極值點 的英文怎麼說

中文拼音 [jízhídiǎn]
極值點 英文
extremal point
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  1. Concavity - convexity of functions near extreme points

    實解析函數在極值點附近的凹凸性
  2. Second, since the radius vectors r to the extreme points of the ellipse satisfy(5. 3-12)they are parallel to the two allowed d vectors.

    其次，因為到橢圓極值點的徑向矢量r滿足式（53-12），故這兩個徑向矢量與兩個允許的D矢量平行。
  3. Based on the speech produce model, we find the reason of periodicity disappearance and the extremum number increase by analysing the character of speech signal when the glottal closes

    於是從語音產生模型入手，詳細的分析了聲門閉合時刻語音信號的性質，找到了濁音信號經過小波變換後周期性消失、極值點個數增多的原因。
  4. By whitening the covariance matrix of flat ambiguity, correlation between ambiguity components, the number of local extrema of cost function is reduced. the search program getting into precocity is avoided by suitable encoding and genetic operation

    通過白化處理模糊度，減少模糊度搜索中指標函數的局部極值點，採用適當的編碼和遺傳操作使得在種群個體較少的情況下避免搜索陷入早熟。
  5. Second, since the radius vectors r to the extreme points of the ellipse satisfy ( 5. 3 - 12 ) they are parallel to the two allowed d vectors

    其次，因為到橢圓極值點的徑向矢量r滿足式（ 5 3 - 12 ） ，故這兩個徑向矢量與兩個允許的d矢量平行。
  6. The definition of yielding point and the non - coincidence of yielding point with extreme point

    拐點的定義及拐點與極值點的不重合性
  7. At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +

    首先改進了虹膜預處理方法，實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法，準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景，去除了非均勻光照對虹膜識別的影響;使用二分樹復數小波方法增強了虹膜圖像的對比度;在識別演算法方面，本文設計了一種「基於小波模極值點位置的虹膜識別演算法」 。
  8. Blade design optimization problems are multimodal and discontinuous problems, the use of gradient - based numerical optimization algorithms perform inefficiently and drop into local minimum prematurely. hence, the exploratory algorithms such as gas are required for global exploration. 4

    4 .通過rsm方法擬合復雜的響應關系，平滑設計空間「噪聲」 ，能夠防止數值優化方法陷入局部極值點，獲得良好的魯棒性和適應性。
  9. The water withdrawal will be equal to the water consumption if it reaches the maxima

    當取用水達到極值點時，取用水量等於耗水量。
  10. The image is split into several blocks, and every block is processed individually. so we can get ride of solving large linear equations and calculating huge matrix, and the time and space complexity are lowered greatly

    該方法按照圖像極值點的分佈將圖像劃分成若干塊，分塊處理，避免了求解大型線性方程組以及大矩陣產生，較好地降低了時間復雜度和空間復雜度。
  11. The application of the quadratic form in the function of many variable extreme value

    二元函數的極值點與一元函數的關系
  12. Spectral derivative is a simple and effective method to acquire the wavelengths of extremum points

    光譜微分方法是一種簡單而有效的確定光譜曲線極值點波長位置的方法。
  13. While for colored phase fluctuation, the number of extremum in the steady state distribution is changed from one to three directly

    而色噪聲位相漲落情形下，定態分佈函數的極值點由一個直接變為三個。
  14. Then we divided gas deposits subsystems by separation groove. based on these research, we described each gas reservoir system dynamicly

    通過氣勢能極值點首先劃分天然氣成藏系統，然後再利用分隔槽劃分天然氣成藏子系統。
  15. We design an algorithm for searching the similar region by scanning the extreme value of minus image, which cost less in computation amount and can satisfy the requirement of application in precision

    我們給出了一種通過查找差值圖像的極值點來搜索相似區域的方法。該方法計算量較小，而且精度也能達到應用的要求。
  16. On the basis of the geochemistry digital model arithmetic of triangulated irregular network, i change the arithmetic of auto - tracing isoline. in process of auto - tracing isoline, the proplem of tracing - crossand and mini - heave was resolved. the isoline is smoothec by linear overlap algorithm. in addtion, the model can build other unit of map such as extramum point, polygon

    在不規則三角網數字模型的基礎上，改進並實現了等值線生成演算法，解決了等值線生成中的分叉問題，解決了等值線上的小凸起問題；對等值線採用線性迭代演算法進行了圓滑處理；提出延伸三角網演算法，用於實現了開等值線的閉合；生成用於地學分析的區域圖元，等值線圖元，極值點圖元等。
  17. Aimed at the ga ' s disadvantages : weak local optimization, easiness of falling into local extremum, this thesis presents an improved ga which introduces two operators " local search " and " adaptively avoid entropy decreasing "

    針對遺傳演算法局部搜索能力差及容易陷入局部極值點的缺陷，提出一種改進的遺傳演算法，引入了「局部搜索?均值方差閥值」和「自適應防止熵減」兩個運算元。
  18. Based on the usually used stability theory for the normal steel structure, the non - stability are divided into three sorts according to the performance after instability, as the balance fork instability, jump instability and extreme point instability

    根據一般鋼結構應用的穩定理論，常按屈曲后性能將失穩分為以下三類：平衡分岔失穩、躍越失穩和極值點失穩。
  19. Pbo - b _ 2o _ 3 - sio _ 2 glass reacts with bismuth ruthenate and lead ruthenate is produced as transition layer. the transition layer can make the interface gradually change and the properties of resistors are improved at the same time. based on the study above, the way to get series of pastes was developed

    鉛硼硅玻璃粉體平均粒徑對厚膜電阻的性能影響有一極值點，約為1 . 51 m ，在該點處膜層的方阻值最小，電阻溫度系數絕對值最小，重燒變化率最接近零值。
  20. The proposed beam model satisfied the rigid - body test requirement. by using general displacement control method ( gsp method ) to determine the incremental load parameter and using incremental tangent method to deal with material non - linearity, the proposed beam model were proved to be able to track the entire procedure of deformation, numerically effective during buckling or snap - through of structure

    一系列的典型算例分析表明，本文提出的彈塑性大位移梁單元，能夠準確的跟蹤結構變形的整個過程，包括極值點失穩和跳躍屈曲的情況，可以運用於框架結構的屈曲后性能研究和非線性極限承載力的分析計算。
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