computational scheme 中文意思是什麼

computational scheme 解釋
計算電路
  • computational : adj. 計算的。
  • scheme : n 1 計劃；方案；路線；設計。2 系統；配合；組織。3 綱目；表；清單；分類表；大綱。4 謀劃，策劃；詭...
  1. Fractal coding has been proved useful for image compression. it is also proved effective for content - based image retrieval. in the paper, we present a block - constrained fractal coding scheme and a matching strategy for content - based image retrieval. in this coding scheme, an image is partitioned into non - overlap blocks of a size close to that of a query iconic image. fractal codes are generated for each block independently. in the similarity measure of fractal codes, an improved nona - tree decomposition scheme is adopted to avoid matching the fractal codes globally in order to reduce computational complexity. our experimental results show that our coding scheme and the matching strategy we adopted is useful for image retrieval, and is compared favorably with other two methods tested in terms of storage usage and computing time

    分形編碼在圖像壓縮方面取得了很好的效果，同時，分形編碼也能夠用於基於內容的圖像檢索.本文提出了一種基於塊限制的分形編碼演算法和匹配策略，並將它們用於圖像檢索.在我們編碼演算法中，圖像會被預先分成互相不重疊的子圖像塊，然後對這些子圖像進行獨立地分形編碼，從而獲得整幅圖像的分形碼.該編碼演算法能夠在很大程度上減少編碼時間.在進行圖像間相似性的匹配時，我們採用改進的基於九叉樹的分配策略，從而避免全局地進行分形碼的匹配，減少了計算量.實驗結果說明，我們的編碼演算法和匹配策略能夠比較有效地應用於基於內容的圖像檢索，在計算時間和存儲時間上都優于實驗中其它兩種方法
  2. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  3. The main goal of this paper is to make a thorough research for the nine - point difference scheme, make clear its advantages and disadvantages, and improve it in view to its main disadvantages to raise the computational accuracy, speed and efficiency

    本文致力於對九點差分格式作較為徹底的研究，弄清其優、缺點，並針對其主要缺點作出改進，以進一步提高整個計算的精度、速度和效率。
  4. A monotone iterative scheme is developed for proving the existence and uniqueness of the periodic solutions of the nonlinear discrete scheme, and the computational algorithms for the periodic solutions are also provided

    為了證明解的存在唯一性，建立了一個單調迭代演算法，該演算法也給出了一個求解演算法。
  5. Modern statistics, computational mathematics means and computer technology are used to work out the scheme of developing computer software system of hydrological data reorganization, to study the key technology of overcoming the difficult problems

    利用現代統計、計算數學手段和計算機技術，研究制定了開發灌區水文資料整編計算機軟體系統方案、攻克難點的關鍵技術。
  6. Meanwhile, a modified newmark difference scheme and computational procedures has been proposed for fem dynamic incremental load method to the non - linearity of geometry and material

    其後，對撞擊接觸的動力學數值計算原理及關鍵理論方法在連續介質力學框架下進行了初步研究與歸納。
  7. The purpose of this dissertation is to study the lagrangian method and conservative rezonning algorithm. finite volume scheme is used for lagrangian equations of hydrodynamics. because of the pressure gradients " influence upon velocities and energy, computational scheme is proposed for momentum equation on two control volumes in order to suspend the time when the mesh becomes distorted

    本文的目的是研究lagrange方法及重映演算法，主要內容可分為以下幾個方面：首先從積分形式的二維lagrange流體力學方程組出發，用有限體積格式進行計算，考慮壓力梯度分佈對速度和能量改變的影響，構造了在兩個控制體上的動量方程的計算格式，使得速度的改變受其周圍八個壓力的影響，在一定程度上推遲了網格相交的進程。
  8. In these regions, an expensive high - order accurate eno scheme is applied to evaluate the numerical flux at cell boundaries. and hi smooth regions a cheap spline interpolation is used to get the value of the numerical divergence from values previously obtained on lower resolution scales to save the computational cost

    在這些奇性區域，我們利用代價昂貴的高階基本無振蕩格式計算單元邊界的數值通量；而在解光滑的區域，則用廉價的樣條插值根據先前低分辨尺度上得到的值來計算出其數值散度，從而減少計算工作量。
  9. 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。
  10. Taking m6 wing and f4 wing - body configuration as computational examples, some results by solving euler and n - s equations are presented. compared with the results of wind tunnel experiment, the results of n - s solver are much better than those of euler solver, and the upwind scheme is better than the central scheme in catching shock wave

