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Recently, many empirical research in growth use average education level as representative human capital index, and most of us to do so in China, but it is many limitations of education variable, especially it is not measure in currency, so cannot compared with other capital, such as physical capital, in appraisal human capital.

近来，多数有关经济增长的实证研究将劳动者的教育水平作为人力资本的代表性指标，我国大多数学者的研究也仅限于这一方法，但是，基于教育代表指标的研究存在很多缺陷，特别是教育指标大多并非以货币为计量单位，在衡量与评价人力资本作用时，难以与其它资本，比如物质资本进行比较。

The paper puts forward stock prediction pattern based on BP Neural Network, depending on Neural Networks approachability to non-linear function. Compared with the prediction method of Time Order, one of the traditional prediction methods, BP algorithm is verified to be feasible and effective on stock prediction.

本文借助神经网络对非线性函数的逼近能力，提出基于BP神经网络的股票价格预测模型，通过对比传统的时间序列预测方法，证实BP神经网络算法用于股票预测的可行性及有效性。

While compared with the vocal pieces of other composers in the same period of time, with all-sided analysis from the topic, the structure, the melody and the music element of S.C.Foster's vocal pieces, the article clearly shows the most prominent character of his songs —"approachability" and the important value of Foster in the development of American music and the history of human being.

本文通过对福斯特歌曲作品的创作题材、形态结构、乐汇来源等多角度的分析与阐释，使读者对福斯特歌曲作品在同时代其他声乐作品中体现出的"亲和力"的这一特征有一个全方位的、较为清晰的认识；并在对这些作品进行细致分析研究后指出，福斯特及其歌曲作品不仅在美国本土音乐文化发展史上有着重要历史地位，还因为歌曲作品本身所具备的对时空的超越性，即歌曲中饱满蕴含的人性和爱这一人类永恒的主题，而成为全人类共有的精神财富。

Based on force characters of the model, authors put forward the mathematical expression of approximate deformation curves and compared calculation curves with measured curves.

基于模型的受力特点，提出了近似变形曲线的数学表达式，并将计算曲线与试验观测曲线进行了比较。

Compared with the approximate calculation method, the results show that the average prediction accuracy of the method based on the thermodynamic theory can be improved by 0.044nm.

用改进后的方法对12个蛋白质进行了测试，预测结构相对于天然结构的均方根偏差在0.4～0.6 nm之间。

Analysis of ratio of hydrogen to nitrogen in synthetic cyclic gas by approximate calculation was introduced and compared with gas chromatography.

介绍采用近似计算方法来计算合成塔循环气氢氮比的分析方法，并将其分析结果与气相色谱仪分析方法相比较，表明该分析方法是可行的。

Combining the definition of CWT and the derivative property of convolution, we constructed a general method to calculate the approximate derivative of signal through CWT by using the first and second derivative of Gaussian function, Haar, and the first derivative of three-order-Spline function as wavelets. As compared with the other approaches of calculating derivative, which include the numerical differentiation, polynomial filters, Fourier transform, and the recently proposed DWT method, fast calculation and simple mathematical operation were remarkable advantages of CWT method. For the signal corrupted by severe noise (Signal-toNoise Ratio=5), the satisfactory results could also obtained via CWT method through appropriately adiusting the dilations.

在此基础上，(1)结合连续小波变换的特点和卷积的微分性质，提出了使用Gaussian函数的一阶和二阶导数，Haar和三次样条函数的一阶导数作为小波函数的连续小波变换计算信号近似导数的一般性方法，与其他导数计算方法(包括数字微分法，多项式滤波法，Fourier变换法和离散小波变换法)相比，本法简单便捷，计算速度快，对于噪声含量较高的信号(S/N为5)，只要适当调节尺度即可获得比较满意的结果。

And solutions given by the"exact"infinite series solution are compared with solutions calculated by the approximate formula.

比较了"精确的"无穷级数解法和高频近似解。

Applying the concept of equivalent negative stiffness of axial forces, the approximate formula for the critical load of the system is suggested, and compared with theoretical results.

对伸臂位于项部的两层框架—筒体模型进行精确位移法分析，得到了结构有侧移失稳的临界荷载精确解。

Methods The clinical symptoms of 148 cases with rotary abortion were observed routinely and compared with that of the approximate number of cases selected randomly with suction abortion.

按照人工流产的常规对施行旋动式流产的148例情况进行总结，并与随机抽取的近似数量的负压吸引人工流产做简单的对比分析。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。