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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
Synthesis of Pt(II) and Ru(II) complexes with biological-interest ligands
No full textThe synthesis, characterization and biological properties of novel platinum(II) and ruthenium(II) complexes with dicarboxylate ligands as potential antitumor and antimetastatic agents, are described in this thesis. The platinum complexes were synthesized via solid phase approach, which is a new and very promising technique. According to this method, two amino acids are consecutively condensed to a resin, which is followed by the attachment of the platinum-chelating moiety. Before the cleavage of the resin, the platination takes place. Alternatively, the platination of the linker takes place in advance, and then this conjugate is condensed to the solid fixed dipeptide. The final step in both routes is the cleavage of the solid support (resin) giving the peptide-platinum compound. Two novel compounds were isolated, B614 and B617, which both contain the glycine-glycine dipeptide. In compound Β614, platinum is bound to the peptide by the two carboxylic groups of the linker while two ammonia molecules occupy the other two sites of the platinum coordination sphere. Contrarily, in compound Β617, platinum is bound to a diamine moiety while the chelating ligand 1,1-cyclobutane dicarboxylate (cbdc) occupies the other two sites of the platinum coordination sphere. The characterization of the starting materials, the intermediates and the final compounds has been carried out by means of NMR spectroscopy (1H, 195Pt, COSY) and mass spectroscopy (LCMS). The ruthenium(II) complexes were synthesized following the traditional methods (synthesis in solution) since very little is know about the reactivity of ruthenium towards dicarboxylates. The dicarboxylates which were used were: oxalate (ox), malonate (mal), 1,1-cyclobutane dicarboxylate (cbdc), and succinate (suc). The products obtained were 1) mononuclear (the ligand acts as chelate): K[fac- RuCl(dmso-S)3(η2-ox-O,O/)] (B71), [fac-RuCl(dmso-S)3(η2-ox-O,O/)] (B73), K[fac-RuCl(dmso-S)3(η2-mal- O,O/)]·2H2O (B81), fac-Ru(dmso-S)3(dmso-O)(η2-mal-O,O/) (Β82), K[fac-RuCl(dmso-S)3(η2-cbdc-O,O/)]·2H2O (B91), 2) dinuclear (the ligand acts as bridge): {fac-Ru(dmso-S)3(H2O)(μ-mal-O,O/)}2 (Β83), {fac-Ru(dmso- S)3(H2O)(μ-cbdc-O,O/)}2 (Β92), {fac-Ru(dmso-S)3(NH3)(μ-cbdc-O,O/)}2 (Β93), {fac-Ru(dmso-S)3(H2O)(μ-suc- O,O/)}2 (Β101), 3) dinuclear (the ligand acts as bis-bidentate): [{fac-Ru(dmso-S)3(Cl)}2(η4,μ-ox)] (B72), [{fac- Ru(dmso-S)3(dmso-O)}2(η4,μ-ox)](CF3SO3)2 (B74) and 4) tetranuclear (the ligand acts both as chelate and bridge): {fac-Ru(dmso-S)3(η3,μ-ox)}4 (Β75). All complexes were fully characterized by elemental analysis and variety of spectroscopic methods such as 1D and 2D NMR (1H, 13C, COSY, HMQC), IR, UV-Vis. The molecular structures of the complexes Β72, Β74, Β75, Β81, Β82, Β83, Β92, Β93 και Β101 were determined by X-Ray crystallography. The chemical behavior in aqueous solution of all Ru-dmso-dicarboxylate complexes was extensively studied, and some in vitro biological experiments were performed in order to evaluate their potential antitumor activity.