8,768 research outputs found

    A strategic approach to assessing needs and engineering cost/performance tradeoffs for internally developed high performance assembly machines

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    Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.Includes bibliographical references (p. 87-88).by Jefferson Davis Hamilton, Jr.M.S

    On using Directional Information for Parameter Space Decomposition in Ellipse Detection

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    In this paper we use the parametric polar representation to extend the application of edge directional information from circle to ellipse extraction. As a result we obtain a mapping which decomposes the parameter space required for ellipse extraction into two independent sub-spaces and one final histogram accumulator. The mapping includes the tangent of the angle of the first and second directional derivatives. These tangents are computed by considering edge direction at two border points. We show that the use of gradient information for parameter space decomposition avoids the intensive point labelling imposed by geometric constraints used by other approaches

    Age, growth and reproduction of the roughtail skate, Bathyraja trachura (Gilbert, 1892), from the eastern North Pacific

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    "A thesis presented to the faculty of Moss landing Marine Laboratories."Thesis (M.S.) -- California State University, Monterey Bay, 2006.by Chante Davis"A thesis presented to the faculty of Moss Landing Marine Laboratories.

    Large-scale patterns in turbulent Rayleigh-Bénard convection in very large aspect ratio cells

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    Large-scale patterns, which are well-known from the spiral defect chaos regime of thermal convection at Rayleigh numbers Ra 105. They are uncovered when the turbulent fields are averaged in time and turbulent fluctuations are thus removed. We apply the Boussinesq closure to calculate turbulent viscosities and diffusivities, respectively. The resulting turbulent Rayleigh number Ra_, that describes the convection of the mean patterns, is indeed in the spiral defect chaos range. Interestingly, the turbulent Prandtl numbers are smaller than one with 0:2 _ Pr_ _ 0:4 for Prandtl numbers 0:7 _ Pr _ 10. Finally, we demonstrate that these mean flow patterns are robust to an additional finite-amplitude side wall-forcing when the level of turbulent fluctuations in the flow is sufficiently high

    Vital Records of Lebanon, Maine, To the Year 1892 - Volume I - Births

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    Records of Lebanon, Maine, To the Year 1892 - Volume I - Births George Walter Chamberlain, M.S., Editor; William Davis Patterson & Alfred Johnson, Committee on Publication. Published Under Authority of the Maine Historical Society, 1922. Wright & Potter Printing Company, 32 Derne Street, Boston, Mass. Lebanon Births To the Year 1892.https://digitalcommons.usm.maine.edu/me_collection/1141/thumbnail.jp

    Reynolds number effect on 3D turbulent offset jet reattaching to a free surface

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    Experimental study was carried out to investigate the effect of Reynolds number on 3D offset jet reattaching to above free surface. Sharp edged square nozzle was used to produce the jets, and the measurements were performed at the following six different Reynolds numbers: 2300, 3700, 5100, 7900, 10300 and 11900. Detailed velocity measurements were made in the symmetry plane. From the PIV data, the mean velocity and turbulence statistics were obtained to study the effects of Reynolds number on the salient features of the jet flow. Preliminary results on streamwise mean velocity decay along the nozzle centerline, contours of streamwise mean velocity and Reynolds shear stress are presented herein

    Geneva-Davis Mine, "blowing out" cars

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    Date scanned: 2002-6-26.O-210; 'Blowing out' cars - using compressed air. (Note miner wearing face shield and hood over car exhausting dust. Geneva-Davis mine, Oliver Iron Mining Co., Ironwood, Mich. (Gogebic district) - M.S. Petersen - August 1945.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.A miner blows out an ore car underground at the Geneva-Davis Mine. The Geneva-Davis Mine (Geneva Mine) was an underground iron mine in the Gogebic district near Bessemer, Michigan. The Mine opened in 1887. It was operated by the Oliver Iron Mining Company before its closure in 1966. The Oliver Iron Mining Company was organized in 1892, and acquired many mineral properties in the northern iron ranges. By 1901 the Company was a division of United States Steel Corporation

    Geneva-Davis Mine, lorry car

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    Date scanned: 2002-6-26.O-205; Lorry car, 10-ton operated by remote control. Geneva-Davis mine, Oliver Iron Mining Co., Ironwood, Mich. (Gogebic District) - M.S. Petersen - August 1945.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.The Geneva-Davis Mine (Geneva Mine) was an underground iron mine in the Gogebic district near Bessemer, Michigan. The Mine opened in 1887. It was operated by the Oliver Iron Mining Company before its closure in 1966. The Oliver Iron Mining Company was organized in 1892, and acquired many mineral properties in the northern iron ranges. By 1901 the Company was a division of United States Steel Corporation

    The Benefits of Being Economics Professor A (and not Z)

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    Alphabetic name ordering on multi-authored academic papers, which is the convention in the economics discipline and various other disciplines, is to the advantage of people whose last name initials are placed early in the alphabet. As it turns out, Professor A, who has been a first author more often than Professor Z, will have published more articles and experienced afaster growth rate over the course of her career as a result of reputation and visibility. Moreover, authors know that name ordering matters and indeed take ordering seriously: Several characteristics of an author group composition determine the decision to deviate from the default alphabetic name order to a significant extent.performance measurement, incentives, economists, name ordering

    Mentoring : in search of a taxonomy

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    Thesis. 1979. M.S.--Massachusetts Institute of Technology. Alfred P. Sloan School of Management.MICROFICHE COPY AVAILABLE IN ARCHIVES AND DEWEY.Bibliography: leaf 104.by Robert L. Davis, Jr. and Patricia A. Garrison.M.S
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