Showing 681 - 700 results of 1,556 for search 'variables model composition', query time: 0.20s Refine Results
  1. 681
  2. 682
  3. 683
  4. 684

    Regional performance variation in external validation of four prediction models for severity of COVID-19 at hospital admission: An observational multi-centre cohort study. by Kristin E Wickstrøm, Valeria Vitelli, Ewan Carr, Aleksander R Holten, Rebecca Bendayan, Andrew H Reiner, Daniel Bean, Tom Searle, Anthony Shek, Zeljko Kraljevic, James Teo, Richard Dobson, Kristian Tonby, Alvaro Köhn-Luque, Erik K Amundsen

    Published 2021-01-01
    “…<h4>Conclusions</h4>The performance of the four prediction models was variable. The Xie model had the best discrimination for mortality, while the Allenbach model had acceptable results for prediction of severe disease.…”
    Get full text
    Article
  5. 685
  6. 686

    Borrowing in modern Russian language: related linguistic processes by Natalia V. Gabdreeva, Anastasia V. Ageeva

    Published 2025-12-01
    “…General and specific characteristics in the formation of phonemic-graphemic appearance of foreign units are presented, including the most common types of variability and their factors. Structural modifications of lexical units in the process of borrowing are analyzed, and this allows us to draw a conclusion about the intensification of hybridization and composition according to the model of analytical languages. …”
    Get full text
    Article
  7. 687

    The Effectiveness of Instruction Based on the Four-Component Instructional Design (4C-ID) Model on Meaningful Learning and Critical Thinking in Sixth-Grade Students of Ardabil by Nader Heidari Raziabad, Vahid Rahimzadeh, Ali Khaleghkhah

    Published 2025-01-01
    “…One class was assigned to be control group and the other to be the experimental group. The independent variable was instruction based on the 4C-ID model, while the dependent variables were meaningful learning and critical thinking. …”
    Get full text
    Article
  8. 688

    Integrating Radiomics and Lesion Mapping for Cerebellar Mutism Syndrome Prediction by Xinyi Chai, Wei Yang, Yingjie Cai, Xiaojiao Peng, Xuemeng Qiu, Miao Ling, Ping Yang, Jiashu Chen, Hong Zhang, Wenping Ma, Xin Ni, Ming Ge

    Published 2025-05-01
    “…<b>Objective:</b> To develop and validate a composite model that combines lesion–symptom mapping (LSM), radiomic information, and clinical factors for predicting cerebellar mutism syndrome in pediatric patients suffering from posterior fossa tumors. …”
    Get full text
    Article
  9. 689
  10. 690

    Media formulation using statistical methodology to enhance α-amylase production for green synthesis of Au-NPs by Bacillus subtilis VSP4 under solid-state fermentation by Vimalkumar S. Prajapati, Vaibhavkumar N. Mehta, Swati K. Patel

    Published 2025-06-01
    “…The F-value of the quadratic model (18.36) implies that the model is significant, while the F-value of the lack of fit (3.17) indicates that the lack of fit is not significant, meaning that the model has good fit. …”
    Get full text
    Article
  11. 691
  12. 692
  13. 693

    The Effects of Land Use Mix on Urban Vitality: A Systemic Conceptualization and Mechanistic Exploration by Yuefei Zhuo, Hangang Hu, Guan Li

    Published 2025-07-01
    “…By integrating multi-source data (Baidu Maps, POI, and OSM) and employing OLS and geographically weighted regression (GWR) models, we unravel these systemic relationships. Key findings include the following: (1) LUM significantly enhances urban vitality, acting as a crucial urban system configuration for both daytime and nighttime activity. (2) The efficacy of LUM stems more from systemic interconnections—convenient access to adjacent spaces (proximity) and functional coordination among diverse land uses—than mere compositional diversity, emphasizing the importance of interrelated elements within the urban fabric. (3) The system’s response to LUM exhibits significant spatial and temporal heterogeneity; proximity’s impact is most variable, while diversity and coordination effects are more stable, underscoring the dynamic and context-dependent nature of these interactions. (4) System-adaptive strategies are crucial: newly developed urban areas benefit from foundational infrastructure and land use diversity (system inputs), while revitalizing older towns requires optimizing spatial accessibility and functional coordination (enhancing existing system linkages). …”
    Get full text
    Article
  14. 694

    Pricing strategies of Online Stores and its influence on Consumers’ buying decision. by Dr. Waqar Ahmad

    Published 2025-06-01
    “…It has a long-term impact on the company's revenue, earnings, and investments, and it is the central variable in its financial models. Pricing reveals how a company thinks and acts in relation to its rivals and the value it provides to its consumers. …”
    Get full text
    Article
  15. 695

    Constitutive Study of Limestone Damage in Karst Areas under Acidic Dry-Wet Cycles by ZHANG Yan, YUAN Pu-long, HUANG Lan-tao

    Published 2025-06-01
    “…By integrating the Weibull distribution function with a composite damage variable, a geometric damage model was established. …”
    Get full text
    Article
  16. 696

    Predicting early diagnosis of intensive care unit-acquired weakness in septic patients using critical ultrasound and biological markers by Ling Lei, Liang He, Tongjuan Zou, Jun Qiu, Yi Li, Ran Zhou, Yao Qin, Wanhong Yin

    Published 2025-01-01
    “…Logistic regression analysis was conducted for variable selection and nomogram model construction. …”
    Get full text
    Article
  17. 697

    Optimization of chlorpheniramine maleate (CPM) delivery by response surface methodology – four component modeling using various response times and concentrations of chitosan-alanin...

    Published 2009-04-01
    “…The release behavior of drug was affected by preparation variables. A central composite design was used to evaluate and optimize the effect of preparation variables; chitosan concentration (X1), percentage of crosslinker (X2), concentration of drug (X3) and release time (X4) on the cumulative amount of drug release, Y in solutions of pH = 2.0 and pH = 7.4, respectively. …”
    Get full text
    Article
  18. 698

    Predictive mathematical modeling of biomechanical behavior in all-on-4 implants design: effects of distal implant and occlusal load angulation using RSM based on FEA by Fahri Murat, Sema Nur Sevinç Gül, Abdullah Tahir Şensoy, Abdullah Tahir Şensoy, Abdullah Tahir Şensoy

    Published 2025-08-01
    “…Finite Element Analysis (FEA) was integrated with Response Surface Methodology (RSM) to develop 15 simulation models based on a Central Composite Design, incorporating distal implant angulations of 15°, 30°, and 45°, and occlusal load directions in both sagittal and frontal planes (45°, 67.5°, and 90°). …”
    Get full text
    Article
  19. 699

    The effect of internal migration on regional growth in Italy: a dynamic spatial panel data analysis by Francesca Centofanti, Roberto Basile, Francesca Licari, Jacopo Pitari

    Published 2024-10-01
    “…The analysis considers this heterogeneity, estimating various specifications of the dynamic spatial model and controlling for the endogeneity of migration variables through a control function approach. …”
    Get full text
    Article
  20. 700

    Response surface optimization of sedimentation efficiency for sustainable green microalgae harvesting using automated non-invasive methods by Amr M. Ayyad, Eladl G. Eltanahy, Mervat H. Hussien, Dina A. Refaay

    Published 2025-07-01
    “…Sealed vessels and smaller culture volumes further enhanced sedimentation efficiency. RSM predictive models achieved high accuracy (adjusted R2 > 99%). …”
    Get full text
    Article