pca 中文意思是什麼

pca 解釋
acid]吡咯烷酮羧酸
  1. Passive cutaneous anaphylaxis, pca

    被動皮膚過敏反應
  2. Pca approach models the hvac system with its measurement data of normal operation condition. so, complicated analysis model is evitable

    主成分分析法利用系統在正常運行條件下的測量數據來建立系統的模型，從而避免了直接建立系統的解析模型。
  3. If you need moisturizing, choose an oil - free moisturizer that contains humectants such as glycerin, na - pca and hyaluronic acid, et cetera ( see ingredients table in the feature article of cosmetics )

    如果你需要保濕，可以選擇含有甘油，羧基酸，透明質酸等濕潤劑的無油產品。
  4. The pca results indicated that the characteristics of length, breadth, the angle of leaf basal in lamina and the characteristics of calyx - tube, corolla dimension and inflorescence pedicel in the flower were the main reasons leading to the morphological variations, and the f - test of single factor variance analysis verified the conclusion

    主成分分析顯示，葉部特徵的長度、寬度、葉基夾角等，以及花部特徵的花獸筒、花冠幅、花序總梗等是造成不同居群野生早櫻表型差異的主要因素，單因素方差分析也印證了這一結論。
  5. 3 ) pca - bp, the approach combining statistic theory and neural network technique, is systematically analyzed. ad hoc approaches for choosing some key parameters of the model are presented

    3 ）本文在系統分析了基於pca - bp的建模原理后，對人工神經網路模型的關鍵參數即隱層節點數的確定作了較為深入的探討，總結出了比較有效的取值方法。
  6. Acutesrata community. i get the conclusion through plenty of field survey and data analysis. ( 1 ). the pca analysis shows that the quercus aliena var

    （ 2 ）相關分析表明：海拔、坡向、發育階段、生物量等是影響研究區物種多樣性分佈格局的主要因子。
  7. Soft sensor modelling and application based on pca and ls - svm

    的軟測量建模與應用
  8. Electronic assembly process planning, especially the pca ( print circuit assembly ) process planning concerns much skill and knowledge. to enhance the efficiency of process planning and to improve the condition of the process management, a knowledge - based capp ( computer aided process planning ) system was established in this paper

    電子裝配工藝設計，尤其是印製電路板組裝（ pca ）工藝設計是一項知識性、經驗性很強的工作，為提高電子裝配工藝編制效率、改善工藝管理狀況，本文建立了基於知識的電子裝配capp系統。
  9. The studying method of flora adopted by this thesis are follows : the statistics of the dominant families and genera, along with single families and genera, abundance index ( ai ), similarity coefficient of genus ( scg ), floristic spectrum analysis ( fsa ), principal components analysis ( pca ), as well as agglomerative classification analysis ( aca )

    16 ；單種屬占總屬數的39 39 ，其種數僅占總種數的門26 ；而6個優勢科中所含的種數佔到總種數的903 ， 9個優勢屬中所含的種數占總種數的47
  10. Bea ( mpf ) personal contribution account ( pca ) building wealth for achieving your comfortable and carefree retirement. bea offers a pca to you. you can meet your target through regular monthly contributions

    想累積優厚的退休儲備，享受舒適的退休生活，東亞銀行誠意為你獻上個人供款賬戶，只需每月作出額外供款，便可達到你的理想退休生活。
  11. The relationship of the spca, pca and kpca are established. according to the covariance stationary processes, spca arithmetic also has certain stability and convergent similar to pca arithmetic

    由協方差平穩過程，得到譜主成分分析演算法也有類似於主成分分析演算法的穩定性和收斂性。
  12. In this thesis, based on principal component analysis ( pca ), covariance stationary processes and spectral analysis theory of linear operator, spectral principal component analysis ( spca ) is put forward

    在主成分分析的基礎上，基於協方差平穩過程理論和線性運算元譜分析理論，本文提出了譜主成分分析。
  13. In addition, this paper makes a comparison among the pls, canonical correlation analysis and principal components analysis ( pca ) method, which proves that the pls works better than the others when there are only the small sample and more dependent and independent variables. chen yinghui ( lndustry economics ) directed by : pro

    本文在交通運輸業與旅遊業的關系分析中，對偏最小二乘回歸方法與主成分分析方法作了比較，驗證了在樣本較少、多對多的回歸分析中，偏最小二乘方法有明顯的優勢。
  14. Then the relevant aircraft ground flotation analysis software is developed on the basis of cbr method and pca method

    在此基礎上，開發出了飛機地面漂浮性分析軟體。
  15. A systematic summary of previous work has been given first. then this paper presents a novel multi - stage face detection algorithm, which makes a good use of human face pattern ' s valuable information in colour image sequences. the difficult detection task has been divided into four steps : the preprocessing, which is to gain skin colored regions with human skin color model ; the roughly detection and face region refining by elliptic curve fitting ; the fine detection with facial features " detection and location ; the face / non - face classification step based on pca and gaussian density estimation technique

    本文對彩色序列圖像中的人臉檢測和跟蹤技術進行了深入的研究，其具體內容為：對近年來的研究工作進行了系統的介紹；提出了一個由粗到細的多階段的人臉檢測演算法，該演算法充分利用了序列圖像中人臉模式的各種有用信息，將復雜的檢測工作分為了四個部分：膚色區域分割預處理，人臉粗檢及利用橢圓擬和的人臉區域提煉，應用人臉基本特徵檢測和定位的人臉細檢， pca結合高斯概率密度估計的人臉驗證。
  16. Study on the ordination of climate factors in corn - growing regions of shanxi by pca

    山西玉米種植區氣候因素排序研究
  17. Experimental results on orl face database show the proposed impca and imlda are more effective and efficient than conventional pca and lda based methods such as eigenfaces and fisherfaces. finally, a strategy of feature parallel fusion is develope

    不僅如此，試驗結果還證實了所提出的基丁復線性投影分析的并行特徵融合方法優于傳統的串列特徵融合方法
  18. The protein encoded by orf1 show strong homology with cation efflux family protein from geobacter sulfurreducens pca [ identities = 65 / 272 ( 23 % ) ], and contains mmt1 - like putative conserved domains kog1485, mmt1 contains conserved domains kog1485 is mitochondrial fe2 + transporter ( cation diffusion facilitator superfamily ). so it can be considered that the protein encoded by o rf1 is fe2 + transporter involved in magnetosome biosynthesis in magnetospirillum gryphiswaldense msr - 1

    經同源比較和保守性結構域分析，推測orf1編碼的蛋白具有fe ~ （ 2 + ）轉運功能，在磁小體合成過程中將細胞質中fe ~ （ 2 + ）轉運到磁小體囊泡中，合成磁小體的同時去除fe ~ （ 2 + ）對細胞的毒害作用。
  19. A neural networks model based on pca - cga - rbf was proposed to infer the mi of manufactured products from real process variables

    摘要建立一個基於pca - cga - rbf的徑向基函數網路模型，從過程變量中預則產品的熔融指數（ mi ） 。
  20. Photon identification in the momentum range from 0. 5 to 100 gev by using pca method is presented and compared with the results attained by traditional shower topology method

    與傳統的簇射拓撲分析相比，在同等的效率下，理a區分電磁簇射和強子簇封的能力將提高10腸
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