OIT outputs …

Contributors
Kucuksari, Sadik, Karady, George G, Heydt, Gerald T, et al.
Created Date
2010

Great disasters can often serve as birthing grounds for national transformation. As communities work to recover and rebuild, opportunities to reassess of prevailing development theories and programs may arise. As traditional development programs, supported by top-down development theories and billions in foreign aid, have not changed Haiti's impoverished status, such an opportunity has been presented to the Caribbean nation. Just a few months removed from the devastating 7.0 earthquake of Jan 12, 2010, this study identified the emergent thinking about development as expressed by key informants (N=21) from six entity types involved in Haiti's rebuilding efforts - government agencies, social …

Contributors
Innocent, Darlye Élise, Knopf, Richard, Phillips, Rhonda, et al.
Created Date
2010

Owing to their special characteristics, group III-Nitride semiconductors have attracted special attention for their application in a wide range of optoelectronic devices. Of particular interest are their direct and wide band gaps that span from ultraviolet to the infrared wavelengths. In addition, their stronger bonds relative to the other compound semiconductors makes them thermally more stable, which provides devices with longer life time. However, the lattice mismatch between these semiconductors and their substrates cause the as-grown films to have high dislocation densities, reducing the life time of devices that contain these materials. One possible solution for this problem is to …

Contributors
Diaz Rivas, Rosa Estela, Mahajan, Subhash, Petuskey, William, et al.
Created Date
2010

Peer-to-peer systems are known to be vulnerable to the Sybil attack. The lack of a central authority allows a malicious user to create many fake identities (called Sybil nodes) pretending to be independent honest nodes. The goal of the malicious user is to influence the system on his/her behalf. In order to detect the Sybil nodes and prevent the attack, a reputation system is used for the nodes, built through observing its interactions with its peers. The construction makes every node a part of a distributed authority that keeps records on the reputation and behavior of the nodes. Records of …

Contributors
Cárdenas-Haro, José Antonio, Konjevod, Goran, Richa, Andrea W., et al.
Created Date
2010

In Angel Rama's La Novela Latinoamericana 1920-1980 (1982), the influential critic discloses a map of 20th century Latin American narrative. Rama stresses three literary styles merging into the phenomenon called Boom: fantastic, regional and realistic. On the other hand, another influential critic such as Nestor Garcia Canclini, in his article "Aesthetic Moments of Latin Americanism" suggests the 60's and 70's as a period in which art worked as a herald of utopia, trying to include in the present a future that seemed feasible. Rama's narrative map does not even mention writers as Manuel Puig and Rubem Fonseca. Both, the Argentine …

Contributors
Sueldo, Martin, Volek, Emil, Acereda, Alberto, et al.
Created Date
2010

ABSTRACT The Orpheus Male Chorus of Phoenix occupies and maintains an historical place in the musical and civic history of the City of Phoenix and the State of Arizona. Organized in November, 1929, the Orpheus Male Chorus of Phoenix (OMC) is the only performing arts organization in Phoenix that can claim eighty-one years of continuous performance. The chorus gained popularity locally, nationally, and internationally in its first five decades. The breadth of the chorus's recognition began to decline in the latter part of the 20th century, but the chorus still retains a loyal following of audience members. This study focuses …

Contributors
Butler Ii, Robert Charles, Schildkret, David, Holbrook, Amy, et al.
Created Date
2010

In the past two decades, the population of so-called "foreign brides" in Taiwan has increased significantly. "Foreign brides" are female immigrants from Southeast Asian countries who have married Taiwanese men through marriage brokers. The term "new immigrant women" is used in this study to describe this particular group of women because it is a self-identified, less derogatory term. New immigrant women's families are at significant disadvantages with their low social class, the commodified nature of marriage, and societal discrimination against them. Guided by a feminist epistemology and grounded in family studies and eco-cultural theories, this study explores this particular group …

Contributors
Chen, Tzu-Hui, Moore, Elsie, Fonow, Mary Margaret, et al.
Created Date
2010

