lattice wave 中文意思是什麼
lattice wave
解釋
點陣波-
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 dispersion relation within the long - wave limit is linear, which is the same as that for the bose gas of superfluid phase in the absence of the optical lattice
在長波極限下，色散關系是線性的，這與無外場時的色散關系相同。 -
In the theoretical simulation on the behavior of single helium atom in aluminum, the varieties of energy data including the formation, migration, binding, and dissociation energies for single helium atom at the interstitial, vacancy, grain boundary, and dislocation sites in aluminum lattice were calculated, based on the density functional theories, general gradient approximation and pseudopotential plane wave method. results showed that the most fittable sites for containing helium atoms inside the cell are vacancies. but in the view of the whole lattice, grain boundaries are the best
計算結果表明，晶內he原子擇優佔位區是空位，而在整個晶體范圍，最有利於容納he原子的區域是晶界，位錯容納he原子的能力次於晶界和空位；在fcc -鋁的間隙位中， he原子優先充填四面體間隙位；晶內間隙he原子是可動的，通過間隙he原子的運動，可在晶內聚集，或被空位、晶界、位錯等缺陷束縛。 -
Numerical stability, the other issue of the lattice boltzmann method, is discussed in chapter 5. corresponding to the uniform and shear background flow, the stability of d2q7 d2q9 and d3ql5 model is analyzed through the von neumann linear stability theory, both the conclusion about the mass distribution parameters, the wave number, the relaxation time and the uniform velocity, and the linear stability criterion n r0. 58 are instructive to numerical simulation of flow
第五章考慮了數值方法另外一個方面的問題，在均勻流和剪切流兩種背景流場下，運用vonneumann線性分析法，針對d2q7 、 d2q9及d3q15格子模型，分析了質量分佈參數、波數、鬆弛時間和平均流速等決定模型穩定性的主要參數對模型穩定性的影響，得到了對流場數值計算具有指導意義的一般性結論與線性穩定性標準n r _ e ~ （ 0 . 58 ） 。 -
A revised plane - wave expansion method for quickly calculating the band structure of a photonic crystal of pixel type is used to design a photonic crystal of square lattice with a large absolute band gap at high frequencies
本文用修正後的平面波方法，數值分析了由常見的半導體材料gaas （ = 11 . 4 ）和空氣為介質組成的二維光子晶體的能帶結構，發現了一些有意義的結果。 -
Using a general approach for designing two - dimensional photonic crystals of square lattice, we have found many structures whose absolute band gap hi the low or high frequency range is much larger than what has been reported in the previous literature. to speed up the computation, a fast plane - wave expansion method is introduced for calculating the band structures for such special photonic crystals
最後以gaas和te材料為基礎，通過像素分析法，從理論上提出了多種在低頻、高頻區域有大絕對禁帶的二維光子晶體，並且其禁帶寬度顯著優于所有已有文獻報道的光子晶體結構。 -
In this zone, the ocean wave fields are complex and variable due to the influences such as geological, bottomed, shoaling, ocean - engineering factors and currents in coastal zone etc. so the lattice ( multi - point ) situ - observation is not applied and is not practised based on the economical and practical consideration
特別在長江口區海域，地質、底質、灘塗、海洋建築、航運以及徑流等諸多因素造成波浪場的復雜多變，如依靠多布點的現場觀測在效益上不可取，實際操作也是不可行的。
分享友人