演化算符 的英文怎麼說

中文拼音 [yǎnhuàsuànfú]
演化算符 英文
evolution operator
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 符 : Ⅰ名詞1 （符節） tally （with two halves made of wood bamboo jade metal issued by a ruler to gener...
  • 演化 : evolution
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. In this diploma thesis, the statistic and structural characteristic of musical score image is analyzed and synthesized by relevant technology of image project, pattern recognition, mathematical morphology, software engineering, music knowledge, midi and so on. the concept of direction number has been defined, and then the mathematical morphology theory is used to process musical score image and recognize musical information. specialized direction number algorithms are firstly used to preprocess a musical score image and then recognize stafflines, barlines, pitch, note values, clef, etc. finally the musical information of the musical score image is automatically stored in the midi format

    本文利用圖像處理、模式識別、數學形態學、音樂知識庫與midi等相關技術，分析與綜合數字樂譜圖像的統計與結構特徵，提出了方向數等概念，對樂譜圖像進行處理，利用直方圖技術與方向數演算法識別譜線、小節線、符乾等樂譜的主要框架，然後用數學形態學理論識別音高與時值，最後根據這些音樂信息，組合成音樂樂譜信息，並自動轉化成midi格式。
  3. Who calculating the condensing heat transfer, the algorithm uses the nusselt w. method and used a coefficient of correction. by this coefficient the contradiction between the actual condition and the assume condition of nusselt is solved

    為此，演算法在計算凝結換熱時採用nusseltw .方法並加入了修正系數，解決了復雜且變化的實際工況與nussen所假設的條件不完全相符的矛盾。
  4. All the connected units in the page are detected by search algorithm of connected region. the row - column mergence of the character is defined by fuzzy connectedness of the connected units at four orientations. the combination of punctuation we adopt the method of combination behind recognition due to great effect of mergence

    版面圖文分割主要採用自底向上的辦法，利用連通域搜索演算法檢測出文本頁面上的所有連通基元，通過對連通基元的四個方向上的連接度進行模糊化處理來決定文字行、列的合併，並對在文字行合併時影響較大的標點符號採用先識別后合併的方法。
  5. We examin e the generation of bell state in bose - einstein condensates of two interacting species trapped in a double - well configuration analytically and the density of probability for finding the entangled bell state is given. we find that the oscillation amplitude of the probability of density for finding the entangled bell state becomes greater as the ratio of the interspecies interaction strength and the tunneling rate increases, moreover the self - interaction strength of the component a ( b ) has no effect on it. also we use the time - dependent su ( 2 ) gauge transformation to diagonalize the hamilton operator, obtain the berry phase and analytically the time - evolution operator

    此外我們還研究了在雙阱玻色-愛因斯坦凝聚中糾纏態的演化，研究發現隨著組分間相互作用和隨穿率的比值的增加系統演化到bell態的概率變大，而且組分自身內在的相互作用對形成bell態的幾率沒有影響；並且用含時su （ 2 ）規范變換對角化哈密頓量得到了系統的berry位相和時間演化算符，並研究了量子隨穿過程。
  6. Response surface has been built based on bp neural network with relationship of maximum of spinning force variety, material parameters and power spinning process parameters established and optimum achieved by using particle swarm optimization algorithm hence optimization of tube power spinning process parameters

    摘要以bp神經網路為基礎構建響應曲面，建立材料參數、筒形件強力旋壓工藝參數等和旋壓力最大變化值之間的關系，並用粒子群優化演算法求解，獲得符合優化條件的最優解，從而實現筒形件強力旋壓工藝參數的優化。
  7. In computation of swept volume approximation, an improved technique to generate the swept volume approximation for arbitrary meshes is presented by introducing generator simplification and path resample using frenet moving frames along the discreted sweeping trajectory. other steps, such as a directed distance field computation on a uniform grid based on the hardware accelerated computation technique and iso - surface extraction using marching cubes algorithm, are also included in this algorithm. in addition, the simplification scheme and smoothing technique are applied to the swept volume generated from iso - surface extraction

    本文的主要貢獻在於：在掃描體逼近計算方面，在原有任意多邊形網格模型沿任意路徑運動生成掃描體逼近演算法的基礎上，提出了加入對掃描母體簡化的預處理和用活動標架對掃描路徑進行重采樣等過程，演算法的其它過程還包括：計算掃描體中幾何基元的排列，用硬體加速構造無符號的有向距離場，將無符號距離場轉化為有符號距離場，從有符號有向距離場提取等值面等。
  8. Begin for the problem that some parameters can not be simulated exactly before, according to the data observed on - site, the dynamic elastic modulus and the elastic modulus of the spar of the rooftop has been reckoned in reverse with the function of ansys optimum. design

    首先，針對以往計算中，部分模型參數模擬不準確的問題，根據現場實測數據，運用ansys優化功能對混凝土動彈模和屋頂桁架桿的軸向剛度進行了反演，用反演的參數結果建立模型進行模態分析與實測數據符合較好。
  9. In this scheme, the unitary of time evolution operators makes sure that the wavefunction is normalized in time - space propagation

    在這種方案中，時間演化算符的幺正性保證了波函數在傳播過程中的規范性。
  10. With time - evolution - operator, it is proved that the population of upper level is in circumstance of cyclic oscillation by laser pulses pair of gaussian line - shape in a homogeneous broadening two - level system. the oscillatory time oxide is the delay time between the laser pulse pairs and the oscillatory frequency equals the one of transition between the lower and upper level

