Description: 这个是一个基于logistic混沌系统单项散列函数，调用get_logisit(int* logisit, int length, int max_value, double XX)函数，返回一组logisitic随机数，随机数的最大值为max_value,初始值XX，随机数由初始值XX唯一确定。在数字水印技术等方面使用非常广泛，也许使用VC语言处理图像或是数字水印方面的用户会经常使用。
谢谢！-This is a logistic chaotic system based on single hash function, call get_logisit (int* logisit, int length, int max_value, double XX) function, the return of a group of logisitic random numbers, random number for the maximum max_value, the initial value of XX, random number from the initial value only to determine XX. In digital watermarking technology is widely used, perhaps using the VC language processing aspects of digital watermarking images or the users will be frequently used. Thanks! Platform: |
Size: 1024 |
Author:莫雨 |
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Description: 通过混沌理论系统产生混沌序列，用三种不同的方法产生二值序列。-System through chaos theory chaotic sequence, using three different methods of binary sequences. Platform: |
Size: 1024 |
Author:zhangqiang |
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Description: 基于混沌理论构建的信号检测系统具有敏感微弱周期信号和对噪声有强免疫力的特点,用于微弱信号检测领
域优势明显。实验室内研究需要产生包括混沌噪声在内的各种噪声,并叠加微弱周期信号作为微弱信号检测系统的信号
源。介绍一种基于LabVIEW平台并结合Matlab计算模块的混沌噪声发生器,可产生典型的3种混沌噪声:Logistic,Duff2
ing,Lorenz形式。该发生器将LabV IEW易于接口实现和Matlab计算精度高、编程简捷的特点相结合,具有结构清晰、通用
性强、易于实现、使用方便的特点。
-Built based on chaos theory, sensitive signal detection system with weak periodic signal and has a strong immunity to noise characteristics of the area for weak signal detection have obvious advantages. Laboratory studies need to generate, including noise, chaos, including a variety of noise and superimposed weak periodic signal as a weak signal detection system, signal source. Introduction of a platform based on LabVIEW and Matlab calculation module with the chaotic noise generator can produce the typical three kinds of chaotic noise: Logistic, Duff2 ing, Lorenz form. The generator will be LabV IEW easy interface, and Matlab calculation of high accuracy, simple programming features combined with a clear structure and versatility, easy to implement, easy to use features. Platform: |
Size: 495616 |
Author:xlmm |
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Description: 一种基于混沌系统和奇异值分解的
零水印算法
改变了传统通过修改图像内容进行版权保护的做法，描述了一种基于混沌理论和奇异值分解（’()*+,-. /-,+0
1023453’()*，678）的零水印方案；利用了93*(’:(2 混沌系统的初值敏感性映射信息隐藏的位置，增强了算法的安全
性；采用了奇异值的不变特性构造注册中心的水印，保证了在不改变宿主图像任何信息的同时进行有效地版权保
护；将有意义的二值图像作为水印图像，解决了零水印方案水印为无意义二值序列的问题；同时深入分析了水印容
量和算法安全性之间的关系 通过对标准测试图像、卡通、医学、风景、遥感、诗画等图像进行实验测试以及和其他
算法比较表明，该算法简单有效，适用性强，而且对滤波、噪声、<=>? 压缩、剪切等攻击表现出了较强的鲁棒性 -A novel zero bit watermarking algorithm based on logistic chaotic system and singuar value decomposition. Platform: |
Size: 275456 |
Author:li |
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Description: Asp.net物资流通管理系统源码
本系统主要针对物流供应链中的库存管理环节，实现了：
1) 货物的入库、出库、调库、借出、借入、调拨、报损、盘点等多种操作流程。
2) 写入各种出入库凭证及凭证查询。
3) 统计仓库账目，以无纸化作业全面代替手工台帐。
4) 准确控制存储物料的数量，以保证稳定的物流，支持正常的生产，支持多仓库操作，货物的批量出入库、调库、盘点、货位管理等。
5) 有效地解决货物的积压、超储、过期、短缺、账目混乱等常见的弊病。
6) 实时的库存信息控制，保证了准时交付。-Asp.net source material circulation management system
This system is mainly for the logistics supply chain inventory management aspects to achieve:
1) the goods out of warehouse, cold storage, lending, borrowing, transfer, reported losses, inventory and other operational processes.
2) write all the storage certificate and the certificate details.
3) Statistical warehouse accounts instead of manual to fully paperless accounting.
4) accurate control of the number of stored materials to ensure the stability of the logistics, support the normal production, multi-warehouse operations, bulk cargo out of storage, cold storage, inventory, cargo space management.
5) effectively address the backlog of goods, super storage, expiration, shortage, chaotic accounts and other common ills.
6) real-time inventory control to ensure on time delivery.
Platform: |
Size: 592896 |
Author:孤城 |
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Description: 采用Logistic混沌系统的三维流程工厂模型数字水印算法-Using Logistic chaotic system of three-dimensional model of digital watermarking process plant Platform: |
Size: 340992 |
Author:mu |
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Description: 提出了一种基于自适应 Chebyshev 多项式神经网络(ACNN)的 Logistic 混沌系统控制算法。该算法采用 Chebyshev
正交多项式作为神经网络的激励函数, 构建 Logistic 混沌系统的预测与控制模型。为了保证算法的稳定性, 提出和证明了收敛定
理, 并利用自适应学习率算法提高神经网络的学习效率和收敛速度。通过采用自适应 Chebyshev 神经网络直接学习 Logistic 混
沌系统的动态特性, 并对系统实施目标函数控制。实验仿真结果表明, 该算法在 Logistic 混沌系统有外部干扰的情况下仍能对其
进行有效控制, 网络学习时间为 0.178 s, 训练步长为 10, 均方误差达到 1.15×10
− 4 , 与其他常见算法相比具有计算量小、速度快、
精度高和网络结构简单等优点。 - A novel algorithm for controlling Logistic chaotic system based on adaptive Chebyshev polynomials
neural networks (ACNN) is presented. In the algorithm, the activation function of hidden units is defined by Chebyshev
orthogonal polynomials in the neural networks, and the forecast and control model of Logistic chaotic system is estab-
lished. In order to ensure stability of the algorithm, the convergence theorem of the algorithm is proposed and proved.
