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Ecological Moderators of the Relation Between Neighborhood Safety and Physical Activity
Get PDFObjective: Targeting neighborhood characteristics (e.g., pedestrian infrastructure) is a promising mechanism to increase physical activity (PA). However, the association with neighborhood safety and PA is unclear. An ecological approach, which considers multiple levels of influence, may help clarify the association. The current dissertation bridged the PA and injury prevention fields by assessing multilevel moderators of the association between neighborhood safety and PA.Methods: The three samples were overweight/obese adults from San Diego, CA (Study 1, n=298), adolescents from Seattle, WA and Baltimore, MD (Study 2, n=878) and older adults from Seattle, WA (Study 3, n=367). The PA outcomes were self-reported active transport and leisure-time PA, and objective moderate-to-vigorous PA (MVPA). Study 1 assessed perceived neighborhood safety (e.g., safety from crime, pedestrian safety). Studies 2 and 3 assessed objectively-measured pedestrian streetscape safety. Moderators were from individual/demographic, psychosocial, home and neighborhood environment levels. Results: Fifteen of the 17 significant (p<.10) moderators found across studies were from individual/demographic or psychosocial levels. Though some moderators were shared across outcomes within the same study (e.g., sex and BMI in Study 1 or barriers in Study 2), race/ethnicity was the only significant moderator across studies (Studies 1 & 2). White non-Hispanic participants benefitted most in safe vs. unsafe neighborhoods, but there were few benefits among minorities. In Studies 2 & 3, the utility of the new objective streetscape safety measure was demonstrated. It was significantly positively associated with neighborhood-based PA among older adults, but negatively associated among adolescents. Conclusion: The association of neighborhood safety with PA was complex and varied by subgroup. The findings demonstrate the utility of an ecological approach to better understand PA, particularly exploring cross-level interactions. Both perceived and objectively-assessed neighborhood safety had subgroup-specific effects, suggesting each age-group should be targeted separately (e.g., targeting pedestrian safety for older adults). More research is needed that incorporates objectively-assessed pedestrian safety, and interventions should tailor based on individual/demographic and psychosocial characteristics. Interventions can modify safety-related streetscape characteristics to reduce or eliminate traffic-related fatalities and injuries among pedestrians, and may have a dual benefit of facilitating greater physical activity in neighborhoods
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
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
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
Growing evidence that physical activity-supportive neighbourhoods can mitigate infectious and non-communicable diseases
No full textIn the early stages of the COVID-19 pandemic, dubious assertions that population density increased spread of the virus led to premature and dangerous recommendations promoting suburban sprawl. In 2020, we published a commentary in Cities & Health to refute these recommendations. We hypothesized that features of activity-supportive environments, including high density, would be protective from severe COVID-19 outcomes. The goal of the present commentary is to examine evidence that has emerged during the pandemic to evaluate veracity of the predictions and recommendations we made in 2020. An updated analysis of cities from each continent supports our 2020 analysis that population density is not associated with COVID-19 mortality. Our earlier recommendations to promote activity-supportive environments to benefit both infectious and non-communicable diseases, and to ensure equity of access to such environments, are now supported by empirical studies. Evidence related to public transport shows mitigation of risk could be achieved by limiting riders, travelling during off-peak hours, enforcing physical distancing, requiring face coverings, and implementing strict cleaning protocols. There is substantial evidence that environmental features and interventions that support COVID-19 mitigation strategies also have additional health, environmental sustainability, and economic benefits.Urban Studie
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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