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文章讲述了现在韩国的频谱政策和动态频谱接入技术。过去韩国的频谱管理政策需要特权，并且只有一小部分频谱可以公用。随着无线技术的发展，现在，韩国政府，使用了机遇动态频谱接入的新型频谱策略，例如LBT技术用于REID，UWB和FACS等。MIC还考虑如何在DTV过渡完成后，重新分配频谱。新型的无线电技术如认知无线电和SDR将在UHF边带中应用新的服务。MIC试图用一用有效地方式开放频谱并接受新技术用于频谱策略中。(In this paper, we introduce spectrum policies and dynamic spectrum access technologies in Korea. In the past, Korea spectrum management was the command and control with exclusive usage rights and small portions of spectrum commons bands. With the development of the radio technologies, Recently, Korea government, MIC(ministry of information and com- munication), has been adopting new spectrum policies based on dynamic spectrum access technology such as LBT(Listen Before Talk) for RFID, UWB, and FACS(Flexible Access Common Spectrum) etc. MIC is also considering spectrum reallocation of digital dividend bands after DTV transition. New radio techniques such as cognitive radio and SDR will be applied to new services in this UHF band. MIC is trying to open the radio spectrum in an efficient way and adopt new technology into spectrum policy. Thus MIC is extending the open spectrum such as spectrum commons and spectrum liberalization bands. )

梁在横向荷载作用下的挠度曲线和应力分布，matlab实现的有限元程序，单元为Wilson非协调元 将matlab工作目录设为解压后的文件夹 依次执行 main postprocessing 两条命令(Matlab Program for FEA)

说明：  模型以永磁直驱同步发电机组为研究对象，对包括风力机、发电机及其控制系统等各部分进行控制建模与仿真，接着通过坐标变换，分析并网逆变器在d／q坐标系下的模型，采用基于d轴电网电压定向矢量控制，并通过前馈补偿，实现有功、无功的解藕独立控制.(The model takes the permanent magnet direct drive synchronous generator set as the research object, and carries on the control modeling and simulation to each part, including wind turbine, generator and its control system, and then analyzes the model of grid-connected inverter in d coordinate system through coordinate transformation. The voltage oriented vector control based on d-axis power network and feedforward compensation are adopted to realize the decoupling independent control of active and reactive power.)

A simple example showing how to track an object with particle filter. Likelihood is based on Bhattacharya distance of color histogram.

Simulation file for NARX network

this code is about k mean clustering in Matlab

利用chan算法对无线传感网络的定位，还有和其他算法的比较(Positioning chan algorithm for wireless sensor networks, there are other algorithms compare)

链路预测的matlab实验源代码，通过这些源代码可以得出链路预测的基本实验效果(Link prediction matlab experiment source code, the source code can be obtained through these basic experimental results link prediction)

MatLab入门经典英文教程（pdf版）,介绍如何使用MATLAB,对于英语阅读能力教强的人阅读.(MatLab Introduction to the classic English tutorial (pdf version), describes how to use MATLAB, for English reading ability and strong teaching people to read.)

theori jame of mashin elec in matlab mfile