Then the adaptive learning rate algorithm is used for improving the learning efficiency and convergence speed. The
adaptive Chebyshev neural networks directly learn dynamic characters of Logistic chaotic system and control it to target
function. The simulation results show that the algorithm is still effective when there are external disturbance in the Lo-
gistic chaotic system, now the learning time is 0.178s, training steps is 10 and mean square error is 1.15×10 − 4 . Com-
pared with other ordinary Platform: |
Size: 1381376 |
Author: |
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Description: 提高电源的动态响应 非线性和复杂的系统是一个转换器 电力电子的有趣的挑战。摘要介绍了 设计和实现数字PID控制器使用 混沌粒子群优化(复)提振 转换器,提出了自动调优转换器的方法 最优启动响应。当系统启动时,处理器 单元分析了开环启动响应转炉和 在一些迭代使用复准备最佳反应 算法。使用逻辑映射混沌映射序列 增加它的收敛速度和精度。模拟 和实现结果显示提出的效率 方法-Improving dynamic response of DC-DC
converters which are nonlinear and complicate systems is an
interesting challenge in power electronics. This paper presents the
design and implementation of digital PID controller using the
chaotic particle swarm optimization (CPSO) for a Boost
converter and proposes an approach for auto tuning converter
optimum startup response. When the system starts, processor
unit analyses the open loop startup response of converter and
prepares optimum response during some iteration using CPSO
algorithm. Chaotic mapping using logistic map sequences
increases its convergence rate and resulting precision. Simulation
and Implementation results show efficiency of proposed
approach Platform: |
Size: 437248 |
Author:闵国旗 |
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Description: 基于DCT域的数字水印算法主要包括水印调制、水印嵌入和水印提取，首先在嵌入载体图像之前用Logistic混沌序列对水印进行调制，得到一个只有+1和-1随机序列的水印，同时将载体图像进行全局DCT变换，然后将水印图像嵌入人类视觉系统最重要的部分，即DCT最大的系数，DC（Direct Current）部分也包含在这最大的系数中，这部分的系数满足人类视觉特性，会使水印嵌入的性能更好。嵌入算法是将水印与这些系数进行相乘获得新的系数，再用新的系数来替换原来的系数，即获得嵌入水印后的离散余弦域的图像，然后对这个变换后的图像进行IDCT，就会得到需要的水印图像。-While the carrier image digital watermarking algorithm based on DCT domain include watermark modulation, watermark embedding and watermark extraction, the first of the watermark embedded in a carrier modulated image before using Logistic chaotic sequence, only+1 and-1 to get a random sequence of watermark, Global DCT transform, then the watermark image is embedded most important part of the human visual system, i.e. the largest DCT coefficients, DC (Direct Current) in this section also contains the largest coefficient, the coefficient of this part of the human visual characteristics to meet, make watermarks Embed better performance. The watermark embedding algorithm is with these coefficients are multiplied to obtain new coefficients, and then a new factor to replace the original coefficients, namely discrete cosine domain to obtain an image watermarked and then transformed the image of this conduct IDCT, on watermark image will be needed. Platform: |
Size: 4096 |
Author:kelly |
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Description: :目前混沌系统与加密技术相结合是现如今最热门的一个课题，虽然有大量的加密算法面世，但是这些加密算法并不成熟，仍然需要进一步的研究。本文采用像素位置置乱变换和像素值替代变换相结合的加密思想，设计出一种基于混沌的数字图像加密算法。引入了整数域上的逆仿射变换，算法中采用二维 logistic 混沌映射相结合的方法，生成多组混沌序列，像素置乱变换与灰度值替换都由这些混沌序列所控制。多混沌序列产生的密钥空间大于单一的混沌序列所产生的密钥空间，因此本文研究的算法加密强度很高。-The current chaotic system with encryption technology combined is now one of the hottest topics, although there are a number of encryption algorithms available, but these encryption algorithms are not ripe, still need further study. In this paper, the pixel position and the pixel value Scrambling alternative encryption ideological transformation combining design a digital image based on chaos encryption algorithm. The introduction of the inverse affine transformation integer domain, the algorithm uses a two-dimensional logistic chaos mapping method of combining to produce multiple sets of chaotic sequence, scrambling transformation and pixel gray values are replaced by the chaotic sequence control. Key space more chaotic sequence is greater than the key space of a single chaotic sequence generated by the algorithm to encrypt and therefore high strength paper. Platform: |
Size: 836608 |
Author:sanmei |
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Description: 包含了产生逻辑斯蒂映射的代码,以及绘制了逻辑斯蒂映射的分岔图以及李雅普诺夫指数的图像,还有程序运行结果的图像.李雅普诺夫指数在研究动力系统的分岔、混沌运动特征中起着重要的作用,,李雅普诺夫指数大于0,处于混沌状态. -The logistic map contains the code, and draw the image bifurcation diagram of logistic map and Lyapunov exponent, image and program results. The Lyapunov exponent in the study of power system bifurcation and chaotic motion characteristics plays an important role, the Lee Yap Andrianof index is greater than 0, is in a chaotic state. Platform: |
Size: 25600 |
Author:董大牛 |
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Search - logistic chaotic system