Showing 2,641 - 2,660 results of 18,849 for search 'sample random sampling.', query time: 0.18s Refine Results
  1. 2641

    Efficacy of a Self-Guided Internet Intervention With Optional On-Demand Feedback Versus Digital Psychoeducation on Sleep Hygiene for University Students With Insomnia: Randomized C... by Anna-Carlotta Zarski, Karina Bernstein, Harald Baumeister, Dirk Lehr, Stella Wernicke, Ann-Marie Küchler, Fanny Kählke, Kai Spiegelhalder, David Daniel Ebert

    Published 2025-05-01
    “…Analyses of covariance were conducted in an intention-to-treat sample. Secondary outcomes included diagnoses of insomnia and major depression, sleep quality, sleep efficiency, worrying, recovery experiences, recovery activities, presenteeism, procrastination, cognitive irritation, and recuperation in sleep. …”
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  2. 2642

    Effects of 10 Weeks of Walking With Mobile Step-Tracking Apps on Body Composition, Fitness, and Psychological State in Adolescents Who Are Overweight and Obese: Randomized Controll... by Adrián Mateo-Orcajada, Cristina M Ponce-Ramírez, Lucía Abenza-Cano, Raquel Vaquero-Cristóbal

    Published 2024-12-01
    “…MethodsThe study was based on a randomized controlled trial with an initial sample of 50 adolescents aged between 12 and 16 years (from the first to the fourth years of compulsory secondary education), whose body composition, physical activity level, physical condition, and psychological state were measured. …”
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  3. 2643
  4. 2644

    Vine yield estimation from block to regional scale employing remote sensing, weather, and management data by Pedro C. Towers, Sean E. Roulet, Carlos Poblete-Echeverría

    Published 2025-06-01
    “…Remote sensing combined with other data that excludes field sampling appears as an optimal approach for yield estimation for a broad range of scales. …”
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  5. 2645
  6. 2646

    Causal Relationships Between Abdominal Obesity, Type 2 Diabetes, Fasting Insulin, and Cervical Disc Disorders, Osteoporosis, and Rheumatoid Arthritis: A Mendelian Randomization Stu... by Tang H, Zhao J, Yan X, Zheng Z, Bai W, Tang Z, Liu X

    Published 2025-08-01
    “…This study utilized Mendelian randomization (MR) to investigate the causal effects of abdominal obesity, T2D, and fasting insulin (FI) on cervical disc disorders, osteoporosis (OP), and rheumatoid arthritis (RA).Methods: Exposure data were sourced from genome-wide association studies (GWAS) for waist-hip ratio (WHR), body mass index (BMI), FI, and T2D with a sample size of 697,734 participants for WHR, 151,013 for BMI, and 62,892 cases with 596,424 controls for FI and T2D. …”
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  7. 2647

    Evaluation of Feature Selection and Regression Models to Predict Biomass of Sweet Basil by Using Drone and Satellite Imagery by Luana Centorame, Nicolò La Porta, Michela Papandrea, Adriano Mancini, Ester Foppa Pedretti

    Published 2025-05-01
    “…This study is among the first to combine multispectral data from both a drone equipped with Altum-PT camera and PlanetScope satellite imagery to predict fresh biomass in sweet basil grown in an open field, demonstrating the added value of integrating different spatial scales. A dataset of 40 sampling points was built by combining remote sensing data with field measurements, and seven vegetation indices were calculated for each point. …”
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  8. 2648

    Integrating pyramid vision transformer and topological data analysis for brain tumor by Dhananjay Joshi, Bhupesh Kumar Singh, Kapil Kumar Nagwanshi, Nitin S. Choubey

    Published 2025-04-01
    “…The approach also incorporates an adaptive sampling rate with hierarchical dynamic position embeddings for context-aware multi-scale feature extraction. …”
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  9. 2649

    The Impact of China’s Environmental Protection Tax on Regional Economic Effects by Е Чэнхао, Игорь Анатольевич Майбуров, Wang Ying

    Published 2024-12-01
    “…The study analyses four key variables—environmental protection tax revenue, regional industrial output value, regional GDP, and regional industrial pollution control investment—from 31 regions in China between 2018 and 2022, forming a sample of 30 observations. A random effects model is constructed and empirically analysed using Python 3.12. …”
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  10. 2650

