次優性指數 的英文怎麼說
中文拼音 [cìyōuxìngzhǐshǔ]
次優性指數
英文
index of suboptimality-
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本廠的產品涵蓋打擊琴類（木琴、鐘琴、兒童彩琴） 、鼓類（邦戈鼓、康加鼓、堂鼓、桑巴鼓、腰鼓、地鼓、印地安嗵嗵鼓、海鼓、鈴鼓、手鼓、波浪鼓） 、砂球、砂蛋、鈴圈、砂板、砂筒、響板、舞板、梆子、響筒、響棒、三角鐘、碰鐘、響鈴、木魚、魚蛙、卡巴薩、指鑔等數十個品種；本廠的產品設計立足於滿足客戶需求，不斷創新，追求工藝品質；產品生產嚴把質量關，採取柔性製造工藝，合理控制生產流程，可以滿足客戶不同檔次規格和不同批量規模的產品需求；本廠注重產品的銷售及售後跟蹤服務，深度挖掘客戶潛在需求，力爭樹立優質、完整的市場品牌形象。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。Compared with cubic splines, quintic splines have more advantages for surface machining. so the generation and processing of nc instructions have become one of the nucleal technologies of cam and cnc
由於與三次樣條函數相比，五次樣條函數具有更大的優越性，所以基於五次樣條的nc指令生成與處理技術已成為cam技術和cnc技術的主要發展趨勢之一。In view of the wteristics of hawi core oplitative bos in the social gnisa1 of tw1ic construction project, the fuzzy w ( ana1ytic hierartw process ) methed is put fowt ty cbowt the fuzry qpttw selection theory wtth the ahp, the its atheretital for1, wtsat pfincip1e nd pmdri are ed
針對水利建設項目社會評價中定性指標多的特點，將模糊優選理論與層次分析法相結合，提出了模糊層次綜合評價方法，分析了其數學模型和評價的原則、程序和步驟。The ants " quantity is 2203, and whose dominance index is 0. 2832. the quantit y of the rove beetles of the coleoptera is 1619, and whose dominance index is 0. 2081. the pyralids moths and outlet moths of the lepidoptera, the leafhoppers of the homoptera, the darking beetles of coleptera and blow flies of the diptera take the dominant place in moderate insect community
中性昆蟲群落中，以膜翅目蟻科種類及數量最多，其群落數量為2203頭，優勢度指數為0 . 2832 ；其次是鞘翅目隱翅甲昆蟲，數量為1619頭，優勢度指數為0 . 2081 ；再次是鱗翅目的螟蛾、夜蛾，同翅目的葉蟬，鞘翅目的擬步甲，雙翅目的麗蠅等昆蟲。The primary advantage that elliptic curve systems have over systems based on the multiplicative group of a finite field ( and also over systems based on the intractability of integer factorization ) is the absence of a subexponential - time algorithm ( such as those of index calculus type ) that could find discrete logs in these groups
與基於有限域的乘法群系統（及基於整數分解的難解性之上的系統）相比，橢圓曲線系統的優勢在於，迄今為止還沒找到這類群上離散對數的次指數時間演算法（如微積分類）The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。It is necessary to optimize and perfect mathematics structures in mid - school mathematics teaching. viewing from general process, mathematics study is a process in which new learning contents and original mathematics structures act on each other and a new structure is then formed. viewing from meaningful study theory, any knowledge that students have learned is not fragmentary or isolated but constitute knowledge structures and build mutual relations between knowledges ; viewing from information - processing theory, we can improve our memorizing ability of working, if we can organize necessary information into " group lump " reasonably and effectively in the form of " structure " and concentrate more information into a new " group lump ". perfecting cognitiopn structures is an effective way in which our thinking can be suited to huge and long - term memorizing ; viewing from the theory of establshment, mathematics study means that subjects are forming a net - frame between new knowledge and all other factors so as to obtain new knowledge
中學數學課堂教學中優化和完善學生的數學認知結構的必要性，從數學學習的一般過程看，數學學習就是新的學習內容與學生原有的數學認知結構相互作用，形成新的數學認知結構的過程；從有意義學習理論看，學生所學的任何知識，都不是零碎的、彼此孤立的，而應按知識之間的關系，通過不同層次來構成知識的結構，建立知識之間的相互聯系；從信息加工理論看，如果人們採用「結構」的形式合理有效地組織必要的信息，成為「組塊」 ，可以讓更多的信息濃縮進不多的組塊，從而擴大工作記憶能力，而完善認知結構是使人的思維適應龐大的長期記憶的一種有效方法；從建構主義理論看，數學學習是指主體在把新知識與多方面的各種因素建立聯系的過程中，建構新知識與各方面因素間的網路構架，從而獲得新知識的意義。In the second methodology, parameterized matrices are taken as the weighting matrices of the quadratic performance index. due to the existence of the relationship between parameterized matrices and control forces, the parameterized coefficients of the weighting matrices can be regarded as the control parameters, and they are taken as one part of the synthesis design variables. since the experimental conditions can not meet the requirement of acoustic measuring, a method based on experiment and simulation analysis is developed
