說明： GR(M)-87目前只能應用于WINCE5.0版本中，其它版本用不了。 1.該軟件是用來檢測GPS的COM以及GPS信號的軟件，應用廣泛 2.mGpsCmd是PPC(WINCE系統)用的，GpsViewer 1.5是PC和PPC的安裝程序，考到SD卡上就可以直接用！ 用法1：搜索COM口，連上GPS，點SCAN，如果提示找到FOUNDGPS，那么就是對應的COM口 3..在WINDOWS XP/2000系統使用，安裝USB_driver -V2.1.0.exe 驅動程序，串口也通用。 4.安裝GpsViewer 1.5.exe。安裝完后，打開進入界面，COM Port 不用選擇，會自動掃描，見GPS1的圖片；Baudrate：4800. 然后按Scan...進行掃描到串口后，再按Open GPS,即可會自動找到衛星，從圖上或下面的顯示可以看到。見GPS2圖片。 5.GPS天線必須放在室外才有效。 6.GpsViewer， mGpsCmd軟件不會自動刷新，請一會按下最小化，一會再點彈出來，手動刷新。
上傳時間： 2017-03-05
上傳用戶：四只眼
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.
標簽： cylindrical scattering expansion developed
上傳時間： 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.
標簽： electromagnetic transformation properties approach
上傳時間： 2017-03-30
上傳用戶：pkkkkp
We obtained the energy transport velocity distribution for a three dimensional ideal cloak explicitly. Near the operation frequency, the energy transport velocity has rather peculiar distribution. The velocity along a line joining the origin of the cloak is a constant, while the velocity approaches zero at the inner boundary of the cloak. A ray pointing right into the origin of the cloak will experience abrupt changes of velocities when it impinges on the inner surface of the cloak. This peculiar distribution causes long time delays for beams passing through the ideal cloak within a geometric optics description.
標簽： distribution dimensional transport obtained
上傳時間： 2013-12-19
上傳用戶：zhliu007
ScienceOps has answers. Rapid Custom Algorithm development www.ScienceOps.com Simpleware From 3D scan to CAD, FE/CFD, and RP Join our Webinar on March 12th www.simpleware.com Steganography Software Hide Secrets Using this Powerful Steganography Software. $39 InvisibleSecrets.com Develop VoIP softphone SIP softphone SDK (activeX & DLL) Add VoIP in your app/webpages. www.vaxvoip.com
標簽： ScienceOps development Simpleware Algorithm
上傳時間： 2017-04-13
上傳用戶：qlpqlq
3 simple AVR assembler code to use seven segment display. These 3 codes realy simple way using seven segment display. these are using in my microprocessor classes. Wert deney1.asm -> no scan Wert Deney2.asm -> Scan but BCD Werrt Deney3.asm -> Scan with BCD. By Basri KUL
標簽： simple seven assembler segment
上傳時間： 2017-05-07
上傳用戶：13517191407
This program incorporates the FV method for solving the Navier-Stokes equations using 2D, Cartesian grids and the staggered arrangement of variables. Variables are stored as 2D arrays. SIMPLE method is used for pressure calculation. UDS and CDS are implemented for the discretization of convective terms, CDS is used for the diffusive terms. The boundary conditions are set for the lid-driven cavity flow. Only steady flows are considered.
標簽： Navier-Stokes incorporates Cartesian equations
上傳時間： 2017-05-14
上傳用戶：ryb
The 2D CFD Program NaSt2D The program is a 2D solver for the incompressible, transient Navier-Stokes equations including the temperature equation and free boundary problems. It uses finite differences for discretization on a structured equidistant staggered grid, central and upwind (donor-cell) discretization of the convective parts and an explicit time stepping scheme. The free boundary value problems are treated with the MAC technique.
標簽： incompressible Navier-Sto The transient
上傳時間： 2013-11-30
上傳用戶：xfbs821
Solves the incompressible Navier-Stokes equations in a rectangular domain with prescribed velocities along the boundary. The standard setup solves a lid driven cavity problem.
標簽： incompressible Navier-Stokes rectangular prescribed
上傳時間： 2013-11-25
上傳用戶：15736969615
摘 要 文章以空間監控系統為背景,深入研究了JPEG圖像壓縮標準的實現方法,并基于FPGA對其進行了實現和優化。文中給出了詳細的實現方法和優化過程,測試表明達到了很好的效果。 簡單介紹了有損靜態圖像壓縮當前有兩種比較流行的標準JPEG和JPEG2000。說明了用JPEG方法壓縮的原因。 介紹JPEG基本原理：JPEG對灰度圖像的壓縮處理過程主要包括:圖像分割,離散余弦變換(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脈沖編碼調制(Differential Pulse Code Modulation,DPCM)對直流系數(DC),行程長度編碼(Run-Length Encoding,RLE)對交流系數(AC),霍夫曼(Huffman)編碼等。 JPEG標準的特點是離散余弦變換。 比較詳細介紹壓縮系統的構成和實現。實現提及步驟， JPEG壓縮模塊設計和編碼模塊實現細節。
上傳時間： 2013-12-25
上傳用戶：410805624
