隨機相變動 的英文怎麼說
中文拼音 [suíjīxiāngbiàndòng]
隨機相變動
英文
random phase shift-
At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel
首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources
基於以上考慮，論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討：全面回顧了「可持續發展」概念的由來與演變，對國內外「可持續發展」的研究現狀進行了述評，並對「可持續發展」概念的科學內涵進行了深入探討；對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述，對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解；全面闡述了地下水資源變值系統理論的內容和意義，並與傳統的地下水資源計算評價方法進行了對比分析，結合實例具體說明了方法的應用；深入分析了地下水資源預測預報工作的極端重要性和復雜性，對傳統的地下水資源動態預測方法進行了全面的評述，指出了各類預測預報方法的特點及適用條件，對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍，以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹，並應用於地下水動態過程線的分析，採用時間序列中的b ? j法，蒙特卡羅方法，與地下水資源變值系統理論相結合，探討了地下水動態資料分析和地下水資源預測預報的新思路；綜合分析了現今各類地下水管理模型的特點及缺陷，將數學規劃、數理統計、隨機過程等與地下水變值系統理論相結合進行地表水地下水或多水源的聯合優化調度，使模型更準確、更實用；對保證地下水資源可持續開發的內部條件和外部條件進行了分析，內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀，科學的資源計算與評價方法，可靠的資源預測預報技術，可操作的資源管理措施，外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人口增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain
根據《隨機水文學》理論中的時間序列分析法，建立了適合三江平原井灌水稻需水量預報的非平穩時序隨機模型；通過分析降雨隨機特性，選定季節性時序隨機模型，建立了適合三江平原井灌水稻降雨預報的月平均降雨模型；根據最小二乘法，計算出幾種常用水分生產函數中的敏感指數及敏感系數，進而得到三江平原適宜採用的水分生產函數漠型及模型中敏感指數的變化規律；本文提出遺傳動態規劃法（ raga ? dp ） ，即採用改進的基於實數編碼的加速遺傳演算法（ realcodingbasedacceleratinggeneticalgorithm ，簡稱raga ）與動態規劃法（ dpsa ）相結合，推求非充分灌溉條件下三江平原井灌水稻的最優灌溉制度。In wireless communication, the relative movement between the transmitter and the receiver may cause the change of the electromagnetic wave propagation path, thus makes the channel become a random time - variety channel
在無線通信中，發射機和接收機之間的相對移動會造成電波傳播路徑的改變，從而使通道變成隨機時變通道。Nonlinear viewpoints on development of science is depended on that the science is the partial system of society system, and it not only has the nonlinear interaction which is the source and motive force of development, but also has strange attractor which lead to order in the disorder, that is science problem and science theory, matthew effect and priority. the development of science also possesses sensitive dependence to the primary condition. it will flux and reflux suffered from the influence of various random factors inside and outside of system
科學發展的非線性觀立足點就在於科學是社會系統的分系統，它不僅有非線性相互作用，這構成了發展的源泉和動力，更有導致無序中產生有序的奇異吸引子（科學問題與科學理論， 「馬太效應」與「優先權」 ） ，在發展過程中對初始條件也具有敏感依賴性，並受到系統內部、外部的各種隨機因素的影響而產生漲落，在常規發展時期表現為科學的漸變，也就是量的積累，當漲落放大時就表現為科學革命，即質的改變。So the chanmical properties and the effect of the timbering form, foundation modulus and stiffen coefficient of the pipelines under static loads were studied, which provided the research basic for the chanmical properties of the pipelines under dynamical loads. the mutual effect of the pipelines and the soil under the dynamical loads is belonging to a coupling system
管道與土體在動力下的相互作用是一個耦合系統問題，本文從荷載、土體、管-土整體三個方面深入探討了動力荷載下管-土耦合系統的基本特徵：隨機性、動態變化性、耦合性、非線性等。The pt secondary loop voltage drop is a changing amount and has the characteristics of indirection and certain randomness. the second, according to the cause of pt secondary loop voltage drop, the different methods to reduce the pt secondary loop voltage drop were analyzed and the conclusions are draw as below : 1. changing bigger section wire and maintaining the connector plugs regularly can reduce the pt secondary loop voltage drop effectively, but ca n ' t guarantee which meets the relevant rules
首先，通過對電壓互感器二次壓降的形成機理進行分析，得出以下關於二次壓降的相關結論： 1 、電壓互感器二次壓降等於二次迴路阻抗和迴路電流的乘積； 2 、電壓互感器二次迴路阻抗分為元器件自身阻抗和接觸阻抗兩部分，且接觸阻抗佔主要部分，從而使得電壓互感器二次迴路阻抗具有動態特性，而且具有一定的隨機性； 3 、電壓互感器二次迴路電流與二次負荷和迴路阻抗大小相關，因而二次迴路電流也是變化的； 4 、電壓互感器二次壓降是一個變化量，且具有單向性和一定的隨機性。Seismic response analysis of a long - span cable - stayed bridge under random seismic excitations with spatial variations, including travelling effect, incoherence effect and local site effect, was made with stochastic method
