Showing 6,661 - 6,680 results of 13,904 for search '"estimator"', query time: 0.09s Refine Results
  1. 6661

    Identification of the primary pollution sources and dominant influencing factors of soil heavy metals using a random forest model optimized by genetic algorithm coupled with geodet... by Tong Liu, Mingshi Wang, Mingya Wang, Qinqing Xiong, Luhao Jia, Wanqi Ma, Shaobo Sui, Wei Wu, Xiaoming Guo

    Published 2025-01-01
    “…Unlike traditional source apportionment methods, the GA-RF model effectively quantified the contributions of specific influencing factors (e.g., factory density) to pollution sources, rather than merely estimating the percentage contributions of the sources themselves. …”
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  2. 6662

    Hypokalaemia and outcomes in older patients hospitalized for heart failure by Miroslava Valentova, Samir Patel, Phillip H. Lam, Charles Faselis, Cherinne Arundel, Gregg C. Fonarow, Yan Cheng, Richard M. Allman, Stephan vonHaehling, Stefan D. Anker, Ali Ahmed

    Published 2020-06-01
    “…Hazard ratios (HR) and 95% confidence intervals (CIs) associated with hypokalaemia were estimated in matched cohorts. 30 day all‐cause mortality occurred in 5% and 4% of patients with consistent normokalaemia vs. consistent hypokalaemia, respectively (HR, 0.78; 95% CI, 0.52–1.18; P = 0.241). …”
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  3. 6663

    Physically based modelling of glacier evolution under climate change in the tropical Andes by J. D. Mackay, J. D. Mackay, N. E. Barrand, D. M. Hannah, E. Potter, E. Potter, N. Montoya, W. Buytaert

    Published 2025-02-01
    “…The ensemble mean simulation estimates that total glacier mass will decrease to 17 % and 6 % of that in 2000 by 2100 for Representative Concentration Pathway (RCP) 4.5 and RCP8.5, respectively, which is more conservative than estimates from some other global glacier models.…”
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  4. 6664

    Chronic kidney disease progression in patients with previous type 2 diabetes and/or hypertension: a population-based cohort study from primary care in Spain by David Vizcaya, Betlem Salvador-González, Oriol Cunillera-Puértolas, Sílvia Cobo-Guerrero, José Romano-Sánchez, Daniel Bundó-Luque, Ariadna Arbiol-Roca

    Published 2025-01-01
    “…Distribution of the CKD study cohort was as follows: CKD with hypertension (51.1%), CKD with T2D (3.9%), CKD with hypertension and T2D (32.8%), CKD without hypertension and T2D (12.2%).Primary and secondary outcome measures Patients were followed up to identify the occurrence of severe kidney impairment (SKI) and kidney failure (kidney replacement therapy/estimated glomerular filtration rate (eGFR) <15 mL/min/1.73 m2). …”
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  5. 6665

    The benefits and trade-offs of multi-variable calibration of the WaterGAP global hydrological model (WGHM) in the Ganges and Brahmaputra basins by H. M. M. Hasan, P. Döll, P. Döll, S.-M. Hosseini-Moghari, F. Papa, A. Güntner, A. Güntner

    Published 2025-01-01
    “…Pareto-dominance-based multi-objective calibration, often referred to as Pareto-optimal calibration (POC), may serve to estimate model parameter sets and analyse trade-offs among different objectives during calibration. …”
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  6. 6666

    The Global Burden of Polycystic Ovary Syndrome in Women of Reproductive Age: Findings from the GBD 2019 Study by Jiang B

    Published 2025-01-01
    “…To analyze trends, ASRs and estimated annual percentage changes (EAPCs) were calculated, with standardization crucial for comparability. …”
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  7. 6667

    A Novel Inertial-Aided Star Pattern Matching Method for Distributed Multiple FoVs by Rong Wang, Yuxuan Cao, Jianye Liu, Zhi Xiong

    Published 2020-01-01
    “…Next, an LoS vector estimation method assisted by inertial information and the dynamic establishment of a distributed local catalog are proposed. …”
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  8. 6668

    WH-EA: An Evolutionary Algorithm for Wiener-Hammerstein System Identification by J. Zambrano, J. Sanchis, J. M. Herrero, M. Martínez

    Published 2018-01-01
    “…Furthermore, to correct possible errors in BLA estimation, the locations of poles and zeros are subtly modified within an adequate search space to allow a fine-tuning of the model. …”
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  9. 6669

    Method of multilayer object sectioning based on a light scattering model by S.D. Bazhitov, A.V. Larichev, A.V. Razgulin, T.E. Romanenko

    Published 2023-10-01
    “…We propose a method of "Boundary separation" of sectioning, which combines the use of a physical blur model with modern methods of blur estimating and edge detection. The results of testing the "Boundary separation" method on the data of physical experiments with different-scale model multilayer objects are analyzed and compared with the existing methods for solving the optical sectioning problem. …”
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  10. 6670

