stepwise method 中文意思是什麼

stepwise method 解釋
分段法
  • stepwise : adj. 1. 逐步的，逐漸的，分段的。2. 【音】轉換音級的。adv. 按階段地，逐步地。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Thus this paper puts forward the dynamic time series period analysis and prediction model. it combines the basic principle of the stepwise regression period analysis to the multiplayer - transfer method. it can not only effectively select every latent period of a time series, but also take advantage of the selected latent periods to make a long - term prediction

    因此本文提出了動態時間序列周期分析預測模型，它是將多層遞階方法與逐步回歸周期分析的基本原理相結合，使之既可以有效地選取時間序列的各個隱含周期，也可以利用所選取的隱含周期作較長的時間預測。
  2. ( ii ) this paper makes the annals data of the listed companies in 2004 as sample, and gets earnings per share and the regression equation of the four financial indexes which have noticeable effect on it via stepwise regression method. the four financial indexes which affect earnings per share are the net asset per share, unaccommodated profit per share, quick ratio and return on assets respectively. the equation provides a

    （二） 、以河南省上市公司2004年年報數據作為樣本，應用逐步回歸方法，得到每股收益和對它有顯著影響的四個財務指標的回歸方程，影響每股收益的四個財務指標分別是:每股凈資產、每股未分配利潤、速動比率和總資產報酬率，為這些上市公司提高每股收益提供參考。
  3. We analyzed the data by applying analysis of variance ( av ), multiple stepwise regression analysis ( msra ), canonical correlation analysis ( cca ) and so on. additionally, new developing statistical method, linear structural relations ( l1srel ), was employed to throw light on the substantial acting mechanism

    應用傳統的（協）方差分析、多元逐步回歸分析、主成分回歸分析、嶺回歸分析、判別分析和典型相關分析等統計方法對影響學習成績的因素進行分析，並採用新近發展的線性結構方程模型（ linearstructuralrelations ， lisrel ）分析影響學習成績的? ?各個因素並探討其影響機制。
  4. Results show that a three - stepwise weight function correction method is effective and applicable and can be spread in other basins. it can eliminate the outlier of rainfall data and improve the accuracy of flood forecast

    計算結果表明，採用雨量觀測誤差三步權函數修正法是有效的，能準確剔除雨量資料的粗差，改善雨量資料的合理性，提高洪水預報的精度。
  5. Based on polymerization reaction of the nylon - 6 rubberized cord fabric production of distributed control system in yangzhou organic chemical plant computer integrated manufacturing system ( yh - cims / dcs ), the multiple stepwise regression method was used to build the statistic mathematical models of the molecule weight and the monomer quantum of casting slice belt. then the optimization model of polymerization reaction was presented, which was solved by using simulation annealing algorithm to obtain the best techniques parameters. the improved hybrid genetic algorithm and back propagation algorithm are combined to train neural network, brought out the neural network prediction model of casting slice belt ' s average molecule weight to guide the technologist on - line

    提出了流程工業生產過程操作優化策略和應用實施方法，包括生產過程離線優化策略、非線性問題求解策略、在線優化模型及學習策略；結合揚州有機化工廠計算機集成製造系統集散控制系統（ yh - cims dcs ）的實施，針對錦綸? 6浸膠南京理工大學博士學位論文摘要簾于布生產中己內酚胺聚合反應過程優化控制這一工程實際問題，採用統計建模方法，建立了聚合反應過程的優化模型；為求解所得的優化模型，提出了種改進的有約束條件下的模擬退火演算法，該演算法能避免陷於局部最優解，有效地提高了所求解的全局性和可靠性：提出了基於改進的ga演算法和sp演算法相結合的混合學習演算法，建立了基於神經網路的聚合反應過程生產目標在線預測模型，該演算法和模型滿足了生產中的實時性和實用性要求。
  6. Based on the capacitance distributions from 12 - electrod capacitance sensor, using stepwise regression method, the capacitance relation of oil - gas two phase flow based on flow pattern is developed

    摘要基於12電極陣列電容傳感器提供的電容測量信息，採用逐步回歸方法，獲得了與流型相關的電容關聯式。
  7. Taking non - finance chinese listed companies in a share securities market as the example, the paper applies statistical and metric method, rational analysis and empirical evidence to study the existing situation of the debt maturity structure and its impact factors and determinants. with the help of spss, the paper analyzes 656 sample companies ’ financial data from 1998 to 2004 to describes the debt maturity structure ’ s existing situation, while applies their financial data from 2001 to 2004 to analyze the determinants of debt maturity structure. in order to analyze the impact of trade and economic developing level, the paper employs 1164 non - finance companies ’ finance data of 2003 and the data of china statistical yearbook ( 2004 ). the paper also uses one - way anova and stepwise regression to help the empirical evidence

