three-variable model 中文意思是什麼
three-variable model
解釋
三變量模型-
Although economic and population specialists and scholars both in abroad and at home have made extreme progress on research the question of rural labor since they studied it very long ago, as far as china is concerned, based on the following three aspects, firstly, the national condition of our country determined that the foreign theory such as lewis theory might instruct us but we ca n ' t use these theories without rectification ; secondly, in china, our research about this question prefer the qualitative analysis to the quantitative analysis ; thirdly, the research on the labor utilization and shift in this specific area, that is, in the mountainous rural area which covers 69 % of our mainland and occupies 56 % of population is absolutely scarce in present ? to make up for the three deficiencies, this paper selects the econometrics analysis, uses investigation data and by virtue of tsp software, establishes a model where shift labor is the dependent variable and the citilization ratio, industrial structure, the income gap between city and country, the rural infrastructure construction, the labor ' s aptitude and the population ' s natural growth ratio are the variableso through economic, statistical and econometrical test, the conclusion is attained : the income gap between city and country and the citilization ratio are the two most important fectors which affect the labor ' s utilization and shift in mountainous rural area -, the rural infrastructure construction and the labor ' s aptitude are the two relative important factors which affect the labor ' s utilization and shift in mountainous rural area while the rural industrial structure and the population ' s natural growth ratio are the two least important factors according to this, this paper puts forward several suggestions that the income gap between city and country, citilization ratio, rural education, rural industrial structure and agricultural mechanization should be carefully treated with on studying the question of labor utilization and shift in mountainous rural area. finally, this paper points to several suspending problems about this research in order to get the concern of specialist and scholars
盡管國內外經濟和人口學方面的專家與學者很早就開始了對農村勞動力問題的研究並取得了極大的進展，但是，我國在研究農村勞動力問題時，基於三點：其一，我國國情決定了國外的理論例如劉易斯理論，雖然對研究我國的農村勞動力問題具有指導意義，但卻不能照搬這些理論；其二，從國內看，我國對該問題的研究重視定性分析而定量分析明顯不足；其三，缺乏對我國占國土面積69 、人口56的山區農村這一特殊區域內的勞動力開發利用及轉移的專門性研究。為了彌補這三個缺憾，論文採用經濟計量學的數量分析方法，利用實際調查資料，藉助tsp軟體，建立了以外出勞動力數量為被解釋變量，城市化率、農村產業結構、城鄉收入差距、農村社會基礎設施建設、農村勞動力素質以及人口自然增長率六個變量為解釋變量的模型，通過對該模型進行經濟學、統計學、經濟計量學三個方面的檢驗，得出如下結果：城鄉收入差距和城市化率是影響山區農村勞動力開發利用及轉移的最重要的兩個因素；農村社會基礎設施建設和農村勞動力素質是較為重要的兩個影響因素；而農村產業結構和人口自然增長率相對來說是較不顯著的影響因素。據此，本文提出了在研究山區農村勞動力開發利用及轉移問題時，應慎重對待城鄉收入差距、城市化水平、農村勞動力素質、農村產業結構、農業機械化五個問題。 -
The qualitative analysis method includes standardization investigate method, " four stage symptom " analysis method, " three months fund turnover chart " analysis method, technological process picture analysis and mark management method. the quantitative analysis method includes single variable model, various variable model, z score model, f score model, relative liquidity target and the way of empirical analysis
其中定性分析法介紹了標準化調查法、 「四階段癥狀」分析法、 「三個月資金周轉表」分析法、流程圖分析法和管理評分法；定量分析法介紹了單變量模型、多變量模型、 z計分模型、 f計分模型、相對流動性指標和實證分析方法。 -
It is desirable for all related insiders and outsiders to discern all potential risk in advance. this paper, with the adoption of special treatment resulted from abnormal financial position as the indicator of financial distress, the univariate variable analysis and multiple variable analysis as the research approach and some financial ratios as variable, tries to find an optimal financial distress prediction model of chinese manufacturing listed companies based on public accounting data. our finding demonstrate that five general financial ratios and three ratios concerning the cash flow have better predicting ability, the erroneous classification ratio are low. these five general financial ratios are earning per share, return on net assets, return on gross assets, growth rate of net profits, growth rate of net assets ; the three ratios concerning the cash flow are net cash flows from operating activities per share, net re - earnable cash flows / current liability, net cash flows from operating activities / net profit
研究結果表明，在單變量分析中，每股收益、凈資產收益率、總資產報酬率、凈利潤增長率、凈資產增長率這5個財務比率的錯分率較低、預測能力較強；經營活動凈現金流量與凈利潤之比、每股經營現金流量、可重復賺取的現金凈流量與流動負債之比這三個現金流量財務比率對于預測上市公司財務困境具有有效性；多變量分析中，應用費雪判別分析和典則判別分析得到兩個判別模型，在典則判別分析中，應用兩種方法確定所建模型的最佳分界點，檢測證明應用所得兩個判別模型進行財務困境預測的準確率很高。 -
