1,720,963 research outputs found
The new German Calibration Service (DKD)
No full text1.:
Ulbig, Peter: The new German Calibration Service (Deutscher Kalibrierdienst, DKD): A success story continues.
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Ulbig, Peter: The re-establishment of the German Calibration Service (Deutscher Kalibrierdienst, DKD) to ensure the uniformity of metrology.
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Technical Committees at a glance
Sonderdruck: Der neue Deutsche Kalibrierdienst (DKD)
No full text1.:
Ulbig, Peter: Der neue Deutsche Kalibrierdienst (DKD): Eine Erfolgsgeschichte geht weiter.
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Ulbig, Peter: Neugründung des Deutschen Kalibrierdienstes (DKD) zur Sicherung der Einheitlichkeit im Messwesen.
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Die Fachausschüsse im Überblick
Der neue Deutsche Kalibrierdienst (DKD)
No full text1.:
Ulbig, Peter: Der neue Deutsche Kalibrierdienst (DKD): Eine Erfolgsgeschichte geht weiter.
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Ulbig, Peter: Neugründung des Deutschen Kalibrierdienstes (DKD) zur Sicherung der Einheitlichkeit im Messwesen.
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Die Fachausschüsse im Überblick.
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Autoren
Der neue Deutsche Kalibrierdienst / Hermann von Helmholtz / Getreidefeuchte-Vergleichsmessung
No full textPTB-Mitteilungen. 2014, Band 124, Heft 2, S. 1 - 39. ISSN 0030-834X1.:
Ulbig, Peter: Der neue Deutsche Kalibrierdienst (DKD): Eine Erfolgsgeschichte geht weiter.
doi: 10.7795/310.20140201 http://dx.doi.org/10.7795/310.20140201
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Ulbig, Peter: Neugründung des Deutschen Kalibrierdienstes (DKD) zur Sicherung der Einheitlichkeit im Messwesen.
doi: 10.7795/310.20140202 http://dx.doi.org/10.7795/310.20140202
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Die Fachausschüsse im Überblick.
doi: 10.7795/310.20140203 http://dx.doi.org/10.7795/310.20140203
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Kind, Dieter: Der Genius Loci: Die Physikalisch-Technische Reichsanstalt und ihr erster Präsident Hermann von Helmholtz.
doi: 10.7795/310.20140204 http://dx.doi.org/10.7795/210.20140204
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Klüß, Regina, Andreas Breier, Norbert Heine, Thomas Kramp, Klaus May, Sabine Östreich-Schmidt und Martin Zehetbauer: Vergleichsmessungen – ein wirksames Instrument zur Dokumentation der eigenen Leistungsfähigkeit. Getreidefeuchte-Vergleichsmessung zum Referenzverfahren nach ISO 712 zwischen PTB, 10 Eichbehörden und 2 freien Marktteilnehmern.
doi: 10.7795/310.20140205 http://dx.doi.org/10.7795/310.2014020
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
PTR/PTB: 125 Jahre metrologische Forschung (Auszug aus: PTB-Mitteilungen 2012, Band 122, Heft 2. ISSN 0030-834X)
No full textPTB-Mitteilungen. Band 122 (2012), Heft 2. ISSN 0030-834X1.:
Göbel, Ernst O.: Vorwort.
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Buck, Wolfgang: Die Intention.
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Rechenberg, Helmut: Helmholtz und die Gründerjahre.
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Hollandt, Jörg: Der Schwarze Körper und die Quantisierung der Welt.
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Wynands, Robert: Das Kuratorium.
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Buck, Wolfgang: Neue Physik und neue Struktur.
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Hoffmann, Dieter: Der Fall Einstein.
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Buck, Wolfgang: Die „Verschmelzung“ von RMG und PTR.
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Hoffmann, Dieter: Die Physikalisch-Technische Reichsanstalt im Dritten Reich.
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Hoffmann, Dieter: PTR, PTA und DAMG: die Nachkriegszeit.
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Ulbig, Peter und Roman Schwartz: Das gesetzliche Messwesen und die OIML.
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Schmid, Wolfgang: Europäische Metrologie.
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Kind, Dieter: Die Wiedervereinigung der Metrologie in Deutschland.
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Schwartz, Roman und Harald Bosse: Die PTB − metrologischer Dienstleister und Partner für Industrie, Wissenschaft und Gesellschaft.
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Göbel, Ernst O. und Jens Simon: Die PTB im 21. Jahrhundert.
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Autoren.
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Bildnachweis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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