The ignition of the first sources of light marked the end of the cosmic dark ages, an era when the Universe transitioned from the relatively simple conditions following the Big Bang to the complex tapestry of dark matter, baryons, and pervasive cosmic radiation fields we see today. To better understand this uncharted cosmic epoch, we primarily utilize hydrodynamical, N-body simulations to model the assembly of the first galaxies at redshifts greater than ten and the stars that form within them. These simulations begin from cosmological initial conditions, employ a robust, non-equilibrium chemo-thermodynamic model, and take advantage of adaptive-grid-refinement to probe the multi-scale, complex process of star formation from ab initio principles. We explore the consequences that metal enrichment has on the process of star formation, confirming the presence of a critical metallicity for low-mass star formation. To assess the observational prospects of these primeval stellar populations with next-generation telescopes, like the James Webb Space Telescope, we constrain the star formation efficiency of both metal-enriched and metal-free star formation in a typical first galaxy. We also resolve the formation of individual metal-enriched stars in simulations that ultimately began from cosmological scales, allowing meaningful comparisons between our simulations and the recently discovered ultra-faint dwarf satellite galaxies, the suspected analogs of the first galaxies in the local Universe. / text

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This study gives attention to the effects of instability of placement, emotional disturbances, and at-risk behaviors on the academic performance of adolescents in foster care, specifically males. The purpose of this study was to examine the academic success of male adolescents in foster care and environmental influences that prevent many children from excelling. Data were extracted and analyzed (Chi-Square) from 50 of200 case files (active and discharged). The sample represented male residents (12 to 18 years of age) of a privately run, state licensed residential group home in Georgia. Academic performance was measured by grade point average. Twenty-eight percent did not function on grade level while 72% functioned on grade level. There was no statistical significance between academic achievement and instability of placement (X2= .577, p = .448), emotional disturbances(X2= .759, p = -.348), aggressive/violent behavior (X2= .020, p = .887), and sexual activity (X2=.732, p = .392). However, there was statistical significance found between academic achievement and substance use (X2= 4.095, p = .043). An additional key finding in this study was 74% of the adolescents had a mental health diagnosis but had only been in foster care less than one year. Therefore, additional research should be conducted to determine the preexisting conditions adolescents experience before entering foster care. The findings from this study can perhaps encourage the child welfare community to investigate other variables that may impact the academic achievement of adolescents in foster care.

This study offers a better understanding of the tourism experiences of at risk youth. A Husserlian phenomenology consisting of semi-structured interviews with a group of at risk youth residing in a treatment centre reveals a broader understanding of the tourism phenomenon as well as the essence of these experiences. Findings revealed that at risk youth value tourism and the opportunities that these experiences provide. The importance of support during this multi-phasic experience contributed to outcomes including increased learning opportunities, liberty to exercise free-choice and independence, skill acquisition, gains in social capital, improved self-perception and ultimately, increased resilience. / October 2016

Cloud computing at a high level comprises of the availability of hardware, software and technical support via a network protocol to a remote client on a pay-per-use basis. Businesses using Cloud resources has been increasing steadily in the very recent past and the number of Cloud service providers (CSP) are increasing as well. The challenges that characterize a Cloud data center include: on-demand service, elasticity, resources pooling, broad network access, service meters. As the customer base is in creasing and their resource requirement and usage pattern has been becoming highly volatile, proper utilization of the resources and generating revenue by appropriately charging the clients for their uses has become an even more challenging research problem. In other words, Cloud resource pricing has emerged as an important and pressing problem to study for ever increasing utility of Cloud computing. Literature review reveals that there are economy-based models (cash flow, net present value etc.) used for charging mechanism suggested by many researchers. Most of these models are rigid that they are not build with the core of Cloud - elasticity in mind. Also, the economic models do not provide flexibility of the economy of scale to either increase or decrease the resource requirement and appropriately charge for such increase or decrease in resource use. For my thesis, I have designed and developed a Cloud resources pricing model that satisfies two important constraints: the dynamic ability of the model to provide a high satisfaction guarantee measured as Quality of Service (QoS) - from users perspectives, and profitability constraints - from the Cloud service providers perspectives. I have employed financial option theory and treated the Cloud resources as underlying assets to capture the realistic value of the Cloud Compute Commodities (C3). I have priced the Cloud resources using my model. Through this research, I show that the Cloud parameters can be mapped to financial economic model and that this model can be effectively implemented for resource pricing purpose. I discuss the results of pricing Cloud Compute Commodities (C3) for various input parameters, such as the age of the resource and quality of service. / February 2016

