Showing 921 - 940 results of 1,556 for search '(variable OR variables) model composition', query time: 0.16s Refine Results
  1. 921

    Spatial pattern of Trees in the Riparian Forests (Case Study: Wildlife Refuge of Karkhe) by Shaieste Gholami

    Published 2017-02-01
    “…To describe spatial autocorrelation of a variable quantitatively, a (theoretical) variogram model can be fitted to the empirical variogram in order to obtain the model parameters nugget, sill and range. 3- Results and Discussion The variograms of Populus euphratica and Lycium shawii were spherical. …”
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  2. 922

    Merging eDNA and ecological network analysis to assess aquatic ecosystem status by Xusheng Wang, Xiaonan Wang, Shunhao Ai, Fan Wu, Jiayin Xi, Ji Li, Zhengtao Liu

    Published 2025-07-01
    “…A structural equation model was used to further refine the model by reducing the number of evaluation indicators, demonstrating that ecological status is affected by physical and nutrient factors, with biodiversity serving as a mediating variable. …”
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  3. 923

    Multitemporal Sentinel and GEDI data integration for overstory and understory fuel type classification by Pegah Mohammadpour, Domingos Xavier Viegas, Alcides Pereira, Emilio Chuvieco

    Published 2025-05-01
    “…Wildfires significantly reshape the landscape of the Mediterranean basin, altering forest composition, structure, and diversity. Consequently, detailed fuel mapping is crucial for improving fire risk assessment and enhancing fire behavior modeling, as wildfires typically ignite from surface fuels and may spread vertically to canopy fuels due to canopy fuel continuity. …”
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  4. 924

    Biofuel Production in Oleic Acid Hydrodeoxygenation Utilizing a Ni/Tire Rubber Carbon Catalyst and Predicting of n-Alkanes with Box–Behnken and Artificial Neural Networks by Luis A. Sánchez-Olmos, Manuel Sánchez-Cárdenas, Fernando Trejo, Martín Montes Rivera, Ernesto Olvera-Gonzalez, Benito Alexis Hernández Guerrero

    Published 2024-11-01
    “…We developed a dataset with pressure, temperature, metal content, reaction time, and catalyst composition variables as inputs. The output variables are the n-C<sub>17</sub> and n-C<sub>18</sub> alkanes obtained. …”
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  5. 925

    AI-based analysis of fetal growth restriction in a prospective obstetric cohort quantifies compound risks for perinatal morbidity and mortality and identifies previously unrecogniz... by Raquel M. Zimmerman, Edgar J. Hernandez, Mark Yandell, Martin Tristani-Firouzi, Robert M. Silver, William Grobman, David Haas, George Saade, Jonathan Steller, Nathan R. Blue

    Published 2025-01-01
    “…Our objective was to use data from a large, deeply phenotyped observational obstetric cohort to develop a probabilistic graphical model (PGM), a type of “explainable artificial intelligence (AI)”, as a potential framework to better understand how interrelated variables contribute to perinatal morbidity risk in FGR. …”
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  6. 926

    Numerical Mixing Index: Definition and Application on Concrete Mixer by Cristian Ferrari, Nicolò Beccati, Luca Magri

    Published 2025-03-01
    “…In this work, a statistical method is applied to a multiphase CFD simulation of concrete mixing performed in a truck mixer. The numerical model is based on an Eulerian–Eulerian approach in a transient regime. …”
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  7. 927

    Is the real sector structure the determining factor of the financial sector structure of Iran's economy? by Seyedrohollah Ahmadi Hajiabadi

    Published 2022-11-01
    “…In the second step, the long-term and short-term model coefficients were estimated and then using causality test, the causal relationship between the structure of the financial and real sectors was investigated. …”
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  8. 928

    Crustacean zooplankton communities as indicators of game fish occurrence and abundance in Québec lakes by Cindy Paquette, Stéphanie Gagné, Maxime Gaudet-Boulay, Véronique Leclerc, Paschale Noël Bégin, Zofia E. Taranu, Beatrix E. Beisner, Vincent Fugère

    Published 2025-04-01
    “…Our analyses revealed that both taxonomic and functional zooplankton composition were significant predictors of focal fish species occurrence, albeit less so than environmental or fish community composition variables. …”
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  9. 929

    Microbiota and Long-Term Prognosis in Liver Cirrhosis by E. G. Malaeva, I. O. Stoma

    Published 2024-06-01
    “…The analysis of the difference in the proportional composition of the microbiome between the groups was carried out using polynomial Dirichlet modeling (Likelihood-Ratio-Test Statistics: Several Sample Dirichlet-Multinomial Test Comparison), the Mann-Whitney test with preliminary data transformation by CLR transformation (Centered log ratio transform), differential analysis of gene expression based on negative binomial distribution (DESeq2). …”
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  10. 930

    Lactational performance effects of 3-nitrooxypropanol supplementation to dairy cows: A meta-regression by L.F. Martins, M. Maigaard, M. Johansen, P. Lund, X. Ma, M. Niu, A.N. Hristov

