1,721,186 research outputs found
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Functional androdioecy in the flowering plant Datisca glomerata
Full text linkThis scanned article is provided to correct an error on the publisher’s website. The online version has incorrectly given the first author name as “Listen, Aaron” rather than the correct, “Liston, Aaron.” If using this article, please cite the first author correctly
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
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Applying GIS Analysis to Herbarium Georeferencing
Full text linkIn March 2005 the Oregon State University Herbarium launched its new, free online Oregon Vascular Plant Atlas for public use. This Atlas allows users to access location information from over 385,000 vascular plant specimen and observation records in the state of Oregon. The potential applications of such spatial information are almost limitless; users can examine the spatial relationships between plants and a variety of environmental variables within plant communities (soils, precipitation, elevation etc.). The maintenance and accuracy of this database is therefore critically important in order to provide the highest quality information to Atlas users. Several projects were identified to increase the accuracy and precision of the Plant Atlas spatial data including: (1) correction of points with mismatched township/range and county information, (2) comparison of Oregon State University (OSU) Herbarium and Oregon Natural Heritage Information Center (ORNHIC) georeferencing results, (3) creation of quarter section and quarter-quarter section location names, and (4) analysis of elevation information using digital elevation models. These projects were completed using geographic information system (GIS) software, as well as Microsoft Access data management software. New location names, or LocNames, were created for township/ranges bisected by county lines, increasing the accuracy of the referenced location. LocNames were also created for specimens with quarter section and quarter-quarter section information. These combined projects resulted in the creation of 1,876,587 new location names. Analysis of the ORNHIC and OSU Herbarium georeferencing results showed the majority of points were similarly georeferenced, however, one-third had some quality issue. Finally, the quality of the elevation information stored in the Vascular Plant Atlas database was shown to include potential data entry conflicts between meters and feet, as well as potential georeferencing problems. The results of these projects will help increase the accuracy of georeferenced specimen locations, as well as provide important information to help herbarium staff identify areas of needed quality control
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Conservation and Land Management : Seeds of Success, New Mexico
Full text linkThe Seeds of Success (SOS) is a wildland seed collection program in support of the interagency Native Plant Materials Development Program (NPMP) and in partnership with the global conservation initiative, the Millennium Seed Bank Project of the Royal Botanic Gardens, Kew. SOS collections follow a set protocol with consideration for the optimal genetic diversity of the sample, the future utility of the species, and the sustainability of the current population. These high-quality, well documented seed collections serve a dual purpose; they help land managers in meeting the many restoration, rehabilitation, and revegetation needs of degraded lands across the country and they also serve as ex situ conservation material in national and international seed banks for future research and development and the security of the world’s plant diversity at a time of mass extinction. My five-month internship with the Bureau of Land Management in Las Cruces, New Mexico, initiated the SOS program for the state and resulted in at least thirty-two collections for long-term banking, local restoration, and research and development by the USDA Agricultural Research Service. The future of the NPMP depends on continued support by land managers in addition to partnerships with the commercial seed industry for overcoming the current challenges and economic liabilities of broad scale native plant materials production
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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