Modest Mussorgsky (1839-1881) never published his piano suite, Pictures at an Exhibition. The first publication of the Pictures was Nikolai Rimsky-Korsakov’s (1844-1908) piano edition in 1886, five years after Mussorgsky’s death. Among several piano editions of Pictures, Manfred Schandert’s urtext piano edition of 1984 has shed new light on the piano suite. The urtext edition is based on a facsimile of Mussorgsky’s autograph, and Schandert’s authoritative urtext contains all of Mussorgsky’s musical indications that previous editions neglected to include. Previous orchestrations based on less comprehensive editions include well-known orchestrations by Maurice Ravel (1875-1937) and Leopold Stokowski (1882-1977). Vladimir Ashkenazy (b. 1937), on the other hand, derived his orchestration directly from the Schandert edition. In this study I argue that Ashkenazy offers “corrections” to his predecessors, Ravel and Stokowski, whose orchestrations differ—at times radically—from Mussorgsky’s autograph. This dissertation thus will explore the significant features of Ashkenazy’s orchestration in relation to the urtext edition by comparing it to the orchestrations of Ravel and Stokowski. In an age of attempts to present “authentic” versions of past music, Ashkenazy’s orchestration provides an authenticity that other orchestrations lack. Ashkenazy’s orchestration of Pictures at an Exhibition provides conductors an alternative performance option that is both effective and more closely related to Mussorgsky’s autograph.

This dissertation examines the experiences of foster youth as they prepare for life after emancipation from state custody. Every year in the U.S., around 25,000 youth in foster care reach the legal age of emancipation and subsequently leave state’s custody. Colloquially, this transition is known as “aging out”. Although the youth who “age out” are legally considered adults, few are ready to meet the challenges of adulthood independently. These youth are more likely than their same aged peers to end up incarcerated, face unemployment or underemployment, drop out before finishing high school, and experience substance abuse problems or a mental health disorder (Shirk & Stangler, 2005). This study adds to the growing body of knowledge about the experiences of teenaged youth “aging out” of foster care. Though empirical studies have documented challenges facing emancipated youth (Craven & Lee, 2006), very little work has examined the actual experiences of emancipation from the perspective of youth and their guardians. Using illustrative case methodology, this dissertation captures life story perspectives on the experiences of teenaged foster youth and their guardians as they prepare for life after emancipation. A qualitative approach was utilized to provide experiential data to inform the practice standards and program effectiveness associated with the services and supports these youth received while in custody of the State’s Department for Youth and Families. A project of the Vermont Research Partnership, the study was able to utilize logistical and ethical consultation from state agency leaders during the development of methodology. The findings describe and analyze the challenges and successes that youth in foster care encounter as they prepare for life after emancipation. Interview data with youth, guardians and service providers highlighted themes related to preparedness including the barriers to youth perceptions of adulthood, the ubiquity of trauma experiences, the cost of staff turnover, the importance of long term relationship, and the “pull” of the biological family. The results of the study reveal a complex intertwining of personal, familial and systemic issues that converge to hinder preparedness for independent living despite the determined efforts of foster parents, service providers, families and the youth themselves. The study suggests areas for future research as well as policy recommendations related to service provision for teenaged youth in custody as well as emancipated youth.

Films are a reflection of their time, and portrayals of the Vietnamese in film are reflective of the attitudes of American culture and society toward Vietnamese people. Films are particularly important because for many viewers, all they know about Vietnam and the Vietnamese is what they have seen on screen. This is why it is so important to examine the racist portrayals of the Vietnamese that have been presented, where they come from, and how and why they have changed. The significance of this study is that it combines historical studies of issues such as immigration, race relations, and cultural history with literary narratives of these films to explore the reasons why the Vietnamese have been portrayed initially so negatively and why that portrayal is only recently beginning to become more positive. I use six major Hollywood films and three recurring images to explore the ways that the portrayal of the Vietnamese has changed over time. Through a study of the images of the dehumanized enemy, the Vietnamese woman as prostitute, and Vietnamese civilians as backward peasants, the changing nature of racism in the films becomes evident. Blatant racism is found in the films of the 1960s and 1970s due to a long history of racism toward Asians and Asian Americans and the nature of the war itself. The films of the 1980s and beyond, coupled with the waves of refugees and opening of relations with Vietnam begin to show the Vietnamese as human beings. The most recent film of the twenty-first century honors the former enemy. There have been vast improvements, but other advancements remain to be made in race relations on screen and in real life.

The purpose of this study is to examine the relationship of Black males being raised in a mother-only household and their career aspirations. The absence of the father in a home stands at the forefront as the cause of family dysfunction, which subsequently leads to the destruction of many hopes and dreams of the Black male.Is a mother-only household a preconceived environment for failure for the Black male?