5,150 research outputs found

    Service-oriented models for audiovisual content storage

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    What are the important topics to understand if involved with storage services to hold digital audiovisual content? This report takes a look at how content is created and moves into and out of storage; the storage service value networks and architectures found now and expected in the future; what sort of data transfer is expected to and from an audiovisual archive; what transfer protocols to use; and a summary of security and interface issues

    No-Dictionary Scrabble Revisited

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    In the November 1974 Word Ways, Ralph Beaman constructed a Scrabble game scoring 5609 points, assuming that any combination of letters formed a word. Using the diagram below, Stephen Root devised a game scoring 5874 points. By rearranging Stephen Root\u27s moves, Charles F. Brown of Albuquerque raised the score two more points, to 5876

    Mine is the mourning, mine is the mourning, mine is the mourning heart [first line of chorus]

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    strophic with choruspiano and voiceDedicated to Rev. Alexander Clark290 4Johns Hopkins University, Levy Sheet Music Collection, Box 067, Item 127Written and Composed by Stephen C. Foster.Written & Composed Expressly for Clark's School Visito

    Mine is the mourning, mine is the mourning, mine is the mourning heart [first line of chorus]

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    strophic with choruspiano and voiceDedicated to Rev. Alexander Clark290 4Johns Hopkins University, Levy Sheet Music Collection, Box 067, Item 127Written and Composed by Stephen C. Foster.Written & Composed Expressly for Clark's School Visito

    Memorandum from A. E. Demaray to E. C. Finney

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    Four letters of correspondence about the purchase of Bright Angel Trail between A. E. Demaray, Acting Director of the Grand Canyon National Park; E. C. Finney, Department of the Interior First Assistant Secretary; Carl T. Hayden, Representative (AZ); and Stephen T. Mather, Director of the National Park Service

    An image of enduring plurality in economic theory: The root -metaphor theory of Stephen C Pepper

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    This dissertation establishes an image of enduring plurality in economic theory based on four stable and adequate world hypotheses identified by philosopher of science Stephen C. Pepper. According to Pepper\u27s metaphilosophy---a theory of philosophy---a world hypothesis is a conceptual system founded on a root metaphor. A root metaphor serves as a cognitive focal point or image that guides in the transformation of uncriticized, commonsense, evidence into criticized evidence and thought. A description of a world hypothesis is developed using the root-metaphor method, which derives a unique set of structural categories identified with each root metaphor. In Pepper\u27s system, four sets of structural categories define a metatheoretical taxonomy and reflect discrete manners by which theoreticians transform uncriticized, commonsense evidence into criticized evidence in an attempt to explain the world. The four world hypotheses identified by Pepper in the philosophical literature are formism, mechanism contextualism and organicism. Formism is based on the root metaphor or perceptual experience of similarity, mechanism is based on the image of the machine; contextualism. is founded on the idea of the given event; and organicism is founded on the idea of the historical process. A world hypothesis is found to be adequate if it possesses scope and precision. Each world hypothesis is autonomous and possesses a unique ontological perspective, theory of truth, interpretation of time and causality, and mode of scientific explanation. Based on Pepper\u27s root-metaphor theory, this research shows how four major theoretical perspectives or \u27schools of thought\u27 in economics correspond with the four adequate world hypothesis. Formism is associated with critical realism, which, in turn, is considered by some to be consistent with post-Keynesian economics. Mechanism is associated with neoclassical economics, Contextualism is associated with \u27old\u27 institutional economics. Organicism is associated with Mandan economics. As a result, Pepper\u27s metaphilosophical system provides a possible philosophical and pluralist account for the origins of the four major \u27schools of thought\u27 often cited in the economic literature

