variations equation 中文意思是什麼

variations equation 解釋
變分方程
  • variations : 變更
  • equation : n. 1. 平衡,均衡;平均,相等。2. 【數學】方程式,等式。3. 【天文學】(時)差;均分,等分。4. 【化學】反應式。
  1. According to the topology of the substation and resistance measurements of down - leaders, the erosion diagnosis equation is built and the resistance variations of grounding grid branches are solved, and the erosion of grounding grid could be found through the fuzzy diagnosis regulation

    利用接地網拓撲結構圖及接地網引下線間的電阻測量值,建立腐蝕診斷方程,通過求解診斷方程,計算出接地網支路電阻值變化量,採用模糊診斷方法判斷出接地網導體腐蝕的情況。
  2. Author, starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations, in frequency - wavenumber domain, and the improved wavefield extrapolation scheme, also give the method to improve the computation efficiency. the achievement establishes the theoretic basis of the whole research

    首先,從波場延拓的單程波方程出發,系統地研究了頻率波數域的波場延拓運算元之間的相互關系和轉換條件並在此基礎上提出了能適應劇烈橫向變速的頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元( vrselrf )和部分波場延拓改進方案及提高運算效率的措施,為整個研究打下理論基礎。
  3. 4, there are obvious differences of the seasonal variations of the hadley circulations and the strength and position of their joint uprising branch. the strengths of winter hadley circulations and their joint uprising branch is strong in the south hemisphere and weak in the north, with it is nearer to the equation in the south hemisphere than in the north of their centers

    4 , hadley環流圈及其共同上升支強度、位置的季節變化存在明顯半球際差異:冬季hadley環流及其共同上升支強度南半球( 7月)明顯強于北半球( 1月) ,其中心位置在南半球較北半球靠近赤道。
  4. A developed simple m - s model for image segmentation in geometric active contour model is presented based on intra - region similar and inter - region dissimilar properties. the model constructs an energy ( cost ) function, which is made of intra - region variations and weighting squares of subtraction of region mean values. using gradient - descent methods, the energy function is minimized and we get a curve evolution equation that segments image

    基於區域內一致性加權區域間差異性構造能量函數,利用最陡梯度法使能量函數最小化,提出了一種改進的簡化mumford - shah ( m - s )圖像分割模型,該模型利用區域內方差描述區域內一致性,區域間平均灰度值之差的平方描述區域間差異性,實驗結果表明,通過調節加權系數,該模型對弱邊界圖像分割具有較強的適應性。
  5. In chapter3, information is divided into two basic types, the marginal equation of bond price and short - term interest variations is established, thus the security price variations and the price equilibrium of other assets ( risk security non - risk security are included ) are analyzed by the implement of portfolio theory. finally the bond value equation which takes equilibrium return as its yield parameter is established through the theory of comparative return. in chapter 4, the intra - information and the transferable system of price is emphasized and the market - maker model and expected model under non - perfect information market conditions are established, and the disaccord of the influence of extra - information and intra - information on the security price is discussed

    第三章將債券的價格均衡劃分為兩大基本類型,建立了債券與短期利率變動的邊際方程,運用組合原理分析債券價格變動與其它資產(包括風險證券和無風險證券)的價格均衡關系,通過比較收益原理建立了債券以市場均衡收益為折現參數的價值方程,並通過實證檢驗了該模型的合理性;第四章,分析了內部信息與價格的傳導原理,建立了非完全信息市場條件下價格傳遞信息的做市商模型和預期模型,並討論外部信息與內部信息對股票價格影響的非一致性。
  6. It was proposed that the reduction in pr ( n ) during the electric fatigue process was probably caused by the increase of a domain and anti - ferroelectric c * domain ( both leading to the increase in non - switching of c domain ) in combining with the experimental observation that the pr ( n ) values lowered with the rise of n. the equation which can be used to calculate the differences in non - switchable domain due to the increase of n was also given. variations of domain - switching with changes of n are discussed according to the in - situ xrd measurements

    根據原位xrd實驗觀測結果,給出了c a疇的90疇變的近似估算公式,並結合宏觀剩餘極化強度隨n增加而降低的實驗觀測,提出了疲勞過程中材料的剩餘極化強度p _ r ( n )降低是由於a疇的增加和反鐵電c ~ *疇增加導致不可翻轉c疇增加共同造成的假設,並給出了不可翻轉疇隨n增加而變化的估算公式。
  7. Review of linear algebra, applications to networks, structures, and estimation, lagrange multipliers, differential equations of equilibrium, laplace ' s equation and potential flow, boundary - value problems, minimum principles and calculus of variations, fourier series, discrete fourier transform, convolution, applications

    線性代數回顧,網路,結構以及估計的應用,拉格朗日乘數,平衡態的微分方程,拉普拉斯方程和勢流,邊值問題,最小值原理和變分法,傅立葉級數,離散傅立葉變換,卷積,應用。
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