Showing 1,541 - 1,556 results of 1,556 for search '(variable OR variables) model composition', query time: 0.17s Refine Results
  1. 1541

    Identifying and Validating Indicators of Ritualism in the Iranian Higher Education System: A Mixed-Methods Study by Seyed Hedayat Davarpanah, Reza Hoveida, Mostafa Bagherian Far

    Published 2025-06-01
    “…Data analysis was performed concurrently with data collection, employing thematic analysis to interpret the findings. Given the variability in methods used in thematic analysis and the diverse perspectives of the experts, multiple titles and classifications for themes emerged. …”
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    Article
  2. 1542

    Petrology and Geochemistry of the Aroud Granitoid Pluton, North of Alam Kuh, Central Western Alborz by Shadi Noori KHeymehsari, Nematollah Rashidnejad Omran, Mohammadreza Ghorbani, Huai-jen yang

    Published 2024-12-01
    “…Magmatic differentiation, water fugacity, decompression, fluid activity, and metasomatism are inferred as the primary factors influencing textural variability. Whole-rock and mineral chemistry data classify the Aroud samples within the shoshonitic series. …”
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  3. 1543

    Solar irradiance measurements by Greg Kopp

    Published 2025-07-01
    “…Knowledge of solar variability on timescales longer than the current multi-decadal space-borne record relies on solar-activity proxies and models, which indicate similar-magnitude changes over centuries. …”
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  4. 1544

    The impact of investor sentiment on sectoral returns and volatility: Evidence from the Johannesburg stock exchange by Hilary Tinotenda Muguto, Lorraine Muguto, Azra Bhayat, Hawaa Ncalane, Kara Jasmine Jack, Saadia Abdullah, Thabile Siphesihle Nkosi, Paul-Francois Muzindutsi

    Published 2022-12-01
    “…This study investigated the impact of investor sentiment impact on sectoral returns and their volatility on the Johannesburg Stock Exchange using a proxy-based composite investor sentiment index and generalised autoregressive conditional heteroscedasticity models. …”
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    Article
  5. 1545

    Preliminary Design of a Tandem-Wing Unmanned Aerial System by Alejandro Sanchez-Carmona, Daniel del Río Velilla, Antonio Fernández López, Cristina Cuerno-Rejado

    Published 2025-04-01
    “…Manufacturing was carried out by combining new techniques for the use of composite materials with additive manufacturing. A wide variability in the results was identified across the different models used. …”
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  6. 1546

    OrthoKnow-SP: A Large-Scale Dataset on Orthographic Knowledge and Spelling Decisions in Spanish Adults by Jon Andoni Duñabeitia

    Published 2025-06-01
    “…Results show robust variability across items and individuals, with item-level metrics closely aligned with independent norms of word prevalence. …”
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  7. 1547
  8. 1548

    Environmental microbial reservoir influences the bacterial communities associated with Hydra oligactis by Jay Bathia, Máté Miklós, István Gyulai, Sebastian Fraune, Jácint Tökölyi

    Published 2024-12-01
    “…Abstract The objective to study the influence of microbiome on host fitness is frequently constrained by spatial and temporal variability of microbial communities. In particular, the environment serves as a dynamic reservoir of microbes that provides potential colonizers for animal microbiomes. …”
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  9. 1549

    Geochemical exploration of rare earth element resources in highland karstic bauxite deposits in the Sierra de Bahoruco, Pedernales Province, Southwestern Dominican Republic. by Mark Chappell, Harold Rojas, Charles Andros, Autumn Acree, Yoko Masue-Slowey, Christine Young, Paige Fowler, Elizabeth Lotufo, Wesley Rowland, Michelle Wynter, Marcelo Salles, Leopoldo Gonzalez

    Published 2025-01-01
    “…Surface and subsurface soil samples were analyzed using portable X-ray fluorescence (pXRF) and a NixPro 2 color sensor validated with inductively coupled plasma optical emission spectrometry (ICP-OES). We employed compositional data analysis (CoDA) and machine learning models to estimate total REE concentrations, demonstrating that pXRF and the color sensor, when properly calibrated, are effective tools for remote geochemical exploration. …”
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  10. 1550

    Fluid‐Mediated Mass Transfer Between Mafic and Ultramafic Rocks in Subduction Zones by E. A. Codillo, F. Klein, B. Dragovic, H. R. Marschall, E. Baxter, M. Scambelluri, E. Schwarzenbach‬

