1,721,057 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
An output-only ARX model-based sensor fusion framework on structural dynamic measurements using distributed optical fiber sensors and fiber Bragg grating sensors
Get PDFThe advent of distributed optical fiber sensing technologies has made continuous and dense measurement possible, and has a very broad application prospect in the field of structural health monitoring. However, not all of them are able to guarantee measurement accuracy in a good condition compared to traditional fiber sensors, such as FBGs (Fiber Bragg Grating sensor), strain gauges, etc. In our previous study (Cheng et al., 2019) of the calibration on static measurements for distributed sensors, it turns out that the signal to noise ratio from each single sensing point has proven to be much higher for FBGs than for distributed sensors. This paper presents a novel sensor fusion approach aiming to enhance the measurement quality of distributed fiber optical sensors in dynamic strain measurement. First of all, an output-only common-structured ARX (Auto-Regressive with exogenous input) model for dynamic MDOF (Multiple Degree of Freedom) systems with n degrees of freedom is studied where one of the measurement outputs is utilized as the input rather than actual external force, thus avoiding the inaccessibility of input signals in real structural engineering campaigns. After applying this model into a measurement system using a limited number of sensing points but with high fidelity, the outputs at unobserved points can then be roughly predicted using various curve fitting techniques on the ARX model coefficients against structural positions. However, the quality of the predicted performance cannot be guaranteed. Benefiting from a dense measurement but with low fidelity, the variation trend of the built ARX model coefficients against structural locations can be evaluated. Combined with EKR interpolation technique, the built ARX model from a high-fidelity system is then coupled to the evaluated trend of ARX model coefficients from a low-fidelity system, which leads to a further enhancement of its measurement quality at the unobserved points. To verify the feasibility and effectiveness of the presented sensor fusion approach, numerical studies on a 10-DOF MDOF system are conducted, indicating a satisfactory forecast with very small values of mean square errors for the unobserved DOFs. To further investigate the benefits of the proposed sensor fusion approach, experimental activities on a steel-beam are performed, aiming to enhance/calibrate the measurement performance on distributed fiber sensor (low fidelity) by incorporating four FBG sensors (high fidelity) as a calibration reference. The experimental results show that the intervention of the proposed approach yields significant improvement in the measurement quality for distributed fiber optic sensors
Fast simulation of 3-D surface flanging and prediction of the flanging lines based on one-step inverse forming algorithm
No full textDispelling 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
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