1,721,284 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
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
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
Food allergens toxicology: clinical thresholds and food protection through the industry
No full textThe aim of my thesis for the Master of Advanced Studies (MAS) in Toxicology is to make a bridge between the industry Food Protection strategy, prevention of consumer food allergy and the clinical food allergen thresholds by presenting the 3 following chapters:
I. Clinical food allergen thresholds versus industry food allergen analytical limits: making the bridge between clinical data and the industry
II. Additional contributing cofactors to food allergies, forensic investigations & learnings, anaphylactic reaction, and food allergy treatments.
III. Flavour allergen risk assessment and Food Protection prevention: making the bridge between the industry best practices, Food Protection culture and the clinical prevention strategies.
This thesis is composed of 2 parts: 1 is the current document associated with part 2 which is the Allergen Risk Assessment Tool (Excel file). Food Protection can be understood through the association of Food Safety (accidental food adulteration), Food Defense (intentional ideologically motivated food adulteration to harm people) and Food Fraud mitigation (intentional economically motivated food adulteration). The Food Protection program goal is to prevent accidental (unintentional) and intentional contamination of food. Food Protection is covering application of regulations, risk assessments (HACCP/TACCP/VACCP), audits & inspections, validation, verification, and continuous improvement for health & safety of the consumers. Flavour allergen risk assessments are not commonly published. Among the different reasons, the flavour matrix complexity (A flavour can contain more than 50 different ingredients) and the need to protect the final consumer sensory “signature”, the confidential flavour formulae & its intellectual property.
Food allergen thresholds in ppm or in mg of food or food proteins are given by some regulations (ref (NEBRASKA)), by double blind clinical provocation tests (example Europreval), via toxicological studies and NOEL modeling & Eliciting Doses. But so far, there is no global consensus despite the new FAO/WHO recent publications. In parallel, available industry analytical methods determine the presence of some specific allergenic proteins, peptides or DNA molecules quantification but cannot confirm total absence which is required by marketing allergen free labels. These analytical methods are influenced by food surface nature (like stainless steel – EHEDG rugosity), food composition matrix, manufacturing process, food contact surface, residual water, residual solvents, hygiene level and consistency in adequate controls…). Adequate, because test selection is limited by the nature of the allergen, matrix complexity, Limit of Detection/Limit of Quantification (LOD/LOQ) & chosen technics (ELISA, PCR, HPLC-MS, MALDI-TOF, others…). “Matrixassisted laser desorption/ionization (MALDI) mass spectrometry (MS) is largely recognized as an important tool in the analysis of many biomolecules such as proteins and peptides” ref (Cosima D Calvano 1 2)).
Allergen specificity and laboratory capabilities, analysis accreditation & proficiency tests make industry risk evaluation, more and more complex & legal/penal. Analytical methods have some limitations, and the clinical thresholds/reference doses in mg of food proteins have been recently reviewed by an expert committee led by WHO/FAO, US FDA & one by ILSI.</p
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