Because the computational complexity of msa grows exponentially with the length of the sequences , and division can extremely reduce the computational complex and lead to fast alignment speed eventually 由于序列对齐的计算复杂性相对于序列长度成指数形式增长，所以将长序列集分割成短序列子集的dca思路可能产生快速的多序列对齐。
It is shown that the ovsf sequence length of the interference user has significant influence on the ber performance of the desired user , while the effect of sequence length of the desired user is negligible 结果表明，干扰用户所采用的ovsf序列长度对期望用户的ber性能有显著影响，而期望用户所采用的序列长度对其ber性能影响较小。
This paper presents the definition of regular stream and irregular stream , and then describes masa multiple - morphs adaptive stream architecture prototype system which supports different execution models according to applications stream characteristics 流是不间断的连续的移动的数据序列，序列长度可以是定长或不定长的，序列中记录流元素的构成可以简单或复杂。
The solid objective belong to a and b particles . complexity theory as an important part of nonlinear science is seldom used in fluidized bed . the arithmetic of complex parameter are discussed , then compared with chaos parameter - - - - maximum lyapunov exponent 本文首先讨论了复杂性的具体算法，结果表明其具有计算方便，对时间序列长度等条件的要求相对较低等优点，在算法上明显优于混沌特征参数。
The - glc squence of tea plant consists of 1475 bp , including 189bp 3 ' utr , 233bp 5 ' utr and 1050bp open reading frame . the deduced amino acids ( aa ) sequence is a 350aa - glc precursor which consists of an 82aa transit peptide and a 257aa mature protein 结果表明，该序列的3 ’ -端和5 ’端的非编码序列长度分别为189bp和233bp ，开放阅读框为1050bp ，编码350氨基酸，其转运肽长度为82个氨基酸，成熟蛋白由257个氨基酸组成。
Experimental results show that the watermarking algorithm presented in this thesis can survive general lossy compression , such as jpeg , noise and lowpass filter manipulation . the robustness of watermarking is related with the length of spread spectrum sequences . the longer the spread spectrum sequences are , the more robust the watermarking is 实验结果表明，本文提出的算法能抵抗一般的有损压缩( jpeg ) ，加噪和滤波处理，而且水印的鲁棒性与扩频序列的长度有关系，扩频序列长度越长，水印的鲁棒性越强。
Analysis of the sequence variation of cytochrome b gene indicated that there is no evidence of insertions or deletions , i . e . , they are all of identical length of 1143 bp in all the sequences of cytochrome b gene . further , the sequences can be fully translated into amino acid using chicken mitochondrial codon without nonsense mutations or intervening stop codons . the 1143 bp cytochrome b alignment contained 416 variable sites , of which 306 were parsimony informative sites with the strongest variable in third codon positions and less variable in first and second codon positions 细胞色素b基因序列变异分析表明： 1 ）雁形目鸟类细胞色素b基因全序列长度一致，无插入和缺失：对照鸡线粒体密码子系统全序列能全部翻译成氨基酸序列，无无义突变，全序列内部无终止密码子； 2 ）序列比对后1143加，含416个核着酸变异位点， 306个简约信息位点，其中处于密码子第三位的变异最大，第一位和第二位碱基的变异相对较小。
In the alpha - amylase gene , the length of the non - ltr retrotransposon , located in intron ii , is equal in bombyx mori and bombyx mandarina , with a nucleotide sequence similarity of 98 % ; the length of the coded reverse transcriptase is equal in both nucleotide and amino acid sequence with a similarity of 98 % also 家蚕、野桑蚕-淀粉酶基因intron中的(野桑蚕) non - ltrretrotransposon之间序列长度相等，相似性为98 ，其内编码reversetranscriptase的基因，序列长度相等，核苷酸序列和氨基酸序列相似性达98 。
Sequence analysis indicated that the opening reading frame of ns1 gene is 1056nt in length , encoding 352 amino acids , identical to the sequence of strain sa 14 - 14 - 2 deposited in genbank . ns1 gene in the pmd18 - t - ns1 was cut by bamhi and hindiii , was cloned into the expression plasmid pet - 30b ( + ) treated with the same enzymes , resulting in a recombinant plasmid pet - 30b - ns1 . the pet - 30b - ns1 was identified by pcr , restriction digestion , and sequencing 通过序列分析结果表明， jev - ns1基因编码区核苷酸序列长度为1056bp ，编码352个氨基酸，序列分析和比较表明本实验克隆到的ns1蛋白基因与genbank中收录的疫苗株sa14 - 14 - 2的核苷酸序列一致，表明尽管该疫苗株在我国应用多年，但ns1基因并未发生变异，提示该疫苗株遗传性状比较稳定，是一株优良的疫苗株。
Now there are 5 constructive methods have been found , through which all of the complementary sequences whose length is 2 ' 10s26 " can be constructed . it was proved in this paper that it can determine which equivalence class is constructible or not by the feature seque nce . based on the reseach and computer we have got all the equivalence complementary sequence class with length of not more than 40 , and found a new complementary sequences kernel with length of 20 经分析发现当序列长度n 4时，可以根据特征序列来判断互补序列等价类空间大小，这对实际应用中互补序列的选取具有一定意义；此外本文证明了互补序列等价类的唯一性，即不同的等价类不能包含相同的序列；对互补序列的各种构造方法进行分析，发现通过每种构造方法构造出的互补序列其特征序列均具有某种特性，通过论证得出可以通过特征序列来判断互补序列是否是可构造的以及可以由哪种构造方法构造，并通过特征序列证实了长度为20的互补序列的核的存在性。
