在地图上画出各省市边界，北京市密云县json内容如下：{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"id":"110228","name":"密云县","cp":[117.0923,40.5121],"childNum":1},"geometry":{"type":"Polygon","coordinates":[[[116.7586,40.7064],[116.7847,40.7016],[116.7888,40.714],[116.7902,40.727],[116.7819,40.7524],[116.7833,40.7579],[116.7902,40.7517],[116.8025,40.7462],[116.819,40.7504],[116.8272,40.749],[116.8396,40.7607],[116.8341,40.7703],[116.8506,40.7751],[116.8506,40.7785],[116.8671,40.7847],[116.8629,40.7922],[116.8712,40.7943],[116.8739,40.7991],[116.8808,40.7977],[116.8863,40.8012],[116.8959,40.7936],[116.8945,40.7819],[116.8973,40.7778],[116.9234,40.7737],[116.9247,40.7627],[116.9289,40.7565],[116.9234,40.7524],[116.9261,40.7449],[116.9412,40.7401],[116.9453,40.7284],[116.9563,40.7229],[116.9659,40.714],[116.9646,40.7092],[117.0044,40.6968],[117.0195,40.6954],[117.0305,40.692],[117.0497,40.7002],[117.084,40.7023],[117.0964,40.7057],[117.1115,40.7071],[117.117,40.6995],[117.1225,40.7009],[117.1527,40.6968],[117.1664,40.6989],[117.1788,40.6934],[117.1829,40.6975],[117.2063,40.6947],[117.231,40.6844],[117.242,40.6769],[117.2612,40.681],[117.2777,40.6666],[117.2914,40.6597],[117.3257,40.6604],[117.3367,40.6631],[117.3367,40.6666],[117.3463,40.6741],[117.3615,40.6748],[117.3903,40.6837],[117.4068,40.6865],[117.4205,40.6865],[117.4507,40.6796],[117.4644,40.6734],[117.4796,40.6776],[117.4947,40.6748],[117.5056,40.6666],[117.507,40.6549],[117.5029,40.6528],[117.5015,40.6364],[117.4796,40.6357],[117.4713,40.6474],[117.448,40.6419],[117.4301,40.6405],[117.4219,40.6377],[117.4178,40.6185],[117.4136,40.6062],[117.4205,40.5945],[117.4232,40.5821],[117.4301,40.5787],[117.426,40.5732],[117.4205,40.5691],[117.404,40.5739],[117.4013,40.5698],[117.3944,40.567],[117.3889,40.5615],[117.3766,40.5663],[117.3656,40.5759],[117.3505,40.5801],[117.334,40.5766],[117.3106,40.5766],[117.2955,40.567],[117.2667,40.5581],[117.2502,40.5485],[117.253,40.5416],[117.2502,40.5375],[117.2598,40.5196],

适用于电池包于充电机之间带有CC与CP信号上使用

实用java配对加密库，亲测用来运行cp-abe

解决undefinedreferenceto`__gnu_mcount_nc'问题在linux内核编译时出现以下错误:init/built-in.o:Infunction`do_one_initcall':/linux-2.6.30.4/init/main.c:706:undefinedreferenceto`__gnu_mcount_nc'init/built-in.o:Infunction`init_post':/linux-2.6.30.4/init/main.c:804:undefinedreferenceto`__gnu_mcount_nc'init/built-in.o:Infunction`name_to_dev_t':/linux-2.6.30.4/init/do_mounts.c:78:undefinedreferenceto`__gnu_mcount_nc'init/built-in.o:Infunction`rest_init':/linux-2.6.30.4/init/main.c:453:undefinedreferenceto`__gnu_mcount_nc'init/built-in.o:Infunction`calibrate_delay':/linux-2.6.30.4/init/calibrate.c:123:undefinedreferenceto`__gnu_mcount_nc'下载资源补丁，把放到linux源码目录下#cp__gnu_mcount_nc_patch.gz../linux.2.6.30.4解压打补丁#gunzip-dc__gnu_mcount_nc_patch.patch.gz|patch-p1OK!

在DDMS中打开FileExplorer选项卡后没有显示文件列表可以尝试更新d:\eclipse\configuration\org.clipse.osgi\85\0\.cp\libs目录下面的ddmlib.jar文件

TCD2252D芯片驱动电路的IC实现，sh，sp，rs，cp，F1,F2波形

在OFDM调制技术原理中，在数模转换之前必须有添加循环前缀CP的环节，对原始数据进行变换，同时模数转换之后又需要去循环前缀。
这里提供了CP的添加和删除函数。

（汽车交流充电桩充电握手信号原理图）小白也能看得懂，可以直接做充电柱国标交流充电桩CP信号电路，可以直接改充电桩3KW和7KW

用于CP_ABE相关方案的编程。
Thecpabetoolkitprovidesasetofprogramsimplementingaciphertext-policyattribute-basedencryptionscheme.ItusesthePBClibraryforthealgebraicoperations.NotethatthecpabetoolkitmightnotcompileagainstversionsofPBColderthan0.5.4.

正交频分复用(OFDM)是第四代移动通信的核心技术。
该文首先简要介绍了OFDM基本原理,重点研究了理想同步情况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。
在给出OFDM系统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。
最后给出在不同的信道条件下,保护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。
作者：吕爱琴,田玉敏,朱明华

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。