1,724,395 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
Appropriate 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
Correlation of creep of concrete with its dynamic properties
Full text link"This study was done as part of the research under the Illinois Cooperative Highway Research Program Project IHR-72, ""Prediction of Creep in Structural Concrete from Short Time Tests."""Made available in DSpace on 2021-11-04T16:27:35Z (GMT). No. of bitstreams: 2
TAM603-UILU-ENG-1971-8552.pdf: 258888720 bytes, checksum: 46cd9ddf9e9f44b36c6e213d148e9b9d (MD5)
license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5)
Previous issue date: 1961-09Illinois Highway Division 61/09; Comm Department Bureau of Public Roads 61/0
Measurement Of Multidirectional Thermal Conductivity Of Im7-G/8552 Unidirectional Composite Laminate
Full text linkThermal characterization of composite materials plays an important role in engineering design of thermal structures and aerospace systems and automotive, etc. There are limited data on these materials in the literature. In particular, multidirectional thermal characterization needs to be established for polymer matrix composites to determine their working temperatures and thermal conductivities. In unidirectional fiber reinforced composites, thermal conductivities are different in axial and transverse directions of the composite material. The purpose of this research was to determine multidirectional thermal conductivities of IM7-G/8552 unidirectional carbon/epoxy composite laminate and validate the data with micromechanics models and data in the literature for similar materials. IM7-G/8552 unidirectional composite material was fabricated, and two different types of specimens in axial and transverse direction were prepared. Flash Method was used to measure the thermal diffusivity in axial and transverse directions of fiber using the ASTM E-1461 standard. Differential Scanning Calorimeter was used to measure the specific heat of the composite material using the ASTM E-1269 standard. Then thermal conductivity was calculated by multiplying thermal diffusivity, specific heat capacity, and material density. The experiments were performed at temperatures ranging from 20°C to 100°C. The measured test results agreed well with micromechanics model and similar material in literature. Thermal conductivities of IM7/8552 at room temperature were k1= 4.89 W/m°C in axial and k3= 0.58 W/m°C in transverse directions
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
A critical study on impact damage simulation of IM7/8552 composite laminate plate
Full text linkPlate impact tests on IM7/8552 composite laminates with different projectile 10 incident angles and velocities were carried out. Numerical simulations were conducted to 11 predict the impact damage, with both Puck and LaRC failure criteria having been employed in 12 this study. The dynamic failure performance of IM7/8552 lamina was reviewed first, by 13 referring to data obtained from experiments conducted at a range of strain rates. The 14 performance of the assessed modelling approaches was evaluated by comparing the results 15 of simulations against experimentally (quantitatively and qualitatively) acquired projectile 16 velocity, impact load and the failure modes of the plates. It proved to be challenging to model the macroscopic damage of the laminate at elevated projectile velocities; further 18 improvement can be made through enriching the dynamic material data and mitigating the 19 mismatch between the complex fibre architecture and its numerical representation
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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