方差穩定性 的英文怎麼說

中文拼音 [fāngchāwěndìngxìng]
方差穩定性 英文
variance stability
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 方差 : dispersion
  • 穩定性 : antiwhip
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. Cathode and anticathode electric current distributing online detect equipment can trace aluminum electrolysis pot and document the electric current data change. by avail of this data, the relation of anticathode and cathode will be discovered. furthermore, some unknown rule may de discovered by online analysis and data mining. in this paper, author has completed a full study toward the production of aluminum electrolysis

    陰、陽極電流分佈在線檢測裝置跟蹤記錄了大量的鋁電解槽在平穩運行和發生針振時的陰、陽極電流分佈變化情況及方差變化情況的原始數據；從理論上講，在這兩者之間存在一定的對應關系，通過對陰、陽極電流分佈的實時、在線檢測，可以對電解槽的穩定性進行判斷，從而找到一種全新和更有效的管理模式。
  2. Ptfe has many excellent properties such as : bonzer self - lubrication ^ low fricatiom chemistry stabilization and thermal stabilization, but its wear resistance is very low to improve the wear resistance of ptfe a lot of researches have been down by means of adding fillers to it, there are still less report on nano - inorganic filler filled ptfe composites to change properties. in this paper, experimental study was made to question above problem

    Ptfe具有優異的自潤滑、低摩擦、化學穩定性和熱穩定性，但耐磨性較差，因而人們在利用不同種類的填料對ptfe進行填充改性，提高耐磨性方面作了大量研究工作，但在使用納米無機填料填充改性ptfe方面研究很少，因此本課題主要探討這一方面的問題。
  3. As the increase of domestic high - rise buildings, more and more deep foundation trench supporting constructions have come into existence. among the general geographical condition of the urban district in qingdao, most of regions, which mainly consist of strong de composed rocks, are in quite good condition. except for the sandy soil and oozy soil along sea sides. but the development of rock cracks and breaking zones and unstable lamprophyre still exist, so blasting is needed during constructions of foundation trench. blasting have bad influence on the stability of slopes. moreover. the slope - liding has happened for several times, so the engineering project of foundation trench attracts more attention of people

    隨著國內高層建築的發展，深基坑支護工程越來越多，綜合青島市區的地質狀況，除海邊有砂性土及淤泥軟土外，大部分地域巖土條件相對較好，多以強風化巖為主，但巖石裂隙發育，間或有斷裂帶和穩定性極差的煌斑巖穿插其中，基坑施工時需要爆破施工，對邊坡的穩定造成了不利影響，加之連續出現的幾次滑坡失穩事件，基坑支護工程越來越引起了各方面的重視。
  4. The three - order modulator has a 2 - 1 cascaded structure and 1 - bit quantizer at the end of each stage, the modulator is implemented with fully differential switched - capacitor circuits. and then, the discussion will begin by exploring the design of various circuit blocks in the modulator in more detail, i. e., ota, switched - capacitor integrator, quantizer, two - phase non - overlapping clock signal, etc., at the same time, these circuits will be simulated in spectre and hspice. at last, the whole cascaded modulator will do behavioral level simulation by matlab soft and simulink toolbox

    本論文中，首先介紹模數轉換器的各種參數的意義，以及一階sigma - delta調制器和高階sigma - delta調制器的原理;給出解決高階單環sigma - delta調制器不穩定性的方案，引入級聯結構調制器，特別針對級聯結構調制器中的失配和開關電容積分器的非理想特性進行詳細的討論;本設計的sigma - delta調制器採用2 - 1級聯結構和一位量化器，調制器採用全差分開關電容電路實現;同時對整個調制器的各個模塊進行了電路設計，包括跨導放大器、開關電容積分器、量化器、兩相非交疊時鐘等，並利用hspice和spectre模擬工具對這些電路進行模擬測試;最後，利用matlab軟體和simulink工具對整個級聯調制器進行行為級模擬。
  5. In this article, physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made, based on the lared - s code in planar geometry. it consisted of the processes such as the inverse bremsstrahlung absorption, electic heat conduction and fluid dynamics

    本論文在lared - s程序平面版本基礎上，推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程，編制了二維和三維柱和球幾何中激光驅動流體不穩定性的lared - s程序版本，主要物理過程包括：激光逆軔致吸收、電子熱傳導和流體運動。
  6. By the check - out, inspection and measurement to start construction the industrial art to this test pile with the examination between stake body mass and bearing power, made sure the stroke reasonable operation method drilling under the dissolved cavern geology term ; the pier foundation loading test expressed the lading and rub the lading that resistance drag a glazing for of relation, and to the borehole cast - in - place concrete pile in the karst terrain deliver with break the mechanism, the characteristic of bearing power, proceeding the spot test job of the full of result ; the test data expresses the stake side friction resistance to rises with a bat batch terminal friction resistance very important function, the of tip of pile resistance drag occupies the proportion very few