The constant scaling of supply voltages in state-of-the-art CMOS processes has led to severe limitations for many analog circuit applications. Some CMOS processes have addressed this issue by adding high voltage MOSFETs to their process. Although it can be a completely viable solution, it usually requires a changing of the process flow or adding additional steps, which in turn, leads to an increase in fabrication costs. Si-MESFETs (silicon-metal-semiconductor-field-effect-transistors) from Arizona State University (ASU) on the other hand, have an inherent high voltage capability and can be added to any silicon-on-insulator (SOI) or silicon-on-sapphire (SOS) CMOS process free of cost. This …

Contributors
Lepkowski, William, Thornton, Trevor, Bakkaloglu, Bertan, et al.
Created Date
2010

The Burning Man Festival, a free-spirited yet highly sophisticated social experiment celebrating "radical self expression and radical self reliance" is well-known for its large-scale and highly interactive public art installations. For twenty-five years, Burners (as festival participants are called) have been creating and displaying amazing works of art for the annual event, which currently takes place in Nevada's Black Rock Desert. In the desert, Burners build a temporary city, appropriate the open space to serve as their "tabula rasa" or "blank canvas," and unleash their creative potential in the name of "active participation" and social civility. In the process, they …

Contributors
Stewart, Karen Ann, Goodall, Jr., Harold, Margolis, Eric, et al.
Created Date
2010

Concerns about Peak Oil, political instability in the Middle East, health hazards, and greenhouse gas emissions of fossil fuels have stimulated interests in alternative fuels such as biofuels, natural gas, electricity, and hydrogen. Alternative fuels are expected to play an important role in a transition to a sustainable transportation system. One of the major barriers to the success of alternative-fuel vehicles (AFV) is the lack of infrastructure for producing, distributing, and delivering alternative fuels. Efficient methods that locate alternative-fuel refueling stations are essential in accelerating the advent of a new energy economy. The objectives of this research are to develop …

Contributors
Kim, Jong-Geun, Kuby, Michael J, Wentz, Elizabeth A, et al.
Created Date
2010

Current trends in the Computer Aided Engineering (CAE) involve the integration of legacy mesh-based finite element software with newer solid-modeling kernels or full CAD systems in order to simplify laborious or highly specialized tasks in engineering analysis. In particular, mesh generation is becoming increasingly automated. In addition, emphasis is increasingly placed on full assembly (multi-part) models, which in turn necessitates an automated approach to contact analysis. This task is challenging due to increases in algebraic system size, as well as increases in the number of distorted elements - both of which necessitate manual intervention to maintain accuracy and conserve computer …

Contributors
Grishin, Alexander, Shah, Jami J., Davidson, Joe, et al.
Created Date
2010

ABSTRACT Many musicians, both amateur and professional alike, are continuously seeking to expand and explore their performance literature and repertory. Introducing new works into the standard repertory is an exciting endeavor for any active musician. Establishing connections, commissioning new works, and collaborating on performances can all work together toward the acceptance and success of a composer's music within an instrument community. For the flute, one such composer is Daniel Dorff (b. 1956). Dorff, a Philadelphia-based composer, has written for symphony orchestra, clarinet, contrabassoon, and others; however, his award-winning works for flute and piccolo are earning him much recognition. He has …

Contributors
Rich, Angela Marie, Buck, Elizabeth Y, Hill, Gary W, et al.
Created Date
2010

ABSTRACT In this study, I used a qualitative approach to explore the music teacher role identities of six beginning music teachers prior to, during, and after their student teaching experience. Data collection included participant-observation, interviews, and e-mail communication. Specifically, I looked at what each of these beginning music teachers discussed when describing themselves in the role of music teacher. These participants' music teacher role identities appeared to focus on four main components, while also remaining unique from one another. Those four components were: musical selves, instructional selves, professional selves, and ideological selves. Further, the participants' role identities appeared to change …

Contributors
Paise, Michele Paynter, Schmidt, Margaret, Stauffer, Sandra L, et al.
Created Date
2010

