| 基于三次样条插值计算长江三峡水位与库容关系函数 |
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| 引用本文： | 付丹.基于三次样条插值计算长江三峡水位与库容关系函数[J].教育技术导刊,2009,8(3):45-46. |
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| 作者姓名： | 付丹 |
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| 作者单位： | 武汉科技大学计算机学院; |
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| 摘 要： | 在研究长江三峡水位与库容的关系基础上,考虑到高次插值函数的计算量大,有剧烈振荡且数值稳定性差(龙格现象),而分段插值在分段点上仅连续而不可导,虽然分段三次Hermite插值有连续一阶导数。鉴于用最优控制理论计算长江三峡经济效益极大值要求状态变量要二阶可导,故根据三次样条函数插值具有一阶、二阶导数收敛性质而提出用三次样条插值方法去计算水位与库容的关系。函数表达式及曲线图证明效果良好。
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| 关 键 词： | 三次样条插值 长江三峡 水位与库容 插值函数 |
Analysis on Network Distance Education System from the Angle of Ergonomics |
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| Abstract: | In the distance education based on web ,we should not only attach importance to the increase of learning efficiency ,but think much of the health of the learners＇ body and psychology.The article analyzed the web distance education system based on ergonomics, discussed the elements of human-machine-environment system and their relations.At last,the article put forward some ideas about improving the health of the learners＇body and psychology and increasing the efficiency of distance education based on web. |
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| Keywords: | Web Distance Education System Ergonomics E-leaming |
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