Showing 14,501 - 14,520 results of 18,849 for search 'sample random sampling.', query time: 0.27s Refine Results
  1. 14501

    Estimation of the air conditioning energy consumption of a classroom using machine learning in a tropical climate by Liliana Ortega-Diaz, Julian Jaramillo-Ibarra, German Osma-Pinto

    Published 2025-05-01
    “…Six study scenarios were considered, in which the monitoring period varied, influencing the number of samples. In addition, two sensitivity analyses were performed by modifying the time interval of the data (1, 5, 10, 20, 30, and 60 min) and the data split (50:50, 60:40, 70:30, 80:20 and 90:10). …”
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  2. 14502

    Using geographic information systems and remote sensing technique to classify land cover types and predict grassland bird abundance and distribution in Nairobi National Park, Kenya by Frank Juma Ong'ondo, Shrinidhi Ambinakudige, Philista Adhiambo Malaki, Peter Njoroge, Hafez Ahmad

    Published 2025-03-01
    “…We tested the second hypothesis using KBM data. Training samples for various land cover types were collected and used to train a Random Forest (RF) classifier on Sentinel-2B imagery. …”
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  3. 14503

    Prediction of the risk of 3-year chronic kidney disease among elderly people: a community-based cohort study by Tao Wang, Zhitong Zhou, Longbing Ren, Zhiping Shen, Jue Li, Lijuan Zhang

    Published 2024-12-01
    “…Objective We conducted a community-based cohort study to predict the 3-year occurrence of chronic kidney disease (CKD) among population aged ≥60 years.Method Participants were selected from two communities through randomized cluster sampling in Jiading District of Shanghai, China. …”
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  4. 14504

    Augmented Anterior Inferior Tibiofibular Ligament Repair in Ankle Fractures and the Postoperative Effect on 3D Syndesmotic Volumes by Blake Moore MD, Ashley Suttmiller

    Published 2025-03-01
    “…Methods: Twenty patients with syndesmotic injuries participated in our randomized clinical pilot study. Participants were blinded and randomly assigned into TR (n=11; 50.5±13.3yrs) or TR+AITFL (n=9; 55.9±19.3yrs) groups. …”
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  5. 14505

    Antioxidant Activity of Mixed Katuk Leaf Extract and Honey by Ahmad Fathoni, La Ode Sumarlin, Jane Ratini Putri, Narti Fitriana

    Published 2020-07-01
    “…This study aims to analyze the levels of total phenolic, flavonoids, vitamin C, antioxidant activity, the effect of different compositions on combination treatments, and analyze the relationship between phenolic levels and vitamin C with antioxidant activity from the test sample. This study used an experimental method with a completely randomized design. …”
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  6. 14506

    Filter Paper Inspired Zinc Oxide Nanomaterials with High Photocatalytic Activity for Degradation of Methylene Orange by Huang Liu, Yanhua Zhang, Hongtao Yang, Wei Xiao, Lanlan Sun

    Published 2016-01-01
    “…The results show that the hexagonal wurtzite phase is actually the only crystal phase in the sample and the product faithfully inherits the hierarchical morphology and the complex network structure of the original filter paper, which is composed of many randomly intersecting zinc oxide microfibers and nanosheets with lots of close stacked particles adsorbed on the surface. …”
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  7. 14507

    Maternal stress, cord blood zinc and attention deficit hyperactivity disorder by Nagahide Takahashi, Tomoko Nishimura, Akemi Okumura, Toshiki Iwabuchi, Taeko Harada, Md Shafiur Rahman, Yoko Nomura, Jeffrey H. Newcorn, Kenji J. Tsuchiya

    Published 2025-08-01
    “…We examined this link using large-scale GWAS and molecular analyses across three cohorts: iPSYCH (14,584 ADHD cases and 22,492 controls), FAMHES (n = 1798), and the Hamamatsu Birth Cohort (n = 726). Two-sample Mendelian randomization revealed bidirectional associations between low serum zinc levels and ADHD diagnosis. …”
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  8. 14508

