隨機性效應 的英文怎麼說
中文拼音 [suíjīxìngxiàoyīng]
隨機性效應
英文
stochastic effect- 隨 : Ⅰ動詞1 (跟; 跟隨) follow 2 (順從) comply with; adapt to 3 (任憑; 由著) let (sb do as he li...
- 機 : machineengine
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 效 : Ⅰ名詞(效果; 功用) effect; efficiency; result Ⅱ動詞1 (仿效) imitate; follow the example of 2 ...
- 應 : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
- 隨機 : random stochasticrandom
- 效應 : [物理學] effect; action; influence
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Focused on the technique, interaction and result of visualization, the system for transitional state visualization is put forward, which effectively promotes the transfer, analysis and synthesis course of transitional information with better visualizability, figurativeness and maneuverability. the main work of this dissertation is as follows : the main characteristics of transitional state, such as fuzziness, randomness, fractal and chaos, are concluded. based on the combination of the fuzzy mathematics, stochastic process, fractal and chaotic theory, the feature description model of transitional state is put forward to make itself the foundation of following visualization methods and applications
論文的主要工作包括:系統地提出了過渡狀態的特徵刻畫模型,概括了過渡狀態的模糊性、隨機性以及分形性與混沌性等主要特性,結合模糊數學理論、隨機過程理論以及分形理論與混沌理論等,以過渡率、過渡集合等作為特徵刻畫模型的主要內容,以過渡映射作為特徵刻畫的形成過程,有效地描述了過渡特徵的漸變過程,為可視化方法與應用的具體實現奠定了理論基礎。The thesis comprehensively deliberates stochastic and fuzzy character of controlling the cost of engineering construction ; it takes quantitative analysis as the dominant factor, takes qualitative analysis as the secondary factor, establishes an comprehensive system of controlling the cost, and make various theories, the basic principles and the methods of engineering maths in the analysis and calculation of controlling the cost of engineering construction, such as effect theory, fuzzy maths, value engineering, grey system and system simulation. it also establishes the simple and effective practical model. on the basis of practical example, it puts forwards the train of thought and method to controls the cost of engineering construction in the different stage
本論文綜合考慮了工程造價控制的隨機性和模糊性,以定量分析為主,定性分析為輔,構造了造價控制的綜合體系,將效用理論、模糊數學、價值工程、灰色系統、計算機模擬等多種理論及工程數學的基本原理和方法應用到工程項目造價控制的分析和計算中,建立了簡便而有效的實用模型,並結合工程實例,提出來了不同階段工程造價控制的思路和方法,針對不同的情況,綜合應用定性與定量的控制方法,消除了以往工程項目造價控制只停留于項目實施階段的缺陷,提高了量化研究的水平和準確性,為政府建設管理部門進行科學管理及各建設參與單位今後進一步改進自身的項目造價管理工作提供了寶貴的理論依據。Abstract : presents that the structural failure is fuzzy beside random, and introduces fuzzy maths into the monte carlo method in order to compute the structural failure probability. thus, all kinds of upmost limit state have been united. the examples show the suggested method is completely feasible
文摘:提出結構的失效除了具有隨機性還應具有模糊性的觀點,闡明了用模糊示性函數的蒙特卡洛方法計算失效概率的基本原理,從而將各種極限狀態統一起來,並使計算所得的失效概率更接近於實際.示例表明,本文方法是完全可行的First, we examine whether the momentum strategies and contrarian strategies can create significant profits under different formulation horizons and holding horizons, whether past factors ( market return, characteristic of individual stock ) can provide an important implication about the profits of momentum and contrarian strategies. second, we discuss the reasons for the significant profits of momentum or contrarian strategies, including seasonality, cross - sectional risk factors, time - varying risk premium, industry momentum, and stock underreaction, overreaction, and random walk. third, we discuss the link of time series predictability of stock returns and momentum profits, including stock underreation, overreaction, delayed reaction, and time - varying risk premium
