序數選擇法 的英文怎麼說
中文拼音 [xùshǔxuǎnzháifǎ]
序數選擇法
英文
ordinal selection-
In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學模型后，運用多體動力學中的動力學分析方法研究各個桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義Assembly plan should cover : calculation on amount of members and joints, assembling equipments ' choosing, assembly flow sequence, assembly method, progression plan, personnel management, steel members mobilization, quality standards, safety measures and special construction techniques
編制的組織設計的內容應包括：計算構件和連接件的數量，選擇吊裝機械、確定流水程序、確定吊裝方法、制定進度計劃、確定勞動組織、規劃鋼構件進場、確定質量標準、安全措施和特殊施工技術等。In this paper, we use nonparametric regression method in chinese financial time series, we also use both kernel regression after improving cross - validation function and local polynomial estimation of regression under mixing condition to study and analyze the volatility in chinese stock market
在本文中，我們把非參數回歸的方法運用到我國實際的金融時間序列數據之中，討論了我國股價指數收益率序列的易變性。而在用非參數回歸進行估計時，選擇合適的窗寬有著重要的意義。Utilising dissolved gases analysis, a new insulation fault diagnosis method for power transformers is proposed. this method is based on the group grey relational grade analysis method. first, according to the fault type and grey reference sequence structure, some typical fault samples are divided into several sets of grey reference sequences. these sets are structured as one grey reference sequence group. secondly, according to a new calculation method of the grey relational coefficient, the individual relational coefficient and grade are computed. then according to the given calculation method for the group grey relation grade, the group grey relational grade is computed and the group grey relational grade matrix is structured. finally, according to the relational sequence, the insulation fault is identified for power transformers. the results of a large quantity of instant analyses show that the proposed method has higher diagnosis accuracy and reliability than the three - ratio method and the traditional grey relational method. it has good classified diagnosis ability and reliability
基於變壓器油中溶解氣體分析，提出了一種基於群灰色關聯度分析的變壓器絕緣故障診斷新方法.首先根據故障類型與灰色參考序列構造，選擇變壓器典型故障樣本構造多組參考序列，這些參考序列組構成一個灰色參考序列群.其次根據給出的新的關聯系數計算方法，計算個體關聯系數和關聯度.然後根據給出的群灰色關聯度計算方法，計算群灰色關聯度和構造群灰色關聯度矩陣.最後根據關聯序識別變壓器絕緣故障診斷.通過大量變壓器絕緣故障診斷實例分析，所提方法診斷準確性與可靠性優於三比值法和傳統的灰色關聯分析方法，具有較好的分類診斷能力和可靠性Abstract : explosive energy is evaluated by way of fuzzy mathematics. sequence is lined up according to explosive energy and the method of selection of weighted coefficien t is discussed
文摘:提出了用模糊數學評價炸藥能量的方法，對幾種炸藥能量高低進行了排序，並對加權系數的選擇方法進行了討論。Then based on the analysis of the constructions of wh, go and ls sequences, the corresponding correlation properties are derived and methods of selecting subsets with good periodic mean - square cross - correlation property or aperiodic mean - square correlation property from the wh set and go sequence set whose go zone z = l are investigated. furthermore, the methods of truncating the go sequences to obtain the quasi - orthogonal ( qo ) set whose family size m is larger than the length l and the quasi - generalized - orthogonal ( qgo ) set whose size m is larger than li2z are discussed, together with the numerical results of the correlation properties
基於這些結果，探討了如何從wh序列集和廣義正交區z = 1的go序列集中，分別按照周期互相關均方特性最優和非周期相關均方特性最優的準則選擇性能較好的序列子集；同時討論了將廣義正交序列截短來獲得準正交（ qo ）序列集和廣義準正交序列集（ gqo ）的方法，並給出了這一類序列相關特性的數值計算結果。The theory of the consumer can be presented using either an indifference curve approach, which uses the ordinal properties of utility ( that is, which allows for the ranking of alternatives ), or a utility function approach
