146,184 research outputs found

    [Baldwin Locomotive Works, Class 8-30-D, 738, Stock]

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    Verso: Negative No. 9660, The Baldwin Locomotive Works, Class 8-30-D, 738, Built for Stock. Construction No. 5879

    [Baldwin-Westinghouse, Diesel Electric Locomotive]

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    Verso: The Baldwin Locomotive Works, Baldwin-Westinghouse, Diesel-electric Locomotive, Class 0-4-4-0-1000/1-D

    [The Baldwin Locomotive Works, Road No. 24]

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    Verso: Negative No. 7276, The Baldwin Locomotive Works, Class 6-38-D, 111, Road No. 24, Built for The Baldwin Locomotive Work

    [Baldwin Locomotive Works Drawing Card, Sketch No. 8310]

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    This engine drawing card was created for Baldwin Locomotive Works, Class 6-32 D. Section J-6 D. Sketch 8310. Copy Spec. 36D46 (SK. mod.

    [Alexander & Baldwin Ltd., Locomotive 5, Erecting Card Drawing No. 4707]

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    Erecting card drawing for Alexander & Baldwin Ltd.This erecting drawing was created for Alexander & Baldwin Ltd. Locomotive 5, Class 08-18 D 109. Erecting Card 4707. Index Number: 673A-56. For more technical details on this drawing, see Baldwin Erecting Drawings by Road Name: http://www.smu.edu/~/media/Site/libraries/degolyer/pdfs/BLW-EDWG-RoadName.pdf and/or Baldwin Erecting Drawings by Class Number: https://www.smu.edu/~/media/Site/libraries/degolyer/pdfs/BLW-EDWG-Class.pdf (Note: Search by Index Number or Erecting Card Number)

    [Baldwin Locomotive Works, Six-Coupled Locomotive, Stock]

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    Verso: Negative No. 9227, The Baldwin Locomotive Works, Six-coupled Locomotive, Class 6-38-D, 164, Built for Stock. Construction No. 57,82

    [Baldwin Locomotive Works, 3000 H.P. Diesel Electric Locomotive]

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    This card depicts 2000 H. P. Diesel-electric locomotive, built for Seaboard Air Line Railway by Baldwin Locomotive Works.Recto: [inscribed on negative] 13120. Verso: [imprinted] Negative No. 13,120. The Baldwin Locomotive Works. 3000 H.P. Diesel-electric Locomotive. Class: 4-8-8-4, 1500/2 D

    [Baldwin Locomotive Works, 2000 H.P. Diesel Electric Locomotive]

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    Verso: Negative No. 12,890, The Baldwin Locomotive Works, 2000 H. P. Diesel-electric Locomotive, Class: 0-6-6-0, 1000/2 D

    Letter from Mary D. Baldwin to "Fannie," 22 December 1864

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    Mary "Minnie" D. Baldwin writes to "Fannie" that she is glad the holidays are so near and looks forward to joining her on "walks, rides, and other enjoyments" soon; letter is dated, "New York 1864," and labeled with filing note: "Mrs. Keith's composition, Dec 22 1864.

    Genetic Assimilation and Canalisation in the Baldwin Effect

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    The Baldwin Effect indicates that individually learned behaviours acquired during an organism’s lifetime can influence the evolutionary path taken by a population, without any direct Lamarckian transfer of traits from phenotype to genotype. Several computational studies modelling this effect have included complications that restrict its applicability. Here we present a simplified model that is used to reveal the essential mechanisms and highlight several conceptual issues that have not been clearly defined in prior literature. In particular, we suggest that canalisation and genetic assimilation, often conflated in previous studies, are separate concepts and the former is actually not required for non-heritable phenotypic variation to guide genetic variation. Additionally, learning, often considered to be essential for the Baldwin Effect, can be replaced with a more general phenotypic plasticity model. These simplifications potentially permit the Baldwin Effect to operate in much more general circumstances
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