1,720,975 research outputs found
A call for the review of public biodiversity databases
No full textEversole, Cord B., Powell, Randy L. (2023): A call for the review of public biodiversity databases. Zootaxa 5277 (1): 193-194, DOI: 10.11646/zootaxa.5277.1.10, URL: http://dx.doi.org/10.11646/zootaxa.5277.1.1
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
American alligator ecology and management in Texas
No full textThe American alligator (Alligator mississippiensis) was listed as an endangered species in 1967 because of population declines attributable to market hunting, poaching, and the loss of wetland habitat. Subsequently, alligators have been delisted and their recovery is due to intense management and wetland conservation. Statewide management strategies for alligators are based upon data collected from harvested alligator populations. However, because population demographics of alligators are thought to to be affected by several environmental and life history characteristics, a generalized population model and management plan may not be appropriate for the species. Also, little is known about American alligators from Texas. Therefore, my objectives were to 1) identify trends in nuisance alligator reports in the state of Texas by year, month, county, alligator size, sex, situation, and action taken; 2) determine agency priority of nuisance alligator management based on these trends; 3) determine public opinion about alligators and their management; 4) quantify clutch size and hatchling production of wild American Alligator nests in southeastern Texas, and to determine if these parameters are affected by drought; 5) determine retention rates of three commonly used tags and one novel tag and determine the most cost- and time-effective tagging strategies; 6) determine demographic and localized differences alligator growth rates showed that growth differed among size classes. Mean annual growth rates for size classes 1(<50 cm total length; TL), 2 (50.1-100cm TL), and 3 (100.1-150 cm TL) were 30.6 ± 1.2 cm, 12.6 ± 1.5 cm, and 15.7 ± 3.3 cm, respectively. The mean body condition score without regard to size, sex, or density was 2.6 ± 0.05. Age estimates of alligators ≤151 cm (TL) ranged from 0.03 years to 13.64 years of age. Passive Integrated Transponders (PIT) and fish tag retention was 97% and 93%, respectively, in recaptured alligators. Fish tags were 7-18 times faster (i.e., person-minutes) to place on alligators than the other tags. In addition, fish tags were visible without recapture of the alligator, caused less stress on captured individuals, and the cost per tag for fish tags was not considered prohibitive. I recommend fish tags as the primary tagging strategy for alligators. Results of population surveys suggest that subadult and adult alligators are best surveyed at least three hours after dark, but hatchlings can be reliably surveyed anytime during the night. I found that alligator activity and abundance are highly variable among age classes and lakes and that survey techniques should be developed to be age and population specific. Managers and scientists should target particular age classes during surveys based on prevailing environmental conditions because precise monitoring of wildlife populations is crucial for species management and conservation. I recommend that management plans for Texas alligators be developed for each age class and on a per site basis because a ‘one-size fits all’ plan appears inappropriate for this species
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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