directional data 中文意思是什麼

directional data 解釋
方向數據
  • directional : adj. 1. 方向的。2. 【無線電】指向的，定向的。
  • data : n 1 資料，材料〈此詞系 datum 的復數。但 datum 罕用，一般即以 data 作為集合詞，在口語中往往用單數...
  1. Finally, this thesis discussed these following questions : first, the algorithm of used the error image for improving the purpose of the edge detection. secondly, we have transformed the solved question of the first and the second directional derivative to frequency domain and founded they have a single formulae in frequency domain. thirdly, we have described the singular signal and the noise by using the correlations of the neighbor data after wavelet transform

    最後，在傳統的邊緣檢測演算法和小波分析的邊緣檢測演算法之外，對以下幾個方面也進行了一些討論： 1 ）利用誤差圖像來提高邊緣檢測效果的演算法； 2 ）將求解任意方向的一階、二階方向導數的問題轉換到頻域中去求解，發現在頻域中它們具有簡單易用的公式，使得原來求解任意方向的一階、二階導數的比較困難的問題變得容易實現了。
  2. A novel bi - directional dc / dc converter was introduced in the dissertation, which based on refer much converter data. the soft switching, phase - shifted pwm and bi - directional dc / dc converter hang together, depress circuit switch ullage and noise effectively, which provide condition to increase switch frequency, efficiency and reduce size and weight for the converter ; at the same, the converter have the virtue of structure compact, voltage and current stress small etc such as ordinary hard switch converter

    本文作者在查閱國內外大量雙向dc dc變換器資料的基礎上，採用一種新型雙向dc dc變換器的拓撲結構，把軟開關技術和移相控制pwm技術以及雙向dc dc變換器技術有機結合在一起，有效地降低了電路的開關損耗和開關噪聲，為變換器裝置提高開關頻率、效率以及降低尺寸及重量提供了良好的條件。
  3. Exponential bounds of mean error for the kernel regreeion estimates with directional data

    方向數據回歸函數核估計平均偏差的指數界
  4. Complete the bi - directional data communication between the hardware and the microcomputer. ( 3 ) design the cpld ( complex programable logic device ) processing circuit to preprocess the initial signal in the data acquisition module

    （ 3 ）下位機採集模塊部分，在一塊cpld （ complexprogramablelogicdevice ）集成晶元上燒寫了設計的電路，能夠對輸入原始信號進行預處理。
  5. In ddmm, the rdb is taken as the bottom storing medium and the upper xml view is set up for data exchange and direct application under internet / intranet environment. based on ddmm, the multi - tiered and bi - directional data integration technique between xml and rdb, is studied systematically and in detail, and the reciprocal data accessing and exchange between rdb and xml is carried out on respectively three levels : static data transformation, dynamic data query and synchronized data update. the infrastructure for manufacturing informationlization will certainly be internet / intranet, and xml has been a factual standard for data representation under internet / intranet environment

    製造業信息化的基礎平臺將是internet intranet ， xml （ extensiblemarkuplanguage ，可擴展標記語言）已經成為internet intranet環境下數據表達的事實標準，而目前企業大量數據仍存在於佔主導地位的關系數據庫（ relationaldatabase ，簡稱rdb ）中，如何在rdb與xml之間架起數據交換與數據操作的橋梁，已成為製造業在internet intranet環境實現信息化迫切需要解決的突出問題之一。
  6. Aiming at this problem, the main research issues and achievements in this paper are as follows : bi - directional data transformation between rdb and xml with semantic constraints preserved for most of existing researches on static data transformation between xml and rdb, dtd is taken as the schema description language for xml, and the semantic constraints are often lost during the transformation process. to overcome these disadvantages, the author adopts xml - schema, a standard schema description language proposed by w3c to replace dtd, as the description method owing to its more powerful functions than dtd, and of course with the syntax much more complicated. after analyzing the constraints characteristics in both xml - schema and relational schema, a semantic constraints - preserved algorithm is proposed which can realize the bi - directional schema mapping between rdb and xml through a formalized description of xml based on regular tree and a general expression for relational schema based on direct graph approach

    保留語義約束的xml與rdb雙向靜態數據轉換技術現有研究大多採用dtd （ documenttypedefinition ，文檔類型定義）作為xml的模式描述語言，並且在模式映射過程中丟失語義約束信息，本文分析了xml - schema （ xml - schema採用與dtd完全不同的語法，數據描述能力更強同時也更為復雜，已被w3c確定為替代dtd作為xml模式描述語言的標準）及關系模式的語義約束特徵，通過基於正則樹的xml形式化描述方法以及基於有向圖的一般關系模式表示方法的研究，建立保留語義約束的xml - schema與關系模式的雙向模式映射演算法，實現了xml與rdb的雙向數據轉換，較好地解決了xml與rdb在靜態數據轉換層面的數據集成問題，可有效滿足企業大量rdb數據面向xml的發布以及與日俱增的xml數據存入rdb的應用需求。
  7. 1284 - 1994 improves the rate of data transfer of parallel interface greatly and provides bi - directional data transfers it makes the demand for data is no more the bottleneck of peripheral performance at the same time, due to the characteristic of bi - directional data transfer, the host can identify the mode of peripheral sc the problem of mistake operation on unsupported device can be avoided

    Ieee1284 - 1994標準使并行介面的數據傳輸速度得到了極大的提高，並且支持雙向數據傳輸。這使得對數據的需求量不再成為外設的性能瓶頸，同時由於雙向數據傳輸特性，所以主機能識別外設的型號，這樣就不至於對不支持的設備誤操作。
  8. We first realize the classical fingerprint classification algorithm based on directional field and analyze the experiment data

