673 research outputs found

    S band omnidirectional antenna

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    Issued as Proposed work plan, Monthly technical progress report no. 1-7, and Final report, Project no. A-165

    Antenna pattern analysis for target vehicles

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    Issued as Monthly technical progress report no. 1-5, and Final report, Project no. A-178

    Too many cooks?: changing wages and job ladders in the food industry

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    Consolidation and outsourcing in the food industry have created higher-paying food prep jobs, but also have erected barriers for lower-skilled workers trying to move up the ladder.Food industry and trade

    Development of a stereo 3-D pictorial primary flight display

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    Computer-generated displays are becoming increasingly popular in aerospace applications. The use of stereo 3-D technology provides an opportunity to present depth perceptions which otherwise might be lacking. In addition, the third dimension could also be used as an additional dimension along which information can be encoded. Historically, the stereo 3-D displays have been used in entertainment, in experimental facilities, and in the handling of hazardous waste. In the last example, the source of the stereo images generally has been remotely controlled television camera pairs. The development of a stereo 3-D pictorial primary flight display used in a flight simulation environment is described. The applicability of stereo 3-D displays for aerospace crew stations to meet the anticipated needs for 2000 to 2020 time frame is investigated. Although, the actual equipment that could be used in an aerospace vehicle is not currently available, the lab research is necessary to determine where stereo 3-D enhances the display of information and how the displays should be formatted

    Parametric investigation of radome analysis methods

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    Issued as Annual technical report, and Final technical reports v. 1-4, Project no. E-21-605, and Engineering Experiment Station project no. B-494-004 (continues School of Electrical Engineering projects nos. E-21-612 and E-21-636 and Engineering Experiment Station projects nos. B-494-000/001/002/003

    Way Down in Birmingham / music by Harold Dixon; words by Erwin F. and Jacob L. Kleine

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    Cover: drawing of a Caucasian male boarding a train, as an African American male loads his luggage; Publisher: Dixon-Lane Pub. Co. (Chicago)https://egrove.olemiss.edu/sharris_c/1164/thumbnail.jp

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    http://archive.org/details/performanceindic00prigNAN

    The northern Hikurangi margin three-dimensional plate interface in New Zealand remains rough 100 km from the trench

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    At the northern Hikurangi margin (North Island, New Zealand), shallow slow slip events (SSEs) frequently accommodate subduction-interface plate motion from landward of the trench to <20 km depth. SSEs may be spatially related to geometrical interface heterogeneity, though kilometer-scale plate-interface roughness imaged by active-source seismic methods is only constrained offshore at <12 km depth. Onshore constraints are comparatively lacking, but we mapped the Hikurangi margin plate interface using receiver functions from data collected by a dense 22 × 10 km array of 49 broadband seismometers. The plate interface manifests as a positive-amplitude conversion (velocity increase with depth) dipping west from 10 to 17 km depth. This interface corroborates relocated earthquake hypocenters, seismic velocity models, and downdip extrapolation of depth-converted two-dimensional active-source lines. Our mapped plate interface has kilometer-amplitude roughness we interpret as oceanic volcanics or seamounts, and is 1–4 km shallower than the regional-scale plate-interface model used in geodetic inversions. Slip during SSEs may thus have different magnitudes and/or distributions than previously thought. We show interface roughness also leads to shear-strength variability, where slip may nucleate in locally weak areas and propagate across areas of low shear-strength gradient. Heterogeneous shear strength throughout the depth range of the northern Hikurangi margin may govern the nature of plate deformation, including the localization of both slow slip and hazardous earthquakes
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