Many CAD users dismiss schematic capture as a necessary evil in the process of creating PCB layout but WE have always disputed this point of view. With PCB layout now offering automation of both component placement and track routing, getting the design into the computer can often be the most time consuming element of the exercise. And if you use circuit simulation to develop your ideas, you are going to spend even more time working on the schematic.
標(biāo)簽： schematic necessary creating dismiss
上傳時(shí)間： 2014-01-25
上傳用戶：WMC_geophy
The Bit Array structure provides a compacted arrays of Booleans, with one bit for each Boolean value. A 0 [1] bit corresponds to the Boolean value false [true], respectively. WE can look at a stream of bytes as a stream of bits each byte contains 8 bits, so any n bytes hold n*8 bits. And the operation to manipulate this stream or bits array is so easy, jut read or change the bits state or make any Boolean operation on the whole bits array, like 鈥楢ND鈥? 鈥極R鈥? or 鈥榅OR鈥?
標(biāo)簽： structure compacted Booleans provides
上傳時(shí)間： 2014-01-15
上傳用戶：壞天使kk
Serial UART open source core. The design is engineered for use as a stand alone chip or for use with other of our cores. The reason for developing the Serial UART core is the fact, that asynchronous serial communication is very common that almost every machine understands it.Also, for OCRP-1, WE needed a way of communication with a host computer, to make it available over the net.
標(biāo)簽： engineered for use Serial
上傳時(shí)間： 2017-03-11
上傳用戶：aa17807091
This is the Low Energy Adaptive Clustering Hierarchy routing protocol [LEACH] source code for wireless sensor network WE have used.It is developed with MatLab7
標(biāo)簽： Clustering Hierarchy Adaptive protocol
上傳時(shí)間： 2013-12-09
上傳用戶：362279997
Fast Fourier Transform poWEr point The rectangular window introduces broadening of any frequency components [`smearing鈥? and sidelobesthat may overlap with other frequency components [`leakage鈥?. 鈥he effect improves as Nincreases 鈥oWEver, the rectangle window has poor properties and better choices of wncan lead to better spectral properties [less leakage, in particular] 鈥搃.e. instead of just truncating the summation, WE can pre-multiply by a suitable window function wnthat has better frequency domain properties. 鈥ore on window design in the filter design section of the course
標(biāo)簽： rectangular introduces broadening Transform
上傳時(shí)間： 2017-03-25
上傳用戶：change0329
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.
標(biāo)簽： invisibility constructed proposed electrom
上傳時(shí)間： 2013-12-18
上傳用戶：13215175592
A cylindrical wave expansion method is developed to obtain the scattering field for an ideal two-dimensional cylindrical invisibility cloak. A near-ideal model of the invisibility cloak is set up to solve the boundary problem at the inner boundary of the cloak shell. WE confirm that a cloak with the ideal material parameters is a perfect invisibility cloak by systematically studying the change of the scattering coefficients from the near-ideal case to the ideal one. HoWEver, due to the slow convergence of the zeroth order scattering coefficients, a tiny perturbation on the cloak would induce a noticeable field scattering and penetration.
標(biāo)簽： cylindrical scattering expansion developed
上傳時(shí)間： 2017-03-30
上傳用戶：lhc9102
In an electromagnetic cloak based on a transformation approach, reduced sets of material properties are generally favored due to their easier implementation in reality, although a seemingly inevitable drawback of undesired reflection exists in such cloaks. Here WE suggest using high-order transformations to create smooth moduli at the outer boundary of the cloak, therefore completely eliminating the detrimental scattering within the limit of geometric optics. WE apply this scheme to a non-magnetic cylindrical cloak and demonstrate that the scattered field is reduced substantially in a cloak with optimal quadratic transformation as compared to its linear counterpart.
標(biāo)簽： electromagnetic transformation properties approach
上傳時(shí)間： 2017-03-30
上傳用戶：pkkkkp
LM3S系列ARM用GPIO模擬并行總線擴(kuò)展32KB SRAM PF0～PF7 D0～D7（數(shù)據(jù)總線） PA0～PA7 A0～A7（地址總線低8位） PB0～PB7 A8～A15（地址總線高8位） PB7 /CE（片選） PC4 /WE（寫使能） PC5 /OE（讀使能） 32KB SRAM 映射在地址0x0000～0x4FFF之間 為了加快訪問速度，軟件上將采用寄存器方式進(jìn)行操作 PB7原為/TRST功能，現(xiàn)在也解放出來作為地址線A15
上傳時(shí)間： 2014-01-01
上傳用戶：wlcaption
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問進(jìn)行有效的控制，從而保證了系統(tǒng)的安全性
標(biāo)簽： 用戶 授權(quán) 身份認(rèn)證
上傳時(shí)間： 2013-12-31
上傳用戶：VRMMO
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