4,842 research outputs found

    Dual-band Loop Feed with Enhanced Performance

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    This paper is aimed on specific problems of electrically small and deep dish parabolic antennas. Since these antennas may suffer with low efficiency authors describe design and optimization of simple dual-band loop prime-focus feed achieving good efficiency for these antennas

    The parabolic concentrating collector: A tutorial

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    A tutorial overview of point-focusing parabolic collectors is presented. Optical and thermal characteristics are discussed. Data representing typical achievable collector efficiencies are presented and the importance of balancing collector cost with concentrator quality is argued through the development of a figure of merit. Various types of two-axis tracking collectors are described. The Department of Energy program to develop these devices is briefly discussed, as are present and projected costs for these collectors

    What's Going on in Community Media

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    What's Going On in Community Media shines a spotlight on media practices that increase citizen participation in media production, governance, and policy. The report summarizes the findings of a nationwide scan of effective and emerging community media practices conducted by the Benton Foundation in collaboration with the Community Media and Technology Program of the University of Massachusetts, Boston. The scan includes an analysis of trends and emerging practices; comparative research; an online survey of community media practitioners; one-on-one interviews with practitioners, funders and policy makers; and the information gleaned from a series of roundtable discussions with community media practitioners in Boston, Chicago, Minneapolis/St. Paul, and Portland, Oregon

    Mixed-Initiative Interaction = Mixed Computation

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    We show that partial evaluation can be usefully viewed as a programming model for realizing mixed-initiative functionality in interactive applications. Mixed-initiative interaction between two participants is one where the parties can take turns at any time to change and steer the flow of interaction. We concentrate on the facet of mixed-initiative referred to as `unsolicited reporting' and demonstrate how out-of-turn interactions by users can be modeled by `jumping ahead' to nested dialogs (via partial evaluation). Our approach permits the view of dialog management systems in terms of their native support for staging and simplifying interactions; we characterize three different voice-based interaction technologies using this viewpoint. In particular, we show that the built-in form interpretation algorithm (FIA) in the VoiceXML dialog management architecture is actually a (well disguised) combination of an interpreter and a partial evaluator

    The Cowl - Feb 14, 2002 - Valentine\u27s Day Special Issue

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    The Cowl - student newspaper of Providence College. February 14, 2002 - Valentine\u27s Day Special Issue. 8 pages

    The Cowl - v.52- n.4 - Sep 30, 1987

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    The Cowl - student newspaper of Providence College. Volume 52, Number 4 - September 30, 1987. 20 pages

    Posterior stabilized designs in modern total knee arthroplasty: Vestigial organs

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    Clinical difference between posterior-stabilized (PS) and cruciate-retaining (CR) designs in total knee arthroplasty has remained elusive for decades. This classic debate has been given pause due to futile efforts to prove one design superior over the other. Recently, anterior-lipped and more conforming CR bearings have emerged to substitute for the posterior-cruciate ligament (PCL), if absent, damaged or resected, and obviate the need for the archaic cam-post mechanism of a traditional PS design. Advantages of avoiding a PS TKA include eliminating the risk of box cut induced femoral condylar fracture, operative efficiency by removing procedural steps, removing the articulation that is a source of wear, post deformation, breakage, or dislocation, and eliminating patellar clunk

    The Cowl - v.52 - n.18 - Apr 13, 1988

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    The Cowl - student newspaper of Providence College. Vol 52 - No. 18 - April 13, 1988. 20 pages

    Spartan Daily, November 20, 1951

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    Volume 40, Issue 39https://scholarworks.sjsu.edu/spartandaily/11626/thumbnail.jp
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