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Herbarium GB, University of Gothenburg
No full textThis database contains information from Gothenburg herbarium, Herbarium GB. It is a university-wide research infrastructure at the University of Gothenburg in the Department of Biology and Environmental Science.
The collections include about 1 million dried specimens from all corners of the world. The vascular plant collection is dominant and comprises about 750,000 specimens, while the other 250,000 specimens are mosses, algae, fungi, lichens and slime fungi.
The vascular plants contain a rich Nordic material, but also large collections from the Middle East, the Mediterranean and tropical South America. The latter collection reflects the department's more than 50 years of research activities in the region, especially within the Flora of Ecuador project, and which has resulted in the following families being particularly richly represented: Asteraceae, Cyclanthaceae, Heliconiaceae, Marantaceae, Rubiaceae and Scrophulariaceae.
Among the non-vascular plant collections, the mushroom collection is the largest and comprises about 100,000 specimens. This mainly consists of base fungi from Northern Europe, a large part of which are wood-degrading crust and bracket fungi. The herbarium also has collections of Psathyrellaceae, Hygrophoraceae, Lycoperdaceae, Inocybeaceae, Russulales and Boletales.
Assignments of coordinates to many localities are primarily generated through Sweden's Virtual Herbarium workflow (http://herbarium.emg.umu.se/), which includes transformations from Swedish coordinate systems as well as coordinates for centroids representing geographic or political units. The GBIF dataset is harvested from Sweden's Virtual Herbarium after these georeferencing protocols have been applied, indicated for each record in dwc:georeferenceRemarks where the relevant protocol has been documented
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
Dinucleotide degradation by REXO2 maintains promoter specificity in mammalian mitochondria. Nicholls et al.
No full textOriginal image data from Dinucleotide degradation by REXO2 maintains promoter specificity in mammalian mitochondria by Nicholls et al
Topoisomerase 3 alpha is required for decatenation and segregation of human mitochondrial DNA. Nicholls et al.
No full textRaw data from manuscript "Topoisomerase 3a is required for decatenation and segregation of human mitochondrial DNA" by Nicholls et al
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
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