維數減縮 的英文怎麼說

中文拼音 [wéishǔjiǎnsuō]
維數減縮 英文
dimensionality reduction
  • 維 : Ⅰ動詞1 （連接） tie up; hold together; link 2 （保持; 保全） maintain; safeguard; preserve; keep ...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 縮 : 縮構詞成分。
  1. ( 2 ) aiming at the requirement of safe storage of the electronic documents on the information integrated platform in manufacturing enterprise, using encryption / decryption and compression / uncompression techniques and saving the electronic documents as some special attribute object of large database and managing the enterprise electronic documents effectively through database, a safe access mechanism of functional grant < wp = 7 > and recommendatory grant to decrease grant management maintenance cost is proposed and the storage mechanism of special database attribute object is studied and the method for saving, accessing and retrieving electronic document quickly is constructed. thus these methods can make the electronic documents of information integrated platform in manufacturing enterprises get safe, reliable and quick access. ( 3 ) according to this circumstance in which web pages are selected as the user interface of manufacturing application system, the safe measures of access control over web page resources are provided

    （ 2 ）針對製造企業信息集成平臺中電子文檔安全存儲要求，採用加密和壓縮技術，將電子文檔作為大型數據庫中某種特殊屬性對象來存儲，以數據庫方式對企業電子文檔進行集成的、統一的管理，提出一種訪問控制的增強型安全設計原則，基於此原則建立了管理授權和推薦式授權的安全訪問機制，用以提高系統的訪問安全性，並大大減少授權管理維護量；研究了特殊屬性對象的數據庫存儲機理，從而構造一種快速存儲、訪問和檢索電子文檔的方法，使得企業信息集成平臺的電子文檔獲得安全、可靠、快速的訪問。
  2. Accordingly, using graph theory and operating experience abroad for reference, it firstly brings forward a new method of voltage rectification which based on pilot bus with voltage control area in view of the weak coupling among every vca ( voltage control area ), using decomposing method of multi critical value, it realizes the eliminating vinculum of every vca. and then, the rectification starts by pilot bus voltage of every vca. so the resolution of whole power net is diverted into calculating smaller sub - net

    由於各個電壓控制區之間無功電壓的弱耦合性，利用多閥值分解的分區演算法，實現區域間的解耦，然後根據各個子網路的主導節點的電壓進行校正，從而把求解整個網路的問題轉化為求解各個小的子網路，降低了網路維數，減少了無功設備控制動作次數，提高了校正成功率，縮短了計算時間。
  3. The simulation results are compared to the normal dipole antenna in order to observe the influence of fractal and investigate the effect of antenna miniaturization. the relationship between miniaturization and fractal dimension is researched. the koch and 3 / 2curve fractal unit are applied to yagi - uda antenna, the performance like impedance characteristic and radiation pattern is simulated by cst microwave studio ?

    對其阻抗特性及輻射方向圖進行了模擬計算，並分別與未應用分形的普通半波振子天線相比較，觀察分形對天線性能的影響，以檢驗分形天線小型化的效果，研究了尺寸縮減性與其分形結構的分形維數之間的關系。
  4. Lwac is becoming one of the important trends in the development of modern concrete. to solve the problems such as poor workability, large shrinkage value and crack easily of lwac, on the basis of systematic experiments, the author establishes lwac workability evaluation system and advances the testing method of pumping performance of lwac ; the control technology of discrete of lwac is introduced through analyzing structure formation process and establishing the mathematic model ; based on studying the strength source of lwac and the function mechanism of artificial additive, this paper not only confirms some major factors which affect concrete strength but explores the preparation technology route of high strength lwac ; the different effects of several fibers in lwac have been studied, and the fiber is introduced in pumping lwac to improve its crack - proof performance

    本文針對輕集料混凝土工作性能差、收縮變形大、易於開裂等問題，根據大量實驗建立了高強輕集料混凝土工作性能的評價體系，提出了高強輕集料混凝土可泵性的測試方法；通過分析輕集料混凝土的結構形成過程，建立了輕集料混凝土拌和物物料運動的數學模型，提出了防止輕集料混凝土分層離析的技術措施；通過對輕集料混凝土強度來源和礦物摻合料的作用機理的深入研究，確定了影響輕集料混凝土強度因素的主次關系，提出了配製高強輕集料混凝土的技術路線；研究了纖維在輕集料混凝土中的增強增韌、減少收縮的作用機理。
  5. This research is does using the glass fiber for the hillside makes up the strong strengthened material, mixes in the bolivian filament in the different hillside slope, the change hillside place intensity, improves regarding is easy to have the earth stone to flow local the hillside to give strengthens, with reduces the earth stone to cave in the after scope area, in has the after destruction regarding guard earth shi liu and the earth stone class to reduce to is smallest, after the process experiment data knew, mixes in bolivia truly to be allowed to strengthen the hillside place to the textile fiber the intensity, but mixes in the glass fiber to the too steep slope not to be big to its overall intensity help, after again comes is mixes in the glass fiber the hillside avalanche, proliferates the area comparatively originally not to mix in the glass fiber the area to be small

