復(fù)接入，B/W雙用戶使用直接擴(kuò)頻序列
％ >>>multiple access b/w 2 users using DS CDMA
％ >>>format is : cdmamodem(user1,user2,snr_in_dbs)
％ >>>user1 and user2 are vectors and they should be of equal length
％ >>>e.g. user1=[1 0 1 0 1 0 1] , user2=[1 1 0 0 0 1 1],snr_in_dbs=-50
％ >>>or snr_in_dbs=50 just any number wud do
％ Waqas Mansoor
％ NUST , Pakistan
本規(guī)范定義了可擴(kuò)展標(biāo)記語(yǔ)言[Extensible Markup Language，XML] 緊湊的二進(jìn)制表示方法。設(shè)計(jì)二進(jìn)制X M L內(nèi)容格式是為了減少X M L文檔的傳輸量，使X M L數(shù)據(jù)能在窄帶信道上得到更有效的利用。二進(jìn)制X M L內(nèi)容格式的使用示例請(qǐng)參閱[ W M L ]規(guī)范。
This Program Cotains Eeprom Read-write functions, 4 Bit LCD interface routines, Keyboard Interface with normal Key Input to the 89C52 atmel Microcontroller.
The Window Design Method
The basic idea behind the design of linear-phase FIR filters using the window
method is to choose a proper ideal frequency-selective filter [which always has
a noncausal, infinite duration impulse response] and then truncate its impulse
response hd[n] to obtain a linear-phase and causal FIR filter h[n]. To truncate the
impulse response of the ideal filter a time window w[n] is used. Available windows
in Matlab are rectangular [or boxcar in Matlab], bartlett, hamming, hanning
為 了提高用戶身份認(rèn)證和授權(quán)管理的靈活性，從We b 應(yīng)用系統(tǒng)的安全性角度出發(fā)，討論了
一
種在． N E T F r a me w o r k下保證應(yīng)用程序安全性的身份驗(yàn)證和授權(quán)模型，并給出了模型的具體實(shí)現(xiàn)方法。
該模型利用 F o r ms身份驗(yàn)證方法對(duì)用戶的身份進(jìn)行鑒別。在授權(quán)處理上，模型結(jié)合統(tǒng)一資源定位( u ． J f o r m
R e s o u r c e L o c a t o r , U R L ) 授權(quán)模式和用戶所具有的系統(tǒng)角色，分別從頁(yè)面級(jí)和頁(yè)面操作級(jí)對(duì)用戶的訪問(wèn)進(jìn)行
控制。該模型在企業(yè)局域網(wǎng)環(huán)境內(nèi)能夠提供比較靈活的身份認(rèn)證和基于角色的授權(quán)服務(wù)。實(shí)際應(yīng)用表明，
基于該模型的We b應(yīng)用系統(tǒng)能夠?qū)τ脩舻脑L問(wèn)進(jìn)行有效的控制，從而保證了系統(tǒng)的安全性
