Matching Items (43,917)
Description
Everyday Arias for soprano and orchestra was composed largely in Arizona and completed in February 2011. The text was taken from a small collection of the composer's own poetry referencing her memories of life in rural Mississippi. Everyday Arias endeavors to elevate these prosaic experiences and settings to art, expressing the everyday as beautiful and worthy of artistic treatment. The primary compositional model for this work was Samuel Barber's Knoxville: Summer of 1915, but other influences included Charles Ives, Aaron Copland, Benjamin Britten, and Dominick Argento. Barber's and Argento's musical treatment of prose style seemed particularly appropriate to the goals of Everyday Arias. Ives and Copland used hymn tunes both to evoke certain associations of worship and as sources of interesting material. The vocal writing of all five composers was influential, but the orchestration techniques for winds are largely a product of studying Ives and Argento, while many string gestures are more obviously tied to Britten and - more historically - Debussy.The primary motive that weaves through the work features an ascending major second followed by a descending perfect fourth, in a long-short-long rhythmic pattern. As a melodic fragment, the motive is often inverted to a descending-ascending pattern, or distorted slightly by expanding the second interval to a perfect fifth, or used in retrograde. The motive was derived from the first measure of the melody "Toplady" (1830) by Thomas Hastings, better known as the hymn "Rock of Ages." In the first movement, the motive is used most frequently in sequences. The second movement treats the motive as a melodic element and as a unit in ostinati. The final movement humorously transforms it into a syncopated gesture to evoke ragtime.
Contributors
Page, Carrie Leigh (Composer) / Rogers, Rodney (Thesis advisor) / DeMars, James (Committee member) / Levy, Benjamin (Committee member) / Oldani, Robert (Committee member) / Arizona State University (Publisher)
Created
2011
Description
The nature of science (NOS) is included in the National Science Education Standards and is described as a critical component in the development of scientifically literate students. Despite the significance of NOS in science education reform, research shows that many students continue to possess naïve views of NOS. Explicit and reflective discussion as an instructional approach is relatively new in the field of research in NOS. When compared to other approaches, explicit instruction has been identified as more effective in promoting informed views of NOS, but gaps in student understanding still exist. The purpose of this study was to deepen the understanding of student learning of NOS through the investigation of two variations of explicit instruction. The subjects of the study were two seventh grade classes taught by the same classroom teacher. One class received explicit instruction of NOS within a plate tectonics unit and the second class received explicit instruction of NOS within a plate tectonics unit plus supporting activities focused on specific aspects of NOS. The instruction time for both classes was equalized and took place over a three week time period. The intention of this study was to see if the additional NOS activities helped students build a deeper understanding of NOS, or if a deep understanding could be formed solely through explicit and reflective discussion within content instruction. The results of the study showed that both classes progressed in their understanding of NOS. When the results of the two groups were compared, the group with the additional activities showed statistically significant gains on two of the four aspects of NOS assessed. These results suggest that the activities may have been valuable in promoting informed views, but more research is needed in this area.
Contributors
Melville, Melissa (Author) / Luft, Julie (Thesis advisor) / Baker, Dale (Committee member) / Brem, Sarah (Committee member) / Arizona State University (Publisher)
Created
2011
Contributors
Burton, Charlotte (Performer) / ASU Library. Music Library (Publisher)
Created
2018-04-08
Description
This study explores how grantmakers conceptualize their work with respect to issues of social justice. It seeks to answer two primary questions: What role, if any, does the philanthropic community ascribe to itself in not just ameliorating but helping solve our greatest social challenges? And if philanthropy does see itself as an agent of change, what are the barriers that limit its potential? After painting a portrait of contemporary American philanthropy, this paper applies Iris Marion Young's critique of distributive justice to philanthropy's dilemma between downstream charitable aid and upstream structural change. The thesis then turns to analysis of semi-structured interviews with eighteen of Arizona's foundation leaders to assess whether and how state-level philanthropic leaders see their work vis-á -vis social justice, and understand how external factors limit philanthropy's ability to effect maximum social change. Participants express a desire to engage in genuinely meaningful philanthropy which does more than just maintain the status quo, but identify multiple constraints, including legal barriers to fully utilizing advocacy as a tool, governmental infringement on philanthropic autonomy, the channeling of philanthropic resources toward basic needs as a result of the recession, and a grantmaking orientation that prioritizes short term programs that yield swift, measurable results as opposed to longer term efforts.