    Improving customer service contact root-cause analysis

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    Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2009.Includes bibliographical references (p. 50).When a customer calls or e-mails customer service, a customer service agent will diagnose the issue, render a solution, and then wrap-up the call or e-mail. For many customer service departments, this wrap-up process requires the agent to classify the reason the customer contacted customer service. Typically, this classification is done by assigning a code that describes the reason for a contact. Additionally, if a contact requires a concession, the agent will classify the reason the customer requires a concession, and select an appropriate code. These codes are used by the various business teams within the company to identify and correct failures in their processes. Therefore, these codes should drive down to the root cause for a contact or concession to allow for efficient correction. Possessing codes that do not clearly identify the root cause for a contact are of little or no use for the company. Additionally, the codes must be developed in such a way that they can be accurately chosen by either the agent or the customer. Having agents select the wrong code not only obscures the true cause for a contact, but also creates additional work due to the process involved in determining the correct code. This thesis looks at the challenges inherent in developing a list of codes that both provides clear insight into the root cause for customer contacts, and can be accurately selected by the customer service agent or the customer.by Grant Stephen Elliott.S.M.M.B.A

    Appendix I: A Conversation with Professor Stephen Frosh

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    Book synopsis: Interpretation is an integral part of all qualitative research, yet relatively little has been written about its process. In her new book, Carla Willig, author of international bestseller Introducing Qualitative Research Methods in Psychology, sheds light on the role of interpretation in qualitative research in psychology and describes the different approaches for practice. Packed with case studies, two full interview transcripts and worked examples from psychology, health sciences and the arts, Willig skilfully guides you to conduct qualitative research which is interpretative and based upon a clear rationale and interpretative position. You will also learn how to evaluate interpretative research and to acquire an understanding of what constitutes best ethical practice. Carla's transcribed conversations with Stephen Frosh, Christine Griffin and Jonathan Smith about the meaning and practice of interpretation provide a fascinating insight into the ways in which highly experienced researchers engage with the challenge of interpreting qualitative data. This book will be valuable reading for all psychology students, researchers and practitioners and a useful reference for students across the social sciences and related health disciplines

    Root growth of lupins is more sensitive to waterlogging than wheat

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    In south-west Australia, winter grown crops such as wheat and lupin often experience transient waterlogging during periods of high rainfall. Wheat is believed to be more tolerant to waterlogging than lupins, but until now no direct comparisons have been made. The effects of waterlogging on root growth and anatomy were compared in wheat (Triticum aestivum L.), narrow-leafed lupin (Lupinus angustifolius L.) and yellow lupin (Lupinus luteus L.) using 1m deep root observation chambers. Seven days of waterlogging stopped root growth in all species, except somenodal root development in wheat. Roots of both lupin species died back progressively from the tips while waterlogged. After draining the chambers, wheat root growth resumed in the apical region at a faster rate than well-drained plants, so that total root length was similar in waterlogged and well-drained plants at the end of the experiment. Root growth in yellow lupin resumed in the basal region, but was insufficient to compensate for root death during waterlogging. Narrow-leafed lupin roots did not recover; they continued to deteriorate. The survival and recovery of roots in response to waterlogging was related to anatomical features that influence internal oxygen deficiency and root hydraulic properties.Helen Bramley, Stephen D. Tyerman, David W. Turner and Neil C. Turne

    Testing for a unit root in the presence of a possible break in trend

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    In this paper we consider the issue of testing a time series for a unit root in the possible presence of a break in a linear deterministic trend at some unknown point in the series. We propose a break fraction estimator which, in the presence of a break in trend, is consistent for the true break fraction at rate Op(T^-1) when there is either a unit root or near-unit root in the stochastic component of the series. In contrast to other estimators available in the literature, when there is no break in trend, our proposed break fraction estimator converges to zero at rate Op(T^-1/2). Used in conjunction with a quasi difference (QD) detrended unit root test that incorporates a trend break regressor in the deterministic component, we show that these rates of convergence ensure that known break fraction null critical values are applicable asymptotically. Unlike available procedures in the literature this holds even if there is no break in trend (the true break fraction is zero), in which case the trend break regressor is dropped from the deterministic component and standard QD detrended unit root test critical values then apply. We also propose a second testing procedure which makes use of a formal pre-test for a trend break in the series, including a trend break regressor only where the pre-test rejects the null of no break. Both procedures ensure that the correctly sized (near-) efficient unit root test that allows (does not allow) for a break in trend is applied in the limit when a trend break does (does not) occur.Unit root test; quasi difference de-trending; trend break; pre-test; asymptotic power
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