在第二種方法中，以參數化矩陣作為二次型性能指標中的權矩陣，由於參數化權矩陣與機構控制力之間存在的對應關系，可以將權矩陣的參數化系數作為控制系統參數，與結構設計參數一起同時作為獨立的設計變量，對目標函數進行優化分析。The indexes of diversity, evenness, dominance, isolation, fragmentation and fractal dimension are used in this study. the landscape structure evaluation was from three levels, which are sub - compartments, compartments and work region. used stores per square kilometer of forest and tm4 remote sensing image the author give the scaling analysis
根據中山陵森林資源調查數據，在分析其植被景觀現狀的基礎之上，應用景觀生態學原理，結合具體情況和考慮研究的可操作性，選取多樣性指數、優勢度指數、均勻度指數、分離度指數、破碎度指數、分維數指數6個指標，從地類景觀要素、林分類型和小班三個層次，對中山陵景觀進行結構評價初步分析。Secondly, a wind resource database and a wind power feasibility study projects database are designed. the algorithms of wind resource characteristic indices calculation and the methods of wind power project assessment are presented. and related application programme has also been deve1oped. at last, active web pages are designed and developed by using the asp technoiogy, which enable the information transmitted from the wind power database to the internet
首先，通過比較分析客戶服務器模式與瀏覽器服務器模式的優缺點，提出了兩種模式混合運行、優勢互補的解決方案，使得系統既具有跨平臺、跨區域特性，又不浪費已有資源；其次，進行了風資源和風力發電可研項目數據庫的設計，提出了風資源特性指標的計算方法和風電項目可行性的評價方法，並開發出相應的客戶端應用軟體；最後，運用asp技術進行了動態交互web頁面的設計開發，實現數據庫信息的internet發布。For a nonlinear system with time - delay, the optimal control problem based on quadratic performance indexes is usually transformed to a nonlinear two - point boundary value problem with not only time - delay terms but also time - advance terms. therefore, this kind of optimal control problem is especially difficult to be solved, no matter exact solutions or numeral solutions
對于帶時滯的非線性控制系統，其基於二次型性能指標的最優控制問題往往轉化為一個既有時間滯后項又有時間超前項的非線性兩點邊值問題，因此解決這一類控制問題尤其困難，不論是求其精確解還是數值解。And according to the basic principles of scientificaalness, systemeticness, effectiveness and this paper set up the evaluating indicator system of the region industry competitive power ( the fundamental frame of the system contains threefold contents : the actual competitive power, the potential competitive power and the environmental competitive power ), then this paper proceeds the empirical research on the existing industries in shandong province with the evaluation model of ahp ( analytical hierarchy process ), and calculates the competitive power exponent of each industry in shandong province. hereby this paper gives a general evaluation on the industry competitive power in shandong province, and crystallizes the superior industry and inferior industry in shandong province, then probes into the advantages and the disadvantages of the superior industry in shandong province for the background of globalization. finally the author puts forward the countermeasure and proposal on promoting the industry competitive power in shandong province
本文以山東省工業行業競爭力為研究對象，在對現有研究成果進行簡要回顧的基礎上，對產業競爭力的內涵進行了界定，依據科學性、系統性、可行性和可持續性的基本原則，建立了區域產業競爭力評價指標體系（其基本框架包括三方面內容：現實競爭力、潛在競爭力和環境競爭力） ，運用ahp （層次分析法）評價模型對山東省現有工業行業進行了實證研究，計算了山東省各工業行業競爭力指數，據此對山東省工業行業競爭力進行了總體評價，明確了山東省的優勢產業和劣勢產業，提出了山東省工業發展定位，進而探討了山東省優勢產業在全球化背景下的優勢、劣勢，最後提出提升山東省產業競爭力的對策和建議。The electro - hydraulic proportional control law is given. the laws of tracking control of displacement and speed of aircraft as well as tracking control of angle and angular speed of belt wheel are designed by means of state feedback linearization and quadratic performance index linear optimal control method. the robustness of the designed systems is analyzed, and arresting processes are simulated
