1,721,103 research outputs found
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
In Memory of Maurizio Botta: His Contribution to the Development of Computer-Aided Drug Design
Full text linkMaurizio Botta was born in Manziana, near Rome (Italy), on May 1950. He built his background in chemistry at Sapienza University of Rome, and then, he received his Ph.D. in 1979 at the University of Brunswick (Canada) working at the total synthesis of complex natural products under the supervision of Prof. Karel Wiesner. From 1980 to 1987, he was a Researcher at the Sapienza University of Roma, and thanks to a NATO grant, he spent one year in 1985–1986 working as a postdoctoral associate in the group of Prof. Stephen Hanessian at the University of Montreal (Canada), where he was also invited as a visiting scientist many other times thereafter.(1) In 1987, he became an Associate Professor of medicinal chemistry at the University of Siena (Italy) and then a Full Professor in 2000. His scientific career was objectively successful, as he was author in more than 400 papers and books or book chapters, as well as inventor in more than 25 patents. He was a member of many scientific societies and editorial boards of journals mostly devoted to chemistry, medicinal chemistry and drug design. Particularly, he served as an Associate Editor for ACS Medicinal Chemistry Letters.
Besides his chemical background, in his research life Maurizio was intrigued by multiple fields adjacent to synthetic chemistry, such as biochemistry, biophysics, molecular biology, and computational modeling. This latter captured his attention and was implemented in his research activity as a crucial support to drug design since the beginning of the 1990s. It is worth noting that most of Botta’s publications report on the use of computational tools, mostly relying on (but not limited to) molecular mechanics (MM) approaches to rationalize existing biological data, or to drive the design and synthesis of bioactive compounds. His research initially focused on conformational analysis of small molecules with the double aim to seize the enormous possibilities offered by MM in modeling conformational flexibility detected by NMR spectroscopy, as well as to exploit the active analogue approach (AAA) developed by Prof. Garland Marshall to interpreting pharmacological properties of bioactive compounds.(2) Thanks to the fruitful collaboration with Prof. Kosta Steliou (University of Montreal), near the beginning of the 1990s, his group started to use the VAX version of Model software, implemented with the MMX force field that was especially suitable to modeling molecular systems with π-electron delocalization. In the same years, MacroModel was used to model with high accuracy the flexibility of an increased number of organic molecules thanks to different force fields, while the use of Sybyl was initially related to its graphic potential but would later pave the way to using the CoMFA 3D-QSAR methodology. Since then, the role of computational modeling studies became more and more relevant in the research of Maurizio’s group, up to the publication of papers mostly or exclusively conducted at the theoretical level. The crucial role of theoretical approaches in drug design was highlighted by the successful series of workshops, i.e., the European Workshop in Drug Design (EWDD), held every two years in the lovely location of Certosa di Pontignano in the countryside of Siena (Italy).
The aim of this paper is to honor the memory of Prof. Maurizio Botta and to briefly overview the major contributions he gave to the field of computer-aided drug design, chemical information, and modeling. Works that represented a milestone in his research strategy are briefly overviewed herein, grouped on the basis of the topic. Finally, a note to the EWDD series is provided
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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