1,721,050 research outputs found
Raw data of physical oceanography during RV HEINCKE cruise HE449
No full textRaw physical oceanography data was acquired by a ship-based Seabird SBE911plus CTD-Rosette system onboard RV HEINCKE. The CTD was equipped with duplicate sensors for temperature (SBE3plus) and conductivity (SBE4) as well as one sensor for oxygen (SBE43). Additional sensors such as a WET Labs C-Star transmissometer, a WET Labs ECO-AFL fluorometer (FLRTD) and an altimeter (Teledyne Benthos PSA-916) were mounted to the CTD. The data was recorded using pre-cruise calibration coefficients. No correction, post-cruise calibration or quality control was applied. Processed profile data are available via the link below
Methane concentration and aerobic methane oxidation rate measured during RV Sonne cruise SO266 offshore SW Taiwan
No full textMethane concentrations of discrete water samples were analyzed using the batch mode of a Greenhouse Gas Analyzer (GGA, Los Gatos Research) following the procedure described by Geprägs (2016). Methane oxidation rate (MOx) measurements were implemented as described by Bussmann et al. (2015) and Mau et al. (2013).
Bussmann, I., Matousu, A., Osudar, R., and Mau, S. (2015). Assessment of the radio 3H-CH4 tracer technique to measure aerobic methane oxidation in the water column. Limnol. Oceanogr. Meth. 13, 312-327.
Geprägs, P. (2016). Methane environment around cold seeps - examples from Antarctica and the Mediterranean. doctoral thesis, University of Bremen.
Mau, S., Blees, J., Helmke, E., Niemann, H., and Damm, E. (2013). Vertical distribution of methane oxidation and methanotrophic response to elevated methane concentrations in stratified waters of the Arctic fjord Storfjorden (Svalbard, Norway). Biogeosciences 10, 6267-6278
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
Physical oceanography measured on water bottle samples during RV Sonne cruise SO266
No full textOceanographic and biochemical data obtained during cruise SO266 from 15.10.2018 to 18.11.2018 from Kaohsiung (Taiwan) to Kaohsiung (Taiwan) . A Seabird CTD Model 9plus recorded oceanographic data. The CTD comprised conductivity, temperature, and pressure sensors as well as a SBE 43 oxygen sensor and a WET labs ECO FLNTURTD fluorometer and turbidity sensor. According to the manufacturers, the accuracy of the conductivity, temperature, pressure, and oxygen was ± 0.0003 S m-1, ± 0.0002 °C, ± 0.02%, and ± 2% of saturation, respectively. The difference between the two salinity and temperature sensors were 0.0069 and 0.0010 °C, respectively. The WETLabs FLNTU measured chlorophyll fluorescence (ChlF, λ excitation=470 nm, λ emission=695 nm) with a sensitivity of 0.025 µg l-1
Physical oceanography at CTD stations of RV Sonne cruise SO266
No full textOceanographic and biochemical data obtained during cruise SO266 from 15.10.2018 to 18.11.2018 from Kaohsiung (Taiwan) to Kaohsiung (Taiwan) . A Seabird CTD Model 9plus recorded oceanographic data. The CTD comprised conductivity, temperature, and pressure sensors as well as a SBE 43 oxygen sensor and a WET labs ECO FLNTURTD fluorometer and turbidity sensor. According to the manufacturers, the accuracy of the conductivity, temperature, pressure, and oxygen was ± 0.0003 S m-1, ± 0.0002 °C, ± 0.02%, and ± 2% of saturation, respectively. The difference between the two salinity and temperature sensors were 0.0069 and 0.0010 °C, respectively. The WETLabs FLNTU measured chlorophyll fluorescence (ChlF, λ excitation=470 nm, λ emission=695 nm) with a sensitivity of 0.025 µg l-1
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
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