1,256 research outputs found

    Effects of Neutron Spatial Distributions on Atomic Parity Nonconservation in Cesium

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    We have examined modifications to the nuclear weak charge due to small differences between the spatial distributions of neutrons and protons in the Cs nucleus. We derive approximate formulae to estimate the value and uncertainty of this modification based only on nuclear rms neutron and proton radii. Present uncertainties in neutron distributions in Cs are difficult to quantify, but we conclude that they should not be neglected when using atomic parity nonconservation experiments as a means to test the Standard Model.Comment: 5 pages, RevTeX, slightly revised, one figure adde

    Supersonic variable-cycle engines

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    The evolution and current status of selected recent variable cycle engine (VCE) studies are reviewed, and how the results were influenced by airplane requirements is described. Promising VCE concepts are described, their designs are simplified and the potential benefits in terms of aircraft performance are identified. This includes range, noise, emissions, and the time and effort it may require to ensure technical readiness of sufficient depth to satisfy reasonable economic, performance, and environmental constraints. A brief overview of closely related, ongoing technology programs in acoustics and exhaust emissions is also presented. Realistic technology advancements in critical areas combined with well matched aircraft and selected VCE concepts can lead to significantly improved economic and environmental performance relative to first generation SST predictions

    The Face of Bedlam: Madness, Gender, and Social Mores in Jacobean Drama

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    Spectacular images of madness and villainy characterized the Jacobean stage. Amidst the grief of losing beloved Queen Elizabeth I and the turmoil of James I\u27s early years as king, the spirit of drama shifted so that, as Una Ellis-Fermor explains, Elizabethans\u27 love of life transformed into a Jacobean preoccupation with death. Her book The Jacobean Drama: An Interpretation examines this transition, exploring Jacobean playwrights\u27 heightened dramatic presentations as social commentary. During this period, Machiavellian villains became standard on the stage; dramatic plots became overtly violent, even satanic. One of the most striking and well-studied developments during this time was the presentation of madness on the stage. John Webster\u27s The Duchess of Malfi and Thomas Middleton and William Rowley\u27s The Changeling both contain sensational depictions of madness that epitomize the Jacobean period. In the former, a group of madmen are sent to torment a prisoner; they are a wild consort that produces nothing but noise and folly ( 4.2.1; 4.2.5). Half of the latter play takes place in a madhouse where patients shout nonsense from offstage and other characters mimic their antics. The spectacle of madness onstage displays Jacobean society\u27s obsession with mental disturbance, but is not as simple as it first appears

    I couldn\u27t play with anyone that day... I\u27m so frustrated : Making Meaning Out of Frustrating Experiences in Early Childhood

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    The aim of the present study was to explore the content and sources of children’s independently narrated stories about personal experiences with frustration. Additionally, the study examined internal state language in stories that shifted to a resolution or positive emotional tone. Seventeen children (ages 46 – 61 months) attending a laboratory preschool, and twenty children (ages 65 – 78 months) attending kindergarten at a public elementary school shared stories about “a time when you were frustrated.” Stories were audio-recorded, transcribed, and coded for reports of total, unique, negative and positive emotions, cognitive states, emotional tone shift/resolution, and resolution strategies. Grounded theory methodology was used to develop coding schemes for the content and sources of children’s frustration. Children narrated experiences with frustration regarding inclusion in relationships, as well as involving instrumental, physical and natural causes. The sources of frustration included peers, siblings, parents and external forces. Stories that were resolved or shifted to a positive emotional tone included more internal state talk (emotion talk, unique emotion terms, negative emotion terms, positive emotion terms). To resolve frustrated stories, children used a variety of strategies observed in Davidson & Welliver’s (under review) research on resolving sad stories. Descriptive analysis suggested internal state talk and strategy usage varied by content and source of frustration. Results provide a foundation for studying frustration narratives in early childhood and supply new understandings of the ways young children make meaning out of frustrating experiences through emotional reminiscing

    The Impact of Movement in the Elementary Classroom

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    With the rise of virtual learning, sedentary time in the classroom is at an all-time high. Students and teachers alike are restricted in how and where they move within a school to adhere with COVID-19 safety guidelines. Despite these restrictions and time spent virtually learning, increased daily physical activity is a necessity to the developing child, as well as the adult. The purpose of this self-study was to determine the impact of movement on my teaching practices as a pre-service teacher. The participants of this study included 40 5th grade students and 38 3rd grade students who were a part of my spring student teaching practicum. During my practicum, I implemented two types of movement integration: brain breaks and academic-based movement. In addition, I recorded my own movement by tracking my steps taken within a day. Students consistently presented a positive shift in energy and on-task behaviors were increased when movement was implemented. My own teaching practices and pedagogical philosophy is now heavily influenced by purposeful movement in the academic setting, where students can receive mental breaks from assignments or can transform the environment by incorporating movements or exercise into each lesson

    1945: Captain Eckhardt Returns

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    A Study of Creative and Critical Thinking Abilities of Traditional as Compared to New Problem Solving Programs in Technology Education

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    The following hypothesis was applied to this study: 1. The research contained in this study will demonstrate that the innovative approach to problem solving in education, characteristic of the new Technology Education programs, is more effective than is traditional Industrial Arts instruction

    An investigation of the effects of urban expansion on the taxation of real property in west central Missouri

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    Digitized 2007 AES MoU.Includes bibliographical references (pages 55-56)
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