无线应用协议(Wireless Application Protocol,WA P)是WAP论坛经过不断努力得到的成果,它提供了一个业界技术规范,以便开发出适用于各种无线通信网络的应用程序和业务。 WAP规定了适用于多种无线设备的网络协议和应用程序框架,这些设备包括移动电话、寻呼机、个人数字助理( P D A)等。这个规范不但扩充了移动组网技术(如数字数据组网标准)和I n t e r n e t技术(如X M L,U R L,脚本和各种各样的内容格式) ,而且还将推动他们的发展。
标签: Application Wireless Protocol 无线应用
上传时间: 2017-03-13
上传用户:wcl168881111111
为了开发出适用于各种无线通信网络的应用和业务,人们通过不断的努力,制定了一个业界的技术标准和规范,这就是无线应用协议 [ WAP ]。无线应用环境(Wireless ApplicationE n v i r o n m e n t,WA E)是WAP协议的一部分,它定义了各种无线终端,诸如移动电话、寻呼机和个人数字助理(P D A)上使用的应用结构。
标签: 无线通信网络
上传时间: 2017-03-13
上传用户:BIBI
一个能根据心电图信号产生音乐的matlab程序,根据心电信号P, Q, R, S, 和 T的不同产生不同的音乐,用Midi with Piano tamber使产生的声音更好听
上传时间: 2014-01-26
上传用户:日光微澜
IML package provides efficient routines to solve nonsingular systems of linear equations, certified solve any shape systems of linear equations, and perform mod p matrix operations, such as computing row-echelon form, determinant, rank profile, inverse of a mod p matrix.
标签: nonsingular efficient equations certifie
上传时间: 2017-03-21
上传用户:leixinzhuo
It was proposed that perfect invisibility cloaks can be constructed for hiding objects from electromagnetic illumination (Pendry et al., Science 312, p. 1780). The cylindrical cloaks experimentally demonstrated (Schurig et al., Science 314, p. 997) and theoretically proposed (Cai et al., Nat. Photon. 1, p. 224) have however simplified material parameters in order to facilitate easier realization as well as to avoid infinities in optical constants. Here we show that the cylindrical cloaks with simplified material parameters inherently allow the zeroth-order cylindrical wave to pass through the cloak as if the cloak is made of a homogeneous isotropic medium, and thus visible. To all high-order cylindrical waves, our numerical simulation suggests that the simplified cloak inherits some properties of the ideal cloak, but finite scatterings exist.
标签: invisibility constructed proposed electrom
上传时间: 2013-12-18
上传用户:13215175592
The double-density DWT is an improvement upon the critically sampled DWT with important additional properties: (1) It employs one scaling function and two distinct wavelets, which are designed to be offset from one another by one half, (2) The double-density DWT is overcomplete by a factor of two, and (3) It is nearly shift-invariant. In two dimensions, this transform outperforms the standard DWT in terms of denoising however, there is room for improvement because not all of the wavelets are directional. That is, although the double-density DWT utilizes more wavelets, some lack a dominant spatial orientation, which prevents them from being able to isolate those directions.
标签: double-density improvement additional critically
上传时间: 2017-04-03
上传用户:dongbaobao
Thinking in Java(java编程思想) 第三版+第四版(完整中文版电子书+配套习题答案) 本资料包括四部分内容: 1、Thinking in Java 3th Edition.pdf为java编程思想第三版,是中文版,pdf格式,不是扫描版,非常清晰,与实际的书内容一模一样 2、Thinking in Java 3th Edition习题及答案.chm为第三版的配套习题参考答案; 3、Thinking in Java 4th Edition.pdf是pdf格式,非扫描版,完整版,绝对不会少一丁点内容 ; 4、Thinking in Java 4th Edition答案.zip是由xiaotingdu分章整理,该部分下载者可自己调试再次整理发布,以求更好;
上传时间: 2017-04-04
上传用户:1101055045
本人做的从虚拟机的硬盘直接启动vxworks,直接用vmware打开,启动时先用手动启动,回车用p命令查看参数,然后修改主机参数。后面就不用再说了...
上传时间: 2017-04-07
上传用户:dianxin61
还在为“基于MATLAB的OFDM系统仿真”的朋友,可以看看我总结的资料! 该代码通过综合了本站中的两个源代码,在MATLAB 7.0下完成OFDM系统的完美仿真:音频数据采集->S/P转换->16QAM映射->IFFT处理->添加CP->P/S->理想/多径信道传送->……(FFT等)->传输结果比较(前后频谱图、可以直接通过听前后的音频文件来辨别系统的好坏-理想信道时音质前后相同)。在此还要感谢那两位站员提供相关的代码,也希望能对其他人有帮助。更希望本站能吸引更多的编程爱好者再创佳绩。
上传时间: 2014-12-02
上传用户:zhangyi99104144
进程间通信14 说明了进程控制原语并且观察了如何调用多个进程。但是这些进程之间交换信息的 唯一方法是经由f o r k或e x e c传送打开文件,或通过文件系统。本章将说明进程之间相互通信的 其他技术—I P C(InterProcess Communication)。
上传时间: 2013-12-03
上传用户:zhenyushaw