用C#做得简单数据库管理系统

说明：  用win32提供的同步对象（互斥对象，信号量对象，事件对象），解决兄弟问题(Use the synchronization object provided by win32 (mutual object, semaphore object, event object) to solve the brother problem)

：植物种类识别方法主要是根据叶片低维特征进行自动化鉴定。然而，低维特征不能全面描述叶片信息，识别准确率低，本文提 出一种基于多特征降维的植物叶片识别方法。首先通过数字图像处理技术对植物叶片彩色样本图像进行预处理，获得去除颜色、虫洞、 叶柄和背景的叶片二值图像、灰度图像和纹理图像。然后对二值图像提取几何特征和结构特征，对灰度图像提取 Hu不变矩特征、灰 度共生矩阵特征、局部二值模式特征和 Gabor 特征，对纹理图像提取分形维数，共得到 2183 维特征参数。再采用主成分分析与线性 评判分析相结合的方法对叶片多特征进行特征降维，将叶片高维特征数据降到低维空间。使用降维后的训练样本特征数据对支持向量 机分类器进行训练(plant species identification method is mainly based on blade automatic identification of low dimensional characteristics.However, can not fully describe blade low-dimensional feature information, identification accuracy is low, in this paper A kind of plant leaves recognition method based on multiple feature dimension reduction.First by digital image processing technology to the plant leaf color sample image preprocessing, obtain background color removal, wormhole, petioles, and the blades of a binary image, gray image and texture image.Then the binary image to extract the geometric characteristics and characteristics of structure and characteristics of gray image extraction Hu moment invariants, gray co-occurrence matrix feature, local binary pattern features and Gabor, to extract the fractal dimension of texture image, get 2183 d characteristic parameters.By principal component analysis and linear uation analysis method of combining the characteristics of blade more feature dimensi)

用三种方式解决了八数码问题，其中包含两种估价函数实现，宽度优先实现

用于计算CP范围，通过半径枚举的方法实现CP统计，原理上更加合理。作为整个导航开发来说，会有极为积极的作用。

虚拟制造软件delimia的新闻，本篇文章是我在期刊网上买的，自己阅读，认为很有意义。(Delimia news, this article is my journal online buying, their own reading, that makes sense.)

1、文本串非空且以文件形式存放，统计匹配的词集非空。文件名和词集均由用户从键盘输入； 2、“单词”定义：由字母构成的字符序列，中间不含空格字符且区分大小写； 3、待统计的“单词”在文本串中不跨行出现，它或者从行首开始，或者前置若干空格字符； 4、在计算机终端输出的结果是：单词，出现的次数，出现的位置所在行的行号，同一行出现两次的只输出一个行号； 5、测试数据：将实验的源程序作为测试文件,从中任意选取“单词”作为测试的词集。 ( 1, a text string not empty and with the file form deposit, statistics matching word set not empty. The file name and word set all by users from keyboard input 2, the "words" definition: from letters constitute sequences of characters, and the space character among excluding case-sensitive Three, to the statistics "words" in the text string not an inter-bank appear, it first started from line or, or lead some space character 4, on a computer terminal of the output result is: the words, in the frequency of, appear in the position of the line number did, with a line of output only twice in a line Numbers 5, test data: will the source program as the test files, to freely choose the "words" as a test of the word set. )

TCP 接收端程序，可以同时侦听多个客户端。(TCP Server Receive Data.)

主要用于计算程序员编程时所写的代码的行数，可以很方便的让程序员查看自己所写的代码的行数，方便程序员计算自己的代码量。是一个很好用的东西，很高兴能和大家分享。

MSP430 我们全国电子竞赛老师给的资料(MSP430 National Electronic contest teacher gave us the information)