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131.
Jon Lauglo 《比较教育学》2010,46(2):223-235
More than four decades ago, Philip J. Foster (1927–2008) published an essay on the The vocational school fallacy in development planning, drawing on research on schools in Ghana. That essay has been reprinted in numerous texts and remains frequently quoted in recent research literature. What were his main general insights about vocational education and how have these stood the test of time? 相似文献
132.
Jon Baggaley 《Distance Education》2010,31(1):115-119
Imaginary worlds have been devised by artists and commentators for centuries to focus satirical attention on society’s problems. The increasing sophistication of three‐dimensional graphics software is generating comparable ‘virtual worlds’ for educational usage. Can such worlds play a satirical role suggesting developments in distance education practice and policy? The article examines the emergence of Hinterlife, a cartoon world run by a disarmingly despotic academic known to the real world only by his virtual name, Professor Horace. This article suggests that a healthy dose of satire can help distance education to overcome the problems generated in difficult economic times. 相似文献
133.
经济衰退时期,教育系统有赖于创新者产生转型的意见。远程开放教育（ODE）通过在全球范围内提供教育,能够重新定义教育系统,并产生新的收入,开发新的能力。但是,并非所有ODE都同样具有创意,其国际运作也不尽有效。如果ODE管理者不能确保其教育方式和媒介在全球范围内能得到统一,ODE在经济危机中就很可能失败,而不能成为一种解决方案。要防止这种情况发生,ODE管理者可能需要全新的参照系,并学会摒弃那些不再有价值的参照系。因此,他们面临的是能力再开发的挑战。ODE管理者需要结成国际合作伙伴,以克服由文化、语言和适用技术引起的地域差异,并真正实现远程开放教育的本质。ODE领域出现了很多有关教学、技术和哲学的解决方案,ODE管理者必须找出哪些方案是在组织内部和国际范围内互有关联且前后一致的。否则,由于方式和理念不兼容,教育机构就很难抓住机会进行国际合作。例如,当前西方ODE大量使用的网络教育,放在缺乏网络接入的地区就毫无价值;在发展中国家复制西方式在线教育并宣传此类项目,其实和这些发展中国家也基本没什么关系,起码没有直接关系。因此,在经济衰退时期,管理者管理能力发展中的一个关键要点,就是要认识到需要对ODE政策和实践进行改变,并学会在全球和地方进行改变的概念。如果学会向决定ODE生存的决策者推荐新的方法,ODE管理者们将会获益非浅。 相似文献
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Reiser R Watt J Peterson M 《Sports biomechanics / International Society of Biomechanics in Sports》2003,2(2):237-249
The resistance against a cyclist while riding on rollers is due mainly to rolling resistance produced by the deformation of the tyre as it rolls against small diameter drums. Resistance is then combined with wheel speed to set power output. The effect of tyre pressure and cross-section on power was investigated by systematically altering the pressure (552 kPa, 690 kPa, and 827 KPa) in a 20c, 23c, 25c, and 28c tyre of the same design while riding at a wheel speed of 45 kph. Average power over 1 minute was measured with a Power Tap Hub (Tune Corporation, Cambridge, Massachusetts, USA) on five occasions. Statistical significance was evaluated at p < 0.05. Power requirements increased significantly with each reduction in tyre pressure for all tyres and pressures except the 25c between 690 and 827 kPa. The 20c tyre required significantly more power from the cyclist at each tested tyre pressure when compared to the other tyres (which were not different from each other). The differences in resistance from tyre size were not observed when ridden on the road. Additionally, a slightly different tyre design from the same manufacturer responded similarly in the 20c, but was significantly different in the 23c size. It was also observed that power requirements increased significantly when both the wheels were ridden on the rollers as compared to just the rear wheel. These results indicate that the power requirements may be significantly altered by the cyclist by adjusting tyre pressure, tyre cross-section size, tyre type, and with the number of wheels contacting the rollers. However, the magnitude of these power requirements may not be suitable for intense workouts of trained cyclists. 相似文献
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