摘要以南京第二長江大橋南漢橋為例，採用隨機振動分析方法研究了地震動的空間變化特性，包括行波效應、部分相干效應以及局部場地效應對大跨度斜拉橋地震響應的影響。By making use of the time dependent covariance and cross covariance formula which used to calculate the non - stationary response under earthquake random excitation and deduced by xiyuan zhou and hu in 1965, the covariance and cross covariance formula of the four envelope models was deducted and the result of four models compared
本文通過應用周錫元、胡聿賢在1965年提出的計算地震動隨機激勵作用下非平穩響應的時變自相關方差和時變互相關方差公式，分別推導了四種包線函數模型的時變自相關方差和時變互相關方差表達式，並比較了四個模型的結果。The analysis of this paper has produces following results : first, although monetary transmission theories have great difference from each other, these differences lie in the adjustment scope of the assets that they investigate ; second, the methods by which money affects economy are various, so it has a strong influence, however, the change in the amount of money will not only cause the change of the total demand, it will also lead to a change in total supply by corresponding expectancy, thus in a long term we ca n ' t rely on the expansion of money to expand the production ; third, third, with the deepening of the reform, the above monetary transmission mechanisms will play a more and more important role in china ' s economy, and the influence of currency to the economy will be more and more strong, but since the correlating micro - mechanisms is mot integral, we should be highly cautious when this change takes its place
本文的分析得出了以下的結論:第一，盡管各種貨幣傳導理論有很大的不同，但是這些不同可以歸結為它們所考察的資產調整范圍的不同;第二，貨幣作用於經濟的途徑是多種多樣的，因此它的影響力是非常之大的，但是貨幣量的變動不僅會引起總需求的變動，而且會通過預期引起總供給的變動，因而在長期內不可能依靠貨幣的擴張來擴張產量;第三，隨著改革的深入，上述貨幣傳導機制在中國經濟中的作用日益加強，貨幣對經濟的影響力也越來越大，因此從長期看，貨幣政策由信貸控制轉向貨幣量控制是一個必然的選擇，但是由於相應的微觀機制尚未健全，這一轉變應高度謹慎。The acceleration response of the sprung mass for the quarter vehicle model the suspension system under periodical excitation and certain road uneven random excitations were discussed
為了反映實車狀況，著重討論了在調和激振和隨機路面激振下變剛度彈簧懸架簧載質量的動態相應特性。In the last chapter, we managed to put forward some useful idea to help develop the efficiency of china ' s stock market from the point of view of law, market and political system. in 50 ' s of 20 century, the famous professor eugene fama introduced the idea of efficient market hypothesis ( emh ), which means that the information available on the asset market can be found in the price of assets without delay and fault
在效率市場中，投資者都利用可獲得的信息力圖獲得更高的報酬，證券價格對新的市場信息的反應是迅速而準確的，證券價格能完全反映全部信息，市場競爭涉及的證券價格從個均衡水平過渡到另一個均衡水平，而與新信息相應的價格變動是相互獨立的，或稱隨機的。In actual work there are so many types of instrument and they are changed usually. the operator must have the ability to compete instructions. in order to advance, the performance of the system, there must be some new way to interact with the system
由於生產實際中的指令種類相當多且隨時可能因實際需求而變動，所以對操作員的要求較高，而且工作繁重，因此為了更加有效的發揮系統的功能，該文配合系統原有的指令原語、宏定義命令機制，提出了使用戶的操作更加容易和方便的命令生成器。At last grid - connected pv system has also been studied, different random faults in line and protection which bring the change of operating patterns have been taken account for, indices of reliability and economics have been computed in distribution system
