1,155 research outputs found
Efficient experimental design for the Behrens-Fisher problem with application to bioassay
No full textA 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
Mond van het Haringvliet
No full textEr 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
No full textPeter 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
Author Correction: the BrainLat project, a multimodal neuroimaging dataset of neurodegeneration from underrepresented backgrounds
No full textIn this article the author name Maria Isabel Behrens was incorrectly written as Maria Isabel Beherens. The original article has been corrected.Versión Publicad
How Camouflage Works: the Dazzling Past and Future of Natural and Military Camouflage [poster, 2017]
No full textAlt Text: Poster with foreground image of a woman holding a parasol wearing black and white striped clothing. Additional images of a brown moth and a ship painted in black and white stripes. A blue text block with white and yellow letters below the images.
Transcription: A richly illustrated talk by author, designer and UNI professor. Roy R. Behrens. 2:00 pm Sunday, May 21, 2017. How Camouflage Works. The Dazzling Past and Future of Natural and Military Camouflage. Lewis and Clark Interpretive Center. 900 Larsen Park Road. Sioux City, IA. Exit 149 off I-29. Admission and programs are free. Program content is suitable for all ages. http://www.siouxcitylcic.com/.
Description: A poster announcing a presentation on camouflage, both natural and military, given by Roy R Behrens in Sioux City in May 2017.https://scholarworks.uni.edu/behrens_posters/1160/thumbnail.jp
Frank Lloyd Wright and Mason City [poster 08, 2017]
No full textAlt Text: Poster with a headshot of Frank Lloyd Wright in the background with an gray netting design on the right side of the head and shoulders. Tan image of four rows of beads in a half circle. Text in white letters.
Transcription: Frank Lloyd Wright. Mason City and Book Design. A 60-minute slide talk by Prof. Roy R. Behrens author of Frank Lloyd Wright and Mason City: Architectural Heart of the Prairie. Mason City Public Library. 6:00 pm, Tuesday, April 11, 2017. In the Mason City Room. Free and Open to the Public. National Library Week.
Description: Poster announcing a presentation by Roy R. Behrens on Frank Lloyd Wright, Mason City and book design on April 11, 2017.https://scholarworks.uni.edu/behrens_posters/1145/thumbnail.jp
Behrens’ narrative of the discovery of Easter Island:Two editions, two personalities, two realities
No full textThis article is dedicated to the figure of Carl Friedich Behrens, a member of the Dutch expedition led by Jacob Roggeveen, who re-discovered Easter Island in 1722. Behrens, a German soldier serving on one of the ships, left a narrative describing the whole journey. The first edition was published in 1737 followed, among others, by a re-published edition made by German anthropologist Hans Plischke that was published in 1923. The important thing is that this version differs from the original to a great extent and the editor did not account for the changes he had introduced into the text: besides grammar and orthography modernization, he omitted certain portions, misinterpreted other ones and added some comments without marking them as his own. As a result, the narrative gives an impression of having been written by another author; Behrens appears as a person with a different character and attitude, weaker, less convincing and even less trustworthy than he really was. This article presents numerous examples of the distortions as a warning against making a scientific or an anthropological use of unreliable editions of source texts, as this may wield a negative influence upon our view and interpretation of the culture we are analyzing
Efficient experimental design for the Behrens-Fisher problem with application to bioassay
No full textA 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
Efficient Experimental Design for the Behrens-Fisher Problem with Application to Bioassay
No full textA 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
Parution : Doris Behrens-Abouseif, "The Book in Mamluk Egypt and Syria (1250-1517) Scribes, Libraries and Market", Brill, oct 2018.
No full textThe Book in Mamluk Egypt and Syria (1250-1517) Scribes, Libraries and Market Series: Islamic History and Civilization, Volume: 162 Author: Doris Behrens-Abouseif This book is the first to date to be dedicated to the circulation of the book as a commodity in the Mamluk sultanate. It discusses the impact of princely patronage on the production of books, the formation and management of libraries in religious institutions, their size and their physical setting. It documents the signif..
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