1,720,955 research outputs found
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
Reflectance spectra of submerged aquatic vegetation (SAV) species and substrates from the Baltic Sea coastal waters
No full textThis project measured spectral reflectance for variety of submerged aquatic vegetation (SAV) species and bare substrate types found in Estonia and Swedish coastal waters in the Baltic Sea. The dataset was collected between 2011-2012 during various field campaigns. Target samples were measured within the 350 to 900 nm wavelength range under sun light conditions using Ramses (TriOS GmbH, Germany) measurement set, which consisted of two simultaneously operated sensors: irradiance and radiance sensors. The radiance sensor measured upwelling spectral radiance Lu (W m-2 nm-1 sr-1) and irradiance sensor measured downwelling spectral irradiance Ed (W m-2 nm-1). Remote sensing reflectance (Rrs) was calculated as the ratio of Lu/Ed (sr-1). All target samples were taken out of the water before the measurement
Carbon fractions (TOC, DOC, DIC) measured from coastal waters of the Baltic Sea in 2023–2024
No full textThis dataset contains in situ measurements of carbon fractions—Dissolved Inorganic Carbon (DIC), Dissolved Organic Carbon (DOC), and Total Organic Carbon (TOC). In 2023 and 2024, we collected data from the coastal waters of the northern Baltic Sea in the frame of seasonal field campaigns. These campaigns were timed to capture a variety of biogeochemical and environmental conditions. The collected data provide insights into the distribution of organic and inorganic carbon in coastal waters, supporting applications such as marine carbon budget assessments, climate change research, and coastal ecosystem studies, as well as the validation of satellite-derived products and the improvement of coastal biogeochemical models in optically complex waters like the Baltic Sea. Water samples were collected from surface waters from various locations, and all carbon fraction analyses were conducted in accordance with EVS-EN 1484, and a Vario TOC analyser (Elementar GmbH, Germany) was used. DOC and DIC were measured from 0.45 µm filtered samples
Spectral reflectance and associated water quality parameters measured from coastal waters of the Baltic Sea in 2023–2024
No full textThe dataset contains in situ measurements of remote sensing reflectance (Rrs, sr⁻¹) and associated water quality parameters like coloured dissolved organic matter absorption (aCDOM), total suspended matter (TSM), suspended particulate inorganic matter (SPIM), suspended particulate organic matter (SPOM), and chlorophyll-a (Chl-a). In 2023 and 2024, we collected data from the coastal waters of the northern Baltic Sea in the frame of seasonal field campaigns. These campaigns were timed to capture a variety of environmental and optical conditions. This dataset can be used, for example, for the development and validation of satellite-based retrieval algorithms, improving our understanding of the optical properties of coastal waters, and studying biogeochemical processes in these complex environments. Water reflectance was measured with two (downwelling spectral irradiance, Ed; upwelling spectral radiance, Lu) Ramses (TriOS GmbH) spectrophotometers. "Glint-free" reflectance measurements were carried out, lowering the plastic tube, which surrounds the regular TriOS Ramses Lu sensor, just below the water surface. These glint-free reflectance values are brought out in the dataset. Water samples collected simultaneously with the optical measurements were analysed in the laboratory. TSM, SPIM, and SPOM were determined using the gravimetric method, in which a water suspension is filtered through a pre-weighed microfibre filter to determine the mass of particles retained on the filter. aCDOM spectra were measured from filtered (0.2 µm) water spectrophotometrically, using Milli-Q water as a reference. Chl-a concentration was determined using a spectrophotometric method based on pigment extraction with acetone and absorbance measurement in the visible range. Each water sample was analysed in two parallel replicates to improve reliability and enable quality control
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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