Development of a Swedish bicycle helmet promotion programme--one decade of experiences
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چکیده
منابع مشابه
Experiences from a Decade of TinyOS Development
When first written in 2000, TinyOS’s users were a handful of academic computer science researchers. A decade later, TinyOS averages 25,000 downloads a year, is in many commercial products, and remains a platform used for a great deal of sensor network, low-power systems, and wireless research. We focus on how technical and social decisions influenced this success, sometimes in surprising ways. ...
متن کاملBarriers to bicycle helmet use.
OBJECTIVE To determine why people do or do not wear helmets while bicycling. METHODS A survey was conducted from August through October 1999. Two survey areas were chosen for this study: local public schools and paved bicycle trails. For the school arm of the study, 3 public elementary, middle, and high schools were selected from 3 different regions of Rochester, Minnesota, for participation ...
متن کاملBicycle helmet efficacy: a meta-analysis.
Bicycle helmet efficacy was quantified using a formal meta-analytic approach based on peer-reviewed studies. Only those studies with individual injury and helmet use data were included. Based on studies from several countries published in the period 1987-1998, the summary odds ratio estimate for efficacy is 0.40 (95% confidence interval 0.29, 0.55) for head injury, 0.42 (0.26, 0.67) for brain i...
متن کاملeffect of oral presentation on development of l2 learners grammar
this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
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ژورنال
عنوان ژورنال: Health Promotion International
سال: 2002
ISSN: 1460-2245
DOI: 10.1093/heapro/17.2.161