    Comparative Evaluation of Visual and Taste Distraction Techniques using RMS Pictorial Scale in making of Periapical Radiographs by Parimala Tyagi, Shikha Mali, Saumya V Rathi, Nikita Agrawal, Anup Kumar, Jinu M Abraham

    Published 2022-03-01
    “…Materials and methods: This study was an experimental study. The sample size was 60 and they were randomly allocated into group A- No Distraction (<italic>n</italic> = 20), group B- Taste Distraction with the help of the Lollipop method (<italic>n</italic> = 20), and group C- Visual Distraction Method with the help of Projector method (<italic>n</italic> = 20). …”
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  9. 14509

    Long-term impact of different prevalent cropping systems on soil physico-chemical characteristics under subtropical climate conditions of Punjab, Pakistan by Fahad Ali Fayyaz, Irfan Aziz, Muhammad Ansar, Muhammad Akmal, Saud Alamri, Alanoud T. Alfagham, Renata Gamrat, Abdul Qayyum

    Published 2025-01-01
    “…A total of 470 georeferenced soil samples were collected using a random survey approach, and the samples were analyzed for soil texture, pH, electrical conductivity (EC), organic matter percentage (OM), total nitrogen percentage (TN), accessible phosphorus (AvP) (mg kg−1) and extractable potassium (ExK) (mg kg−1). …”
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  10. 14510

    Leveraging Landsat and Google Earth Engine for long-term chlorophyll-a monitoring: A case study of Lake Balaton's water quality by Huan Li, Boglárka Somogyi, Xiaona Chen, Zengliang Luo, Katalin Blix, Sirui Wu, Zheng Duan, Viktor R. Tóth

    Published 2025-12-01
    “…However, the common low-frequent in-situ samplings and ∼ 16-day revisit of Landsat have limited both the quality and applicability of Landsat to Chl-a retrieval. …”
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  11. 14511

    A web-based tool for predicting gastric ulcers in Chinese elderly adults based on machine learning algorithms and noninvasive predictors: A national cross-sectional and cohort stud... by Xingjian Xiao, Xiaohan Yi, Zumin Shi, Zongyuan Ge, Hualing Song, Hailei Zhao, Tiantian Liang, Xinming Yang, Suxian Liu, Bo Sun, Xianglong Xu

    Published 2025-04-01
    “…We employed nine machine learning algorithms to construct predictive models for gastric ulcers over the next seven years (2011–2018, with 1482 samples) and the next three years (2014–2018, with 2659 samples). …”
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  12. 14512

    Comprehensive Analysis of Pathogen Diversity and Diagnostic Biomarkers in Patients with Suspected Pulmonary Tuberculosis Through Metagenomic Next-Generation Sequencing by Li Y, Li C, Fang Y, Zhang L, Ying X, Ren R, Zang Y, Ying D, Zhu S, Liu J, Cao X

    Published 2025-05-01
    “…All BALF samples were sequenced using metagenomic next-generation sequencing (mNGS).Results: A total of 63 pathogens were detected in all samples. …”
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  13. 14513

    Outbreak-driven differences in the microbiome composition and diversity of two cassava whitefly Bemisia tabaci mitotypes SSA1-SG1 and SSA1-SG2 by Hajar El Hamss, Hajar El Hamss, Hadija M. Ally, Hadija M. Ally, Hélène Delatte, Christopher A. Omongo, John Colvin, M. N. Maruthi

    Published 2025-07-01
    “…Outbreaking SSA1-SG1 whiteflies showed the highest microbial richness (mean = 63 ASVs), compared to an overall average of 45 ASVs across all samples. Co-occurrence patterns were highly structured, indicating non-random microbial interactions and shifts. …”
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  14. 14514

    Degradation mechanisms and lifespan prediction of desert sand dry-mixed mortar under sulfate salt wet-dry cycles by Wenxing Zhu, Luping Wang, Dongge Wu, Shan Wang, Yushan Wang, Haifeng Wang, Rui Wang

