1,720,969 research outputs found
Working in a Team: Development of a Device for Water Hardness Sensing Based on an Arduino-Nanoparticle System
No full textThis work describes a two-year project carried out in an Italian technical high school. Through integrated work, the activity involved the efforts of different teachers and students, particularly those in the Chemical, Electronic, and IT departments. They merged their complementary skills to create an inexpensive device that quickly measures water hardness. The pedagogical aspect of this work aimed to support and reinforce development of the key competences for lifelong learning recommended by the European Commission, especially by strengthening the logical-mathematical, digital, and social skills of the students. The device made is based on an Arduino board connected to a red LED and an optical sensor. The device is able to read the intensity of light transmitted through the sample and to independently convert this output into the water hardness expressed in French degrees. The color change used as information transducer is due to the aggregation of negative gold nanoparticles induced by the bivalent cations in solution. Working in school laboratories under teacher supervision, students connected and troubleshot the hardware system, synthesized and characterized the gold nanoparticles, and developed the software. Finally, the system was assembled inside a box composed of a rigid container, a sample holder, and a touchscreen display. Instructions for replicating this instrument are reported in the paper, while further details and explanations for instructors and students are provided in the Supporting Information
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
Identifying and analyzing extremely productive authors in intensive care medicine: A scientometric analysis
Full text linkIntroduction: Clinical progress relies heavily on research, however, recent years have seen distortions in this process due to the “publish or perish” model. This model is further amplified by team science, leading to inflated author counts and metrics. Recently the rise of hyperprolific (HA) and almost hyperprolific (AHA) authors has been highlighted in the global literature scenario, but data on intensive care medicine (ICM) is lacking. This study aims to investigate HA and AHA authors in ICM and the impact of COVID-19 pandemic on publication rates. Material and methods: We identified authors publishing in ICM journals indexed by Scopus from 2019 to 2023, retrieving their Scopus IDs, publication details, and gender. HA were defined as authors who published at least 73 articles per year, while AHA as authors who published more than 60. The effect of COVID-19 literature was assessed by excluding COVID-related articles from the dataset. Results: We identified 42860 articles in ICM journals, involving 186150 unique authors with a median of 5 publications per author. Only 248 (0.1 %) were extremely productive, with 131 being hyperprolific (HA). Removing COVID-19 papers significantly reduced HA and AHA counts by up to 40 %. Extremely productive authors were predominantly male (91.5 %) and globally distributed, primarily from Europe, Asia, and the Americas. Conclusions: Hyperprolific authors in ICM represent a very small minority. These authors are typically related to ICM, male, senior researchers with a global distribution, who publish high-quality research through a significant research network
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
Correction to: Patients in intensive care unit for COVID-19 pneumonia: the lung ultrasound patterns at admission and discharge. An observational pilot study (The Ultrasound Journal, (2021), 13, 1, (10), 10.1186/s13089-021-00213-x)
No full textFollowing publication of the original article [1], we were notified that the first and last author names have been swapped. The original article has been corrected
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