index variables 中文意思是什麼
index variables
解釋
索引變量-
And also expounding that the first - fight - time can give explanation to the advanced techniques, the estimating ranges of first - fight - time in alcc estimating are expanded. the type - changed index and type - difference are selected as dummy variables. it has discussed mearsursion of type - changed index, and three criterions and three methods to set models including the dummy variable are got
說明性變量選取：說明性變量的選取基於費用因子分析，特別討論了首飛時間對費用預測的影響，論述了首飛時間能對技術先進性作出說明，拓寬其在費用預測中的作用，選取改型指數虛設變量，研究了改型的量化方法，提出了判別準則和實現方法。 -
Other factors that were found to have positive effects on soil nutrients include the multiple cropping index and the practice of plowing stalks back into the land. these findings lead to several policy recommendations. first, it shows that economic variables are very important in determining changes in soil fertility, and therefore the theory and method of economics should be taken seriously by soil scientists
然後，根據理論預期以及單因素分析結果，我們建立了土壤肥力變化的社會經濟及政策影響因素模型，分別採取差分和固定效應兩種具體模型形式，對各種可能的社會經濟及政策因素對土壤肥力變化影響的方向和程度做了定量估計。 -
This index then is decided to contain the fluctuation of both income and consumption instead of focusing only on one factor, and it should be measured by the squared resid of the time serial simulation of variables, rather than commonly used group variations or other indirect indices, which are quite different from formal researches. besides, the accuracy of the ecm model will be greatly underlined
在計量方法上，筆者分析了各種方法的利弊，最終放棄了前人常用的組間方差法、間接變量法和主觀報告法，而使用了更切合經濟含義且更具相關性、更客觀的殘差平方（對變量進行時間序列模擬后得到，稍後會作取對處理） 。 -
Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures
此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。 -
Specially, based on risk - metric and factor variables, the author discusses multi - factor asset pricing model. in theoretical analysis, the author attempts to release the assumption of index ' s random walk, proves a portfolio selection model suitable for the linear index level moreover, based on assets un - exchangeable, the author brings forward asset pricing models for b - shares, h - shares and non - circulated - shares. the author also brings forward multi - factor asset pricing model based on risk - metric indices, such as coefficient of beta, standard variance, standard semi - variance, average absolute deviation, value at risk, and factor variables, such as circulated market equity, exchange ratio, short - term historical return
在理論分析時，作者嘗試放鬆指數水平滿足隨機遊走過程的假設，推導出指數水平呈線性趨勢的資產組合選擇模型；此外，作者基於資產不可交易這一假設，提出了b股、 h股和非流通股等情形的資產定價模型，並基於系數、標準差、標準半方差、平均絕對離差和風險價值等風險度量指標以及流通市值、換手率、短期歷史收益率等因素變量提出了四因素資產定價模型。 -
Second, we select appropriate variables according to the monetary policy transmission mechanism, monetary indicator and the mutual correlationship between the monetary policy and real estate market. we choose corresponding data represented the loan, money supply and interest rate as monetary indicator. and we collect commercial house sales amount and zhongfang housing sales price index of shanghai as the represented variables in china real estate market
而後根據貨幣政策傳導的機理、貨幣政策中介目標的理論研究和房地產市場與貨幣政策的關聯機制，選擇了較為合適的數據代表信貸、貨幣供應量和利率作為貨幣政策的中介目標，房地產市場商品房銷售額，與中房上海住宅銷售價格指數作為中國房地產市場的代表變量。 -
In this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes
本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的 -
Abstract : in this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes
文摘:本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的 -
Tts creativity consists in that the use of the quantiative index - - the atandard deviation of the npv can make the analysis reflect the prachce mor objechvely, and that it is a opeiilng system that new variables can be added into according to the practical conditions, which both increase the prachcal value of the system
它較已有分析系統的創新處在於：用凈現值的標準差來對房地產投資的各種風險進行定量化，使風險分析更加客觀地反映真實的經濟狀況。同時該系統模型還是一個開放的系統，它並不局限於某幾種風險的分析，可根據實際情況不斷加入新的變量，其實用價值較高。 -
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 stress is basing coal - fired boiler inflammation system feature and control demand to design a kind of fuzzy - pi controller on based of genetic algorithm to control it. the controller refers the error and its variety rate as its inputs. and, in order to make the control qualities much better, concerns them as the performance index to optimize the membership function of the fuzzy variables and the pi ' s controller parameter by means of online adjujsting the genetic algorithm, inflammation system steam pressure loop and economic inflammation loop
