期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
利用数据规律分析法巧解数学问题 被引量:2
1
作者 卢玉成 唐荣桂 +1 位作者 王一帆 卢曦 《高等数学研究》 2016年第4期40-43,共4页
数据规律分析法不但应用于曲线的优化拟合,还可以方便地解决一些数学问题.文中从线性方程组求解、复合函数公式系数计算、数字排列规律分析、多种数列求和公式推导等方面给出简单的实例,读者可以举一反三,利用该方法解决更多数学问题.
关键词 数据规律分析 线性方程组 复合函数 数字规律分析 数列求和
下载PDF
数据规律分析法在曲线优化拟合中的应用 被引量:1
2
作者 卢玉成 唐荣桂 +1 位作者 卢曦 王一帆 《高等数学研究》 2016年第1期67-70,共4页
本文介绍了数据规律分析法所包含的公式体系和系数计算方法;在曲线拟合中,实际算例结果表明该方法优于常规方法,同时验证了降价法与回归分析法具有同等的计算精确度;作为一种数学方法,可为高等教材"数值分析"增添新的内容。
关键词 曲线拟合 数据规律分析 降阶法 回归分析 误差分析
下载PDF
曲线优化拟合中的数据规律分析法运用
3
作者 邱立军 《学苑教育》 2019年第3期88-89,共2页
数据规律分析法能解决多种数学问题,应用在曲线拟合中,按照曲线节点的数据规律对曲线公式进行配置。文章简要说明了数据规律分析法含有的公式体系以及系数计算方法,通过实例验证了数据规律分析法对曲线优化拟合的重要性。
关键词 曲线优化 数据规律分析 应用
下载PDF
清江西苑深基坑监测方案设计及数据分析 被引量:2
4
作者 黄雪良 《现代测绘》 2012年第2期42-44,共3页
深基坑监测是工程基坑开挖安全的保证,通过总结监测数据反映出基坑在土方开挖过程中变化情况的规律,优化了土方开挖方案。该方案既降低了施工风险,又节约了施工成本。
关键词 深基坑监测 土方开挖 监测数据规律分析
下载PDF
Seat belt use during pregnancy in Iran: attitudes and practices
5
作者 Mojgan Karbakhsh Zahra Ershadi +1 位作者 AliKhaji FatemehRahimi-Sharblaf 《Chinese Journal of Traumatology》 CAS 2010年第5期275-278,共4页
Objective: Seat belt use during pregnancy reduces injury to the mother and her fetus. During recent years, the use of seat belts has been mandated by law in Iran. The purpose of this study was to determine the attitu... Objective: Seat belt use during pregnancy reduces injury to the mother and her fetus. During recent years, the use of seat belts has been mandated by law in Iran. The purpose of this study was to determine the attitudes and practices of pregnant women regarding seat belt use. Methods: In this cross-sectional study, we asked 335 pregnant women at a hospital-based prenatal care clinic on the use of safety belt before and during pregnancy. SPSS version 13.0 was used for data analysis. Results: The mean age of study subjects was 27.3 years±5.3 years with the median of 27 years. Compared with the seat belt use before pregnancy, no change was detectedin 48.7% of the women; seat belt use had increased in 17.5 % of them and decreased in 33.8 %. Eighty-one percent of women knew the correct placing &both lap belt and shoulder belt. Only 4% of women had received education on proper restraint use during pregnancy. Conclusions: The prevalence of seat belt use during pregnancy is lower than reports which are mostly from developed nations. The fact that about one-third of women have decreased their seat belt usage during pregnancy highlights the importance of education of mothers on this topic. 展开更多
关键词 Seat belts PREGNANCY Accident traffic SAFETY
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部