最優階 的英文怎麼說
中文拼音 [zuìyōujiē]
最優階
英文
optimal order-
Its biquadratic finite element approximation is considered and under the appropriately graded meshes, quasi - optimal order error estimates in the - weighted h ^ 1 - norm, up to a logarithmic factor in the singular perturbation parameter, are proved
然後，考慮此方程在分層網格剖分上的雙二次有限元逼近，在-加權h ^ 1 -模意義下得到了至多相差一個關于攝動參數對數因子的擬最優階收斂的誤差估計。Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value
同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。In preflight planning phase, the optimal global trajectory and its safe corridor can be found via synthesizing many kinds of information by large - scale computers on earth
在離線航跡規劃階段，最優全局航跡規劃和安全走廊可以通過綜合地面計算機的大范圍多種信息的方法來獲得。Thirdly, it outlines research on mechanism of adjusting iwt supply and its countermeasures to chinese iwt fleet. the study on applying production function to quantitate transportation capacity is advanced. by using the theory and method of optimum control to dynamic system, a model of adjusting transportation capacity by regulative fund is established for the first time
第三部分研究了內河運輸供給調控的機制和現階段中國內河運力供給調控的思路與對策；提出並研究了用生產函數模型定量描述運輸能力的方法；運用動態系統最優控制的理論與方法，首次提出並研究了基於調控基金投放的運力供給調控模型。As the popularization and application of integrate logistics support engineering thinking at our country industry field and the military continuously, the evaluation of equipment integrate logistics support capability become the mostly means to check up the stand and fall of equipment character of supportable design, the efficiency of the equipment using supportability and the decision - making to equipment ' s continuous model development, at the same time, along with the development and maturity of computer simulation technique, the research of analysing and evaluating equipment ' s effectiveness steps into a new stage, we can get the handle and maintain data on the base of originally lasting accumulating in existence by utilizing the computer emulating technique, which is necessary to analyzing and evaluating the ground - to - ground missile ' s integrate logistics support effectiveness, via simulating the handling and maintaining process of ground - to - ground missile weapon, we can evaluate the ils effectiveness comp rehensively, impersonally, veraciously, consequently, provide decision - making gist to make the best support project
隨著綜合保障工程思想在我國工業界和軍方不斷普及和推廣應用，裝備綜合保障能力的評估成為檢驗裝備保障性設計好壞、裝備使用保障效能高低以及裝備后續型號發展決策的主要手段，同時隨著計算機模擬技術的不斷完善和成熟，裝備效能分析與評估研究進入了一個新階段，我們可以在導彈武器綜合保障效能分析與評估所需使用與維修數據原始積累的基礎上，利用計算機模擬導彈武器在真實使用環境中的使用維修過程，達到對導彈武器系統的綜合保障能力進行更全面、客觀、準確的評價目的，從而為裝備保障部門制定最優的保障方案提供更好的決策依據。The relationships of modal damping versus the stiffness of cables, the attachment height of damper and damping constant are obtained. with the optimal structural control method, a new approach to determine the optimal damping constant of viscous damper is presented. the first a few modal damping can be optimized simultaneously under the optimal damping constant of damper, which is more convenient than the existed design method
4 、對拉索-粘性阻尼器系統的動力特性進行了研究，得到了拉索剛度、阻尼器安裝高度及阻尼系數等參數對拉索系統模態阻尼比的影響規律；根據最優控制原理，提出了一種確定阻尼器優化阻尼系數的方法，該方法確定的阻尼系數能保摘要證前幾階模態阻尼比得到整體優化，改進了現有的設計方法。In chapter two, we consider full disceret scheme of mixed finite element methods for the following initial - value problems of linear integro - differential equations of parabolic in this chapter, we give the error analysis of this full discrete scheme and get optimal error estimates for the discrete solutions of u and p
第二章討論下述線性拋物型積分微分方程初邊值問題混合有限元方法的后差全離散格式。給出了該全離散格式的誤差分析，得到了離散解逼近未知函數u以及伴隨速度p的關于空間和時間的最優階誤差估計。The conclusions are : under the case of monopoly, the enterprise has the ability to delay the investment, thus it can take the advantages of option value brought by uncertainty to select the optimal timing of investment in each phrase flexibly ; under the case of competition, enterprise will select the optimal investment timing by comparing the tradeoff between the benefits of option value and the strategic lost of competitor ' s preemption, because preemption of competitor will reduce the ability of enterprise to delay investment comparing with the case of monopoly, the enterprise usually invests early, hi the meantime, by comparing the outcomes of investment cooperation in the r & d phrase with that of competition, we can conclude that r & d investment cooperation is pareto dominant strategy, since enterprise can fully take advantage of the option value brought by uncertainty, and thus enhance the flexibility of decision - making