消費者理論可以被用無差異曲線來表示，就是利用有序的資本效用（也就是，哪個考慮到了選擇的順序） ，或是用效用函數方法表示。For the job - shop problem, the operator selecting and algorithm realization based on working procedure coding and based on job coding is investigated in the paper. some key algorithm such as fitness evaluation function is given in detail. genetic algorithm is employed to search for the optimized parameters of pid controller applied to ship controling
對于作業車間調度問題，本文分別探討了基於工序編碼和基於工件編碼的調度問題的運算元選擇和演算法實現，對于關鍵演算法如適應度評價函數的實現進行了詳細的討論，並給出了具體的實現步驟。The external interface and internal structure of telecontrol protocol program is designed, three optional route of total program design are analyzed. the tactic of effective dividing of the program function is discussed, the effective way to divide the program function is presented in term of transparency. application, transport and data link layers of master station is designed and realized with vc + +
設計了遠動規約程序的外部介面和內部結構，並分析了程序總體設計中的三種可供選擇的技術路線；討論了程序功能有效分工的策略，提出了以透明性進行有效分工的方法；設計了主站應用層、傳輸層和數據鏈路層，並用vc + +加以實現，成功地應用於工程實踐中，收到良好效果，達到了預期目標。With this understanding, this paper chooses the longitudinal strength of hull girder as the disabled mode, by the calculation of fpso, predicts the ultimate strength and effective lifetime of the hull. expected results of examples are obtained, which provide the analysis data for the further risk assessment
在此前提下，本文選擇了船體梁縱向強度失效模式，通過fpso實船計算，分析消化了理想單元法程序軟體，預報了船舶極限強度和安全有效壽命期，並用一階二次矩方法對完整受損船體的結構安全性進行了可靠性的評估，取得了預想的結果，為進一步實施綜合安全評估提供了分析數據。The claimed train approval dss take advantage of the advanced es and dss techology. the practical system uses delphi6. 0 software platform of borland corp. and adopts the object oriented designing and programming to insure the advantage of the the design of the system. the whole database of the system is designed on the platform of the sql server2000, can connect oracle or sybase database etc. by using odbc, can achieve the data exchange and information use in common of the tmis and fmos, and can insure that the system is easy to develop and extend
鐵路請求車審批輔助決策系統採用先進的專家系統（ es ）和dss技術，研製開發的實際應用系統，選擇了最新的borland公司的delphi6 . 0軟體開發平臺，採用了面向對象的程序開發方法，確保了系統的先進性。系統綜合數據庫的設計是在sqlserver2000平臺上完成的，可通過odbc介面與oracle或sybase等大型數據庫連接，實現與外部相關的tmis （鐵路管理信息系統）及fmos （貨運營銷及生產管理系統）系統的直接數據交換與信息共享，保證了系統具有較好的開發性和信息可擴展性特點。Many mature technologies on this level have been brought out, such as the relational algebra law, the improved logical query plan, the cost estimation of operation, the selective plan based on cost and order of joint, etc. although many methods have been tried out, no remarkable result or noteworthy technology has come to reality because of complexity of data decomposition and network effects
例如，從物理查詢計劃的底層磁盤輸入輸出到語法分析階段的語法分析樹、用於改進查詢計劃的代數定律、邏輯查詢計劃的改進，以及操作代價的估計、基於代價的計劃和連接順序的選擇等全過程，都進行了不懈的努力。在這方面的研究已經非常成熟。According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system
針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。In chapter 2, an economic concept - location quotients ( lq ) is introduced into the mathematical part of this article, in order to isolate what a city does well, and to find which of its industries export to the rest of the nation. author manipulates last five years " lq from data on farming, forestry, animal husbandry, coal, rude oil, tourism, export and import, population and etc, argues that we could know weather there is a larger than normal concentration of activity in the region, and weather there is a trend of regular develop trace of this activity by running a time series simple autoregression, which provides a feasible analysis tool for people to judge and choose an advantageous industry within this region
