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平面波展开法计算声子晶体带隙
平面波展开法计算声子晶体带隙clear; clc; tic; epssys=1.0e-6; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%a = 0.02; a1 = a* [1 0 0];a2 = a* [0 1 0];a3 = a* [0 0 1];%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%da = 11600; db = 1300; la1a=1.49e10; la1b=4e4; %la2a=4.20e10; %la2b=6e5; f = 0.3; Au = norm(cross(a1,a2)); Rc = 0.008; Ac = pi*(Rc)^2;
- 2022-06-01 06:28:52下载
- 积分：1
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SEG2SGEY
说明： 地震数据文件常用数据格式之间的转换，SEG2，SEGD等格式转SEGY(Seismic data files commonly used data format conversion between, SEG2, SEGD turn SEGY formats)
- 2021-01-16 17:38:50下载
- 积分：1
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kalmanTrackMouse
用kalman滤波算法来跟踪鼠标, 小有意思的程序, 有助于理解kalman算法(Using kalman filter algorithm to track the mouse, a small interesting programs, help to understand the kalman algorithm)
- 2010-06-08 22:18:50下载
- 积分：1
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数据结构C语言版
说明： 《数据结构》这门课程是信息与计算科学专业中一门重要的专业基础课程。当用计算机来解决实际问题时，就要涉及到数据的表示及数据的处理，而数据表示及数据处理正是数据结构课程的主要研究对象，通过这两方面内容的学习，为后续课程，特别是软件方面的课程打下了厚实的知识基础，同时也提供了必要的技能训练。我们主要学习的数据结构包括队列、堆、栈、链表、树和图等。通常情况下，精心选择合适的数据结构可以带来更高的存储效率，因此，数据结构课程在计算机应用专业中具有举足轻重的作用。(Data Structure is an important basic course in information and computing science. When using computers to solve practical problems, it is necessary to involve data representation and data processing, and data representation and data processing are the main research objects of data structure course. Through the study of these two aspects, it lays a solid knowledge foundation for follow-up courses, especially for software courses, at the same time. Necessary skill training is provided. The main data structures we learn include queues, heaps, stacks, linked lists, trees and graphs. Usually, choosing the right data structure carefully can bring about higher storage efficiency. Therefore, the course of data structure plays an important role in computer application specialty.)
- 2020-06-19 02:40:01下载
- 积分：1
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haxi2
又一种有效的哈希算法。。又一种有效的哈希算法。。(a kind of effective hashing algorithm)
- 2020-12-05 19:49:23下载
- 积分：1
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xppaut_latest.tar
XPPOUT latest, Window GUI
- 2015-09-09 13:33:07下载
- 积分：1
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Embedded-in-the-DCT-coefficients-
在图像的DCT系数上嵌入信息，图像为常见的512*512大小的灰度图（实验所用图像为LENA.BMP）。嵌入的信息为一二进制Logo图（实验所用logo图为tj-logo.bmp），该图大小为32*32，共1024个Bit。
1. 在LENA图中嵌入水印，输出嵌入后的水印图像。
2. 对水印图像解码，输出解码后得到的logo图，并统计错误率。
3. 使用不同的嵌入强度进行嵌入，观察其对作品直觉效果和解码效果的影响，绘制相应的曲线。
4. 使用加入噪声、改变对比度、JPEG压缩等攻击方法对水印作品进行攻击，查看解码的效果。
(Information embedded in the DCT coefficients of the image, the image of the common 512* 512 size gray-scale (experimental image LENA.BMP). Information embedded in a binary Logo Figure (used in the experiment logo picture shows the tj-logo.bmp), the plot size 32* 32, 1024 Bit.
LENA Figure embedded watermark, the watermark image output embedded.
(2) logo watermark image decoding, the output decoded Figure statistical error rate.
(3) using a different embedding strength for embedding, observe the works intuitive effects and decoding results, and draw the corresponding curve.
(4) by adding the noise, change the contrast, JPEG compression attack methods to attack, to see the effect of decoding the watermark works.)
- 2012-04-16 18:56:11下载
- 积分：1
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smarttool
非常实用的国密SM2、SM3、SM4算法工具(National Secret SM2, SM3, SM4 Algorithmic Tools)
- 2020-06-26 17:20:02下载
- 积分：1
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LoRaTx
LORA transmitter souce code to upload arduino
- 2016-12-02 15:55:57下载
- 积分：1
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crop-multiple-targets
opencv210版本下vc++程序，读取一帧图中多个目标的位置并将位置信息保存下来 code using opencv210 via vc++，crop multiple targets and save its positions from one frame(code using opencv210 via vc++，crop multiple targets and save its positions from one frame)
- 2013-12-24 15:40:44下载
- 积分：1
