1,721,604 research outputs found
Press Release (1964-02-13) Major Ian Thomas to speak on "Peace, Communism and Christianity"
No full textUniversity of Minnesota, Duluth. News Service. (1964). Press Release (1964-02-13) Major Ian Thomas to speak on "Peace, Communism and Christianity". Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/195450
Ian Thomas Cochran, La gestion municipale du changement climatique : Le cas du transport de voyageurs en France, 2012
No full textIan Thomas Cochran, La gestion municipale du changement climatique : Le cas du transport de voyageurs en France, 2012. In: Revue Juridique de l'Environnement, n°2, 2013. pp. 385-386
Ian Thomas Cochran, La gestion municipale du changement climatique : Le cas du transport de voyageurs en France, 2012
No full textIan Thomas Cochran, La gestion municipale du changement climatique : Le cas du transport de voyageurs en France, 2012. In: Revue Juridique de l'Environnement, n°2, 2013. pp. 385-386
Radical additions to Arenes: Cyclisations, rearrangements and applications to natural product synthesis
No full textThe work described in this thesis concerns the intramolecular addition of an aryl radical to an arene tethered by differing linkages. Exposure of 2-iodoaryl benzyl ethers to tributyltin hydride and AIBN resulted in the formation of an aryl-aryl bond. Attack of the aryl radical occurred in a 5-exo-trig manner with a subsequent fragmentation and concomitant rearomatisation. A suitably placed radical acceptor or hydrogen atom donor was found to be bias the reaction pathway. 2-Iodostilbenes were subjected to tributyltin-mediated radical forming conditions with cyclisation occurring via a 6-exo/endo-trig pathway to give the corresponding phenanthrenes in good to excellent yield. 2-Iododihydrostilbenes gave poorer results with a mixture of dihydrophenathrene and direct reduction products observed. Mechanistic details of the reaction are also discussed. The methodology has been applied to the synthesis of [5]helicenes by an iterative radical cyclisation approach. Tandem radical cyclisations are described providing a three step synthesis of [5]helicenes. Application of the methodology towards the synthesis of the macrocyclic biarylheptanoid acerogenin E is detailed. The first total synthesis of toddaquinoline is also described. Preliminary work on the use of tributyltin hydride in combination with tetrabutylammonium fluoride for the reduction of aryl halides is illustrated.</p
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
Do possible worlds compromise God’s beauty? A reply to Mark Ian Thomas Robson
Get PDFIn a recent article Mark Ian Thomas Robson argues that there is a clear contradiction between the view that possible worlds are a part of God's nature and the theologically pivotal, but philosophically neglected, claim that God is perfectly beautiful. In this article I show that Robson's argument depends on several key assumptions that he fails to justify and as such that there is reason to doubt the soundness of his argument. I also demonstrate that if Robson's argument were sound then this would be a problem for all classical theists and not just those who hold the possible worlds view
String field theory and tachyon condensation
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.Includes bibliographical references (p. 133-142).In this thesis I discuss various aspects of Witten's cubic string field theory. After a brief review of the basics of string field theory we begin by showing how string field theory can be used to check certain conjectures about the tachyon vacuum. We then discuss the problem of trying to globally gauge fix string field theory. We end with a discussion of various results in the quantization of the theory.by Ian Thomas Ellwood.Ph.D
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
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