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瓦兰斯、马丁与戈登的隐性课程概念辨析 被引量:1
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作者 张淑贞 赵宁 《教育与教学研究》 2013年第10期77-79,93,共4页
瓦兰斯、马丁与戈登三人对隐性课程的定义都对隐性课程的研究有着深远的影响。瓦兰斯认为隐性课程是学校教育中没有明确提及但又实际起作用的一些结果和实践,马丁认为隐性课程是在学校环境内外有意或者无意产生的、未被学习者公开认识... 瓦兰斯、马丁与戈登三人对隐性课程的定义都对隐性课程的研究有着深远的影响。瓦兰斯认为隐性课程是学校教育中没有明确提及但又实际起作用的一些结果和实践,马丁认为隐性课程是在学校环境内外有意或者无意产生的、未被学习者公开认识到的学习状态,戈登认为隐性课程是学校内物理环境和教职员工给学习者带来的潜在学习结果。他们的定义有各自的优势和缺陷,对这些定义的辨析有助于人们加深对于隐性课程概念的理解。 展开更多
关键词 瓦兰斯 马丁 戈登 隐性课程的概念
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Utilizing of Methane from Polish Hard Coal Mines
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作者 Justyna Swolkien 《Journal of Energy and Power Engineering》 2015年第2期149-160,共12页
The methane capturing and its utilization is of great importance for the safety in Polish coal mines. The present study deals with methods which are used to capture and utilize it in hard coal mines. It is of great im... The methane capturing and its utilization is of great importance for the safety in Polish coal mines. The present study deals with methods which are used to capture and utilize it in hard coal mines. It is of great importance to know that at present, ethane recovered in operating mines is obtained only through drainage systems whose implementation is enforced by health and safety regulations. Because of the fact that the amount of methane released in hard coal mines is expected to rise in years to come, as the methane content of coal seams increases with depth, heavy emphasis should be placed on methane recovery and the practical applications of the captured gas. If mine gas was officially recognised as a primary source for producing "environmentally friendly electricity", would open the perspectives of increasing methane utilization. In addition, the mining industry would gain an incentive to intensify methane recovery. It would be possible to carry out additional work focused on methane drainage from excavations which are not operated. Also, the costs of methane drainage could be included in the costs of energy production, which would undoubtedly have a positive effect on the profitability of mining companies. 展开更多
关键词 Hard coal mines methane utilization methane hazard methane emission.
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