    通過對本次試樁施工工藝的檢測和樁身質量及承載力的檢驗，確定了沖擊鉆在溶洞地質條件下的合理使用方法；基樁承載實驗表明了荷載與摩擦阻力之間的關系，並對巖溶地區的嵌巖灌注樁的荷載傳遞和破壞機理、承載力特性，進行了富有成果的現場測試工作；試驗數據表明樁側摩阻和支盤端阻起很重要的作用，樁端阻力所佔比例甚少。這與設計樁基時的計算模式相差很大，承載力也較設計增加；使用力學數值分析方法和有限單元法，對鉆孔灌注樁樁端下的巖體強度和結構穩定性方面進行模擬計算和定量研究。
  7. Owing to the complicated technics and high cost of manufacture, limno2 can not satisfy the applications. the cycle stability is very poor, which is a result of the jahn - teller distortion effect causing by tervalent manganese ion. thus, exploiting the feasible technics of preparation and seeking the method to enhance the cycle stability of layered lithium manganese oxide are the targets of many research groups

    由於生產工藝復雜、成本高，也由於mn3 +強烈的jahn - teller效應，通常使層狀limno2循環穩定性變差而無法滿足實際應用的需要，因此研究適宜的制備工藝，尋求提高limno2循環穩定性的方法成為許多科研人員的奮斗目標。
  8. Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures

    此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。
  9. Using lyapunov stability theory, it has been shown that the control scheme guarantees that all the variables of closed - loop system are bounded. moreover, the mean - square tracking error can be made arbitrarily small by choosing some design parameters appropriately

    Lyapunov穩定性分析結果表明，本文所提出的控制器保證了閉環系統內的所有信號都是有界的，通過選擇適當的設計參數，可以使跟蹤誤差的均方根任意小。
  10. The results indicate that this comprehensive kalman filtering technique has the features of good stability of computation values, rather strong adaptability and well elimination of the effect caused by gross errors

    算例結果表明，這種綜合卡爾曼濾波方法具有數值穩定性好、有較強的自適應性和能比較好地削弱粗差影響等優點。
  11. Firstly, the connation of corporation culture is described here and the comparison of corporation cultures between the western country and chinese is carried out. it can be found that the chinese corporation culture is usually stable and containing, and however the western corporation culture is open and inclusive. therefore, in the new knowledge economy era, the chinese ideology and national culture should be integrated perfectly with the western technology of management on the basis of complete understanding the corporation culture difference between western and chinese enterprise

    首先，通過當前企業文化基本理論的敘述來對其基本內涵加以說明；並通過中西企業文化的對比研究發現中國的企業文化一般較具穩定性和包容性；而西方的企業文化則更具開放性和兼容性，更強調變異的重要性和理性的硬管理方式；在現代知識經濟時代，我國的企業則應在充分認識到中西企業文化差異的基礎上，將中國的思想文化基因與西方的管理科學技術切實地融合起來。
  12. The equations of the mean value functions and the covariance functions are established for dynamical systems whose inputs are fuzzy stochastic processes. an existence and uniqueness theorem of ito fuzzy stochastic differential equations is proved, some explicit representations of solutions and the equations of statistical characteristics are deduced for linear fuzzy stochastic differential equations, and numerical methods to nonlinear fuzzy stochastic differential equations are proposed, the conditions for stability and observability of fuzzy linear systems are derived. the kalman filter algorithms of linear fuzzy stochastic systems are brought forward

    主要成果包括：提出了模糊隨機變量協方差和反向協方差的概念；研究了二階模糊隨機變量的均方收斂性，並在此基礎上得到了均方模糊隨機分析、平穩模糊隨機過程及其譜分解的若干定理；根據均方模糊隨機分析理論，得到了輸入為模糊隨機過程的線性系統的輸出輸入統計特徵關系方程；證明了ito型模糊隨機微分方程解的存在唯一性，並給出了ito型線性模糊隨機微分方程解的表達式，統計特徵方程以及非線性模糊隨機微分方程的數值解法；得到了模糊線性系統的穩定性和可觀性條件、線性模糊隨機系統統計特徵方程和線性模糊隨機系統的kalman濾波演算法；研究了當觀測值是模糊數據時，線性回歸模型的建立。
  13. The relationship of the spca, pca and kpca are established. according to the covariance stationary processes, spca arithmetic also has certain stability and convergent similar to pca arithmetic

