一、运算速度 优先使用内建函数，尤其在遇到很多for循环情况时，多使用内建函数来代替循环，如:bsxfun、arrayfun、spfun、st

归一化是指将有量纲的物理量，经过变换，转化为无量纲的表达式，成为一个纯量。 量纲分析就是通过对系统相关的物理量的单位进行分析，得到系统的数学表

centos7开始不分32位和64位，在官网下载x86_64的iso，利用Fedora LiveUSB Creator制作一个U盘启动盘，把ISO镜像也要拷

1 2 3 4 5 6 7 8 9 data=[1 2 3 4;5 9 8 7;8 9 7 8;1 5 6 7]; fileID = fopen('data.txt','w'); [h s]=size(data); for m=1:h fprintf(fileID,'Node:\t'); fprintf(fileID,'%f\t',data(m,:)); fprintf(fileID,'\n') end fclose(fileID) 结果为： 1 2 3 4 Node: 1.000000 2.000000 3.000000 4.000000 Node: 5.000000 9.000000 8.000000 7.000000 Node: 8.000000 9.000000 7.000000 8.000000 Node: 1.000000 5.000000 6.000000 7.000000

Admit your mistakes and try to fix them head on. If you are ever in a heated situation, avoid the use of the word ‘you!’. It is accusatory and will not help. Instead say ‘I feel…’ and go from there. Go to your managers with solutions, instead of problems. Make their job easier, learn how they work, and then ride their coattails up the ladder. Your attitude is everything. Never, ever, ever gossip if you can help it.