1,720,969 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
FORMULASI VANISHING CREAM MINYAK ATSIRI RIMPANG JAHE (Zingiber officinale Roxb) DAN UJI AKTIVITAS REPELAN TERHADAP NYAMUK Aedes aegypti BETINA
Full text linkThe essential oil of Ginger rhizome is a natural subtance which has been proved
to have a repellent effect to the mosquito. The aim of this study was to know the effect of
this subtance/these substances in vanishing cream dosage forms as repellant to the
female Aedes aegypti mosquito. The essential oil of Ginger rhizome was isolated with
aqueous vapor destillation. Then the result was determined for its physical properties,
these were: viscosity, adhesivity, spreadibility and its repellant effect to mosquito as
well. The vanishing cream formulation, containing variation of the essential oil
concentration were prepared, these were: FI (formulation I), FII, FIII, FIV and FV,
containing 6,25%, 12,5%, 15%, 20% and 25% of the essential oil respectivity. Each
formulas were tested for their physical properties were viscosity, adhesivity,
spreadibility and its repellant effect to mosquito as well. The datas were analyzed.
Statistically using SPSS version 16 with Kolmogorov-Smirnov and continued with the
t-test (Mann-Whitney) (=0,05). The result showed that the duration of the adhesivity
of FI was the longest than the others (1,37±0,15 minutes); the spreadibility of the FI
was widest (71,69±1,76 mm2
), and the viscosity was the largert than others (27±0 cps).
The repellant capasity of the FV was the longest than the others (47,3±1,80 minutes)
FORMULASI VANISHING CREAM MINYAK ATSIRI SERE (Cymbopogon citratus (DC) Stapf) DAN UJI SIFAT FISIKNYA SERTA UJI AKTIVITAS REPELAN TERHADAP NYAMUK Aedes aegypti BETINA
Full text linkEssential oil of sere leaf has been proven as repellant against mosquitoes. This
research aims to know about the influence of concentration sere essential oil
(Cymbopogon citratus (DC) Stapf) in a vanishing cream bases to physical properties
and repellant testing against female Aedes aegypti mosquitoes. Essential oil of sere
(Cymbopogon citratus (DC) Stapf) was isolated with steam water distillation and was
evaluated the organoleptic appearance and refraction index. Furthermore, the
essential oils were formulated in a vanishing cream base with the different formulas,
contain formula I: 20% v/w; formula II: 30% v/ w and formula III: 40% v / w. Then this
three formulas were evaluated for physical properties including adhesive, dispersive
and the repellent activity testing against female Aedes aegypti mosquitoes amount of
twenty mosquitoes per cage while seven female volunteers as the probandus. The data
have been analyzed using Kolmogorov-Smirnov test and t-test (Main-Whitney), with
95% signifancy level. The results were obtained that the adhesion of formula I: 0.90 ±
0.029 seconds, formula II: 0.60 ± 0.017 seconds, formula III: 0.46 ± 0.040 seconds,
while the dispersion of formula I is 64.89 ± 4.559 cm2
, the formula II is 64.71 ± 4.600 cm
2 and the formula III is 54.96 ± 14.783 cm 2
. The longest time repellent was formula III
showed 3014.2 ± 20.163 seconds or 50.23 minutes. It was concluded that the increase of
concentration essential oils of sere leaf followed by the increase of repellant activity
PERBANDINGAN AKTIVITAS REPELAN ANTARA KRIM MINYAK ATSIRI JAHE (Zingiber offinale, Roxb) DENGAN KRIM MINYAK ATSIRI SERE (Cymbopogon citratus (D.C) Stapf) TERHADAP NYAMUK Aedes aegypti BETINA
Full text linkThe one efforts to prevent dengue fever is to prevent mosquito bites by using mosquito
repellent preparations. The nature of the toxicity of synthetic repellent be the reason for the
research came from the plant. Sere and ginger into one of mosquito repellent plant because it
contains of natural essential oils are many. The aim of this study was to determine the comparative
ability repelan effects of essential oils cream sere (Cymbopogon citratus (DC) Stapf) and ginger
(Zingiber officinale Roxb). The essential oil of sere (Cymbopogon citratus (DC) Stapf and ginger
(Zingiber officinale Roxb), obtained by isolation of leaves and rhizome by steam distillation of
water which is then tested physical properties including test of adhesion, test of spreadability and
test of mosquito repellent activities. The test of mosquito repellent activities using 20 birds Aedes
aegypti mosquito female per cage with the using hand of women as volunteers as much as 4
people. In this study were divided into sixth formulas of test. The sixth of cream formula with
variations in the concentration of essential oils sere and ginger wherein the formula I, II and III
contain essential oils sere as much as 20% v/w; 30% v/ w and 40% v/w, whereas for formula IV; V;
and VI contain the essential oil of ginger as much as 6.25% v/w; 12.5% v/w and 25% v/w. Data of
physical properties test were analyzed statistically using SPSS. The results showed the cream with
the concentration of essential oils sere 40% v/w (FIII) have better outcomes than others formulas
cream, where than of adhesion test is 0.46 ± 0.04 seconds; of the spreadibility test is 56.32 ± 14.78
cm2 and repellent effect of 3014.2 ± 20.16 seconds
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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