    本文以m6機翼和f4翼身組合體為算例，對euler方程和n - s方程的計算結果進行了比較，從算例上可以看出， n - s方程的計算結果更接近實驗值；對中心差分格式和迎風格式的比較，可以看出，在激波的捕捉方面，迎風格式比中心差分格式更精確。
  11. An iterative receiver is introduced for convolutionally coded distributed mimo with v - blast architecture. a maximum - likelihood ( ml ) iterative detector and a low - complexity turbo detection scheme are proposed. the computational complexity is o ~ ( m _ tslogm ) and o ( m _ t ~ 2m _ r ~ 2s ~ 2m ) respectively

    在考慮大尺度衰落和小尺度衰落的通道條件下，針對通道碼為卷積碼的v - blast類分散式mimo / ofdm系統，設計了發射機結構及其迭代接收方案。
  12. By use of eno interpolating polynomials on unstructured grids, a high accurate finite volume scheme has been constructed through combining the idea of constructing of high order accurate finite volume schemes on structured grids. iii ) constructing of a new kind of high order accurate conservative remapping algorithm. it is based on the technique transferring physical quantities between the two computational meshes, known as remapping

    （ 2 ）基於非結構網格的lagrange坐標系下的有限體積格式構造：使用非結構網格下的eno插值多項式，結合結構網格高精度格式構造的思想，構造得到了非結構網格下的高精度有限體積格式。
  13. With introduction of pseudo compressibility, two - dimensional euler equations are derived. referring to compressible method, central finite volume scheme is employed to develop a computational code

    參照可壓縮流動計算的中心格式有限體積法完成了擬壓縮方法二維定常不可壓euler方程的推導和流動計算程序的編寫。
  14. Only clouds of points instead of grids are distributed over the computational domain and the spatial derivatives are estimated using a least - square curve fit on local clouds of points. the paper gives discrete form for euler equations on base of gridless method, and adopts five steps runge - kutta scheme for time - marching. the numerical results have been obtained for the 2 - d flows over airfoils or multi - element airfoils using the method presented

    本文首先對無粘euler方程進行無網格離散，並運用顯式runge - kutta格式推進求解，成功地數值模擬了二維單段和多段翼型的繞流；在此成功的基礎上通過在euler方程的右端加入粘性項，使求解方程變為層流navier ? stokes方程，得到了翼型繞流，數值結果顯示出粘性的影響。
  15. Using the approximation form of lumped mass matrix instead of the mass matrix in finite element discretization in space, backward differencing scheme in time, an implicit computational scheme is yielded, it proved the convergence estimate for this implicit scheme

    對有限元離散中引起較大誤差的質量矩陣，採用了近似形式的集總質量矩陣來代替，時間項採用向後差分，得到了一個隱式的計算格式，證明了計算格式的收斂性及其收斂速度估計。
  16. The model of fpsa ( inter - phase slip algorithm ) provided in phofvmcs, the software used in computational fluid dynamics, which solves the navier - stokes equations of each phase with the interphase interactions between two phase of water and air, including the interphase drag forces, interphase lift forces, interphase pressure and virtual mass forces, is employed with the difference scheme of upwind and the orthonormal grid

    計算採用由phoenics （計算流體力學軟體）的ipsa （相間滑移演算法）模型，應用upwind （迎風）格式和直角坐標網格。 ipsa模型對每一相求解n - s方程，並考慮水-氣體兩相間的相間互互作用，包括相間阻力、相間升力、相間壓力和虛質量力。
  17. The investigation in this dissertation shows the capabilities of ausm + scheme, such as the exact resolution of shock, low numerical dissipation, simple and requiring less computational effort. the successful applications on supercritical airfoils and wings show that the present flow solvers based on ausm + scheme are of valuable and promising in practical application

    通過本文的研究工作，展示了ausm +格式的激波高解析度、數值耗散小、編程簡潔、計算量較小等特性，同時，將其成功地應用於跨音速超臨界翼型、機翼的定常或非定常氣動特性的數值模擬和顫振研究中，具有一定的工程應用價值和良好的發展前景。
  18. In this paper, the technique of computational fluid dynamics ( cfd ) is adopted to simulate the air distribution in the generator hall, the water - turbine hall and switch station. analyzes and compares the distributions of the velocity field, the temperature field and the pmv - ppd in the workshop by different outlets layouts, outlets quantity and outlets size, bring forward applicable scheme for the engineering, provide the basis of the workshop ventilation design

    對不同的風口大小、風口數量、風口布置位置形成的廠房內速度場、溫度場、 pmv - ppd分佈進行了分析對比，提出適合於工程實際的送風方案，並對所選方案的不同運行工況進行了數值模擬研究，為設計及運行實踐提供了依據。
  19. Characteristics computational scheme of numerical wave model under complex topography conditions

    復雜地形下海浪數值模式的特徵線計算格式
  20. According to the principle of discontinuous finite - element method and selection of orthogonal basis shape functions, the computational scheme is developed for the shallow water equations

    摘要根據間斷有限元法的基本原理，選用正交化基函數，構造求解一維淺水方程的計算格式。
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