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李文辉 《荆门职业技术学院学报》2007,22(3):90-96
有机合成是化学研究领域中最具有魅力的。结构复杂、性质多元、应用广泛的有机物及其合成方法学,让人赞叹与探求。文章用科学方法论总结了有机合成中的化学选择性、区域选择性和立体选择性的规律及其热力学和动力学控制策略,提出了综合利用其控制原理解释或预测竞争性反应产物的基本方法。 相似文献
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王焕然 《南阳师范学院学报》2004,3(8):85-86
绘画观察的目的是为绘画有选择地寻求自然形态中那些具有审美价值的因素，只有运用正确的观察方法才能全面地认识客体。这就需要对客体有选择地、深入细致地进行观察，需要对客体进行整体的及在思维的参与下的观察。同时，要提高主体的主观认识、艺术修养和审美能力，才能更好地把握客体中的审美因素。要了解不同化背景和观念形成的不同的观察方式，才能更有助于绘画的表现。 相似文献
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杨立 《重庆职业技术学院学报》2005,14(3):90-91
本文通过在场和细读文本的方式对《茉莉香片》做出解读，分析作者如何把握主人公复杂矛盾的心理状态、并探讨其心理状态的内部渊源。 相似文献
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Research has shown that attending a relatively selective four-year college over a less selective alternative is positively related to bachelor's degree completion. This paper revisits that question with a novel dataset of over 11,000 sets of twins in the United States and information on colleges to which they apply, enroll, and potentially graduate. I show that a student's probability of bachelor's degree completion within four years increases by 5 percentage points by choosing an institution with a median SAT score 100 points higher than the alternative. Moreover, the estimated magnitude of impact is insensitive to several methodologies, including OLS, twin fixed effects, and controlling for the application portfolio. This suggests that in certain contexts, sources of bias perceived as barriers to obtaining causal estimates of the returns to college selectivity, such as unobserved family characteristics and student aspiration, may be of little concern. 相似文献
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柴洁 《南京体育学院学报(社会科学版)》2007,21(3):77-79
运用文献资料法、问卷调查法、测量法等研究方法对职业技术学院新课程背景下体育课教学的发展趋势以及体制变化带来体育教学模式的改变。在对教材内容进行重新整合选择的前提下,学生在教师的指导下自主学习、自我评价、合作探究、实践创新的教学模式,构建一种可操作性强、实用价值高、应用范围广的新型选择性教学模式。 相似文献
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新课程改革的全面推进,强调教学模式的全面性和具体化,强调教学模式的时效性和多样化,强调教学模式的选择性和实用化,提倡合作、自主、探究的教学模式,主张学生在教师的引导下主动地学习,富有个性地学习,创造性地学习。文章结合教学实践,对新时代语文教学改革双渠道模式进行探究。 相似文献
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Adam C. Scarfe 《Interchange》2005,36(1-2):9-22
This paper, which is particularly centered on the student’s learning process, is the first half of a detailed study of selectivity in Whitehead’s philosophy of education. Here, by setting forth the analogy between the creative process exhibited in Whitehead’s Theory of Prehensions and the learning process through an interpretation of the term, ‘prehending subject’ as ’learner,’ I argue that selectivity, via ‘negative prehensions,’ is the efficient motive power at work in the process of learning. Various concrete classroom examples of selectivity are alluded to, which lend support to this thesis. With clues from the Aims of Education, by reading the theory of prehensions with some conceptual modifications made for the purposes of education, I present the perspective that, as one side of a logical contrast, Whitehead’s theory of prehensions can be said to be conducive to a critical pedagogy. 相似文献