extremum method 中文意思是什麼

extremum method 解釋
極值法
  • extremum : n. （pl. -tre-ma ） 【數學】極值。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. A simple decision method on binary function ' s conditional extremum

    不定性求多函數極值
  2. In this papery we discussed the the extremum of function of several variables, and generalized the result of paper [ 2 ], then we give the method of solving the extrme value of n - component function using first class partial derivative

    摘要討論了多元函數極值的問題，推廣了文獻[ 2 ]的結果，並給出了利用一階偏導數求多元函數極值的方法。
  3. ( 3 ) the idea suggested in this paper of converting flood into utilizable resource 、 attempering flood by engineering means and supervising human behaviors in the flooded area. to overcome the various barriers arising from ideology 、 systems 、 technology and economy which the establishment of risk management system of flood will be confronted with, this paper also suggests a statistical approach to estimate extremum and the concept of gray - uncertainty risk in figuring flood risk and analyses the severe harmfulness of accidents of extremum risk, furthermore, supplements and perfects present quantity - analyzing method of risk loss

    3 、本文提出洪水資源化的觀念，以工程手段對洪水進行調節，以法律、行政、經濟、教育等綜合性的手段對人類在洪泛區中的行為進行管理，是削弱洪水的危害性、減輕洪水風險的有效方式，提高的防洪安全保障需求，實行洪水風險管理是必由之路。洪水風險管理體制的建立必然面臨觀念方面、體制方面、技術方面與經濟方面的重重障礙，並提出洪災風險評價的極值統計學方法和灰色-隨機風險率的概念，建立了其表達形式與計算方法，它完善了現有的風險損失量化方法。
  4. A novel method for the radar full pulse data analysis, called the extremum sequence analysis method, is put forward

    摘要針對脈沖雷達提出了一種新的雷達信號全脈沖數據分析演算法極值序列分析法。
  5. Several complementary computing dimension chain formulas of extremum method and probability method are deduced

    推導了使用極值法、概率法計算尺寸鏈的補充公式。
  6. The reason why we integrate them is that k - means algorithm is a mountain climbing method, which is easy convergent to local extremum, and sensitive to the original condition, but its convergent speed is relatively fast, and that genetic algorithm is a random searching method, which can find the whole extremum in a rather big probability, and non - sensitive to the original condition, but its convergent speed relatively slow

    之所以將：二者結合在一起，是回為k一均值演算法是一種爬山法，容易收斂到岡部極小值，對初始條件較敏感，但收斂速度較快，而遺傳演算法是卞dl隨機搜索演算法，能夠以較大概率找到全局最憂解，且對們始條件個敏感，但收斂速度較慢。
  7. Several characteristic parameters are extracted from the angular velocity curve and the acceleration curve of crankshaft instantaneous rotation, and the quality of them is evaluated by use of the gray relation analysis method and the method for inspecting the consistency of the extremum cylinder number

    在瞬時轉速曲線和角加速度曲線上提取幾個特徵參數，再用灰色關聯度分析方法和極值缸號一致性檢查法對特徵參數的優良性進行評價。
  8. The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study

    為改善上述缺點，本文進行了以下的研究工作：在忽略耗能器附加質量的基礎上，推導出適用於耗能減震結構的攝動法，減少振型分解法在迭代計算過程中的工作量，加快計算速度；針對運動方程的強行解耦所產生的誤差，根據攝動法原理，對其進行一階攝動修正；為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差，引入狀態空間對系統進行復模態分析，並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法；對于耗能器的數量和位置優化進行了一些探討和研究。
  9. The matching rate of the suggested two methods were compared for the assembly size chaims with different number of the forming links, with different number of the forming link parts, and with different deviation distribution types on the assumption that the closing link tolerance of the selective assembly is a tenth of that calcalated by the extremum method

