1,036 research outputs found

    Concept definition study for recovery of tumbling satellites. Volume 1: Executive summary, study results

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    The first assessment is made of the design requirements and conceptual definition of a front end kit to be transported on the currently defined Orbital Maneuvering Vehicle (OMV) and the Space Transportation System Shuttle Orbiter, to conduct remote, teleoperated recovery of disabled and noncontrollable, tumbling satellites. Previous studies did not quantify the dynamic characteristics of a tumbling satellite, nor did they appear to address the full spectrum of Tumbling Satellite Recovery systems requirements. Both of these aspects are investigated with useful results

    Concept definition study for recovery of tumbling satellites. Volume 2: Supporting research and technology report

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    A number of areas of research and laboratory experiments were identified which could lead to development of a cost efficient remote, disable satellite recovery system. Estimates were planned of disabled satellite motion. A concept is defined as a Tumbling Satellite Recovery kit which includes a modular system, composed of a number of subsystem mechanisms that can be readily integrated into varying combinations. This would enable the user to quickly configure a tailored remote, disabled satellite recovery kit to meet a broad spectrum of potential scenarios. The capability was determined of U.S. Earth based satellite tracking facilities to adequately determine the orientation and motion rates of disabled satellites

    The Rise and Fall of South Carolina College

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    Through a thorough examination of the underpinnings of Classical education, as well as the history of South Carolina College, it is clear that the classical system is superior to the later University system imposed upon the College during the Reconstruction period. Classical education began in the Greek philosophic schools, such as the Academy and the Lyceum, and was intended to enrich the soul of its students, as well as to equip them for leadership in the future. But the most important aspect of this education was its universality. It is highly ironic that the original concept of the University began with a hope for universality as well. After all, the very meaning of the word University reflects this high purpose. However, by the late nineteenth century, the University model had become polluted, and was used to promote skills-based learning, as opposed to the universal model it originally represented. When South Carolina College was forced to embrace the new system of specialized education, its set curriculum vanished, and its reputation vanished along with it

    Role of Esrrg in the Fibrate-Mediated Regulation of Lipid Metabolism Genes in Human ApoA-I Transgenic Mice

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    We have used a new ApoA-I transgenic mouse model to identify by global gene expression profiling, candidate genes that affect lipid and lipoprotein metabolism in response to fenofibrate treatment. Multilevel bioinformatical analysis and stringent selection criteria (2-fold change, 0% false discovery rate) identified 267 significantly changed genes involved in several molecular pathways. The fenofibrate-treated group did not have significantly altered levels of hepatic human APOA-I mRNA and plasma ApoA-I compared with the control group. However, the treatment increased cholesterol levels to 1.95-fold mainly due to the increase in high-density lipoprotein (HDL) cholesterol. The observed changes in HDL are associated with the upregulation of genes involved in phospholipid biosynthesis and lipid hydrolysis, as well as phospholipid transfer protein. Significant upregulation was observed in genes involved in fatty acid transport and β-oxidation, but not in those of fatty acid and cholesterol biosynthesis, Krebs cycle and gluconeogenesis. Fenofibrate changed significantly the expression of seven transcription factors. The estrogen receptor-related gamma gene was upregulated 2.36-fold and had a significant positive correlation with genes of lipid and lipoprotein metabolism and mitochondrial functions, indicating an important role of this orphan receptor in mediating the fenofibrate-induced activation of a specific subset of its target genes.National Institutes of Health (HL48739 and HL68216); European Union (LSHM-CT-2006-0376331, LSHG-CT-2006-037277); the Biomedical Research Foundation of the Academy of Athens; the Hellenic Cardiological Society; the John F Kostopoulos Foundatio

