computational efficiency 中文意思是什麼

computational efficiency 解釋
計算效率
  1. A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time

    本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎
  2. The physical models for those sound synthesis methods can exactly describe musical instruments ' s fundamental and harmonious and inharmonious frequencyies, as well as their nautral sounding process. they can be played like real musical instruments, representing players ' s strength, velocity and pattern, as well as emotion. so, the methods are playing very important roles within the sound synthesis domain currently, with mpeg4 published and improvement of computer ' s computational efficiency

    由於它可以精確地描述物體的發聲及其發聲過程，精確地再現樂器的基波、高次諧波、非諧波以及asdr過程，象真實樂器一樣可以表達演奏者的演奏力度、速度、風格和情感，隨著計算機處理速度的提高，尤其是mpeg4技術的公布，這種方法日趨活躍，成為目前樂器模擬、聲音合成的研究熱點。
  3. In the cylinder2 - 1 / 2d code, object - oriented methodology is employed to increase flexibility and extensibility, a charge conserving current weighting algorithm and a multi - time - scale algorithm is used to enhance computational efficiency

    程序演算法中採用了滿足電流電荷連續性方程的電流分配方法和多時標推動粒子方法等，有效地提高了程序的計算速度。
  4. This paper summarizes the current status and development of the method for flood regulating calculation of reservoir, reviews some current typical methods and takes case study as example based on computational efficiency

    摘要綜述了水庫調洪演算方法研究進展，對近期典型的計算方法進行了評述與計算效率的實例比較研究；分析了直接試演算法的收斂過程，提出了直接試演算法的改進迭代格式。
  5. A new approach for initial localization of the mobile robots, namely complete line segments ( cls ) based localization was proposed. the definitions of cls as well as its properties and decision rules were given. the experimental results show that this method has much higher computational efficiency and better localization accuracy

    作者先針對目前機器人定位研究中的難點? ?初始定位，結合激光測距雷達的數據特點，提出了基於完整線段（ completelinesegments ， cls ）的初始定位方法，包括cls的定義、性質和判定方法，並在機器人試驗平臺上進行了實驗。
  6. This method is proved to be an accurate solution of random vibration equation, in which all cross - correlation items, either between earthquake inputs or between participant modes are involved naturally. compared to conventional method, the computational efficiency of the developed method is much higher

    此法計算結果自動包含了振型間及各輸入分量間的相關項，理論上是隨機振動方程的精確解法，且與傳統方法相比可大大減少計算量，非常適合分析大型網殼這種自振頻率密集結構的隨機地震響應。
  7. Abstract : in this paper, we propose an improved lagrangian relaxation algorithm to solve job - shop scheduling problems. besides the addition of augmented objective, we expand the search scope of near - optimal solutions and improve the computational efficiency greatly by restricting the solution scope of sub - problems and modifying the search method of dual problem. at the same time, we develop a genetic algorithm combining with the lr ( lagrangian relaxation ) method. using the numerous useful solutions we get in the lagrangian relaxation as the original genes, we can improve the solution further. test results show that these methods achieve satisfied outcome for job - shop problems. they can also be applyed to other programming problems with constraints

    文摘:針對車間調度問題，提出了一種改進的拉氏鬆弛演算法.在增加輔助目標函數的基礎上，通過對子問題的限制和搜索策略的改變，使拉氏演算法的計算量減少，近優解的搜索能力有很大改善.本文還提出了一種基因優化演算法，充分利用拉氏演算法得到的多個近優解，進一步優化結果.模擬結果表明對車間調度問題得到了較好的結果.本方法也可用於其它有約束的規劃問題
  8. Fluent is based on finite volume method, which is different form the widely used traditional analytical solution and numerical method based on finite element method and finite difference method, and its advantage is the high computational efficiency and precision

    目前針對徑向軸承和止推軸承靜特性的研究，多採用簡化的解析方法或數值解法，數值解法主要是有限元法和有限差分法，計算效率較低。
  9. Besides in nature, it is ray tracing based on the method mirror image. so it need not receive test, have higher computational efficiency and assure higher precision

    另外，從本質上講，它是一種基於鏡像理論的點對點的射線跟蹤法，所以無須進行接收測試，因此有較高的計算效率，並且保證了較高的精度。
  10. In addition, the mom - po hybrid method is proposed to dissect radiation from radome - enclosed antennas and the correction impedance matrix upon which the solution to equivalent currents of radome ' s surface depend is built. a comparative analysis of those methods is finally presented to examine respectively their accuracy as well as computational efficiency

    最後，對矩量法物理光學法的混合演算法分析問題的過程進行討論，給出混合演算法分析帶罩天線輻射問題的具體解決方案，建立混合演算法求解天線罩表面等效電磁流的校正矩陣。
  11. To the question of the low computational efficiency, low computational speed, low stability and unsatisfactory calculation result of the traditional method to get the optimal thresholds, a new multi - dimension thresholding method based on dga ( dissipative genetic algorithm ) that has higher capability and speed of optimization is developed

    模擬結果表明採用耗散結構遺傳演算法進行優化可使圖像處理時間和計算量大大減少，而處理精度並沒有受到影響，且有效避免了遺傳演算法過早陷於局部最優的不足，增強了演算法的穩健性。
  12. The direct numerical simulation methods for turbulent spots in the channel, open - channel and boundary layer flows are built respectively. effective algorithms composed of time - advancing, over - relax iteration and multiple grid methods are planned to raise computational efficiency

