9,674 research outputs found

    Efficient experimental design for the Behrens-Fisher problem with application to bioassay

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    A common approach in the design of experiment for the problem of comparing two means from a normal distribution is to assume knowledge of the ratio of the population variances. The optimal sampling ratio is proportional to the square root of this quantity. In this paper it is demonstrated that a misspecification of this ratio can cause a substantial loss in power of the corresponding tests. As a robust alternative a maximin approach is used to construct designs, which are efficient, whenever the experimenter is able to specify a specific region for the ratio of the population variances. The advantages of the robust designs for inference in the Behrens-Fisher problem are illustrated by means of a simulation study and an application to the design of experiment for bioassay is presented. --Behrens-Fisher problem,bioassay,design of experiment,local optimal design,robust designs

    B. Lyn Behrens Memorial Plaque

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    On the plaque is inscribed: "B. Lyn Behrens, SM Dean, 1986-1991."10 x 15 c

    Turbinen Fabrik A.E.G

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    One of [Behrens] earliest designs was for the celebrated turbine factory (1909; see Modern movement, fig. 1; see Buddensieg and others, 1984, pp. 273–81) in Moabit, Berlin, which used an exposed hinged steel frame—designed with Karl Bernhard (b 1859)—and undecorated masonry cladding on the gable end to create one of the canonical statements of 20th-century architecture, in which transparency and the rhythms of the industrial process were combined with classical monumentality.exterior, top left: side facing Berlichingenstrasse; top right: detail of pilaster resting on its hinge; bottom right: internal wall with alternation between the window and pilaster; bottom left: detail of ground floor pilaster facing the yar

    An experimental study on the pressure dependence of viscosity in silicate melts

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    The effect of pressure on melt viscosity was investigated for five compositions along the join An(CaAl2Si2O8)–Di(CaMgSi2O6) and four alkali silicates containing lithium, sodium, and potassium in constant ratio of ∼ 1:1:1, but alkali-silica ratios are varying. The experiments were performed in an internally heated gas pressure vessel at pressures from 50 to 400 MPa in the viscosity range from 108 to 1011.5 Pa⋅s using parallel plate viscometry. The polymerized An composition shows a negative pressure dependence of viscosity while the other, more depolymerized compositions of the join An–Di have neutral to positive pressure coefficients. The alkali silicates display neutral to slightly positive pressure coefficients for melt viscosity. These findings in the high viscosity range of 108–1011 Pa⋅s, where pressure appears to be more efficient than in low viscous melts at high temperature, are consistent with previous results on the viscosity of polymerized to depolymerized melts in the system NaAlSi3O8–CaMgSi2O6 by Behrens and Schulze [ H. Behrens and F. Schulze, Am. Mineral. 88, 1351 (2003) ]. Thus we confirm that the sign of the pressure coefficient for viscosity is mainly related to the degree of melt polymerization in silicate and aluminosilicate melts.DFG Grant n.°BE1720/9Published044504-142.3. TTC - Laboratori di chimica e fisica delle rocceJCR Journalope

    Letter

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    Digital copies were created from a selection of items in the original hard copy Albert Coates collection (PDV 4) held in DOMUS in the Stellenbosch University Music Library.Correspondence with Vera de Villiers [Vera Coates]. Letter from Richard Behrens, University of Stellenbosch. Confirmation of items sent for concert performance

    Dr. Lyn Behrens, President

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    B. Lyn Behrens, MBBS, was Dean of the School of Medicine from 1986 to 1991; Interim Dean from 1993 to 1994, President of Loma Linda University from 1990 to 2001; and President of Loma Linda University Medical Center from 1999 to 2008. In 1995, she was appointed President of Adventist Health Systems/Loma Linda (AHS/LL). And in 1997, she became president and CEO of Loma Linda University Adventist Health Sciences Center (LLUAHSC), the successor corporation of AHS/LL and the new umbrella organization for Loma Linda University and Loma Linda University Medical Center. She served as president of Loma Linda University Behavioral Medicine Center from 1999 to 2004. In 2008, Dr. Behrens was named President Emerita of LLUAHSC (now Loma Linda University Health).12.5 x 18 c

    Mond van het Haringvliet

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    Er is onderzoek gedaan naar de sedimentbeweging ten gevolge van golven en getijstromen voor de mond van het Haringvliet. Het vooronderzoek is alleen gedaan door A Zwols; "Een onderzoek naar de invloed van golven op de mond van het Haringenvliet". Behrens heeft ook een eigen vooronderzoek gedaan over spiraalstromen, maar deze is los upgeload bij de repository.Hydraulic EngineeringCivil Engineering and Geoscience

    Writing Now, Reading Now: Peter Behrens

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    Peter Behrens's novel "The Law of Dreams" won the Governor-General's Award, Canada's most prestigious book prize. He's the author of a second novel, "The O'Briens," and the story collection "Nightdriving." His fiction and nonfiction have appeared in The Atlantic Monthly, Tin House, Brick, Best Canadian Stories and many anthologies. He is the Fall 2013 Wichita State Visiting Distinguished Fiction Writer
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