    From skin to heart: The rare journey of pleomorphic dermal sarcoma metastasis by Maria Gabriela Matta, MD MSc, Dipesh Raniga, MD, Vinicius Carraro do Nascimento, MD, Gayle Therese Hill, BSc, Mohamed Nasser Essack, MD, Ian Agahari, MD

    Published 2025-03-01
    “…Pleomorphic dermal sarcoma (PDS) is a rare skin neoplasm, with an estimated metastatic risk of 10% to 20%. This report presents the case of a 52-year-old male who, after a history of PDS, developed cardiac metastasis 4 years postexcision. …”
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  11. 6671

    Separable and Error-Free Reversible Data Hiding in Encrypted Image with High Payload by Zhaoxia Yin, Bin Luo, Wien Hong

    Published 2014-01-01
    “…The data hider preprocesses the encrypted image and randomly selects two basic pixels in each block to estimate the block smoothness and indicate peak points. …”
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  12. 6672

    Semianalytical Fokker–Planck Models for Nuclear Star Clusters by Karamveer Kaur, Barak Rom, Re’em Sari

    Published 2025-01-01
    “…This improves the rate estimates for extreme-mass ratio inspirals, and has interesting implications for a new class of galactic center transients called quasiperiodic eruptions.…”
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  13. 6673

    Robust Predictive Functional Control for Flight Vehicles Based on Nonlinear Disturbance Observer by Yinhui Zhang, Huabo Yang, Zhenyu Jiang, Fan Hu, Weihua Zhang

    Published 2015-01-01
    “…As the lumped disturbances cannot be derived or measured directly, the nonlinear disturbance observer is applied to estimate the lumped disturbances, which are then introduced to the predictive functional control to replace the unknown actual lumped disturbances. …”
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  14. 6674

    Determination of the activity of alpha naphthyl acetate esterase and acid phosphatase of peripheral blood lymphocytes in healty pregnant cattle by Emrah Sur, İbrahim Aydın, Yasemin Öznurlu, Tuğba Telatar

    “…Peripheral blood lymphocyte percentages were also estimated. These animals divided into four groups as Control; Trimester I; Trimester II and Trimester III (n= 20 for each group). …”
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  15. 6675

    On the Geological and Palaeontological Heritage of the Azores Archipelago and the Urgent need to Review the Geosites of the Azores UNESCO Geopark: A Comment on Lima & Meneses (2023... by Sérgio P. Ávila, Ana Hipólito, Patrícia Madeira, Lara Baptista, Samuel Arruda, Gonçalo Castela Ávila, Carlos Góis-Marques, Rui Quartau

    Published 2023-12-01
    “…In our commentary, we focus mainly on the use of older bibliographic sources and inaccurate age estimates for some islands, as well as the absence of important references, which results in a poor revision of the published literature on the geology and paleontology of the Azores Archipelago. …”
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  16. 6676

    Delayed population models with Allee effects and exploitation by Eduardo Liz, Alfonso Ruiz-Herrera

    Published 2014-11-01
    “…Using a delay-differential equation modeling the evolution of a single-species population subject to constant effort harvesting, we show that the interplay between harvest strength and Allee effects leads not only to collapses due to overexploitation; large delays can interact with Allee effects to produce extinction at population densities that would survive for smaller time delays.In case of bistability, our estimations on the basins of attraction of the two coexisting attractors improve some recent results in this direction. …”
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  17. 6677

    Computing Simple Roots by an Optimal Sixteenth-Order Class by F. Soleymani, S. Shateyi, H. Salmani

    Published 2012-01-01
    “…The class is built by considering any of the optimal three-step derivative-involved methods in the first three steps of a four-step cycle in which the first derivative of the function at the fourth step is estimated by a combination of already known values. …”
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  18. 6678

    Turkmen Students at Volgograd State Technical University by L. F. Belyakova, T. L. Sidorova, R. M. Petruneva, V. D. Vasilyeva

    Published 2020-05-01
    “…The attractiveness of the University in the world market of educational services is an indicator of its success, which is estimated by a set of criteria including the number of foreign students studying there. …”
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  19. 6679

    Quantitative Fourth Moment Theorem of Functions on the Markov Triple and Orthogonal Polynomials by Yoon Tae Kim, Hyun Suk Park

    Published 2021-01-01
    “…Also, we introduce the chaos grade of a new notion, called the lower chaos grade, to find a better estimate than the previous one.…”
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  20. 6680

    Numerical approach to compound quantum repeater scheme with coherent states by I.O. Vorontsova, R.K. Goncharov, D.V. Tupyakov, F.D. Kiselev, V.I. Egorov

    Published 2024-02-01
    “…Namely, we calculate photodetector click probabilities and fidelity for various sets of decoherence parameters. These estimates are necessary in the context of further experimental research at the junction with other branches of quantum communications, so that to use the entanglement distribution when it comes to operating quantum teleportation and quantum key distribution protocols based on entanglement. …”
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