零方差問題 的英文怎麼說

中文拼音 [língfāngchāwèntí]
零方差問題 英文
zero variance problem
  • 零 : Ⅰ數詞1 （零數） zero2 （數的空位） zero sign （0）; nought 3 （表示沒有數量;無） nil; nought 4 （...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 問 : Ⅰ動詞1 （請人解答） ask; inquire 2 （詢問; 慰問） question; ask about [after]; inquire about [aft...
  • 題 : Ⅰ名詞1. （題目） subject; title; topic; problem 2. （姓氏） a surname Ⅱ動詞（寫上） inscribe; write
  • 方差 : dispersion
  • 問題 : 1 （需回答的題目） question; problem 2 （需研究解決的矛盾等） problem; matter 3 （事故或意外） tr...
  1. Aspect the evaluation in the now available expressway construction project management is chiefly concentrated at economy with the technology, and to manages the twist hempen thread imitates that the research which appraised chiefly includes in effect which inspected and control evaluation and the construction course the evaluation of some one quotas, the unified evaluation system of not formation ; the twist hempen thread effect assessment method is managed to the now available project item, and stopping certain tier face in the item construction mostly, assessment method adaptability is wrong, and lacks the synthetical evaluation to the scattered assessment method of selection submitted a tender such as beckoning and so on

    現有高速公路建設項目管理中的評價主要集中在經濟和技術方面，而對管理績效評價的研究主要包括監理的效果評價和施工過程中的一些單指標的評價，沒有形成統一的評價體系;現有的工程項目管理績效評價方法，諸如招投標的選擇之類的零散評價方法，大多停留在項目施工的某一層面，評價方法適應性差，缺少綜合評價。本文通過對現有高速公路建設項目管理評價體系存在問題的分析，結合高速公路建設項目管理的特點，構建了高速公路建設項目管理績效評價內容、指標體系，運用模糊評價法、專家評價法、熵評價法等對高速公路建設工程項目管理績效做出了綜合評價。
  2. This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance

    本文研究了目前輸電線路參數測量的各種方法，分析了其中存在的不足和缺點，提出了基於gps的輸電線路參數在線測量方法，研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差，在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法，較好地解決了輸電線路參數測量中存在的一些問題，尤其是多回互感線路零序參數測量困難的問題。
  3. As the new generation product replacing j53 - 1600a model, it adopts accessories of j53 - 1600a excepting some accessory such as machine frame. in addition to its standard parts are mostly universal and wearing parts are completely universal, its platform, brake and balance cylinder are improved and designed to be more convenient for maintaining. j53 - 1600c model machine frame guide rail adopts wear - proof paneling, radically solving the problem that j53 - 1600a model press owns poor abrasion resistance and has bad effect on kinematic accuracy during application owing to no paneling on its integrated body

    J53 - 1600c型是在j53 - 1600a型基礎上的改進型，是j53 - 1600a型換代產品，除機架等個別零件外，其它件採用了j53 - 1600a型的零件，而且標準件基本完全通用易損件完全通用，另外平臺制動平衡缸改進設計使設備維護更為方便， j53 - 1600c型機架導軌採用耐磨鑲板從根本上解決了j53 - 1600a整體機身無鑲板耐磨性差，使用后影響運動精度的問題。
  4. And the solutions of the three problems above are discussed : the solution to the simulcast interfering which is caused by the simulcast delay spread ( sds ) and the zero - beating is given in chapter four. based on the well understanding of the principle of ms - i / h / 0 in ipnp, the examples are given in chapter five on how to solve the problem of communication interruption between paging zones. through the analyse of signal switching between chengdu and deyang, the synchronization error between flex frames, and the bug in the multi - frequency roaming principle are pointed out

