1,720,954 research outputs found
Complete Data for: Laboratory evaluation of copper-based algaecides for control of the invasive macroalga starry stonewort (Nitellopsis obtusa)
No full textThe three files include data from the Nitellopsis obtusa thalli and bulbil experiments, and associated water temperature and pH data. Please see the manuscript referenced below for a full description of the study methods and the Read Me file for a full description of the data files.Nitellopsis obtusa ([Desvaux] J. Groves [1919]; Characeae), known as starry stonewort,
is an invasive macroalga in Laurentian Great Lakes states and provinces in North
America. Because of its potential negative impacts on native ecosystems and
recreation, N. obtusa has become a high-priority target for management. However,
there is a critical lack of foundational information on the efficacy of different
algaecides, and concentrations thereof, for N. obtusa control. Additionally, control
of N. obtusa bulbils—asexual reproductive structures that are the main pathway for
the establishment of new plants—has proven difficult. We tested the efficacy of six
commonly used copper-based algaecides, at a series of copper concentrations up to
the maximum labeled rate, on N. obtusa thalli (photosynthetic aboveground tissues)
and bulbils in controlled laboratory experiments. Bulbils were placed above and
below sediment in separate experiments to evaluate whether sediment acted as a barrier
to treatment. The data from these experiments are provided and documented here.Minnesota Environment and Natural Resources Trust FundMinnesota Aquatic Invasive Species Research CenterUSDA National Institute of Food and AgricultureMinnesota Agricultural Experiment Station.Glisson, Wesley J; Contreras-Rangel, Rafael; Bishop, West M; Larkin, Daniel J. (2022). Complete Data for: Laboratory evaluation of copper-based algaecides for control of the invasive macroalga starry stonewort (Nitellopsis obtusa). Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/0CV1-0Z18
Complete Data for: Desiccation tolerance of the invasive alga starry stonewort (Nitellopsis obtusa) as an indicator of overland spread risk
No full textThe files include data from an outdoor Nitellopsis obtusa desiccation experiment conducted in August 2017 and a laboratory desiccation experiment conducted in October 2017. There are separate data files for N. obtusa fragments and bulbils for each experiment. Additionally, compressed folders containing photographs of bulbils from the outdoor (August) experiment and of fragments from the laboratory (October) experiments are included. Please see the manuscript referenced below for a full description of the experimental methods and the Read Me file for a full description of the data files.The ability of invasive macrophytes to survive out of water, i.e., their desiccation tolerance, is an important indicator of capacity for spread to new waterbodies through overland transport. Invasion by the alga starry stonewort (Nitellopsis obtusa [Desv. in Loisel.] J. Groves; Characeae) in North America is likely driven via overland transport, but little is known regarding its ability to remain viable out of water. We conducted laboratory and outdoor experiments to evaluate desiccation tolerance of N. obtusa propagules, including single stem fragments, small and large clumps of fragments, and bulbils (asexual reproductive structures). Propagules were removed from water after 15 min to 5 d to identify desiccation thresholds. The data from these experiments are documented and available here for public availability and use.Minnesota Aquatic Invasive Species Research CenterMinnesota Environment and Natural Resources Trust FundGlisson, Wesley J.; Wagner, Carli K.; Verhoeven, Michael R.; Muthukrishnan, Ranjan; Contreras-Rangel, Rafael; Larkin, Daniel J.. (2021). Complete Data for: Desiccation tolerance of the invasive alga starry stonewort (Nitellopsis obtusa) as an indicator of overland spread risk. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/28th-gy94
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
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
- …
