Matching Items (228)
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In this study, the Arizona State University Mathematics and Science Teaching Fellows 2010 program was analyzed qualitatively from start to finish to determine the impact of the research experience on teachers in the classroom. The sample for the study was the 2010 cohort of eight high school science teachers. Erickson's

In this study, the Arizona State University Mathematics and Science Teaching Fellows 2010 program was analyzed qualitatively from start to finish to determine the impact of the research experience on teachers in the classroom. The sample for the study was the 2010 cohort of eight high school science teachers. Erickson's (1986) interpretive, participant observational fieldwork method was used to report data by means of detailed descriptions of the research experience and classroom implementation. Data was collected from teacher documents, interviews, and observations. The findings revealed various factors that were responsible for an ineffective implementation of the research experience in the classroom such as research experience, curriculum support, availability of resources, and school curriculum. Implications and recommendations for future programs are discussed in the study.
ContributorsSen, Tapati (Author) / Baker, Dale (Thesis advisor) / Culbertson, Robert (Committee member) / Margolis, Eric (Committee member) / Arizona State University (Publisher)
Created2012
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Nitride semiconductors have wide applications in electronics and optoelectronics technologies. Understanding the nature of the optical recombination process and its effects on luminescence efficiency is important for the development of novel devices. This dissertation deals with the optical properties of nitride semiconductors, including GaN epitaxial layers and more complex heterostructures.

Nitride semiconductors have wide applications in electronics and optoelectronics technologies. Understanding the nature of the optical recombination process and its effects on luminescence efficiency is important for the development of novel devices. This dissertation deals with the optical properties of nitride semiconductors, including GaN epitaxial layers and more complex heterostructures. The emission characteristics are examined by cathodoluminescence spectroscopy and imaging, and are correlated with the structural and electrical properties studied by transmission electron microscopy and electron holography. Four major areas are covered in this dissertation, which are described next. The effect of strain on the emission characteristics in wurtzite GaN has been studied. The values of the residual strain in GaN epilayers with different dislocation densities are determined by x-ray diffraction, and the relationship between exciton emission energy and the in-plane residual strain is demonstrated. It shows that the emission energy increases withthe magnitude of the in-plane compressive strain. The temperature dependence of the emission characteristics in cubic GaN has been studied. It is observed that the exciton emission and donor-acceptor pair recombination behave differently with temperature. The donor-bound exciton binding energy has been measured to be 13 meV from the temperature dependence of the emission spectrum. It is also found that the ionization energies for both acceptors and donors are smaller in cubic compared with hexagonal structures, which should contribute to higher doping efficiencies. A comprehensive study on the structural and optical properties is presented for InGaN/GaN quantum wells emitting in the blue, green, and yellow regions of the electromagnetic spectrum. Transmission electron microscopy images indicate the presence of indium inhomogeneties which should be responsible for carrier localization. The temperature dependence of emission luminescence shows that the carrier localization effects become more significant with increasing emission wavelength. On the other hand, the effect of non-radiative recombination on luminescence efficiency also varies with the emission wavelength. The fast increase of the non-radiative recombination rate with temperature in the green emitting QWs contributes to the lower efficiency compared with the blue emitting QWs. The possible saturation of non-radiative recombination above 100 K may explain the unexpected high emission efficiency for the yellow emitting QWs Finally, the effects of InGaN underlayers on the electronic and optical properties of InGaN/GaN quantum wells emitting in visible spectral regions have been studied. A significant improvement of the emission efficiency is observed, which is associated with a blue shift in the emission energy, a reduced recombination lifetime, an increased spatial homogeneity in the luminescence, and a weaker internal field across the quantum wells. These are explained by a partial strain relaxation introduced by the InGaN underlayer, which is measured by reciprocal space mapping of the x-ray diffraction intensity.
ContributorsLi, Di (Author) / Ponce, Fernando (Thesis advisor) / Culbertson, Robert (Committee member) / Yu, Hongbin (Committee member) / Shumway, John (Committee member) / Menéndez, Jose (Committee member) / Arizona State University (Publisher)
Created2012
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Group III-nitride semiconductors have attracted much attention for applications on high brightness light-emitting diodes (LEDs) and laser diodes (LDs) operating in the visible and ultra-violet spectral range using indium gallium nitride in the active layer. However, the device efficiency in the green to red range is limited by quantum-confined Stark