    通過以上分析，文章探討了對上述三個問題的解決： ?對同播干擾問題，分別分析了時延差和零拍頻所造成同播干擾的客觀存在，探討了系統設計和網路優化的基本方法； ?對ipnp聯網障礙，提出了在掌握ipnp對各pncc作為輸入局歸屬局?輸出局（ ms ? i h o ）的靈活定義、以及相關參數配置原理的基礎上，分析聯網障礙的思路； ?對信號切換障礙，以成都和德陽兩地的局部廣域覆蓋為例，分析了flex幀失步和flex多頻漫遊原理設計缺陷的客觀存在，並探討了相關的解決方法和建議。
  5. Specifically, according to the w - w five parameters failure theory, the fracture criterion of crack is established, and the state of crack ( open or close ) is judged by the values of the crack strain. combining the two points, the predict - model about the failure of concrete material is established. this predict - model can predict 16 failure forms, and basing the different failure form predicted after crack, the stress - strain relationship matrix of concrete material is adjusted

    具體來講，根據w - w的五參數混凝土破壞理論，建立混凝土的開裂準則，根據開裂應變值來判斷裂縫是張開還是閉合，從而在兩者基礎上建立了裂縫的開裂預測模式，總共有16種開裂模式；裂后根據具體的開裂模式及殘余抗剪能力來調整混凝土的本構關系矩陣，即用等效剛度代替原有剛度，考慮到垂直於裂縫方向的剛度為零，這樣會使裂后的總剛出現病態，為此文中通過引用鬆弛系數來對出現裂縫的單元進行預處理，一方面可解決因過大的舍入誤差導致計算結果的不可信問題，另一方面就是可加速收斂。
  6. A nonlinear visual mapping model of the 2d eye - in - hand robotic visual tracking problem is proposed and a new visual tracking controller based on artificial neural network with bp - ga mixed algorithms is designed. simulation results show that this method can drive the static tracking error to zero quickly. moreover, a new nonlinear visual mapping model of the 3dof eye - in - hand robotic visual tracking problem is studied and a new visual tracking

    （ 5 ）針對基於圖像雅可比矩陣的機器人手眼平動視覺跟蹤問題，建立了新的視覺映射模型，提出了基於bp一ga混合學習演算法的人一神經網路機器人平動視覺跟蹤方法，模擬結果表明該方法控制下系統跟蹤誤差快速趨近於零。
  7. Based on the specilized production of interim products, this paper mainly focuses on the study of two aspects, dealing with the problems such as incompleteness and improperness of costing, inefficient cost controlling, etc. this paper also introduces the delimitation cost calculation method consisting with the characteristics of interim products to facilitate the items of costing ; discusses the demand of financial management development and accounting information quality in the era of knowledge economy ; puts forward a viewpoint that business credits are the excess value in human recourses ; conducts a study on the characteristics of shipyards ’ production organization and management requirements in the view of the features of specialized production of interim products and of the problems in cost calculation concerning ill objectivity, pertinence and poor readability ; and brings out delimitation cost calculation method in terms of batch parts method, thereby enrichs the contents of human resource capital calculation and quality costing of shipbuilding in accordance with the characteristics and requirements of specified interim products production in modern shipbuilding industries, this paper carries out the research of the

    因此，本文基於中間產品專業化生產，針對中國船廠成本核算內容不完整、核算方法不適應，成本控制效果差等問題著重進行了兩方面的研究工作。提出適應中間產品特徵的分層成本計演算法，完善成本核算內容。探討知識經濟時代財務管理發展要求和會計信息質量要求，提出商譽是人力資本超額使用價值的觀點，針對現代造船中間產品專業化生產所具有的特點，以及成本核算中客觀性和相關性差，可讀性不強等問題，研究了船廠生產組織特點和管理要求，提出了延伸于分批零件法的分層成本計演算法，拓展了造船人力資本和質量成本的核算內容。
  8. We have also researched the supervision functions of china ' s government over the medicine retail market through comparing those medicine retail markets in developed countries. the positivist study shows that mere are many drawbacks in china ' s medicine retail market owing to the stagnant circulation of medicine, the disordered macro - control by the government, imperfect laws and rules in supervision, superficial management by the government and the poor performance of different retailers and so on. the reasons are as follows : a