    其中，分析中國滬深a股市場中上市公司債務期限結構現狀時，選取了656家樣本公司在1998 - 2004年這七年間的財務數據;在綜合分析公司成長機會、公司規模、資產期限、公司質量、實際稅率和非債務稅盾等因素對中國a股市場中上市公司債務期限結構的決定性時，僅選取了上述樣本公司在2001 - 2004年這四年間的相關數據;分析行業特徵和經濟發展水平對我國債務期限結構的影響時，採用了2003年滬、深a股市場中1164家分佈於12個行業門類的非金融上市公司為研究對象，同時，還運用了《中國統計年鑒2004 》中相關數據。
  8. In this paper, based on the soil water infiltration multifactorial influence tests with three species of soil texture and different husbandry condition and monofactorial influence tests with four species of soil texture in indoor, the basic infiltration characteristics, reduction infiltration mechanism and various factors are studied systematically. major factors influencing soil infiltration characteristics, resilience between influence factors and soil water infiltration parameter and influence priority are analyzed by mathematics statistics method, stepwise regression models with multiple units of soil water infiltration parameters are build up and verified

    本文基於大田三種質地、不同耕作條件下土壤水分入滲的多因素影響試驗和室內四種質地土壤條件下的單因素影響試驗，系統地研究了土壤水分入滲特性的變化過程，阻滲機理和影響土壤水分入滲特性的各種因素，藉助數理統計方法分析影響土壤水分入滲特性的主要因素，各影響因素與土壤水分入滲參數間的相關性及其影響的先後次序。建立、驗證了土壤水分入滲參數的多元逐步回歸模型。
  9. ( 6 ) the reservoir operation function is established utilizing the optimal dispatching results. the state variable and decision variable of the operation function is discussed, and the stepwise regression method is used to derive the operation function. because of the nonlinear features of the function have n ' t been reflected in traditional regression methods, the back - propagation neural network model is introduced to establish the operation function

    （ 6 ）利用水庫優化調度結果建立水庫調度函數，在分析水庫調度函數各特徵量的基礎上，介紹了用逐步回歸方法建立水庫調度函數的具體過程，考慮到傳統回歸方法未能反映調度函數的非線性特性，引入bp神經網路模型求解模型，建立水庫調度函數。
  10. Some preceding rain factors were list, then stepwise regression algorithm was employed to select the obvious factors from the list as the input of the bp networks. and the trial - and - error method is employed to define the number of the hidden layer nodes

    論文列出若干個前期降雨量因子，利用逐步回歸演算法從中挑選出影響因素大的作為網路的輸入，通過「試錯法」確定隱節點數。
  11. The spectrum used for modal set is transmitted to pc by rs232. to get the relation between the spectrum and nutrition component ' s concentration, we set up the modal used method of stepwise regression in pc, transmit the coefficient of modal to apparatus, then we can predict the nutrition component ' s concentration of the wheat sample

    通過rs232串口，將建模樣品的光譜上傳到pc機。在pc機上採用逐步回歸建模，得到營養成分濃度與光譜的關系，將模型的系數傳同儀器，即可預測未知樣品營養成分的濃度。
  12. In the second chapter some problems for degree reduction of bezier curves and surfaces are studied. in this chapter, degree reduction of bezier curves with points constraints is proposed and the new approach of constrained optimization is brought in light. the stepwise method for degree reduction of rectangular bezier surfaces is further discussed

    第二章研究b zier曲線曲面的降階逼近問題，在這一章中，提出了b zier曲線的點約束降階逼近新問題，並給出了約束優化方法；討論了張量積b zier曲面的逐步降階逼近新方法，此方法的優點是直接利用b zier曲線的降階逼近方法解決張量積b zier曲面的降階逼近問題。
  13. Based on analyses for the reason of the inaccuracy and the controlled status of the radiation - measurement equipment, this paper points out that the calibration of the radiation - measurement equipment has to be performed periodically during verification intervals, which is determined by the status of the equipment and stepwise weighting method

    摘要通過對檢定間隔期內輻射計量器具量值超差失準原因及受控狀態統計分析，提出檢定間隔期中應按計量器具穩定性情況和分級加權法確定的動態檢定周期實施計量器具動態檢定校準，以保證計量器具狀態受控，確保醫療質量。
  14. In this paper, the design of flexure hinge is studied by advanced computer aided engineering software ( cad / cae ), and the mathematical model of flexure hinge is conducted by orthogonal experimental scheme and stepwise regression method

