1,798 research outputs found

    Persistent Evidence of a Jovian Mass Solar Companion in the Oort Cloud

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    We present an updated dynamical and statistical analysis of outer Oort cloud cometary evidence suggesting the sun has a wide-binary Jovian mass companion. The results support a conjecture that there exists a companion of mass ~ 1-4 M_Jup orbiting in the innermost region of the outer Oort cloud. Our most restrictive prediction is that the orientation angles of the orbit normal in galactic coordinates are centered on the galactic longitude of the ascending node Omega = 319 degree and the galactic inclination i = 103 degree (or the opposite direction) with an uncertainty in the normal direction subtending ~ 2% of the sky. A Bayesian statistical analysis suggests that the probability of the companion hypothesis is comparable to or greater than the probability of the null hypothesis of a statistical fluke. Such a companion could also have produced the detached Kuiper Belt object Sedna. The putative companion could be easily detected by the recently launched Wide-field Infrared Survey Explorer (WISE).Comment: 41 pages, 9 figures, submitted to ICARU

    The Effects of Deformation on the Electrical Resistivity of Molybdenum Single Crystals

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    Deformation effects on electrical resistivity of single crystals of high-purity molybdenu

    Sleep/Fatigue Risk (No.13) MLD

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    Elaine Whitmire, Cello

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    Sonata for Cello and Piano in D minor, Op. 40 / Dmitri Shostakovich; Sonata for Cello and Piano in G minor, Op. 19 / Sergei Rachmanino

    Landscapes of the African American Diaspora in Denmark: An Imaginary Exhibition

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    This imaginary exhibition is based on the archive of items collected to write the book manuscript for Searching for Utopia: African Americans in 20th Century Denmark. Professor Ethelene Whitmire used the method of curatorial dreaming to design this exhibition and was influenced by African American expatriate Walter Williams’s landscape paintings that reflect the themes in the book

    The Creation and Evolution of the Acholi Ethnic Identity

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    Abstract On March 5th, 2012, the Kony 2012 video was released by the authors and director of Invisible Children, and Uganda instantaneously became the center of young America\u27s focus. This graphic video contained disturbing images of child soldiers and dead children, aiming to draw sympathy and awareness to the ongoing problem the Lord\u27s Resistance Army\u27s violent attacks on the Acholi of Northern Uganda and recruitment measures. While many Americans responded to the video\u27s urgent request for support by encouraging the government to act, others adhered to the popular belief that this conflict was nothing more than another tribal conflict among a backwards group of people. In my African history class that same week, students voiced their concern over the violent images they saw, but unconsciously, they also displayed an ignorance of the origins of such conflicts in Africa. To someone with very little knowledge of Africa\u27s history, this situation would seemingly offer an obvious solution such as the one the Kony 2012 video presented to its viewers: kill Joseph Kony and the situation will resolve itself. To Africanist, particularly those who study Uganda\u27s history, this conflict reflects issues that extend beyond the current conflict. In order to understand the origins of this conflict, people need a better understanding of the largest ethnic group affected by it, the Acholi of northern Uganda. This thesis provides a history of the Acholi that clarifies their role in Ugandan politics. The larger purpose of this thesis is to illustrate the factors that contributed to the creation and evolution of the Acholi ethnic identity and how their ethnic identity influenced their relationships with those outside of their ethnic group. The Acholi identity continuously evolved because of their interaction with other groups, as well as their inclusion into a larger socio-political institution. Through processes of negotiation, the Acholi the pre-colonial period adjusted to the changes the colonial and post-colonial periods instigated. While this thesis does not cover the present day conflict, the role the Acholi have in it becomes more evident through this study

    Parent Involvement in an Urban Head Start Classroom

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    The purpose of this study is to investigate how to build a stronger connection between home and school literacy in preschool. To do this, I interviewed parents of my students to talk about the types of activities they do at home with their child. I also wanted to find out what barriers or challenges they face in being involved with their child’s education, and how I can help support them to help overcome the challenges. In doing this, I hope to create a stronger relationship with the families, and learn more about their funds of knowledge in order to bridge the gap between home and school, and build a stronger relationship with the families I serve
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