325,320 research outputs found

    Togoperla noncoloris Du & Chou 1999

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    Togoperla noncoloris Du & Chou Togoperla noncoloris Du & Chou, 1999:3. Holotype ♂ (Zhejiang University), Jinxiu, Guangxi, China Remarks. We have seen no material of this species, but it appears distinctive by virtue of its pale wing pigmentation. The hemitergal lobes are short, the basolateral lobes of the aedeagal tube are small and bare, and the dorsoapical spine patch is fused mesally (Du & Chou 1999).Published as part of Stark, Bill P. & Sivec, Ignac, 2008, The Genus Togoperla Klapálek (Plecoptera: Perlidae), pp. 208-225 in Illiesia 4 (20) on page 215, DOI: 10.5281/zenodo.475484

    A Smart Healthcare Kit for Home Healthcare

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    Author Contributions: Writing—original draft preparation, Chun-Yang Chou, and Chun-Hung Chou; writing—review and editing, Chun-Yang Chou, Ding-Yang Hsu and Chun-Hung Chou All authors have read and agreed to the published version of the manuscript.</p

    A general framework for constructing and analyzing mixed finite volume methods on quadrilateral grids: The overlapping covolume case

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    We present a general framework for constructing and analyzing finite volume methods applied to the mixed formulation of second-order elliptic problems on quadrilateral grids. The control volumes, or covolumes, in the grids overlap. An overlapping finite volume method of this type was first introduced by Russell in [T. F. Russell, Tech. report 3, Reservoir Simulation Research Corp., Tulsa, OK, 1995] and was tested for a variety of problems on rectangular and quadrilateral grids in [Z. Cai et al., Comput Geosci., 1 (1997), pp. 289-315]. Later in [S. H. Chou and D. Y. Kwak, SIAM J. Numer. Anal., 37 (2000), pp. 758-771], Chou and Kwak reformulated it as their mixed covolume method and proved optimal order error estimates using the covolume methodology from [S. H. Chou, Math. Comp., 66 (1997), pp. 85-104] and [S. H. Chou and D. Y. Kwak, SIAM J. Numer. Anal., 35 (1998), pp. 494-507]. However, their treatment was restricted to the case of diagonal coefficient tensor and rectangular grids since a different approach was needed for the quadrilateral (distorted rectangular) case. In this paper we give a new framework, which can handle not only the rectangular anisotropic case but also the anisotropic and irregular grid cases in which the locally supported test functions are images of the natural unit coordinate vectors under the Piola transformation. Our theory sheds light on how to create new test functions using quadratures and now covers Russell&apos;s quadrilateral case
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