HS_VaR_Backtest

single degree of freedom numerical integration for structural dynamics

Software-defined radios (SDRs) have been around for more than a decade. The first complete Global Positioning System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS).

说明：  利用Crank-Nicolson 方法解决偏微分方程(using Crank-Nicolson solution PDE)

Important simulations in digital communication BPSK AWGN+RAY channels.

说明：  模型中明显地体现出模型设计主要有电流调节器和转速调节器两个负反馈闭环组成， 把转速调节器的输出当成电流调节器的输入，在通过电流调节器的输出控制后面的电路。 在这里电流环为内环，电压环为外环，所以形成了转速电流双闭环控制的直流调速系统。(The model obviously shows that the design of the model mainly consists of two negative feedback loops: current regulator and speed regulator, Take the output of the speed regulator as the input of the current regulator, and control the circuit behind it through the output of the current regulator. Here, the current loop is the inner loop and the voltage loop is the outer loop, so a DC speed regulation system with speed current double closed loop control is formed.)

Gini系数典线拟合算法,包含传统数值方法与曲线拟合法比较!(Gini coefficient calculation!)

LTE-A异构网的能效仿真研究.pdf (LTE-A can emulate true heterogeneous network research.pdf)

信噪比估计 使用数值积分的方法计算 离散采样信号(SNR estimation using the method of numerical integration of computing discrete sampling signal)

apple diseas identification apple leaf

处理信号的时频分析，采用了小波去噪的思想，比较了软阈值，硬阈值及当今各种阈值计算方法。( When processing a signal frequency analysis, Using wavelet denoising thought, Comparison of soft threshold and hard threshold and today various threshold calculation method.)