1,722,392 research outputs found
<i>Not on the Mayflower</i>: Dietrich W. Botstiber's Journey from Anschluss Vienna to Philadelphia, 1938
No full textAbstract
This selection from Dietrich W. Botstiber's memoir chronicles his final months working as an engineer in Vienna and his journey to the United States in 1938, after Germany annexed Austria. It comes from chapters 17–20 of his memoir, Not on the Mayflower (2007). Botstiber had already been preparing to emigrate to the United States since as early as 1931 to further his engineering career, facilitating his exit in 1938. In the passage below, Botstiber observes the growing presence of Nazis in Vienna in the spring before his departure. He explains the extensive network of American and British officials and personal contacts he called upon to help him emigrate and his travels across Europe and the Atlantic. Botstiber lived the rest of his life in Philadelphia, working in several industries before launching the Technical Development Company. He began the foundation that bears his name in 1995 and passed away in 2002.</jats:p
A hemispherical dynamo model: Implications for the Martian crustal magnetization
No full textMars Global Surveyor measurements revealed that the Martian crust is strongly magnetized in the southern hemisphere while the northern hemisphere is virtually void of magnetization. Two possible reasons have been suggested for this dichotomy: a once more or less homogeneously magnetization may have been destroyed in the northern hemisphere by, for example, resurfacing or impacts. The alternative theory we further explore here assumes that the dynamo itself produced a hemispherical field (Stanley et al., 2008; Amit et al., 2011). We use numerical dynamo simulations to study under which conditions a spatial variation of the heat flux through the core-mantle boundary (CMB) may yield a strongly hemispherical surface field. We assume that the early Martian dynamo was exclusively driven by secular cooling and we mostly concentrate on a cosine CMB heat flux pattern with a minimum at the north pole, possibly caused by the impacts responsible for the northern lowlands. This pattern consistently triggers a convective mode which is dominated by equatorially anti-symmetric and axisymmetric (EAA, Landeau and Aubert, 2011) thermal winds. Convective up- and down-wellings and thus radial magnetic field production then tend to concentrate in the southern hemisphere which is still cooled efficiently while the northern hemisphere remains hot. The dynamo changes from an alpha(2) for a homogeneous CMB heat flux to an alpha Omega-type in the hemispherical configuration. These dynamos reverse on time scales of about 10 kyrs. This too fast to allow for the more or less unidirectional magnetization of thick crustal layer required to explain the strong magnetization in the southern hemisphere. (C) 2013 Elsevier B.V. All rights reserved
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Dietrich W. Poeck. — Cluniacensis Ecclesia. Der cluniacensische Klosterverband (10.-12. Jahrhundert). Munich, Fink, 1998 (Münst. Mittel.-Schriften, 71)
No full textRacinet Philippe. Dietrich W. Poeck. — Cluniacensis Ecclesia. Der cluniacensische Klosterverband (10.-12. Jahrhundert). Munich, Fink, 1998 (Münst. Mittel.-Schriften, 71). In: Cahiers de civilisation médiévale, 43e année (n°171), Juillet-septembre 2000. Regards croisés sur l'An Mil, sous la direction de Martin Aurell . pp. 320-321
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