    以不同組成環數、不同組成環零件數、不同偏差分佈類型的裝配尺寸鏈為研究對象，取選擇裝配的封閉環公差為按極值法計算所得封閉環公差的十分之一，以匹配率為評價指標，比較了兩種方法的優劣。
  10. Meanwhile, objective to the requirement of both real - time and accuracy for moving shaped target detect and tracking, a novel method is proposed based on combination of images difference and feature invariant. the paper improved the tradition difference method, constituted a feature invariant which characterized the object contour without influence of object ’ s size change, shifting, and rotation, and developed a dynamic - extremum - matching scheme

    同時，針對識別跟蹤具有形狀信息的大飛行器目標所提出的快速準確要求，提出了一種基於改進的差分演算法與特徵不變量匹配的目標識別方法，彌補了傳統圖像差分方法的不足，構造了一個具有平移、大小和旋轉不變性的特徵不變量用於識別目標，並研究出一種動態極值匹配方案。
  11. On the basis of the 9 - month observational data from five representative aws in 2005, daily extremum distributions of main meteorological elements were obtained by the statistical method

    摘要選取山東有代表性的5個臺站2005年9個月的自動站資料進行統計，得出其主要氣象要素日極值在各時間點上的分佈情況。
  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. Using extremum statistical method to predict pit corrosion sizes of the pipeline in service and further to evaluate the residual strength of the pipeline has a great significance for controlling accidents of corrosive perforations, guiding pipeline rehabilitation and replacement as well as prolonging service life of pipeline

    長輸管道的腐蝕類型多為均勻腐蝕或點腐蝕，採用極值統計方法對在役管道的點蝕尺寸進行預測，進而評價管道的剩餘強度，對于控制管道的腐蝕穿孔事故、指導管道的修復更換、延長管道的使用壽命具有重要意義。
  14. This paper discusses the statistical rule of maximum corrosive pit depth and determination method of extremum estimation for local corrosion depth, and presents a practical example of calculation

    文章討論了管道最深點蝕孔深度的統計規律以及局部腐蝕深度最大極值估計值的確定方法，並給出了實際算例。
  15. The differential and integration method was used to deduce the formula for determining the extremum places of structure moment and a simple method for the calculation of moment extremum, which has some reference value in practical engineering structure design

    摘要利用微分積分關系推導出結構彎矩極值發生位置和彎矩極值計算的公式，對工程結構設計具有一定的參考價值。
  16. They abstract loads as points, and simplify the issue to find the point which makes running cost of electric power system minimum as optimal substation location. the single location optimal model is solved by the method of iteration which is often used to solve extremum problem. the multiple location optimal model is solved by the method which is called location, distribution by turns

    用得最多的模型是經典的單、多源連續選址模型，它將負荷抽象為幾何意義上的點，將求最佳所址簡化為求使網路運行費最小的點的坐標，單源連續選址採用數學優化方法中求極值的迭代求解，多源連續選址通常採用交替選址?分配法求解。
  17. Utilizing method of function extremum, it is proved that there lies minimum coefficient heat transmission in sealed vertical air layer, that is to say there exists the minimum theoretical equivalent conductivity factor. furtherly, the equation of the most excellent thickness of air interlayer is obtained

    運用函數求極值的方法，證明了封閉垂直夾層中的傳熱系數存在極小值，即封閉垂直夾層在理論上存在最小的當量導熱系數，並推導出了最佳空氣夾層厚度的理論公式。
  18. According to feature that goal function has more than one local extremum in displacement back analysis for underground engineering, a new means of displacement back analysis for underground engineering has been established through adopting fem and self - adaptation idea on the basis of the improvement of the determining method of control parameters, such as initial temperature and number of state choice and annealing strategy, moreover, the relevant analytic software is developed

    摘要本文針對地下工程圍巖位移反分析問題的目標函數存在多個局部極值的特點，在對模擬退火演算法進程中控制參數，即初始溫度、每一溫度下的狀態選取次數和退火策略的確定方法加以改進的基礎上，引進有限元分析手段和自適應的思想，建立了基於改進模擬退火演算法的位移反分析方法，並開發了相應的分析程序。
分享友人
分享到 Line

分享到臉書