擇一最優 的英文怎麼說

中文拼音 [zháiyīzuìyōu]
擇一最優 英文
alternation optimum
  • 擇 : 擇動詞（挑選） select; pick; choose
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 擇一 : alternative擇一成本 [經] alternative cost
  • 最優 : optimal; optimum最優策略 optimal policy; optimal strategy; 最優設計 optimum design; 最優值 optima...
  1. The thesis, somehow, is a summary, which expounds the main contents of traditional portfolio theory ( tpt ) and mpt, also gives a comparison between tpt and mpt ; analyses two aspects of markowitz theory, one is the effects of risk disperses and the demonstration, the other is how to make an optimal portfolio strategy ; researches into capital assets pricing model ( capm ), factor model ( fm ) and arbitrage pricing theory ( apt ) respectively in three parts ; studies another two parts, one is the premise of mpt, which is the efficient market hypothesis ( emh ), the other analyses the behavior finance theory ( bft ) produced in the background of challenging and querying to emt and capm. the thesis finally discusses the researching and applying prospects of mpt in china

    論文對現代資產組合理論與傳統資產組合理論分別進行了分析，並對兩者進行了比較研究，對馬克維茨的均值? ?方差理論從資產組合風險分散效應和最優資產組合選擇兩方面進行了重點分析，對資本資產定價模型、因素模型、套利定價理論進行了一定深度的分析和研究，對現代資產組合理論的前提假設? ?有效市場理論及在對有效市場理論和資本資產定價模型形成挑戰和質疑背景下提出的行為金融理論進行了論述，論文最後分析了現代資產組合理論在我國的研究及其應用的廣闊前景。
  2. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  3. The chinese family culture expresses strong characteristic of familism, which firstly focuses on family trust, secondly on personal trust, but short of general trust. in reality all the contracts are all incomplete, but due to low general trust and

    因此，在一般信任較低的文化背景下，為了防範機會主義行為，華人企業的最優選擇只能是啟用強有力的家庭信任，並輔以私人信任，即形成以家族成員為主的管理核心。
  4. After discussing the market risks based on the individual investor behaviors, it describes the connotation, materialized model, and explores the risk ' s position in china security market. it finally draws the two risk - control solutions : 1 ) fosterage of rational individual investor ; 2 ) information disclosure

    本文提出了投資者風險決策中的理性判斷標準，認為理性概念是多層次多含義的，其精華是指一種最佳的、恰到好處的合理的狀態，一種最優化（ optimization ）的而非謀求數量最大化的方案就是理性選擇。
  5. It is generally impossible to obtain the analytic optimal guidance law for complex nonlinear guidance systems of homing missiles, and the open loop optimal guidance law is often obtained by numerical methods, which can not be used directly in practice. the neural networks are trained off - line using the optimal trajectory of the missile produced by the numerical open loop optimal guidance law, and then, the converged neural networks are used on - line as the feedback optimal guidance law in real - time. the research shows that different selections of the neural networks inputs, such as the system state variables or the rate of los ( line of sight ), may have great effect on the performances of the guidance systems for homing missiles. the robustness for several guidance laws is investigated by simulations, and the modular neural networks architectures are used to increase the approximating and generalizing abilities in the large state space. some useful conclusions are obtained by simulation results

    對于復雜的非線性導彈制導系統，很難求得其解析的最優制導律，只能求得開環的數字解，不能適用於具有時變不確定性的導彈制導系統.利用神經網路的學習和推廣能力，對開環的數字最優制導律進行離線的學習，作為閉環的神經最優制導律在線應用.研究分別選擇系統狀態變量和視線角速率等不同的神經網路輸入對制導系統性能的影響，以及各種制導律的魯棒性問題，並採用模塊化神經網路結構提高神經網路的學習和推廣能力，模擬結果得到一些有益的結論
  6. The emergence of the " cooperative security " and its practice in the asia - pacific area create a fine regional environment for china to test " new security theory " and its " initiative - cooperation " security strategy. at the same time, china ' s " new security theory " and its " initiative - cooperation " security strategy will embody the principles of " cooperative security " : " cooperative security " is the core of the " new security theory " ; as a security pattern, " cooperative security " is an attractive pattern for china to practise its " new security theory ". this pushes china to involve all kinds of " cooperative security " organizations actively so that china can realize its security strategic goals of the asia - pacific area as early as possible

