data-management

实现字符串比较的功能，是C语言课程老师布置的作业，(To realize the function of string comparison is the assignment of C language course teachers.)

Flash图片翻页特效带数字按钮，十分唯美的图片效果，带有图片边框，右下角是数字按钮，点击即可控制图片切换，采用淡入淡出的渐变效果。

说明：  用遗传算法求解带模糊时间窗的VRP问题，注释清晰明了，新手友好(Genetic algorithm for VRP with fuzzy time window)

The Complete Algorithm for the Knapsack Problem via Dynamic Programming in C++.

说明：  单片机初学者必备，看看就知道，可以下载学习，很有帮助(SCM beginners essential to see to know, you can download learning helpful)

科研助力的工具，利用a.ishadowx.net/使用(Tools for scientific research)

说明：  利用C++实现与SQL server通讯，代码无误，需按照连接语句自建数据库，VS2019调试成功。(Using C + + to realize communication with SQL server, the code is correct, the database needs to be built according to the connection statement, vs2019 debugging is successful.)

说明：  以广域相量测量系统为技术平台，建立基于模型预测控制的含规模化风电场/群互联电网的负荷频率分散预测控制模型。以典型双区域负荷频率控制模型为例，考虑不同风电渗透率情况。仿真研究结果表明，所提基于模型预测控制的负荷频率分散控制模型不但能够有效地跟踪风电输出功率的随机波动， 维持系统频率及区域间交换功率在较小的范围内变化， 并且控制效果明显优于常规 PI 型负荷频率控制器。(Based on the wide area phasor measurement system (WAPMS), a decentralized load-frequency predictive control model for large-scale wind farm/cluster interconnected power grids based on model predictive control (MPC) is established. The typical two-zone load frequency control model is taken as an example to consider the different wind power permeability. The simulation results show that the proposed decentralized load frequency control model based on model predictive control can not only effectively track the random fluctuation of wind power output, but also maintain the change of system frequency and inter-area exchange power in a small range, and the control effect is significantly better than that of conventional PI load frequency controller.)

遗传算法是一个处理最优解问题的经典算法，通过设定初值，迭代次数和交叉变异概率等一些参数，能够达到很好的寻优效果，本手册通过对遗传算法的进一步解释，能够帮助同行们深入理解遗传算法，里面的一些仿真说明，对于即可使用的同行也有很大的帮助。(Genetic algorithm is a classical algorithm dealing with the optimal solution problem. By setting some parameters such as initial value, iteration times and crossover mutation probability, it can achieve a good optimization effect. Through further explanation of genetic algorithm, this manual can help peers to understand genetic algorithm deeply. Some simulation instructions in this manual are also very helpful to peers who can use it.)

说明：  基尔霍夫电流定律验证！！！！！！！！！！(Verification of Kirchhoff's law of current)