scheme theorem 中文意思是什麼
scheme theorem
解釋
模式定理-
This dissertation investigates both existence of traveling wave solutions for delayed reaction diffusion systems and lattice differential equations, and global attractor of spatially discretized fitzhugh - nagumo equations with dirichlet or neumann boundary conditions. for delayed reaction diffusion systems, the existence of traveling wavefronts in diffusive and coorperative system with time delays is provided, firstly ; the monotone iteration scheme, together with upper - lower solution technique, is applied to establish the existence of traveling wavefronts of delayed reaction diffusion systems with some zero diffusive coefficients. secondly, schauder fixed point theorem is applied to some operators to prove the existence of traveling wave solutions in a properly subset equipped with exponential decay norm, which is obtained from a pair of upper and lower solutions for delayed reaction diffusion systems with non - quasimonotoiiicity
對于時滯反應擴散方程，我們先利用吳建宏和鄒幸福[ j . dynam . diff . eqns2001 （ 3 ） ]中的主要定理來研究時滯競爭擴散lotka - volterra系統波前解的存在性，給出了這個定理在非線性項滿足弱擬單調條件（ qm * ）時在系統情況中的應用；並利用單調迭代方法和上、下解技術，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理。 -
The details of the construction and characteristics of the new finite - difference scheme are presented in this thesis, by using both the integration theorem and the taylor expansion theory. it is proved that the new approach has the second - order accuracy on the grids with axis - symmetric voronoi cells and at least has the first - order accuracy in general. according to this character of the scheme and the computational requirements of the finite - difference approach, a striping procedure is involved to decompose the velocity model into variable spatial size grids with a nearly constant tune step preserved
本文從積分定理和taylor展開兩個角度，詳細分析了基於voronoicell的非規則網格有限差分演算法的構造過程及性質，並且在理論上證明了本文的差分方法的精度與網格形狀的關系：當voronoicell為關于節點的軸對稱圖形時，本文差分方法具有二階精度；在一般的網格上，則至少具有一階精度。 -
So the paper combined the fuzzy logic control and recurrent neural network, and the recurrent fuzzy neural network ( rfnn ) controller is introduced into the speedsensorless vector control system. moreover, an online parameter training methodology, which is derived from the lyapunov stability theorem and gradient descent method is proposed to increase the learning capability of the rfnn. the rfnn controller has a better performance than the pi controller system ; the effectiveness of the proposed control scheme is verified by simulation results
因此論文將模糊控制和具有優越動態性能的遞歸神經網路結合起來，取長補短，提出了一種遞歸模糊神經網路控制方法，利用神經網路來實現模糊推理，可動態的調整隸屬函數的形狀、位置以及神經網路遞歸權值，並對其與pi控制器的交流調速控制系統進行了模擬比較，模擬結果表明與普通的pi控制器相比較，遞歸模糊神經網路控制器有較好的動態性能，控制器的收斂速度快、靜差小，系統在遇到參數發生變化和外部不確定性問題時魯棒性、抗擾動性有明顯的提高。 -
Based on the previous work and current research, we have made the following work : ( 1 ) for robustness against jpeg compression, we analyze the invariant properties theorem during jpeg compression which was proposed in previous work, then proposed an improved scheme. based on those work, we design a watermarking algorithm, which has robustness against jpeg compression with common quality factor. in addition, the proposed algorithm can perfectly detect the watermarks without degrading the visual quality of original image
根據不同的應用需求設計相應的水印演算法是魯棒性水印的研究方向，根據這些特點，本文在前人研究的基礎上，完成了以下工作： （ 1 ）本文就抗jpeg壓縮的水印設計進行了研究，通過分析前人提出的jpeg壓縮不變性原理，發現了其在實際應用中會出現的問題，並對之提出了改進的方案，在此基礎上，設計了一種水印演算法，可以對所有常用質量因子的jpeg壓縮都免疫。 -
Based on a one - dimensional cellular automata and the chinese remainder theorem, a new multi - secret sharing scheme was proposed in this paper
摘要基於一維細胞自動機和中國剩餘定理提出了一個新的多秘密共享方案。 -
Through presentation and discussion of traditional wavelet construction with lifting scheme, the multiwavelet construction with lifting scheme is introduced. the extension of vetterli - herley theorem under multiwavelet condition is overall proved in detail. based on equivalent scalar filters banks, a kind of multiwavelet construction with lifting scheme and corresponding theorem are proposed
通過介紹基於提升格式構造傳統小波的內容，引入基於提升格式構造多小波的研究，對vetterli - herley定理在多小波中擴展進行詳細全面地證明，提出了一種基於等效標量濾波器組的提升格式構造多小波的實現框架和定理，並通過實例驗證該方案的可行性。 -
Based on lifting scheme and cohen - daubechies - feauveau theorem constructing biorthogonal wavelets, we construct a new symmetric biorthogonal 9 7 tap wavelet ( ls97 ). the compression performance of the ls97 wavelet is almost the same as that of cdf 9 7 wavelet, which is adopted by jpeg2000. furthermore, the inverse of ls97 wavelet can be replaced by cdf 9 7 wavelet in image compression, and vice versa
以構造雙正交小波的cohen - daubechies ? feauveau定理為基礎，利用提升方法設計了一組對稱雙正交9 / 7小波濾波器，它與jpeg2000中採用的cdf9 / 7小波壓縮性能幾乎相同，並且它們兩者在圖像壓縮中可以互相做正變換與逆變換。
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