1,721,420 research outputs found
Accelerometer Level Dataset: Observational Studies of Adults with Accelerometry Measured Physical Activity and Sedentary Behavior through June 1, 2021
No full textWe conducted a systematic scoping review to identify observational studies of adults that collected accelerometry-assessed physical activity or sedentary behavior from papers published through June 1, 2021. This accelerometer level dataset provides a listing of each accelerometer and protocol characteristics for the studies. A separate cohort level dataset is available.The two datasets can be linked by the variable IDCOHORT
Cohort Level Dataset: Observational Studies of Adults with Accelerometry Measured Physical Activity and Sedentary Behavior through June 1, 2021
No full textWe conducted a systematic scoping review to identify observational studies of adults that collected accelerometry assessed physical activity or sedentary behavior from studies published through June 1, 2021. This cohort level dataset provides a listing of each study identified from the search. A separate accelerometer level dataset is available. The two datasets can be linked by the variable IDCOHORT
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Launching online education for 911 telecommunicators and EMS personnel: Experiences from the North Carolina rapid response to stroke project
No full textObjective. We describe the development and implementation of the North Carolina Rapid Response to Stroke (NCRRS) project—a community-based online education project developed for 911 telecommunicators and EMS personnel. Methods. Two online courses, one for 911 telecommunicators and one for EMS personnel, were designed to provide timely and accessible continuing education on stroke assessment and care. Eight county-based emergency management systems, representing 15 agencies, were recruited for participation in a 4-month trial of the online courses in 2003. A total of 150 telecommunicators and 208 EMS personnel completed the courses. Results. Results showed high levels of participant satisfaction with the program and improvements in posttest scores; agency leaders also provided positive feedback on the project. Motivators to complete the education identified by participants included peers, agency support, and materials provided by the NCRRS project. Courses were revised on the basis of feedback and successfully sustained online through August 2006, providing free stroke education for almost 1,000 additional 911 telecommunicators and EMS personnel in North Carolina. Conclusions. We describe the process of development and implementation that ensured project success. The results of this study show the need for and value of online stroke education for emergency services personnel and describe the challenges of developing and implementing online continuing education for this population. Similar education programs should be developed. Programs should incorporate comprehensive recruitment programs and community-based networks that sustain interest and promote full participation in educational offerings
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Sedentary behavior and physical activity: risk factors associated with modern lifestyles
Get PDFThis dissertation explores two diametrically opposed behavioral risk factors. The first risk factor, television watching, is the most prevalent leisure activity in the United States. The second, physical activity, is one of the most important modifiable risk factors for chronic disease. The first aim was to examine the association of television watching with physical activity and diet in the Atherosclerosis Risk in Communities Study. Television exposure, physical activity, and dietary information were collected via self-report at baseline and six years later in 12,678 men and women ages 45 to 64 years at baseline. Participants who reported high television exposure were more likely to be inactive and have a poor dietary profile. These results persisted over the six years of follow-up, regardless of modeling strategy. Risks associated with sedentary behaviors, such as television watching, have been neglected in public health research. This work highlights the need for further research on measurement, determinants, and risks of sedentary behaviors. A better understanding of behavioral risk factors such as physical activity requires continued research on current questionnaires and measurement tools used to quantify these behaviors. The test-retest reliability of the Women's Health Initiative physical activity questionnaire was examined in 1092 women as part of the second aim. Mild physical activity had lower test-retest reliability than moderate, vigorous, and walking physical activity, which were moderately to substantially reliable. Walking is the most common leisure physical activity engaged in by adult women. The Women's Health Initiative, with its reliable and unique questionnaire offered an opportunity to examine the independent effects of walking intensity, frequency, and duration on risk of coronary heart disease. After a decade of follow-up, baseline intensity, frequency, and duration of walking were all associated with lower risk of coronary heart disease in 71, 502 women from 40 centers across the United States. The highest category of walking intensity was associated with a 60% reduction in risk relative to the lowest category. Weaker associations were observed for frequency and duration of walking. To untangle the effect of each walking component (i.e., intensity, frequency, and duration) from their contribution to energy expenditure, a control variable estimating recreational physical activity energy expenditure was introduced in the models. The addition of this control variable did not appreciably change the results. Strengths and limitations of this approach are highlighted. This dissertation highlights several areas for future research in physical activity epidemiology. The first is a pressing need to better understand the impact of sedentary behaviors on health. The second is the need to develop better measurement tools for research and surveillance. Lastly, new epidemiologic methods need to be applied to help understand the specific health benefits from different types of physical activities or components of activity, such as frequency, intensity, and duration
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