Matching Items (178)
Description
The present study tested the factor structure of the externalizing disorders (e.g. attention-deficit hyperactivity disorder (ADHD), conduct disorder (SE), and substance experimentation (SE) ) in adolescence. In addition, this study tested the influence of the GABRA2 gene on the factors of the externalizing spectrum. Confirmatory factor analyses were used to test the factor structure of the externalizing spectrum. Specifically, three competing alternate confirmatory factor analytic models were tested: a one-factor model where all disorders loaded onto a single externalizing factor, a two-factor model where CD and SE loaded onto one factor and ADHD loaded onto another, and a three-factor model, where all three disorders loaded onto separate factors. Structural equation modeling was used to test the effect of a GABRA2 SNP, rs279858, on the factors of the externalizing spectrum. Analyses revealed that a three-factor model of externalizing disorders with correlated factors fit the data best. Additionally, GABRA2 had a significant effect on the SE factor in adolescence, but not on the CD or ADHD factors. These findings demonstrate that the externalizing disorders in adolescence share commonalities but also have separate sources of systematic variance. Furthermore, biological mechanisms may act as a unique etiological factor in the development of adolescent substance experimentation.
ContributorsWang, Frances L (Author) / Chassin, Laurie (Thesis advisor) / Lemery-Chalfant, Kathryn (Committee member) / Geiser, Christian (Committee member) / Arizona State University (Publisher)
Created2012
Description
This doctoral project involves a multi-disciplined analysis concerning Agamemnon's daughters (Iphigenia, Electra, and Chrysothemis) and how these women's gender and virtues were depicted as compared with ideal Greek women in antiquity. Three composers in three different eras adapted the literary and musical depictions of these women based on the composer's society, culture, audience expectations, musical climate and personal goals. George Friedrich Handel's Oreste (1734), Christoph Willibald von Gluck's Iphigénie en Tauride (1779) and Richard Strauss's Elektra (1909) are the main operas used for this analysis. The Mycenaean House of Atreus, a dynasty which the ancient Greeks traced back to the time of the Trojan War in the 12th century BCE, figures prominently in Greek mythology and ancient Greek literature concerning the Trojan War. The House of Atreus included Agamemnon, King of Mycenae and commander of the Greeks at Troy, his wife Clytaemnestra, their son Orestes, and their daughters: Iphigenia, Electra, and Chrysothemis. For over three thousand years, the legend of this ancient family has inspired musical scores, plays, poetry, architecture, sculpture, paintings, and movies. Numerous studies examine the varying interpretations of the House of Atreus myths; few, if any, address the ways in which female Greek virtues are depicted operatically within the myths. In the music of Handel's Oreste, Gluck's Iphigénie en Tauride and Strauss's Elektra, Agamemnon's daughters contradict the ideal Greek woman while still exhibiting heroic or idealistic virtues. The analysis of the operas in their social contexts will address the audience expectations and composers' dramatic interpretations of the myth. This analysis will include: a brief overview of ancient Greek culture and gender roles; a literary comparison of the original dramas to the librettos; societal audience expectations in their historical contexts; musical, philosophical, and literary influences on the composers; and an examination of music composed in two different centuries and in three different styles. The brief historical, cultural, literary, and musical analyses highlight the absence and presence of ancient Greek virtues, and how these women can be presented both as heroic, or virtuous, and unvirtuous in the same production.