Group III-nitride semiconductors have attracted much attention for applications on high brightness light-emitting diodes (LEDs) and laser diodes (LDs) operating in the visible and ultra-violet spectral range using indium gallium nitride in the active layer. However, the device efficiency in the green to red range is limited by quantum-confined Stark effects resulting from the lattice mismatch between GaN and InGaN. In this dissertation, the optical and micro-structural properties of GaN-based light emitting structures have been analyzed and correlated by utilizing cathodoluminescence and transmission electron microscopy techniques. In the first section, optimization of the design of GaN-based lasers diode structures is presented. The thermal strain present in the GaN underlayer grown on sapphire substrates causes a strain-induced wavelength shift. The insertion of an InGaN waveguide mitigates the mismatch strain at the interface between the InGaN quantum well and the GaN quantum barrier. The second section of the thesis presents a study of the characteristics of thick non-polar m-plane InGaN films and of LED structures containing InGaN quantum wells, which minimize polarization-related electric fields. It is found that in some cases the in-plane piezoelectric fields can still occur due to the existence of misfit dislocations which break the continuity of the film. In the final section, the optical and structural properties of InGaAlN quaternary alloys are analyzed and correlated. The composition of the components of the film is accurately determined by Rutherford backscattering spectroscopy.
ContributorsHuang, Yu (Author) / Ponce, Fernando A. (Thesis advisor) / Tsen, Kong-Thon (Committee member) / Treacy, Michael (Committee member) / Drucker, Jeffery (Committee member) / Culbertson, Robert (Committee member) / Arizona State University (Publisher)
Created2011
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During the 1970's to 90's, scholars in the fields of Jewish Studies, anthropology and sociology (notably, Hellen Epstein, Larry Langer and Yosef Yerushalmi), developed the idea of generational trauma theory, when analyzing the trauma inflicted upon European Jewish populations during the Holocaust. Epstein argues that trauma is passed down from

During the 1970's to 90's, scholars in the fields of Jewish Studies, anthropology and sociology (notably, Hellen Epstein, Larry Langer and Yosef Yerushalmi), developed the idea of generational trauma theory, when analyzing the trauma inflicted upon European Jewish populations during the Holocaust. Epstein argues that trauma is passed down from generation to generation, while Langer argues that the second generation interprets the trauma in their own way. Other important terms in trauma theory include liturgical time, sites of memory, historical trauma and the historical trauma response. Scholars who analyze American Indian communities, like Yellow Horse Brave Heart and Durran/Durran, readily took up this theory, applying it to the Native American experience. One area where this theory has been applied to is the Native American Boarding School experience. The purpose of this paper is to analyze the efficacy of applying the post-Holocaust trauma theory to the Native American boarding school experience. In order to determine the effectiveness of the boarding schools, one must analyze the boarding school experience, beginning at the philosophical underpinnings of the boarding school, and then discussing the impacts that the boarding schools had on the students and finally, the impact that this had on the second generation. However, this approach has a number of flaws, such as the differences between native communities and post-Holocaust, American, Jewish communities, as discussed in the Philosophy of American Indian Studies. The length of the boarding schools was also longer than the length of the Holocaust. The fact that Native Americans faced repeated trauma, in a way that post-Holocaust American Jews did not. The trauma also changed for both native peoples and post-Holocaust Jews, making it difficult for there to be a single response to trauma. The philosophical bases of the Holocaust and boarding schools were also different. The post-Holocaust generational trauma approach also has a number of applications to native peoples. This includes the psychological aspect of trauma. The use of terminology by native scholars. Native peoples also developed concepts like sites of memory and liturgical time. Finally, both the post-Holocaust Jewas and Native Americans have used trauma for political ends. The conclusion is that post-Holocaust generational trauma theory has some applications to native peoples, but the application is limited. A scholar must take into careful consideration the native peoples who they are working with.
ContributorsMongeau, Michael Philip (Author) / Benkert, Volker (Thesis director) / Riding In, James (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / American Indian Studies Program (Contributor) / Barrett, The Honors College (Contributor)
Created2017-12
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Sigmund Freud's psychoanalytic theory proposes that the personality has three components, the id, superego, and ego. The id is concerned with pleasure and gain, the reason it is often identified as a human's animalistic side. Additionally, the id does not consider social rules as closely and is the uncensored portion

