1,721,115 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
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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Evaluation of carbon based interconnects for digital signalling in printed flexible electronics on sustainable substrates
No full textPrinted electronics using flexible substrates are an emerging area, allowing next generation electronics that can conform and flex with different surfaces, from human skin to in clothing. In the hybrid integration, or sea-of-rigids approach, conventional microchips are mounted onto (generally) plastic substrates such as polyethylene naphthalate (PEN), with (typically) printed silver tracks for interconnections between components. An ongoing research direction is to replace plastic substrates with biodegradable substrates, and to replace silver tracks with non-heavy metal-based tracks. While the substrates and tracks form only part of any overall system, replacing them is a step towards increased sustainability and helps to meet net-zero goals for printed electronic systems. Previously,
several papers have investigated printed carbon tracks for lowfrequency analog sensing applications. This paper explores the feasibility of using printed carbon tracks on biodegradable substrates for high-frequency sensing applications such as digital signaling over a Serial-Peripheral Interface (SPI). We investigate the printability, thermal stability, and electrical conductivity
of carbon ink screen-printed onto six commercially available sustainable and flexible substrates. This includes modeling the connection formed and testing with SPI communications over a range of clock frequencies.We explore multi-layer screen printing to reduce the electrical resistance of the carbon tracks enabling their use in high-frequency SPI communication. This method was evaluated successfully in a custom experimental setup composed of two digital electronic systems connected through a carbonbased flexible connector. Connectors made through two layers of carbon prints allowed short distance SPI communication at a clock frequency of 1 MHz. Connectors of three or more carbon prints allowed SPI communication at clock frequencies up to 16 MHz. The Natureflex™ substrate showed the best overall trade-off in printing versus electronic performance among the sustainable substrates. The results of this study provide guidelines for materials selection and device fabrication for printing onto emerging biodegradable substrates to be used effectively in digital electronic systems.</p
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Longitudinal assessment of seasonal impacts and depression associations on circadian rhythm using multimodal wearable sensing: retrospective analysis
No full textBackground: Previous mobile health (mHealth) studies have revealed significant links between depression and circadian rhythm features measured via wearables. However, the comprehensive impact of seasonal variations was not fully considered in these studies, potentially biasing interpretations in real-world settings.Objective: This study aims to explore the associations between depression severity and wearable measured circadian rhythms while accounting for seasonal impacts.Methods: Data were sourced from a large longitudinal mHealth study, wherein participants' depression severity was assessed biweekly using the 8-item Patient Health Questionnaire (PHQ-8), and participants' behaviors, including sleep, step count, and heart rate (HR), were tracked via Fitbit devices for up to two years. We extracted 12 circadian rhythm features from the 14-day Fitbit data preceding each PHQ-8 assessment, including cosinor variables, such as HR peak timing (HR Acrophase), and nonparametric features, such as the onset of the most active continuous 10- hour period (M10 onset). To investigate the association between depression severity and circadian rhythms while also assessing the seasonal impacts, we employed three nested linear mixed-effects models for each circadian rhythm feature: (1) incorporating the PHQ-8 score as an independent variable; (2) adding seasonality; and (3) adding an interaction term between season and the PHQ-8 score. Results: Analyzing 10,018 PHQ-8 records alongside Fitbit data from 543 participants (76.2% female, median age 48 years [IQR: 32-58]), we found that after adjusting for seasonal effects, higher PHQ-8 scores were associated with reduced daily steps (β = -93.61, P Conclusions: Our findings highlight significant seasonal influences on human circadian rhythms and their associations with depression, underscoring the importance of considering seasonal variations in mHealth research for real-world applications. This study also indicates the potential of wearable-measured circadian rhythms as digital biomarkers for depression.</p
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Understanding the thoughts and preferences of older adults for technologies designed to detect feelings of loneliness: a qualitative study
No full textBackground: Loneliness is a negative emotional state which is common in later life. The accumulative effects of loneliness have significant impact on physical and mental health of older adults. Automatic methods for detection and prediction are an emerging field to support early identification of loneliness. Objectives: We aim to qualitatively explore the thoughts and preferences of people aged 65 and over regarding technologies to detect feelings of loneliness in later life. Methods: We conducted 60 semi-structured interviews with people aged 65 and over between September 2022 and August 2023. Data were analysed using a reflective thematic approach on NVIVO software. Results: Three themes were identified representing what older adults considered important in a system able to detect loneliness. 1) Interest and Control of Data, which was a priority for older adults; 2) Perceived Usefulness to Address Loneliness, which related to the importance of providing recommendations to reduce feelings of loneliness after detection; and 3) Personalisation as a Priority, which included the level of loneliness for which an alert was sent and selection of relevant individuals who would be sent a loneliness alert. Conclusion: Findings from this in-depth qualitative study provide important perspectives from people with lived-experience of loneliness on the context in which a sensor-based loneliness detection system would be most useful and acceptable to older adults. Future research will include such perspectives in the design of innovative technologies enabling the early detection of loneliness and access to timely interventions to tackle loneliness in later life.</p
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