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71.
Myles W. O’Brien Jarrett A. Johns Jonathon R. Fowles Derek S. Kimmerly 《Measurement in physical education and exercise science》2020,24(2):147-156
ABSTRACTThe activPAL is a widely-used measure of sedentary time but few studies have evaluated its ability to estimate physical activity intensity. This study determined the accuracy of the algorithm used by the activPAL to predict metabolic equivalents (METs) from cadence and a curvilinear cadence-METs equation individualized for height. Thirty-six healthy adults (25 ± 6 years) completed a progressive walking protocol. Stepping cadence was video recorded and METs were determined via indirect calorimetry. Manually-counted cadence was input into the activPAL and curvilinear equations. The internal activPAL equation overpredicted METs at slower cadences (<120 steps/minute) but underpredicted METs at faster cadences (>120 step/minute) (proportional bias, p < .001). Conversely, the curvilinear equation exhibited neither fixed (p = .37) nor proportional bias (p = .07), and a lower absolute MET difference [0.87 ± 0.65 (range:0.0–3.2) vs. 0.56 ± 0.45 (range:0.0–2.7) METs]. The linear activPAL equation poorly estimates METs from stepping cadence but these inaccuracies may be lessened through the use of an individualized curvilinear equation. 相似文献
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Deanna D. Sellnow Derek R. Lane Timothy L. Sellnow Robert S. Littlefield 《Communication Studies》2017,68(5):552-567
This study presents the IDEA (internalization, distribution, explanation, action) model as an easy-to-use and situationally generalizable framework for quickly developing effective messages instructing people on how to protect themselves before and during high-risk events, crises, disasters, and other emergencies. The model consists of four elements: helping message recipients internalize the potential impact of the risk or crisis event, identifying appropriate channels and strategies for distributing the risk or crisis event messages, offering a brief and intelligible explanation of the nature of the risk or crisis, and providing specific self-protective action steps for people to take. The model may be used to design messages in any risk, crisis, or emergency context. Through a posttest-only quasi-experimental cross-sectional research experiment, this study measured the perceived message effectiveness, cognitive understanding, and behavioral intentions of those viewing a television news story about a crisis situation employing the IDEA model compared to those viewing a similar story replicating typical crisis event news stories delivered to general publics. This comparative examination revealed that the message designed according to the IDEA model was significantly more effective than the status quo message and resulted in greater behavioral intentions to engage in appropriate self-protective actions in the event of an acute risk or crisis situation. Strategies for implementing the model are also provided. 相似文献
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Amy O'Connor Emily A. Paskewitz Derek A. Jorgenson Jessica M. Rick 《Journal of Applied Communication Research》2016,44(1):40-59
Corporate social responsibility (CSR) is widely understood as the various activities corporations engage in to meet stakeholder demands and demonstrate fit in society. Often employees are positioned as the beneficiaries of corporate largesse and worker recruitment and retention are offered as rationale for CSR activities. The voice of the employee, however, is noticeably missing from the CSR literature. This study uses a case study approach to explore how locked-out union workers define CSR. We conducted 51 semi-structured interviews and analyzed 27 secondary data sources. The results suggest that workers fuse together economic and ethical responsibilities to develop a portrait of their employer's CSR. Workers defined CSR as an economic/ethical responsibility that is intimately tied to a set of explicitly and implicitly communicated values. Our analysis exposed four additional dimensions that informed employees’ understanding of CSR: reciprocity, fair treatment, economic justice, and organizational structure. Propositions for future research and practical implications are offered based on the findings. 相似文献
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The purpose of this investigation was twofold: (a) from a dialogic pedagogy perspective, to determine the possible negative association between instructors’ compulsive communication and student communication satisfaction; and (b) using Expectancy Violations Theory as a framework, to test the extent to which instructor credibility mediated the negative association between compulsive communication and student communication satisfaction. We found that students’ perceptions of instructors’ compulsive communication is linked to lower levels of student communication satisfaction. Importantly, results also showed that instructor credibility tempers the negative association between instructors’ compulsive communication and student communication satisfaction. 相似文献
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AbstractIt’s not uncommon for people to make reference to atmospheres, including in relationship with educational spaces. In this article, we investigate educational atmospheres by turning to Western and Chinese literature on the air and wind. We pursue this task in three phases. First, we examine the Western literature to see the possible strings of thought that would help us reinvigorate the element of air/atmosphere as a foundational component of an educational sphere. Second, we historicize the Chinese notion of wind as a style of reasoning which structures ancient Chinese cosmology, tempo-spatiality, teaching, and governing into a grid of intelligibility. Third, we argue for a bracketing of a trap of philology and a signifier-signified representational logic through reconceptualizing the atmosphere as a thing that blurs the material-figural boundary and that pushes into a new genre of educational life. 相似文献
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