1,720,956 research outputs found
The South African consumers’ interpretation of nutritional labelling systems of food products
Get PDFAbstract : Nutritional labelling systems are some measures available for effectively communicating food’s nutritional value. There are several nutritional labelling systems available, peculiar to each country and region. This study investigated globally available nutritional labelling systems and probed the effectiveness of three existing and two proposed South African systems in communicating the nutritional value of food. A quantitative research methodology executed on an online system, interrogated the extent to which South African consumers make use of available nutritional labelling systems when making food choices. The participants’ understanding of the systems was further cross-examined by requesting them to indicate the system(s) appropriate for the management of diet related health conditions such as non-communicable diseases. Findings indicate that nutritional labelling systems are considered important by a majority of participants and are indeed used when making food choices. The findings also confirm that participants have a clear understanding of the impact of food in the development of non-communicable diseases. Nonetheless, some participants confirm challenges with interpreting nutritional labelling systems. Findings indicated a preference for Nestlé know your serving device (NKYS) (76%), followed by the Teaspoon nutritional illustration system (TNI) (69%), Nutritional Information Table (NIT) (68%) and Guideline daily allowance buttons (GDA) (67%), with the Traffic light labelling system (TLL) (52%) receiving the lowest preference. The preference for NKYS, TNI and NIT labelling systems indicates that participants are made up of two groups. The first group consists of participants with preferences for numerical data as presented with the NIT and GDA. The second group is participants with a preference for graphical data as presented with the NKYS, TNI and TLL. It can be concluded that using nutritional labelling systems which present both numerical and graphical data on a food label will improve consumers’ understanding of nutritional information, thus allowing informed food choices.M.Tech. (Food Technology
Assessment of flavonolignans, elemental impurities and pesticide residues in various Silybum marianum L. Gaertn. (milk thistle) products in South Africa
Get PDFAbstract: Silybum marianum L. Gaertn. (commonly referred to as milk thistle) is a weed that has been used medicinally for over 2000 years. The therapeutic qualities of milk thistle are due to the presence of the flavonolignan silymarin. Herbal medicine is becoming increasingly popular in South Africa and, according to the WHO, an estimated the 80% of the global population rely on these medicines for primary health care. Due to the large number of constituents in herbal medicines, various differences between individual plants occur as a result of their agricultural history. However, few of the herbal medicines available to the consumer have been evaluated by the South African Health Products Regulatory Authority (SAHPRA). As such, some of these herbal medicines may therefore have questionable quality standards. A study conducted in 2019 on the chemical and microbiological quality of 26 milk thistle products sold in America and Czech Republic, noted large differences in the observed silymarin and declared silymarin and high concentrations of several pesticides, as well as the presence of microbiological contamination. No studies have yet been done comparing the quality of milk thistle products in South Africa...M.Tech. (Homoeopathy
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
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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