783,112 research outputs found

    Using the attention cascade model to computationally account for the age differences in an Attentional Blink (AB) task

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    The attention cascade model (Shih, 2008) is a general, mathematical model of attention and working memory. It is applied here to characterize cognitive aging

    Protaenionema Liu and Shih

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    Genus Protaenionema Liu and Shih, gen. nov. Type species. Protaenionema fuscalatus Liu and Shih, sp. nov. Etymology. Named from a combination of the prefix pro- and Taenionema. Species included. Only the type species P. fuscalatus Liu and Shih, sp. nov. Diagnosis. Wings of normal length, brown. Lack of additional veinlets on the costal area, crossvein c–r absent; Rs and M both with two branches. Ninth sternite produced, distinctly exceeds the tenth segment, not upturned, and the distal margin rounded, tenth tergite transversely wide, sclerotized. Cerci short, multisegmented. Remarks. In the extant genera, c–r is generally present, absent only in Brachyptera and in the glacialis and contorta group of Oemopteryx (Ricker & Ross 1975). Crossvein c–r is absent in this new genus Protaenionema. It is difficult to distinguish this new genus and extant genus Brachyptera and the glacialis and contorta group of Oemopteryx according to the preserved characters of Protaenionema. Brachyptera has developed extra branches (three to five branches) of CuA and cerci with one or two segments, but these important characters are not preserved clearly in Protaenionema; similarly, the typical features (two prongs) of epiproct of Oemopteryx cannot be observed in Protaenionema. The new extinct genus Protaenionema differs from the extinct Gurvanopteryx and Positopteryx by the opaque, slightly brown wings and by the distinctly produced ninth sternite. It differs from the new Jurataenionema by having an Rs with two branches and the fuscous wings.Published as part of Liu, Yushuang, Sinitshenkova, Dong Ren Nina D. & Shih, Chung Kun, 2007, The oldest known record of Taeniopterygidae in the Middle Jurassic of Daohugou, Inner Mongolia, China (Insecta: Plecoptera), pp. 1-8 in Zootaxa 1521 on pages 4-5, DOI: 10.5281/zenodo.17745

    Letter dated 2 September 1914 from Shih Fu Tang to Mrs Wagner, translated by an American missionary

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    Letter dated 2 September 1914 from Shih Fu Tang, a Chinese girl at Lintsing, to Mrs Wagner (perhaps Mrs. Vincent E. Wagner), translated by an American missionary, perhaps Dr Susan B. Tallmo

    [Handwritten list of names by an unknown author #1]

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    Handwritten note by an unknown author, listing various names

    Letter dated 5 June 1930 from Shih Fu Tang to American friends

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    Letter dated 5 June 1930 from Shih Fu Tang, Superintendent of Evangelistic Work at Lintsing, China, to American friends; this letter was sent in an envelope addressed to Edith (Tallmon) Park at Morgan Hill, Californi
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