    Published 2022-08-01
    “…We integrated constraints from bulk‐rock geochemical compositions and petrophysical properties, mineral chemistry, and thermodynamic modeling to understand the formation of reaction zones between juxtaposed metagabbro and serpentinite as exemplified by the Voltri Massif (Ligurian Alps, Italy). …”
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  11. 1551

    Production of prototype lab-scale oak barrel analogues using additive manufacturing by Hugh Holds, Kerry Wilkinson, David Jeffery, Frances Jack, Sue Bastian

    Published 2025-01-01
    “… Experiments involving the maturation of wine or spirits in oak barrels are economically challenging to undertake, especially when there is a need for extensive replication to account for the compositional variability of oak wood. Barrel maturation is also difficult to emulate at a laboratory scale due to the significant increase in surface-area to volume ratio when working with smaller barrel formats. …”
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  12. 1552

    From fragmented to integrated: Advancing surface water quality assessment through WQPI in the upper Medjerda River, Northeastern Algeria by Benacherine Mostefa, Lyazid Mohamed Nadjib, Allaoua Noua, Soualah Alila Hana, Satour Abd El Latif, Chouiter Norhane, Debassi Bouchra, Zineb Chetouh, Md Galal Uddin

    Published 2025-07-01
    “…In this study, we evaluated the surface water quality of the upper Medjerda River in northeastern Algeria by integrating traditional indices, the Organic Pollution Index (OPI) and the Weighted Arithmetic Water Quality Index (WA_WQI), with advanced multivariate analyses including Principal Component Analysis (PCA) and Generalized Linear Models (GLMs). To overcome the limitations of conventional methods, we developed a new composite metric, the Water Quality Pollution Index (WQPI), synthesizing both general physicochemical conditions and organic pollution. …”
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  13. 1553

    Evaluation of Internal Adaptation of Different CAD/CAM Endocrown Materials: A Comparative Microcomputed Tomography Study by Wala Saad, Abdul Rahman Saleh, Manal Almaslamani

    Published 2025-03-01
    “…Conclusion: While no significant differences were observed in internal adaptations among the various endocrown materials, substantial intra-group variability, particularly in terms of pulpal floor thickness, was evident. …”
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  14. 1554

    Early detection to improve outcome in people with undiagnosed psoriatic arthritis: the PROMPT research programme including RCT by Neil McHugh, Laura Bojke, Mel Brooke Turfrey, Rachel Charlton, Myka Ransom, Laura C Coates, Howard Collier, Claire Davies, Emma Dures, Philip Helliwell, Jana James, Anya Lissina, Vishnu B Madhok, Alison L Nightingale, Jonathan Packham, Catherine Smith, Eldon Spackman, Cerys Tassinari, William Tillett, Sarah T Brown

    Published 2025-06-01
    “…A pain visual analogue scale (VAS) and Functional Assessment of Chronic Illness Therapy-Fatigue instrument (chosen from PROMS) were added as modifications to the Composite Psoriatic Disease Activity Index (CPDAI) and the GRAppa Composite Exercise (GRACE) composite measures. …”
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  15. 1555

    Predicting neurodevelopmental outcomes from neonatal cortical microstructure: A conceptual replication study by Andrea Gondová, Sara Neumane, Yann Leprince, Jean-François Mangin, Tomoki Arichi, Jessica Dubois

    Published 2023-06-01
    “…This allowed us to evaluate whether some limitations of the original study (mainly small sample size and limited variability in the input and output features used in the predictive models) would influence the prediction results. …”
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  16. 1556

    Direct measurement of N<sub>2</sub>O<sub>5</sub> heterogeneous uptake coefficients on atmospheric aerosols in southwestern China and evaluation of current parameterizations by J. Li, T. Zhai, T. Zhai, X. Chen, H. Wang, S. Xie, S. Chen, C. Li, C. Li, Y. Gong, H. Dong, K. Lu

    Published 2025-06-01
    “…We found that several parameterizations can capture the median of measured values, whereas none of the 10 parameterizations were able to reproduce the variabilities and showed poor correlations (<span class="inline-formula"><i>R</i><sup>2</sup>=0.00</span>–0.09). …”
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