Sigmund Freud's psychoanalytic theory proposes that the personality has three components, the id, superego, and ego. The id is concerned with pleasure and gain, the reason it is often identified as a human's animalistic side. Additionally, the id does not consider social rules as closely and is the uncensored portion of the personality. The superego is the id's opposite; the superego considers social expectations and pressures immensely, is more self-critical and moralizing. The ego mediates the id and superego, and is understood as the realistic expression of personality which considers both the "animal" and human. A Fractured Whole: A Collection of Short Stories, explores Freud's construction of human personality in both form and content. Within the collection are three sections, each with a different pair of characters. Within each section, the same scene is written in the three "modes" of the id, superego, and ego, as three separate stories. The fifteen stories comprising this collection address the substance of daily life: sexuality, body image, competition, among other topics, to consider how a single person can balance the desires for personal pleasure and to satisfy social expectations. Writing the same scene in three "modes" allows for the observation of how the characters attitudes and actions alter under the influence of different parts of their personalities.
ContributorsOtte, Aneka (Author) / Sturges, Robert (Thesis director) / Bryant, Jason (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
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Since Dylan Roof, a white supremacist, shot and killed nine members of a black church in Charleston on June 17, 2015, Confederate symbols have stood at the center of much controversy across the United States. Although the Confederate battle flag remains the most obvious example, the debate took a particular

Since Dylan Roof, a white supremacist, shot and killed nine members of a black church in Charleston on June 17, 2015, Confederate symbols have stood at the center of much controversy across the United States. Although the Confederate battle flag remains the most obvious example, the debate took a particular form in Tennessee, centering on the image of General Nathan Bedford Forrest. Born in 1822 to a poor family, he left school early to work. Although his work in the slave trade made him a millionaire, his later participation in the massacre of over 300 black soldiers at Fort Pillow in 1864 during the Civil War and association with the Ku Klux Klan cemented his reputation as a violent racist. Yet, many white Tennesseans praised him as a hero and memorialized him. This thesis examines Nathan Bedford Forrest State Park in Benton County and Forrest Park, now Health Sciences Park, in Memphis to examine what characteristics denote a controversial memorial. Specifically, I focus on the physical form, the location, and the demographics of the area, investigating how these components work together to give rise to controversy or acceptance of the memorial's image. Physical representations greatly impact the ideas associated with the memorial while racial demographics affect whether or not Forrest's representation as a hero speaks true to modern interpretations and opinions.
Created2016-05
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This thesis explores the intersection of religion, social class, and politics during the late nineteenth century in Imperial Germany. Specifically, the focus of this work is on the Workers' Association of Saint Paul's in Aachen and Burtscheid, a Catholic working-class organization in the 1870s located in the city of Aachen,

This thesis explores the intersection of religion, social class, and politics during the late nineteenth century in Imperial Germany. Specifically, the focus of this work is on the Workers' Association of Saint Paul's in Aachen and Burtscheid, a Catholic working-class organization in the 1870s located in the city of Aachen, a rapidly industrializing city in the majority Catholic Prussian Rhineland. This organization was the largest Catholic working-class association in Germany in the 1870s, reaching 5,000 members by the middle of the decade, and also espoused the politics of Christian Socialism. This thesis explores the intersection of the possibly competing social identities of these workers between being Catholics and workers. To start, the scholarly framework of studying society and politics in Imperial Germany is discussed, especially the concept of rigidly constructed social milieus into five groups, two of them being the Catholics and the working-class, and how this work may suggest a challenge to this concept. Next, the background information of how a Catholic working-class came into existence, as it was the product of simultaneous nineteenth century processes of industrialization and a religious revival among German Catholics. The Kulturkampf was the force that politicized Catholicism in Germany, as the persecution of Catholic institutions by Prussia forced Catholics into a social and political "ghetto." Then, the Association of St. Paul's itself is discussed. First, the workers espoused their Catholic identity and religious solidarity during a time of persecution, but also emphasized the Christian basis for their brand of Socialism. This lent into their identity as part of the working-class. While they steadfastly rejected the "godlessness" of Social Democracy, the Christian Socialists also shared many similar social and political goals. This intersection between identities eventually led to political conflict in Aachen throughout the 1870s with the mainstream, bourgeois Catholics of the city. To conclude, the legacy of Christian Socialism on modern Germany is discussed, as well as its contribution to the complex politics of Imperial Germany.
Created2016-05
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Abstract. The term "sex trafficking" can mean many different things, depending on who uses it. To some, it may be synonymous with prostitution. To others, it may equate to slavery. And some may find that sex trafficking differs from both slavery and prostitution. But I find that the term "sex

