1,720,954 research outputs found
On the Paleontology of Belize
No full textPaleontology can be considered an underrepresented and emerging area of science in Belize. A primary aim of this thesis is to provide a background of paleontology in Belize and present the first comprehensive study of Quaternary vertebrate fossils known from the country. Quaternary fossil sites across Belize include caves, rivers, and sinkholes. In addition to reviewing and assessing material from known sites, this thesis presents new information and discoveries that were made while investigating Belize’s Quaternary fossil record. This thesis also includes a geospatial model depicting ecoregions in Belize during the last glacial maximum. Overall, the results presented here demonstrate why fossils from Belize are an essential part of the country’s geoheritage. Furthermore, Belize’s fossil record provides reliable documentation of the ongoing natural changes in ecosystems and ecology in the country. This thesis concludes by discussing the universal value of protecting paleontological resources from a Belizean context
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
Vertebrate Paleontology of Pleistocene Sites in Belize
No full textPreliminary findings from this study serve as a review of paleontological research conducted in Belize. By highlighting the paleontological findings from this country and the contributions scientists have made thus far, fundamental gaps in knowledge become apparent. The earliest use of paleontology in Belize is documented as early as 1952 during the first industrial oil explorations of British Honduras (Belize). Geologic surveys conducted at the time relied on the fossils found across the country to estimate the age of geological formations. In the 2000s and 2010s archaeologists and cavers working in Belize came across fossils of extinct Pleistocene species that have led to remarkable scientific discoveries. There are approximately 14 locations known to produce Pleistocene fossils in Belize so far. These sites include caves, sink holes, rivers, and gravel pits. The location and current state of some of these sites are presently understudied. Therefore, revisiting each location to photograph, map, and document the geology associated with the fossils is requisite. At least 27 vertebrate taxa across 12 families are known thus far, the majority of which are presently extinct or extirpated. The current knowledge on the fossils of Belize is drawn from inferences using regional information and smaller well studied areas of the country. It is expected that the fossil record in Belize could potentially yield similar fossil taxa that have been found in other parts of Central America and southern Mexico. Expected taxa not yet found in Belize include Canidae and Toxodontidae. Microfossil studies haven’t been conducted yet and will likely produce fossils from various small mammals, birds, reptiles, amphibians, and fish. The results from this study describe the substantial on-going natural processes in the changes of ecosystems and the ecology of species in Belize. Furthermore, this research demonstrates the universal value of protecting sites containing fossils from the point of view of conservation paleobiology. As paleontology continues to develop in Belize, these new and exciting findings can help to enhance Belize’s understating and awareness of the Earth’s natural heritage. Connecting humans to the past through natural history can be used as a catalyst for improving Belizean led initiatives to safe guard paleontological resources through policy and public engagement
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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