1,720,953 research outputs found
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
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
Integrated cellular, proteomic and metabolite analysis of argyrin B with rational design approaches for immunoproteasome-selective inhibitors
No full textThe ubiquitin-proteasome system plays a critical role in cellular protein degradation and homeostasis. Current proteasome inhibitors (PI) present great efficacy against haematologic cancers due to the high secretory load creating an increased dependency on proteostasis, yet resistance and adverse effects persist. The immunoproteasome has recently emerged as an attractive and selective target due to its preferential expression in disease states. Here the constitutive proteasome (CP) active sites β1c, β2c and β5c are replaced with immunoproteasome isoform containing β1i, β2i and β5i. Many ongoing efforts are focused on studying immunoproteasome-selective inhibitors, characterising their active site binding specificity and biochemical impact.
Argyrin analogues are naturally derived cyclic peptides showcasing antibacterial, immunosuppressive and anti-tumour effects. Efficacy and mechanisms vary by analogues, many of which are not characterised nor assessed in a variety of models. Despite this, there is demonstrable therapeutic potential through proposed targeting of the proteasome and mitochondrial elongation factor G; both integral to proteostasis. Further to this, argyrin B analogue has shown potential for selective inhibition of the β1i site of the immunoproteasome. This thesis extents studies on argyrin analogues as potential proteasome inhibitors through in silico analysis. Alongside biological studies of argyrin B cellular impact, proteomic effect and phase I metabolism.
Potential interactions of 16 argyrin analogues at CP and immunoproteasome active sites were studied by molecular docking using Autodock 4.2. Results showed striking preferential binding at β1i site over β1c site (p<0.05) in 75% of analogues, with analogues K, J, I and B additionally exhibiting improved β5i over β5c binding (p<0.05). For further SAR insights, a panel of naphthyl-azotricyclic-urea-phenyl scaffold-based compounds were docked using the same methods, corroborated through in vitro purified enzymatic assays. The key reasons for observed selectivity of these compounds are differences in subunit protein sequences, including substitutions G97H and M95S in β1c-β1i and T21S, A46S and S116E β5c-β5i, alongside differences in hydrophobic motifs that may have broader applications in rational drug design.
Argyrin B was further characterised for in vitro cellular impact in RPMI8226 multiple myeloma (MM) cells and noncancerous B-lymphocyte derived RPMI1788 cells and compared with the established PI, carfilzomib. From MTT assays and flow cytometry analysis, argyrin B exposure revealed cytotoxicity at low micromolar IC50 values. Interestingly, an increased sensitivity was shown towards RPMI8226 compared to RPMI1788, in contrast to carfilzomib. Quantitative proteomics experiments at IC50 doses, using UHPLC coupled to a Q-exactive Orbitrap mass spectrometer were employed to study the effects of argyrin B and carfilzomib on protein expression. Indicative of PIs, both compounds and cells triggered an unfolded protein response with upregulation of heat shock proteins, autophagy and proteasome bounce-back. Distinct regulation and putative selective MM targets identified in RPMI8226 included: STHM1, API5, PARK7 and MIF. Compared to carfilzomib, argyrin B exhibited greater differential protein expression between the cell types, yet overall at both cell types fewer biological pathways were impacted (FDR<0.005), together suggesting a more targeted action. Finally, the microsomal degradation of argyrin B followed by detection of metabolite compounds, exhibited oxidation and demethylation transformations, providing links back to SAR applications and analogue differences.
In summary, this study identified site-selective mechanisms for IP inhibition through in-silico investigation of argyrin analogues and analogues based on a naphthyl-azotricyclic-urea-phenyl scaffold. Further to this, the unique biochemical impacts of argyrin B on MM and B-lymphocyte cells were identified. With distinct impacts from carfilzomib, this can help to overcome current issues of resistance and off-target effects. Combined, the results from this study will advance the development of next generation PIs and understanding of the therapeutic applications of argyrins
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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