1,724,226 research outputs found
Astronomische Nachrichten, nos 3468-3482
No full textR. R. Astronomische Nachrichten, nos 3468-3482. In: Bulletin astronomique, tome 16, 1899. pp. 188-197
Differences in birth rate according to women’s characteristics (N = 3482).
No full textDifferences in birth rate according to women’s characteristics (N = 3482).</p
Emitter depletion measurement and modeling in the T5&T6 Kaufman-type ion thrusters
No full textThis paper presents some of the aspects of a program undertaken by Qineti Q to characterize and determine the depletion rates and predict life time of its cathode technology. It reports on a long duration test performed on the T5 (15,000 hours) and a series of shorter tests on the T6 (800hours and 4000hours) including the results of destructive post test examinations and insert depletion measurements. The program also includes a modeling of insert depletion by Southampton University which has currently produced good agreement with measured depletion on the 15,000 hour T5 insert. Two tests have also been carried out on the T6 cathode to determine an end of life condition. An accelerated lifetest where the insert temperature was increased by 20oC has to date accumulated 3790 hours of operation. This is equivalent to 30,320hours with an 8×acceleration factor or 60,640hours assuming a 16× acceleration factor. Another test was also undertaken with two grossly depleted T6 inserts (25% and 50% depleted). Both cathodes although grossly depleted still behaved nominally. All the results give a degree of confidence in the compatibility of the T6 thruster cathode with future high impulse mission lifetime requirements
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
Warr, Joseph W., 1836-1864 (SC 3482)
Full text linkFinding aid and typescript (Click on “Additional Files” below for Manuscripts Small Collection 3482. Letter, 11 February 1862, to his mother and siblings from Joseph Warr, Company A, 2nd Minnesota Volunteers. From Somerset, Kentucky, he writes of troop movements toward Bowling Green, Kentucky, where he expects a victorious battle. He describes a recent encounter with Confederate forces crossing the Cumberland River and the severe wounds of those taken prisoner, but declares that the enemy would otherwise have shown no mercy. He notes the long knives of the Confederates (“Mississippi toothpicks”) and the homemade quality of their uniforms. He also urges his brother Charles to seek out an education and help their mother
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
3482. Die Klingenberger Chronik, éditée par A. Henne von Sargans, Gotha, 1861
No full text3482. Die Klingenberger Chronik, éditée par A. Henne von Sargans, Gotha, 1861. In: Molinier Auguste. Les Sources de l'histoire de France - Des origines aux guerres d'Italie (1494). IV. Les Valois, 1328-1461. Paris : A. Picard et fils, 1904. p. 96
- …