ABSTRACT This research examines what contextual elements shape a community court. In the past several decades, the court system has lost trust with the American public. Citizens thought the courts were too complex, expensive, didn't address the issues of crime, and were out of touch with their communities. A movement called community justice began to grow in the 1990s. As part of this movement the concept of problem solving courts grew. Community focused courts were part of this. Community courts are unique in that the courts reach out to the community to help solve problems identified by citizens, businesses, and …

Contributors
Dicus, Bonnie Carol, Cayer, N. J., Alozie, Nicolas, et al.
Created Date
2010

Surgery is one of the most important functions in a hospital with respect to operational cost, patient flow, and resource utilization. Planning and scheduling the Operating Room (OR) is important for hospitals to improve efficiency and achieve high quality of service. At the same time, it is a complex task due to the conflicting objectives and the uncertain nature of surgeries. In this dissertation, three different methodologies are developed to address OR planning and scheduling problem. First, a simulation-based framework is constructed to analyze the factors that affect the utilization of a catheterization lab and provide decision support for improving …

Contributors
Li, Qing, Fowler, John W, Mohan, Srimathy, et al.
Created Date
2010

Portable devices rely on battery systems that contribute largely to the overall device form factor and delay portability due to recharging. Membraneless microfluidic fuel cells are considered as the next generation of portable power sources for their compatibility with higher energy density reactants. Microfluidic fuel cells are potentially cost effective and robust because they use low Reynolds number flow to maintain fuel and oxidant separation instead of ion exchange membranes. However, membraneless fuel cells suffer from poor efficiency due to poor mass transport and Ohmic losses. Current microfluidic fuel cell designs suffer from reactant cross-diffusion and thick boundary layers at …

Contributors
Salloum, Kamil, Posner, Jonathan D, Adrian, Ronald, et al.
Created Date
2010

W.A. Mozart was a masterful creator of music and drama as well as a keen observer of human relationships. Librettists were enamored of his ability to bring their words to life with his music. His truthful portrayal of human relationships, particularly involving women, was highly influenced by his own life experiences. Through these relationships he learned to create characters and music that clearly depict female sibling relationships in the eighteenth century. A review of educational opportunities for women during the eighteenth century, Mozart's personal relationships, as well as selected roles in his operas will help to explain Mozart's portrayal of …

Contributors
Walker, Anne Elise, Doan, Jerry, Dreyfoos, Dale, et al.
Created Date
2010

Optimization of surgical operations is a challenging managerial problem for surgical suite directors. This dissertation presents modeling and solution techniques for operating room (OR) planning and scheduling problems. First, several sequencing and patient appointment time setting heuristics are proposed for scheduling an Outpatient Procedure Center. A discrete event simulation model is used to evaluate how scheduling heuristics perform with respect to the competing criteria of expected patient waiting time and expected surgical suite overtime for a single day compared to current practice. Next, a bi-criteria Genetic Algorithm is used to determine if better solutions can be obtained for this single …

Contributors
Gul, Serhat, Fowler, John W., Denton, Brian T., et al.
Created Date
2010

ABSTRACT The early twentieth century saw changing attitudes in gender roles and the advancement of the "New Woman." Despite the decline in the availability of homesteading land in the US West, homesteading still offered a means for women to achieve or enact newfound independence, and the letters of Elinore Pruitt Stewart, Elizabeth Corey, and Cecilia Hennel Hendricks offer a varied view of the female homesteading experience. This dissertation focuses upon the functionality of epistolary discourse from early twentieth century homesteading women within a literary and historical framework in order to establish the significance of letters as literary texts and examine …

Contributors
Skipper, Alicia L., Horan, Elizabeth, Boyd, Patricia, et al.
Created Date
2010

In mixture-process variable experiments, it is common that the number of runs is greater than in mixture-only or process-variable experiments. These experiments have to estimate the parameters from the mixture components, process variables, and interactions of both variables. In some of these experiments there are variables that are hard to change or cannot be controlled under normal operating conditions. These situations often prohibit a complete randomization for the experimental runs due to practical and economical considerations. Furthermore, the process variables can be categorized into two types: variables that are controllable and directly affect the response, and variables that are uncontrollable …

Contributors
Cho, Tae-Yeon, Montgomery, Douglas C, Borror, Connie M, et al.
Created Date
2010