研究目的有四:其一,探討中國股市執行慣性策略或反向策略的顯著獲利模式及與各狀態因子(市場及個股狀態)的關系;其二,全面分析中國股市慣性與反向效應之潛在成因,包括截面風險因素、季節因素、時變的風險溢價、行業慣性效應以及行為金融模型與conradandkaul ( 1998 )的隨機遊走觀點之爭論;其三,構建非效率市場之股票價格運動方程,並基於此,規范地演進慣性效應之時序生成途徑,包括反應不足、過度反應、滯后反應以及風險溢價的時變性;其四,探討中國股市中投資者的特殊信息反應模式,並以此來解讀中國股市的中短期過度反應與反應不足的現象,以及個股間的超前一滯后關系的表現模式及形成機理。With the development of material technology, information technology, automation control technology, aeronautics and astronautics technology, the modern flight vehicles are required of high velocity, light structure, great flexibility and super maneuverability, which lead to the serious aeroelastic effects such as aeroservoelasticity, the coupling among the aerodynamics, structure, and control system
隨著材料技術、信息技術、控制技術以及航空航天技術本身的飛速發展,飛行器開始向高速度、輕結構、大柔性、超機動的方向發展,氣動彈性效應更加嚴重,從而引發了氣動、結構、控制系統相互耦合的氣動伺服彈性力學問題。Are uncertain and should be regarded as random variables, therefore the reinforced concrete frame is stochastic structure inherently, and then its motive equations converted to combined random differential equations for the uncertain parameters and external random excitation. these equations were solved by order - orthogonal expansion method with pseudo - excitation method, and then the statistic stochastic responses of random structure were obtained. at last, based on the stochastic cumulative damage model with double parameters developed by park, formulas were formulated for calculating structural earthquake damage probability using the structural reliability theory ( mainly jc algorithm ) in extensive random space
首先對受地震激勵的剪切型鋼筋混凝土結構進行建模,用隨機等效線性化方法將二階非線性微分方程組化成一階線性微分方程組(或稱之為狀態方程) ;再考慮材料等參數的隨機性,則狀態方程成為復合隨機微分方程組,將擴階系統方法和虛擬激勵方法推廣並應用於這個復合隨機微分方程組,求出結構的隨機響應量的統計參數;最後採用隨機累積損傷破壞準則,在廣義隨機空間內,用jc演算法求解失效概率,進而求出結構的抗震可靠度。Characteristics of stochastic effects
隨機性效應特點Lower the probability of stochastic effects to an acceptable level
將隨機性效應的發生率降至可接受的水平。The severity of stochastic effects is independent of the absorbed dose
隨機性效應的嚴重程度是不受吸收劑量的大小影響。It is generally believed that exposure of fetus at the first 3 weeks of pregnancy should not cause any deterministic and stochastic effect to the embryo
科學家通常認為在懷孕后最初三周內胎兒受到照射,是不會引起活產嬰兒身上出現確定性或隨機性效應。From the biological effects of radiation on human body, radiation effects are generally divided into two categories : " deterministic effects " and " stochastic effects "
確定性效應及隨機性效應輻射照射所做成的生物效應,通常分為確定性效應和隨機性效應兩大類。The limitation on the effective dose provides sufficient protection for the skin against stochastic effects. an additional limit is needed for localized exposures in order to prevent deterministic effects
限值足以防止皮膚的隨機性效應,但對局部照射需設附加限值以防止確定性效應。As stochastic effects of radiation have no thresholds and can cause cancers or genetic modifications, of which the curing rates are rather low to date, they become a major subject of research in
由於現時隨機性效應引發的癌癥和遺傳病的治愈率仍然相當低,又不存在劑量閾值,所以隨機性效應出現率與劑量的關系便成為The severity of stochastic effects is independent of the absorbed dose. under certain exposure conditions, the effects may or may not occur. there is no threshold and the probability of having the effects is proportional to the dose absorbed
