讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
This paper discuss the locally topological structure of higher order singular point for the plane cubic system in the first critical case and give a criterion by the coefficients of polynomials.
讨论了第一临界情形下的平面三次系统高次奇点的局部拓朴结构，并给出利用多项式系数的判断准则。
The locally topological structure of higher order singular point for the plane quartic system in the first critical case is discussed, and a criteria by the coefficients of polynomials is given.
EBCOT是JPEG2000系统中占运算时间最多的组成部分，它对每个位平面进行三次扫描、进行三个编码通道的编码操作，浪费了大量的运算时间。
As an important part of JPEG2000, EBCOT algorithm performs the scanning 3 times in each bit plane and codes all coefficients in 3 coding passes, wasting lots of operation time.
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