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  • 本程序是ARM7系列下LPC2148的例程

    本程序是ARM7系列下LPC2148的例程,通过K7I开发板实现的数码管显示 1-2-3-4-5-6-7-8-9-0-A-b-C-d-E-F

    标签: ARM7 2148 LPC 程序

    上传时间: 2017-03-30

    上传用户:1966640071

  • We analyze, both analytically and numerically, the effectiveness of cloaking an infinite cylinder f

    We analyze, both analytically and numerically, the effectiveness of cloaking an infinite cylinder from observations by electromagnetic waves in three dimensions. We show that, as truncated approximations of the ideal permittivity and permeability tensors tend towards the singular ideal cloaking fields, so that the anisotropy ratio tends to infinity, the D and B fields blow up near the cloaking surface. Since the metamaterials used to implement cloaking are based on effective medium theory, the resulting large variation in D and B will pose a challenge to the suitability of the field averaged characterization of " and 碌. We also consider cloaking with and without the SHS (softand- hard surface) lining, shown in [6] to be theoretically necessary for cloaking in the cylindrical geometry. We demonstrate numerically that cloaking is significantly improved by the SHS lining, with both the far field of the scattered wave significantly reduced and the blow up of D and B prevented.

    标签: effectiveness analytically numerically cloaking

    上传时间: 2017-03-30

    上传用户:zxc23456789

  • Here are the functions for Hamming code 7.4 and Extended Hamming code 8.4 encoding and decoding. F

    Here are the functions for Hamming code 7.4 and Extended Hamming code 8.4 encoding and decoding. For 7.4 code, one error per 7-bit codeword can be corrected. For 8.4 code, one error per 8-bit codeword can be corrected and not less than 2 errors can be detected.

    标签: Hamming code and functions

    上传时间: 2014-01-05

    上传用户:Amygdala

  • Study Guide to Accompany Shari Lawrence Pfleeger s Software Engineering: Theory and Practice By F

    Study Guide to Accompany Shari Lawrence Pfleeger s Software Engineering: Theory and Practice By Forrest Shull and Roseanne Tesoriero (very usefull book form student who study Software Engeneering)

    标签: Engineering Accompany Lawrence Pfleeger

    上传时间: 2017-04-10

    上传用户:koulian

  • 为 了提高用户身份认证和授权管理的灵活性

    为 了提高用户身份认证和授权管理的灵活性,从We b 应用系统的安全性角度出发,讨论了 一 种在. N E T F r a me w o r k下保证应用程序安全性的身份验证和授权模型,并给出了模型的具体实现方法。 该模型利用 F o r ms身份验证方法对用户的身份进行鉴别。在授权处理上,模型结合统一资源定位( u . J f o r m R e s o u r c e L o c a t o r , U R L ) 授权模式和用户所具有的系统角色,分别从页面级和页面操作级对用户的访问进行 控制。该模型在企业局域网环境内能够提供比较灵活的身份认证和基于角色的授权服务。实际应用表明, 基于该模型的We b应用系统能够对用户的访问进行有效的控制,从而保证了系统的安全性

    标签: 用户 授权 身份认证

    上传时间: 2013-12-31

    上传用户:VRMMO

  • 首先

    首先,计算出码元符号集中各个码元的累积概率,并存放在F数组里面。 然后,开始循环编码,直至输入序列循环完毕。 最后,将所得的累计概率由小数形式转化成二进制形式。 对解码。首先,计算码元符号集中各个码元的累积概率,并存放在F数组里面。 然后,开始循环解码,此次循环是在码元符号集中,由高概率码元向低概率码元循环,这是由于编码的输出肯定是不大于高概率码元的累积概率的。那么如果我们从高到底循环,所找到的第一个小于编码结果fs的码元即为所译码的码元。 最后,我们可以利用此码元在码元符号集中的位置和其概率分布数组中的位置是一一对应的性质,找到码元并复制到输出数组中去即可。

    标签:

    上传时间: 2017-04-11

    上传用户:cooran

  • -- 本模块的功能是验证实现和PC机进行基本的串口通信的功能。需要在 --PC机上安装一个串口调试工具来验证程序的功能。 -- 程序实现了一个收发一帧10个bit(即无奇偶校验位)的串口控 --

    -- 本模块的功能是验证实现和PC机进行基本的串口通信的功能。需要在 --PC机上安装一个串口调试工具来验证程序的功能。 -- 程序实现了一个收发一帧10个bit(即无奇偶校验位)的串口控 --制器,10个bit是1位起始位,8个数据位,1个结束 --位。串口的波特律由程序中定义的div_par参数决定,更改该参数可以实 --现相应的波特率。程序当前设定的div_par 的值是0x104,对应的波特率是 --9600。用一个8倍波特率的时钟将发送或接受每一位bit的周期时间 --划分为8个时隙以使通信同步. --程序的工作过程是:串口处于全双工工作状态,按动SW0,CPLD向PC发送“welcome" --字符串(串口调试工具设成按ASCII码接受方式);PC可随时向CPLD发送0-F的十六进制 --数据,CPLD接受后显示在7段数码管上。

    标签: bit 程序 PC 模块

    上传时间: 2017-04-12

    上传用户:lgnf

  • This code helps to fuse pet and ct scan images.The file untitled.m opens the interface to load and f

    This code helps to fuse pet and ct scan images.The file untitled.m opens the interface to load and fuse.Demo images are provided in the folder for reference.This code achieved a performance of .7/1

    标签: and interface untitled images

    上传时间: 2014-01-26

    上传用户:jhksyghr

  • LPC vocoder LPC vocoder with several option Graphical user interface Also included several .wav f

    LPC vocoder LPC vocoder with several option Graphical user interface Also included several .wav file as example

    标签: vocoder several LPC Graphical

    上传时间: 2013-12-18

    上传用户:lifangyuan12

  • MATLAB implementation of time series prediction Based on the VQTAM method described in the following

    MATLAB implementation of time series prediction Based on the VQTAM method described in the following papers: G. A. Barreto & A. F. R. Araujo (2004) "Identification and Control of Dynamical Systems Using the Self-Organizing Map" IEEE Transactions on Neural Networks, vol. 15, no. 5.

    标签: implementation prediction described following

    上传时间: 2013-12-22

    上传用户:windwolf2000