elevation

让距离进口10，长度为10的一段边界做振幅为10的正弦振动的程序(A program of sinusoidal oscillation with an amplitude of 10 at a distance of 10 and a length of 10.)

说明：  LSDYNA自定义本构模型文件, 很实用(LSDYNA User Defined Materials)

计算三相四线制电压负序不平衡度，零序不平衡度，(three-phase voltage unbalance factor)

主要功能：1.利用油水井井位坐标绘制井位图；2.利用油水井注采液量数据绘制动态曲线图；3.利用油水井注采液量数据，根据容阻模型对井间连通性进行反演，求取注水井注水量平面分配系数，并进行可视化展示。 技术特点：软件自动读取井位信息及油水井注采液量数据，根据改进的容阻模型，利用基于遗传算法的混合优化算法来对模型进行求解，确定表征注采对应关系的参数——连通系数和时间常数，量化表征了注采对应关系，从而指导油田生产为油田开发管理者提供了科学的决策工具。(Main function: 1. wells wells wells by using the coordinate drawing graph; 2. the use of water injection wells drawing dynamic curve of fluid data; 3. the use of oil and water wells injection fluid volume data, according to the volume resistance model of inter well connectivity inversion for the water injection volume plane distribution coefficient, and visual display. Technical features: the software automatically reads the information and the oil injection wells fluid volume data, according to the volume resistance model improved by genetic algorithm, the hybrid optimization algorithm to solve the model based on the determined parameters correlation characterization of injection - connectivity coefficient and time constant, the quantitative characterization of the injection production relationship, so as to guide the oil field the production provides a scientific decision-making tool for oilfield development management.)

说明：  Command line PDF toolbox, fully registered version. Can work together with FOXIT Reader

雷达方程的总结，包含各种形式的雷达方程MATLAB实现，是学习的好帮手，帮助理解(Radar equation summary, including various forms of radar equation MATLAB implementation, is a good helper to learn, to help understand)

说明：  matlab生成一个随机相位屏，可以模拟大气和电离层，结果为彩色图。(Matlab generates a random phase screen, which can simulate the atmosphere and the ionosphere. The result is a color map.)

说明：  采用相场方法，计算纯物质枝晶生长，标记为相场模型C。(Dendrite growth of pure substance was calculated by phase field method, marked as phase field model C.)

本模型采用矢量控制与SVPWM相结合的方法，应用在低压微电网中。直流源电压为600V，逆变器输出电压为380V，可实现稳定功率输出。模型对网侧控制策略中每一模块尽量做出了说明，方便初学者更快理解三相逆变器控制策略的实现方法，运行效果非常好。(This model adopts the method of combining vector control with SVPWM, which is applied in low voltage microgrid. The DC source voltage is 600V, and the inverter output voltage is 380V, which can achieve stable power output. Each module is explained as far as possible in the network side control strategy. It is convenient for beginners to understand the realization method of the three-phase inverter control strategy faster, and the operation effect is very good.)

实现10杆桁架优化，使用matlab语言结合有限元(Optimization of 10 bar truss)