    「合作安全」理念在亞太的興起及以此理念為指導的合作安全模式在亞太的蓬勃開展為中國實踐「新安全觀」和選擇「自主合作」式安全戰略營造了良khi碩士學住論文wmaster 』 sthesis好的地區環境背景；同時， 「合作安全」也將內化為中國「新安全觀」和「自主合作」式安全戰略的一部分： 「合作安全」是「新安全觀」的題中應有之義，是「新安全觀」的核心內容， 「合作安全」作為一種安全模式，也是實施「新安全觀」的有效方式；在「新安全觀」的指導下，冷戰后的中國應該走「自主合作」式安全戰略之路，這就要求中國積極參與各種地區性合作安全組織並促進合作安全模式的發展，這樣有利於中國營造一個最優化的國際安全環境以保證本國在亞太的安全戰略目標順利實現。
  7. Another oil well orbit optimized model, unitary model, is established base on the old model and the choice of the best section plane is calculated

    本文在二維油井軌道優化設計的基礎上，建立了考慮剖面類型選擇和剖面設計最優化在內的綜合數學規劃模型：歸一化設計模型。
  8. The best scheme was chosen after analysis and comparing and the structure was designed. at same time, the kinematics analysis was conducted, coordinate transformation matrix using d - h method was set up, and the kinematics equation direct solution and inverse solution was deduced, the velocity jacobian matrix was constructed using vector product method, and the values of displacement and velocity of some special point including the wrist point were calculated. secondly, the working space of the robot was analyzed and the axes section of practical working space was drawn

    首先，作者針對機器人的設計要求提出了多個方案，對其進行分析比較，選擇其中最優的方案進行了結構設計；同時進行了運動學分析，用d - h方法建立了坐標變換矩陣，推算了運動方程的正、逆解；用矢量積法推導了速度雅可比矩陣，並計算了包括腕點在內的一些點的位移和速度；然後藉助坐標變換矩陣進行工作空間分析，作出了實際工作空間的軸剖面。
  9. On the one hand, the author discusses markowitz ' s mean - variance portfolio selection model, single - index portfolio selection model, and simplified model of optimal portfolio selection. at the same time, based on the rules of optimal portfolio selection and other risk - metric indices, the author also discusses mean - absolute deviation model, mean - semivariance model and mean - value at risk model. on the other hand, the author discusses the asset pricing model, including the capital asset pricing model ( capm ), the multi - factor asset pricing model, and the arbitrage pricing model ( apt )

    一方面，作者討論了馬科維茲的均值-方差資產組合選擇模型、單指數資產組合選擇模型、最優資產組合選擇的簡化模型，同時根據最優資產組合選擇原則和其他風險度量指標，討論了均值-絕對離差、均值-半方差和均值-風險價值資產組合選擇模型；另一方面，作者討論了資產定價模型，包括多因素資產定價模型和套利定價模型，特別是在四種因素變量的基礎上，探討多因素資產定價模型。
  10. The paper analyzes comparatively interior transaction cost of integrated model with analysis structure of r. h. coase and market transaction cost of market model according to bargain proceeding ; analyzing economy of scales for electricity industry on the terms of its definition coming up with an improved " survival of the fittest " method to find optimum economic scale and explaining " separation of power plant from electric network " with the view of vertical economy ; studying selection and realization for valid competition of electricity industry with theory of contestable market, while setting up a oligarch monopoly competition model for the electricity market based on tax control of government with the thought of dynamic game theory of

    應用科斯的交易成本分析框架對一體化管理模式下的內部交易成本進行分析，按照契約過程對市場化模式下的市場交易成本進行分析，並作了相應比較；按照規模經濟的定義對電力產業的規模經濟性進行了分析，提出改進的"適者生存法"來確定電力產業的最優經濟規模，並運用縱向經濟的觀點解釋"廠網分開" ；應用可競爭性理論研究了電力產業的有效競爭方式的選擇和實現，同時借鑒stackelberg模型的動態博弈思想，構建了基於政府稅收調控的電力市場寡頭壟斷競爭模型，通過對模型的分析說明了市場結構的演化和政府管制的必要性。
  11. 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。
  12. 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
  13. Then based on the analysis of the constructions of wh, go and ls sequences, the corresponding correlation properties are derived and methods of selecting subsets with good periodic mean - square cross - correlation property or aperiodic mean - square correlation property from the wh set and go sequence set whose go zone z = l are investigated. furthermore, the methods of truncating the go sequences to obtain the quasi - orthogonal ( qo ) set whose family size m is larger than the length l and the quasi - generalized - orthogonal ( qgo ) set whose size m is larger than li2z are discussed, together with the numerical results of the correlation properties

    基於這些結果，探討了如何從wh序列集和廣義正交區z = 1的go序列集中，分別按照周期互相關均方特性最優和非周期相關均方特性最優的準則選擇性能較好的序列子集；同時討論了將廣義正交序列截短來獲得準正交（ qo ）序列集和廣義準正交序列集（ gqo ）的方法，並給出了這一類序列相關特性的數值計算結果。
  14. I had hoped that the final specification would support relax ng, which i consider to be a superior xml schema definition language, but i assume that wxs was chosen because a large part of the specification involves mapping lom data elements to the wxs type system ; relax ng does not have a type system of its own, instead borrowing that of wxs

