1,759,354 research outputs found
Stereoselective Synthesis of Pamamycin-607
No full textA macrodiolide antibiotic pamamycin-607 was synthesized by joining two hydroxy acid
components. Three cis-2, 5-disubstituted tetrahydrofuran rings in the molecule were stereoselectively
prepared by radical cyclization reactions of β-alkoxyvinyl ketone intermediates and a β-alkoxymethacrylate
substrate. The key step of the synthesis is characterized by the predominant threo product formation in
the radical cyclization reaction of a β-alkoxymethacrylate intermediate
Resolución UNRN N° 607/2009. Curso de Extensión "Historia Social del Movimiento Obrero"
No full textFil: Universidad Nacional de Río Negro (U). Universidad Nacional de Río Negro. Río Negro, ArgentinaResolución UNRN N° 607/2009. Curso de Extensión "Historia Social del Movimiento Obrero"fals
Longest and Largest Artillery Battle of the Revolutionary War
No full textFor several long, hot, and exhausting hours during the afternoon of June 28, the largest land artillery battle of the American Revolution ragedOriginal file name 607 The American Cannons Open Fire.jp
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
Salt Lake & Utah 607
No full textSalt Lake & Utah Railroad passenger car 607 in a train station. A door is open with a standing sign "This Train For MAGNA" sitting outside of it. The back of the photo reads "Salt Lake & Utah #607, Salt Lake City, C. Savage.
Crowdfight request report 607
No full textReport of Crowdfight request 607 (https://crowdfightcovid19.org
El Tlacuache Núm. 607 (2014). 607 Año 13 (2014) febrero. El Tlacuache
No full textA 75 de años de la creación del Instituto Nacional de Antropología e Historia (INAH), descentremos los procesos de patrimonialización para poder conservar nuestra memoria diversa por Raúl Francisco González Quezada. - La costumbre vs. “la Ley”, el caso de plantas utilizadas por tradición en Tlayacapan para los nacimientos por Enrique Méndez Torres
- …
