Showing 581 - 600 results of 1,228 for search '"principal component analysis"', query time: 0.08s Refine Results
  1. 581

    Acylcarnitine Profiles in Plasma and Tissues of Hyperglycemic NZO Mice Correlate with Metabolite Changes of Human Diabetes by Anna Weiser, Pieter Giesbertz, Hannelore Daniel, Britta Spanier

    Published 2018-01-01
    “…We observed high concentrations of fatty acid-derived ACs in 11 female mice, high abundance of branched-chain amino acid- (BCAA-) derived ACs in 6 male mice, and slight increases in BCAA-derived ACs in the remaining 6 males. Principal component analysis (PCA) including all ACs and AAs confirmed our hypothesis especially in plasma samples by clustering females, males with high BCAA-derived ACs, and males with slight increases in BCAA-derived ACs. …”
    Get full text
    Article
  2. 582

    Analysis of Quality Differences in Radix Dipsaci before and after Processing with Salt Based on Quantitative Control of HPLC Multi-Indicator Components Combined with Chemometrics by Hangsha Wu, Yue Lv, Rui Tang, Mingfang Zhao, Yafei Li, Feiyang Wei, Changyu Li, Weihong Ge, Weifeng Du

    Published 2024-01-01
    “…Then, the chemometric methods such as principal component analysis (PCA) and fisher discriminant analysis (FDA) were used to evaluate the quality of raw and salt-processed RD. …”
    Get full text
    Article
  3. 583

    Machine‐Learned HASDM Thermospheric Mass Density Model With Uncertainty Quantification by Richard J. Licata, Piyush M. Mehta, W. Kent Tobiska, S. Huzurbazar

    Published 2022-04-01
    “…We utilize principal component analysis for dimensionality reduction, which creates the coefficients upon which nonlinear machine‐learned (ML) regression models are trained. …”
    Get full text
    Article
  4. 584

    Exploring shape diversity and sexual dimorphism in two populations of Nigma conducens through geometric morphometrics by Safa M. El-masry, Tarek G. Ismail, Asmaa N. Mustafa

    Published 2025-02-01
    “…This study employed geometric morphometrics to investigate prosoma shape and size variations between two populations of Nigma conducens spiders and between sexes within each population. Principal Component Analysis (PCA) explored shape variation, while Canonical Variate Analysis (CVA) compared shape differences between populations and sexes. …”
    Get full text
    Article
  5. 585

    Citizens of the Global South value urban green space: an example from Iran by Sahel Azizkhani Shadisheh, Kamran Shayesteh, Michael Farmer, Gad Perry

    Published 2024-10-01
    “…The average WTP was $0.93 per person per month, totaling over $6.4 million annually. Principal component analysis identified four key predictors of WTP: economic status, geographic origin, gender, and aesthetic preference. …”
    Get full text
    Article
  6. 586

    Posterior AD-Type Pathology: Cognitive Subtypes Emerging from a Cluster Analysis by Antonella Cappa, Nicoletta Ciccarelli, Eleonora Baldonero, Marialuisa Martelli, Maria Caterina Silveri

    Published 2014-01-01
    “…Methods. 23 PCA and 16 DAT patients were studied. By a principal component analysis performed on a wide range of neuropsychological tasks, 15 variables were obtained that loaded onto five main factors (memory, language, perceptual, visuospatial, and calculation) which entered a hierarchical cluster analysis. …”
    Get full text
    Article
  7. 587

    Dynamic Metabolic Footprinting Reveals the Key Components of Metabolic Network in Yeast Saccharomyces cerevisiae by Pramote Chumnanpuen, Michael Adsetts Edberg Hansen, Jørn Smedsgaard, Jens Nielsen

    Published 2014-01-01
    “…Using sparse principal component analysis (Sparse PCA), we further identified those pairs of metabolites that significantly contribute to the separation. …”
    Get full text
    Article
  8. 588

