ffd 中文意思是什麼
ffd
解釋
方形自由形狀變形-
In chapter 3, two novel scheduling algorithms are put forward to supporting qos according to bin packing problem. bhps arriving are sent to different queues according to their outport, in each ourport queue, bhps are classified by their priorities and scheduled as a batch. the simulation results shows that ffd and bfd not only can provide qos effectively, but also can improve the average loss function
通過該調度演算法，可以實現高優先級突發對低優先級的搶占，提供服務質量支持，並利用openet模擬軟體對這兩種調度演算法進行模擬。模擬結果表明，基於裝箱問題的ffd和bfd調度演算法不僅能提供有效的qos支持，還能改善系統總體的丟失性能。 -
In the thesis, the fundamental formula of ffd method derives from the square root that is approximated by a continued fraction expansion in the one - way wave equation. optimizations of the parameters of the finite - difference operator improve the validity of the method
本論文用連分式近似單程波波動方程中的平方根導出ffd演算法的基本公式，並對ffd演算法中的有限差分運算元進行了系數優化，進一步提高了計算的有效性。 -
Two approaches to improve the robustness of the detector, each based on a different theirs distortion mechanism. one is based on the modeling as fast fading distortion ( ffd ) whose optimum detector is the segmented replica correlator ( src ). the second approach is replica correlation integration ( rci ) for time spreading channel ( tsd )
從頻率擴展通道（ fastfadingdistortion ， ffd ）和時間擴展通道（ timespreadingdistortion ， tsd ）的形成機理出發建立了目標回波的數學模型，指出ffd和tsd的最佳檢測器分別為分段副本相關器（ src ）和副本相關積分器（ rci ） 。 -
The migration results of the synthetic and ocean field datasets show that this method is correct and effective. several prestack depth migration methods are proposed and unified to the synthetic source record migration method. these methods include plane wave migration with fourier finite difference ( ffd ) extrapolator, maximum energy plane wave migration and prestack migration with phase encoding of areal shot records
通過對本文提出的平面波傅立葉有限差分疊前深度偏移方法、最大能量面炮記錄疊前深度偏移方法和相位編碼面炮記錄疊前深度偏移方法的研究，試算和對比，提出了合成震源三原則，根據這些原則，提出了合成震源概念和合成震源記錄疊前深度偏移方法。 -
At the same time, the optimum detector of ffd and tsd in wavelet domain have been investigated according to properties of cwt. they are wavelet - domain - segmented - replica - correlator ( wdsrc ) and wavelet - domain - replica - correlation - integration ( wdrci ). and we have proved that their performances are consistent with those in time domain
同時又依據連續小波變換的性質推導出ffd和tsd通道小波變換域的最佳檢測器：小波域的分段副本相關器（ wdsrc ）和小波域的副本相關積分器（ wdrci ） ，並從理論和模擬證明了它們與相應的時域檢測器性能的一致性，優于小波域的副本相關器（ wdrc ） 。 -
Also, as it appears in the picture above, as soon as the lava exits the ffd box, it will pop back to its unmodified position
（另外，正如它像上圖一樣，一旦巖漿模型離開ffd變形盒的空間，它將返回未修改時的位置。
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