1,720,958 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
Effective desiccant dehumidification system with two-stage evaporative cooling for hot and humid climates -
No full textThesis (M.E.)-- American University of Beirut, Department of Mechanical Engineeering, 2013.Advisor : Dr. Kamel Ghali, Professor, Mechanical Engineering--Co-Advisor : Dr. Nesreen Ghaddar, Professor, Mechanical Engineering--Member of Committee : Dr. Joseph Zeaiter, Assistant Professor, Chemical Engineering.Includes bibliographical references (leaves 36-37)This study examines the design and operation of a hybrid air conditioning system that uses 100percent fresh air and integrates a solid desiccant dehumidification system with a two-stage evaporative cooling system to optimize the system operation with respect to energy and water consumption while maintaining occupant thermal comfort. The first stage consists of cooling a fraction of the dehumidified air stream using an evaporative cooling pad, mixing the cooled air with the remaining bypassed air fraction and then supplying it to the space in order to minimize water consumption and limit the indoor relative humidity to acceptable levels. The second stage consists of locally cooling the occupant’s microclimate using a personalized evaporative cooler (PEC) that will allow for higher room bulk air temperatures. The system was implemented in an office space in Beirut and the optimization was carried using a derivative free genetic algorithm that handled three variables: the regeneration temperature; the air mass flow rate; and the fraction of air entering the evaporative cooler. The two-stage system achieved a 16.15percent reduction in energy consumption and a 26.93percent reduction in water consumption compared to a single-stage evaporative cooling system at the same thermal comfort level
Aerosol Heat and Mass Transfer in The Regulatory Science of Emerging Tobacco Products
Get PDFFor decades, the tobacco industry has manipulated the sensory characteristics of tobacco products including the degree of harshness experienced at the back of the throat. Commonly referred to as “throat hit”, this harshness derives from absorption of gas-phase nicotine by the sensory nerves. Users learn to associate throat hit with the positive psychological effects of nicotine, making throat hit a secondary reinforcer for smoking. On the other hand, throat hit can make products aversive to nicotine naïve users and can mediate inhalation patterns. In recent years, ENDS manufacturers have increased nicotine content and lowered the freebase nicotine fraction of their products, making products that can deliver palatably a high nicotine dose. In this study we developed a simplified computational model of the heat and mass transfer processes for a nicotine-containing aerosol generated by an ENDS device of given power and liquid composition flowing through the mouth and throat. We compared computed nicotine absorption in the throat to reported subjective effects from previous clinical studies conducted by our group. Across various ENDS configurations, we found that computed nicotine absorption in the upper airways strongly predicted subjective harshness scores (r=0.58; p<0.0001). This finding indicates the technical feasibility of making ENDS throat hit a regulatory target, i.e. to reduce product appeal to prospective nicotine naïve users. In addition, this work comprises three additional studies directed at assessing toxicant origins, mouth level emissions, and nicotine emission rates of novel tobacco products
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
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
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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