The emergence of new technologies as well as a fresh look at analyzing existing processes have given rise to a new type of response characteristic, known as a profile. Profiles are useful when a quality variable is functionally dependent on one or more explanatory, or independent, variables. So, instead of observing a single measurement on each unit or product a set of values is obtained over a range which, when plotted, takes the shape of a curve. Traditional multivariate monitoring schemes are inadequate for monitoring profiles due to high dimensionality and poor use of the information stored in functional form …

Contributors
Gupta, Shilpa, Montgomery, Douglas, Borror, Connie M, et al.
Created Date
2010

Investments in climate science come with an expectation of social benefit. Science policy--decision processes through which individuals and organizations support, manage, and evaluate research--plays an important role in determining those outcomes. Yet the details of how climate science policy actually works have received very little attention amid academic and policy-focused discussions of climate science. This dissertation examines climate science policy with particular attention to how it supports "public values" that justify research investments. It is widely recognized funding for climate science in the US has advanced knowledge considerably in recent decades but failed to produce useful information for decision makers. …

Contributors
Meyer, Ryan Mclaren, Sarewitz, Daniel, David, Guston, et al.
Created Date
2010

This dissertation discusses the findings of an ethnographic exploratory study of Turkana nomadic pastoralist children's sociocultural practices of their everyday lifestyles and science curriculum and instruction in Kenyan early childhood curriculum. The study uses the findings from Turkana elders to challenge the dominant society in Kenya that draws from Western education ideology to unfairly criticize Turkana traditional nomadic cultural practices as resistant to modern education. Yet Turkana people have to rely on the cultural knowledge of their environment for survival. In addition, the community lives in abject poverty caused by the harsh desert environment which has contributed to parents' struggle …

Contributors
Ng'Asike, John Teria, Swadener, Beth B., Luft, Julie, et al.
Created Date
2010

Patterns of social conflict and cooperation among irrigation communities in southern Arizona from the Classic Hohokam through the Historic period (c. 1150 to c. 1900 CE) are analyzed. Archaeological survey of the Gila River Indian Community has yielded data that allow study of populations within the Hohokam core area (the lower Salt and middle Gila valleys). An etic design approach is adopted that analyzes tasks artifacts were intended to perform. This research is predicated on three hypotheses. It is suggested that (1) projectile point mass and performance exhibit directional change over time, and weight can therefore be used as a …

Contributors
Loendorf, Chris Ronald, Simon, Arleyn, Clark, Geoffrey, et al.
Created Date
2010

The highly-social plateau pika (Lagomorpha: Ochotona curzoniae) excavates vast burrow complexes in alpine meadows on the Tibetan Plateau. Colonies of over 300 individuals/ha have been reported. As an ecosystem engineer, their burrowing may positively impact ecosystem health by increasing plant species diversity, enhancing soil mixing, and boosting water infiltration. However, pikas are commonly regarded as pests, and are heavily poisoned throughout their range. The underlying assumption of eradication programs is that eliminating pikas will improve rangeland quality and decrease soil erosion. This dissertation explores the link between plateau pikas and the alpine meadow ecosystem in Qinghai Province, PRC. This research …

Contributors
Hogan, Brigitte Wieshofer, Smith, Andrew T., Anderies, J. Marty, et al.
Created Date
2010

Established in 1983 by the College Board, the National Hispanic Recognition Program annually recognizes approximately 3,300 Hispanic students who scored the highest on the Preliminary SAT/National Merit Scholarship Qualifying Test (PSAT/NMSQT). These top-performing high school students are recruited by U.S. universities as National Hispanic Scholars with the offer of scholarships. Few studies have been conducted in the past 20 years about National Hispanic Scholars; and none have investigated the role of the scholars' parents in their children's academic success. The purpose of this study was to address the gap in the literature by providing a comprehensive view of the scholar-parent …

Contributors
Ulibarri-Nasio, Crystal Starr, Turner, Caroline S.V., Cuadraz, Gloria, et al.
Created Date
2010

