1,721,041 research outputs found
Supplemental Material - Unveiling the formation of conspiracy theory on social media: A discourse analysis
No full textSupplemental Material for Unveiling the formation of conspiracy theory on social media: A discourse analysis by Boying Li, David Ji, Mengyao Fu, Chee-Wee Tan, Alain Chong and Eric TK Lim in Journal of Information Technology</p
Solanaceous Vegetable Breeding at AVRDC–The World Vegetable Center to Meet the Challenges of Climate Change in the Tropics
No full textAbiotic and biotic stresses are major constraints of vegetable production in the tropics
and climate change is expected to aggravate these problems. Depending upon the crop, the
combined effects of multiple stresses may reduce total yield, reduce product quality,
increase postharvest losses, and alter nutrient content. Consequently, vegetable varieties for
the tropics should possess tolerance to heat, salinity, and other abiotic stresses, carry an
array of disease and insect resistances, and still produce high yields of good quality produce
that meet market requirements. Meeting this challenge requires robust protocols to screen
and identify useful alleles from exotic germplasm and efficient selection methods to
facilitate incorporation of multiple stress-tolerance genes into new varieties. Development
of tropically adapted varieties of tomato (Solanum lycopersicum L.) and pepper (Capsicum
annuum) is a high priority at AVRDC – The World Vegetable Center. Tomato production in
the tropics has been devastated by increased incidence and severity of tomato yellow leaf
curl diseases (TYLCD) caused by whitefly-vectored begomoviruses. Development of
resistant varieties is complicated because the pathogen is highly diverse and almost all
TYLCD resistance genes originated from wild tomato species. Application of
marker-assisted selection (MAS) by AVRDC has facilitated development of tomato varieties
homozygous for multiple begomovirus resistance genes that are expected to offer higher
levels of resistance to a wider range of begomoviruses. Most modern tomato varieties are sensitive to heat, drought, and salinity, but sources of stress tolerance have been found
mainly in wild tomato accessions. AVRDC uses a multidisciplinary approach to map genes
conditioning heat, drought, and salinity tolerance in tomato and to identify markers linked to
targeted genes to facilitate gene introgression. Sweet pepper is a high value crop but
sensitive to heat. AVRDC’s strategy to develop a tropical sweet pepper emphasizes the
evaluation of sweet pepper lines under Taiwan summer stress (high temperatures and
humidity) for yield components (fruit number, fruit weight) and traits linked to heat stress
adaptation (pollen viability, root mass, vegetative biomass). Lines performing well for
different components or traits have been identified and our hypothesis is that crossing lines
with complementary traits and selection will lead to new lines with improved levels of heat
tolerance. Breeding varieties adapted to climate change will shift more attention toward
breeding for tolerance to abiotic stresses, which are often genetically and physiologically
complex. Manipulation of multiple genes and traits will complicate vegetable breeding and
will require effective use of conventional breeding techniques and molecular markers
involving multidisciplinary teams
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
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