Showing 301 - 320 results of 2,557 for search '(functional OR function) gradient', query time: 0.10s Refine Results
  1. 301

    Response of aboveground organs of Woody plants in the Qaidam Basin in China to aridity via functional economic spectra by Siyu Liu, Yiwen Kong, Yue Fan, Yanhong Liu

    Published 2025-03-01
    “…Methods Taking the desert area of Qaidam Basin as the research object, 8 leaf traits and 8 stem traits of 25 dominant woody plants accounting for more than 80% of biomass in 130 sample plots under different aridity gradients were quantitatively analyzed. The functional strategies and economic profiles of aboveground organs of desert plants adapted to arid environment were studied. …”
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  2. 302

    RMIS-Net: a fast medical image segmentation network based on multilayer perceptron by Binbin Zhang, Guoliang Xu, Yiying Xing, Nanjie Li, Deguang Li

    Published 2025-05-01
    “…The network incorporates layer normalization and dropout regularization to ensure training stability, complemented by Gaussian error linear unit (GELU) activation functions for improved non-linear modeling. To further refine segmentation precision, we integrate residual connections for gradient flow optimization, a Dice loss function for class imbalance mitigation, and bilinear interpolation for accurate mask reconstruction. …”
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  3. 303

    Intraspecific Variations in Ecomorphological Functional Traits of Montane Stream-Dwelling Frogs Were Driven by Their Microhabitat Conditions by Xiwen Peng, Da Kang, Guangfeng Chen, Suwen Hu, Zijian Sun, Tian Zhao

    Published 2025-07-01
    “…This study investigated intraspecific variation in ecomorphological traits of three montane stream-dwelling frogs (<i>Quasipaa boulengeri</i>, <i>Amolops sinensis</i>, and <i>Odorrana margaratae</i>) across elevation gradients in Tianping Mountain, China. Using morphological measurements and environmental variables collected from ten transects, we analyzed functional traits related to feeding and locomotion and assessed their associations with microhabitat variables. …”
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  4. 304

    Association between aortic stenosis severity and contractile reserve measured by two-dimensional strain under low-dose dobutamine testing by Banović Marko, Vujisić-Tešić Bosiljka, Kujačić Vuk, Obradović Slobodan, Crkvenac Zdenko, Ostojić Miodrag

    Published 2013-01-01
    “…Two-dimensional strain speckle tracking analysis of myocardial deformation with measurement of peak systolic strain during dobutamine infusion is a feasible and accurate method to determine myocardial longitudinal systolic function and contractile reserve and may contribute to clinical decision making in patients with significant AS.…”
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  5. 305

    Functional Assessment of Rural Counties Under the Production–Living–Ecological Framework: Evidence from Guangdong, China by Hongping Lian, Yuedong Zhang, Xuezhen Xiong, Wenjing Han

    Published 2025-05-01
    “…Living functions continue to decline due to population mobility and imbalanced public services. (2) Structural transformation of rural function types occurred: Weakly integrated counties decreased (2010–2019), dual function type counties (production–ecological and living–ecological) significantly increased, and ecology-dominant counties predominated, highlighting ecological polarization under policy interventions. (3) Functional evolution is driven by terrain gradients, policy regulation, and industrial relocation. …”
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  6. 306

    Machine learning model for differentiating malignant from benign thyroid nodules based on the thyroid function data by Quan Zhou, Lihua Zhang, Nan Xiang, Lele Zhang, Fuqiang Ma, Fengchang Yu, Shenhui Lv, Zhilin Lu, He-Rong Mao

    Published 2025-05-01
    “…Objectives To develop and validate a machine learning (ML) model to differentiate malignant from benign thyroid nodules (TNs) based on the routine data and provide diagnostic assistance for medical professionals.Setting A qualified panel of 1649 patients with TNs from one hospital were stratified by gender, age, free triiodothyronine (FT3), free thyroxine (FT4) and thyroid peroxidase antibody (TPOAB).Participants Thyroid function (TF) data of 1649 patients with TNs were collected in a single centre from January 2018 to June 2022, with a total of 273 males and 1376 females, respectively.Measures Seven popular ML models (Random Forest, Decision Tree, Logistic Regression (LR), K-Neighbours, Gaussian Naive Bayes, Multilayer Perception and Gradient Boosting) were developed to predict malignant and benign TNs, whose performance indicators included area under the curve (AUC), accuracy, recall, precision and F1 score.Results A total of 1649 patients were enrolled in this study, with the median age of 45.15±13.41 years, and the male to female ratio was 1:5.055. …”
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  7. 307
  8. 308

    Murine mesenchymal stem cells exhibit a restricted repertoire of functional chemokine receptors: comparison with human. by Giselle Chamberlain, Karina Wright, Antal Rot, Brian Ashton, Jim Middleton

    Published 2008-08-01
    “…We isolated murine MSCs from the long bones of Balb/c mice by density gradient centrifugation and adherent cell culture. …”
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  9. 309

    Predicting Oncological and Functional Outcomes by Nephrectomy Type for T1 Renal Tumors Using Machine Learning Models by Dongrul Shin, Maisy Song, Jungyo Suh, Cheryn Song

    Published 2025-03-01
    “…Purpose Determining the optimal surgical approach for patients with T1 renal tumors requires balancing long-term oncological and renal functional outcomes. Using machine learning algorithms, we aimed to develop a model to predict both outcomes simultaneously, according to each radical (RN) and partial nephrectomy (PN). …”
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  10. 310

    Nondestructive Evaluation of Functionally Graded Subsurface Damage on Cylinders in Nuclear Installations Based on Circumferential SH Waves by Zhen Qu, Xiaoqin Shen, Xiaoshan Cao

