1,723,878 research outputs found
Vienna, ÖNB | Cod. 5203
No full texthttps://alfa.obspm.fr/manuscripts/vienna5203The contribution consists of an exploration of the manuscript Vienna, ÖNB, Cod. 5203 in a digital exhibition of relevant manuscripts of Alfonsine astronomy. The entire exhibition can be viewed at the link: https://alfa.obspm.fr/La contribution consiste en une exploration du manuscrit Vienna, ÖNB, Cod. 5203 dans le cadre d'une exposition numérique de manuscrits pertinents de l'astronomie alfonsine. L'ensemble de l'exposition est consultable via le lien : https://alfa.obspm.fr
Block Card 5203 Lewis Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 5203 Lewis Avenue (Toledo, Ohio) | Dwelling | Greenwood Park Area (Toledo, Ohio) | Saltbox house
Praxis Teaching Reading: Elementary Education (5203)
No full textTest prep for the Praxis Teaching Reading: Elementary Education (5203) test, including subject reviews and two model practice testshttps://vc.bridgew.edu/fac_books/1173/thumbnail.jp
Block Card 5203 Hill Avenue
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Nichols Market (Toledo, Ohio) | 5203 Hill Avenue (Toledo, Ohio) | commercial buildings | Adams Township Area (Toledo, Ohio
Possibilities of ‘siliceous’ bacteria as biological agents for silicate removal
Full text linkPoster: [https://cer.ihtm.bg.ac.rs/handle/123456789/5203
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
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
Studies on the Burning of Complex Aluminum Particles
No full textInternational audienceIn this work, two different techniques are used to reduce the burning times of aluminum particles with the ultimate goal to improve performance of solid propellants. One method is to coat the particles by nickel, and the second is to decrease the particle size to nanometric scale. A thin coating of Ni on the surface of Al particles can prevent their agglomeration and at the same time facilitate their ignition, thus increasing the efficiency of aluminized propellants. In this work, ignition of single Nicoated Al particles is investigated using an electrodynamic levitation setup and laser heating of the particles. The levitation experiments are used to measure the particle ignition delay times and burning times at different Ni contents in the particles. Decreasing the size of Al particles increases their specific surface, and hence decreases the burning time of the same mass of particles. In this investigation, a cloud of Al nanoparticles suspended in a tube is ignited by an electric spark. The cloud experiments are used to measure the flame front propagation velocity for different particle sizes and different coatings. The results and their analysis show that both methods reduce the Al burning time. Ni coating reduces significantly the ignition time of micro sized Al particles and hence the total burning time compared to non-coated particles. The nano-sized particle clouds also burn faster than micro-sized Al particle clouds
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