basic variable 中文意思是什麼
basic variable
解釋
基本變量-
In this paper, the folio wings are introduced briefly : holonomic theory ; the basic idea that d. zeilberger used to prove identities using holonomic theory. and wu method is generalized to the non - commutative weyl algebra. furthermore, dialytic method of elimination is replaced by wu method, so the prove can be extended from the single - variable hypergeometric identities to multi - variable ones
本文簡要介紹了完整性理論， d . zeilberger利用完整性理論證明恆等式的基本思想，將吳方法推廣到不可交換的weyl代數上，用吳方法取代了d . zeilberg在證明完整性函數恆等式的理論框架中的析配消元法，從而將這種證明理論由單變量超幾何恆等式的證明擴展到多變量超幾何恆等式的證明。 -
But my focus was specially laid on the decision - making of investment under uncertainty and with competition, i first. extend the basic model of dixit & pindyck ' s by allowing the relevant parameter to be a random variable, then proposed an numerical example to show how to solve this model, i gave the algorithm and did the comparative static analysis, finally i developed a model of duopoly under uncertainty, considering the competition between the firms explicitly, using roa, i calculated the two firm ' s values respectively when they take different roles - to be leader or follower, and then checked the possible equilibriums
本文的重點是考察在同時存在不確定性和競爭的情況下，如何用實物期權的理論估算投資項目的價值，為此，文中發展了兩個模型，第一個模型是對dixit & pindyck的模型的擴展，它通過一個相關的隨機變量來考察競爭對項目價值的影響，但沒有考慮企業間的相互博弈，文中給出了一個例子詳細地說明了該模型的求解並做了敏感性分析；第二個模型是一個不確定情況下的雙寡頭模型，文中給出了用實物期權方法計算的兩企業在處于領導者和跟隨者兩種不同境況時的價值，並將企業間的相互博弈考慮在內，考察了可能的均衡狀態。 -
Part two introduces the theory of panel data. the basic form of panel data is : yi t = it + xi t it + uit, i = 1, 2, …, n ; t = 1, 2, …, t panel data is used for describing the instance of swatch in a collectivity in some time, and observing every unit in swatch multi - scale. basing on the different hypothesis of ui, panel data has fixed effect model and random effect model, if ui is a unit constant ( corresponding to the dummy variable of
基於分析結果，本文給出了改革我國公司治理結構的若干建議: （ 1 ）股權性質方面，培育有效的國家股持股主體; （ 2 ）股權結構方面，逐漸調整股權結構，減少第一大股東持股比例，增加除第一大股東以外的大股東的股權集中度; （ 3 ）董事會方面，採取奇數型董事會規模，並完善獨立董事的生成機制; （ 4 ）激勵制度方面，應加大董事及總經理的持股比例。 -
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。 -
In this study, the load charateristics of submergible centrifugal pump and the influence of various regulating methods on energy dissipation are analyzed. the loading capacity of the submergible motor in variable speed drive control process is analyzed. the papers simple discribe the basic structure of the variable speed drive system in electric submergible pump > principle of pwm inverter and the basic structure of igbt
在研究中，對潛油離心泵負載性能以及閘閥調節和調速調節對能耗的影響進行了分析；對潛油電動機在變頻調速的負載進行了分析；對潛油電泵變頻調速系統的基本結構、 pwm逆變器原理以及igbt的基本結構進行了簡單介紹。 -
This paper researches the basic statistical rule of oil - gas dynamic system from the systematic theory, combining with the common characteristic and structure characteristic of oil - gas dynamic system, taking the design requirement of oil field development programming into consideration, by using of functional simulation principle ( including nn method, differential simulation method ) and historical data of oil field, establishes the in - out conjunctional relationship of dynamic index of oil field development, and researches the two level index prediction of development dynamic with both oil field and oil production plant on the basis of the in - out conjunctional relationship. furthermore, this paper analyzes the " decision - making variable ", " object " and " restriction terms " by the optimization theory and set up several optimal models which compose the oil field development programming, it is following : optimization model of the production composing ( solving the optimal composing of each subentry production and cor responding cost, workload, including the onshore thin oil production, the heavy oil thermal process production, tertiary oil recovery production, and the offshore production ) ; optimization model of measure production structure ( determining the optimal composing of each measure production and measure workload, which is composed of fracture, acidulation, capital repair and so on ) ; optimization model of the production distraction ( optimal distribution of the whole oil field production to each oil production plant ) and the integrated development programming model of oil field