重點是針對燃煤鍋爐燃燒系統的特點和控制要求，設計了一種基於遺傳演算法的模糊- pi復合控制器對其進行控制，該控制器以偏差、偏差變化率作為輸入量，通過遺傳演算法在線調整模糊控制器的模糊變量隸屬度函數和pi控制器的參數，從而達到優化模糊控制規則和pi控制器參數的目的，實現燃燒系統的蒸汽壓力迴路和經濟燃燒迴路的控制要求。 -
Abstract : design ideas, technical features and system architectures of advanced process control for polypropelene units were introduced together wit h on - line calculations for the controlled variables such as the yield of polypr opelene, concentration of monomer, hydrogen concentration in liquid phase and the melt flow rate index. attentions in implementation were pointed out
文摘:介紹聚丙烯裝置先進控制技術的設計思想、技術特點和系統構成，並介紹產率、漿液濃度、液相氫氣濃度、熔體流動指數等被控變量的在線計算，指出了實施中應注意的問題。 -
And then, it especially introduces the theoretical basis of pert predicted method and the technology of monte - carlo simulation, it ascertain the random variables of the model by analysing the uncertainty factors of economic effect index. and it brings forward random npv model in the light of basic npv model. using the theory of expected utility to evaluate the risk of project by the probability distribution of project ' s npv
通過分析影響項目經濟效益指標的不確定性因素，確定了模型的隨機變量；根據基本凈現值模型提出了隨機凈現值模型；通過項目凈現值的概率分佈運用期望效用理論對項目的風險進行評價。 -
A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function
把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。 -
( 4 ) some nonlinear variables are good index for analyzing and forecasting stock market. examples involved are following : hurst index ( h ) substitutes for variance to evaluate risk in securities investment ; dynamic fractal dimension is a prior indicator of price movement
（ 4 ）某些非線性變量可作為分析和預測股票市場的很好指標，如赫斯特指數h值可用來取代方差作為衡量證券投資風險的標準，而動態分形維則可作為市場價格變化的先行指標。 -
Some variables regional distribution over south ningxia is given out in the course of evapotranspiration estimation : the regional distribution of surface characteristic parameters ( normalzed difference vegetation index, surface albedo, surface temperature ), radiation balance components ( surface absorbed shortwave radiation, surface longwave radiation, atmospheric counter radiation, net radiation ), surface heat and balance components ( soil heat flux, sensible heat flux, latent heat flux )
估算區域蒸發（散）量的過程中，得到許多有意義的量：地表特徵參數（植被指數ndvi 、地表反射率、地表溫度） ；地表輻射平衡各量（地表短波吸收輻射、地表長波輻射、大氣逆輻射、地表凈輻射） ；地表熱量平衡各量（土壤熱通量、顯熱通量、潛熱通量） 。 -
Bootstrapped stepwise logistic regression was used to identify potential predictors of fl among 13 variables of interest [ gender, age, ethanol intake, alanine transaminase, aspartate transaminase, gamma - glutamyl - transferase ( ggt ), body mass index ( bmi ), waist circumference, sum of 4 skinfolds, glucose, insulin, triglycerides, and cholesterol ]
使用靴帶逐步邏輯回歸在13個變量[性別，年齡，酒精攝入量，丙氨酸轉移酶，天冬氨酸轉移酶， -谷氨酞轉移酶（ ggt ） ，體質指數（ bmi ） ，腰圍， 4點皮膚褶總和，血糖，胰島素，甘油三酯，膽固醇]中識別出潛在的預測因子。 -
The price index is used to eliminate the impact of monetary variables in order to get the real aggregations, which are thought of more important than the nominal aggregations
價格指數的主要作用被認為是一種工具，用來消除經濟總量中貨幣因素的影響，以得到更有意義的實際總量。 -
Mathematics statistic model of the main observation variables and horizontal displacement hybrid model of typical monolith of huangtankou concrete gravity dam are established. through model analysis and parameter inversion, taking into account of water level and temperature, deformation monitoring control index of typical monolith is determined by the improved method of probability. the primary contents are as follows : 1
建立了黃壇口混凝土重力壩主要觀測量的數理統計模型和典型壩段水平位移混合模型等，通過對各數學模型的分析和參數反演，綜合考慮水位溫度採用改進小概率法擬定了典型壩段水平位移的監控指標，得到一些有益的結論，其主要內容如下： 1 -
The article set up 2 - dementional steady heat conduction model and equations based on buried channel waveguide, and solved the equations by separating variables method. using mathcad, 2 - d temperature distribution and the influenced refractive index distribution by thermo - optic effect were plotted in waveguide section area
本文先以埋入式溝道波導為例，建立了二維穩態熱傳導方程模型，用分離變量法推導了方程解，並用mathcad2000在波導截面上繪出了二維溫度分布圖和受到熱光效應影響的折射率分布圖。
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