1,721,038 research outputs found
Development and oviposition preferences of field collected Aedes albopictus based on different water characteristics
No full textAedes species are rapidly adapting to environmental changes which subsequently changing the
preferences for their breeding. In the present study, evaluation of the larval development and
oviposition preferences of field collected Aedes albopictus was carried out based on different water
characteristic. The eggs of Ae. albopictus and the water samples were collected in UiTM Puncak
Alam areas. The types of water samples used in this study were (i) distilled water (WT1), (ii)
seasoned tap water (WT2), (iii) pond water (WT3), and (iv) drain water (WT4). Each types of water
was sampled and tested by controlling the presence and absence of larvae food in the experiment.
Development of immature stages in pond and drain water with the presence of food showed fast
growth compared to the other types of water. Hatching rate was observed to be higher in all types of
water with the presence of food. Oviposition preferences showed a significant difference between
water. The data generated from this study was important as a baseline data in development and
oviposition for dengue vector control especially on the possibility and ability of Ae. albopictus to
survive in specific water types as breeding sites
Biology characteristics of Aedes albopictus (Diptera: Culicidae) in Central Zones of Shah Alam, Selangor
No full textAedes sp. mosquitoes are the known vectors of dengue fever. The factors influencing the continuous occurrence of dengue fever have not yet been studied or fully understood. Therefore, this study was designed to assess the demographic parameter of Aedes albopictus (Diptera: Culicidae) in terms of their development, survival, and reproduction in Central Zone of Shah Alam. The study was conducted through ovitrap surveillance and mosquito rearing method. A total of 570 ovitraps were placed in nineteen (n=19) localities in the Central Zone of Shah Alam. Positive Ovitrap Index (POI) and mean eggs per trap (MET) was used to identify the infestation profile of dengue vectors in a locality. The biology and demographic parameters of dengue vector, such as development rate, survivorship and mortality rate were observed for each locality. Section 18 (POI: 73.3, MET: 35.05) was one of the localities that has high distribution and abundance of dengue vector. It was found that Section 24 was the locality with high development rate, high survivorship, and low mortality rate. These parameters were then used to formulate a life table for Aedes species mosquitoes in Central Zone of Shah Alam. As a conclusion life table analysis can be used to estimate the life cycle of the dengue vector. However, in-depth studies on the life table analysis need to be done in order to gain more understanding and so that authorized parties could plan for proper action to be taken
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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