    摘要本篇研究是利用玻璃纖維做為山坡地補強的強化材，在不同的山坡坡度上混入玻璃纖維，改變山坡地的強度，改善對于易發生土石流地區的山坡地給予加強，和縮小土石坍塌后的?圍面積，在對于防?土石流和土石流發生后的破壞減到最小，經過實驗后的數據得知，混入玻璃纖維確實可以加強山坡地的強度，但對過于陡峭的坡度混入玻璃纖維對其整體強度幫助不大，混入玻璃纖維的山坡崩塌后，所擴散面積較原本沒有混入玻璃纖維的面積小。
  6. The result of macro - quality experiments show : mineral admixtures markedly slow the hydrating velocity of cement slurry, decrease and delay the hydrating max - temperature, in which steel slag is more effective ; expansive agents compensate concrete shrinkage, enhance the concrete dense degree, strengthen the interfacial layer between fiber and cement matrix and improve the physical mechanics qualities of acic ; minimal admixtures markedly improve the concrete workability property, increase the concrete later intensity & density and the capability of anti - chemical attack and anti - permeability ; hybrid fiber reinforces the toughness of obviously acic by the means of anti - cracking effect of fiber with different sizes and different properties in the corresponding construction levels

    實驗結果顯示：鋼渣摻合料能顯著減緩水泥漿體水化速率，降低砂漿的水化溫升並延遲最高溫升時間；補償混凝土收縮，提高混凝土密實度，加強纖維與水泥石的界面粘結，增強混凝土力學性能，但不能明顯改善混凝土韌性。混雜纖維通過纖維的不同尺度與不同性質在相應的結構層次上產生阻裂效應，增韌鋼渣防滲抗裂混凝土；增加混凝土的破壞極限能，極大提高混凝土抗彎曲能力和韌性指數，改善混凝土脆性。
  7. This paper summarized a system feature set for transient stability classification, several methods for analyzing the separability of input space of transient stability classification are discussed, tabu search - ing technique is employed to select an effective set of features from a large initial features set. the classification test shows that the presented method works very well for feature selection. fisher linear recognition is employed to cut down the training sample set, the computation burden of the ann training is alleviated very much, so the convergence performance is improved

    本文總結提出了一組用於穩定分類的系統特徵，研究了幾種暫態穩定分類輸入空間可分性分析的方法，並利用tabu搜索技術從一個維數較大的特徵集中選擇出一組有效特徵，取得了良好的效果；研究提出了利用fisher線性識別技術壓縮訓練樣本集的方法，大大減輕了ann的訓練負擔，提高了ann收斂的性能。
  8. This class implements the validity constraints defined in the world wide web consortium extensible markup language 1. 0 recommendation for document type definitions dtds, the microsoft xml core services msxml schema specification for xml - data reduced schemas, and the w3c xml schema recommendation for xml schema definition language schemas

    該類實現萬維網聯合會（ w3c ）可擴展標記語言（ xml ） 1 . 0建議中為文檔類型定義（ dtd ）所定義的有效性約束，實現microsoft xml核心服務（ msxml ）架構規范中為xml數據縮減（ xdr ）架構所定義的有效性約束，並實現w3c xml架構建議中為xml架構定義語言（ xsd ）架構所定義的有效性約束。
  9. A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  10. Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  11. Any homogeneous viscoelastic medium subjected to one - dimensional tension and compression can be characterized in terms of the phase velocity c ( w ) and the attenuation coefficient deduce the complex modulus and the other equivalent viscoelastic functions

    一維的縱向壓縮波在同質的粘彈性介質中傳播時，材料的粘彈性特性主要通過縱向波的傳播速度c （ w ）和衰減系數a （ w ）兩項來定義。
  12. Recently it has also been applied to rf ( ratio frequency ) fields, and valuable achievements have been reached. ‘ fractal ’ has space filling ability and self - similarity ability. ‘ fractal ’ is a recursively generated structure by iterated function systems. it has a fractional dimension and possesses a self - similarity property. the concept of a ‘ fractal ’ has been applied to antenna design in order to reduce the size of antenna and obtain multi - band frequency operation

