Search extension resources by using extension analysis method and Solveresources contradiction in enterprise reorganization by using extension transform methods.

利用可拓分析方法寻找可拓资源，以及通过可拓变换方法解决企业重组资源矛盾。

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Both convolution Backprojection (CBP) method and direct-Fourier (DF) reconstruction method are the representative algorithms of transform methods in image reconstruction.

卷积反投影(CBP)与直接傅立叶重建(DF)同是图像重建中变换法的典型算法。

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Then it discusses several transform methods, such as continuous wavelet transform, discrete wavelet transform and wavelet packet transform of which characteristics are analyzed.

然后探讨了连续小波变换、离散小波变换、小波包变换等小波理论中几种重要的变换方法，分析了这几种小波变换的时频特性。

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But they say that too often they are used without a strong understanding of their power to transform education, and many schools still use technology to support 20th Century teaching methods and learning objectives.

BBC: Costly hi-tech kit lies unused in schools, says study