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细胞的运动分布与空间结构基因
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作者 程洪文 《自然科学》 2024年第3期524-529,共6页
力是细胞运动分布的动力,而空间结构因子(相关蛋白质、RNA、DNA等等)是这些力产生的原因,空间结构基因是空间结构因子的核心。本文在理想模型下推导出机体细胞及神经细胞轴突的起始、终止部位的分布特点具有:与空间结构基因活性渐变相... 力是细胞运动分布的动力,而空间结构因子(相关蛋白质、RNA、DNA等等)是这些力产生的原因,空间结构基因是空间结构因子的核心。本文在理想模型下推导出机体细胞及神经细胞轴突的起始、终止部位的分布特点具有:与空间结构基因活性渐变相关的空间渐变分布。这些渐变分布是神经系统通过神经纤维规律性、渐变性、对应性联系的基础。 展开更多
关键词 空间结构基因 空间结构因子 细胞运动 轴突 渐变性
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Going Behind the Scenes: The Input Hypothesis Revisited
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作者 Shen Li 《Fudan Journal of the Humanities and Social Sciences》 2010年第1期90-112,共23页
Few studies have to date gone behind the scenes to unveil the hidden metaphor-metonymy structure underpinning the input hypothesis ( Krashen 1981 ) despite overt attention paid to it over the years. In an effort to ... Few studies have to date gone behind the scenes to unveil the hidden metaphor-metonymy structure underpinning the input hypothesis ( Krashen 1981 ) despite overt attention paid to it over the years. In an effort to use a fine-grained metaphor-analysis approach( e. g. , Lakoffand Johnson 1980, 1999) to revisit the input hypothesis, this study looks into its thrust--the causal effect of comprehensible input upon comprehension--in the hope of charting out its hidden organization. By discovering a theme of CAUSATION pivoted on space-based metaphors and metonyrnies, the present study brings to relief two fallacies committed in the input hypothesis. First, the heavy dependence on the prototypicaUy physical-spatial hierarchy leads to a red-herring fallacy, whose inconsistency defies rather than supports its statement about comprehensible input as the overriding cause. Second, although there is no denying that comprehensible input is a significant source of language gains, to enthrone it as the sole causal variable to the exclusion of all the other important variables, especially the agency of the 1.2 learner who should have been positioned in the spotlight in the first place, is another fallacy of immense magnitude. 展开更多
关键词 METAPHOR METONYMY the input hypothesis
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