community.py

数据库功能展示，vc连接access数据库，实现增删查找功能(Database function display, vc connection access database, add or delete search function to achieve)

一个很小的支出收入管理系统-a small expenditure and revenue management system

本文分析微网中微电源包括光伏发电、风力发电、微燃机、柴油发电机和燃料电池的电气特性，构建微电网优化运行的模型，以微网的经济成本和环境成本最小为目标函数，充分考虑了电压越限、功率平衡、微电源出力限制等约束条件，应用鸡群算法进行求解。 解决了粒子群算法易早熟、易陷入局部最优解的问题。并通过典型的微网系统进行仿真分析，仿真结果验证了该算法的有效性。(In this paper, the electrical characteristics of micro-power sources in micro-grid, including photovoltaic power generation, wind power generation, micro-gas engine, diesel generator and fuel cell, are analyzed. The optimal operation model of micro-grid is constructed. The objective function is to minimize the economic cost and environmental cost of micro-grid. The constraints of voltage overshoot, power balance and output limitation of micro-power are fully considered. The chicken swarm algorithm is applied to solve the problem. Particle swarm optimization (PSO) is easy to premature and fall into local optimal solution. The simulation results of a typical microgrid system show the effectiveness of the proposed algorithm.)

说明：  北京航空航天大学，第一次大作业，迁移扩散方程(Beijing University of Aeronautics and Astronautics, the first major operation, the migration-diffusion equation)

Turbo码matlab程序，对学习、课程设计以及毕业设计有比较大的帮助(Turbo code matlab program, to study, curriculum design and graduation design is of great help.)

[FIF]ASP互动视频VIP教程下载8.4.1留言系统之留言、显示留言-[FIF] ASP Tutorials VIP Interactive Video Message System 8.4.1 download messages, display messages

说明：  MODULATION EXPIREMENT FOR TELECOMMUNICATION STUDENTS

使用VTK画红色五角星 并填充采用分段填充的方法，利用数学公式精确计算坐标-The use of VTK painting filled with a red five-pointed star and the sub-fill method, using mathematical formulas accurately calculate the coordinates

应用背景通过遗传算法实现S盒的产生以及其对应电路的设计关键技术C，演化电路，遗传算法，在没有人为干预的条件下，自动设计出满足约束条件的S盒及其实现电路

说明：  利用ansys apdl命令建立一个悬索桥的模型，(APDL command suspension bridge model)