Abstract. The term "sex trafficking" can mean many different things, depending on who uses it. To some, it may be synonymous with prostitution. To others, it may equate to slavery. And some may find that sex trafficking differs from both slavery and prostitution. But I find that the term "sex trafficking" is used improperly when referring to phenomena that may not entail the violation of rights of any individual involved. For this reason, various definitions of "sex trafficking" may inappropriately conflate sex trafficking with prostitution. In this essay, I argue against such a conflation through supporting a rights-based approach of defining "sex trafficking," in which every instance of true sex trafficking necessitates a violation of someone's rights. First, I begin by laying the foundation of my discussion with definitions and various government and non-government uses of the term "sex trafficking." Then, I argue for the rights-based approach. I proceed to explore how the rights-based approach relates to consent, force, coercion, deception, and competence. Then, I compile my findings, synthesize a definition, and elaborate on a few questions regarding my definition. Using the term "sex trafficking" correctly, as I argue, means that we necessarily use the term in a context of a violation of rights.
ContributorsMiller, Isaac Jonathan (Author) / de Marneffe, Peter (Thesis director) / McGregor, Joan (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
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Popular Culture of today, particularly books and movies have begun to influence the way individ- uals and society as a whole, views specific concepts. In this case, the fairly recent phenomenon of the Sci- ence Fiction Drug Niche has produced significant thought among audiences as to both the benefits and

Popular Culture of today, particularly books and movies have begun to influence the way individ- uals and society as a whole, views specific concepts. In this case, the fairly recent phenomenon of the Sci- ence Fiction Drug Niche has produced significant thought among audiences as to both the benefits and costs of cognitive enhancers in our world. Through the use of both a thorough analysis of modern films and novels on the topic as well as focus groups of the average college students this study analyzes the influence that this niche has had on the perceptions that students have towards the use of such cognitive enhancements. Small groups of students were shown the same film: Limitless, and discussion after the film displayed the students thoughts and attitudes towards the ideas shown in the film. Limitless itself falls into this Science Fiction drug niche and discusses both benefits and harms of chemical cognitive enhancement. The study indicates that audiences have thought not only about the issues that may arise with the presence of cognitive enhancement in our world but also the possible benefits of this enhancement. The results go even further to preliminarily show that there are common thoughts that arise in such situations. These common ideas that arise show, at least on a very basic level, that the presence of these Science Fiction Drug-inspired works are influencing the way audiences perceive the use of cognitive enhancement as well as influencing what doubts, questions, hopes, and fears arise from these pharmaceuticals. This preliminary study could use further research to ana- lyze the effects of popular culture on perceptions of cognitive enhancement and pharmaceuticals to alter consciousness.
ContributorsSyed, Mariha Batool (Author) / Zachary, Gregg (Thesis director) / Hurlbut, Ben (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
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Since the passage of the Federal Election Campaign Act Amendments of 1974 (FECA) up until the most recent election in 2012, presidential campaign funds have risen over five hundred percent. While money has always been an essential and critical part of any political campaign, this rise has been drastic and

Since the passage of the Federal Election Campaign Act Amendments of 1974 (FECA) up until the most recent election in 2012, presidential campaign funds have risen over five hundred percent. While money has always been an essential and critical part of any political campaign, this rise has been drastic and continues to increase at a higher rate with every election cycle, even when the numbers are adjusted for inflation. The purpose of this paper is to examine this continuous increase in cost of presidential campaigns and to analyze the different pieces that have contributed to this rise. The main pieces include two Supreme Court cases: Buckley v. Valeo and Citizens United v. Federal Elections Commission, the rise and fall of federally regulated public funding and the various pieces of a presidential campaign that have considerably higher ticket prices with each election cycle. This paper first goes through both Buckley and Citizens, describing what each Supreme Court decision did and how they effected how much money can be spent in a presidential campaign and by whom. The paper then examines each presidential election since the passage of FECA in 1974 through the last election with President Barack Obama and Mitt Romney in 2012. Each election cycle is broken down to show how much money was spent by each candidate and the Republican and Democratic National Committees, whether or not the money was received through public funds or raised privately, and subsequently the percentages of where the money was spent. While the examination of the Court cases helps to understand why so much money can be donated and contributed directly to campaigns or spent on behalf of a presidential candidate, the breakdown of where the money is spent including advertising, travel, staff salaries etc. helps to show why a presidential campaign costs over five hundred percent more today than it did forty years ago. By understanding this increase, how it was caused and where the money is going, it is more feasible to comprehend whether or not campaign finance reform should be proposed and if so, how it should be brought about.
ContributorsColby, Mikaela Nicole (Author) / Critchlow, Donald (Thesis director) / Shair-Rosenfield, Sarah (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05