1,720,966 research outputs found
A brief history of the International Diatom Symposium
No full textEDLUND, MARK B., ANDRESEN, NORMAN A. (2013): A brief history of the International Diatom Symposium. Phytotaxa 127 (1): 6-9, DOI: 10.11646/phytotaxa.127.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.127.1.
Proceedings of the 21 International Diatom Symposium
No full textJulius, Matthew L., Edlund, Mark B., Julius, Matthew L., Edlund, Mark B., Edlund, Mark B., Andresen, Norman A. (2013): Proceedings of the 21 International Diatom Symposium. Phytotaxa 127 (1): 3-4, DOI: 10.11646/phytotaxa.127.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.127.1.
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
Natural Resources Research Institute Technical Report
No full textTo quantify the environmental history of the southern basin of Lake of the Woods (Ontario,
Manitoba and Minnesota), seven core locations were selected for retrospective analyses. Primary
goals were to determine pre-European settlement conditions and track the timing and extent of
anthropogenic impacts and remediation. Sediments were dated using isotopic analyses and fossil
remains, in concord with other stratigraphic indicators (organic and inorganic materials,
sedimentation rates, other biological entities), were used to reconstruct the ~150-year history of
the lake. Diatom assemblages were assessed from sediment intervals and inferred trophic
conditions in the profiles were derived using a regional diatom-based model for Minnesota lakes.
Nutrient reconstructions indicated a period of cultural eutrophication throughout much of the 20th
century. Despite a known reduction in anthropogenic nutrient flux to the lake in recent decades,
there has been no apparent reversal in eutrophication in the pelagic system. Contemporary
observations indicate that blooms of blue-green algae are becoming a greater problem. It appears
that legacy nutrient recycling and other environmental drivers are maintaining the current
condition of pelagic nutrient enrichment. Sedimentary analyses also indicated that physical
changes to the lake resulting from warming may be contributing in small part to the recent
reorganization of algal assemblages.University of Minnesota Grant Number: 3005 10425 00017805Reavie, Euan D; Edlund, Mark B; Andresen, Norman A; Engstrom, Daniel R. (2015). Paleolimnology of the Lake of the Woods southern basin. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/187352
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
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