    Published 2025-02-01
    “…Full models containing uncorrelated explanatory variables (Pearson correlation <0.50) were fitted, and variables were removed from the final model if nonsignificant using the stepwise selection approach. …”
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  11. 931

    Müller glia activation in response to inherited retinal degeneration is highly varied and disease-specific. by Claire Hippert, Anna B Graca, Amanda C Barber, Emma L West, Alexander J Smith, Robin R Ali, Rachael A Pearson

    Published 2015-01-01
    “…The OLM adherens junctions underwent significant remodelling in all models, but with differences in the composition of the resulting junctions; in Rho-/- mice, the adherens junctions maintained the typical rod-Müller glia interactions, while in the Pde6brd1/rd1 model they formed predominantly between Müller cells in late stage of degeneration. …”
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  12. 932

    Pathways for Potential Exposure to Onshore Oil and Gas Wastewater: What We Need to Know to Protect Human Health by Ayusha Ariana, Isabelle Cozzarelli, Cloelle Danforth, Bonnie McDevitt, Anna Rosofsky, Donna Vorhees

    Published 2025-04-01
    “…Knowledge gaps include understanding the variable composition and toxicity of produced water released to the environment, the performance of treatment methods, migration pathways through the environment that can result in human exposure, and the significance of the exposures for human and ecosystem health. …”
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  13. 933

    Visceral fat, cardiovascular risk factors and quality of life in lupus activity categorised via complement C3 by J Alfredo Martinez, Victor Moreno-Torres, María Martínez-Urbistondo, Raquel Castejón, Susana Mellor-Pita, Andrea Higuera-Gómez, Begoña de Cuevillas, Amanda Cuevas-Sierra, Juan-Antonio Vargas

    Published 2025-05-01
    “…Interestingly, household composition as a sociodemographic variable (alone, couple/children/elderly or other) also showed an independent association with SLE activity.Conclusions Inactive patients with SLE exhibited more adverse cardiovascular risk markers compared with active patients categorised by complement C3, even when glucocorticoid administration was accounted for. …”
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  14. 934

    Experimental Investigation on the 3D Printing of Nylon Reinforced by Carbon Fiber through Fused Filament Fabrication Process, Effects of Extruder Temperature, and Printing Speed by Mahmoud Moradi, Zeinab Malekshahi Beiranvand, Nahid Salimi, Saleh Meiabadi, Jonathan Lawrence

    Published 2024-01-01
    “…This study investigated how the extruder temperature, printing speed, and specimen geometry interact during a tensile test of continuous carbon fiber-reinforced nylon matrix composites produced by the fused deposition modelling (FDM) process. …”
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  15. 935

    Color Variation in 3D-Printed Orthodontic Aligners as a Compliance Indicator: A Prospective Pilot Study by Francesca Cremonini, Giuseppe Chiusolo, Filippo Pepe, Luca Lombardo

    Published 2025-06-01
    “…However, individual variability in saliva composition, diet, and oral hygiene may have influenced the results, highlighting the need for further research into potential confounding variables. …”
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  16. 936

    Development of Theoretical Approaches to Determination of the Main Groups of Biologically Active Substances of Medicinal Plant Raw Materials by TLC Method by O. V. Trineeva

    Published 2021-05-01
    “…As is known, the selection of optimal conditions for the analysis of extracts from medicinal plant raw materials (MPМ), as well as medicinal herbal preparations and pharmaceutical substances of plant origin, characterized by a complex variable composition of biologically active substances (BAS) by TLC, presents certain difficulties. …”
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  17. 937

    Determinants of Sustainability Reporting in the Romanian Banking Sector by Mihaela CUREA, Maria Carmen HUIAN, Marilena MIRONIUC

    Published 2025-05-01
    “…Regression trees facilitate the identification and modeling of non-linear and conditional relationships between variables, enabling the detection of complex interactions that traditional fixed-effects regression models cannot capture. …”
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  18. 938

    Canada goose fecal microbiota correlate with geography more than host‐associated factors by Joshua C. Gil, Heather R. Skeen, Celeste Cuellar, Sarah M. Hird

    Published 2025-05-01
    “…Supervised machine learning models were able to predict the state and flyway of origin of a fecal sample based on bacterial composition alone. …”
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  19. 939

    Optimization of the synthesis of highly pure calcium sulphate from dolomite ore by Isaac Adekunle Joseph, Elijah Olawale Ajala, Amina Ahmed El-Imam, Mary Adejoke Ajala, Comfort Temitope Are, Esther Olubunmi Babatunde

    Published 2025-04-01
    “…A significant quadratic model (P-value = 0.0002, R2 = 0.923) was developed for CaSO4 synthesis. …”
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  20. 940

    Influencing factors and dynamic changes of COVID-19 vaccine hesitancy in China: From the perspective of machine learning analysis by Lei Li, Hui Jing, Yuqi Zhao, Shenghua Wu, Boyu Zhu

    Published 2025-12-01
    “…Based on survey data from China, we employed a Gradient Boosting Decision Tree (GBDT) model and conducted SHAP interpretability analysis. …”
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