    由協方差平穩過程，得到譜主成分分析演算法也有類似於主成分分析演算法的穩定性和收斂性。
  14. First, we reviewed the finite - difference time - domain yee ' s method. the difference equations, the stability condition, numerical dispersion characteristics, absorbing boundary conditions, incident wave source conditions and the calculation of the frequency - dependent scattering parameters are discussed

    首先本文回顧了時域有限差分yee演算法，包括時域有限差分的差分方程、穩定性條件、數值色散特性、吸收邊界條件，激勵源的設置以及散射參數的計算等。
  15. In the course of modeling, we present multi - step generalized gradient method and multi - stage curve fitting technique, prove convergence of multi - step generalized gradient method by using differential equation stable theory, analyze the error of multi - stage curve fitting technique by using inner space, creat knowledge base of water network system by using the maximum subordinate principle of and near - select principle of pattern recognition. at last we make the optimal running scheme of water network system based on heuristic search technique of artificial intelligence and global feedback immediate coordination method of large scale system theory

    在建立系統模型的過程中，提出了多步廣義梯度法和多層曲線擬合的建模方法，並用微分方程穩定性理論證明了多步廣度梯度法收斂性，用內積空間的有關知識對多層曲線擬合進行誤差分析;應用模糊數學中的最大隸屬度原則和模糊識別中的擇近原則和人工智慧中狀態空間表示法建立注水系統的知識庫;用人工智慧中的啟發式搜索技術和大系統理論中的具有全局反饋的直接協調法制定注水系統的優化運行方案。
  16. Its defects are these : bad brake performance, bad heat - resistant nature, bad water damping quality and bad stabilization of direction. so it is necessary to develop new er. with variable structure parameters and intellectualized characteristic

    其缺點是制動性能和水衰性及汽車制動時方向穩定性等方面均較差，開發研製結構向參數可變的、智能化的電流變液制動器成為必要。
  17. The astringency, error and stability of the numerical method are researched. zero matrix method, constant matrix method, and jacobian matrix method are constructed in order to improve numerical precision and efficiency. the steps for calculating matrix exponential function using pade approach method are given out

    研究了所提西安理工大學博士學位論文數值計算方法的誤差、穩定性、收斂性等數學性質，在計算精度和計算效率兩方面提出了一些改進措施，構造了零矩陣法、常數矩陣法、雅可比矩陣法等計算格式，給出了利川pade逼近計算矩陣指數函數的求解步驟。
  18. The study on the stability switches of functional differential difference equations is an important research branch of the stability theories, which of both the theory and its applications has broad prospects. the first part of this paper, chapter 2 and 3, deals with the stability switches for two classes of retarded differential difference systems, respectively. by analyzing the characteristic roots of characteristic equations, some algebraic criteria of stability switches are established, which are useful and easy to verify

    穩定性開關是泛函微分方程穩定性理論中的一個重要分支，無論是理論本身還是它的應用都有廣泛的前景，本文的第一部分（第2章、第3章）分別討論兩類二階滯后型微分差分系統的穩定性開關，通過分析特徵方程的特徵根，我們給出了存在穩定性開關現象的實用而又易於驗證的代數判據，並利用計算機模擬驗算了一個具體例子。
  19. When discreting the sonic and elastic analytic equation, the paper shows different finite - difference forms of sonic and center finite - difference form of elastic by detailed deriving in different situation. at the same time, the paper discusses the finite - difference ' s stability and the boundary conditon of gridding region, then lists the final sonic and elastic finite - difference expression which can realize forward modeling and inverse in computer by programming

    在對聲波與彈性波解析表達式進行離散時，論文按不同情況進行了詳細的推導，由此得到聲波方程各種不同的差分格式和彈性波的中心差分格式，在此基礎上還對差分方程穩定性條件與網格區域邊界處理進行了討論，最後得到完整的能在計算機上進行正反演編程運算的聲波與彈性波有限差分格式。
  20. First, the difference equation, numerical stability condition, boundary condition, power sources settings and some improved speedup techniques of the finite - difference time - domain yee computational method were introduced briefly in which with the multi - time step method and the frequency - dependent finite - difference time - domain ( ( fd ) 2td ) method emphasized

    首先，本文簡單介紹了建立電磁模型中所需採用的時域有限差分yee演算法的差分方程、穩定性條件、邊界條件、激勵波源設置等的基本原理和一些用於加速fdtd演算法的改進方法。其中，詳述了多時間步長（ mts ）方法和頻率相關時域有限差分（ （ fd ） ~ 2td ）方法。
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