1,721,004 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
Delvento C, Arcieri F, Marcotrigiano AR, Guerriero M, Fanelli V, Dellino M, Bouwmeester H, Lotti C, Ricciardi L, Pavan S (2023) High-density linkage mapping and genetic dissection of resistance to broomrape (Orobanche crenata Forsk.) in pea (Pisum sativum L.)
No full textPea (Pisum sativum L.) is a widely cultivated legume of major importance
for global food security and agricultural sustainability. Crenate broomrape
(Orobanche crenata Forsk.) (Oc) is a parasitic weed severely affecting
legumes, including pea, in the Mediterranean Basin and the Middle East.
Previously, the identification of the pea line ‘ROR12’, displaying
resistance to Oc, was reported. Two-year field trials on a segregant
population of 148 F7 recombinant inbred lines (RILs), originating from a
cross between ‘ROR12’ and the susceptible cultivar ‘Sprinter’, revealed
high heritability (0.84) of the ‘ROR12’ resistance source. Genotyping-bysequencing
(GBS) on the same RIL population allowed the construction of a
high-density pea linkage map, which was compared with the pea reference
genome and used for quantitative trait loci (QTL) mapping. Three QTLs
associated with the response to Oc infection, named PsOcr-1, PsOcr-2 and
PsOcr-3, were identified, with PsOcr-1 explaining 69.3% of the genotypic
variance. Evaluation of the effects of different genotypic combinations
indicated additivity between PsOcr-1 and PsOcr-2, and between PsOcr-1 and
PsOcr-3, and epistasis between PsOcr-2 and PsOcr-3. Finally, three
Kompetitive Allele Specific PCR (KASP) marker assays were designed on the
single nucleotide polymorphisms (SNPs) associated with the QTL significance
peaks. Besides contributing to the development of pea genomic resources,
this work lays the foundation for the obtainment of pea cultivars resistant
to Oc and the identification of genes involved in resistance to parasitic
Orobanchaceae
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
Insect detection in foods through an SSR-based approach
No full textInsects are a valuable source of essential peptides and amino acids that are beneficial to human health. They represent also an efficient alternative to animal and vegetable proteins also in terms of space and water. In 2019, the EU approved four insect species as novel foods safe for human consumption on the European market: Tenebrio molitor larva (yellow mealworm), Locusta migratoria (migratory locust) Acheta domesticus (domestic cricket) and Alphitobius diaperinus. This has opened the way to new protein sources alternative to meat but also hides a potential risk of fraud. Currently, there are no analytical approaches available to track the presence and quantities of insects authorized for food production.
This work aims to identify analytical approaches that are useful both for the identification of insect species present in foods and for possible fraudulent activities during the production process. In particular, we used a molecular approach based on molecular SSR markers, as they are easy to use, inexpensive and capable of analysing highly degraded DNA. This approach was used for the detection of the four authorised insect species.
To evaluate the accuracy of the proposed approach, we also analysed 4 homemade mixtures with increasing amounts of an insect-specific contaminant, which allowed the estimation of the detection limit of 5% (w/w). Finally, we demonstrated the feasibility of the proposed method and its effectiveness in detecting undeclared insects when they are present at a percentage of 5% or more
One for all: insect- based functional ingredient for global nutrition.
No full textInsects are increasingly considered as commonly acceptable as a suitable
protein source for humans and domesticated livestock in industrialized
Countries. The economic attention paid to insects as a protein source is
due to their high nutritional value but also to the increasing conventional
cost of other protein sources such as meat, fishmeal, and soybean meal.
Furthermore, the consumption of insects as a protein source has a lower
environmental impact than the protein source of vertebrates. Tenebrio
molitor L. belongs to the family Tenebrionidae of the Coleoptera order.
Recently, EFSA published a scientific opinion on the safety of dried
cornmeal (T. molitor larva) considering its use as novel food to produce
snacks, energy bars, and pasta. On the other hand, like most proteincontaining
foods, insects can induce immunoglobulin E (IgE)-mediated food
allergies. The major allergen has been identified in tropomyosin, a muscle
protein. This molecule belongs to a family of highly conserved proteins
with multiple isoforms found in both muscle and non-muscle cells of all
vertebrate and invertebrate species. Allergenic tropomyosins are found in
invertebrates such as crustaceans (shrimp, lobster, crab, spiny lobster),
arachnids (dust mites), insects (cockroaches), and mollusks (e.g. squid),
while vertebrate tropomyosins are non-allergenic.
The T. molitor Tropomyosin_1 gene sequence is not currently available. Its
characterization could provide important new information useful to ensure
consumer safety. Starting from the coding sequence (CDS) of the T. molitor
tropomyosin 1 gene (855 bp) available on NCBI, BLAST research was
performed. This analysis led to the identification of a very similar gene
sequence (87.60%) corresponding to the messenger RNA of tropomyosin-1 of
Tribolium castaneum (Herbst) (AN: LOC656904). Seven primer pairs
distributed over the T. castaneum sequence were designed. DNA was extracted
from T. molitor larvae and the fragments obtained from three pairs of
primers, for which the expected amplification products were obtained, were
sequenced. The whole gene sequence will allow us to validate the predicted
gene CDS and design the real-time primers. Subsequently, Tropomyosin_1 gene
expression in T. molitor larvae exposed to different growth conditions will
be evaluated. Our work will allow the identification of the Tropomyosin_1
gene sequence of Tenebrio molitor for the first time, the evaluation of any
possible differences in gene expression in larvae, and the study of the
role of Tropomyosin_1 as an allergen
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
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