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This cross-sectional study analysed the association of sedentary behaviour (SB) and standing with waist circumference. Finnish adults aged 30-75 years from a sub-sample of population-based Health 2011 Study used a hip-worn tri-axial accelerometer (Hookie AM20, Traxmeet, Ltd, Espoo, Finland) for seven days. Those 1405 participants (57% women) who used accelerometer at least four days, minimum of 10 hours/day, were included. SB and standing were analysed in 6s epochs using validated algorithm. Daily total time, daily number and accumulated time from bouts (30s–5min,30s–10min,30s–15min,30s 30min,>5min,>10min,>15min, >30min) as well as daily number of sit-to-stand transitions were determined. Waist circumference (cm) was measured in standardized way. Participants’ mean age was 52 years (SD 12.2). Mean waist circumference was 97cm (SD 12.3) in men and 87cm (SD 12.7) in women. According to multivariable stepwise linear regression analysis, sit-to-stand transitions [standardised regression coefficient (β)= -0.14, 95%CI -0.20 to -0.09], standing bouts of 30s–5min (β= -0.21, 95%CI -0.26 to -0.15) and number of 30s-30min SB bouts (β=0.12, 95%CI 0.06 to 0.17) were most strongly associated with waist circumference. Besides assessing total SB time, future studies should assess also different bout lengths of SB and sit-to-stand transitions and standing times should be assessed separately.  相似文献   
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早期国家作为历史上的一种政治组织形态,最终的命运是什么呢?研究了它的三种结局:1.早期国家发展成为成熟国家;2.早期国家停滞、衰弱、或者崩溃;3.早期国家沦为其他国家的附属,被合并到更大的组织中,或者是沦为殖民地。  相似文献   
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This research seeks to establish relationships between the stereotypes, self‐ratings and peer‐ratings of students in an experimental secondary school attended by both disabled and nondisabled young people. To study the influence that contact with disabled classmates has upon intergroup perceptions, responses of these students were compared with those of students attending a secondary school that does not practise mainstreaming.Results vary, depending upon whether subjects were asked to attribute adjectives from a list to classmates, some of whom were disabled, or to the disabled persons in general. This research highlights the need to adopt a new approach to intergroup relations.  相似文献   
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The optimistic approach to the uses of mass communication in education which developed in the 1960s has not been confirmed by the accomplishments that have taken place in the past 25 years, although some activities in the field have been remarkable. The reasons are many: some are internal to the educational systems and others are linked with the evolution of technological changes in society. There are, however, some guidelines that can be derived from the best of educational technology in the past 25 years which lead us to think that a more global and cultural approach should be taken in relation to the world of communication and education. There is a future for educational technology provided enough resources are invested in the creation and exploration of new configurations.  相似文献   
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In November 2007, Dutch secondary school students revolted against a requirement known as the “1040-hour norm.” New Web technologies, like instant messaging, YouTube, and social networking sites, played an important role in the mobilization effort. In this article, the authors argue that these technologies facilitate a shift toward micromobilization by individuals and small groups. In this “1040-hour norm” case study, the authors analyze how the course of the political agenda-setting process is being transformed through the interplay between processes of meso- and micromobilization, and through new micro-to-mass media crossover effects. When supported by micromedia, the effects of micromobilization can create strategic surprises for traditional intermediary organizations and policymakers.  相似文献   
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