1,720,962 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
Sensory product characterisations based on check-all-that-apply questions: Further insights on how the static (CATA) and dynamic (TCATA) approaches perform
No full textCheck-all-that-apply (CATA) questions have become one of the most popular methods for sensory characterisation with consumers. Temporal CATA (TCATA) is an extension of the former that takes into account the dynamic nature of sensory perception. The aim of the present work was to expand the methodological comparison of CATA and TCATA questions, considering the characterisation of solid products that undergo substantial oral processing when consumed. Five studies involving a total of 731 consumers were conducted with different product categories: dried apricots, peas, cheese, bread and milk chocolate. A between-subjects experimental design was used to compare the static and dynamic versions of CATA questions. For comparison purposes, TCATA data were analysed as CATA by collapsing the data into four fixed time intervals (quarters). The four quarters of TCATA were compared to results from CATA considering the frequency of use of the terms, sample discrimination, and product configurations. The temporal aspect of TCATA did not largely modify the average citation proportion of terms or the maximum citation proportion for individual terms. Significant differences among samples were established for most of the terms in both CATA and TCATA evaluations, albeit some subtle differences between the two methods were found. These differences were dependent on the product category and the specific sensory characteristics that were relevant for describing the focal samples. The largest differences were found for Study 5 (milk chocolate), for which TCATA identified a few additional insights on the evolution of similarities and differences among samples. However, in most cases general findings were virtually identical for both methodological approaches. In light of these results, the extra effort of using a dynamic sensory characterisation method compared to a static one, may, in many instances, not be warranted.Fil: Vidal Berriel, Leticia. Universidad de la República Facultad de Química; UruguayFil: Antúnez, Lucía. Universidad de la República Facultad de Química; UruguayFil: Ares, Gastón. Universidad de la República Facultad de Química; UruguayFil: Cuffia, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Lactología Industrial. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Lactología Industrial; ArgentinaFil: Lee, Pui-Yee. The New Zealand Institute for Plant & Food Research; Nueva ZelandaFil: Le Blond, Marie. The New Zealand Institute for Plant & Food Research; Nueva ZelandaFil: Jaeger, Sara R.. The New Zealand Institute for Plant & Food Research; Nueva Zeland
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
An investigation of young and educated Chinese consumers' perceptions of beverages treated by pulsed-electric field and high hydrostatic pressure processing
No full textHigh hydrostatic pressure processing (HPP) and pulsed-electric field (PEF) are processing technologies that add value to foods by improving safety through lowering microbial loads in addition to minimizing the changes in sensory properties and nutritional value. Little is known about how Chinese consumers perceive these processing technologies and what factors influence their food decision making. This thesis investigated Chinese consumers’ perceptions of HPP and PEF processing technologies, and the subsequent influence of these perceptions on consumers’ decision making for beverages treated by these technologies.
Both qualitative and quantitative research approaches were employed in five consumer studies: (i) focus groups were conducted to investigate consumers’ perceptions of HPP and PEF technologies and their treated healthy beverages; (ii) the attributes, consequences, and personal values influencing consumers’ healthy beverage decision making were identified using means-end chain theory and association pattern technique; (iii) conjoint analysis was used to measure the relative importance of the extrinsic attributes when consumers make fruit juice decisions; (iv) napping with ultra-flash profiling was applied to understand the sensory attributes that drive consumers’ perceptions of apple juices; and (v) the effects of technology information on consumers’ acceptance of HPP and PEF treated apple juices were investigated using “blind-label-informed” acceptance test.
The findings revealed that Chinese consumers were generally open-minded and receptive towards HPP and PEF technologies and were prepared to pay a premium for the treated beverages. Perceived benefits such as the reduced need for additives, retained flavor, and nutritional content for HPP and PEF treated beverages were most valued by the Chinese consumers. However, there are four key considerations that must be addressed during the development and marketing of HPP and PEF treated food products in China. Firstly, it is important to identify Chinese consumer segments. Cluster analysis identified three Chinese consumer segments: Health Conscious, Premium Product, and Long Product Shelf-life, revealing heterogeneity in Chinese consumers’ product preferences. Secondly, it is crucial for food manufacturers to select the right processing method for food products. The effects of HPP and PEF technologies on the sensory profile of apple juices were cultivar dependent. Thirdly, educational and communication requirements need to be carefully considered as these play a pivotal role in consumer acceptance of HPP and PEF technologies. The provision of technology information diminished consumers’ perceived risks towards HPP and PEF technologies, and increased their stated purchase intentions for the treated beverages. Lastly, special attention should be given to improving the labels of HPP and PEF treated food products. It is recommended to provide the processing technology information applied to the food on the product’s label as this information had a positive influence on Chinese consumer acceptance of HPP and PEF treated products.
The current thesis has demonstrated the use of a consumer-oriented approach to obtain an understanding of the mechanisms by which Chinese consumers form perceptions of HPP and PEF processing technologies and how these perceptions influence consumers’ beverage decision making. The insights gained in this thesis indicate an exciting time ahead for manufacturers of HPP and PEF treated food and beverage products in China
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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