Showing 761 - 780 results of 1,228 for search '"principal component analysis"', query time: 0.09s Refine Results
  1. 761

    The Role of Aquaculture in Shaping the Morphology of <i>Babylonia areolata</i>: A Comparative Study of Cultured and Wild Populations by Haishan Wang, Zhi Chen, Yuhe Tong, Le Ye, Youming Li

    Published 2025-01-01
    “…Statistical methods, including Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA), were used to assess morphological differences. …”
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    Article
  2. 762

    Establishment of fingerprint of phenolic compounds in Semen Ziziphi Spinosae and study on the spectrum-effect relationship based on different preceding cropping areas by Junfeng Jiang, Jun Luo, Wenyu Zheng, Jiayi Liu, Hui Jiang, Cuiyun Wu, Hongjin Bai

    Published 2025-01-01
    “…The 22 SZS samples could be categorized into 3 groups, with cluster analysis and principal component analysis results being largely consistent. …”
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  3. 763

    Thriving in golden years: Promoting psychological well-being for healthy ageing in India by Dhananjay W Bansod, Raghunath Mandi

    Published 2025-03-01
    “…Methods: We created composite score of healthy ageing using Principal Component Analysis based on LASI (wave-1) data 2017–18 in accordance with the WHO framework of healthy ageing based on the functional ability of an individual. …”
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    Article
  4. 764

    Fluorescence Characteristics of Humic Acid in Chinese Black Soil under Long-Term Fertilization by Dan Wei, Yan Li, Shan-shan Cai, Liang Jin, Yu-mei Li, Wei Wang, Yang Bai, Yu Hu, Nicholas Clarke

    Published 2019-01-01
    “…Excitation and emission matrices combined with parallel factor analysis were used to investigate the structure of the humic acid. Principal component analysis was performed to select the most suitable parameters for the description of humic acid. …”
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    Article
  5. 765

    Domain adaptation-based multistage ensemble learning paradigm for credit risk evaluation by Xiaoming Zhang, Lean Yu, Hang Yin

    Published 2025-01-01
    “…The experimental results demonstrated that the proposed domain-adaptation-based multistage ensemble learning paradigm is superior to principal component analysis, joint distribution adaptation, random forest, and other ensemble and transfer learning methods. …”
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    Article
  6. 766

    Data-Driven Methodology for the Prediction of Fluid Flow in Ultrasonic Production Logging Data Processing by Hongwei Song, Ming Li, Chaoquan Wu, Qingchuan Wang, Shunke Wei, Mingxing Wang, Wenhui Ma

    Published 2022-01-01
    “…Then, the transducer signal is preprocessed by distance correlation analysis (DCA), and independent features are extracted by principal component analysis (PCA). The extracted features are used as input to a least-squares fit, which gave the oil flow rates as output. …”
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  7. 767

    Microcrustaceans structure determined by the type and trophic state of lakes by Bharguan Pizzol Nogueira, Camila Moreira-Silva, Thaís Coimbra Marigo, Gilmar Perbiche-Neves

    Published 2025-02-01
    “…Results A principal component analysis (PCA) separated three types of lakes: eutrophic (natural and man-made) to mesotrophic. …”
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  8. 768

    Changes in Vitamin E and β-Carotene Contents in Various Edible Cassava Leaves (Manihot esculenta Crantz) of Different Ages across Multiple Seasons by Alphonse Laya, Benoît B. Koubala

    Published 2020-01-01
    “…The effects of varieties and harvest ages on the biosynthesis regulation of these compounds were confirmed by principal component analysis (F1x F2: 74.34%). Edible cassava leaves can be considered as sources of vitamin E for natural dietary antioxidant during different ages, and the best time to harvest EN and AD varieties is at 6MAP on the basis of α-tocopherol equivalent or content of biologically active vitamin E content, and EN and AD varieties performed the overall best. …”
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    Article
  9. 769

    Phenotypic Diversity of Doum Palm (Hyphaene compressa), a Semi‐Domesticated Palm in the Arid and Semi‐Arid Regions of Kenya by Agnes Omire, Nancy L. M. Budambula, Johnstone Neondo, Robert Gituru, Cecilia Mweu

    Published 2020-01-01
    “…Linear mixed-effects models, principal component analysis, and linear discriminant analyses were used to assess the variation in the morphological traits of doum palm based on the regions. …”
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    Article
  10. 770

    PCA-Based Line Detection from Range Data for Mapping and Localization-Aiding of UAVs by Roberto Opromolla, Giancarmine Fasano, Michele Grassi, Al Savvaris, Antonio Moccia

    Published 2017-01-01
    “…Instead, line fitting is carried out by exploiting the Principal Component Analysis, unlike traditional techniques relying on least squares linear regression. …”
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  11. 771

