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In this paper,the scale of binary discernibility matrix are greatly reduced by using absorption law on row and logic addition,and a reduction algorithm based on binary discernibility matrix is proposed.

为此,利用对行的吸收律和逻辑和实现了对二进制可辨矩阵的规模进行有效缩减,构造一种新的基于二进制可辨矩阵的数据约简算法。

Using a prime m-dyadic additive group ,a expansive method of matrix with orthogonal rows is presented.By means of this method a series of extensional matrices may be obtained.

利用m-并元加性群,本文提出了行正交矩阵的一种扩大法,利用这种扩大法可以得到一系列延续矩阵。

Methods 65 patients were scanned in brain with magnetic resonance spectroscopy''the location and the size of region of interesting and other scanning parameters values (FOV''frequency matrix''phase matrix''saturate cingulum''etc.

对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、大小和其他参数设置(FOV、频率矩阵、相位矩阵、预饱和带等

Methods 65 patients were scanned in brain with magnetic resonance spectroscopy,the location and the size of region of interesting and other scanning parameters values (FOV,frequency matrix,phase matrix,saturate cingulum,etc.) were changed intentionally,the values of full width at half maxium and water suppression lever were recorded.A preliminary evaluation of the resulted waves and the relationship between the parameters data and the quality of the MRS waves were probed.

对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、大小和其他参数设置(FOV、频率矩阵、相位矩阵、预饱和带等),记录预扫描后系统显示的半高宽、水抑制程度等数值,并对扫描后显示的图像质量进行初步评价,探讨这些数值与波谱质量之间的关系。

Objective To explore the effects on images from the space location of spectrum and scanning parameters,and summarize the technological essential and application hints.Methods 65 patients were scanned in brain with magnetic resonance spectroscopy,the location and the size of region of interesting and other scanning parameters values (FOV,frequency matrix,phase matrix,saturate cingulum,etc.) were changed intentionally,the values of full width at half maxium and water suppression lever were recorded.A preliminary evaluation of the resulted waves and the relationship between the parameters data and the quality of the MRS waves were probed.

目的 观察波谱空间定位和扫描参对图像质量的影响,并初步小结应用要点方法对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、小和其他参数设置(FOV、频率矩阵、相位矩阵、预饱和带等),记录预扫描后系统显示的半高宽、水抑制程度等数值,并对扫描后显示的图像质量进行初步评价,探讨些数值与波谱质量之间的关系。

objective to explore the effects on images from the space location of spectrum and scanning parameters,and summarize the technological essential and application hints.methods 65 patients were scanned in brain with magnetic resonance spectroscopy,the location and the size of region of interesting and other scanning parameters values (fov,frequency matrix,phase matrix,saturate cingulum,etc.

对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、大小和其他参数设置(fov、频率矩阵、相位矩阵、预饱和带等),记录预扫描后系统显示的半高宽、水抑制程度等数值,并对扫描后显示的图像质量进行初步评价,探讨这些数值与波谱质量之间的关系。

objective to explore the effects on images from the space location of spectrum and scanning parameters'and summarize the technological essential and application hints.methods 65 patients were scanned in brain with magnetic resonance spectroscopy'the location and the size of region of interesting and other scanning parameters values (fov'frequency matrix'phase matrix'saturate cingulum'etc.

目的 观察波谱空间定位和扫描参数对图像质量的影响,并初步小结应用要点。方法对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、大小和其他参数设置(fov、频率矩阵、相位矩阵、预饱和带等),记录预扫描后系统显示的半高宽、水抑制程度等数值,并对扫描后显示的图像质量进行初步评价,探讨这些数值与波谱质量之间的关系。

Based on the analysis of the geometrical significance of basic elementary matrix es,the authors put forward some suggestions of teaching of matrixes and transformations in Senior School New mathematics curriculum.

表示"交换某两行的位置"、"把某一行乘以一个非零数"、"把某一行的k倍加到另一行上"的3种基本初等变换的矩阵分别称为基本初等矩阵(1)、(2)、(3)。

For equivalent discernibility matrix has equivalent attribute reduction,the domain is partitioned into compatible and imcompatible elements in this paper.

利用等价差别矩阵具有相同属性约简的思想,将元素对象分割成相容对象与矛盾对象,通过对参与构造差别矩阵的行与列元素进行约简,减少了某些重复计算过程,提高了计算效率。

Using the Gray code, we obtain the relationship between the row of Hadamard matrix and discrete Walsh function. Because Hadamard matrix has good recursion, makes the construction of discrete Walsh function is simple and convenient.

通过Gray码给出了Hadamard矩阵的行和离散Walsh函数之间的关系,由于Hadamard矩阵具有良好的递推性,所以使得离散Walsh函数的构造简单方便。

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