本文從系統理論出發研究油氣動態系統基本統計規律，結合油氣動態系統的一般特點，結構特點，兼顧油田開發規劃設計的要求，利用功能模擬原理（含神經網路方法、微分模擬方法） ，依據油田歷史數據，建立了油田開發動態指標間的輸入輸出關聯關系，並在此輸入輸出關聯關系的基礎上研究了油田及採油廠兩級的開發動態指標預測，同時利用最優化原理，在分析「決策變量」 、 「目標」及「約束條件」的基礎上建立了多個構成油田開發規劃的「優化模型」 ，這些優化模型包括：產量構成優化模型（解決陸上稀油產量、稠油熱采產量、三次採油產量、海上產量及對應的成本、工作量的最優構成問題） ；措施產量結構優化模型（解決壓裂、酸化、大修等各項措施產量及措施工作量的最優構成問題） ；產量分配優化模型（將油田的產量最優地分配到各採油廠）以及油田綜合開發規劃模型。 -
How to vary the two variable quantity of the buck - boost basic circuit on the high frequency switching and whether or not their varying laws are fit for their theoretical conclusion
高頻開關下的buck - boost電路中各個變量的動態變化如何，其變化規律是否與理論上的推導一致。 -
Therefore, the paper expanded eles, namely, turned the above assumption into the following : all the consumers in the same income level have the identical marginal budget share or the identical marginal propensity to consume when consuming certain goods, but consumers in different income level have not and the paper, by defining and introducing the nominal variable of income level - a variable of the marginal propensity to consume only resulting from the change of consumers " ( rural residents ) income level, with which the standard income level was compared, adopted to expand again the extended eles model, exploited the surveying household data in 2001 by liaoning statistics bureau, caculated ( 1 ) the marginal propensity to consume, real expenditure structure, real propensity to consume and marginal budget share of main consumer goods of rural residents in different income levels ; ( 2 ) the proportion of the basic demand quantity, the basic demand structure, the basic demand of main consumer goods in real expenditure of livelihood consumption ; ( 3 ) the income elasticity of demand, the expenditure elasticity of consumption, the price elasticity of demand and the cross price elasticity of demand of main consumer goods ; finally, came the following conclusions : 1
故本論文採用對擴展的線性支出系統進行再擴展，即將上述假定改為： 「對某類消費品的邊際預算份額或邊際消費傾向，對于同一收入等級的所有消費者均相同，但對于不同收入等級的消費者則有可能不同。 」並通過定義和在模型中引入收入等級虛變量，藉以代表與基準的收入等級相比，消費者（農民）僅僅由於其所處的收入等級變化所導致的邊際消費傾向的變化量。本論文採用對擴展的eles模型的再擴展，利用遼寧省統計局農調總隊的2001年農村住戶調查分戶資料（共1890戶） ，計算了（ 1 ）不同收入等級農民對各主要類型消費品的邊際消費傾向、實際支出結構、實際消費傾向、邊際預算份額； （ 2 ）不同收入等級農民對各主要類型消費品的基本需求量、基本需求結構、基本需求占實際生活消費支出比重； （ 3 ）不同收入等級農民對各主要類摘要型消費品的需求收入彈性、消費支出彈性、需求自價格彈性、需求的交叉價格彈性。 -
Its basic principle is to regard selecting or do not selecting a feature as a two - level independent factor ; the parameters of svm as continuous noise factors ; the accuracy of the svm model as the dependent variable ; to employ a fractional factorial experiment design to form the experiment which combines the two - level factors and the noise factors ; after the experiment is finished, to analyze the effect of each factor to determine the effective independent factor combination, namely the best feature combination for the svm model
其基本原?為：將一個輸入變?的選取與否視為一個二水準的實驗因子；將一個? ?視為一個?續的噪音因子；將模型的準確?視為因變? ； ?用部分因子實驗設計得到實驗因子與噪音因子的組合；實驗完畢后，進?因子的效果分析，以決定最佳的實驗因子組合，即最佳的輸入變?組合。 -
9. for calculating the variable fertilizing dose, a mathematics model was selected. the model takes account of the yield goal, soil fertility, fertilizer available ingredient content, and the fertilizer using efficient. in the beijing precision agriculture demo farm, the system was used for base map mapping, field boundary map update, soil nutrition map generating, yield map generating, and field basic information management
在北京精準農業示範區，對設計開發的農田地理信息、系統進行了gps測繪、坐標系轉換、電中國農業大學博士學位論文摘要一子地圖更新、土壤采樣規劃、田間信息分布圖與作物產量分布圖生成、農田管理區劃分、目標產量圖生成、變量施肥處方圖生成以及基本信息管理等方面的測試與實際工作。 -
Chapter 2 discusses the simple financial market consist of only one basic risk simple asset ( as a random variable, its return is simple, i. e., takes only finitely many different values ) and one risk - free asset
第二章討論以簡單的風險資產，即覷回嗣以鰱多有限種不同的可湘的風險資班為基本資產的市場。 -