Στη παρούσα διατριβή περιγράφεται η σύνθεση, ο χαρακτηρισμός και διάφορες μελέτες βιολογικού ενδιαφέροντος νέων συμπλόκων του λευκοχρύσου(ΙΙ) και του ρουθηνίου(ΙΙ) που περιέχουν δικαρβοξυλικούς υποκαταστάτες, ως ενδεχόμενα αντικαρκινικά και αντιμεταστατικά μέσα. Για τη σύνθεση των συμπλόκων λευκοχρύσου χρησιμοποιήθηκε μια καινούργια και πολύ ελπιδοφόρα τεχνική, η σύνθεση μέσω στερεάς φάσης. Σύμφωνα με αυτή δύο αμινοξέα προσκολλούνται διαδοχικά σε μια ρητίνη, στη συνέχεια προσκολλάται ένας «σύνδεσμος» και μετά γίνεται η σύμπλεξη του λευκοχρύσου. Εναλλακτικά, πρώτα γίνεται η σύνθεση του συμπλόκου «σύνδεσμος»-Pt και στη συνέχεια αυτό προσκολλάται στο διπεπτίδιο. Το τελικό στάδιο και στις δύο πορείες είναι η αποκοπή της ρητίνης και η παραλαβή του ελεύθερου συμπλόκου. Απομονώθηκαν δύο νέα σύμπλοκα, το Β614 και Β617, στα οποία το διπεπτίδιο ήταν το διπεπτίδιο γλυκίνη-γλυκίνη. Στο Β614 το άκρο του «συνδέσμου» ήταν ένα δικαρβοξύλιο στο οποίο ο PtII ήταν δεσμευμένος χηλικά ενώ οι άλλες δύο θέσεις στη σφαίρα σύνταξης του μετάλλου ήταν κατειλημμένες από δύο μόρια ΝΗ3. Στο Β617 το άκρο ήταν ένα τμήμα αιθυλενοδιαμίνης (en) στην οποία ο PtII ήταν και πάλι δεσμευμένος χηλικά ενώ οι άλλες δύο θέσεις ήταν κατειλημμένες από τον δισθενή χηλικό υποκαταστάτη 1,1- κυκλοβούτανο δικαρβοξυλικό ιόν (1,1-cyclobutane dicarboxylate, cbdc). Τα αρχικά αντιδραστήρια, τα ενδιάμεσα προϊόντα και τα τελικά σύμπλοκα χαρακτηρίσθηκαν με φασματοσκοπία NMR (1H, 195Pt) και φασματομετρία μάζας (MS). Τα σύμπλοκα του ρουθηνίου συντέθηκαν με τους παραδοσιακούς τρόπους (σε διάλυμα) καθώς πολύ λίγα είναι γνωστά για την αλληλεπίδραση δικαρβοξυλίων με ιόντα RuΙΙ. Οι δικαρβοξυλικοί υποκαταστάτες που χρησιμοποιήθηκαν ήταν: τα οξαλικά (oxalate, ox), τα μηλονικά (malonate, mal), τα ηλεκτρικά (succinate, suc) και τα 1,1-κυκλοβούτανοδιικά (cbdc) ιόντα. Τα σύμπλοκα που απομονώθηκαν, ανάλογα με τις συνθήκες, ήταν 1) μονομερή (στα οποία ο υποκαταστάτης δρα δισχιδως/χηλικά): K[fac-RuCl(dmso-S)3(η2-ox-O,O/)] (B71), fac-[Ru(dmso-S)3(dmso-O)(η2-ox-O,O/)] (B73), K[fac-RuCl(dmso-S)3(η2-mal-O,O/)]·2H2O (B81), fac-[Ru(dmso-S)3(dmso-O)(η2-mal-O,O/)] (Β82), K[fac- RuCl(dmso-S)3(η2-cbdc-O,O/)]·2H2O (B91), 2) διμερή (στα οποία ο υποκαταστάτης δρα ως γέφυρα, με το κάθε καρβοξύλιο να συμπλέκεται μονοσχιδώς): {fac-Ru(dmso-S)3(H2O)(μ-mal-O,O/)}2 (Β83), {fac-Ru(dmso- S)3(H2O)(μ-cbdc-O,O/)}2 (Β92), {fac-Ru(dmso-S)3(NH3)(μ-cbdc-O,O/)}2 (Β93), {fac-Ru(dmso-S)3(H2O)(μ-suc- O,O/)}2 (Β101), 3) διμερή (στα οποία ο υποκαταστάτης δρα δισ-δισχιδώς): [{fac-Ru(dmso-S)3(Cl)}2(η4,μ-ox)] (B72), [{fac-Ru(dmso-S)3(dmso-O)}2(η4,μ-ox)](CF3SO3)2 (B74) και 4) τετραμερές (στο οποίο ο υποκαταστάτης δρα χηλικά και συγχρόνως γέφυρα μέσω του ενός από τα δύο ελεύθερα άτομα οξυγόνου): {fac-Ru(dmso- S)3(η3,μ-ox)}4 (Β75). Όλα τα σύμπλοκα χαρακτηρίσθηκαν πλήρως με στοιχειακή ανάλυση και διάφορες φασματοσκοπικές μεθόδους όπως NMR (1H, 13C, COSY, HMQC), IR, UV-Vis. Επίσης οι μοριακές δομές των συμπλόκων Β72, Β74, Β75, Β81, Β82, Β83, Β92, Β93 και Β101 προσδιορίσθηκαν με κρυσταλλογραφία ακτίνων-Χ. Μελετήθηκε εκτενώς η χημική συμπεριφορά αυτών των συμπλόκων εντός υδατικών διαλυμάτων και πραγματοποιήθηκαν in vitro βιολογικές δοκιμασίες για να εκτιμηθεί η ενδεχόμενη αντικαρκινική τους δράση
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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