1,720,962 research outputs found
Background Data for Calanus helgolandicus - more than a guest in the north?
No full textTime series data.
Stage specific abundance of Calanus helgolandicus in the depth ranges 0-50-200-500 mbs, sampled monthly from June 2017 to June 2018.
The Dataset contains conductivity, temperature, depth (CTD) data with every sampling event.
Species determination by genotype.
Sampling gear: Hydrobios Multinet 200 um mesh size.
This time series is part of a project mapping four sympatric Calanus species in Skjerstadfjord, Northern Norway. Abundance data for other Calanus species will be published in its own dataset.
Results from the dataset: Abundance data for each stage og Calanus helgolandicus at the depth ranges: surface (0-50 mbs), middel layer (50-200 mbs), and deep layer (200-500 mbs).
The study based on this data provide strong evidence that reproduction is taking place in the Skjerstadfjord, North of the Arctic Circle.<p/
Background data for Income and Capital breeding - Calanus reproduction in a subarctic fjord
No full textHigh temporal resolution timeseries, containing lipid data and observation data for four Calanus species in Skjerstadfjord from June 2019 to December 2020.
Aim
Mapping the lipid content for sympatric Calanus species during the year.
Calanus species
C. hyperboreus, C. glacialis, C. finmarchicus, and C. helgolandicus
Location
Skjerstadfjord, Northern Norway
Location depth
543 meters below surface (mbs)
Sampling
Copepodite samples collected using a HydroBios Multinet with a 200 µm mesh size (depth ranges 500-300-200-100-50-0 mbs).
Nauplii samples collected using a WP2-net with a 50 µm mesh size (depth range 50-0 mbs).
CTD (Salinity, Temperature, Depth) data collected with every multinet sample
Data
Species determination
Genetic analysis (C. glacialis, C. finmarchicus, and C. helgolandicus)
Morphology (C. hyperboreus)
Genetic analysis (nauplii all species)
Total lipid content and prosome length
Lipid sack size and prosome length analysis from photographs
Observations
Food ingested, parasites, gonad maturation stag, sperm pouch.
Details
At each sampling event, one sample was collected from each depth range.
From each sample, up to 20 live specimens of each stage were collected at random. The live specimens were photographed for measurements and observations. The specimens were then preserved in ethanol.
Specimens that were not morphologically identified as Calanus hyperboreus (determined by prosome length) were genetically identified.
Genetical species determination were only carried out for stages CF (adult females) and CM (adult males).
Physical samples are stored at Nord university.
Results from the dataset
A running mean of total lipid per specimen, and temporal presence related to observation data and nauplii for each species in stage CF (adult female).
The study based on this data provide strong evidence of C. hyperboreus and C. glacialis acting as capital breeders and C. finmarchicus acting as an income breeder
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
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