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后RoHS时代企业的应对方案(上)
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作者 BV 云大陆 《家电科技》 2008年第21期21-24,共4页
本文概述了目前电子电器行业面临的对于有害化学物质限制要求的发展状况,即后RoHS时代的形势概况。同时以新的视角、观念和方法推荐了WBS系统概念,推荐给企业一个崭新的方法,告诉企业如何理智地去面对复杂的局面,企业如何在降低监控成... 本文概述了目前电子电器行业面临的对于有害化学物质限制要求的发展状况,即后RoHS时代的形势概况。同时以新的视角、观念和方法推荐了WBS系统概念,推荐给企业一个崭新的方法,告诉企业如何理智地去面对复杂的局面,企业如何在降低监控成本的同时提高风险控制的能力。 展开更多
关键词 ROHS WBS 有害物质控制 化学指令
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The Development and Influence of RCPS Instructions to Promote Students' Scientific Learning Motivation and Scientific Concept Learning
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作者 Fu Yi Shieh Wen-Tung Hung Jen-Chin Lin 《Journal of Chemistry and Chemical Engineering》 2013年第4期374-381,共8页
This research aims at developing RCPS (revised creative problem solving) teaching model, besides the authors designed the instructions of chemical reaction to promote eight grade students' scientific learning motiv... This research aims at developing RCPS (revised creative problem solving) teaching model, besides the authors designed the instructions of chemical reaction to promote eight grade students' scientific learning motivation and scientific concept learning. We adopted quasi-experiment study, the experimental group and controlled group all 28 students were chose, go on the parameter is analyzed together compared with textbook instructions, scale of scientific learning motivation and test of scientific conception learning were used for the two groups in prior test and post test, then they used statistical ANCOVA (analysis of covariance) to analyze the differences between the two teaching models. The result of this study finds that RCPS teaching model improved student's scientific learning motivation and learning scientific concept was superior to textbook instructions in controlled group, p = 0.001 (〈 0.01), and all with high experimental treatment effects (〉 0.14). The study also proposes that when RCPS teaching model was applied to scientific concept teaching, RCPS teaching model should be joined the conception introducing stage, and pay attention to students' scientific learning motivation. 展开更多
关键词 Revised creative problem solving scientific concept learning scientific learning motivation.
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