    我本來希望最後的規范支持relax ng ，我認為relax ng是一種優秀的xml模式定義語言，但我猜想之所以選擇wxs ，可能是因為規范的大部分涉及到把lom數據元素映射到wxs類型系統； relax ng沒有自己的類型系統，而是借用了wxs的類型系統。
  15. In the genetic process of reproduction, crossover and mutation of the chromosomes in this method, these operators pr, pc and pm are produced randomly within some space, the scale of population and all kinds of genetic probability are also adjusted randomly so that the diversity individuals of population is ensured. the ga of dynamic population scale passes more information of paternal chromosomes to the offspring, which is beneficial to search the global optimization or quasi - global optimization

    該方法在染色體進行繁殖、交叉、突變的遺傳過程中，在某一范圍內隨機選取p _ r ， p _ c ， p _ m ，動態調整種群規模，保證了種群個體的多樣性；選擇同父本分別進行三種遺傳過程使得父本染色體中有更多的信息傳遞給子代，這有利於搜索全域最優解或準最優解。
  16. In chapter 9 we summarize the whole paper, and explain the shortages of this paper and problems to further study. main conclusions of this paper are as follows : the first, state - owned funds have always been predominant in venture capital sources in china, and this caused the " government - operated model " which leads to excessive government ' s interferes and distorted venture capital contracts ; the second, limited partnership contract is better than incorporated company contract, because the former has obvious advantages in not only encouragement and controls, but also in investors " profits. however, this paper insists, incorporated company contracts will still be very popular in the near future because limited partnership still be illegal in most provinces of china ; the third, venture capitalists " share of profits in compensation clause of fundraising contracts is influenced by investors " attitude towards difficulties and obstacles of future investment

    本文研究的主要結論：第一，在我國風險資本來源中，政府風險資本一直居於主導地位，這造就了我國風險投資的「官辦官營」模式，使其契約機制從一開始就帶有「行政干預」的烙印；第二，有限合夥契約在約束機制、激勵機制、投資者收益三個方面都明顯優于公司制契約，因此是我國風險融資契約的發展方向，但由於有限合夥在我國受到法律限制，公司制契約在一定時期內仍是我國風險融資契約的主要形式；第三，融資契約報酬條款中的激勵系數受主體先驗概率影響，借鑒有限合夥契約，可對我國公司制融資契約進行改造與重構；第四，與債權契約、普通股契約相比，可轉換優先股契約可以有效緩解風險投資過程中的信息不對稱、降低代理成本，因此是我國風險投資契約的最優選擇。
  17. The author discusses the causes of international monetary crisis. then the author reviews the mundell ’ s theory of oca and its recent development, analyzing the counter - effect of international monetary cooperation. based on these theoretical works, the author summarizes the typical viewpoint about which is the better exchange - rate regime between the fixed exchange rates and the floating exchange - rate, analyzing the recent development of the choice of exchange rate regime, such as the theory of original sin and two poles approach

    第一章從國際貨幣合作和國際經濟政策協調等概念的界定入手，探討了國際貨幣體系悖論的制度背景和國際貨幣危機產生的原因，進而闡述了蒙代爾「最優貨幣區理論」及其最新發展，分析了國際貨幣合作中的逆效等問題，並在此基礎上，總結了傳統的固定匯率制度與浮動匯率制度孰優孰劣的觀點及當前國際匯率制度選擇理論的最新成果，例如原罪論、恐懼浮動論和兩極論等。
  18. The second chapter introduces the development process of the theory of optimum currency areas ( oca ), and the origin and development background of currency integration. from the successful practice of european currency integration, china can gain enlightenment of the characteristics and route about regional currency cooperation and integration

    第二章介紹最優貨幣區理論的發展過程，闡述貨幣一體化的制度淵源和發展背景，並從歐洲貨幣一體化的成功實踐中得到區域貨幣合作及一體化特徵和路徑選擇的啟示。
  19. The switchers can isolate the faulted branch, restrict the faulted scale and ensure the supply of non - interruptions such that the reliability of distribution power system is improved. at the same time, the switchers are

    配電網開關設備的配置包括開關設備類型、數量、位置的確定，而其優化配置與定位就是從開關設備的備選位置集合中選擇一最優方案，使停電收益最大，或開關設備的投入使停電損失的減少最大。
  20. One kind of optimal international security investment portfolio and consumption choice problem

    一類國際證券投資組合和消費選擇的最優控制問題
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