有效質量近似 的英文怎麼說

中文拼音 [yǒuxiàozhíliángjìnsì]
有效質量近似 英文
effective mass approximation
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 有效 : effective; valid; efficacious
  • 質量 : 1 [物理學] mass 2 （產品或工作的優劣程度） quality 3 economy （離子源的）; 質量標準 quality level...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. This paper adopts an adaptive learning algorithm based on hierarchy clustering to update user profile, which continuously abstract the cancroids of one class of optimum information from the feedback flow of system, which effectively shield the learning process from plenty of feedback noises produced by distorted threshold and sparseness of initial information, which also can imitate artificial feedback approximately to perfect the intelligence of adaptive learning mechanism

    摘要本文採用一種基於層次聚類的自適應學習策略，從系統反饋的信息流中，動態提取一類最優信息的質心更新用戶模型，有效屏蔽了閾值失真和初始信息稀疏造成的大量反饋噪聲，並且能夠近似模仿人工反饋，完善自適應學習機制的智能性。
  2. The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states

    自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。
  3. The binding energies and the ground state energies of hydrogen impurity in a lens - shaped quantum dot ( gaas / inl - xgaxas ) under vertical magnetic field using effective mass approximation and variation method have been discussed

    利用有效質量近似、變分法，研究了垂直磁場下透鏡型量子點（ gaas / in1 - xgaxas ）摻入類氫雜質后基態能和結合能。
  4. In order to reduce the equation complexity and adapt to complicaied noniinear ana1ysis of high arch dams with joints, finite element treatments are used with incompressibie water and massless foundation. the added mass of water and added stiffness of foundation are respectively used to substitute the influence of water and foundations. the efficiency in the computations is improved by means of static condensation

    為適應有橫縫高拱壩非線性分析的復雜性，採用不可壓縮水體和無質量地基假定進行有限元處理，以水體附加質量和地基附加剛度近似代替水體和地基的影響，通過靜凝聚提高計算效率。
  5. We discuss the qcse of the impurity in the finite square qwws considering impurity position, and raise a point of the qcse under the influence of the masses mismatch and the aspect ratio of the quantum well wires. without considersion of the mismatch of the effective masses between the well and barrier, we obtain the conclusion as follows : ( l ) the first band energy of the electron is decreased under the electric field

    在前人工作的基礎上，我們在有效質量近似下討論了外加電場下有限深方形gaas ga _ （ 0 . 63 ） al _ （ 0 . 37 ） as量子阱線的雜質態和雜質的stark能移，並把我們的結果與前人的結果進行了比較。
  6. Comparing with traditional successive approximation process algorithm, our method can improve quality of reconstruction result while speeding up convergence. further, proper threshold is adopted to enhance the robustness of the histogram constraint.,

    和傳統的連續近似迭代法相比，該方法在加快收斂速度同時能夠有效地改善重建質量，同時我們採用閾值對先驗直方圖的影響進行動態地控制，有效地增強了直方圖約束的抗干擾性。
  7. The shifts of absorption edge of nanocrystsls compared with that of bulk have been calculated by means of effect - mass approximation model. the calculation and experimental results looked almost same

    用有效質量近似模型（ ema ）計算了半導體納米晶體的吸收邊相對體材料的移動，並將理論結果和實驗結果進行了比較，兩者相符較好。
  8. Based on the thomas - fermi approximation, the finite number effect, along with dimensionality, has been discussed for a bose system and fermi system trapped in 3d, 2d, 1d anisotropic harmonic oscillator potential, without considering the inter - atom interaction. we indeed found the remarkable differences between the finite number case and the thermodynamical case, including dimensionality

    基於thomas - fermi近似，在不考慮原子間相互作用的前提下，我們分別對處於三維、二維、一維諧振子勢場中的bose體系和fermi體系的熱力學性質作了詳細的討論，並得到了有限粒子數效應下熱力學量和臨界溫度的修正。
  9. In the effective mass approximation, using the two - dimensional equivalent potential model and a simple two - parameter wave function, we calculate variationally the ground state binding energy and correlation energy of positively and negatively charged excitons in finite deep gaas - al0. 33ga0. 67as quantum wells. the results show fair agreement with the previous experimental results

    在有效質量近似下，我們採用二維等效勢模型，並且選取了數學形式簡單、物理意義明確的兩參數變分波函數，利用變分法數值計算了有限深gaas ? al _ （ 0 . 33 ） ga _ （ 0 . 67 ） as量子阱中帶電激子的基態束縛能及相關能，所得結果與實驗結果符合得很好。
  10. Attaching mesh generation sources to the moving boundary allows a reasonable mesh distribution after remeshing. quadtree data structure is used to accelerate the searching operation during interpolation. results of mesh deforming about a rotating airfoil show that the new spring analogy greatly improves the deforming ability and mesh quality without lowering the efficiency

    以偏轉翼型動網格為例驗證了網格變形技術，結果表明：改進后的彈簧近似方法在保持原有高效率的同時，大大提高了網格變形能力和變形后網格質量。
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