[英文釋義] Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In MULTIPLE REGRESSION the dependent variable is considered to depend on more than a single independent variable.
Firstly, the mathematical model of chemical tankers " primary dimension is established by statistical regression method . secondly, rbf neural network is introduced for mathematics modeling of ship and the difference of two methods is compared too 首先采用傳統(tǒng)的統(tǒng)計(jì)回歸方法建立了化學(xué)品船主尺度和主要要素的數(shù)學(xué)模型,然后進(jìn)一步利用rbf神經(jīng)網(wǎng)絡(luò)建立船舶數(shù)學(xué)模型,且對(duì)兩種方法的優(yōu)劣進(jìn)行了探討。
Using the statistical regression model and the electronic industry corporation financial statements data . constructed our country electron industry short-term liquidity synthetic evaluation system, constructed the comprehensive financial risk coefficient of synthetic evaluation enterprise finance condition, and the computation has obtained our country electron industry synthesis finance risk coefficient standard value . using k-s statistics inspection procedure, calculated each appraisal target standard of our country electron industry short-term liquidity, through the actual examination, it is more remarkable to unifies the short-term liquidity and the synthesis finance risk coefficient to analyze enterprise the short-term liquidity, has more reality instruction value, can provide the quite scientific reference for our country electron industry company to analyze the short-term liquidity 綜合考慮影響短期償債能力的各種因素,運(yùn)用統(tǒng)計(jì)回歸模型和電子行業(yè)上市公司財(cái)務(wù)報(bào)表數(shù)據(jù),構(gòu)建了我國(guó)電子行業(yè)短期償債能力綜合評(píng)價(jià)體系,構(gòu)造了綜合評(píng)價(jià)企業(yè)財(cái)務(wù)狀況的綜合財(cái)務(wù)風(fēng)險(xiǎn)系數(shù),并計(jì)算得出了我國(guó)電子行業(yè)綜合財(cái)務(wù)風(fēng)險(xiǎn)系數(shù)的標(biāo)準(zhǔn)值;利用k-s統(tǒng)計(jì)檢驗(yàn)方法,計(jì)算出了我國(guó)電子行業(yè)短期償債能力各評(píng)價(jià)指標(biāo)的標(biāo)準(zhǔn),通過實(shí)際檢驗(yàn)可以看出,把綜合財(cái)務(wù)風(fēng)險(xiǎn)系數(shù)和短期償債能力評(píng)價(jià)指標(biāo)結(jié)合起來分析企業(yè)的短期償債能力效果更顯著,更具現(xiàn)實(shí)指導(dǎo)價(jià)值,能為我國(guó)電子行業(yè)公司短期償債能力評(píng)價(jià)提供比較科學(xué)的參考。
Different equations to corresponding components are presented by analysing and transformating the general equations of fluid routes, then static characteristics mathematical model of liquid propellant space propulsion system is presented . based on the data of static characteristics calculation, mass model of thruster, propellant, propellant tank, gas, gas bottle, pipe and valve is presented using both the method of statistical regression and the method of stress analysis, then corresponding mass model is presented . based on the characteristics of liquid propellant space propulsion systems, analyse the five phases ( concept and definition, design and improvement, manufactureing and arrangement, operation and ma intenance, disposal ) in which life cycle cost of liquid propellant space propulsion systems is cost separately, then discompsed structure of life cycle cost and model of life cycle cost are presented 將組件分成氣路組件和液路組件,再對(duì)氣路組件和液路組件進(jìn)行相應(yīng)的分類,然后通過對(duì)通用流路方程進(jìn)行分析和變換對(duì)不同類型的組件分別建立不同的方程,從而建立了一個(gè)適用于液體推進(jìn)劑空間推進(jìn)系統(tǒng)的靜態(tài)數(shù)學(xué)模型;根據(jù)靜態(tài)計(jì)算所得到的數(shù)據(jù),應(yīng)用統(tǒng)計(jì)回歸法和應(yīng)力分析法分別建立推力室、推進(jìn)劑、推進(jìn)劑貯箱、氣體、氣瓶以及導(dǎo)管和活門等的質(zhì)量模型,從而建立相應(yīng)的質(zhì)量模型;結(jié)合液體推進(jìn)劑空間推進(jìn)系統(tǒng)特點(diǎn),對(duì)液體推進(jìn)劑空間推進(jìn)系統(tǒng)全壽命周期費(fèi)用發(fā)生的五個(gè)階段(概念和定義、設(shè)計(jì)和改進(jìn)、制造和安裝、運(yùn)行和維修、處理)分別進(jìn)行分析,建立了液體推進(jìn)劑空間推進(jìn)系統(tǒng)全壽命周期費(fèi)用分解結(jié)構(gòu)和全壽命周期費(fèi)用模型。