    An Adaptive EEG Feature Extraction Method Based on Stacked Denoising Autoencoder for Mental Fatigue Connectivity by Zhongliang Yu, Lili Li, Wenwei Zhang, Hangyuan Lv, Yun Liu, Umair Khalique

    Published 2021-01-01
    “…Compared with principal component analysis, the proposed method can significantly improve the signal to noise ratio and suppress the noise interference. …”
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    Article
  12. 772

    INTERSTRAIN DIFFERENCES IN EMOTIONAL AND WEIGHT INDICES IN GC RATS WITH CATATONIC RESPONSE AND WISTAR RATS by T. A. Alekhina, R. V. Kozhemjakina

    Published 2018-07-01
    “…Multivariate analysis methods were applied: factor analysis and principal component analysis. We confirmed the inclination of GC rats of the generation studied to freezing in quiet surrounding and after a strong acoustic sti - mulus. …”
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  13. 773

    Baseline hydro-geochemical characteristics of groundwater in Abu Ali watershed (Northern Lebanon) by Rachad Al Haj, Mohammad Merheb, Jalal Halwani, Baghdad Ouddane

    Published 2025-02-01
    “…Additionally, cluster analysis and principal component analysis (PCA) divide the samples into four groups. …”
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    Article
  14. 774

    Re-calibrating measurements of low-cost air quality monitors using PCR-GPR air quality forecasting models. by Bing Liu, Shuting Yang, Junqi Wang

    Published 2025-01-01
    “…First, we perform Principal Component Analysis (PCA) on the measurement data of the AQM to solve the multicollinearity problem. …”
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    Article
  15. 775

    Adaptive Gaussian Incremental Expectation Stadium Parameter Estimation Algorithm for Sports Video Analysis by Lizhi Geng

    Published 2021-01-01
    “…Also, different online updating strategies are adopted for the template set and Principal Component Analysis (PCA) subspace to alleviate the drift problem while ensuring that the algorithm can adapt to the changes of target appearance in the dynamic tracking environment. …”
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  16. 776

    Fifth Lumbar Vertebral Shape in Early-Stage Lumbar Spondylolysis: Three-Dimensional Bone Morphology Analysis Using Homologous Models by Yuji Yamane, Hajime Toda, Masaki Katayose

    Published 2025-01-01
    “…Methods: Homologous models of the L5 vertebra were constructed using computed tomography data from 72 patients with early-stage spondylolysis (SP group) and 95 patients without spondylolysis (CON group). Principal component analysis was performed on the three-dimensional coordinates of all vertices of the generated homologous models. …”
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  17. 777

    PTR-ToF-MS VOC Profiling of Raw and Cooked Gilthead Sea Bream Fillet (<i>Sparus aurata</i>): Effect of Rearing System, Season, and Geographical Origin by Iuliia Khomenko, Valentina Ting, Fabio Brambilla, Mirco Perbellini, Luca Cappellin, Franco Biasioli

    Published 2025-01-01
    “…A total of 227 mass peaks were identified. Principal component analysis (PCA) showed a clear separation between cooked and raw samples, with cooking causing a significant increase in 64% of VOCs, especially hydrogen sulphide, methanethiol, and butanal. …”
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  18. 778

    Fault Diagnosis of Planetary Gearbox Based on Motor Current Signal Analysis by Ziyuan Jiang, Qinkai Han, Xueping Xu

    Published 2020-01-01
    “…Subsequently, four classical machine learning models, including the support vector machine (SVM), decision tree (DT), random forest (RF), and AdaBoost, are used for fault classifications based on the features extracted via principal component analysis (PCA). The convolutional neural network (CNN), which can automatically extract features, is also adopted. …”
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    Article
  19. 779

    Comparative Performance of Sentinel-2 and Landsat-9 Data for Raw Materials’ Exploration Onshore and in Coastal Areas by Morgana Carvalho, Joana Cardoso-Fernandes, Francisco Javier González, Ana Claudia Teodoro

    Published 2025-01-01
    “…Standard remote sensing methods such as RGB combinations, Principal Component Analysis (PCA), and band ratios were adapted and compared for both satellites. …”
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  20. 780

    Wheat cultivars grain yield and quality traits variability under conditions of southern Pannonian plain by Timić Jovana, Dražić Tanja, Mirosavljević Milan, Jocković Bojan, Aćin Vladimir, Mikić Sanja, Brbaklić Ljiljana

    Published 2024-01-01
    “…Thousand grain weight showed the highest variability depending on genotype influence, protein content and sedimentation value that were mostly affected by environmental conditions, while the genotype and environment interaction had the greatest impact on hectoliter weight and grain yield. Using principal component analysis significant positive relationship was observed between protein content and sedimentation value, and between thousand grain weight and hectoliter weight. …”
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    Article