    Technology in Public Health Higher Education

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    © 2018 APJPH. Streamed and recorded lectures as well as audience response technology are increasingly used in public health tertiary education, to train practitioners to address Asia-Pacific region’s rapidly changing health needs. However, little is known about the impact on student performance, satisfaction, and understanding. This study aimed to assess postgraduate students’ perceptions and their use of technology in a large epidemiology subject at an Australian university in internal and external modes. The study used both routinely collected student data (n = 453) and survey data (n = 88). Results indicate that students accept and use technology-based learning tools, and perceive audience response technology as well as streamed and recorded lectures as useful for their learning (96.6%). Students have shown a preference to review recorded lectures rather than viewing streamed lectures. Analyses further suggest that the use of recorded and streamed lectures may be linked to better student performance for external students (passing, any use odds ratio = 3.32). However, these effects are not consistent across all student subgroups and externally enrolled students may profit more than those enrolled internally

    20th Annual AVETRA Annual Conference: Renovate or Rebuild?: Exploring the Architecture of VET

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    The knowledge economy is compelling business leaders to adopt creative approaches to become and remain relevant and competitive. Business has the opportunity to use many of the learnings from art and philosophy in order to effectively respond to this situation. This article takes insights from creative artists and thinkers such as Dante, Yeats, Chomsky and TS Eliot and connects them with contemporary developments in professional learning, practice and reflection (with particular reference to the work of Hager et al., (2012) Kemmis et al., (2012) and Boud et al., (2006). The purpose of these connections is to illustrate the value of an emergent approach to tertiary education known as work based learning. The article is a departure from traditional views of work-based learning as it suggests that work based learning is a creative and innovative response that builds capability for both individuals and organisations. Within this context, significance is afforded through reflective practice. Whilst reflection is more associated with thinkers and artists than business leaders, it is an important skill in contemporary business settings. The authors argue that effective professional reflective practice draws the different elements of contemporary work based learning into a cohesive strategy for building higher levels of individual and organisational capability

    AVETRA Annual Conference

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    This paper sets out just one element of a long term project in which the authors have employed elements of activity theory and expansive learning theory to analyse both the Australian Qualifications Framework (AQF: 2013) and application of contemporary workbased learning approaches. The framework for the review is built around 6 key areas of performance identified in previous reviews of education systems and qualifications frameworks (AQF Council 2009; Bradley et al., 2008; Burke et al., 2009; CEDEFOP 2010 & 2013; CEDEFOP & ETF 2013; Commonwealth of Australia 2009; deWeert 2011; Education and Culture DG & EQF 2013; Guthrie et al., 2011; Hackett et al., 2012). The researchers are progressively working through the sequence of learning actions within an expansive learning cycle (Engestrom & Kerosuo, 2007) and this paper represents one aspect of the work being undertaken as part of a step two [i.e. analysis] in the seven step expansive learning cycle. Through this analysis we present a possible solution to enable an individual to progress through a vocational pathway into higher education by the application of a workbased learning pedagogy that is assessed against institutional based credentials. This approach tends to be a ‘flipped’ practice to the general principle of asking the learner to align their work based activity to the institution’s pedagogical framework and more then the application of recognition of prior learning

    Containing, embracing and hyper-activating Britishness: British-based foreign-owned firms

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    There are in the UK ownership forms different to the characteristics of Britishness – British-based foreign-owned firms where dominant owners may have differentiated control interests. These may contain, that is, override, national institutional characteristics embedded in a particular national capitalism. Accordingly, separating the agency of these firms from presumed business system structures may reveal how diverse patterns of firm ownership – those associated with British-based foreign-owned firms – can inform dynamic ownership developments in British capitalism which contain and hyper-activate Britishness. The article theorizes British-based foreign-owned firms and provides empirical detail on how ownership characteristics influence financial commitment and strategic control in 10 of these firms

    Span of control in supervision of rail track work

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    The supervision of engineering work on the railways has received relatively little examination despite being both safety-critical in its own right and having wider implications for the successful running of the railways. The present paper is concerned with understanding the factors that make different engineering works perceived as easier or harder to manage. We describe an approach building on notions of ‘span of control’, through which we developed the TOECAP inventory (Team, Organisation, Environment, Communication, Activity and Personal). This tool was validated through both interviews and questionnaires. As well as identifying the physical factors involved, the work also emphasised the importance of collaborative and attitudinal factors. We conclude by discussing limitations of the present work and future directions for development
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