In My Dreams is a song cycle for mezzo-soprano, narrator, and piano, based on the poetry of survivors of childhood sex trafficking. It was created to raise awareness of trafficking through music and poetry through the expression of individual dreams and voices. In My Dreams recounts the devastating loss of childhood and celebrates empowering words of survival. The poetry was collected in poetry workshops held in Calcutta and Delhi India in January 2009. After the poems were selected, translated, and edited, composer Dr. Gerard Yun set them to music. This document outlines the process of creating and performing this unique …

Contributors
Glenn, Melissa Walker, Fitzpatrick, Carole, Pritchard, Melissa, et al.
Created Date
2010

In the United States, Escherichia coli O157:H7 (E. coli O157:H7) is the most frequent cause of hemolytic uremic syndrome (HUS) and it is also the primary cause of acute renal failure in children. The most common route of the infection is ingestion of contaminated meat or dairy product originating from cattle or vegetables contaminated with bovine manure. Since cattle are the main reservoir for human infection with E. coli O157:H7, the reduction of intestinal colonization by these bacteria in cattle is the best approach to prevent human infections. Intimin is an outer membrane protein of E. coli O157:H7 that plays …

Contributors
Topal, Emel, Mason, Hugh S., Bingham, Scott E., et al.
Created Date
2010

This research explores the influence of brand and shelf display cues on consumer preferences for products that appear to be in scarce supply. In so doing, I develop a theoretical model of how scarcity operates in the retail environment, identifying when it increases purchase intentions, when it decreases purchase intentions, and the underlying mechanisms driving these outcomes. Across a series of five studies, I find that when consumers infer that products are scarce due to popularity, they are more likely to buy these products, but only when the products are unfamiliar nonfood brands. I also find that scarce products are …

Contributors
Castro, Iana Alexandra, Ketcham, Andrea M, Nowlis, Stephen M, et al.
Created Date
2010

Some cyanobacteria, referred to as boring or euendolithic, are capable of excavating tunnels into calcareous substrates, both mineral and biogenic. The erosive activity of these cyanobacteria results in the destruction of coastal limestones and dead corals, the reworking of carbonate sands, and the cementation of microbialites. They thus link the biological and mineral parts of the global carbon cycle directly. They are also relevant for marine aquaculture as pests of mollusk populations. In spite of their importance, the mechanism by which these cyanobacteria bore remains unknown. In fact, boring by phototrophs is geochemically paradoxical, in that they should promote precipitation …

Contributors
Ramírez-Reinat, Edgardo Luis, Garcia-Pichel, Ferran, Chandler, Douglas, et al.
Created Date
2010

Coronaviruses are medically important viruses that cause respiratory and enteric infections in humans and animals. The recent emergence through interspecies transmission of severe acute respiratory syndrome coronavirus (SARS-CoV) strongly supports the need for development of vaccines and antiviral reagents. Understanding the molecular details of virus assembly is an attractive target for development of such therapeutics. Coronavirus membrane (M) proteins constitute the bulk of the viral envelope and play key roles in assembly, through M-M, M-spike (S) and M-nucleocapsid (N) interactions. M proteins have three transmembrane domains, flanked by a short amino-terminal domain and a long carboxy-terminal tail located outside and …

Contributors
Arndt, Ariel, Hogue, Brenda G, Jacobs, Bertram, et al.
Created Date
2010

Goal specification is an important aspect of designing autonomous agents. A goal does not only refer to the set of states for the agent to reach. A goal also defines restrictions on the paths the agent should follow. Temporal logics are widely used in goal specification. However, they lack the ability to represent goals in a non-deterministic domain, goals that change non-monotonically, and goals with preferences. This dissertation defines new goal specification languages by extending temporal logics to address these issues. First considered is the goal specification in non-deterministic domains, in which an agent following a policy leads to a …

Contributors
Zhao, Jicheng, Baral, Chitta, Kambhampati, Subbarao, et al.
Created Date
2010