第二章，採用區位商的方式和賦予的經濟意義，通過計算，比較了過去5年中甘肅、寧夏兩省區在農業、林業、畜牧業、漁業、煤炭、原油、旅遊、進出口、人口等與資源產業密切相關的行業的區位商，並提出通過對所獲得的區位商數據建立有序的單變量時間序列回歸模型，可以獲知某項資源產業是否在該省具有明顯的優勢的計量方法，為判斷並選擇區域性的優勢產業提供了一種可行的分析工具。This thesis chooses b spline wavelet that adapts to the analysis of power system signal, and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current. a transformer microcomputer protection was designed in this thesis, and in the base of intermission angle principle, a new criterion was established, which pierces through the traditional method with accurate measurement of intermission angle, but analyses the wave by wavelet transform. this criterion is lower in hardware, so it will be realized in the existing hardware
本文選擇適合電力系統信號分析的b樣條函數作為母小波，對勵磁涌流和內部故障電流進行小波分析，並設計微機型變壓器保護基本配置，在以往間斷角原理鑒別勵磁涌流的基礎上，突破傳統精確測量勵磁涌流間斷角的方法，直接對信號小波變換后的波形進行分析，建立一個新的鑒別勵磁涌流判據，該判據對硬體要求不高，可以在現有一般硬體平臺上實現；並編寫以b樣條函數為母小波的小波變換判據演算法程序。Adopting the actual county - grade database of land use firstly founded in china, combining with the comprehensive influential factors of land use change, using the correlative statistic software and the mathematic analytical methods ( principal component analysis, gray relating analysis, multivariate time series markov chain analysis, multivariate regression analysis, gm ( 1, 1 ) gray model, gray series gm ( 1, n ) model methods etc ), this paper analyses the dynamic change of land use and driving force in jiang ' an county qualitatively and quantitatively. the results indicate : 1 the land resource per capita and the area of single - land - use type in jiang ' an county are not prior to other places in yibing city or sichuan province. however, the terrain is dominant in choosing the way of land use
本文採用全國首批建立的「縣級土地利用現狀數據庫」的基礎數據，結合影響土地利用變化的經濟、社會、環境等綜合因素，採用相關分析軟體（ dps 、 spss ）和數學分析方法（主成分分析、灰色關聯度分析、多元回歸分析、多元時空序列馬爾柯夫鏈分析、 gm （ 1 ， 1 ）預測模型分析、灰色序列gm （ 1 ， n ）模型分析等方法） ，對江安縣土地利用變化及其驅動力進行定性、定量研究，研究結果表明： 1江安縣人均總的土地資源數量和單一土地利用類型的數量在宜賓或四川省區域內均無優勢；地形對土地利用方式的選擇起著主導作用；土地利用變化的總趨勢是：耕地、林地、交通用地和水域面積不斷減少，居民點及工礦用地和未利用地面積不斷增加；景觀多樣性指數呈現「 」趨勢。In order to improve the efficiency, we use the sampling points of the sequences to compute the distance of two sequences. the distance of sampling points is used to filter the sequence of the database, so the similarity searching space is reduced and the efficiency of the query is improved
在保持序列變化模式的前提下，使用抽樣點來計算序列之間的dtw距離，並依據抽樣比率和查詢參數選擇過濾距離對序列數據庫進行過濾，實驗結果表明，抽樣過濾的方法明顯提高了查詢效率。The performance of existing blind source separation methods is highly affected by the non - linear contrast functions that are selected according to the distribution of original signals, and the separation results are not always ideal, especially for the mixture of super - gaussian signal and sub - gaussian signal
摘要針對現有盲源分離演算法的性能依賴于對比函數選擇的現象，提出了一種基於遺傳演算法的盲源分離演算法，該演算法直接從信號的樣本序列中估計出信號的概率分佈，解決了信號間互信息的求解問題。The hole designed this way can make some objectives optimum while the classic methods could not. this thesis firstly introduced the optimization methods based on dynamic programming presented the objective function to be optimized according to its rolling technological features, selected appropriate optimization methods to make optimization, and realized with computer programs
本文首先對基於動態規劃的優化設計方法進行了介紹，並以一個實際的孔型系統為例，根據其軋制工藝的特點提出所需優化的目標函數，選擇適當的優化方法進行優化，並用計算機程序予以實現。分享友人