給出了電液比例控制規律；利用狀態反饋線性化及二次型性能指標線性最優控制方法分別設計了系統跟蹤控制飛機位移與速度以及跟蹤控制帶輪轉角與角速度的非線性控制規律；對所設計的攔阻系統進行了魯棒性分析及攔阻過程模擬，模擬結果表明，通過選取適當比例系數或控制權系數，兩種控制系統的控制效果及魯棒特性均優于新型飛機攔阻系統。Abstract : a method named multi - times optimization is presented to solve the multi - specification optimization problem, which is difficult to solve using the variational optimal theory. in the method several demands are reduced to some sub - tasks. in every subtask a demand that can not be transformed into bound condition is taken as performance specification for optimazation, and the other demands are taken as bound conditions. by means of the method, the arrival time, number of turn, turn angle of the aircraft in the terminal area are selected as performance specification separately, and the general character of optimal flight route in the terminal area is given
文摘:為了給飛機提供一條能滿足多種指標要求的最優飛行軌跡，針對變分最優理論難以求解多指標優化問題，提出了命名為多次優化的方法，即將多要求的優化任務分成先後相繼的多次任務，每次任務中選取一種不能邊界轉化的要求作為最優性能指標，而其餘要求轉化為邊界條件.利用這一方法以時間、轉彎次數、轉彎角度為最優性能指標給出了終端區最優飛行軌跡的一般特徵( 3 ) the flexibility and importance of transportation structure optimization are analyzed. a structure optimization criterion system and a structure optimization mathematics model that can cover all the problems in the traffic and transportation system are established for the first time with layer analysis method. a quantitative analysis is realized on the basis of qualitative analysis
（ 3 ）對運輸結構優化可行性、重要性進行了分析，首次用層次分析法構建了涵蓋整個交通運輸領域問題的結構優化指標體系和結構優化數學模型，實現了定性基礎上的定量分析。The result showed that landscape diversity index and evenness index increase along the gradient, whilst dominant index decrease along the gradient zones. in general, landscape elements present concentrative d istributing patterns for great size, with landscape patch density and edged density smaller and landscape heterogeneity lower than others within closing to gradient of the city
優勢度指數呈相反的變化趨勢。在接近城市的梯度區內一般是景觀要素以大面積相對集中的分佈格局，景觀斑塊密度與邊緣密度較小，景觀異質性較低。越接近天然次生林區，景觀異質程度越大。In chapter 6, in order to use the preference information adequately in concept evaluation, the quality level of concept is introduced. consider the uncertainty in the stage of concept evaluate, the definition of concept risk is given in the view of satisfied requirement. and the multiform formulae of risk are analyzed
第六章引入了方案質量水平的概念作為方案優選的指標；針對設計方案評價階段的不確定性，首次從能否滿足需求的角度提出了方案不能滿足需求的風險性的概念，並給出了各種情況之下方案不能滿足需求的風險性的數學描述；進行方案排序時，分考慮評價者對風浙江大學博士學位論文險性的心理界限和不考慮心理界限兩種情況進行討論。Then, based on the analysis of the combined forecasting precision sequence, the paper simplifies the model mentioned above, and gets an optimal model for calculating the approximate solution of the combined forecasting method, which is only a combination of two forecasting methods, and obtains the calculating formula of the optimal approximate solution. shen min ( transportation program and management ) directed by song bing liang
將上述兩種單項預測法進行整合，首先建立了以預測方法有效性指標為目標函數的組合預測優化模型；其次在對組合預測精度序列分析的基礎上，得到了求兩組合預測方法權系數近似解的優化模型及最優近似解的計算公式； 4The paper proves that with ar ( 1 ) process for the end demand, if retailer adopts moving average or exponential smoothing to forecast the non - zero lead time demand, then bullwhip effect in demand forecasting and processing will occur ; if retailer adopts the optimal forecasting method, then bullwhip effect will occur conditionally
證明當存在訂貨提前期時，零售商採用移動平均法及一次指數平滑法預測會導致在需求預測，信息處理及傳遞過程中產生牛鞭效應；而採用最優預測僅在需求相關性很強時存在有限值的牛鞭效應。分享友人