Advances in the area of ubiquitous, pervasive and wearable computing have resulted in the development of low band-width, data rich environmental and body sensor networks, providing a reliable and non-intrusive methodology for capturing activity data from humans and the environments they inhabit. Assistive technologies that promote independent living amongst elderly and individuals with cognitive impairment are a major motivating factor for sensor-based activity recognition systems. However, the process of discerning relevant activity information from these sensor streams such as accelerometers is a non-trivial task and is an on-going research area. The difficulty stems from factors such as spatio-temporal variations in …

Contributors
Chatapuram Krishnan, Narayanan, Panchanathan, Sethuraman, Sundaram, Hari, et al.
Created Date
2010

An advantage of doubly fed induction generators (DFIGs) as compared to conventional fixed speed wind turbine generators is higher efficiency. This higher efficiency is achieved due to the ability of the DFIG to operate near its optimal turbine efficiency over a wider range of wind speeds through variable speed operation. This is achieved through the application of a back-to-back converter that tightly controls the rotor current and allows for asynchronous operation. In doing so, however, the power electronic converter effectively decouples the inertia of the turbine from the system. Hence, with the increase in penetration of DFIG based wind farms, …

Contributors
Gautam, Durga, Vittal, Vijay, Heydt, Gerald, et al.
Created Date
2010

The construction industry is becoming more aware of its impact on the environment. It has become more sensitive to how it operates and how it can reduce the carbon footprint of the construction process. This research identifies the source of and quantities of the carbon emissions created by an operating modular home fabrication plant in producing, transporting and installing modular structures. This study demonstrates how to measure the carbon footprint created in the production of a modular home. It quantifies and reports the results on a home, on a single module and on a per square foot basis. The primary …

Contributors
Kawecki, Leonard Robert, Bashford, Howard H, Davis, Joseph, et al.
Created Date
2010

Public health surveillance is a special case of the general problem where counts (or rates) of events are monitored for changes. Modern data complements event counts with many additional measurements (such as geographic, demographic, and others) that comprise high-dimensional covariates. This leads to an important challenge to detect a change that only occurs within a region, initially unspecified, defined by these covariates. Current methods are typically limited to spatial and/or temporal covariate information and often fail to use all the information available in modern data that can be paramount in unveiling these subtle changes. Additional complexities associated with modern health …

Contributors
Davila, Saylisse, Runger, George C, Montgomery, Douglas C, et al.
Created Date
2010

Urban ecosystems cover less than 3% of the Earth's land surface, yet more than half of the human population lives in urban areas. The process of urbanization stresses biodiversity and other ecosystem functions within and far beyond the city. To understand the mechanisms underlying observed changes in biodiversity patterns, several observational and experimental studies were performed in the metropolitan area of Phoenix, Arizona, and the surrounding Sonoran Desert. The first study was comprised of seven years of arthropod monitoring using pitfall traps in common urban land-use types. This study revealed differences in community structure, diversity and abundance over time and …

Contributors
Bang, Christofer, Faeth, Stanley H., Sabo, John L., et al.
Created Date
2010

Since the 1920's, the school musical has been an important event in American high schools and in the lives of students. This study begins with a condensed history of the American musical theatre, into focus on selected shows' value as potential high school repertoire. Review of literature included studies of high school musical theatre, production guides and related materials, and writings both against and in favor of musicals at the high school level. The school musical is usually undertaken as an extra-curricular activity led by performing arts faculty. This study focuses on the preparation, responsibilities, and attitudes of high school …

Contributors
Davey, Debra Jo, Stauffer, Sandra, Bush, Jeffrey, et al.
Created Date
2010

The purpose of this study is to examine how community-based youth theater ensembles create conditions for youth to practice cultural agency and to develop a sense of themselves as valuable resources in a broader community development process. The researcher employed a qualitative methodology, using a critical and interpretive case study approach which enabled her to document and analyze three community-based youth theaters in New York City: Find Your Light, a playwriting/performance program for youth associated with the NYC shelter system; viBeStages, an all-girl youth ensemble (part of viBe Theater Experience or "viBe"); and Ifetayo Youth Ensemble (IYE), a multi-age ensemble …

Contributors
Ikemire, Heather Stickeler, Underiner, Tamara, Catlaw, Thomas, et al.
Created Date
2010