119,360 research outputs found

    Selections from Mathematics: Our Great Heritage Edited by William L. Schaaf

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    This paper reviews and summarizes several essays within the text, Mathematics: Our Great Heritage edited by William L. Schaaf

    Le Roman de Moriaen, trad. Baukje Finet van der Schaaf

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    Le volume propose le texte en moyen néerlandais versifié du Roman van Moriaen et sa traduction française par Baukje Finet van der Schaaf. La collection qui accueille l’ouvrage s’intéresse à « un domaine problématique à explorer bien plus qu’un univers circonscrit à décrire » et refuse « une vision franco-française du Moyen Âge ». On ne peut que s’en réjouir. La démarche est très utile puisque la traduction permet à des chercheurs qui ne lisent pas parfaitement le moyen néerlandais de mettre L..

    Qualitative Anforderungen an pneumologische Arztbriefe

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    Siemen L, Unnewehr M, Friederichs H, Schaaf B. Qualitative Anforderungen an pneumologische Arztbriefe. Pneumologie. 2020;74(1):139.Es gibt keine validen Daten über qualitative Anforderungen an Arztbriefe (AB) aus Sicht der Rezipienten. AB als Berichte über ambulante und stationäre Behandlungen werden täglich millionenfach von Fachärzten erstellt. Ob und inwieweit sich Pneumologen hier von anderen (Fach)-Ärzten unterscheiden, ist nicht bekannt

    Le Roman de Moriaen, trad. Baukje Finet van der Schaaf

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    Le volume propose le texte en moyen néerlandais versifié du Roman van Moriaen et sa traduction française par Baukje Finet van der Schaaf. La collection qui accueille l’ouvrage s’intéresse à « un domaine problématique à explorer bien plus qu’un univers circonscrit à décrire » et refuse « une vision franco-française du Moyen Âge ». On ne peut que s’en réjouir. La démarche est très utile puisque la traduction permet à des chercheurs qui ne lisent pas parfaitement le moyen néerlandais de mettre L..

    Le Roman de Moriaen, trad. Baukje Finet van der Schaaf

    No full text
    Le volume propose le texte en moyen néerlandais versifié du Roman van Moriaen et sa traduction française par Baukje Finet van der Schaaf. La collection qui accueille l’ouvrage s’intéresse à « un domaine problématique à explorer bien plus qu’un univers circonscrit à décrire » et refuse « une vision franco-française du Moyen Âge ». On ne peut que s’en réjouir. La démarche est très utile puisque la traduction permet à des chercheurs qui ne lisent pas parfaitement le moyen néerlandais de mettre L..

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    The phenotypic spectrum of Schaaf-Yang syndrome: 18 new affected individuals from 14 families

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    Purpose: Truncating mutations in the maternally imprinted, paternally expressed gene MAGEL2, which is located in the Prader-Willi critical region 15q11-13, have recently been reported to cause Schaaf -Yang syndrome, a Prader-Willi-like disease that manifests as developmental delay/intellectual disability, hypotonia, feeding difficulties, and autism spectrum disorder. The causality of the reported variants in the context of the patients' phenotypes was questioned, as MAGEL2 whole -gene deletions seem to cause little or no clinical phenotype. Methods: Here we report a total of 18 newly identified individuals with Schaaf-Yang syndrome from 14 families, including 1 family with 3 individuals found to be affected with a truncating variant of MAGEL2, 11 individuals who are clinically affected but were not tested molecularly, and a presymptomatic fetal sibling carrying the pathogenic MAGEL2 variant. Results: All cases harbor truncating mutations of MAGEL2, and nucleotides c.1990-1996 arise as a mutational hotspot, with 10 individuals and 1 fetus harboring a c.1996dupC (p.Q666fs) mutation and 2 fetuses harboring a c.1996deIC (p.Q666fs) mutation. The phenotypic spectrum of Schaaf-Yang syndrome ranges from fetal akinesia to neurobehavioral disease and contractures of the small finger joints. Conclusion: This study provides strong evidence for the pathogenicity of truncating mutations of the paternal allele of MAGEL2, refines the associated clinical phenotypes, and highlights implications for genetic counseling for affected families

    Tuning the4fstate occupancy of Ce in highly correlatedCeSi∕Femultilayers: An x-ray absorption spectroscopy study

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    Spectra of x-ray absorption were measured at the L-2,L-3(2p) and M-4,M-5(3d) edges of Ce in multilayers [Ce1-xSix/Fe]xn (x between 0.1 and 0.65), with single-phase amorphous Ce1-xSix sublayers. The study uncovers the highly correlated nature of this layered system; an alpha-phase-like electronic configuration of Ce is observed, which indicates considerable hybridization between the 4f and conduction-band states. This is at variance with single alloy films Ce1-xSix which show a gamma-phase-like Ce configuration already at x=0.1. X-ray magnetic circular dichroism measured at the L-2,L-3 edges of Ce in the multilayers reveals magnetic order on the 5d electrons, induced by the interaction with Fe at the interfaces. With increasing the Si content, the strength of the 4f-conduction-band hybridization is reduced, which is reflected in a growing occupation of the Ce 4f states. Variations of the line shape and intensity of the L-2,L-3-edge dichroism spectra are very complex. The spectra not only are related to the magnetic 5d polarization in the ground state but are largely controlled by the exchange interaction between the photoexcited 5d electron and the 4f electron, which generates a spin-dependent enhancement of the radial parts of the 2p-to-5d matrix element. The strength of the 4f-5d exchange interaction can be controlled by varying the composition of the Ce1-xSix sublayers. At high Si concentration and low temperature, it induces a change in sign of the dichroic signal. We present a detailed discussion within a simple phenomenological model

    Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?

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    In this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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