在基于人工免疫的入侵检测研究领域,一般都是应用随机产生字符串的方法来生成检测器。这种方法生成检测器的速度较慢,而且生成的检测器集的检测率低。由于非我样本中存在着关于非我空间的信息,提出通过应用非我样本来初始化基因库并应...在基于人工免疫的入侵检测研究领域,一般都是应用随机产生字符串的方法来生成检测器。这种方法生成检测器的速度较慢,而且生成的检测器集的检测率低。由于非我样本中存在着关于非我空间的信息,提出通过应用非我样本来初始化基因库并应用基因库来生成检测器的方法来检测入侵。应用KDD Cup 1999入侵检测数据集,通过实验证明该方法是有效的,能更快地生成检测率更高的检测器集。展开更多
Cationic polymers have been receiving much attention as non-viral gene vectors. The aqueous mobile phase was optimized in combination with Shodex OHpak SB columns for size-exclusion chromatography （SEC） analysis of ...Cationic polymers have been receiving much attention as non-viral gene vectors. The aqueous mobile phase was optimized in combination with Shodex OHpak SB columns for size-exclusion chromatography （SEC） analysis of disulfide-containing poly（ethylene imine） （PEI） derivatives used in gene delivery. Addition of acetonitrile in mobile phase was shown to be able to suppress the hydrophobic interactions between polymer analytes and the stationary phase. The absolute molecular weights and distributions of the cationic polymers were determined directly from online SEC-MALS （multi-angle light scattering）/RI （refractive index detector）. The results demonstrate that a good SEC separation of disulfide-containing PEI derivatives used in gene delivery with little band broadening was achieved.展开更多
文摘在基于人工免疫的入侵检测研究领域,一般都是应用随机产生字符串的方法来生成检测器。这种方法生成检测器的速度较慢,而且生成的检测器集的检测率低。由于非我样本中存在着关于非我空间的信息,提出通过应用非我样本来初始化基因库并应用基因库来生成检测器的方法来检测入侵。应用KDD Cup 1999入侵检测数据集,通过实验证明该方法是有效的,能更快地生成检测率更高的检测器集。
基金supported by the National Natural Science Foundation of China(Nos.20774068,21074100)the Ph.D. Programs Foundation of Ministry of Education of China(No.20070486035)
文摘Cationic polymers have been receiving much attention as non-viral gene vectors. The aqueous mobile phase was optimized in combination with Shodex OHpak SB columns for size-exclusion chromatography （SEC） analysis of disulfide-containing poly（ethylene imine） （PEI） derivatives used in gene delivery. Addition of acetonitrile in mobile phase was shown to be able to suppress the hydrophobic interactions between polymer analytes and the stationary phase. The absolute molecular weights and distributions of the cationic polymers were determined directly from online SEC-MALS （multi-angle light scattering）/RI （refractive index detector）. The results demonstrate that a good SEC separation of disulfide-containing PEI derivatives used in gene delivery with little band broadening was achieved.
