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
Modelling and Analysis of Various Issues in Viscoelastic Composite Rotors
No full textRotordynamics is a specific wing of science that deals with various issues related to rotating structures. The shaft or rotor is a rotating module that acts as the significant vibration source in most machines. Vibration brings in severe effects, and minimizing it is essential for the smooth and efficient operation of machines. Apart from balancing, replacing heavy metals with viscoelastic substances exhibiting lesser density and proficient material damping mechanism can stand as an alternative to reduce the excessive vibration. However, the main disadvantage of viscoelastic material is its low elastic modulus, which can be overcome by reinforcements. Composite materials have been extensively used for rotor design due to their lightweight, environment-friendly, low cost, quality, and better performance. Unlike a nonrotating system, material damping in the rotor shaft plays a significant role in deciding its dynamics. It produces a speed-dependent force acting tangentially and destabilizes the system after a certain spin speed. Hence, along with proper modelling of rotor systems with asymmetries due to internal damping, it also becomes essential to model the shaft considering the laminated nature of the composite that would satisfy both symmetric and non-symmetric stacking sequences. Further, under dynamic conditions, one of the main reasons for rotating systems' failure is the development of fatigue cracks. Considering the fact that breathing nature is indeed observed in the crack while the system is in operation, it is crucial to appropriately model the breathing behaviour of the crack and further study its effect on the rotating shaft dynamics. Along with the issues mentioned above, a common concern is observed in the large computational effort by the bulky and non-self-adjoint system, especially for more realistic models like submarine shafts, which considerably have a large continuum, lead to large and complex finite element models. The study based on the first issue proposes a novel mathematical technique named Equivalent Modulus Theory (EMT) to model viscoelastic laminated composite shafts and compare it with another method known as Direct Procedure Technique (DPT). The operator-based constitutive relationship is endorsed to each lamina to integrate the material damping, leading to a higher-order finite element (FE) model. Timoshenko beam theory is used in the finite element formulation to incorporate the shear deformation effect. Numerical results are acquired through eigenanalysis and unbalance response. On comparison, the results obtained out of the two procedures authenticate the suitability of EMT for complex heterogeneously laminated structures like rotor-shaft systems. The vital contribution of the study lies in the application of the novel mathematical formulation which uses the material properties of just the single lamina, eliminating the need for fabricating the whole composite irrespective of the stacking sequence. Further, the study has been continued to carry out the dynamic analysis of the composite rotor systems subjected to an important issue, i.e., cracks. Geometry based novel mathematical formulation for breathing mechanism is proposed. This introduces a time-varying stiffness matrix for simulating the breathing behaviour of the crack in a rotating composite shaft. The stiffness matrix is incorporated into the previously obtained higher-order FE model to study the effect of crack on stacking sequence and mode shapes of the heterogeneous laminated shaft. The issue of bulky and complex finite element models leading to higher computational time is dealt with using the reduction process, i.e., Modified SEREP (System Equivalent Reduction Expansion Process). The reduction process is applied over a realistic multilayer propeller shaft system exhibiting viscoelastic nature to check the efficiency of the process through computational time comparison. The carried out research work presents mathematical models that can be applied to any viscoelastic unidirectional composite shaft systems subjected to breathing cracks and exhibit complex and bulky natur
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
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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