    Correlates and predictors of homonegativity among Mexican medical students by José Moral de Rubia, Adrián Valle de la O

    Published 2019-09-01
    “…Results: The sample was composed of 202 volunteer participants, who were studying at a private medical school in Monterrey, Mexico. A principal component analysis was performed with scales of assessment that were correlated with HN-16 total score, and yielded three components: masculinity-harshness-externality, religiosity-conservatism, and homosexuality-chivalry-honesty. …”
    Get full text
    Article
  9. 589

    Budowa i proporcje ciała warszawskiej młodzieży gimnazjalnej by Joanna Grzelak, Joanna Nieczuja-Dwojacka, Anna Siniarska, Ewa Samul

    Published 2015-09-01
    “…The living conditions were reduced by principal component analysis to three factors (family size, living conditions, environmental stress). …”
    Get full text
    Article
  10. 590

    Chemical Differentiation and Quantitative Analysis of Different Types of Panax Genus Stem-Leaf Based on a UPLC-Q-Exactive Orbitrap/MS Combined with Multivariate Statistical Analysi... by Lele Li, Yang Wang, Yang Xiu, Shuying Liu

    Published 2018-01-01
    “…By means of −ESI PRM MS method, the contents of eighteen ginsenosides in Asian ginseng stem-leaf (ASGSL) and American ginseng stem-leaf (AMGSL) were analyzed. The principal component analysis (PCA) model was built to discriminate Asian ginseng stem-leaf (ASGSL) from American ginseng stem-leaf (AMGSL) based on −ESI PRM MS data, and six ginsenosides (F11, Rf, R2, F1, Rb1, and Rb3) were obtained as the markers. …”
    Get full text
    Article
  11. 591

    Analysis of Regional Economic Development Differences Based on Intelligent Hybrid Algorithm by Yanyan Li

    Published 2021-01-01
    “…On the basis of summarizing and analyzing previous research works, this paper expounded the research status and significance of regional economic development differences analysis, elaborated the development background, current status, and future challenges of intelligent hybrid algorithms, introduced the methods and principles of principal component distance weighting algorithm and sequential quadratic programming algorithm, constructed a basic model for regional economic development differences based on intelligent hybrid algorithm, conducted the construction of analysis index system and the hybrid of intelligence algorithm, analyzed the regional economic development differences based on intelligent hybrid algorithm, performed the principal component analysis and time-space change analysis of regional economic development, and finally carried out a simulation experiment and its result analysis. …”
    Get full text
    Article
  12. 592

    Breaking the Barriers for Women Participation in Agroforestry in the Context of AfCFTA by Patrick Opoku, Awonlimali Kenneth Ali, Peter Ampadu-Daaduam, Dorothy Asare Akoto

    Published 2025-01-01
    “…Exploratory factor analysis involving principal component analysis was used for the data analysis. …”
    Get full text
    Article
  13. 593

    Learning model combined with data clustering and dimensionality reduction for short-term electricity load forecasting by Hyun-Jung Bae, Jong-Seong Park, Ji-hyeok Choi, Hyuk-Yoon Kwon

    Published 2025-01-01
    “…Here, we adapt k-means clustering for data clustering, kernel principal component analysis (kernel PCA), universal manifold approximation and projection (UMAP), and t-stochastic nearest neighbor (t-SNE) for dimensionality reduction. …”
    Get full text
    Article
  14. 594

    Alterations of Serum Bile Acid Profile in Patients with Crohn’s Disease by Rui Sun, Jingjing Jiang, Ling Yang, Lu Chen, Hong Chen

    Published 2022-01-01
    “…The DCA/(DCA + CA) ratio was also decreased in CD active patients than in CD remission patients while the LCA/(LCA + CDCA) ratio showed no difference between them. Principal component analysis also indicated a clear separation among the three groups, with a total variance of 93.43%. …”
    Get full text
    Article
  15. 595