    Published 2024-12-01
    “…In contrast, DM15, DM20, and DM25 showed the best erosion resistance, with compressive strength retention above 75 % after 120 cycles. Finally, the Wiener random probability distribution was used to predict the remaining life of DSDM samples under different degradation indicators, with flexural strength being the most sensitive indicator. …”
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  15. 14515

    Identification of differentially expressed MiRNA clusters in cervical cancer by S. Sriharikrishnaa, Padacherri Vethil Jishnu, Vinay Koshy Varghese, Vaibhav Shukla, Sandeep Mallya, Sanjiban Chakrabarty, Krishna Sharan, Deeksha Pandey, Shama Prasada Kabekkodu

    Published 2025-02-01
    “…Validation by qRT‒PCR confirmed the downregulation of members of the miR-379/656, namely, hsa-miR-376c-3p (2.8-fold; p-value 0.03), hsa-miR-494-3p (3.4-fold; p-value 0.02), hsa-miR-495-3p (eightfold; p-value 0.01), and hsa-miR-409-3p (fivefold; p-value 0.03), in CSCC samples compared with normal samples. The prognostic model generated via miRNA expression and random forest analysis showed robust sensitivity and specificity (0.88 to 0.92) in predicting overall survival. …”
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  16. 14516

    Enhancing bending strength in continuous drive friction welding of PEEK polymer cylinders through the innovative progressively increased welding area method by Chil-Chyuan Kuo, Hua-Xhin Liang, Song-Hua Huang, Armaan Farooqui, Shih-Feng Tseng

    Published 2024-11-01
    “…In general, the Taguchi method was used to optimize the process parameters of CDFW of dissimilar PEEK round rods to reduce random efforts by the trial-and-error method. It was found that the proposed PIWA method can definitely enhance the bending strength of rotational friction welded samples due to reduction of voids inside the weld interface. …”
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  17. 14517

    Analysis of the role of science and technology park in the economic development of the region (Case study: Pardis Park, Tehran) by Mohsen Saghaei, Ramin Amininejad, Said Ghasemizadeh

    Published 2023-05-01
    “…It is worth mentioning that according to the snowball method, 50% of the statistical population of 40 experts and managers was randomly surveyed so that the sample population was selected. …”
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  18. 14518

    Molecular Prevalence of <i>Leishmania infantum</i> Infection from Oral Swabs Collected from Dogs in Region of Northwestern Spain by Javier Merino-Goyenechea, Elora Valderas-García, Verónica Castilla Gómez de Agüero, Rafael Balaña-Fouce, María Martínez-Valladares

    Published 2025-06-01
    “…This paper presents a prevalence study of <i>L. infantum</i> infection in the province of Zamora (northwestern Spain) using a non-invasive sample from canine buccal swabs and an innovative qPCR method to determine the etiologic agent. …”
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  19. 14519

    Determinants of fall armyworm (Spodoptera frugiperda) control strategies by maize-producing smallholder farmers in Mutasa District, Manicaland Province, Zimbabwe by Witness Sithole, Faustino Madzokere, Freddy Ruzhani, Newettie Jambo, Rutendo Nyamusamba

    Published 2025-12-01
    “…This study explores the various control strategies employed by smallholder farmers in Mutasa District to control pests and the factors influencing their selection. A sample of 158 randomly selected maize smallholder farmers was surveyed using a structured questionnaire, and the data were analysed using frequencies, means and Multivariate Probit Regression. …”
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  20. 14520

    Characterization of the Cicatrization Process in Diabetic Foot Ulcers Based on the Production of Reactive Oxygen Species by Alberto López-Delis, Suélia de S. Rodrigues Fleury Rosa, Paulo Eduardo Narcizo de Souza, Marcella Lemos Brettas Carneiro, Mário Fabrício Fleury Rosa, Yasmin Carneiro Lobo Macedo, Fabiane Hiratsuka Veiga-Souza, Adson Ferreira da Rocha

    Published 2018-01-01
    “…The present study aims at evaluating the correlation between the free radical formation and the healing action of lower limbs’ ulcers in a randomized controlled trial with the use of an adhesive derived from natural latex associated with a light-emitting diode (LED) circuit. …”
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