step filter 中文意思是什麼
step filter
解釋
階梯減光板-
In designing analogic circuit, we adopt programmable filter max262 to meet the system ' s command. after the step, we can make the signal ' s frequency width is wider and noise level is lower. to make the signal ' s amplitude to meet the analogic to digital device ' s command, we adopt the max551 to finish the gain control
在模擬電路部分，採用可編程濾波器max262 ，這樣就滿足了該數據採集裝置所採集的信號的頻率范圍較寬以及具有較低的噪聲水平的要求，為了使采樣到的信號的幅度滿足後面a d轉換器的要求，採用max551對采樣到的信號進行調理（增益控制） 。 -
The knowledge source which have relative stable form and glossary is analyzed, and the data mining step for this kind of knowledge is designed, viz. filter by key word - intercept - field specialist confirm. the standard glossary table and the " value " of each words is established, which enhance the expert system ability to knowledge acquisition and light the rough task of knowledge banks maintenance
分析了具有相對固定格式和術語的知識源，設計了適用於這類知識源的電子文本知識挖掘的步驟，即：關鍵詞過濾?截詞?專家確認；形成了專業用語的標準化表和標準詞賦值表，增強了系統的知識獲取能力，減輕了專家系統的知識系統維護。 -
At the part of empirical study, this paper chooses 124 a - stock listed companies from stock exchange of shanghai and shenzhen as research samples, makes use of the step method to filter the 13 possible variables ( including 3 debt - paying ability indexes, 3 operating ability indexes, 4 profitability indexes and 3 cash flow indexes ) in analysis and finally sets up discrimimant models by fisher discrimimant rules with the samples " financial data. then this paper validates the stability of these models using the self - validation and cross - validation before analyzing the prediction ability of these models with outside - validation
實證研究部分主要以我國深、滬兩市124家上市公司為研究樣本，採用上市公司1998年至2001年的實際財務數據，運用逐步判別分析方法對擬進入模型的13個變量（包括3個償債能力指標、 3個經營能力指標、 4個獲利能力指標及3個現金流量指標）進行篩選，並根據fisher判別準則建立判別模型，在運用自身驗證法與互動式驗證法對模型的穩定性加以驗證后，運用外部數據驗證法對模型的預測能力進行了分析。 -
By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper
課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。 -
In this system two oscillator are used for mixing. pll for high local oscillator and dds + pll for low local oscillator. by making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution, high frequency accuracy, very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step
系統採用兩次混頻，其中高本振的設計採用pll鎖相環頻率合成來實現，充分發揮了鎖相環頻率合成器的優良特性，實現了系統所要求的高質量寬頻帶本振源；低本振採用pll + dds頻率合成來實現，結合pll優良的鎖相特性與dds的高頻率解析度、高頻率精確度等優點，實現了頻率的小步進高精度合成。 -
According to the frndamental and the steps of this method, we cans use the linear regress filter method to make the simulation of the wind load and then we can educe the curve of the time - process wind velocity. after that step, we can get the chart of the dynamic wind load which we can deliver the crosswind into the particle wind load and put them on the corresponding cell nodes. then we can do the analysis of the dynamical wind load through the time - process analysis to get the max value of the displacement
根據線性回歸濾波器法的基本原理和步驟，藉助相關軟體進行風荷載的人工模擬並得出風速時程曲線，進而轉化為風動力譜，由此將橫風向風力表達成節點風荷載作用於相應的單元節點上，按時程分析法對該空間桁架體系進行風荷載的動力分析，求出結構在進行風動力荷載分析時，結構相應節點對應的最值位移值。 -
It has been deduced that the search direction remains the same but that the step length decreases in optimizing the improved cost function with the conjugate gradient algorithm from the gradient of the cost function that the fir filter apporaches the contrary point spread function ( psf ) more, and that the estimated image is closer to the original one
從代價函數的梯度入手推導出共軛梯度演算法，其搜索方向保持不變而搜索步長變小，使濾波系數更加退近於點擴展函數逆運算元，從而使估計圖像與原始圖像更加接近。 -
According to those practical problems mentioned above, this subject mainly deals with problems as follow : 1 ) carrying out lots of theoretical experiments and systematizing some theory knowledge of the detecting system. 2 ) studying the correlativity between the referring signal and the primary signal of the adaptive filter. 3 ) studying the effects of constraining the self - dithering interference based on fixed step - size ( fss ) and variable step - size ( vss ) lms algorithms. 4 ) designing the subsystem including hardware and software, developing the software and optimizing the adaptive algorithms for constraining the self - dithering interference of the non - contact life - parameter detection system
本課題根據實際中出現的上述問題，主要從事了以下工作： 1 、非接觸生命參數檢測系統的原理性實驗、野外實驗及部分理論知識的整理； 2 、自適應處理參考信號與原始信號相關性的研究； 3 、基於固定步長和可變步長兩類lms自適應演算法抑制非接觸生命參數檢測系統自抖動干擾效果的研究； 4 、非接觸生命參數檢測系統自抖動于擾抑制系統設計、軟體研製和演算法的優化。 -
Adopting step - motor drive, upper / lower & back exhausting filter structure ; auto - proportioned flux supply ; special wind way design for good protection of the muzzle and avoiding flux flying to preheating zone, reducing any chance of unsafe troubles
