2,972 research outputs found

    Community-Based Heritage Education, Training and Research : Preliminary Report On The Tungatsivvik Archaeological Project

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    Despite an immediate need for northerners trained in cultural resource management and the strong desire of many northern communities to direct historical research, there continue to be few opportunities for students to receive formal training in heritage research. A promising new approach is the Tungatsivvik Archaeological Project, which since 1991 has been part of the Environmental Technology Program offered through Arctic College's Nunatta Campus in cooperation with the community of Iqaluit. Integrating lectures, field exercises, lab analyses, and community reporting, the program allows students and community members alike to acquire technical knowledge and skills they can use to develop community-based heritage programs. The more than 100 features identified at the site, where excavations in the first two seasons have yielded more than 2000 artifacts and 7000 animal bones, include late prehistoric (Thule culture) dwellings, food caches, kayak stands, and burials. Results of the project are being actively integrated into local educational and interpretative structures, as community members from elders to school children participate in "making history come alive."Key words: Baffin Island, archaeology, Arctic College, community-based research, cultural resource management, heritage training, NunavutMalgré le manque actuel de résidents du Grand Nord formés en gestion des ressources culturelles et le désir très fort de nombreuses communautés nordiques de diriger la recherche historique, il y a toujours peu d'occasions pour des étudiants de recevoir une formation formelle en recherche sur le patrimoine. Le projet archéologique de Tungatsivvik représente une nouvelle approche prometteuse. Il a fait partie du programme de technologie de l'environnement offert depuis 1991 par le campus Nunatta de l'Arctic College, en coopération avec la communauté d'Iqaluit. Le programme intègre cours, exercices sur le terrain, analyses en laboratoire et reportages communautaires, et permet aux étudiants, ainsi qu'aux membres de la communauté, d'acquérir des connaissances et des habiletés techniques qu'ils peuvent utiliser pour mettre au point des programmes sur le patrimoine d'inspiration communautaire. Parmi les plus de cent caractéristiques identifiées sur le site où les deux premières saisons d'excavation ont livré plus de 2000 artefacts et 7000 os d'animaux, on retrouve des logements datant de juste avant la période historique (culture Thulé), des caches de nourriture, des supports de kayak et des sites d'enterrement. Les résultats du projet sont en cours d'intégration dans les structures d'éducation et d'interprétation locales, alors que des membres de la communauté, allant des anciens aux écoliers, participent au projet de «faire revivre l'histoire».Mots clés: Île Baffin, archéologie, Arctic College, recherche d’inspiration communautaire, gestion des ressources culturelles, formation en patrimoine, Nunavu

    Coronary Evaluation Using Multi-detector Spiral Computed Tomography Angiography: Statistical Design and Analysis

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    Contrast-enhanced multi-detector row spiral computed tomography (MDCT) has been introduced as a method for non-invasive visualization of coronary artery stenosis. To determine the diagnostic accuracy of MDCT coronary angiography, as compared to the “gold standard” invasive coronary angiography, sensitivity and specificity are estimated (95% Confidence Intervals). Three separate levels of estimation are computed: at the patient level, at the coronary artery level, and at the coronary artery segment level. We review the methodology for the estimation of sensitivity and specificity of non-clustered binary data (patient level analysis) and present a methodology for the estimation of sensitivity and specificity that considers the patient as a cluster and the coronary arteries (or coronary artery segments) as the diagnostic units of the study (DUOS) within each cluster. We also present how to estimate the weighted kappa for the comparison of ordinal measures of stenosis when non-clustered and clustered data are considered and the mean difference for the comparison of continuous measures of stenosis when non-clustered and clustered data are considered. Finally, we present a methods for determining the statistical precision of estimates sensitivity and specificity, weighted kappa and mean difference when clustered data are considered

    MORAL MATURATION AND MORAL CONATION: A CAPACITY APPROACH TO EXPLAINING MORAL THOUGHT AND ACTION

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    We set out to address a gap in the management literature by proposing a framework specifying the component capacities organizational actors require to think and act morally. We examine how moral maturation (i.e., moral identity, complexity, and metacognitive ability) and moral conation (i.e., moral courage, efficacy, and owner- ship) enhance an individual\u27s moral cognition and propensity to take ethical action. We offer propositions to guide future research and discuss the implications of the proposed model for management theory an

    Determining Damping Trends from a Range of Cable Harness Assemblies on a Launch Vehicle Panel from Test Measurements