得到的結論是：在壟斷情形下，企業具有延遲投資的能力，因而企業可以充分利用不確定性帶來的期權價值，在創新投資的各階段根據不確定性信息的獲得靈活地選擇最優的投資時機；在競爭情形下，企業延遲投資的能力受到局限，由於害怕競爭對手的佔先，企業為了獲得佔先效應，會考慮競爭對手的行為對自己的影響，通過在不確定性所帶來的期權價值與競爭對手的行為所帶來的戰略價值之間進行權衡，來選武漢理工大學博士學位論文擇最優的投資時機。與壟斷情形相比，一般企業會提早投資。同時通過分析說明，競爭企業間通過在創新投資的研究與開發階段進行合作，可以使兩家企業充分利用不確定性帶來的期權價值，增強決策的柔性，結論說明，合作創新投資是兩家企業的帕累托占優策略。It is very important to estimate the basic parameters in helicopter preliminary design. neural network ( nn ) has the advantages in estimating accuracy and generalization over traditional methods. however, there are some difficulties in using nn, e. g., how to select a proper network structure and the number of hidden layers. in this paper, structure and connection weight of a three - layer nn are optimized by genetic algorithm, and the optimized network is applied to helicopter sizing. the proposed method can not only give an optimal nn structure and connection weight, but also reduce the prediction error and has the capability of self - learning when the latest data are available. furthermore, this method can be easily applied to helicopter design systems
在直升機初步設計階段估算其基本參數是很重要的.神經網路的通用性和精度比傳統的估算方法有更多的優勢，但是在應用神經網路時存在如何選擇合適的網路結構和隱層節點數目等一些困難.應用遺傳演算法優化三層神經網路結構和連接權重，並將優化得到的網路應用於直升機參數選擇中.該方法不但可以給出一個最優的神經網路結構和連接權重，而且降低了估算誤差，具有及時應用最新數據學習的能力.此外，該方法易於在直升機設計系統中得到應用Even in the 1980 s, we were able to deploy our strengths gainfully, when the mainland was at its initial stage of reform
到了八十年代，香港也還是藉助內地的改革開放尚處最初階段，發揮我們已具有的優勢。Kalman filter is an optimal filter algorithm in the minimum - mean - square - error sense, meanwhile extended kalman filter is a sub - optimal filter algorithm, which derived from the linearization of nonlinear system using taylor expansion. while the non - linearity of the system is not extreme strong, ekf can achieve approximately optimal filter effect
Kf是最小均方意義下的最優濾波演算法， ekf則是利用一階泰勒展開將非線性系統線性化而得到的一種次優濾波演算法，在非線性不是特別嚴重的情況下， ekf有著近似最優的濾波效果。Youth is not a time of life, it is a state of mind, it is not a matter of rosy cheeks, red lips and supple knees, it is a matter of the will, a quality of the imagination, a vigor of the emotions, it is the freshness of the deep spring of life
青春不是生命的一個階段，它是一種精神狀態；青春亦非粉面紅唇和冰肌柔骨，它是剛強的意志、最優的創造力和充滿活力的情感；它是使生命之泉淵遠流長的常青樹。Hierarichical optimal procuction control policy for production systems involving aging
考慮工業設備老化時的遞階最優生產控制策略H optimal model reduction for singular fast subsystems
最優模型降階4. the algorithm solving an optimal control problem governed by a semilinear parabolic equation with the control in the coefficients and source term is studied. the strong variational method which presented by mayne to solve the optimal control of lump parameter system is developed to semilinear parabolic optimal control problem
4 、把由mayne等所提出的用於求解集中參數系統最優控制的強變分法，推廣應用於一類控制變量含于高階導數項系數與源項中半線性拋物型系統最優控制之中。In order to ensure to process regularly the daily maintenance management, this paper is based on the theory and method of database design and the theory of pavement management system, combining the application environment and operation flow of the expressway maintenance system, bringing forward the four stages of the expressway maintenance system design which are the requirement analysis of consumers, conception framework design, logic framework design and physical framework design, scheming out an optimum database mode applied to all kinds of expressway maintenance systems, and establishing a common database application system, so that the expressway maintenance system can evaluate the pavement performance, forecast the pavement performance and make decisions of the pavement maintenance
為了保證高速公路日常養護管理正常有序的進行，本文根據數據庫的設計原理、方法及路面管理系統原理，結合高速公路養護管理系統的實際應用環境和操作業務流程，提出了高速公路養護管理系統數據庫設計的4個階段? ?用戶實際需求分析、概念結構設計、邏輯結構設計和物理結構設計，設計出適用於各種高速公路養護管理系統最優的數據庫模式，並建立了通用的數據庫應用系統，使得養護管理系統能夠進行路面性能評價、性能預測和養護維修決策Secondly, as for degree reduction of interval rational bezier curves, two methods are given : pseudo linear programming method ( plpm ) and pseudo optimal approximation method ( poam )
接下來對區間有理bezier曲線，給出兩種降階逼近演算法：擬線性規劃法（ plpm ）和擬最優逼近法（ poam ） 。Based on the representation of interval rational bezier curves and surfaces and by a serial of mathematical transformation, the degree reductions of them are converted to those of polynomials with upper bounds, then several algorithms are presented, with linear programming and optimal approximation methods. by relaxation of some constrained conditions, approximation effects of some of them are further improved
根據區間有理bezier曲線、曲面的特點，通過一系列數學變換，將其降階問題轉化為多項式的保上界降階逼近，再應用線性規劃和最優逼近方法求解，給出幾種逼近演算法，並探討通過約束不等式的鬆弛，進一步改進逼近效果。Under a prior graded meshes, the quasi - optimal order error estimates in the - weighted h ^ 1 - norm uniformly are proved
在先驗分層網格剖分基礎上，在-加權h ^ 1 -模意義下得到了擬最優階一致收斂的誤差估計。The characteristic finite element method is used to simulate compressible navier - stokes equations. numerical analysis shows that this method is stable and its errorestimates are optimal
摘要討論了二維或三維可壓縮n - s方程的特徵有限元方法數值模擬，嚴格的理論分析表明這種方法是穩定的，並且具有最優階誤差估計。分享友人