最後，進行了光伏並網系統研究，考慮不同的線路及保護隨機故障動作，和多變的系統運行方式，結合配電網進行相關的可靠性經濟性指標計算。This thesis suggests a process considered minimizes the population size as similar individuals occur in the fitter members of the population, which helps reduce the execution times for ga by removing the redundancy associated with the saturation effect found in the later generation. this thesis uses a method that adds dynamic penalty terms to the fitness function according to the optimal degree of solutions, so as to create a gradient toward a feasible suboptimal or even optimal solutions. on the basis of the difference of the biggest and the smallest of fitness of individual, modifying the fitness function in order to convergence is a satisfaction
動態調節種群大小，去掉遺傳演算法在迭代後期搜索產生的過多相似個體，達到減少計算時間的目的；按照解的優劣程度給適應度函數增加一個在ga搜索過程中動態改變的可變罰函數，給搜索最優解創造一個梯度，使遺傳演算法收斂到可行的較優解或最優解；根據適應度值最大和最小個體的差修正適應度函數，使適應度函數值適中不容易造成收斂太快、局部收斂或根本不收斂而變成隨機搜索；為了避免「近親繁殖」採用競爭擇優的交叉操作；利用并行遺傳演算法的思想，提出一種自適應多子種群進化策略；提出人口汰新政策來解決類似甚至相同的個體的情況發生。Results showed that before and during the game, two groups had no significant difference in task engagement in the experimental game ; but performance - oriented subjects expended less amount of time on the unfinished experimental game than the mastery group after the game
將被試隨機分配至掌握目標組或成績目標組，考察兩組被試在任務前、中、后三個階段的任務投入水平，及相關動機變量的情況。Hearing depends on random movement of molecules : when they coincide with sounds from outside, they are strong enough to stimulate the inner ear
聽覺有賴于分子的隨機運動：當這些分子與外界的聲音相一致時，會產生變得足夠強大，能起到刺激內耳的作用。Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system. in order to attain the graph that pressure, position, velocity, acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method, dynamic simulation of the hydraulic system is studied in matlab 6. 5. it is convenient to analyse dynamic characteristics of the hydraulic syste m, beneficial to the design and parameter optimization of the hydraulic system. in the final part of the paper, under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders, control system based on the programmable logic controllers founded on technology of modern compute is designed
由於液壓打樁錘液壓系統是一個復雜的非線性系統，本文採用功率鍵合圖法建立液壓打樁錘上行、下降的鍵合圖模型和狀態空間方程，通過四階龍格?庫塔法和預估?校正法相結合編制了模擬程序對狀態空間方程求解，在matlab6 . 5中進行液壓系統的動態模擬，獲得液壓打樁錘運動過程中壓力、位移、速度、加速度等隨時間變化的曲線圖。此曲線圖方便了對液壓系統動態特性分析，為液壓系統的設計和參數優化提供了有益的借鑒。最後，在深入分析雙缸雙作用液壓打樁錘控制系統的功能要求后，採用了以現代計算機技術為基礎的新型工業控制裝置? plc可編程式控制制器，設計出了雙缸雙作用液壓打樁錘的電器控制系統。The introduction black - scholes models still assumed, namely the introduction of modern process ( wiener process, also called brownian motion ) to save the stock yield random fluctuations, weak markets and the effectiveness of the use of consistent share of the techniques ( ( markov property ) to describe the stock price change random process, the use of risk - neutral pricing theory through the analysis of the nature of asset price process martingale, established european style to the value of stock options with mathematical models
本文仍然引入black - scholes的模型假定，也即引入維納過程（ wienerprocess ， alsocalledbrownianmotion ）來刻畫股票收益率的隨機波動，採用與弱型市場有效性相一致的股價的馬爾可夫性（ markovproperty ）來描述股票價格變化的隨機過程，運用風險中性定價理論，通過分析資產價格過程鞅的性質，建立了歐式再裝股票期權價值的數學模型。Two illustrative examples, a duffing oscillator subject to a harmonic parametric control and a driven murali - lakshmanan - chua ( mlc ) circuit imposed with a weak harmonic control, are presented here to show that the random phase plays a decisive role for control function. the method for computing the top lyapunov exponent is based on khasminskii ' s formulation for linearized systems. then, the obtained results are further verified by the poincare map analysis on dynamical behavior of the system, such as stability, bifurcation and chaos
通過兩個實例，即一類參激激勵作用下的duffing系統和一類murali - lakshmanan - chua （ mlc ）電路，考察隨機相位在非反饋混沌控制中的影響與作用，利用最大lyapunov指數和poincare截面分析法證實了隨機相位確實可以用來調節系統的混沌行為，即一個小的隨機相位的擾動可能導致系統從有序轉變為無序，也可能使得系統從無序轉變為有序。分享友人