1,720,954 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
A Computational Tool for the Reliable Prediction of Pavement Performance based on Temperature Data
Get PDFThis study presents a computational tool for predicting pavement performance using long-term temperature data from thermocouple trees embedded in three flexible and two rigid pavement sections at the MnROAD facility. The research leverages spectral and probabilistic analyses to assess thermal behavior and its impact on pavement condition. Temperature measurements, supplemented by weather data, were processed to address missing data and artifacts using compressed sampling, ensuring a uniform 15-minute sampling interval. Spectral analysis techniques based on Fourier Transform and Wavelet Analysis with Generalized Harmonic Wavelets were used to model pavement layers as a cascade of filters, revealing the time-varying behavior of the filters' gain and phase shift, which indicates that they are sensitive to aging, moisture, and compaction. Wavelet analysis provided superior temporal resolution for detecting transient thermal phenomena. A probabilistic framework using Markov Chain Monte Carlo (MCMC) methods estimated thermal diffusivity coefficients, achieving residuals below 1.17 degree C and robust uncertainty quantification. The results highlight distinct thermal responses across pavement layers, with asphalt showing uniform behavior and base/subgrade layers exhibiting environmental sensitivity. Interfaces between layers displayed significant time-dependent changes, potentially linked to densification. Implemented as a modular Python package with Jupyter notebook examples, publicly available on GitHub, the tool offers a scalable solution for pavement monitoring. This research demonstrates that thermocouple-derived temperature data, when analyzed with advanced computational methods, provides reliable indicators of pavement degradation, supporting data-driven infrastructure management decisions.dos Santos, Ketson; Marasteanu, Mihai; Zhao, Zifeng; Duarte, Joao G. C. S.; Custis, Simon. (2025). A Computational Tool for the Reliable Prediction of Pavement Performance based on Temperature Data. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/276872
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
Pavement Marking/Colored Pavement Friction Differential and Product Durability
No full textThe frictional characteristics of pavement surfaces is a major component of safety. Pavement markings play a very important role in traffic flow and safety, but they also have different friction characteristics than pavement due largely to the spherical glass media needed to improve retroreflectivity for night visibility and the marking material itself. The sudden change in frictional characteristics - friction differential - can create a safety hazard for pedestrians, motorcyclists, and bicyclists, especially under wet conditions. In this research effort, this issue was addressed first by performing a literature review, including a comprehensive review of the NordicCert certification process used in Scandinavian countries for selecting pavement marking products and conducting a survey to evaluate how users are affected by the friction differential between pavement markings and normal pavement surface. Then, based on recommendations from members of the Technical Advisory Panel, the research team developed and performed in situ experiments at MnROAD to determine the friction properties of various pavement markings, using a dynamic friction tester (DFT) and British pendulum test (BPT). A Sideway-force Coefficient Routine Investigation Machine (SCRIM) was also used to provide continuous friction measurement data. The data analysis showed that all three test methods (DFT, BPT, and SCRIM) produced comparable results and identified a similar range of friction differentials. A procedure used in the United Kingdom was recommended at the end, as an initial step in providing guidelines for selecting the friction coefficient of pavement markings.Marasteanu, Mihai; Zanko, Lawrence M.; Turos, Mugurel; Guerrier, Sanley; Tasin, Hamim; Custis, Simon. (2025). Pavement Marking/Colored Pavement Friction Differential and Product Durability. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/276866
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
- …
