1,720,958 research outputs found
A study of Novec 649 fluid jets injected into sub-, trans- and super-critical thermodynamic conditions using planar laser induced fluorescence and elastic light scattering diagnostics
No full textThis dataset contains 4 folders that include relevant data to a study done on transcritical fluid jets within the Institute for Multiscale Thermofluids at the University of Edinburgh. Information provided varies from image and video files to tabulated data and MatLab scripts. A description of the information provided in each zipped folder has been added to facilitate finding relevant data
SUPERSEDED - A study of Novec 649 fluid jets injected into sub-, trans- and super-critical thermodynamic conditions using planar laser induced fluorescence and elastic light scattering diagnostics
No full text## This item has been replaced by the one which can be found at https://doi.org/10.7488/ds/3794 ##. This dataset contains 5 folders that include relevant data to a study done on transcritical fluid jets within the Institute for Multiscale Thermofluids at the University of Edinburgh. Information provided varies from image and video files to tabulated data and MatLab scripts. A description of the information provided in each zipped folder has been added to facilitate finding relevant data
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
An experimental investigation of the structural evolution of trans-critical fluid interfaces
Full text linkThis thesis applies simultaneous laser diagnostics to steady, rotationally symmetric, laminar jets of fluoroketone injected into a high-pressure and high-temperature vessel with the goal to unambiguously identify interface transitions under trans-critical conditions, for the first time. The chamber was filled with nitrogen and the ambient thermodynamic conditions were varied from subcritical, to transcritical, to supercritical levels, relative to both the pure injectant and the binary mixture that ultimately developed in the chamber following injection. The laminar jet presents a clear interface that can be studied optically and its evolution was monitored under different test cases. Vapour-liquid equilibrium calculations for the binary mixture helped establish conditions that would identify the mixture as supercritical. This was necessary owing to the effect that mixing has on the critical properties of the mixture (relative to its constituents) and to design the test cases.
Consistent with previous reports, it was found that the addition of nitrogen resulted in a rapid increase of the critical pressure of the mixture. The calculated phase envelopes reported here demonstrate the highly non-linear nature of mixing effects for the given binary mixture. Two main laser diagnostic techniques were employed: 1) Planar Laser Induced Fluorescence (PLIF) and 2) Planar Elastic Light Scattering (PELS). The former was used to obtain images of the mixture spatial distribution and the latter to monitor the strength of the interface. The diagnostics were applied simultaneously, thus allowing the comparison of interface strength and flow morphology at the same physical location and point in time. Using the average flow velocity at the nozzle, based on the known mass flowrate, and data from the elastic scattering signal, temporal estimates of the fluid interface destruction were calculated. Imaging results have shown that under all test cases a jet could be seen via PLIF, but a PELS signal was not always recorded. By knowing when a fluid interface was present or not, the PLIF images could be analysed in light of such information. Further, with the use of thermocouples 2-D temperature maps were obtained in the plane of injection. The temperature results presented further information about the heat transfer process of transcritical, laminar jets and, depending on the adopted definition of a supercritical fluid, indicated regions where the fluid was more likely to be supercritical. Cooling of the jet under the most demanding test case considered may have been an observation of pseudo-boiling effects (and their significance) due to injection near the Widom line. Investigation of intermittent, interface scattering observed even under supercritical cases revealed that the reflectivity of the fluid interface could potentially persist even beyond significant broadening of the interface. This meant that a decay of the interface scattering signal to zero would not necessarily coincide with the destruction of the interface, and some scattering could still be observed in supercritical cases where no interface is considered to be present. Magnified PLIF experiments were also done to obtain higher-fidelity images and density maps. These provided more information on fluid flow features and mixture distribution
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
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