ContributorsRocklein, Robyn Michele (Author) / FitzPatrick, Carole (Thesis advisor) / Campbell, Andrew (Committee member) / Dreyfoos, Dale (Committee member) / Mills, Robert (Committee member) / Rogers, Rodney (Committee member) / Arizona State University (Publisher)
Created2012
Description
Calcium hydroxide carbonation processes were studied to investigate the potential for abiotic soil improvement. Different mixtures of common soil constituents such as sand, clay, and granite were mixed with a calcium hydroxide slurry and carbonated at approximately 860 psi. While the carbonation was successful and calcite formation was strong on sample exteriors, a 4 mm passivating boundary layer effect was observed, impeding the carbonation process at the center. XRD analysis was used to characterize the extent of carbonation, indicating extremely poor carbonation and therefore CO2 penetration inside the visible boundary. The depth of the passivating layer was found to be independent of both time and choice of aggregate. Less than adequate strength was developed in carbonated trials due to formation of small, weakly-connected crystals, shown with SEM analysis. Additional research, especially in situ analysis with thermogravimetric analysis would be useful to determine the causation of poor carbonation performance. This technology has great potential to substitute for certain Portland cement applications if these issues can be addressed.
ContributorsHermens, Stephen Edward (Author) / Bearat, Hamdallah (Thesis director) / Dai, Lenore (Committee member) / Mobasher, Barzin (Committee member) / Barrett, The Honors College (Contributor) / Chemical Engineering Program (Contributor)
Created2015-05
Description
The transition from high school to college is marked by many changes, one of the most significant being the increased accessibility of alcohol, putting college students at high risk for alcohol-related consequences. It is imperative to identify factors that can protect young adults against these risks during this critical period. Although peers become increasingly influential in college, extant literature has shown that parents still have an impact on their children's behavior during this time. While parents spend less time with their children after college matriculation, they may indirectly protect against risky drinking behaviors by instilling certain values into their children before they make this transition. Using data from a large sample of students during their senior year of high school and their freshman year of college, the current study sought to examine interactive effects of parental communication and parental knowledge and caring on drinking behavior, and the extent to which internalization of personal drinking values mediate these effects. The primary study hypotheses were tested using path analysis conducted in Mplus 7.0. Full information maximum likelihood (FIML) estimation was utilized to estimate missing data and bootstrapping was used to address non-normality in the data. Results showed that, for those whose parents were high in knowledge and caring, higher levels of communication were associated with lower risk for alcohol use and problems at wave 3 through less permissive drinking values at wave 1. This finding has important implications for prevention approaches designed to reduce risk for heavy drinking and related problems during the transition to college.
ContributorsHartman, Jessica Danielle (Author) / Corbin, William (Thesis director) / Knight, George (Committee member) / Chassin, Laurie (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor)
Created2015-05
Description
As green buildings become more popular, the challenge of structural engineer is to move beyond simply green to develop sustainable, and high-performing buildings that are more than just environmentally friendly. For decades, Portland cement-based products have been known as the most commonly used construction materials in the world, and as a result, cement production is a significant source of global carbon dioxide (CO2) emissions, and environmental impacts at all stages of the process. In recent years, the increasing cost of energy and resource supplies, and concerns related to greenhouse gas emissions and environmental impacts have ignited more interests in utilizing waste and by-product materials as the primary ingredient to replace ordinary Portland cement in concrete systems. The environmental benefits of cement replacement are enormous, including the diversion of non-recycled waste from landfills for useful applications, the reduction in non-renewable energy consumption for cement production, and the corresponding emission of greenhouse gases. In the vast available body of literature, concretes consisting activated fly ash or slag as the binder have been shown to have high compressive strengths, and resistance to fire and chemical attack. This research focuses to utilize fly ash, by-product of coal fired power plant along with different alkaline solutions to form a final product with comparable properties to or superior than those of ordinary Portland cement concrete. Fly ash mortars using different concentration of sodium hydroxide and waterglass were dry and moist cured at different temperatures prior subjecting to uniaxial compressive loading condition. Since moist curing continuously supplies water for the hydration process of activated fly ash mortars while preventing thermal shrinkage and cracking, the samples were more durable and demonstrated a noticeably higher compressive strength. The influence of the concentration of the activating agent (4, or 8 M sodium hydroxide solution), and activator-to-binder ratio of 0.40 on the compressive strengths of concretes containing Class F fly ash as the sole binder is analyzed. Furthermore, liquid sodium silicate (waterglass) with silica modulus of 1.0 and 2.0 along with activator-to-binder ratio of 0.04 and 0.07 was also studied to understand its performance in contributing to the strength development of the activated fly ash concrete. Statistical analysis of the compressive strength results show that the available alkali concentration has a larger influence on the compressive strengths of activated concretes made using fly ash than the influence of curing parameters (elevated temperatures, condition, and duration).
