stochastic uncertainty 中文意思是什麼
stochastic uncertainty
解釋
隨機不確定性- stochastic : adj. 1. 機會的；有可能性的;隨便的。2. 【數學】隨機的。
- uncertainty : n. 1. 不確定，不確實，易變；不可靠；含糊。2. 不確實知道，半信半疑。3. 【物理學】測不準性。
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Abstract : considering the stochastic characteristic of main hydrogeologic parameters in yuanbaoshan open coal pit, a groundwater stochastic management model for optimal drainage borehole design is established. the result of the modeling shows the effect of stochastic characteristics of hydrogeologic parameters on the result of management modeling. it was found that the higher the parameters uncertainty and the management reliability level, the worse the management result
文摘:從影響元寶山露天礦地下水疏乾的主要水文地質參數隨機性特徵分析入手，建立並求解了元寶山露天礦疏干工程優化設計的隨機地下水管理模型，揭示了水文地質參數隨機性對管理模型結果的影響，認為參數的隨機性越大，管理結果越壞；置信水平越高，管理結果越壞，且滲透系數和邊界條件對管理結果影響最大。 -
The problem of dual control is studied for the stochastic system of which the uncertainty model is polytopic
摘要針對不確定性模型為多胞型的隨機系統進行了對偶控制的研究。 -
Under the consideration of the uncertainty of the water environmental system, both the observed data of the river water quality and the parameters for the river water quality model are processed as the stochastic variables herein
摘要考慮到水環境系統的不確定性，把河流水質觀測數據和水質模型參數都作為隨機變量來處理。 -
A great deal of problems are connected with analysis and design of system which is interfered by enviroment ' s uncertainties. this kind of uncertainties are due to different sources. one kind of disturbation sources happen because of unefficient conditions which lead to the uncertain cause and effect relation which show the uncertainies on the happening or not of the affair. it is the so called stochastic character. the other kind of disturbation sources are the character that it is both this and that which appears in the transition of the thing ' s difference which is called the fuzzy character. the third disturbation sources are the uncertainty which happens due to the effect of the fuzzy character and stochastic character which is called the fuzzy and stochastic character
大量實際問題都涉及到對受環境不確定性干擾的系統的分析和設計，這類不確定性干擾可由不同的源產生。一種干擾源是由於條件不充分，使得在條件與事件之間不能出現確定性因果關系，從而在事件的出現與否上表現出的不確定性，這種不確定性稱為隨機性。另一種干擾源是事物的差異在中間過渡時所呈現的亦此亦彼性，這種不確定性稱為模糊性。 -
It has shown by the uncertainty of the data of fatigue experimentation and the size deviation of machine accessory and structure component and the original defect of materials that all of the stress and intensity and the factors that affect them are stochastic variables, so we should deal with the problem of fatigue by the method of probability and statistics to making the engineering life deduced by fatigue intensity to be the reliable life under a certain probability
疲勞試驗數據的離散性，零件和構件加工允許的尺寸偏差，材料中分佈的原始缺陷，以及受載零件危險部位應力響應的分佈特性等，都說明應力和強度以及影響它們的因素都是隨機變量，它們有各自的分佈形式，應該用概率統計理論和方法來處理，才能使疲勞強度在工程中所確定的壽命，成為保證某一概率下的可靠壽命。 -
This paper firstly applied sequential cluster method to set up the classification standard of precipitation state based on the fact that there are much uncertainty and imprecise characteristics in the precipitation course ; then this paper presented a method which is called markov chain with weights to predicted the future precipitation state by regarding the standardized self - coefficients as weights based on the special characteristics of precipitation being a dependent stochastic variable ; and applied this method to a real hydrological observation station with nearly 50 years precipitation information in shanxi province at last, an ideal result was obtained
摘要首先基於降水過程存在大量不確定性、不精確性的特點，應用有序聚類的方法建立降水豐枯狀況的分級標準；然後針對降水量為相依隨機變量的特點，採取以規范化的各階自相關系數為權重，用加權的馬爾可夫鏈模型來預測未來降水的豐枯變化狀況；最後以山西省某水文站近50年的降水資料為實例對該方法進行了具體的應用，獲得了較為滿意的結果。 -
From the angle of uncertainty of inflow and water consumption, the risk of water dispatching on the lower reaches of the yellow river is analyzed. inflow series are generated by use of the method of representative disaggregation. water consumption series are generated according to rainfall probability distribution. a model for risk analysis of water dispatching is established with the technique of stochastic simulation, and a quantitative description of risk is presented, thus, making the water dispatching decision - making more scientific