Contributors
Lester, Eva Lorraine (Author) / Zatz, Marjorie S (Thesis advisor) / Haglund, LaDawn (Committee member) / Romero, Mary (Committee member) / Arizona State University (Publisher)
Created
2011
Description
This study contributes to the ongoing discussion of Mathematical Knowledge for Teaching (MKT). It investigates the case of Rico, a high school mathematics teacher who had become known to his colleagues and his students as a superbly effective mathematics teacher. His students not only developed excellent mathematical skills, they also developed deep understanding of the mathematics they learned. Moreover, Rico redesigned his curricula and instruction completely so that they provided a means of support for his students to learn mathematics the way he intended. The purpose of this study was to understand the sources of Rico's effectiveness. The data for this study was generated in three phases. Phase I included videos of Rico's lessons during one semester of an Algebra II course, post-lesson reflections, and Rico's self-constructed instructional materials. An analysis of Phase I data led to Phase II, which consisted of eight extensive stimulated-reflection interviews with Rico. Phase III consisted of a conceptual analysis of the prior phases with the aim of creating models of Rico's mathematical conceptions, his conceptions of his students' mathematical understandings, and his images of instruction and instructional design. Findings revealed that Rico had developed profound personal understandings, grounded in quantitative reasoning, of the mathematics that he taught, and profound pedagogical understandings that supported these very same ways of thinking in his students. Rico's redesign was driven by three factors: (1) the particular way in which Rico himself understood the mathematics he taught, (2) his reflective awareness of those ways of thinking, and (3) his ability to envision what students might learn from different instructional approaches. Rico always considered what someone might already need to understand in order to understand "this" in the way he was thinking of it, and how understanding "this" might help students understand related ideas or methods. Rico's continual reflection on the mathematics he knew so as to make it more coherent, and his continual orientation to imagining how these meanings might work for students' learning, made Rico's mathematics become a mathematics of students--impacting how he assessed his practice and engaging him in a continual process of developing MKT.
Contributors
Lage Ramírez, Ana Elisa (Author) / Thompson, Patrick W. (Thesis advisor) / Carlson, Marilyn P. (Committee member) / Castillo-Chavez, Carlos (Committee member) / Saldanha, Luis (Committee member) / Middleton, James A. (Committee member) / Arizona State University (Publisher)
Created
2011
Description
Services outsourcing is a prevalent yet problematic phenomenon. On the one hand, more and more firms are outsourcing services function. On the other hand, we are faced with many services outsourcing failures. This research attempts to uncover some of the omitted causes of services outsourcing failure. It extends a conceptual paper that used social network theory to examine the shifting of the triadic relationship structures among the service buyer, service supplier and the buyer's customers at different stages of the services outsourcing arrangements and its performance implications. This study empirically examines these performance implications. Specifically, this research defines the concept of bridge transfer, which denotes the weakening and dissolution of operational ties between the service buyer firms' and their end customers and the appearing and strengthening of operational ties between the service supplier firms and the end customers. It also empirically derives a measurement scale for this new construct. Further, the effects of bridge transfer on supplier's appropriation behavior, buyer's cost of quality and end customers' quality perception are examined in the context of customer facing services and are contrasted with those entail little or no customer interactions. In addition, the moderating roles of buyer-supplier relationship on the effects of bridge transfer are also examined. An Internet-based survey was administered to firms affiliated with CAPS Research and the Institute of Supply Management as the primary data source (n=137). Principal Component Analyses were used to derive a composite score for each of the model construct. Then linear regressions were used to detect the effects of bridge transfer on services outsourcing outcomes and to detect the moderating role of buyer-supplier relationships on these effects. The results show that bridge transfer is positively correlated to suppliers' appropriate behavior and negatively correlated to end customer's quality perception in the context of customer facing services. The effects of bridge transfer are not found for services that entail little or no interactions with the end customers. Instead, buyer-supplier relationship is found to be a key influencing factor to services outsourcing outcomes in this context. This study helps to pinpoint some of the omitted causes of services outsourcing failures and shed light on how to manage services outsourcing for success.