    分別建立了適用於在槽道、明渠和平板邊界層流動中直接模擬湍斑的數值方法，並精心設計了時間推進、超鬆弛迭代和多重網格等高效演算法，以提高計算效率。
  13. At the same time, as more and more radio sources have been set up, electromagnetic pollution in urban area becomes more serious, which is harmful to people ' s healthy and communication system so it is necessary to simulate the electromagnetic propagation in urban area by computer being an approximate hf method in evaluating em scattering ， the complex ray method （ crm ） is valuable in actual applications ， mainly benefited from its simple physical model ， convenient mathematical formulation and computational efficiency, especially with the scenes of scattering from complex objects based on the condition mentioned above, a hybrid ray model of the urban area electromagnetic wave propagation prediction was established with the foundation of ray tracing theory and complex ray theory

    復射線技術作為一種求解波場問題的高頻近似方法，由於其具有物理模型簡單、數學處理方便、計算效率高等優點，在復雜的目標散射特性分析等應用領域中有著重要的應用價值。基於以上的情況，本文在射線追蹤理論和復射線理論的基礎上，為城區環境建立了混合射線預測模型。本文採用橢圓模型對已有的射線追蹤方法進行加速，並將復射線理論應用到城區環境電波傳播預測中，提出新的預測方法混合射線方法。
  14. And when going on reliability analysis of slope stability, confirm with critical split surface using traditional definite value analysis method ( namely most dangerous sliding surface ), then calculate reliability index and failure probability of slope in this sliding surface. compare with using trial method to look for critical sliding surface in the past, it reduces time of calculating greatly, improves computational efficiency, can get safety coefficient and failure probability of slope stability at the same time

    並且在進行邊坡穩定可靠性分析時，用傳統的定值分析方法確定公路邊坡的臨界滑裂面（即最危險滑裂面） ，然後以此為基準計算邊坡的穩定可靠指標及邊坡失效概率，與以往尋找臨界滑裂面的試演算法相比，大大減少了計算時間，提高了計算效率，可以同時求得邊坡穩定安全系數和邊坡失效概率。
  15. The main advantages of the proposed method are simple design procedure and computational efficiency

    該方法最大優點在於設計過程簡單易行並且計算效率非常高。
  16. A chirp - z transform ( czt ) algorithm on the which is similar to range - doppler algorithm is studied, and the effective swath width is analyzed. secondly, a modified block czt algorithm is presented, which improvs the computational efficiency of the high - resolution sar imaging with wide swath

    其次研究了一種與距離-多普勒演算法類似的線性調頻z變換（ czt ）演算法，分析了有效測繪帶寬度的問題；提出了一種改進的分塊處理czt演算法，提高了對大場景高解析度sar成像處理的計算效率。
  17. The explicit method is widely used for its simpleness and little memory consumed with local time step and variable coefficients implicit residual smooth to accelerate the convergence procedure. according to yoon and jameson ' s ideas, an efficient implicit lu - sgs algorithm is carefully constructed by combing the advantages of lu factorization and symmetric - gauss - seidel technique in such a way to make use the l and u operators scalar diagonal matrices, thus the numeric algorithm requires only scalar inversion. the computational efficiency is greatly improved with this scheme

    顯式方法具有簡單，消耗內存小等優點，並採用當地時間步長、變系數隱式殘值光順等加速收斂措施，在定常流動的模擬中得到了廣泛的應用;根據yoon和jameson提出的簡化正、負矩陣分裂，構造的l 、 u運算元只需進行標量對角陣求逆，極大提高了流場數值求解過程的計算效率;採用newton類型的偽時間子迭代技術使時間推進精度提高至二階。
  18. In order to improve the computational efficiency of stereo matching by reducing the correspondence searching to id ( along the horizontal scan lines of image pairs ), rectification is also a very important procedure

    此外，立體圖對的外極線配準也是一個必不可少的工作。本文提出了一種二步旋轉的外極線配準新方法。
  19. Through the research in this thesis, following conclusion can be drew : on the condition of nearly incompressible limit, the n - s equations can be recovered by the lb method ' s models with 2 - order numerical precision ; computational efficiency in simulating flow fields can be improved effectively by perfection of the lb method ' s theory ; development of parallel computation can contribute to the simulation of large - scale flow field with complex geometry

    通過本文的研究，可得出如下結論： lb方法的模型在接近不可壓縮的條件下能夠以二階精度逼近n - s方程； lb方法理論的完善能夠有效地提高流場模擬的計算效率；并行計算的發展有利於lb方法模擬大尺度的復雜流場。
  20. Its principal means is to regulate transformer rate and to parallel with capacitors. thie paper implements reactive power optimization calculation based on above mathematical model by genetic algorithm. to overcome the poorly computational efficiency of genetic algorothm, we also makes an improvement of it to enhances its convergence speed and search efficiency

    無功優化主要採用調整變壓器分接頭和並聯電容器兩種方法，用遺傳演算法實現了基於以上數學模型的配電網無功優化計算，針對遺傳演算法計算效率低的現象對常規遺傳演算法加以改進，進一步提高了演算法的計算效率和全局尋優能力。
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