採用步進馬達驅動，上下及后側抽風過濾方式，助焊劑自動供給，特殊風道設計，有效保護噴嘴，防止助焊劑逃逸至預熱區，減少安全隱患。 -
Based on this observation, we develop a newton - filter method in such a way that at each step, the method generates a point such that either the objective function value or its gradient descreases sufficiently
此時，常用的線性搜索（如armijo搜索和wolfe搜索等）可能失敗。另一方面，不管目標函數的hessian陣是否正定， newton方向一定是目標函數的梯度的模函數的下降方向。 -
Theoretical source of transparent model " s advantages is discussed, and then solutions of its key technology, last a programming realization - setting network card promsic to receive packets, keeping mac address, and checking packets base mac frame to realize transparent model in ip protocol rebuilding. the key technologies of firewall are packet filter and application proxy both of which can " t keep in step with network attack development
鑒於此，本文從透明模式防火墻的特徵和功能出發，探討了其本質、技術實現要點及可行性方案，給出有別于上述兩方案的實現：網卡置於混雜模式，保留mac地址， ip重組、檢查、轉發過程一氣呵成，將透明模式的實現融合在ip重建中，使得整個防火墻體系結構更加緊湊，提高了效率。 -
Filter unsupported properties methods events. feature includes filtered intellisense, a build verification step, and ability to convert unsupported controls
功能包括篩選的intellisense 、生成驗證步驟，以及轉換不受支持的控制項的能力。 -
According to the space vector modulation method of the equivalent structure of the ac - dc - ac transformation, the transformation relations of the matrix converter are deeply investigated. the ac - ac direct conversion control and the double - space - vector pwm scheme of the matrix converter are deduced, the four - step current commutation strategy of matrix converter is expatiated, the design method of input filter and over voltage protection circuit is analyzed, and the modeling and simulation of a three - phase matrix converter are implemented
從等效交-直-交變換的空間矢量調制方法出發，深入分析了矩陣式變頻器的變換關系，導出了交-交直接變換控制規律和雙空間矢量脈寬調制技術，闡述了矩陣式變頻器的換流控制策略，分析了輸入濾波器和過電壓保護電路的設計方法，實現了矩陣式變頻器的建模和運行分析。 -
Geometric distortion is traditionally corrected by an image resampling operation which is applied as a post - processing step to pfa. the scene size limits of pfa presented by range curvature qpe, can be alleviated by using an efficient image domain space - vairant post - filter
通常採用圖像域插值的方法校正幾何失真，而利用空變濾波器使散焦的點重新聚焦，這些校正方法可以減輕距離彎曲對成像范圍的限制。 -
Secondly, according to a case of kirsch - filter, the method of reducing computing step of linear filter is introduced and discussed
然後，討論了如何降低模板運算元的計算步，以kirsch運算元為例給出了減少模板運算元的計算步驟的方法。 -
Demands for spatial index directly come from spatial methods. in spatial database, spatial methods are implemented in two steps : first is filter step, in which spatial object ' s number is reduced through spatial index. second is refinement step, in which spatial objects resulted from filter step are subjected to exacted computation
空間索引的直接需求來自於大量空間對象上的空間運算，本文認為在空間數據庫中空間運算應該分兩步進行：第一步是篩選步驟，通過空間索引縮小進行比較的空間對象的個數；第二步為細化步驟，對從第一步中篩選出的空間對象進行精確的空間運算操作。 -
At first, the fundamental theories and realization methods of main parts of high purity frequency source in x band object simulator of vehicle - carried phased - array radar, such as phase - locked - loop, step recovery frequency multiplier, dielectric band - pass filter and micro strip band - pass filter are introduced in detail in this paper
本文一開始洲門針對機載相控陣雷達目標模擬器中的高純本振源的實現，詳細地介紹了瑣相環、階躍管倍頻器、介質帶通濾波器和微波帶通濾波器的基本原理及其實現方法。 -
The business of aggregate requires that aggregator could aggregate many business objects concurrently and different business object ' s properties and temporal variables could be data sources. the aggregate process may be a simple statistical calculate process with filter conditions or a complex calculate process. it requires that the aggregator could control the process of aggregate which implements it step by step and the following steps are relative with the results of previous steps
匯集的業務需求為：針對動態確定的kpi指標實際值，能夠以各種業務對象的屬性、中間變量數據為數據源進行匯集，並且是能對多個業務對象同時進行：匯集變換可能是具有篩選條件的簡單統計計算或復雜計算；匯集變換要求能夠對匯集過程進行控制，即匯集是分步實現的，並且后續步驟的進行與已完成步驟的結果相關。 -
In order to meet the demand for smaller capacity and high rejection in upper - sidebands, the sir ( step impedance resonator ) structure has been used as the construction of the resonator in the filter
濾波器採用sir （ stepimpedanceresonator ）結構，實現了濾波器的小型化、較好的帶外抑制和高選擇性。 -
First, calculating time delay and embedding dimension to reconstruct phase space. second, based on chaos theories, the artificial neural network is used to build one - step and multi - steps predictive model. third, combining with an adaptive filter, predictive error is processed so that weak signal is extracted from strong chaotic noise
研究的內容分為三個方面: （ 1 ）確定嵌入維數和延遲時間重構相空間; （ 2 ）將混沌理論與人工神經網路結合，建立混沌時間序列（混沌背景）的一步與多步預測模型; （ 3 ）結合自適應信號分離器對預測誤差進行處理達到檢測微弱信號的目的。
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