    引入時間演化算符，證明均勻增寬二能級體系在飛秒激光脈沖對作用下上能級激發態布居是周期性變化的，它以飛秒脈沖對之間的延時為時間軸，以該原子能級之間的躍遷頻率為振蕩頻率
  11. These methods have been developed and get wide applications. in recent ten years, directly searching for travelling wave solutions of nonlinear evolution equations has become more and more attractive due to the availability of computer symbolic systems

    近十年來，隨著計算機符號計算系統的飛速發展，非線性演化方程孤波解的解法研究又成為了一個活躍的領域，涌現出了各種「直接方法」或「代數方法」 。
  12. Using lewis - riesenfeld theory, we obtain exact solutions of the time - dependent system, then we recover both n - pulse method based on time - evolution operator of the system and stirap method in terms of instantaneous eigenstates with the help of time - dependent gauge transformation

    利用含時規范變換理論得到系統的精確解，我們用時間演化算符同時得到文獻中分別採用-位相法和stirap （受激拉曼散射）方法得到的結果，因而更具有普遍性。
  13. The energy eigenvalue, eigenfunction, matrix elements of coordinate and momentum operators in energy representation, and evolution operator for a two - dimentional coupled oscillator are presented by using the general linear quantum transformation theory

    摘要運用廣義線性量子變換理論，給出一類二維耦合量子諧振子的能量本徵值、本徵函數、坐標和動量算符在能量表象中的矩陣元及演化算符。
  14. With the time - evolution operator obtained by means of su ( 2 ) spin coherent states we are able to derive analytic time - evolution of spin probability - current between the two quantum dots for various initial states

    我們利用su （ 2 ）自旋相干態獲得包括庫侖相互作用hubbard模型的時間演化算符，得到解析的含時自旋流。
  15. In this paper, the exact expressions of the evolution operator and wave function for a driven time - dependent quantum oscillator are obtained by means of the combination of the inhomogeneous bogoliubov transformation ( ibt ) and the evolution equation associated with a su ( 1, 1 ) h ( 4 ). our results agree well with those derived in [ 3 ], but the present method is more simple and definite

    非齊次波戈留波夫變換與su （ 1 ， 1 ） ? h （ 4 ）量子系統的演化方程相結合，給出了求該系統時間演化算符和波函數的精確表達式。作為一個典型例子，我們得到含時受迫諧振子的演化算符和波函數的精確表達式。
  16. Using the formulized approach to the su ( 1, 1 ) h ( 4 ) time - dependent system, which is derived from the combination of the formulation of the time - dependent bogoliubov transformation and the evolution equation of the system, we obtain the time evolution operator, state function and heisenberg uncertainty relation of the parametric oscillator with cavity losses under the weak coupling approximation. we also discuss the squeezing property of the system

    本文利用含時波戈留波夫變換與時間演化方程相結合得到的求解su （ 1 ， 1 ） ? h （ 4 ）量子系統的時間演化算符和演化態的普遍公式，我們導出了帶腔損耗的參數振子在弱耦合近似下的演化算符，態函數和不確定乘積，並討論了系統的壓縮特性。
  17. With the hamilto - nian of the interaction between the field and the atom with an intensity - dependent coupling, the evolution operator and the reduced density operators of the field and the atom are derived without taking the influence of the environment into account, then the basic work model without dissipation is established

    從光場與原子依賴強度耦合相互作用的哈密頓量，推出了無環境影響的依賴強度耦合j - c模型中系統的一般時間演化算符和光場與原子的約化密度算符，建立了研究不考慮環境影響的j - c模型的一般動力學的基礎。
  18. Finally, by means of time evolution operator and numerical calculations, the time evolution of the atomic population, the atomic dipole squeezing, the time evolution of the squeezing and coherence properties of the light in the system of the two identical two - level entangled atoms interacting with the coherent optical field have been studied

    論文的第三部分工作是採用時間演化算符和數值計算方法，研究了兩全同二能級糾纏原子與相干態光場相互作用過程中，原子布居、原子偶極壓縮、光場的二階相干和光場壓縮性質的時間演化特性。
  19. The innovation of the thesis as follows : advances the generalized computing theory that combines symbolic computing with neural computing, fuzzy computing and evolutionary computing

    本文的價值在於：提出了融符號計算、神經計算、模糊計算和演化計算於一體的廣義計算理論。
  20. The second part, with the aid of many types constructive transformation and symbolic computation ( especially wu algebraic elemination method ), some topics in nonlinear evolution equation are studied, including exact solution ( solitary solution, periodic solution, rational function solutions and jacobian function solution ), backlund transformation, cole - hopf transformation, dromion solution and its construction etc. charter 2 introduces ac = bd model and its application about partial differential equations

    第二部分以構造性的變換及符號計算特別是（吳代數消元法）為工具，來研究非線性演化方程中的一些問題：精確解（如孤子解、周期解、有理解和雅可比橢圓函數解（雙周期解）等） 、 backlund變換、 hopf變換， dromion解及衰變結構等第二章介紹了求解pdes的ac = bd模式及其在偏微分方程中的作用。
分享友人
分享到 Line

分享到臉書