隨機性效應隨機性效應的嚴重程度是不受吸收劑量的大小影響。在一定的照射條件下,效應可能出現,也可能不出現,而發生的機率則與劑量大小有關,並且不存在劑量閾值。An improved ar model is studied, which established by the combination normal order time serial and contrary order data in case the observations are less, and then, the combination model with improved grey and time serial is introduced. it can reflect not only the deformation tendency, but also the stochastic characters. it is very suitable to be applied to deformation analysis and prediction
為了充分利用有限的地表變形數據所蘊涵的內在規律性,提出了利用變形數據的正逆時間序列建立ar模型的方法,並與時變灰色模型組合,不但可反應出變形數據序列的趨勢性,同時還可表現出其隨機性,從而可進一步提高預測的精度和效果。( 4 ) according to analysis of water resources characteristics of the dam system, following conclusions are obtained : amount of yearly available water resources of the dam system presents uncertainty ; water resources utilization by the dam system should focus on fully utilization of rainfall, runoff and flood ; meanwhile, water resources exploration of the dam system should reach the objective of maximum economic benefit in years ; a modeling system for water resources utilization and exploration by the dam system is established on the basis of reasonable investment and above objectives
對壩系水資源的特點進行了深入研究,得出以下結論:壩系水資源年可利用量具有較大的隨機性;開發利用壩系水資源就是充分利用降雨和徑流洪水;壩系水資源開發應以多年經濟效益總體期望值最大為目標。同時引入了最佳水資源投入量的概念,並建立了壩系水資源開發利用模型。To improve dynamic performance control effect for air suspension vehicle with half vehicle model as a control object and perpendicular motion and longitudinal acceleration as control indexes, the half - vehicle model fuzzy control simulation was performed by taking grade b road as random input
摘要為了改善空氣懸架客車動態性能的控制效果,以空氣懸架客車1 / 2模型為控制對象,以車身垂直運動和俯仰運動加速度為控制指標,以b級路面為隨機輸入,應用模糊控制技術對1 / 2車輛模型進行了計算機控制模擬分析。When the performance degradation is caused by the discrete cumulative damages, the degradation failure model based on renewal process is proposed and used to analyze the reliability of metallized film pulse capacitors in the laser device. when the degradation process is continuous, two models based on wiener - einstein and gamma processes are presented respectively. because it is difficult to obtain an analytical expression of the failure model using the latter method, we present a failure model based on monte - carlo simulation
根據該模型的特點,給出了基於參數回歸分析的統計推斷方法,分別提出基於比例危險模型的競爭失效分析方法和基於位置-尺度模型的競爭失效分析方法; ( 4 )對于隨機失效閾值問題,研究並給出了相對失效標準下的退化失效模型和分析方法;對強度退化的動態應力-強度干涉失效進行分析,提出了周期性應力作用下的動態應力-強度干涉失效可靠性模型和復合應力作用下動態應力-強度干涉失效可靠性模型。Random seismic responses of civil engineering structure are calculated by employing stochastic vibration equations and moment equations methods of nonlinear structures established and stochastic equivalent linearization. in this procedure of calculation, differential expression of hysteretic characteristics and seismic excitation are taken into consideration
通過已建立的非線性結構物隨機振動方程,納入滯后特性微分表達式,利用隨機等效線性化法和矩方程法,計算了工程結構物的隨機地震反應。A new, random optimization and search method ? gentic algorithm ( ga ) was introduced. its theory and specialty were offered. in this paper, ga was combined with the neural network to control the objects with delay. by choosing a proper form, the results are satisfactory
介紹現在正被逐漸廣泛應用的新型的、隨機性的全局優化方法? ?遺傳演算法,闡明它的基本方法、基本理論、特點,並將其與神經網路相結合,用於控制有純滯后的對象,根據問題選擇合適的具體實現形式,獲得良好效果分享友人