Contributors
Li, Mei (Author) / Choi, Thomas Y. (Thesis advisor) / Dooley, Kevin J (Committee member) / Bitner, Mary-Jo (Committee member) / Arizona State University (Publisher)
Created
2011
Description
With the advent of technologies such as web services, service oriented architecture and cloud computing, modern organizations have to deal with policies such as Firewall policies to secure the networks, XACML (eXtensible Access Control Markup Language) policies for controlling the access to critical information as well as resources. Management of these policies is an extremely important task in order to avoid unintended security leakages via illegal accesses, while maintaining proper access to services for legitimate users. Managing and maintaining access control policies manually over long period of time is an error prone task due to their inherent complex nature. Existing tools and mechanisms for policy management use different approaches for different types of policies. This research thesis represents a generic framework to provide an unified approach for policy analysis and management of different types of policies. Generic approach captures the common semantics and structure of different access control policies with the notion of policy ontology. Policy ontology representation is then utilized for effectively analyzing and managing the policies. This thesis also discusses a proof-of-concept implementation of the proposed generic framework and demonstrates how efficiently this unified approach can be used for analysis and management of different types of access control policies.
Contributors
Kulkarni, Ketan (Author) / Ahn, Gail-Joon (Thesis advisor) / Yau, Stephen S. (Committee member) / Huang, Dijiang (Committee member) / Arizona State University (Publisher)
Created
2011
Description
Drawing from Foucault's notion of heterotopias, my dissertation identifies and examines three distinct but related events that resignified (re-imagined) Chile during 2010, the year of its Bicentenary, namely: the Rescue of the 33 Miners trapped in the San José mine, the Chilean Military Parade performed in celebration of Chilean Independence, and the Mapuche Hunger Strike of 32 indigenous people accused of terrorism by the Chilean State. My central hypothesis states that these three events constitute heterotopias with strong performative components that, by enacting a utopian and a dystopian nation, denounce the flaws of Chilean society. I understand heterotopias as those recursive systems that invert, perfect or contest the society they mirror. In other words: heterotopias are discursive constructions and material manifestations of social relations that dispute, support, or distort cultural assumptions, structures, and practices currently operating in the representational spaces of a given society. In addition to following the six heterotopological principles formulated by Foucault, these case studies have performance as the central constituent that defines their specificity and brings the heterotopias into existence. Due to the performative nature of these heterotopias, I have come to call them performance heterotopias, that is, sets of behaviors that enact utopias in the historical world, the place in which we live, the site in which "the erosion of our lives, our time and our history occurs," as Foucault puts it. Here, performance would act as the interface, the point of interaction, and suture between the conceived, the perceived and the representational spaces each heterotopia articulates. Thus, a performance heterotopia would be a particular type of heterotopia which is enacted through performance. A relevant aspect that emerged from my research is that heterotopic places not only mirror, contest, and compensate their own host society, but also refer to, and intersect with other contemporaneous heterotopias enacted in that society. In my conclusion I suggest that such interactions also happen between heterotopias that emerge in different countries and cultures. If so, the mapping of utopias enacted in the macro socio geographies of Latin American countries could offer new perspectives to understand the sociopolitical processes that are underway in the region.
