Showing 761 - 780 results of 2,557 for search '(functional OR function) gradient', query time: 0.18s Refine Results
  1. 761

    Altitudinal patterns of bacterial communities across soil layers in the alpine meadows of the Qinghai-Tibet Plateau by Zhiyuan Chen, Yeteng Xu, Xinyue Wang, Tong Ma, Yang Liu, Xiang Qin, Wei Zhang, Tuo Chen, Guangxiu Liu, Binglin Zhang

    Published 2025-02-01
    “…Microorganisms in the soils of alpine meadows on the Qinghai-Tibet Plateau are pivotal in sustaining ecosystem functionality and stability. The community structure and functional composition of these microbes exhibit pronounced altitudinal variations; however, specific distribution patterns across different soil layers remain inadequately elucidated within alpine meadow ecosystems. …”
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  2. 762

    Trajectory Based Prioritized Double Experience Buffer for Sample-Efficient Policy Optimization by Shengxiang Li, Ou Li, Guangyi Liu, Siyuan Ding, Yijie Bai

    Published 2021-01-01
    “…However, policy gradient methods commonly involve function approximation and work in an on-policy fashion, which leads to high variance and low sample efficiency. …”
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  3. 763

    Effect Invitro Activation on the Spermiograms of ligozoospermic Patients by Yahya k. Al–Sultani, Mohsin k. Al-Murshdi

    Published 2016-04-01
    “… Objective: The objective of this study was to improve certain sperm function parameters in vitro of oligozoospermic patients and other mild male factors using sperm activation techniques such as swim-up and density gradient. …”
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  4. 764

    Three-Dimensional Reconstruction of Zebra Crossings in Vehicle-Mounted LiDAR Point Clouds by Zhenfeng Zhao, Shu Gan, Bo Xiao, Xinpeng Wang, Chong Liu

    Published 2024-10-01
    “…Finally, a matching template is selected, and an energy function composed of the average intensity of the point cloud within the template, the intensity information entropy, and the intensity gradient at the template boundary is constructed. …”
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  5. 765

    Ultrasound-triggered drug release and cytotoxicity of microbubbles with diverse drug attributes by Chi-Fen Chuang, Chia-Wei Lin, Chih-Kuang Yeh

    Published 2025-01-01
    “…This study investigates Camptothecin-loaded MBs (CPT-MBs) and Doxorubicin-loaded MBs (DOX-MBs), focusing on how properties such as hydrophilicity, hydrophobicity, and charged functional groups affect their interaction with the lipid surfaces of MBs, thereby influencing the fundamental characteristics and acoustic properties of the drug-loaded MBs. …”
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  6. 766

    Impact of discharge regulation on zooplankton communities regarding indicator species and their thresholds in the cascade weirs of the Yeongsan River by Hyo Gyeom Kim, Chaehong Lim, Taesung Kim, Jeong-Hui Kim, Hyun-Woo Kim

    Published 2024-12-01
    “…Discharge regulation in rivers with cascade weirs profoundly alters natural flow dynamics, impacting habitat characteristics and leading to the homogenization of community structure and function. Identifying indicator species and their ecological thresholds is crucial for effectively monitoring and assessing the ecological conditions of regulated river systems. …”
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  7. 767

    A Gravity Data Denoising Method Based on Multi-Scale Attention Mechanism and Physical Constraints Using U-Net by Bing Liu, Houpu Li, Shaofeng Bian, Chaoliang Zhang, Bing Ji, Yujie Zhang

    Published 2025-07-01
    “…Gravity and gravity gradient data serve as fundamental inputs for geophysical resource exploration and geological structure analysis. …”
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  8. 768

    Spatiotemporal change of green watershed development level of the Yangtze River Economic Belt from the perspective of human-water relationship by FANG Tingting, WANG Lei, DUAN Xuejun, ZOU Hui, WANG Yazhu

    Published 2025-03-01
    “…Additionally, it identified shortcoming areas in green watershed development based on the main functional zones. [Results] (1) From 2010 to 2020, the overall green watershed development improved. …”
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  9. 769

