1001-5965(2013)04-0564-05

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. )

Mann-Kendall检验方法的matlab程序(The matlab model for Mann-Kendall test method)

全面分析机械类个企业的经济效益，以一家公司的盈利额为研究对象，选择了8个不同的利润指标，14企业关于这8个指标的统计数据如下表所示，试进行主成分分析。(Comprehensive analysis of the economic efficiency of enterprises machinery months to a company' s earnings amounted research object, select 8 different profit targets, 14 companies on these eight indicators of statistical data in the following table and try to principal component analysis.)

麻省理工学院introduction to matlab课程作业指导，包含matlab实例，相互交流(excellent matlab exercises homework for improving matlab )

说明：  "lvrt of doubly fed induction matchine by using crowbar" simulation in simulink of matlab that initialization condutions will be uploaded in another file

说明：  k-means算法实现以及Iris数据集(Implementation of K-means algorithm and Iris data set)

混沌时间序列法，该程序用加权一阶局域法对数据进行进行一步预测(Chaotic time series method, the program step forecast data weighted one-rank local law)

本程序是矩形域高斯二重积分，利用matlab编写而成(This procedure is a double integral Gaussian rectangular domain, using matlab prepared)

采用线性插值的反radon变换，按照原理直接编的，要求tau-p域中的p都是从正数开始的(Code in accordance with the principle of direct linear interpolation of the anti-radon transform, the tau-p domain p from positive)

此程序是LMFnlsq2.rar主程序调用的一个函数，此函数不可或缺，需要联合使用。(This program is LMFnlsq2. Rar main program calls a function, this function is indispensable, need to use.)