sampling simple 中文意思是什麼

sampling simple 解釋
簡單抽樣
  • sampling : n. 1. 取樣（品），取標（本）〈指行動或程序〉。2. 樣品，標本。3. 剽竊拼湊歌曲。
  • simple : adj （ pler; plest）1 單純的；簡單的，簡易的；輕便的。2 質仆的，自然的，天真的；樸素的；率直的，...
  1. Third, this dissertation analyzes the complicacy of result size estimation problem for xml structure based query optimization compared to its counterpart in traditionally relational database, and proposes a full - featured result size estimation algorithm for xml query, sxm. for simple path expression query, this dissertation proposes a dynamic synopsis model for xml data based on the concept of f - stable and b - stable, xmap. for complicated path expression query, this dissertation adopts an improved bifocal sampling method for result size estimation

    第三，分析了xml結構化查詢優化中的查詢代價估計問題與傳統關系型數據庫中的查詢代價估計問題的區別，提出了一套完整的xml結構化查詢代價估計體系sxm ，包括對簡單路徑表達進行查詢代價估計的動態xml數據統計模型xmap ，對復雜路徑表達進行查詢代價估計的雙焦點例舉法，以及對值匹配條件進行查詢代價估計的基於小波的多維直方圖方法，並能將多種查詢表達的查詢代價估計結果結合在一起，以給出一個完整的xpath查詢的代價估計。
  2. Static mathematic model of drum accommodation and control is presented, and instruction model control strategy of sample intervals is presented based on differences between characteristic equations of lifting frame and characteristic equations of top and bottom board change among the sampling spots, the rules of this method are few, simple, easy to operate and meet controlling demands

    給出了滾筒調控靜態數學模型，並根據調高機構的調控特徵方程與采樣點間頂底板變化特徵方程的差異，給出了在其采樣區間內的指令式控制策略，其方法的規則條日少、簡單易運算、符合實際控制要求。
  3. Design features like built - in filter slots, combined with optional accessories such as direct - attach cuvette holders, make sampling simple

    像內置過濾槽的設計，與可選擇附件如直接試管固定器的組合，使取樣簡單。
  4. The switched capaci tor filter is the counterpart of the continue time analog filter " s sampling, it is more adapted to the miniaturization of the circuit and can realize the higher accuracy transfer function, especially the design of the cmos integrated sc filter based on the biquad have advantage of high accuracy, small area, low power consumption, simple architecture and easy to debug. it has important academic and practical means of the sc filter " s research and design

    開關電容濾波器是連續時間模擬濾波器的采樣時間等效電路，更適合電路的小型化，同時也實現高精度的傳輸函數，尤其是基於雙二階的cmos開關電容濾波器設計具有高精度、面積小、低功耗和電路結構簡單，易於調試等優點，所以研究和設計開關電容濾波器有著重要的理論和實際意義。
  5. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  6. In this paper, a method assessing harmonic impedance by synchronously layered distortion waves is proposed, which is based on the " fluctuations method " - a simple and effective means. however the method is based on the fourier transform, which can just precisely analyze the signals whose cycle is integer times as broad as that of fundamental wave. with sampling windows widening, the variations of distorted signals in a fundamental period are weakened

    本文是以一種被廣泛採用的非干預式諧波阻抗估計方法? ? 「波動量」法，的基礎上，針對現有方法以直接的fourier變換為分析工具，只能對基波周期的整數倍窗口采樣信號進行分析，畸變信號在一個基波周期內的變化隨采樣窗口增大而被弱化，並且，諧波次數越高，解析度就越低，大大限制了諧波阻抗估計的準確性的提高。
  7. Simple sampling without replacement

    簡單不重復抽樣
  8. Precision of simple random sampling

    簡單隨機抽樣精密度
  9. In the space, wavelet approximation formula and sampling formula are gived and these are simple and easy for calculation. it is a new attempt to establish mra in the reproducing kernel space. this not only makes up existing researchful defects but also gives a better method to resolve numerical approximation problems and it further enriches the reproducing kernel theory and wavelet method. this provides more applied method for resolving numerical approximation problems in the space which is often used in the engineering

    在再生核空間中建立的多尺度分析方法是利用再生核工具探討小波理論的又一次大膽的嘗試，它不但彌補了現有研究的缺憾，而且給出了解決數值逼近問題的一個新思路，進一步豐富了再生核理論，充實了小波方法，這為在工程中常用的空間中解決數值逼近問題又提供了一種較為實用的方法。
  10. The algorithm generates three - dimensional terrain model and displays in real time. it uses an efficient and simple method to attain the dependency between sampling points on terrain, and refines the center points in top - down way. it incorporates the dependency of points into their errors so that the cracks inside the terrain block are avoided, at the same time eliminates the cracks at the edges of blocks through adjusting the elevations of those points that cause the cracks

    該演算法基於規則格網數據實時生成三維地形模型，並實時顯示；採用了一種簡單而高效的方法來求解采樣點之間的依賴關系；以「從頂向下」方式細分中心頂點；並把頂點依賴關系融合進頂點誤差中，避免了地形塊內部的裂縫，同時通過調整塊邊界點的高程消除了塊邊界處的裂縫；演算法還具有利用幀間相關性，視相關等方面特點。
  11. Simple cluster sampling

    簡單整群抽樣
  12. Simple sampling inspection plan

    簡單抽樣檢查方法
  13. The method has som e features as follows : non - contact measurement, little sampling, no special req u irement about fluid, wide using range and simple apparatus

    該測量方法有下列特點：非接觸測量，采樣液體少，對液體無特殊要求，適用面廣，裝置簡單。
  14. The data for the study is taken from the answers to questionnaires dispatched to the teachers and students under study. the statistical method used is simple random sampling. the sample size is 223 junior - secondary students ( 119 males and 104 females ) and 27 teachers ( 11 males and 16 females )

    女生104人） ，及教師共27人（男教師11人，女教師16人） ，以隨機抽樣方式進行問卷調查，並利用spss10 . 0作為分析工具，採用因素分析、 f檢驗、卡方分析、兩兩相關等方法對問卷資料進行了統計分析。
  15. Simple random sampling

    簡單隨機抽樣
  16. The algorithm described here is simple, fast and intuitive, and achieves very good results when reconstructing curves from planar scattered data with different shapes and varying sampling errors

    該演算法幾何直觀性強、操作簡單，對平面上具有不同形狀和不均勻采樣誤差的散亂數據都能得到很好的重構效果。
  17. Methods after a general cross - sectional hygienic survey which was carried out by filling in questionnaires, the source water 、 off - work water and pipe water sampled from 20 % subjects which were selected by stratified sampling and simple random sampling were tested

    方法按設定的調查內容，先採用橫斷面現場普查填寫調查表的方法進行衛生學調查，然後按20 %的比例採用分層、隨機抽樣的方法，對水源水、出廠水、末梢水進行檢測。
  18. Except the simple and usual filter and algorithm, some advanced filter ways such as frequency sampling filter, karlman filter and several new algorithms such as cosine algorithm, semiwave fourier algorithm and wavelet transform algorithm are also studied

    除簡單、常見的濾波和演算法外，本章還探討了一些性能先進的濾波方法如頻率抽樣濾波、卡爾漫濾波和幾種微機保護新演算法如餘弦演算法、半波傅氏演算法以及小波變換演算法等。
  19. Fertilizers - sampling - simple sampling method for small lots of solid fertilizer

    肥料.第2部分:抽樣.第1節:小批量固體肥料抽樣方法
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