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    The team of authors at Marshall Space Flight Center (MSFC) has been investigating estimating techniques for the vibration response of launch vehicle panels excited by acoustics and/or aero-fluctuating pressures. Validation of the approaches used to estimate these environments based on ground tests of flight like hardware is of major importance to new vehicle programs. The team at MSFC has recently expanded upon the first series of ground test cases completed in December 2010. The follow on tests recently completed are intended to illustrate differences in damping that might be expected when cable harnesses are added to the configurations under test. This validation study examines the effect on vibroacoustic response resulting from the installation of cable bundles on a curved orthogrid panel. Of interest is the level of damping provided by the installation of the cable bundles and whether this damping could be potentially leveraged in launch vehicle design. The results of this test are compared with baseline acoustic response tests without cables. Damping estimates from the measured response data are made using a new software tool that employs a finite element model (FEM) of the panel in conjunction with advanced optimization techniques. This paper will report on the \damping trend differences. observed from response measurements for several different configurations of cable harnesses. The data should assist vibroacoustics engineers to make more informed damping assumptions when calculating vibration response estimates when using model based analysis approach. Achieving conservative estimates that have more flight like accuracy is desired. The paper may also assist analysts in determining how ground test data may relate to expected flight response levels. Empirical response estimates may also need to be adjusted if the measured response used as an input to the study came from a test article without flight like cable harnesses

    Value of Speed in Public Transit Services

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    High speed is always a desirable feature of public transportation services. Any measure that increases public transport speeds results in benefits to users in tenns of saved travel time, and benefits to the operator in reduced operating costs and in eventual reduction of fleet size. At the same time, it is known that some major efforts for increasing speeds, often involving considerable cost (such as increasing maximum technical speed of vehicles) result in relatively small increases in average passenger travel speed. This problem is common for a number of different modes of transportation. An excellent example can be found in air transporta­tion; increases of aircraft cruising speed are costly and have relatively little impact on the passenger average travel speeds, particularly for short-and medium-haul trips. The same problem is observed with both rapid and surface transit in urban areas. In order to derive more specific results applicable in practice, this research is limited to the latter transportation systems: public transportation in urban areas

    Corporate Bankruptcy Panel--The Fraudulent Conveyance Origins of Chapter 11: An Essay on the Unwritten Law of Corporate Reorganizations

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    The second panel was the Corporate Panel, led by Professor Douglas Baird from the University of Chicago Law School. We were fortunate enough to have the impressive Sarah R. Borders act as the moderator of this panel. The discussion, however, did not require much moderating; the panelists were familiar with one another and the discussion was entertaining. The panel was divided into two schools of thought: those who felt like the Code solely governed the practice of corporate bankruptcy, and those who felt like there was a set of unwritten rules created over the last 150 years that pulled the strings

    Unlocking the mask: A look at the process by which authentic leaders impact follower attitudes and behaviors

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    The conceptual and empirical links between authentic leadership and follower attitudes, behaviors, and performance outcomes have not been fully developed. Although we have a number of articles developing the theory of authentic leadership and testing propositions that will appear in a forthcoming special issue of The Leadership Quarterly (Vol. 16, Issue 3, 2005), the focus of this article is to provide some of the initial foundation work for the broader theoretical framework of how authentic leaders influence follower attitudes, behaviors, and performance. Here, we draw from positive organizational behavior, trust, hope, emotion, identification, and identity theories to describe the processes by which authentic leaders exert their influence on followers’ attitudes and behaviors. Research propositions based on the proposed theoretical model and implications for future theory building and research are presented

    Plasma-Based Detector of Outer-Space Dust Particles

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    A report presents a concept for an instrument to be flown in outer space, where it would detect dust particles - especially those associated with comets. The instrument would include a flat plate that would intercept the dust particles. The anticipated spacecraft/dust-particle relative speeds are so high that the impingement of a dust particle on the plate would generate a plasma cloud. Simple electric dipole sensors located equidistantly along the circumference of the plate would detect the dust particle indirectly by detecting the plasma cloud. The location of the dust hit could be estimated from the timing of the detection pulses of the different dipoles. The mass and composition of the dust particle could be estimated from the shapes and durations of the pulses from the dipoles. In comparison with other instruments for detecting hypervelocity dust particles, the proposed instrument offers advantages of robustness, large collection area, and simplicity

    “Can you see the real me?” A self-based model of authentic leader and follower development

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    To address present and future leadership needs, a model of authentic leader and follower development is proposed and examined with respect to its relationship to veritable, sustainable follower performance. The developmental processes of leader and follower self-awareness and self-regulation are emphasized. The influence of the leader’s and followers’ personal histories and trigger events are considered as antecedents of authentic leadership and followership, as well as the reciprocal effects with an inclusive, ethical, caring and strength-based organizational climate. Positive modeling is viewed as a primary means whereby leaders develop authentic followers. Posited outcomes of authentic leader–follower relationships include heightened levels of follower trust in the leader, engagement, workplace well-being and veritable, sustainable performance. Testable propositions and directions for exploring them are presented and discussed
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