    我們首先研究和實現了目前較為常用的基於方向場計算的指紋分類演算法，並結合實際指紋給出了實驗及其分析。
  9. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  10. Directional reception and verification of acoustic well logging data

    聲波測井信號定向接收處理方法及校驗
  11. The writer mainly uses the financial ratio analytical method and the most popular approaches in determining the international banking efficiency ? the efficient frontier approaches, in which this paper choose one of the non - parameter approaches, data envelopment analysis ( dea ), to evaluate and analyze the above four banks ’ changes in efficiency before and after mergers during 1999 - 2004, and it also makes an omni - directional comparison from many angles, with quantitative and qualitative analysis

    通過綜合運用財務比率分析方法和國際銀行業效率分析中比較流行的前沿分析方法中的非參數分析方法? ?數據包絡分析法（ dea ）對上述四大銀行在1999 - 2004年間銀行並購效率的變化情況進行了全方位、多角度、動靜態相結合的定量和定性比較分析。
  12. The trick is how best to combine satellite - positioning technology, laser range - finders, radar sensors and omni - directional cameras to gather enough data ? but not too much ? so the vehicle ' s software can figure out what is going on before hitting something or swerving onto the wrong side of the road

    訣竅在於如何最大程度地將衛星定位技術、激光測距儀、雷達探測器以及全向照相機集合到一起，獲取足夠但總不會過多的數據，以便可以在車輛撞上某物或者駛到道路的錯誤一側之前讓軟體計算出所處狀況。
  13. For the problem of present engineering no criterion market and industry standard disunity of no - dig horizontal directional drilling under pipe paving, the view is put forward in particularity and security of no - dig horizontal directional drilling pipe paving and in reason using of under resource. it emphasizes engineering method data management and unify layout management of no - dig horizontal directional drilling. and it analyzes technology economic and discuss the development of under pipe directional equipment and put forward new thought and studying aspect of no - dig horizontal directional drilling construction engineering criterion management - the effect of all kinds of tache and factor in the different no - dig directional drilling construction are discussed from a great deal of detail no - dig engineering examples

    就當前水平定向鉆進鋪設地下管線工程市場不規范和行業標準不統一的問題，本文從非開挖水平定向鉆進鋪管技術特殊性和安全性及地下資源空間的合理利用方面提出了自己的看法和見解，特別強調了對非開挖定向鉆進鋪管工程技術資料的管理和非開挖施工工程的統一規劃管理的問題，並對非開挖水平定向鉆進施工進行了技術經濟分析，並就非開挖施工工程的管線定位的儀器研發進行了分析探討，為非開挖施工的管線規范管理提出了新思路和研究方向。
  14. This thesis presents an odometry model for 4 - wheel omnidirectional mobile robots and proposes a method to achieve holonomic description of robot ’ s kinematic characteristics based on two dual - axis accelerations. with combinated data from encoder 、 acceleration 、 compass and pose from an omni - directional vision system, a kalman filter is designed to fuse data for robot ’ s self - localization. results of experiments concludes the achievement of this thesis

    通過分析本文選用的幾種傳感器和視覺在機器人定位應用中的特點，對基於kalman濾波的融合方法在機器人定位中的應用進行了討論，建立了機器人加速度模型，並對其線性化，基於傳感器測量和預處理結果，建立了系統觀測模型。
  15. A novel bi - directional dc - dc converter is introduced, which based on referring to much converter data. the converter is composed of two symmetrical half - bridge circuits

    作者在查閱國內外大量雙向dc - dc變換器資料的基礎上，採用一種新型雙向dc - dc變換器的拓撲結構。
  16. Sequence analysis data indicated that 99 % homology was indentified between the published bovine follistatin cdna gene and my two - directional sequenced products. the sequence data also shows that the open reading frame of the pet - 30a - fs2 is correct

    將獲得的follistatincdna基因克隆入原核表達載體pet - 30a中，組裝成了原核表達載體pet - 30a - fs2 ，經正反測序表明其閱讀框正確。
  17. Users inquire the customized report form, and can collect multidimension analysis to the wanton data in the system through the self - defining condition, show the analysis result with excellent pictures and texts, offer many angles, multi - level, omni - directional decision basis to policymaker

    用戶通過自定義條件，查詢定製報表，可以對系統中任意數據集進行多維分析，圖文並茂地顯示分析結果，為決策者提供多角度多層次全方位決策依據。
  18. The system can accomplish wireless power supply in the industrial field for the equipment of data collection and data transmission and bi - directional wireless communication of control signals and data collected from the field in the same time

    該系統可為工業現場數據採集設備、數據無線通信設備提供無線電能，同時實現控制信號和現場設備數據之間的雙向無線通信。
  19. In course of image enhancement processing, this paper, by the means of radiation enhancement, spatial enhancement, image operation, color enhancement and rs data merge, thinks that the combined image by textural information image and original image can reflect both detail information and textural information while carrying out non - directional edge of the linear stretch image

    在圖像增強處理中，運用輻射增強、空間增強、圖像運算、色彩增強、多源遙感數據融合等多種方法，經過多次試驗對比，發現對線性拉伸后的圖像進行非定向邊緣增強，得到的紋理信息圖像再與原始圖像作疊加運算，得到的合成圖像既突出了圖像的細節信息又突出了紋理信息。
  20. Bn is a directed acyclic graph with network structure, which is intuitionistic and easy understanding. it can handle multi - information expression, data fusion and bi - directional parallel reasoning. the ability to colligate the prior information and the current information makes the inference much more accurate and believable

    貝葉斯網路是一種基於網路結構的有向圖解描述，具有多源信息一致表達與信息融合能力，能進行雙向并行推理，並能綜合先驗信息和樣本信息，使推理結果更為準確可信。
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