    實證研究表明，由於我國藥品流通體制不順、政府宏觀管理職能失調、藥品監督法律法規不健全、政府監督管理力度不夠及零售藥房經營者素質參差不齊等原因，我國藥品零售市場存在著許多問題，主要表現在：零售藥房的布局不合理；進貨渠道混亂；執業藥師短缺；零售藥房經營管理不善；藥品連鎖經營不規范； otc制定不完善等方面。
  9. Launching automatically, at the conclusion of the initial boot sequence or subsequent boot sequences, or upon connections to or disconnections from the internet, any non - microsoft middleware if a microsoft middleware product that provides similar functionality would otherwise be launched automatically at that time, provided that any such non - microsoft middleware displays on the desktop no user interface or a user interface of similar size and shape to the user interface displayed by the corresponding microsoft middleware product

    在雙方的汽車零部件貿易中，美國則有128億美元的逆差。 1993年7月，日本雖然同意談判解決汽車市場的開放問題，但實際上卻拒絕與美國進入談判程序。因此美國採用這樣的措施，要求日本向世界汽車商開放市場，而且要求日本市場應該具有相應的透明度和競爭性。
  10. " misalignment error ", which is caused by misalignment during null test adjustment, together with fabrication errors is shown in test results, and it is important to separate these two errors so that the test results can be used in ccos process. asic software is developed for eliminating nonlinear error and separating misalignment error, and a high accuracy, suitable format data file is generated by asic for further analysis for ccos process

    在非球面測量技術方面，主要針對零位補償檢驗過程中測量坐標的「非線性誤差」的形成原因及其補償演算法由光學調整量引起的測量誤差以及調整量誤差的擬和方法等問題進行了討論，並編制了相應的干涉檢驗數據處理軟體asic ，干涉檢驗結果經分析、處理后能夠滿足ccos的技術要求並指導加工。
  11. Measurement and characterization of surface texture is an important aspect of precision metrology. historically this has involved partitioning a profile into different wavelength regimes referred to as roughness, waviness and form followed by numerical quantization. parameters computed are then inspected for tolerance compliance to ensure a part performs its intended function. this approach is satisfactory when the specification has been carefully determined and the process is stable. however, when the manufacturing process is under development or when instability or modifications to the process invalidate specifications, there is a need to study surface finish parameters in relation to functional performance or process measures. in this context, the problem of surface texture classification and recognition are discussed. advanced techniques developed for this purpose along with applications are presented. also, the techniques discussed here will be useful across large bandwidth, from the characterization of nano scale to traditional micro scale surfaces

    表面結構的測量與特徵描述是精密計量技術的一個重要方面，傳統上包括將輪廓情況根據不同的波長范圍劃分為粗糙度、波紋度和形狀及后續的數字量化.按算得的參數檢查它是否為公差允許，以保證零件執行其指定的功能.當技術特性已經經過仔細確定，並且其過程穩定時，該方法是令人滿意的;但是，當製造過程正在進行中或過程的不穩定、過程變化使技術特性失效時，就需要研究和功能表現及過程評定相關的表面參數.討論了表面結構的分類與識別問題.同時闡述了為此目的而開發的先進技術及其應用.所研究的技術對從納米尺度到傳統的微米尺度的較大帶寬范圍內的表面特徵描述都是有效的
  12. The initialization method to achieve different equalizer delay local minimum is proposed for btea and se. comparison study using several uwac with different zero locations is made to demonstrate the equivalent of different initialization method for least mean square ( lms ) algorithm, btea, se and cma

