Results 1 to 10 of about 829 (123)

Detecting rotation symmetric function based on 0-1 coded spectral technique(基于0-1编码谱技术检测旋转对称函数)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
分析了旋转对称函数的0-1编码Hadamard变换谱系数的特点,给出了变量数n为素数的旋转对称函数的必要条件,提出了基于0-1编码Hadamard变换检测旋转对称函数的方法,该方法具有可编程操作以及同时可检测其他特殊布尔函数等优点.
MARu-xing(马汝星“)   +1 more
doaj   +2 more sources

New method of detecting rotation symmetric function based on normalized Haar transform(基于归一化Haar变换检测旋转对称函数的新方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2012
讨论了旋转对称函数在归一化Haar变换域中的谱特性,提出了基于归一化Haar变换检测旋转对称函数的新方法.该方法具有易于计算机编程操作以及可以同时检测多种其他特殊逻辑函数等优点.
QIUXiao-hua(邱晓华“)   +1 more
doaj   +2 more sources

A fast algorithm for detecting rotation symmetric logical function with don't-care-terms(检测含无关项旋转对称逻辑函数的快速算法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2019
旋转对称逻辑函数在密码学函数构造领域有广泛应用。针对含无关项旋转对称逻辑函数检测中存在的不足,从含无关项逻辑函数的定义和旋转对称函数的性质出发,提出了检测含无关项旋转对称逻辑函数的快速算法。该算法通过判断逻辑函数1 值最小项二进制编码周期旋转后产生的新编码同1 值最小项及无关项二进制编码的重复性实现快速检测。结果表明,快速算法在适用的逻辑函数变量数、含无关项旋转对称逻辑函数检测的适用性和检测过程的复杂度方面均优于现有的表格方法与谱系数方法。
XUFeng(徐锋), LIXiaohua(厉晓华)
doaj   +2 more sources

The realization of analog switch based upon the basic symmetric function generator(基于基本对称函数产生器的模拟开关实现)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
开关-信号理论与传统的电路设计理论不同,它不是以门电路或其它集成块为基本单元,而是以开关元件为构造单元.本文应用开关-信号理论指导二变量基本对称函数产生器及双向对称模拟开关的设计,并提出了基于双向对称模拟开关的对称函数的电路实现.
XUYue-hua(徐月华)   +1 more
doaj   +2 more sources

New method of detecting symmetry of Reed-Muller type symmetric function with partial negated variables(部分变量取反的RM型对称函数检测的新方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2002
分析了函数的RM展开式中乘积项所含的部分变量取反引起的变化,在此基础上提出了直接检测部分变量取反的RM型对称函数的新方法.
LIUGuan-sheng(刘观生)   +2 more
doaj   +2 more sources

Two-dimensional shape intrinsic symmetry detection algorithm based on functional map(基于函数映射的二维形状内蕴对称检测算法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2023
针对现有的二维形状内蕴对称检测方法表现欠佳的问题,提出了基于函数映射的二维形状内蕴对称稠密点对应谱优化(FM-2DSISD)方法。首先,设计了对噪声数据鲁棒的稀疏特征对称点对提取算法。其次,利用特征对称点对和函数映射框架,建立了以保持函数映射矩阵每个主子矩阵对角正交性为优化目标的数学模型,证明了该优化目标能保持内蕴对称映射的等距性。借助谱上采样技术,通过频谱域和空间域交替迭代优化函数映射矩阵和逐点映射矩阵。数值实验表明,FM-2DSISD方法对二维光滑形状和噪声形状的检测效果均优于现有检测方法。
刘圣军(LIU Shengjun)   +3 more
doaj   +1 more source

Recognition algorithm of non punctured polarization codes based on structural characteristics of coding matrix [PDF]

open access: yes, 2022
In order to solve the problems of complexity and poor error adaptability in the blind recognition of standard non-punctured polarization codes, the theorems and propositions that could characterize the relationship between the code length and code rate ...
Guodong YANG   +3 more
core   +1 more source

Synthesis of symmetric functions based on RM type universal logic module ULM3(基于RM型通用门ULM3的对称函数综合)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2008
阐述了基本RM型对称函数的定义和性质,给出了任意n变量对称函数在n — 1变量基本RM型对称函数完备集中展开系数的计算公式,在此基础上,提出了基于RM型三变量通用逻辑门ULM3的变量数为奇数或偶数的对称函数综合方法,实例验证了上述方法的有效性.
QIUXiao-hua(邱晓华)   +1 more
doaj   +1 more source

Equivalent characterization of resilient rotation symmetric functions with q number of variables over GF(p) [PDF]

open access: yes, 2014
Baesd on the property of the l-value support tables of the resilient rotation symmetric functions (RSF) with q number of variables, an equivalent characterization on the resilient RSF with q number of variables is derived.
GJie ZHAN   +3 more
core   +1 more source

Extended algebraic immunity of symmetric Boolean function [PDF]

open access: yes, 2014
Boolean functions with optimal algebraic immunity play an important role in stream ciphers.Based on the univariate polynomial representation of Boolean functions,a construction of Boolean functions with maximum extended algebraic immunity (EAI) is ...
Gao-fei WU   +3 more
core   +1 more source

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