從來水和用水不確定性角度分析黃河下游水量調度風險.對來水採用典型解集方法生成來水系列，對用水根據降雨概率分佈生成用水系列，利用隨機模擬技術建立了水量調度風險分析模型，給出風險的定量描述，從而使水量調度決策更加符合實際 -
This dissertation is meant to combine the theory of stochastic processes and the theory of fuzzy sets to find some new methods of system modeling, analysis and control by describe uncertainty more minutely, and then to balance the optimization and the robustness
本文的目的是綜合運用隨機過程和模糊集合論的方法，通過更加精細地刻畫系統不確定性，探索具有模糊隨機不確定性的系統建模、分析和控制的新方法，並期望在最優性與魯棒性之間尋求比較好的結合點。 -
The pavement system with the complicated structure is always considered as a large surface layer bearing on the infinitely deep foundation. due to complexity and variety of materials and stochastic uncertainty of load boundary condition, many mathematic and mechanic problems will occur in obtaining stress and displacement solutions of the pavement system
路面體系在構造上比較復雜，它通常是一個大面層，支承在無限深的地基上，由於體系材料復雜性、多樣性和荷載邊界條件的隨機不確定性，在解算它的內力、位移時會遇到很多的數學和力學上的困難。 -
Thus, according to mechanics of dealing with stochastic phenomena in programming theory, multi - objective stochastic programming model is developed to dispose parameter uncertainty. as a heuristic monte carlo approach with powerful global searching, genetic algorithm based on stochastic programming is utilized
為了更好的處理實際生產中參數的不確定性，根據數學規劃論中處理隨機現象的機理，建立多目標隨機規劃模型，模型求解採用基於隨機規劃的遺傳演算法。 -
This course covers the basic models and solution techniques for problems of sequential decision making under uncertainty ( stochastic control )
這門課程涵蓋了不確定情況下（隨機控制）連續決策組合問題的基本模型與解題技巧。 -
Uncertainty of structure can be classed into two different categories. one is stochastic uncertainty. the other is fuzzy uncertainty
結構的不確定性分為兩類，一類為隨機性，另一類為模糊性。 -
This paper first presents the uncertainty of water resources and the process of fuzzy set theory in this field, then analyzes the current conditions of agricultural water resources and its sustainable developments in our country. based on the researches in this field, considering its character of multi - objective, multi - layer, multi - function and multistage, this paper mainly deals with the fuzziness and stochastic uncertainty of agricultural water resources system. the major contents and research results are as follows : 1 based on chen shouyu ' s fuzzy set theory, this paper presents a fuzzy optimal multi - dimension and multi - objective dynamic programming model, then two methods are given
本文首先闡述了水文水資源的不確定性及模糊水文水資源學的發展現狀，分析了我國農業水資源現狀及其可持續利用，在論述區域農業水資源優化領域研究現狀的基礎上，鑒于農業水資源系統優化的多目標、多層次、多功能、多階段、多維與隨機的特徵，針對系統中普遍存在的模糊性和隨機性開展研究，主要研究內容和研究成果概括如下： 1 、基於陳守煜提出的多目標模糊優選動態規劃理論，提出復雜水資源系統的多維多目標模糊優選動態規劃問題的兩種求解辦法：多維多目標的決策序列相對優屬度總和最大法和多維多目標階段模糊優選動態規劃方法。 -
In continuous - lime framework, assuming that asset price follows stochastic diffusion process, it introduces parametric uncertainty, and applies stochastic dynamic programming to derive the closed - form solution of optimal portfolio choice, which maximizes the expected power utility of investor ' s terminal wealth ; in discrete - time framework, continuous compounding monthly returns of risky asset are assumed to be normal i. 1. d., it applies the rule of bayesian learning to do empirical study about two different sample of shanghai exchange composite index
在連續時間下假設資產的價格服從隨機擴散過程，引入參數不確定性，利用隨機動態規劃方法推導出風險資產最優配置的封閉解，使投資者的終期財富期望冪效用最大；在離散時間下假設風險資產的連續復合月收益率服從獨立同分佈的正態分佈，通過貝葉斯學習準則，以上證綜合指數不同區間段的兩個樣本做實證研究。 -
According with analyzing the forces acting on a particle, put forward the particle accurate motion trajectory which is determined by the certainty axial and radial force, as well as the uncertainty stochastic forces based on the above factors, the following motion characteristics between the solid and the liquid was analyzed, the following property of solid - liquid exists in all radial, axial and tangential directions
摘要通過對旋流器內固體顆粒的受力分析，提出固體顆粒精確運動軌跡結構是由確定性的徑向力、軸向力以及不確定性的隨機力所決定，並對固體顆粒存在的隨機因素進行了分析。 -
Under the analytical framework of the principal - agent theory and the transaction cost theory, this thesis will apply stochastic optimal control model to analyze the agent ' s action and welfare under uncertainty and a share contract
本文擬在委託代理理論和交易成本理論的框架下用經濟學中廣泛運用的隨機最優控制理論，對不確定性與分成制契約條件下的代理人的行為選擇及福利水平作一個比較深入的研究。
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