1,720,986 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
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Diagnosing and Remote Sealing of Leakage in Low-Pressure Sections of Natural Gas Distribution Networks
Full text linkResidential natural gas is estimated as responsible for almost 15% of California’s total methane (CH4) emissions from natural gas. It is not known what fraction of these emissions is due to fugitive leaks in the low-pressure portions of the natural gas distribution network. This research aimed to diagnose and potentially seal leakage in the low-pressure portions of natural gas distribution networks by using aerosols. This included developing and testing protocols for measuring leakage downstream of the meter in houses and commercial buildings, applying those protocols in 10 different locations, designing a system to seal leaks in those systems remotely, and applying the sealing process in a make-shift pipe network. Only 2 out of the 10 locations tested were above the leakage detection limit in unsealed networks; the variation in gas temperature posed a challenge to diagnosing the leakage rates. The aerosol process employed for remote sealing appeared to be capable of sealing leaks in natural gas distribution pipes but will require more refinement to address the extremely low leakage levels observed in this study
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
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Energy and Indoor Air Quality Impacts of Compartmentalization and Different Ventilation Strategies in California Multifamily Buildings
Full text linkCompartmentalization has been proposed as a strategy to improve indoor air quality (IAQ) and energy efficiency in multifamily buildings. California’s 2022 Building Energy Efficiency Standards requires multifamily buildings to either meet a unit airtightness requirement of 0.3 cfm50/ft2 or provide balanced ventilation. While there is consensus that compartmentalization enhances building performance, not enough studies exist to accurately quantify the impacts of different compartmentalization levels on pollutant exposure and energy usage. Furthermore, builders have raised concerns over the difficulty of meeting the airtightness requirement. Such discussion has called into question whether the IAQ benefits and energy savings achieved from compartmentalization justify the current requirement or support a stricter or more lenient requirement. Regulators need this primary data to develop well-informed building codes that promote safety, affordability, and energy efficiency. The study found that new-construction multifamily buildings are meeting the compartmentalization requirement with an average unit leakage of 0.16 cfm50/ft2. Ventilation flow testing suggested that adjusting flow rates down to the minimum ventilation requirement for each unit and installing air filters on dedicated outdoor air intakes could improve IAQ and save energy. Inter-unit transfer of secondhand was modeled to reduce significantly for tighter units, resulting in concentrations below hazardous exposure limits in non-smoking units. Annual energy savings from compartmentalization were estimated to be as much as 6% and GHG savings as much as 10%, however results were highly sensitive to climate zone and ventilation strategy
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
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