The thesis consist of six chapters and based on the way of propose the question, analysis, then get the solution. it discussed and recognized what the ship transportation cost was in chapter one ; studied the environment and growing trend of the cost in chapter two ; fully discussed and demonstrated the voyage variable costs and controlling method, proposed a mathematic decision model of fuel supplying and get through the validation, proposed the concept of risking cost and addressing many controlling measures to it in chapter three ; discussed a certain running costs, proposed and validated a mathematic model of condition - based maintenance, and put forward many practical controlling method of running costs such as crew payment, repairs, spare parts, stores and lub oils in chapter four ; combining a case of monthly running cost budget and verification, performed a useful learning on running cost budget, forecast and verification in chapter five ; finally fully studied the method of cost - calculating and benefit - analyzing of time chartering container ships on a proposed route
第一章主要討論並認清什麼是船舶運輸成本；第二章研究了船舶運輸成本的生存環境和生長趨勢；第三章詳細論述並論證了航次變動成本的控制措施，提出了燃油補給方案的決策模型並給出了模型的驗證過程，提出了航次風險成本的概念並論述了若干航次風險成本的控制措施；第四章對船舶營運成本中的船員費用、維修保養費用、備件、潤物料費用等幾個主要的可控性較高的成本進行了細致的分析並分別討論了相應的控制措施，提出了基於狀態維修決策的數學模型並論證了模型的正確性及具體解算步驟，對于備件、潤物料的控制堅持以科學的預算為前提，以申領、接收、使用、盤存為控制環節，切實做到理論與實踐的密切結合；第五章結合營運成本的預核算的案例，對船舶運輸營運成本的預算及核算進行了有益的探討；第六章結合具體案例對期租班輪的成本測算與效益分析方法進行了細致的研究。 -
2. build a mathematic model of variable capacity system, simulate the steady - state performances of three different structures, and obtain their trends of performances and compositions with inlet temperature of evaporator descending
建立了變濃度容量調節的數學模型，對三種不同結構的系統進行了穩態模擬，得出其各自性能及組分隨蒸發器進風溫度的下降而變化的趨勢。 -
The comparison of three models ( single variable time series model 、 multivariable time series model and gray prediction model ) shows that the multivariable time series model ' s prediction precision is the highest. it indicates that using recurrent composed bp networks can exactly predict the boiler fault in order to prevent the fault, and help operator of power plant to adjust the parameters in a permitting range
通過基於遞推合成bp網路的單、多變量時間序列模型與灰色預測模型的預測精度分析計算表明，應用基於遞推合成bp網路的多變量時間序列模型能較準確的預測鍋爐故障，指導運行人員對機組進行即時調整，使預期的參數在允許范圍內，以避免故障的發生。 -
By using pro / engineer, three - dimensional parametric model of arm is presented for further design of arm and layout between satellite and antenna. independent variable parameters of hoop truss and relations between assemblies are obtained by analyzing the function, basic theory and construction properties of hoop truss
通過對衛星天線環形桁架的功能、結構及工作原理的分析，確定了天線環形桁架結構的獨立可變參數並建立了各裝配間的參數協調關系，在此基礎上藉助三維參數化造型技術，獲得了天線環形桁架的三維參數化實體模型。 -
In chapter three we research the mechanism of screening entrepreneurial ability and selection of manager for firm. with the application of " revelation principle " to the model that we have made for the condition that the variable of entrepreneurial ability has " a linear down distribution ', we compare the solution to our model with the solution to the first - price sealed auction model. with the model we have made we study the mechanism of self - screening entrepreneurial ability
通過運用「顯示原理」我們構建了一個適應「企業家能力變量的分佈是線性下降」情況下的拍賣博弈，該模型的解和假設「估價是均勻分佈」的「一級密封價格拍賣模型」的解不同，我們比較了這個不同的經濟含義，並利用該模型研究企業家能力的自我甄別機制。 -
It further uses partial correlation analyses to filter out five financial ratios to be the explain variable candidates. by logit regression it finally develops an early - warning model with three explain variables
對這五個指標進行logit我國商業銀行風險的早期預警模型研究分析，最終得到一個包含三個解釋變量的fogh模型。 -
First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。 -
First with section analysis and single variable, this essay analyzes the difference of twenty - one financial indexes between st and no st stock companies in five years basic financial data. at last, three financial crisis prediction modes are set up with six financial indexes which are the most important financial indexes in linear probability model, fisher linear analysis model and logistic analysis model
首先應用剖面分析和單變量判定分析，研究財務危機出現前5年內各年這二類公司21個財務指標的差異；最後選定6個財務指標為預警指標，應用lpm多元線性回歸分析、 fisher線性判定分析和logistic回歸分析三種方法，分別建立三種預測財務危機的模型。 -
The part using the data of population agglomeration degree and labor amount of three industries, according to the econometrics principle, constructs the multi - variable linear regression model for each of the 31 provinces, municipalities and autonomous regions " so as to find out the realistic relationship between city and industrial development all through the country
文章根據全國以及全國31個省、直轄市和自治區的城市人口聚集度與三次產業從業人員的數據關系運用計量經濟學原理一一構建了多元線性回歸模型，以揭示我國各地區的城市發展和產業結構的實際關系，並得出一系列結論。 -
According to construction features of three - span prestressed concrete and continuous rigid frame box with v pier bridge, the paper demonstrates the shell finite element theories, c onstruct the spatial model, and researches its spatial stress and variable regularity under different loads including uniform load, concentrated load and prestressing force wire. morever, the paper studies vibratory modal of three - span prestressed concrete and continuous rigid frame box with v pier bridge, and sets about experimental investigation of the corresponding practical bridge
本文根據典型的三跨預應力混凝土墩連續剛構橋的特點，提出採用板殼有限元法計算理論，建立其空間分析模型，研究該橋在不同荷載（均布恆載、集中活載、預應力束）支承條件下的空間受力特性和變化規律：探討了典型三跨預應力混凝土墩連續剛構橋的空間靜動力特性及相應的振動模態；探索一般的平面理論預測值與實際空間效應的差異，並進行相應的試驗研究。
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