1,721,519 research outputs found
Jonathan D. Spence, The Memory Palace of Matteo Ricci
No full textJohnson David. Jonathan D. Spence, The Memory Palace of Matteo Ricci. In: Annales. Economies, sociétés, civilisations. 41ᵉ année, N. 1, 1986. pp. 91-94
Jonathan D. Spence, The Memory Palace of Matteo Ricci
No full textJohnson David. Jonathan D. Spence, The Memory Palace of Matteo Ricci. In: Annales. Économies, Sociétés, Civilisations. 41ᵉ année, N. 1, 1986. pp. 91-94
Examining photochemical reactivity of electron rich enediynes
No full textEnediyne natural products are known to inhibit the development of a neoplasm (cancer cell). Synthetic enediynes continue to be developed in laboratory to study their structure reactivity properties in an effort to develop more efficient drug candidates. The key event responsible for the biological properties is Bergman Cyclization of the enediyne unit to produce an aromatic diradical. These diradical then abstract hydrogen atoms from the DNA backbone in a tumor cell leading to apoptosis. Although enediynes may inhibit the development of neoplasm, they lack the selectivity to specifically target tumor cells. This project examines the incorporation of methoxy groups conjugated to the enediyne to improve photochemical activation towards Bergman cyclization. The methoxy groups are composed of an electron donating oxygen containing a methyl group that is attached to the enediyne core as a substituent. This project will examine the synthesis and photo-reactivity to better understand factors controlling light activated Bergman Cyclization. Overall, photoactivation may provide selective activation by delivery of light while electronic effects from the methoxy groups can increase reaction yield and reduce reaction time to help develop more efficient enediyne pro-drugs. The goal of this project is to study the methoxy effect at different locations within the enediyne structure
Jonathan D. Spence, Chinese Roundabout. Essays in History and Culture, New York, W.W. Norton and Co., 1992
No full textFabre Guilhem. Jonathan D. Spence, Chinese Roundabout. Essays in History and Culture, New York, W.W. Norton and Co., 1992. In: Études chinoises, vol. 14, n°1, Printemps 1995. pp. 168-170
Jonathan D. Spence, Chinese Roundabout. Essays in History and Culture, New York, W.W. Norton and Co., 1992
No full textFabre Guilhem. Jonathan D. Spence, Chinese Roundabout. Essays in History and Culture, New York, W.W. Norton and Co., 1992. In: Études chinoises, vol. 14, n°1, Printemps 1995. pp. 168-170
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
Jonathan D. Spence, Le Chinois de Charenton : de Canton à Paris au 18e siècle. Traduit de l'anglais par Martine Leroy-Battistelli, 1990
No full textElisseeff Danielle. Jonathan D. Spence, Le Chinois de Charenton : de Canton à Paris au 18e siècle. Traduit de l'anglais par Martine Leroy-Battistelli, 1990. In: Études chinoises, vol. 9, n°2, Automne 1990. pp. 192-195
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