1,720,960 research outputs found
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
GROWTH AND YIELD PERFORMANCE OF DIFFERENT CHERRY TOMATO VARIETIES GROWN IN DIFFERENT CALCIUM LEVELS
Get PDFA Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
In Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
HORTICULTUREA pot experiment was conducted in the semi-greenhouse at the Horticulture Farm of Sher-e-
Bangla Agricultural University, Dhaka 1207, Bangladesh, during October 2019 to March 2020
to find out the best combination of calcium fertilizers and different varieties for successful
cherry tomato production. The experiment consisted of two factors: Factor A: three types of
variety viz. V
1
= Red Star F
1
; V
2
= Sweet Charlie F
1
; V
3
= Thai Pink Egg and Factor B: Four
doses of calcium fertilizer viz. C
1
= 0 ppm; C
2
= 40 ppm; C
3
= 80 ppm; C
4
= 120 ppm. There were
12 treatment combinations and experiment was setup in Completely Randomized Design (CRD)
with three replications. In case of varieties, the highest plant height at 60 DAT (255.32 cm),
maximum branch number per plant (4.58) at 60 DAT, maximum chlorophyll content (75.71 %)
at 75 DAT, minimum days required for first flowering (27.67 DAT) and first fruiting (36.33
DAT), maximum flower cluster per plant (30.83), maximum fruit number per plant (284.56),
highest single fruit weight (10.52 g), highest amount of TSS (8.90 degrees Brix) and yield per
plant (2.94 kg) were obtained from V
2
treatment. Similarly, in case of calcium fertilizer, the
highest plant height at 60 DAT (233.92 cm), maximum branch number per plant (4.78) at 60
DAT, maximum chlorophyll content (81.53 %) at 75 DAT, minimum days required for first
flowering (25.33 DAT) and first fruiting (33.89 DAT), maximum flower cluster per plant
(35.28), maximum fruit number per plant (292.77), highest single fruit weight (11.61 g), highest
amount of TSS (8.96 degrees Brix) and yield per plant (3.32 kg) were obtained from C
2
treatment. In combined effect, the highest plant height at 60 DAT (273.33 cm), maximum
branch number per plant (5.67) at 60 DAT, maximum chlorophyll content (86.77 %) at 75 DAT,
minimum days required for first flowering (24.00 DAT) and first fruiting (32.00 DAT),
maximum flower cluster per plant (36.67), maximum fruit number per plant (362.02), highest
single fruit weight (13.33 g), highest amount of TSS (9.47 degrees Brix) and yield per plant
(4.34 kg) were obtained from V
2
C
2
treatment. Among the treatment combination, V
2
(Sweet
Charlie F
1
variety with 40 ppm Ca) treatment seemed to be more promising for obtaining higher
yield of cherry tomato
Potassium Ions Decrease Mitochondrial Matrix pH: Implications for ATP Production and Reactive Oxygen Species Generation
No full textPotassium (K+) is the most abundant cation in the cytosol and is maintained at high concentrations within the mitochondrial matrix through potassium channels. However, many effects of K+ at such high concentrations on mitochondria and the underlying mechanisms remain unclear. This study aims to elucidate these effects and mechanisms by employing fluorescence imaging techniques to distinguish and precisely measure signals inside and outside the mitochondria. We stained the mitochondrial matrix with fluorescent dyes sensitive to K+, pH, reactive oxygen species (ROS), and membrane potential in plasma membrane-permeabilized C6 cells and isolated mitochondria from C6 cells. Fluorescence microscopy facilitated the accurate measurement of fluorescence intensity inside and outside the matrix. Increasing extramitochondrial K+ concentration from 2 mM to 127 mM led to a reduction in matrix pH and a decrease in the generation of highly reactive ROS. In addition, elevated K+ levels electrically polarized the inner membrane of the mitochondria and promoted efficient ATP synthesis via FoF1-ATPase. Introducing protons (H+) into the matrix through phosphate addition led to further mitochondrial polarization, and this effect was more pronounced in the presence of K+. K+ at high concentrations, reaching sub-hundred millimolar levels, increased H+ concentration within the matrix, suppressing ROS generation and boosting ATP synthesis. Although this study does not elucidate the role of specific types of potassium channels in mitochondria, it does suggest that mitochondrial K+ plays a beneficial role in maintaining cellular health
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
