谱值 meaning in Chinese
spectral values
spectrum value
Examples
- Study on blasting vibration damage based on response spectrum
基于反应谱值分析的爆破震动破坏评估研究 - Results show that all the parts of the artillery produce vibration acceleration in the traveling course . the power spectrum is mainly in the low frequency segment . worse road surface and higher speed will cause higher power spectrum value of the acceleration response
结果表明火炮牵引行驶过程中各部件均产生振动加速度，其功率谱主要分布在在低频段，路况差、速度高则加速度响应的功率谱值高。 - 754 horizontal - component digital broad - band records in western north america are processed . the acceleration response spectra are calculated and used as part of the database . the response spectrum values are estimated by the earthquake magnitude definition and are used as another part of the database
将美国西部地区作为参考地区，对美国南加州地区的数字宽频带记录进行了搜集与处理后作为观测资料，共754条水平向记录，与利用震级定义所估计的反应谱值一起，用统计回归的方法建立美国西部长周期加速度反应谱衰减关系。 - In addition , effects of several factors such as local site conditions , focal mechanism , epicentral distance and seismic magnitude on these parameters are discussed , and several significative results and conclusions are obtained . in all records there are about 1 / 3 vertical ground motion ’ s peak acceleration bigger than 2 / 3 of the corresponding horizontal one , so the action of vertical ground motion should not to be underestimated . vertical design response spectrum equals that the horizontal design response spectra times 65 % is probably unsafe when period is short , and suggest adopting different coefficients when at different periods
本文基于对大量欧洲强震记录的研究,分析了地震动竖向与水平向分量在峰值加速度、反应谱值、频谱周期等参数方面的差异,以及这些参数与场地、震源机制、震级和震中距的关系,得到了以下有意义的结果和结论:在本文分析的地震记录中大约1 / 3的记录加速度峰值比大于2 / 3 ,竖向地震动分量的作用不可低估;在短周期,竖向地震动影响系数的最大值仅取为水平向地震动影响系数最大值的65 %是偏于不安全的,可以考虑按周期分段采用不同的折减系数;我国现行抗震规范中设计反应谱特征周期的取值偏低,可能是偏于不安全的;竖向与水平向地震动分量卓越周期的比值在0 . 7 - 0 . 9之间,竖向设计反应谱的特征周期应有单独规定。 - Using the theories of probability , algebra and number theory comprehensively , we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions , which are constructed from any two bent functions , are studied , followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values . some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions , whose cryptographic properties are explored by the matrix method , which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher , communications and block ciphers is discussed , which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions , including the complete construction by using the characteristic matrices of boolean functions , and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp , where p is a prime , and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered
本文首先综合运用概率论、代数学、数论等基础学科的理论知识，并以频谱理论作为主要研究工具，对一类谱值分布相对均匀的函数? ?广半bent函数、 k阶拟bent函数和p值k阶拟广义bent函数进行了系统、深入的研究，给出了广半bent函数定义，并探讨了广半bent函数的密码学性质；给出了k阶拟bent函数和p值k阶拟广义bent函数的定义及等价判别条件；讨论了k阶拟bent函数和p值k阶拟广义bent函数与部分bent函数和p值广义部分bent函数的关系，探讨了它们的密码学性质；给出了k阶拟bent函数和p值k阶拟广义bent函数的典型构造方法，并将对k阶拟bent函数的密码性质的研究转化到对一类特殊的矩阵的研究上；利用布尔函数的特征矩阵原则上给出了k阶拟bent函数的一种完全构造方法，还给出了从已有的p值k阶拟广义bent函数出发，递归构造变元个数更多的p值k阶拟广义bent函数的方法；初步探讨了k阶拟bent函数在序列密码、分组密码以及通信中的应用；给出了一类布尔函数walsh谱的分解式，并利用这类布尔函数的walsh谱分解式给出了一类近似稳定的布尔函数的构造，特殊情形下为k阶拟bent函数；利用代数数论的知识考察了p值k阶拟广义bent函数的谱特征，并给出了k阶拟广义bent函数与所有仿射函数的符合率特征等等。