1,721,014 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
Competences in the R&D sector: evidence from a case study in the Area Science Park of Trieste
No full textAppropriate 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
On the structural response of flat-bottom silos under seismic excitation: Analytical developments and experimental investigations
Full text linkThe structural design of steel silos containing granular materials represents a challenging issue. Silos differ from many other civil engineering structures in that the weight of the silo structure is significantly lower than the one of the ensiled granular material and, in case of earthquake events, the particle-structure interaction plays an important role in the global dynamic response. The complex mechanism through which the ensiled material interacts with the silo wall has been studied since the XIX century. Nonetheless, several issues are still to be addressed and structural failures still occur during filling and, especially, discharging phases, as well as during strong ground motions. It is well known that both metal and concrete silos are characterized by a relatively high failure rate (both ground- and columns-supported silos), particularly during earthquakes. This thesis focus on different aspects related to the structural behavior of flat-bottom steel silos filled with granular material. Part I begins with a comprehensive review of the main analytical, numerical and experimental research devoted to the study of the static, dynamic and seismic behavior of filled silo systems, together with a review of the current design code provisions for the seismic design of silo systems. A comparison between the current code provisions on the seismic behavior of these particular structures and the actual body of knowledge is provided. Finally, a comprehensive review on the use of the seismic isolators in industrial facilities is reported as well. Part II presents a detailed description of experimental campaign conducted with the main aim of developing a non-standard test capable of measuring in a direct way the coefficient of friction of the stored material with the corrugated wall section of a silo structure. Part III is focused on developing a representative analytical framework of the induced horizontal forces by the granular material onto the internal silo wall during a seismic event. It starts by reviewing the historical development of the formula adopted by Eurocode EN1998-4:2006 and other current standards starting from the early research work in the 70s and 80s, passing by the main analytical model of [Silvestri et al., 2012] on which this work is based. Later on, a novel method for predicting the dynamic overpressure for other silo categories than those covered by the original development is presented. Therefore, it collects all the details of the new proposed refinements, introducing the main assumptions, the technical specifications, and the limits of validity. At the end, Part IV presents the interpretation of the results of a series of shaking-table tests on a full-scale flat-bottom manufactured steel silo filled with a granular material in fixed-base and isolated-base configurations. The isolators put between the table and the r.c. plate are Curved Surface Sliders friction pendulum devices. The results are relevant to the identification of the basic dynamic properties (frequencies and damping ratios) of the filled silo system, the experimental assessment of the static pressure (during filling phase) and seismic response (acceleration amplification values, dynamic overpressures and effective mass) of the system and the effectiveness of the isolation system at the base of the silo. Finally, the experimental results were exploited to provide a proof of concept for the proposed analytical model
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