Further more , the new nonlinear method for constructing high order resilient functions is present , and a lower boundary of these functions " nonlinearity is also obtained by using the definition of local nonlinearity 同時(shí)還給出了構(gòu)造高階彈性函數(shù)新的非線性方法,并通過運(yùn)用局部非線性度的定義,得到了這些彈性函數(shù)非線性度下界的一個(gè)關(guān)系。
In chapter four , the security of the local and the integer on cryptographic functions are analyzed , and a new measure index of local security , namely local nonlinearity is also introduced . moreover , the relation of both the local nonlinearity and nonlinearity of cryptographic functions was opened out 第四章分析了密碼函數(shù)的整體安全性與局部安全性,其中引入局部安全性新度量指標(biāo)?局部非線性度,揭示了密碼函數(shù)的(整體)非線性度和局部非線性度的關(guān)系。
Considering the local nonlinearity of the rotor - bearing system , a systematic dimension reduction method is applied in this paper for low - pressure rotor - bearing of the 200mw turbine set system . the model of the rotor - bearing system is established by fem ( finite element method ) . the fixed - interface component mode synthesis procedure is applied to significantly reduce the dimension of the system 本文針對(duì)200mw汽輪發(fā)電機(jī)組低壓轉(zhuǎn)子?軸承系統(tǒng),采用了一種系統(tǒng)的降維分析方法:利用有限元方法建立了轉(zhuǎn)子?軸承系統(tǒng)的有限元模型,然后利用固定界面模態(tài)綜合法顯著地降低系統(tǒng)的維數(shù)。