ContributorsBanh, Kingsten Chi (Author) / Neithalath, Narayanan (Thesis director) / Rajan, Subramaniam (Committee member) / Mobasher, Barzin (Committee member) / Civil, Environmental and Sustainable Engineering Programs (Contributor) / Barrett, The Honors College (Contributor)
Created2013-05
Description
This research paper creates a modern score transcription of selected choral works by composer Alexander Chesnokov. The life and works of Alexander Chesnokov are almost completely unknown in the United States. A collection of his works is housed in the New York Public Library (NYPL). Selected transcripts from this collection provide insight into the works and style of Alexander Chesnokov. They may also serve as a study guide and point for further research and explorations into the life and compositions of this Russian composer. The sets of transcriptions within this paper were created from a microfilm copy from the NYPL's archival holdings. This study comprises transcriptions of selected scores, a discussion of errors and editorial choices, text translations, and a brief history of choral performance and style during pre-revolutionary Russia, the time period during which this composer lived and wrote.
ContributorsSmolnik, Carric (Author) / Gentry, Gregory (Thesis advisor) / Reber, William (Committee member) / Rockmaker, Jody (Committee member) / Campbell, Andrew (Committee member) / Saucier, Catherine (Committee member) / Arizona State University (Publisher)
Created2011
Description
Contemporary theories of trauma identify the creation of a coherent trauma narrative and therapeutic exposure to trauma memories as potential recovery mechanisms. These factors are often inherent to the disclosure process, resulting in a parallel theoretical framework for experimental research that conceptualizes disclosure as a therapeutic intervention. The present investigation examined the moderational impact of disclosure following trauma on the link between trauma severity and symptoms of Posttraumatic Stress Disorder (PTSD). Disclosure status (discloser or nondiscloser), highest extent of disclosure, and length of delay to first disclosure were tested in a series of moderated regression models among a sample of female physical and sexual assault victims (N = 1087). Findings indicate that engaging in more detailed disclosure is associated with a modest beneficial impact on PTSD, but that the majority of nondisclosers have lower symptom levels than disclosers. There is also evidence for a small subset of nondisclosers that remain at heightened distress. A unique effect was found for disclosure delay, such that for physical assault, delaying disclosure is associated with a progressively weakening negative relation between time since the trauma and PTSD. At extreme delays, the association may become positive. Findings have implications for theories of trauma recovery and therapeutic interventions, including concerns about early interventions that emphasize disclosure. Future research may benefit from focusing on nondisclosing trauma victims to gain greater insight into recovery processes.
ContributorsFields, Briana (Author) / Barrera, Manuel (Thesis advisor) / Holtfreter, Kristy (Committee member) / Knight, George (Committee member) / Chassin, Laurie (Committee member) / Arizona State University (Publisher)
Created2010
Description
The purpose of this project is to examine the three Sonatas for Violin and Piano by Taiwanese composer Dr. Wen-Pin Hope Lee. The inspiration for these three sonatas comes from different aspects of the culture of Taiwan, and these influences occur so naturally within the music that one can neglect the beauty of them. In daily life, people tend to ignore those simple things that occur around them, but if they just pay close attention, there are always beautiful elements that can bring small miracles to their life. Lee's sonatas are the result of his careful consideration of the beautiful elements of his own culture. Through careful examination, the author has discovered that important musical ideas can be found in the artistic expression of one's native culture. Lee adapted the musical resources of Taiwan, including Taiwanese opera and the musical culture of the aboriginal people of Taiwan. In addition, he began infusing his compositions with Western musical elements due to his studies in the United States. The result is a series of three sonatas composed in a diverse array of styles. The three Sonatas for Violin and Piano by Lee are part of the genre of duo chamber music, a collaborative art demanding strong connections between the two performers. The process of ii rehearsing complicated pieces such as these poses a challenge that a solo performer does not encounter. While it is always beneficial to explore the background of the music before performing it, a deeper understanding of the music is achieved during the rehearsal process. The author has been invited by Lee to perform these three sonatas in 2011 with three distinguished violinists and, in preparation for these performances, has already recorded the three sonatas. Such an opportunity has created an examination of the collaborative process within the music and the challenges faced by both performers. In addition to an examination of the musical influences on the composition of these works and a biography of the composer, the author will also provide a performance guide to the works in the hopes of encouraging future performances.
