1,721,107 research outputs found
Nucleophilic Substitution (SN2): Dependence on Nucleophile, Leaving Group, Central Atom, Substituents, and Solvent
No full textThe front cover artwork is contributed by the groups of Prof. Dr. Marcel Swart (Universitat de Girona and ICREA) and Prof. Dr. F. Matthias Bickelhaupt (Vrije Universiteit Amsterdam and Radboud University). The image shows a schematic potential energy surface associated with an archetypal bimolecular nucleophilic substitution (SN2) reaction. Read the full text of the Minireview at 10.1002/cphc.201701363
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
Joint Statement on Open Access for Researchers via Plan S
No full textBrussels, 24 September 2018
Three organisations representing early-career and senior researchers across Europe have today released a Joint Statement on Open Access for Researchers via Plan S (PDF 303 Kb).The statement from the European Council of Doctoral Candidates and Junior Researchers (Eurodoc), Marie Curie Alumni Association (MCAA), and Young Academy of Europe (YAE) welcomes and supports proposals from a coalition of national research funding organisations in Europe to achieve full and immediate Open Access to scientific publications by 01 January 2020.
The proposed ‘Plan S’ consists of 10 principles which will be enacted by the 11 national funders of ‘cOAlition S’. Our statement offers support for Plan S and recommendations on implementing the principles to ensure a smooth transition to full and immediate Open Access for researchers in Europe. Eurodoc President Gareth O’Neill: “Plan S is a bold and ambitious move for researchers to take back control of access to scientific publications. Author retention of copyrights, a funding boycott on hybrid publishing, and a funding cap on publication fees are especially radical. It is now crucial that early-career and senior researchers are heard to develop and implement the principles and make Plan S a success”.
The three organisations agree generally with the principles, but call for more details on some key aspects of the plan, such as the amount and duration of the funding cap as well as the importance of self-archiving and publishing models with no author-facing fees. MCAA Chair Matthew DiFranco:“Plan S is a bold step in the right direction for reigning in the exploitation of publicly funded research for private profits. However, the plan should not complicate efforts by researchers to publish their work and advance in their careers. Wider adoption of Plan S will be necessary to ensure that researchers benefit from the proposals”.
The plan should crucially not be implemented in isolation, but should occur simultaneously with the educating and training of researchers in Open Science, and the revision of the research reward system to include Open Science practices. YAE Chair Marcel Swart: “Plan S is only the first step to move away from evaluation practices based on journal impact factors and number crunching. Especially for early-career researchers, who are in a precarious moment in their lives, a fair evaluation is needed where research and scientific advances should play a central role. The implementation of Plan S without jeopardising young careers in an international competitive playfield is crucial for European research”.
We thank all of our members who contributed to this statement and also Ashley Farley, Bianca Kramer, Björn Brembs, Jon Tennant, and Peter Suber for critical comments on a draft version of this statement. Any errors are solely attributed to Eurodoc, MCAA, and YAE
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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