GA(PSO)

梯度下降算法实现单变量线性回归，在matlab中(Gradient descent algorithm for single variable linear regression)

说明：  介绍了国际上典型一流城市中压配电网结构模式， 总结归纳了中压配电网网架结构在提高供电可靠性、 减少停电时间上的作用。 对比分析了现状中压电缆网大分支网架结构的改造方式， 总结提炼并形成适用于福州地区建设世界一流城市配电网的中压电缆网网架结构， 提出双环网、 单环网的典型接线模式， 包括主干线路和分支线路的接线形式， 并进行了可靠性计算和论证， 用以指导福州地区世界一流城市电网建设。(This paper introduces the structure mode of medium-voltage distribution network in typical first-class cities in the world, and summarizes the role of the structure of medium-voltage distribution network in improving the reliability of power supply and reducing the blackout time. This paper compares and analyses the transformation modes of the large branch network structure of medium voltage cable network, summarizes and refines the medium voltage cable network structure suitable for constructing the world-class urban distribution network in Fuzhou, and puts forward the typical connection modes of double-loop network and single-loop network, including the main line and branch line, and carries out the transformation. Reliability calculation and demonstration are carried out to guide the construction of the world-class urban power grid in Fuzhou.)

本实验完成发光二极管的循环点亮实验，由于输入晶振为20M，分频得到count1信号，故每间隔约1S彩灯循环移位一次。 也可以外接32768hz的晶振经4060分频后的1HZclk输入，自己可以尝试改变实验，加以练习。 现象：可以看到流水灯-In this experiment completed the cycle of light-emitting diode light experiments, as a result of the importation of crystal for the 20M, sub-frequency signal received count1, so each interval of about 1S Lantern a cyclic shift. Can also be the external 32768Hz crystal oscillator frequency by 4060 after 1HZclk input, they can try to change the experiment, to practice. Phenomenon: we can see water lights

CELL组件的右键实例，可以帮助VB编程爱好者节约大量时间和精力，直接复制就可以使用。-CELL module right key example, may help VB to program the amateur to save the massive time and the energy, the direct duplication may use.

说明：  uhard subroutine code in fortran for abaqus

说明：  实现了克里金插值，完美滴可以对比普通克里金和泛克里金(The Kriging interpolation is realized, and the perfect droplet can compare ordinary Kriging with Pan-Kriging.)

说明：  python的简单爬虫作业，爬取b站相关视频弹幕(simple python homework)

采用simulink搭建的GPS软件接收机模型，包含从伪码生成、相关接收、捕获、跟踪、解码等完整的流程。内涵解释说明文件，需要用的一定要按照说明配置求解器。(Using Simulink to build the GPS software receiver model, including the pseudo code generation, correlation reception, capture, tracking, decoding and other complete process. Explain the meaning of the document, the need to use the instructions must be configured solver.)

液晶显示屏lcd12864画曲线程序，有直线，正弦等等，各位参考-LCD lcd12864 painting curve procedures, have straight, sinusoidal, etc., you refer to

说明：  2.8寸TFT屏 stm32芯片 +ST7789驱动(2.8 inch TFT screen STM32 chip + ST7789 driver)