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1. Optimal sensing duration and threshold selection approach in cognitive radio networks with cooperative spectrum sensing NSTL国家科技图书文献中心

Malvika Vinod |  Ila Sharma... -  《International journal of communication systems》 - 2025,38(2) - e5959.1~e5959.15 - 共15页

摘要: spectrum sensing duration in the optimal threshold |  cooperative spectrum sensing scenario, the presence or |  selection approach in the cooperative spectrum sensing |  environment when the optimal threshold condition fails, t_s |  spectrum sensing performance parameters and throughput
关键词: cognitive radio |  cooperative spectrum sensing |  energy detection |  optimal threshold selection |  throughput

2. Global optimal Ramanujan spectrum: A feature extraction method without pseudo-monotonicity NSTL国家科技图书文献中心

Jian Cheng |  Haiyang Pan... -  《Expert Systems with Application》 - 2025,260(Jan.) - 125425.1~125425.9 - 共9页 - 被引量:3

摘要:, called global optimal Ramanujan spectrum (GORS), is |  to help select the optimal envelope results and |  adaptively determine the optimal iterative envelope number | As a common state feature extraction method | , spectral analysis methods have been widely used in
关键词: Global optimal Ramanujan spectrum |  Pseudo-monotonicity of feature index |  Feature extraction

3. Spectral calculation model for machine vision image enhancement NSTL国家科技图书文献中心

Bao, Rui |  Zhang, Wanlu... -  《Optics & Laser Technology》 - 2025,181(Pt.B) - 共9页

摘要: vision optimal spectral calculation model from the | . The results showed that the calculated optimal |  spectrum significantly improved the image brightness and | With the development of artificial |  intelligence technology, the demand for image quality in
关键词: Optimal spectrum |  Machine vision |  JS divergence |  Spectrum calculation model |  Basic theory

4. Optimal Imaging Band Selection for Laser-Vision System Based on Welding Arc Spectrum Analysis NSTL国家科技图书文献中心

Yu, Shuangfei |  Hu, Jiacheng... -  《IEEE sensors journal》 - 2025,25(2) - 2534~2546 - 共13页

摘要: selection of the optimal imaging band for the LVS to |  investigations, we select the optimal imaging band for the LVS |  with the optimal visual clarity. Experiments have |  working in this optimal bandwidth can effectively avoid | The laser-vision system (LVS) is considered
关键词: Welding |  Imaging |  Laser noise |  Optical sensors |  Visualization |  Steel |  Sea measurements |  Robots |  Optical imaging |  Measurement by laser beam...

5. A cable-based tuned inerter damper for edgewise vibration control of the wind turbine blade NSTL国家科技图书文献中心

Tang J. |  Cai Q.... -  《Engineering structures》 - 2025,323(Jan.15 Pt.A) - 1.1~1.16 - 共16页

摘要: established. Subsequently, the wind load spectrum of the |  Fourier spectrum of wind speeds acting on the blade. The |  optimization identifies optimal CTID parameters. The | © 2024 Elsevier LtdAs wind turbines grow |  larger, with longer blades aimed at enhancing wind
关键词: Edgewise vibration control |  Optimal design |  Rotation fourier spectrum |  Stochastic response |  Wind turbine

6. Error estimates with polynomial growth O(ε~(-1)) for the HHO method on polygonal meshes of the Allen-Cahn model NSTL国家科技图书文献中心

Naresh Kumar |  Ajeet Singh... -  《Applied Numerical Mathematics》 - 2025,211(May) - 78~102 - 共25页

摘要: discrete HHO spectrum estimate of the linearized Allen | , resulting in optimal convergence rates in L2 norm. Finally | A novel approach is presented to tackle the |  Allen-Cahn equation arising from phase separation in |  alloys, by utilizing the hybrid high-order (HHO) method
关键词: Allen-Cahn equation |  Hybrid high-order methods |  Polygonal mesh |  BDF2 |  Lyapunov functional |  Spectrum estimates |  Optimal convergence

7. Empirical variational mode extraction and its application in bearing fault diagnosis NSTL国家科技图书文献中心

Pang B. |  Hao Z.... -  《Applied acoustics》 - 2025,228(Jan.) - 1.1~1.19 - 共19页

摘要: implement an optimal spectrum division, guiding the |  introduced to guide optimal filtering and demodulation | . Secondly, a spectrum background scale-space division | © 2024 Elsevier LtdBearing fault signals |  typically contain rich interference components such as
关键词: Adaptive spectrum segmentation |  Fault diagnosis |  Filter characteristics |  Rolling bearing |  Variational mode extraction

8. UAVs Revolutionizing Efficiency: Integrating DRL and Random Walrus for Enhanced Energy and Spectral Resource Management NSTL国家科技图书文献中心

R. Abdul Sikkandhar |  A. Merline -  《IETE journal of research》 - 2025,71(1) - 359~371 - 共13页

摘要: optimal spectrum-sharing strategies and energy |  optimization (RWO) technique for efficient spectrum resource | The improvement of energy efficiency and |  spectral efficiency in networks is achieved by seamlessly |  integrating energy harvesting, cognitive radio technologies
关键词: Cognitive radio network |  Deep reinforcement learning |  Energy harvesting |  NOMA |  Random update strategy |  Spectrum sensing |  Spectrum sharing |  Unmanned aerial vehicles and walrus optimization

9. Towards strain gauge 2.0: Substituting the electric resistance routinely deposited on polyimide film by the optimal pattern for full-field strain measurement NSTL国家科技图书文献中心

A. Vinel |  M. Grediac... -  《Strain》 - 2025,61(1) - e12488~ - 共27页 - 被引量:1

摘要: spectrum analysis, a spectral technique developed for | The checkerboard constitutes the best pattern |  for full-field strain measurement because it |  maximizes image gradient. In the experimental mechanics |  community, employing this pattern is currently strongly
关键词: Checkerboard |  Crack |  Digital image correlation |  Electrical strain gauge |  Full-field measurement |  Laser marking |  Localized spectrum analysis |  Optimal pattern |  Shape memory alloy |  Strain gauge 2.0...

10. Generalised envelope spectrum-based signal-to-noise objectives: Formulation, optimisation and application for gear fault detection under time-varying speed conditions NSTL国家科技图书文献中心

Stephan Schmidt |  Daniel N. Wilke... -  《Mechanical Systems & Signal Processing》 - 2025,224(Feb.) - 111974.1~111974.22 - 共22页

摘要:, optimal filter design improves fault detection by |  spectrum, quantified by an envelope spectrum-based signal | -to-noise ratio. New optimal filter objective |  optimal filter coefficients of the formulation directly |  maximise the envelope spectrum-based signal-to-noise
关键词: Targeted optimal filter design |  Gear fault detection |  Varying operating conditions |  Fault signature enhancement
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