    Credit Risk Assessment of Small and Medium-Sized Enterprises under the Financial Model of Online Supply Chain by Shengli Chen, Dong Wang, Zheng Wan

    Published 2022-01-01
    “…An online supply chain financial credit risk evaluation model for the different industries was then constructed using principal component analysis (PCA) and logistic regression methods. …”
    Get full text
    Article
  16. 596

    Financial factors influencing investment willingness in environment-friendly business: Empirical study on an emerging economy by Fairtown Zhou Ayoungman, Md. Shoriful Islam, Mohammad Masukujjaman, Abid Hossain Shawon, Abdullah Al Mahmud

    Published 2025-02-01
    “…The study included 150 corporate executives who are closely involved in investment decisions within their respective organizations. Principal component analysis was used to identify financial influences, and a linear regression model was used to build relationships using SPSS. …”
    Get full text
    Article
  17. 597

    Evaluation of the DWT-PCA/SVD Recognition Algorithm on Reconstructed Frontal Face Images by Louis Asiedu, Bernard O. Essah, Samuel Iddi, K. Doku-Amponsah, Felix O. Mettle

    Published 2021-01-01
    “…This study assessed the performance of the principal component analysis and singular value decomposition algorithm using discrete wavelet transform (DWT-PCA/SVD) as preprocessing mechanism on the reconstructed face image database. …”
    Get full text
    Article
  18. 598

    Identification of Main Driving Factors of Water Resources Carrying Capacity in Taiyuan City by DING Xiangyi, SHI Xiaolin, WANG Xiangqian, MEI Chao

    Published 2022-01-01
    “…Utilizing the existing evaluation results of the water resources carrying capacity of Taiyuan City,this paper qualitatively analyzed its driving factors of the city,which was based on the analysis of the critical overload/overloading causes of various dimensions including quantity,quality,domain and flow and the consideration of the current situation of water resources in Taiyuan City.The paper also quantitatively identified the driving factors influencing the water resources carrying capacity of Taiyuan City with a combination weighting method of principal component analysis,analytic hierarchy process and entropy weight method.Further,making full use of the respective advantages of qualitative analysis and quantitative identification of driving factors,the paper took the common influencing factors as the main driving factors of the water resources carrying capacity of Taiyuan City.The results indicated that the main driving factors influencing the various dimensions of water resources carrying capacity in the city included the followings:①water quantity dimension:precipitation,per capita water resources,ratio of imported water to consumed water,groundwater extraction coefficient,coefficient of effective utilization of farmland irrigation water,water consumption per 10 000 yuan of industrial added value and wastewater utilization rate;②water quality dimension:water quality compliance rate of water function zone,proportion of water quality inferior to Grade V;③water domain dimension:soil erosion control rate;④water flow dimension:proportion of river ecological water replenishment.The research results can provide references for the plan formulation of improving water resources carrying capacity in Taiyuan City.…”
    Get full text
    Article
  19. 599

    PENINGKATAN PERFORMA DETEKSI SERANGAN MENGGUNAKAN METODE PCA DAN RANDOM FOREST by Eko Arip Winanto, Yudi Novianto, Sharipuddin Sharipuddin, Ibnu Sani Wijaya, Pareza Alam Jusia

    Published 2024-08-01
    “…Salah satu karakteristik dari metode Random Forest adalah kemampuannya dalam mengatasi masalah overfitting dan kualitas prediksi yang baik. Principal Component Analysis (PCA) adalah teknik statistik yang digunakan untuk mengurangi dimensi data dengan memproyeksikannya ke ruang fitur yang lebih rendah. …”
    Get full text
    Article
  20. 600

    Motion Intention Analysis-Based Coordinated Control for Amputee-Prosthesis Interaction by Fei Wang, Shiguang Wen, Chengdong Wu, Yuzhong Zhang, Jincheng Li

    Published 2010-01-01
    “…By employing principal component analysis, the measured angular velocities were processed and the motion synergy was obtained in the final. …”
    Get full text
    Article