    Published 2016-01-01
    “…The Bessel functions and the power series technique are employed to solve the governing equations. …”
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  11. 311

    A Study of Geodesic (<i>E</i>, <i>F</i>)-Preinvex Functions on Riemannian Manifolds by Ehtesham Akhter, Mohd Bilal, Musavvir Ali

    Published 2025-03-01
    “…In the last, we establish the points of extrema of a non-smooth <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><mi>E</mi><mo>,</mo><mi>F</mi><mo>)</mo></mrow></semantics></math></inline-formula>-preinvex functions on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><mi>E</mi><mo>,</mo><mi>F</mi><mo>)</mo></mrow></semantics></math></inline-formula>-invex subset of the Riemannian manifolds by using the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><mi>E</mi><mo>,</mo><mi>F</mi><mo>)</mo></mrow></semantics></math></inline-formula>-proximal sub-gradient.…”
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  12. 312

    Finite Element Modeling for Buckling Analysis of Tapered Axially Functionally Graded Timoshenko Beam on Elastic Foundation by Masoumeh Soltani

    Published 2020-11-01
    “…In this study, an efficient finite element model with two degrees of freedom per node is developed for buckling analysis of axially functionally graded (AFG) tapered Timoshenko beams resting on Winkler elastic foundation. …”
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  13. 313

    Misrepresentation of thermal stability across different oxidation states of copper compounds by SCAN meta-GGA functionals by Soungmin Bae, Noriyuki Egawa, Hannes Raebiger

    Published 2025-03-01
    “…Abstract The Strongly Constrained and Appropriately Normed (SCAN) meta-GGA (generalized gradient approximation) density functional and its regularized derivatives (e.g., SCAN and r2SCAN) have been proposed as a post-standard exchange-correlation functional, and are widely believed to replace conventional GGA functionals (e.g. …”
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  14. 314

    Thermoelastic Analysis of a Functionally Graded Simple Blade Using First-Order Shear Deformation Theory by Manouchehr Mohammad Hosseini Mirzaei, Mohammad Arefi, Abbas Loghman

    Published 2020-04-01
    “…In this article, the thermo-elastic behavior of a functionally graded simple blade subjected to the mechanical and thermal loadings is presented, applying a semi-analytical method and a variable thickness cantilever beam model. …”
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  15. 315

    An Efficient and Regularized Modeling Method for Massive Scattered Data Combining Triangulated Irregular Network and Multiquadric Function by Haifei Liu, Yuhao Zhang, Xin Liu, Ijaz Ahmed, Jianxin Liu

    Published 2025-03-01
    “…In this paper, an efficient and regularized modeling method, TIN-MQ, which integrates a triangulated irregular network (TIN) and a multiquadric (MQ) function, is proposed. Initially, a constrained residual MQ function and a damped least squares linear equation are constructed, and the conjugate gradient method is employed to solve this equation to enhance the modeling precision and stability. …”
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  16. 316

    Climatic Adaptability Changes in Leaf Functional Traits of Old <i>Pinus tabulaeformis</i> in Loess Plateau by Yuting Lei, Zimao Feng, Zhong Zhao

    Published 2025-07-01
    “…During the peak growth period (July) of <i>P. tabuliformis</i> in 2023 and 2024, integrating phylogenetic comparative methods with environmental gradient analysis, we quantified 28 functional traits (7 morphological, 8 anatomical, 5 chemical, and 8 physiological traits) of old <i>P. tabuliformis</i>. …”
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  17. 317

    A cross-entropy corrected hybrid multiconfiguration pair-density functional theory for complex molecular systems by Rulin Feng, Igor Ying Zhang, Xin Xu

    Published 2025-01-01
    “…Abstract Hybrid density functionals, such as B3LYP and PBE0, have achieved remarkable success by substantially improving over their parent methods, namely Hartree-Fock and the generalized gradient approximation, and generally outperforming the second-order Møller-Plesset perturbation theory (MP2) that is more expensive. …”
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  18. 318

    Multi-Valve Coordinated Disturbance Rejection Control for an Intake Pressure System Using External Penalty Functions by Louyue Zhang, Duoqi Shi, Chao Zhai, Zhihong Dan, Hehong Zhang, Xi Wang, Gaoxi Xiao

    Published 2025-07-01
    “…This paper proposes a coordinated active disturbance rejection control (ADRC) scheme based on external penalty functions. The chamber pressure safety limit is formulated as an inequality-constrained optimization problem, and an exponential penalty together with a gradient based algorithm is designed for dynamic constraint relaxation, with guaranteed global convergence. …”
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  19. 319

    Automated Detection and Biomarker Identification Associated with the Structural and Functional Progression of Glaucoma on Longitudinal Color Fundus Images by Iyad Majid, Zubin Mishra, Ziyuan Chris Wang, Vikas Chopra, Dale Heuer, Zhihong Jewel Hu

    Published 2025-02-01
    “…Moreover, while visual function is the main concern for glaucoma patients, and the ability to infer future visual outcome from imaging will benefit patients by early intervention, there is currently no available tool for this. …”
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  20. 320

    Geographic Origin and Functional Group Type Affect the Decomposability of Peatland Plant Litter Through Biochemical Properties by Jinze Ma, Yong‐Da Chen, Si‐Nan Wang, Jing Zeng, Chao Liu, Zhao‐Jun Bu

    Published 2025-07-01
    “…Climate warming may accelerate decomposability, potentially diminishing the carbon accumulation function of peatlands, underscoring the necessity to integrate latitudinal gradients and functional diversity into peatland carbon models.…”
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