Contributors
Bravo Goldsmith, Néstor (Author) / Underiner, Tamara (Thesis advisor) / Melo, Carla (Committee member) / Foster, David W (Committee member) / Arizona State University (Publisher)
Created
2011
Description
Nicotine is thought to underlie the reinforcing and dependence-producing effects of tobacco-containing products. Nicotine supports self-administration in rodents, although measures of its reinforcing effects are often confounded by procedures that are used to facilitate acquisition, such as food restriction, prior reinforcement training, or response-contingent co-delivery of a naturally reinforcing light. This study examined whether rats acquire nicotine self-administration in the absence of these facilitators. A new mathematical modeling procedure was used to define the criterion for acquisition and to determine dose-dependent differences in rate and asymptote levels of intake. Rats were trained across 20 daily 2-h sessions occurring 6 days/week in chambers equipped with active and inactive levers. Each active lever press resulted in nicotine reinforcement (0, 0.015, 0.03, 0.06 mg/kg, IV) and retraction of both levers for a 20-s time out, whereas inactive lever presses had no consequences. Acquisition was defined by the best fit of a logistic function (i.e., S-shaped) versus a constant function (i.e., flat line) for reinforcers obtained across sessions using a corrected Akaike information criterion (AICc) as a model selection tool. The results showed an inverted-U shaped function for dose in relation to the percentage of animals that acquired nicotine self-administration, with 46% acquiring at 0.015 mg/kg, 73% at 0.03 mg/kg, and 58% at 0.06 mg/kg. All saline rats failed to acquire as expected. For rats that acquired nicotine self-administration, multiple model comparisons demonstrated that the asymptote (highest number of reinforcers/session) and half learning point (h; session during which half the assymptote had been achieved) were justified as free parameters of the reinforcers/session function, indicating that these parameters vary with nicotine dose. Asymptote exhibited an inverted U-shaped function across doses and half learning point exhibited a negative relationship to dose (i.e., the higher the dose the fewer sessions to reach h). These findings suggest that some rats acquire nicotine self-administration without using procedures that confound measures of acquisition rate. Furthermore, the modeling approach provides a new way of defining acquisition of drug self-administration that takes advantage of using all data generated from individual subjects and is less arbitrary than some criteria that are currently used.
Contributors
Cole, Natalie (Author) / Neisewander, Janet L (Thesis advisor) / Sanabria, Federico (Thesis advisor) / Bimonte-Nelson, Heather A. (Committee member) / Olive, Michael F (Committee member) / Arizona State University (Publisher)
Created
2011
Description
In this thesis, I present a lab-on-a-chip (LOC) that can separate and detect Escherichia Coli (E. coli) in simulated urine samples for Urinary Tract Infection (UTI) diagnosis. The LOC consists of two (concentration and sensing) chambers connected in series and an integrated impedance detector. The two-chamber approach is designed to reduce the non-specific absorption of proteins, e.g. albumin, that potentially co-exist with E. coli in urine. I directly separate E. coli K-12 from a urine cocktail in a concentration chamber containing micro-sized magnetic beads (5 µm in diameter) conjugated with anti-E. coli antibodies. The immobilized E. coli are transferred to a sensing chamber for the impedance measurement. The measurement at the concentration chamber suffers from non-specific absorption of albumin on the gold electrode, which may lead to a false positive response. By contrast, the measured impedance at the sensing chamber shows ~60 kÙ impedance change between 6.4x104 and 6.4x105 CFU/mL, covering the threshold of UTI (105 CFU/mL). The sensitivity of the LOC for detecting E. coli is characterized to be at least 3.4x104 CFU/mL. I also characterized the LOC for different age groups and white blood cell spiked samples. These preliminary data show promising potential for application in portable LOC devices for UTI detection.
Contributors
Kim, Sangpyeong (Author) / Chae, Junseok (Thesis advisor) / Phillips, Stephen M. (Committee member) / Blain Christen, Jennifer M. (Committee member) / Arizona State University (Publisher)
Created
2011