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Showing 221 - 240 results of 2,133 for search 'variable function ((co(efficient. OR efficiency.) OR coefficiency.) OR (efficient. OR efficiency.))', query time: 0.25s Refine Results
  1. 221

    A Data-Driven Iterative Feedforward Tuning Strategy with a Variable-Gain Feedback Controller for Linear Servo Systems by Jiaqian Fu, Shanhu Li

    Published 2025-06-01
    “…Theoretical verification and experimental results indicate the excellent iterative efficiency and accuracy of IFFT with a variable-gain feedback controller.…”
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  2. 222

    Coordinated regulation of water use-efficiency-cost in a winter wheat-summer maize rotation system and optimization of water allocation strategies by Li Zhao, Congying Han, Yinong Li, Baozhong Zhang, Yulu Zheng, Jiabing Cai

    Published 2025-09-01
    “…In the North China Plain, the winter wheat-summer maize rotation system faces challenges due to the mismatch between precipitation patterns and crop water demands, leading to groundwater over-exploitation and low irrigation efficiency. This study, based on a 2023–2024 field irrigation experiment and the simulation of dynamic field water cycles, examines how water allocation affects crop growth and yield. …”
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  3. 223

    Government Subsidies and Industrial Productivity in South Africa: A Focus on the Channels by Brian Tavonga Mazorodze

    Published 2025-05-01
    “…Estimation is performed through an endogeneity robust panel stochastic frontier model, which treats subsidies as both an inefficiency driver and a technology variable. An additional estimation approach is proposed integrating the true fixed effects with a control function in a bid to account for both unobserved heterogeneity and idiosyncratic endogeneity. …”
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  4. 224

    Optimization of Rate of Penetration and Mechanical Specific Energy Using Response Surface Methodology and Multi-Objective Optimization by Diunay Zuliani Mantegazini, Andreas Nascimento, Mauro Hugo Mathias, Oldrich Joel Romero Guzman, Matthias Reich

    Published 2025-01-01
    “…The results show that the RSM method and multi-objective optimization provide better results when compared with 2D analysis of parameters as a function of depth. The RSM method can be used as a tool to analyze the effects of the independent drilling mechanical parameters (WOB, RPM, FLOW, and TOR) on the response variables (ROP and MSE) with a 95% confidence level. …”
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    Functional and internalizing disorders co-aggregate with cardiometabolic and immune-related diseases within families: a population-based cohort study by Olivier D. Steen, Martje Bos, Sonja L. van Ockenburg, Yiling Zhou, Ilja M. Nolte, Harold Snieder, Kenneth Kendler, Judith G. M. Rosmalen, Hanna M. van Loo

    Published 2025-08-01
    “…We investigated whether functional and internalizing disorders co-aggregate with these diseases in families to gain insight into the aetiology of functional and internalizing disorders.  …”
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    Interplay of kidney function and anti-SARS-CoV-2 antibodies in COVID-19 mortality: a prospective cohort study by Sylvia Mink, Heinz Drexel, Andreas Leiherer, Janne Cadamuro, Wolfgang Hitzl, Emanuel Zitt, Matthias Frick, Patrick Reimann, Christoph H. Saely, Peter Fraunberger

    Published 2025-07-01
    “…The primary outcome was all-cause in-hospital mortality. Reduced kidney function combined with anti-SARS-CoV-2 spike antibody levels was a stronger predictor of COVID-19 mortality than either parameter separately. …”
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    Machine learning-based smart irrigation controller for runoff minimization in turfgrass irrigation by Sambandh Dhal, Jorge Alvarado, Ulisses Braga-Neto, Benjamin Wherley

    Published 2024-12-01
    “…The synthetic data were derived from observations collected from irrigation plots at the Texas A&M University Turfgrass Laboratory in Texas, United States, with Soil Wetting Efficiency Index (SWEI) serving as the target variable. …”
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    Association between the COVID-19 pandemic and cardiopulmonary function in acute coronary syndrome patients without SARS-CoV-2 infection by Xingbo Mu, Sicheng Ning, Quanyu Zhang, Yi Zhang, Shengyi Wang, Jian Zhang, Yanchun Liang, Yaling Han

    Published 2025-08-01
    “…This single-center cross-sectional cohort study evaluated cardiopulmonary function changes in acute coronary syndrome (ACS) patients post-percutaneous coronary intervention (PCI) without SARS-CoV-2 infection and explored pandemic-related influencing factors. …”
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    Main indicators of the credit organizations of the Russian Federation: vectors of changes by T. V. Grishina

    Published 2017-05-01
    “…In recent years, changes in the structure of the banking system and the profi tability of operations conducted by banks. Analysis of the functioning of the system shows a reduced role of banking indicators in the formation of the Russian GDP. …”
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  20. 240

    A new method for routing protocols using hybrid fuzzy clustering in UWSNs by Xiaoju Wang, Bin Meng, Xuexu Yuan, Junwei Zhao

    Published 2025-06-01
    “…Besides, the new scheme improved energy variance by 40% at nodes to prolong the network lifetime and maintain a higher throughput in conditions of variable network load. This fuzzy clustering technique stands apart because it tries to overcome UWSN-specific challenges using adaptive data aggregation along with multistep communication and hence is more resistant and energy-efficient compared to the conventional protocols.…”
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