    盡管常數模盲均衡演算法的初始化仍然是一個公認的未能解決的問題，但本文通過幾條不同零點位置的水聲通道，對比研究了自適應最小均方誤差演算法、倒三譜演算法、超指數演算法和常數模演算法的不同權向量初始化的等效性。
  13. This feature reflects the physical phenomenon of breaking of waves and development of shock waves. in the fields of fulid dynamics, ( 0. 2. 1 ) is an approximation of small visvosity phenomenon. if viscosity ( or the diffusion term, two derivatives ) are added to ( 0. 2. 1 ), it can be researched in the classical way which say that the solutions become very smooth immediately even for coarse inital data because of the diffusion of viscosity. a natural idea ( method of regularity ) is obtained as follows : solutions of the viscous convection - diffusion pr oblem approachs to the solutions of ( 0. 2. 1 ) when the viscosity goes to zeros. another method is numerical method such as difference methods, finite element method, spectrum method or finite volume method etc. numerical solutions which is constructed from the numerical scheme approximate to the solutions of the hyperbolic con - ervation laws ( 0. 2. 1 ) as the discretation parameter goes to zero. the aim of these two methods is to construct approximate solutions and then to conside the stability of approximate so - lutions ( i, e. the upper bound of approximate solutions in the suitable norms, especally for that independent of the approximate parameters ). using the compactness framework ( such as bv compactness, l1 compactness and compensated compactness etc ) and the fact that the truncation is small, the approximate function consquence approch to a function which is exactly the solutions of ( 0. 2. 1 ) in some sense of definiton

    當考慮粘性后，即在數學上反映為（ 0 . 1 . 1 ）中多了擴散項（二階導數項） ，即使很粗糙的初始數據，解在瞬間內變的很光滑，這由於流體的粘性擴散引起，這種對流-擴散問題可用古典的微分方程來研究。自然的想法就是當粘性趨于零時，帶粘性的對流-擴散問題的解在某意義下趨于無粘性問題（ 0 . 1 . 1 ）的解，這就是正則化方法。另一辦法從離散（數值）角度上研究僅有對流項的守恆律（ 0 . 1 . 1 ） ，如構造它的差分格式，甚至更一般的有限體積格式，有限元及譜方法等，從這些格式構造近似解（常表現為分片多項式）來逼近原守恆律的解。
  14. The cyclic estimation approaches of chirp signals in additive nose or multiplicative noise are proposed, it presents a way for the parameters estimation of zero mean amplitude chirp signals. the estimation performances in the additive noise or multiplicative noise are analyzed by the first order perturbation analysis method, and the error variance expressions of the parameters estimation under large samples are derived

    針對加性噪聲情況及存在乘性噪聲的情況，提出了線性調頻信號參數的循環平穩估計方法，解決了零均值乘性噪聲的信號參數估計問題，並採用一階擾動分析方法，對兩種噪聲情況下的估計性能進行了分析，推導出了各參數的估計誤差方差公式。
  15. Abstract : this paper introduces the some attention matters in workholding ceramic workpiece, the methed in perventing workholder pressing the ceramic workpiece to break and the calculating and testing holding tolerancea

    文摘:介紹了陶瓷零件機械加工時，對陶瓷工件施加夾緊力應注意的一些問題，防止壓傷、壓裂陶瓷工件應採取的措施及有關夾緊誤差的理論計算及實驗測試方法。
  16. There are kinds of risk factors in the course of the real estate investment, the final result is the departure if the risk events take place and it is the investor ' s concerned matter in deed. in order to embody the investor ' s concerned matter at the risk measurement, the author introduces semi - variation, the probability of net present value less than zero and the risk loss and uses these indices to measure the risk of real estate investment

    房地產投資過程中風險因素眾多，各類風險事件發生所造成的最終結果是投資的實際收益與預期收益發生偏差，而投資者真正關心的也正是收益能否實現的問題，因此，本文將房地產投資風險的度量直接體現在投資者關心的問題上，用半方差、凈現值小於零的概率、風險損失值等指標來量化投資風險。
  17. Then, the author analysed the existed problems and predicament of our traditional general store. then the thesis discussed the features of chain operation of general store and the method for developing traditional general store by analyzing the chain operation system of hunan youa group, including it ' s real situation of operation system, exsited shortcomings and it ' s disparity with those developed retailing chain enterprises

    第三，針對我國傳統百貨經營管理存在的問題和困境，通過對友阿集團百貨連鎖經營運作體系的案例剖析，包括它的運作體系現狀、存在的缺點或與先進零售連鎖企業對比的差距等，論述了百貨商店連鎖經營運作特點以及提升傳統百貨的方法。
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