    Cationic substitution, dynamical stability, thermal stability, electronic and thermoelectric properties in 2D dialkali metal monoxides via DFT and ML approach by S. Chellaiya, Thomas Rueshwin, R. D. Eithiraj

    Published 2025-07-01
    “…Specifically, for electronic property assessment, generalized gradient approximation (GGA) and hybrid exchange-correlation functionals were utilized. …”
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  10. 770
  11. 771

    Modified the CG-Algorithm for Unconstrained Non-Linear Optimization by Using Oren’s Update by Abbas Al-Bayati, Abdulghafor Al-Rozbayani

    Published 2005-12-01
    “…The new proposed algorithm is based on the inexact line searches and it is examined by using different non-linear test functions with various dimensions.…”
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  12. 772

    The Extended CG Method for Non-Quadratic Models by Abbas Al-Bayati, Basim Hassan, Sawsan Ismael

    Published 2011-07-01
    “…This paper investigates an interleaved algorithm which combines between the extended conjugate gradient with the hybrid method of Touati-Storey. This combined algorithm is based on the exact line search to solve a number of non-linear test functions with different dimensions. …”
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  13. 773

    Perfil altitudinal de la temperatura media del aire en Colombia by Eslava Jesus

    Published 1992-10-01
    “…The defined equations show that temperature is not a unique function of altitudinal changes, but it also depends on specific physical conditions for each region or subregion.…”
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  14. 774
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  16. 776

    Comparative Evaluation of Feed-Forward Neural Networks for Predicting Uniaxial Compressive Strength of Seybaplaya Carbonate Rock Cores by Jose W. Naal-Pech, Leonardo Palemón-Arcos, Youness El Hamzaoui

    Published 2025-05-01
    “…This work presents a comprehensive evaluation of four feed-forward artificial neural network (ANN) architectures—radial basis function (RBF), Bayesian regularized (BR), scaled conjugate gradient (SCG), and Levenberg–Marquardt (LM)—to predict UCS from three readily measured variables: water content, interconnected porosity, and real density. …”
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  17. 777

    Osteoarthritis Classification Using Hybrid Quantum Convolutional Neural Network by Devansh Tikariha, Abdul Moomin, D. Jeyamani, P. Rukmani

    Published 2025-01-01
    “…The model utilises the Swish activation function, which combines smoothness and nonlinearity to enhance learning efficiency and gradient flow, which are critical in complex diagnostic tasks. …”
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  18. 778
  19. 779

    A Novel Method for Inverting Deep-Sea Sound-Speed Profiles Based on Hybrid Data Fusion Combined with Surface Sound Speed by Qiang Yuan, Weiming Xu, Shaohua Jin, Xiaohan Yu, Xiaodong Ma, Tong Sun

    Published 2025-04-01
    “…The artificial lemming algorithm (ALA) is introduced to optimize the inversion of empirical orthogonal function (EOF) coefficients, enhancing global search efficiency while avoiding local optimization. …”
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  20. 780

    Uncertainty-aware approach for multiple imputation using conventional and machine learning models: a real-world data study by Romen Samuel Wabina, Panu Looareesuwan, Suphachoke Sonsilphong, Htun Teza, Wanchana Ponthongmak, Gareth McKay, John Attia, Anuchate Pattanateepapon, Anupol Panitchote, Ammarin Thakkinstian

    Published 2025-04-01
    “…We proposed and evaluated three uncertainty-aware functions (i.e., uncertainty sampling (US), probability of improvement (PI), and expected improvement (EI)) integrated with linear regression (LinearReg), decision tree (DT), random forest (RF), and extreme gradient boosting (XGBoost) using three large datasets: chronic kidney disease (CKD, n = 31,043), hypertension cohort from Ramathibodi Hospital (HT-RAMA, n = 140,047) and Khon Kaen University Hospital (HT-KKU, n = 108,942) with high missing rates. …”
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