Although most of the health problems related to fast food aren t felt until middle age -- obesity and diabetes are at an all-time high --- the damage starts before children enter kindergarten.
標(biāo)簽： Although problems obesity related
上傳時(shí)間： 2013-12-15
上傳用戶：hjshhyy
Although most of the health problems related to fast food aren t felt until middle age -- obesity and diabetes are at an all-time high --- the damage starts before children enter kindergarten.
標(biāo)簽： Although problems obesity related
上傳時(shí)間： 2013-12-17
上傳用戶：stewart·
Although most of the health problems related to fast food aren t felt until middle age -- obesity and diabetes are at an all-time high --- the damage starts before children enter kindergarten.
標(biāo)簽： Although problems obesity related
上傳時(shí)間： 2014-02-15
上傳用戶：遠(yuǎn)遠(yuǎn)ssad
Although most of the health problems related to fast food aren t felt until middle age -- obesity and diabetes are at an all-time high --- the damage starts before children enter kindergarten.
標(biāo)簽： Although problems obesity related
上傳時(shí)間： 2014-02-09
上傳用戶：時(shí)代電子小智
The J2EE Architect s Handbook: How to be a Successful Technical Architect for J2EE Applications by Derek Ashmore ISBN:0972954899 DVT Press © 2004 (284 pages) This handbook is a concise guide to architecting, designing, and building J2EE applications. Whether you re architect your first J2EE application or looking to keep your projects on-time and on-budget, you will refer to this handbook again and again.
標(biāo)簽： Architect J2EE Applications Successful
上傳時(shí)間： 2013-12-26
上傳用戶：www240697738
Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification. It can be used as a building block for SIP client software for uses such as VoIP, IM, and many other real-time and person-to-person communication services. The primary target platform for Sofia-SIP is GNU/Linux.
標(biāo)簽： specification open-source User-Agent Sofia-SIP
上傳時(shí)間： 2016-04-10
上傳用戶：watch100
DFT(Discrete Fourier Transformation)是數(shù)字信號(hào)分析與處理如圖形、語音及圖像等領(lǐng)域的重要變換工具，直接計(jì)算DFT的計(jì)算量與變換區(qū)間長度N的平方成正比。當(dāng)N較大時(shí)，因計(jì)算量太大，直接用DFT算法進(jìn)行譜分析和信號(hào)的實(shí)時(shí)處理是不切實(shí)際的。快速傅立葉變換(Fast Fourier Transformation，簡稱FFT)使DFT運(yùn)算效率提高1～2個(gè)數(shù)量級(jí)。其原因是當(dāng)N較大時(shí)，對(duì)DFT進(jìn)行了基4和基2分解運(yùn)算。FFT算法除了必需的數(shù)據(jù)存儲(chǔ)器ram和旋轉(zhuǎn)因子rom外，仍需較復(fù)雜的運(yùn)算和控制電路單元，即使現(xiàn)在,實(shí)現(xiàn)長點(diǎn)數(shù)的FFT仍然是很困難。本文提出的FFT實(shí)現(xiàn)算法是基于FPGA之上的，算法完成對(duì)一個(gè)序列的FFT計(jì)算，完全由脈沖觸發(fā)，外部只輸入一脈沖頭和輸入數(shù)據(jù)，便可以得到該脈沖頭作為起始標(biāo)志的N點(diǎn)FFT輸出結(jié)果。由于使用了雙ram，該算法是流型(Pipelined)的，可以連續(xù)計(jì)算N點(diǎn)復(fù)數(shù)輸入FFT，即輸入可以是分段N點(diǎn)連續(xù)復(fù)數(shù)數(shù)據(jù)流。采用DIF(Decimation In Frequency)-FFT和DIT(Decimation In Time)-FFT對(duì)于算法本身來說是無關(guān)緊要的，因?yàn)閮煞N情況下只是存儲(chǔ)器的讀寫地址有所變動(dòng)而已，不影響算法的結(jié)構(gòu)和流程，也不會(huì)對(duì)算法復(fù)雜度有何影響。
標(biāo)簽： Transformation Discrete Fourier DFT
上傳時(shí)間： 2016-04-12
上傳用戶：lx9076
ET++ is a portable and homogenous object-oriented class library integrating user interface building blocks, basic data structures, and high level application framework components. ET++ eases the building of highly interactive applications with consistent user interfaces following the direct manipulation principle. The ET++ class library is implemented in C++ and can be used on several operating systems and window system platforms. Since its initial conception the class library has been continuously redesigned and improved. It started with an architecture which was close to MacApp. During several iterations a new and unique architecture evolved. A byproduct of the ET++ project is a set of tools, which were designed to support the exploration of ET++ applications at run-time. 設(shè)計(jì)模式一書引用的主要參考例程，一個(gè)跨平臺(tái)的應(yīng)用框架，基于C++實(shí)現(xiàn)，是學(xué)習(xí)面向?qū)ο蟮慕?jīng)典源碼.
標(biāo)簽： object-oriented integrating homogenous interface
上傳時(shí)間： 2016-04-15
上傳用戶：tedo811
很經(jīng)典的空時(shí)編碼書籍，英文版。 "Space-Time Coding Theory and Practice" writen by Hamid Jafarkhani Cambridge Pre
上傳時(shí)間： 2016-04-19
上傳用戶：onewq
新一代的多媒體移動(dòng)標(biāo)準(zhǔn)DVB—H是DVB—T在移動(dòng)接收方面的擴(kuò)展。針對(duì)移動(dòng)接收的特點(diǎn)，DVB—H 提出 了幾項(xiàng)頗受矚目的新技術(shù)，實(shí)現(xiàn)了對(duì)手機(jī)等手持式移動(dòng)終端接收地面數(shù)字廣播電視信號(hào)的良好支持。包括降低能耗、無縫切 換、提高移動(dòng)環(huán)境中的抗干擾能力以及靈活的組網(wǎng)方案等。介紹了DVB—H的系統(tǒng)結(jié)構(gòu)，詳細(xì)討論了DVB—H標(biāo)準(zhǔn)中數(shù)據(jù) 鏈路層的時(shí)間分片(time slicing)和多協(xié)議封裝一前向糾錯(cuò)(MPE—FEC)技術(shù)，并給出一些實(shí)驗(yàn)環(huán)境下的定量分析。
標(biāo)簽： DVB 移動(dòng)接收 多媒體 移動(dòng)標(biāo)準(zhǔn)
上傳時(shí)間： 2016-04-22
上傳用戶：hphh
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