    本文通過先進的計算機輔助工程軟體（ cad cae ）探討了柔性鉸鏈參數的設計，從統計學原理運用正交試驗表和回歸理論導出了柔性鉸鏈設計參數的數學模型。
  15. Beginning with the problem of interlaced region between farming and herding, the boundary line of the interlaced region is calculated based on grid with 10km grid ; then the relation among land use of the region, soil erosion and erosion region is analyzed ; based on factor classification, no useful factors were neglected and stepwise regression method was used to analysis the drive of land use change ; fractal method was applied to analysis the degradation of land - use and relation among land use, soil erosion and wind - water erosion zone ; environmental variances are introduced to establish characteristic index of land use change and analysis the effect of land use change on soil erosion

    從農牧交錯帶的實質問題入手，基於10公里網格，計算農牧交錯帶的界限；在此基礎上分析農牧交錯帶的土地利用、土壤侵蝕及與風水侵蝕帶的關系；在因子分層的基礎上，剔除不需要因素，採用逐步回歸的方法，進行土地利用變化驅動力分析；運用分形方法分析土地利用的退化，並分析土地利用與土壤侵蝕的關系，引入環境變量，建立土地利用變化特徵指數，分析土地利用變化對土壤侵蝕的影響。
  16. The main contents are as follows : 1 ) 3 eliminate error criterion method and step wise regression analysis method is used to analyze the errors of observation date. in the stepwise regression analysis, aging, loading and temperature which bulkily affects the dam ' s vertical deformation are selected as the regression factors, then regression equation and curve of each point are worked out

    運用3準則剔除誤差法和逐步回歸分析法對茅坪壩的觀測資料進行誤差分析，在逐步回歸分析中，選用對壩體豎向變形影響較大的時效、施工加載和溫度作為回歸因子，求出各測點的回歸方程和擬合曲線。
  17. Subjects were measured by rimer ' s questionnaires for teachers, life event questionnaires for primary school students and embu etc. stepwise regression method was used to analyse demographic, psychological and social factors which may have effect on childhood behavior disorder. also the multiple logistic regression analysis was used to identify significant risk factors for suicide ideation of children. results : the prevalence rates of children with devient scores on the teacher ' s scales of rutter questionnaires were 16. 3 %

    採用rutter兒童行為問卷（教師問卷） 、父母養育方式評價量表（ embu ） 、小學生生活事件問卷等多種工具綜合測量小學生的社會心理狀況，並用多元逐步回歸分析方法對影響小學生行為問題的社會人口學、心理社會因素進行探討，同時對小學生自殺意念進行研究分析，通過多因素條件logistic回歸模型，篩選出自殺意念的主要危險因素，以期為提高小學生的心理健康水平服務，為素質教育提供科學依據。
  18. All the urban logistics requirements are forecasted by the method of time sequence deduce and muti - factors stepwise linearity regression, including volume of freight, configuration of goods, organize volume of freight, distributable volume of freight and its distributing. according to all the forecast result and other conditions, such as transportation and so on, the layout of beijing distribution parks are made certain, and the scale of each distribution park is calculated in use of space - time consume method. at last, a suitable investment, construction and operation system of beijing distribution park is advised on the reference of developed country experiences

    在對物流節點的概念、功能、作用、分類、層次總結和概括的基礎上，結合物流的發展趨勢和大中城市的實際，分析了規劃物流園區的必要性；提出了城市物流需求預測技術路線后，運用時間序列第推、多元逐步線性回歸等科學方法，對北京的貨運量、貨物結構、組織量和適站量、適站量的方向性等物流需求做了預測；學習借鑒國外物流園區選址的經驗，根據貨物適站量方向性預測、北京市的交通體系等實際情況，確定了北京物流園區布局；把不同方向特徵年貨物適站量合理的分配到相應的物流園區中，運用時空消耗法確定了各個物流園區的規模；在對每個物流園區逐一分析后，借鑒國外的經驗，提出了適合北京的物流園區投資、建設、運營機制。
  19. In the aspect of realization the backward differentiation method was applied for stability and the variable stepwise method is used for the calculation efficiency

    在程序研究方面，採用時間的向後差分解決了程序的穩定性問題；採用時間的變步長技術提高了程序的運行效率。
  20. In the multi - variables linear regression analysis, the 28d cube compressive strength is looked as function and the four factors of experiment is viewed as independent variables. the linear equation between compressive strength and four factors is concluded. the optimum regression equation is deduced by stepwise method

    多元線性回歸分析中，以28d抗壓強度為函數，正交試驗中的四因素作為自變量，得出了抗壓強度與各因素之間的線性表達式，再經過逐步回歸法確定了最優回歸方程。
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