    分形具有空間填充能力和自相似性，分形是通過迭代函數系統產生的具有自相似性的分數維結構，分形的概念可用於天線設計以實現天線的尺寸減縮和多頻特性，這在軍用和民用方面都有著非常廣泛的應用前景。
  13. The automotive ergonomic design oriented digital 3 - d human - modeling system makes it possible to integrate automotive ergonomic design into the 3 - d computer - aided automotive design environment. it will reduce ergonomic redesign count, shorten the developing cycle of bodyworks, and decrease the manufacturing cost of automobile products

    面向汽車人機工程設計的數字化三維人體建模系統，使汽車人機工程設計能夠集成到已有的汽車設計三維cad環境，有助於減少人機工程設計方面的返工、縮短車身開發時間、降低整車製造成本。
  14. The results shows that the combined use of fibers and expansions was superior to the use of fibers or expansion agents alone in reducing the amounts of plastic shrinkage cracks and diminishing the size of cracks, and it improved the resistance to plastic shrinkage crack extremely

    文章研究了聚丙烯纖維和膨脹劑復合對砂漿塑性收縮裂縫的影響，結果顯示，纖維與膨脹劑復合，在減少塑性收縮裂縫數量和細化裂縫兩個方面均優于纖維或膨脹劑的單獨作用，砂漿抵抗塑性收縮開裂能力顯著提高。
  15. The present research status and some methodologies about the 3d reconstruction and visualization are introduced in this paper, while three important contents, i. e., image pre - processing, 3d reconstruction and 3d reveal are more concerned. image pre - processing includes interpolating, filtering, gray adjusting, rotating, zooming, selecting voi and reducing elements which are very important for the next step. the work of this paper use marching cubes ( mc ) algorithm to reconstruct the 3d object after analyzing the volume rendering method and the surface rendering method

    在二維圖像預處理方面討論了濾波、灰度修正、旋轉和縮放、感興趣區域voi （ volumeofinterest ）的提取、減少體數據集中象素的數目、層間插值等，這些處理可以減少噪聲的干擾，使物體的特徵更加突出、需要處理的數據大大減少、節省存儲空間、加快繪制速度，這些處理對於後一步的三維重建是非常必要的；在三維重建方面，分析了面繪制和體繪制各自的優點和缺點，選取了面繪制中經典的mc演算法實現三維重建；在三維顯示中實現對體數據的顯示、剝離顯示、旋轉、等值面顯示、沿x 、 y軸的剖切顯示、光照顯示等效果。
  16. Finally, the two dimensional flow in the diffuser is calculated, the results show that the change of ma makes an effect to the performance of the diffuser. owing to the accretion of ma, the action of oblique shock waves and the boundary layer pricks up, the flow separates from the wall where the shock waves impinge on the boundary layer more quickly, the cluster of diamond shock waves becomes larger. moreover, by comparing the change of flow field under different structure parameter, it is found that the augment of length of constant area section alter the structure of fluid field little, a smaller area ratio and larger angle of compression section make the diffuser working better

    最後，針對擴壓器中的二維流場進行了數值模擬，結果表明馬赫數對擴壓器性能影響較大，隨著馬赫數的增大，擴壓器管道內激波-附面層干擾加劇，流動從附面層分離相應加劇，激波串數目增多;通過比較不同結構參數下的擴壓器內流場，發現等直段長度的變化幾乎沒有改變流場結構，只是對局部流場稍有影響，並且在其它參數不變的情況下，一定范圍內減小面積比a2 / a1和增大收縮角有利於擴壓器性能的提高。
  17. Pochet, n., et al. " systematic benchmarking of microarray data classification : assessing the role of nonlinearity and dimensionality reduction. " bioinformatics, 2004

    基因晶元數據分類的系統基準：評估非線性和維度的縮減。 《生物信息學》 ， 2004年。
  18. Since the heart can pump more volume of blood foreach contraction ， the heart has less time of contraction to maintain the same cardiac output

    由於心臟每次收縮時排出的血液量增加，心臟能減少收縮次數，但仍能維持相等之血液供應量。
  19. A " fractal " is a recursively generated structure having a fractional dimension and self - similarity property. the concept of a " fractal " has been applied to antenna design in order to reduce the size of antenna and obtain multi - band frequency operation. fractal antennas have broad application prospect in military and civil application

    分形是通過迭代產生的具有自相似性的分數維結構，分形的概念可用於天線設計以實現天線的尺寸減縮與多頻特性，這在軍用和民用方面有著廣泛應用前景。
  20. A " fractal " is a recursively generated structure having a fractional dimension and self - similarity property. the concept of a " fractal " has been applied to antenna design in order to reduce the size of antenna and obtain multi - band frequency operation. fractal antenna is useful in military and civil application

    分形是通過迭代產生的具有自相似性的分數維結構，分形的概念可用於天線設計以實現天線的尺寸減縮與多頻特性，這在軍用和民用方面都有著很大的潛力。
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