A Javascript Example for Sub Modal Dialog box
標簽: Javascript Example Dialog Modal
上傳時間: 2013-12-20
上傳用戶:chenlong
A 64 sub carrier OFDM system based on the parameter of Mean square error
標簽: parameter carrier square system
上傳時間: 2013-12-27
上傳用戶:yyq123456789
Photonic Bands calculation for square lattice photonic structures
標簽: calculation structures Photonic photonic
上傳時間: 2014-01-16
上傳用戶:zaizaibang
Calculating photonic bands with plane wave expansion method
標簽: Calculating expansion photonic method
上傳時間: 2013-12-18
上傳用戶:kr770906
this is the SUB routine for the prime field and large numbers for ECC or RSA algorithms. with IAR version 5 or above.
標簽: algorithms for the routine
上傳時間: 2017-07-25
上傳用戶:363186
add sub. and or 加法 減法...........
上傳時間: 2013-12-24
上傳用戶:ljt101007
元器件樣本專輯 116冊 3.03GD-sub-jy.pdf
標簽:
上傳時間: 2014-05-05
上傳用戶:時代將軍
We introduce a sub-cell WENO reconstruction method to evaluate spatial derivatives in the high-order ADER scheme. The basic idea in our reconstruction is to use only r stencils to reconstruct the point-wise values of solutions and spatial derivatives for the 2r-1 th order ADER scheme in one dimension, while in two dimensions, the dimension-by-dimension sub-cell reconstruction approach for spatial derivatives is employed. Compared with the original ADER scheme of Toro and Titarev (2002) [2] that uses the direct derivatives of reconstructed polynomials for solutions to evaluate spatial derivatives, our method not only reduces greatly the computational costs of the ADER scheme on a given mesh, but also avoids possible numerical oscillations near discontinuities, as demonstrated by a number of one- and two-dimensional numerical tests. All these tests show that the 5th-order ADER scheme based on our sub-cell reconstruction method achieves the desired accuracy, and is essentially non-oscillatory and computationally cheaper for problems with discontinuities.
標簽: 高精度格式
上傳時間: 2016-01-13
上傳用戶:ccsdcczd
One of the prerequisites for the development of telecommunication services is the understanding of the propagation of the waves, either acoustic, electromagnetic, radio or light waves, which are used for the transmission of information. In this work, we shall limit ourselves to the study of radio waves: this term apply to the electromagnetic waves used in radio communications. Their frequency spectrum is very broad, and is divided into the following frequency bands : ELF waves (f < 3 kHz), VLF (3-30 kHz), LF waves (30-300 kHz), MF waves (300-3000 kHz), HF (3-30 MHz), VHF waves (30-300 MHz), UHF waves (300-3000 MHz), SHF waves (3-30 GHz), EHF waves (30-300 GHz) and sub- EHF waves (300-3000 GHz).
標簽: Propagation Radio Wave
上傳時間: 2020-06-01
上傳用戶:shancjb
采用現場可編程門陣列(FPGA)可以快速實現數字電路,但是用于生成FPGA編程的比特流文件的CAD工具在編制大規模電路時常常需要數小時的時間,以至于許多設計者甚至通過在給定FPGA上采用更多的資源,或者以犧牲電路速度為代價來提高編制速度。電路編制過程中大部分時間花費在布線階段,因此有效的布線算法能極大地減少布線時間。 許多布線算法已經被開發并獲得應用,其中布爾可滿足性(SAT)布線算法及幾何查找布線算法是當前最為流行的兩種。然而它們各有缺點:基于SAT的布線算法在可擴展性上有很大缺陷;幾何查找布線算法雖然具有廣泛的拆線重布線能力,但當實際問題具有嚴格的布線約束條件時,它在布線方案的收斂方面存在很大困難。基于此,本文致力于探索一種能有效解決以上問題的新型算法,具體研究工作和結果可歸納如下。 1、在全面調查FPGA結構的最新研究動態的基礎上,確定了一種FPGA布線結構模型,即一個基于SRAM的對稱陣列(島狀)FPGA結構作為研究對象,該模型僅需3個適合的參數即能表示布線結構。為使所有布線算法可在相同平臺上運行,選擇了美國北卡羅來納州微電子中心的20個大規模電路作為基準,并在布線前采用VPR399對每個電路都生成30個布局,從而使所有的布線算法都能夠直接在這些預制電路上運行。 2、詳細研究了四種幾何查找布線算法,即一種基本迷宮布線算法Lee,一種基于協商的性能驅動的布線算法PathFinder,一種快速的時延驅動的布線算法VPR430和一種協商A
上傳時間: 2013-05-18
上傳用戶:ukuk