ContributorsChen, Chia I (Author) / Campbell, Andrew (Thesis advisor) / Britton, David (Committee member) / Jiang, Danwen (Committee member) / Rogers, Rodney (Committee member) / Arizona State University (Publisher)
Created2010
Description
Prior research suggests that African American adults are more likely than White adults to experience negative alcohol use outcomes such as alcohol use disorder (AUD) despite reporting lower rates of alcohol consumption. Research also shows that African Americans experience higher rates of depression, which can increase risk for alcohol consumption and AUD through drinking to cope. The current study examined the role of depressive symptoms and drinking to cope in alcohol consumption and AUD symptoms among White and Black/African American college students. Participants completed an online survey during the fall (T1) and spring semester (T2) of their first year of college (N = 2,168, 62.8% female, 75.8% White). Path analyses were conducted to examine whether depressive symptoms and drinking to cope mediated the association between race/ethnicity and alcohol consumption and AUD symptoms, as well as whether race/ethnicity moderated the associations between depressive symptoms, drinking to cope, and alcohol use outcomes. Results indicated that White participants had higher levels of depressive symptoms and alcohol consumption than African American participants. Drinking to cope at T1 was also associated with more depressive symptoms at T1, higher levels of alcohol consumption at T2, and higher levels of AUD symptoms at T2. Also, there was an indirect effect of depressive symptoms on AUD symptoms via drinking to cope. Results from multigroup path analyses suggested that depressive symptoms were more strongly associated with drinking to cope for White students than African American students. There were no significant racial/ethnic differences in the associations between depressive symptoms or drinking to cope and alcohol use outcomes. Future research should examine the roles of race, depression, and drinking to cope in alcohol use outcomes for college students.
ContributorsTaylor, Nicole (Author) / Su, Jinni (Thesis director) / Corbin, William (Committee member) / Chassin, Laurie (Committee member) / Sanford School of Social and Family Dynamics (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2020-12
Description
Testing mediation models is critical for identifying potential variables that need to be targeted to effectively change one or more outcome variables. In addition, it is now common practice for clinicians to use multiple informant (MI) data in studies of statistical mediation. By coupling the use of MI data with statistical mediation analysis, clinical researchers can combine the benefits of both techniques. Integrating the information from MIs into a statistical mediation model creates various methodological and practical challenges. The authors review prior methodological approaches to MI mediation analysis in clinical research and propose a new latent variable approach that overcomes some limitations of prior approaches. An application of the new approach to mother, father, and child reports of impulsivity, frustration tolerance, and externalizing problems (N = 454) is presented. The results showed that frustration tolerance mediated the relationship between impulsivity and externalizing problems. The new approach allows for a more comprehensive and effective use of MI data when testing mediation models.
ContributorsPapa, Lesther A. (Author) / Litson, Kaylee (Author) / Lockhart, Ginger (Author) / Chassin, Laurie (Author) / Geiser, Christian (Author) / College of Liberal Arts and Sciences (Contributor) / Department of Psychology (Contributor)
Created2015-11-13