    Clonal hematopoiesis of indeterminate potential and type 2 diabetes mellitus among patients with STEMI: from a prospective cohort study combing bidirectional Mendelian randomizatio... by Xiaoxiao Zhao, Jiannan Li, Shaodi Yan, Yu Tan, Runzhen Chen, Nan Li, Jinying Zhou, Chen Liu, Peng Zhou, Yi Chen, Hongbing Yan, Hanjun Zhao, Li Song

    Published 2025-01-01
    “…The association between CHIP and T2DM was evaluated by the comparison of (i) the prevalence of CHIP mutations among individuals with diabetes versus those without, (ii) the clinical characteristics delineated by CHIP mutations within the cohort of diabetic patients and (iii) the prognostic significance and correlation of CHIP mutations with mortality rates in T2DM subjects. Furthermore, a two-sample bidirectional Mendelian randomization study was performed using genetic instruments from the genome-wide association study for TET2 mutation CH from the UK Biobank (UKB) (2041 cases,173,918 controls) to investigate the causal relationship with T2DM from the FinnGen consortium (65,085 cases and 335,112 controls), and vice versa. …”
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  11. 2651
  12. 2652

    Predicting HIV self-testing intentions among Chinese college students: a dual-model analysis integrating health belief constructs and machine learning prioritization by Yan Jiang, Jing Li, Jing Li, Jingfen Lu, Liping He, Lin Hu, Jiazhen He, Xianli Huang, Yuchao Li

    Published 2025-07-01
    “…This study aims to fill this gap by exploring the determinants of HIVST willingness among college students using the Health Belief Model (HBM) and random forest analytics.MethodsThis cross-sectional study employed stratified cluster sampling to recruit 1,015 undergraduates from Xiangnan College (July-August 2022), The Health Belief Model (HBM) was synthesized with random forest analytics to elucidate determinants of HIVST willingness. …”
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  13. 2653

    Landscape and climatic factors shaping mosquito abundance and species composition in southern Spain: A machine learning approach to the study of vector ecology by Martina Ferraguti, Sergio Magallanes, Carlos Mora-Rubio, Daniel Bravo-Barriga, Florentino de Lope, Alfonso Marzal

    Published 2024-12-01
    “…Extremely high temperatures correlated with a decrease in mosquito abundance, while accumulated rainfall in the three weeks preceding sampling positively impacted mosquito abundance by providing breeding habitats. …”
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  14. 2654
  15. 2655

    Adulteration detection in cactus seed oil: Integrating analytical chemistry and machine learning approaches by Said El Harkaoui, Cristina Ortiz Cruz, Aaron Roggenland, Micha Schneider, Sascha Rohn, Stephan Drusch, Bertrand Matthäus

    Published 2025-01-01
    “…The MC-simulated data were then used to simulate larger datasets, a critical step for training and testing two classification models: Random Forest (RF) and Neural Networks (NN), as robust training cannot be achieved with small sample sizes. …”
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  16. 2656

    Predicting IDH and 1p/19q molecular status of gliomas with multi-b values DWI by Shanshan Zhao, Peipei Wang, Eryuan Gao, Mengzhu Wang, Guang Yang, Shouhui Niu, Mengjiao Pan, Kai Zhao, Jingliang Cheng, Xiaoyue Ma

    Published 2025-07-01
    “…An independent sample t-test or Mann-Whitney U test was used for comparisons between different subtypes of glioma. …”
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  17. 2657
  18. 2658

    Comparison of the efficacy of the multimodal serotonergic antidepressants trazodone and vortioxetine in the treatment of patients with endogenous depression: A meta-analysis of dou... by D. S. Danilov

    Published 2017-03-01
    “…The trials were divided into 2 groups according to the comparability of original samples of patients, methods for evaluating their state, and duration of follow-up. …”
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  19. 2659
  20. 2660

    Performance Analysis of NaOH-Treated Randomly Oriented Bauhinia Purpurea L Fiber/Epoxy (BPFE) Composites: Mechanical and Free Vibration Studies for Biomedical Applications by G. Rajeshkumar, V. Vignesh, A. M. Arun Mohan, S. V. Naren Prasaadh, A. Poovarasan, Muhammad Imam Ammarullah

    Published 2025-12-01
    “…NaOH treatment was performed to modify the surface of BPFs, and treated samples with varying concentrations (5%, 10%, 15%, and 20%) were individually used for composite fabrication. …”
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