The algorithm can be applied to connection routing in pcbs with various pad geometry and pad sizes, with different wire widths and variable distances between wires. the basic element in routing is the search line with a given destination. the main features of the router are the target orientation of the search lines, the routing efficiency is guaranteed by rationally designed data structures and by the ability of searching around obstacles, the small amount of working storage and the reasonably short routing time
該布線演算法適用於焊盤外形尺寸不一，線寬及線間距離可變的印刷電路板布線，其基本要素是帶有預定終點的探索線，特點是線探索具有目標針對性，設計合理的數據結構及靈活的繞障探索方式可大大提高搜索效率，所需存儲量小，布線速度快。 -
Aim at ubiquitous parallel multi - reservoir structure in our country ' s basin, the universal objective function including coefficient bi embodying a spatial significance difference at different flood control points and variable ai denoting a selection of scheduling mode is established, which provide a valid intervenor interface for flood control consultation decision. according to the real - time requirement, a model of reservoir storage allocation is proposed, which embody basic idea of phasic compensation. passing the dynamic correction to cut down the disadvantageous influence that indetermination result in on the certain degree, joining together the step alternation solving method, this model can maximally consider bias of decision makers, ensure the rationality and practicability of the solutions
針對我國流域中普遍存在的並聯庫群結構，論文提出包含不同防洪點重要性的系數_ i和選擇調度模式的變量_ i的通用目標函數，為防洪會商決策，提供了有效的人工干預介面，根據實時性要求提出動態分配防洪庫容的庫容分配方法，體現了相機補償的基本思想，通過動態修正在一定程度上可以削減不確定性造成的不利影響，結合分步迭代求解技術，能最大限度體現決策者的偏好，保障解的合理性和可操作性。 -
There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor
本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。 -
Based on sand - storm ' s occurrence times data in ningxia, arctic sea - ice area index data, height and wind fields data of ncar / ncar reanalysis, the basic variable rules and anomalous air circulation background fields of spring sand - storm ' s occurrence times in ningxia are systematically analyzed. more attention was paid on studying the tele - connections between arctic sea - ice areas and spring sand - storm ' s occurrence times in ningxia, and impossible affecting process of greenland sea - ice areas " anomalies on sand - storm ' s occurrence times. the results are as follows : 1
本文根據寧夏沙塵暴發生次數資料、北極海冰密集度資料和ncar / ncep再分析資料，較系統地分析了寧夏春季沙塵暴發生次數的基本變化規律及其異常的大氣環流背景場，重點研究了北極海冰與寧夏春季沙塵暴發生次數之間的遙相關關系以及格陵蘭海冰異常變化對沙塵暴的可能影響途徑，結果表明： 1 、夏春季沙塵暴發生次數在1960 - 2000年有明顯的年代際和年際變化特點，總體呈減少趨勢，且在1984年發生了明顯的突變，有10年和7年左右的周期。 -
The dynamic plan, which is a basic way of math, has great scope for using in optimization regulation. it decomposes a complicated problem into a series of simple problem which contain one variable and agree with the decision having many stages about reservoir ' s optimization regulation
動態規劃法是最優化技術中適用范圍最廣的基本數學方法，它是把一個包含多變量的復雜問題分解成一系列各自只包含一個變量的簡單問題，適合於水庫興利調度的多階段決策。 -
At first an analysis of the basic principles of the vertical - axis variable - pitch turbine is given including two methods to calculate the induced velocity. one is the three different streamtube - methods which are single - disk single - streamtube ( sdst ), double - disk single - streamtube ( ddst ) and multi - streamtube ( mtt ) method based on the momentum theory, the other is the vortex method ( vtth ) based on the potential eddy theory
一是根據動量定理的流管模型得到的求解誘導速度的單盤面?單流管方法（ sdst ） 、雙盤面?單流管（ ddst ）方法、多流管（ mtt ）方法；二是根據勢渦理論得到的求解誘導速度的的渦方法（ vtth ） 。 -
3. the basic variable of family environment has significant negative relationship with the children ' s aggression action in school
3 、家庭環境基本變量因子與幼兒攻擊性?破壞性行為呈顯著負相關。 -
It follows visual basic variable naming conventions
它符合visual basic變量命名規則。 -
Though it ca n ' t explain that a certain rule control the whole system, it tells us that the number of the basic variable composing the whole system is between 2 and 14
雖然它沒有說明究竟哪些規律支配著系統，但它卻告訴我們構成這個系統的基本變量數目在內容提要4個（大於分數維的最小整數）到14個（相空間的維數）之間。
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