1,721,115 research outputs found
SOP for calibrated color measurements of RTB foods using image analysis. High-throughput phenotyping protocols (HTPP), WP3
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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
Impact of brining and drying processes on the nutritive value of tambaqui fish (Colossoma macropomum)
No full textPreservation of fish as diet ingredient is challenging in many tropical regions due to poor socioeconomic conditions and lack of freezing facilities. So, alternative preservation techniques could be viable to address the issue. The present study evaluated the effect of brine salting (15% w/v) prior to drying at different temperatures on the nutrient profiles of tambaqui fish (Colossoma macropomum). Whole fish samples (n = 48; 792 ± 16 g; 8 months old) were grouped into two as brine-salted and non-salted, and treated at seven different drying temperatures of 30, 35, 40, 45, 50, 55 and 60°C for a period of 23 h each. To evaluate the impact of Maillard reaction, reactive lysine was also quantified. Drying temperature had no effect on the evaluated macro- and micro-nutrients of tambaqui fish (P > 0.05) while brining reduced the overall protein concentration by 6% (58.8 to 55.4 g/100 g DM; P = 0.004). Brining significantly reduced many amino acids: taurine by 56% (7.1 to 3.1 g/kg; P 0.05). Brining also reduced the concentrations of Se by 14% (149 to 128 μg/kg DM; P = 0.020), iodine 38% (604 to 373 μg/kg DM; P = 0.020), K 42% (9.71 to 5.61 g/kg DM; P 0.05). Agreeably, results of multivariate analysis showed a negative association between brining, Na, and ash on one side of the component and most other nutrients on the other component. In conclusion, drying without brining may better preserve the nutritive value of tambaqui fish. However, as a practical remark to the industry sector, it is recommended that the final product may further evaluated for any pathogen of economic or public health importance
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
Creation of a color reference chart for RTB foods color characterization. High-throughput phenotyping protocols (HTPP), WP3
Get PDFEither for visual evaluation or image analysis, a color selection chart allow for a more accurate and repeatable color quantification. Commercial color reference chart exist but covers a wide range of colors, making it harder to evaluate the desired object color. The present SOP describe step by step how to implement its own customized color reference chart and propose an R script automatizing the process. The creation of a color reference chart relies first on the extraction of typical colors from a collection of available numeric images covering the range of desired product color variation. This palette of color is then characterized in different color spaces, plotted on a chart and printed. Finally, the correspondence between the desired color value and the printed chart is verified using a chromameter
MIRS measurement on cassava cell walls and flours. High-throughput phenotyping protocols (HTPP), WP3
Get PDFThe purpose of this SOP is to use MIRS to predict the cooking behaviour of cassava from different varieties by using spectra of corresponding cassava cell walls or flour. For this purpose, eighty-nine samples of cell walls from 37 different varieties (2 or 3 roots per genotype) provided by CIAT (Colombia) were analysed by using Thermo Scientific™ Nicolet™ iS50R Research FTIR Spectrometers in the 4000-400 cm-1 region. For the repeatability test, 8 spectra of the same flour sample were acquired in order to determine the optimum number of MIRS measurements (replicates) required to be representative of the sample. The RMS obtained for 5 combinations of two replicates (2-3, 1-2, 3-5, 3-7 and 6-8) are 457, 1066, 710, 1352 and 614 μabs respectively. The RMS values between 2 replicates, randomly selected, were lower than the RMS mean for all the replicates. These results indicate that two replicates of the sample result to a spectral dispersion (variability) similar to the one obtained with 8 repetitions
SOP for hyperspectral imaging analysis of fresh RTB crops. High-throughput phenotyping protocols (HTPP), WP3
Get PDFDispelling 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
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