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581
Research on Key Problems in the Construction Process of a Single-layer Aluminum Alloy Lattice Shell Structure
Published 2025-03-01“…[Purposes] To solve the key problems in the field construction of the first single-layer aluminum alloy lattice shell structure in Shanxi Province, the interaction analyses between the 12.9 m cantilever canopy structure at the lower part and the 58.3 m diameter single-layer aluminum alloy lattice shell structure at the upper part are carried out. [Methods] According to the conditions of the construction site, FE model of construction process was established and the comparative analysis of four kinds of jacking point layout scheme were carried out. …”
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582
Hybrid Machine Learning for CNC Process Monitoring
Published 2025-01-01“…By accurately predicting reference signals and comparing them with real-time measurements, deviations can be used for effective model-based process monitoring and anomaly detection. …”
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583
The effect of blood flow restriction training on core muscle strength and pain in male collegiate athletes with chronic non-specific low back pain
Published 2025-01-01“…ObjectiveThe objective of this study is to compare the effectiveness of low-load blood flow restriction training (LL-BFRT) to heavy-load resistance training (HL-RT) in male collegiate athletes with chronic non-specific low back pain (CNLBP).MethodsTwenty-six participants were randomly assigned to LL-BFRT (n = 13) or HL-RT (n = 13). …”
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584
A review of vortex water turbine design for sustainable energy generation (principles, optimization, and validation)
Published 2025-04-01“…Prototype testing offers empirical data on shaft power, torque, and efficiency, while performance analysis involves comparing these findings with theoretical predictions to confirm the design’s effectiveness. …”
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585
The Anatomical Basis of Nonuniform Settlement of the C2 Lateral Mass and Its Association With Atlantoaxial Osteoarthritis
Published 2025-07-01“…The stress distributions on the alar ligament, transverse ligament, and lateral mass cartilage were analyzed using Abaqus software under varying torque conditions. Results Macroscopic analysis revealed that the C2LMS measured at the center point was comparable to the overall C2LMS (18.19 ± 1.83 mm vs. 18.18 ± 1.82 mm, p = 0.942). …”
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586
Minimum-Energy Trajectory Planning for an Underactuated Serial Planar Manipulator
Published 2025-07-01“…The trajectory planning problem is cast as a constrained optimal control problem (OCP) for a two-degree-of-freedom revolute–revolute planar manipulator. The proposed method produces energy-efficient motion while limiting residual vibrations under motor torque limitations. …”
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587
Study on Impact Excitation and System Dynamic Characteristics of Shield Machine Planetary Gear Train
Published 2025-03-01“…The driving speed is applied to the rigid shell unit of the drive gear, load torque is applied to the rigid shell unit of the driven gear, and the corresponding initial speed is loaded on the drive gear.Methods Explicit dynamic simulation analysis was conducted using the contact automatic surface tosurface contact algorithm, which considered the effects of friction factors and damping. …”
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588
Response of nonlocal thermoelastic nanobeams supported by Pasternak foundations to the effect of generalized fractional theory with three-phase lags
Published 2025-07-01“…Numerical analysis was used to calculate and visually present the temperature, torque, and displacement distributions. The Laplace transform method facilitated the resolution of the governing equations. …”
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589
Control optimization for permanent magnet synchronous generators in multi-source power systems
Published 2024-11-01“…Additionally, three voltage controller models—proportional-integral (PI), fractional-order super-twisting sliding mode, and fuzzy fractional-order super-twisting sliding mode—were constructed using MATLAB/Simulink for comparative analysis and verification through simulations. …”
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590
Biomechanical evaluation of In-Out-In pedicle screws for atlantoaxial posterior fixation in the presence of high-riding vertebral artery and narrow C2 pedicles: a finite element an...
Published 2025-07-01“…A vertical load of 50 N and a torque of 1.5 Nm were applied at C0 to assess and compare the range of motion (ROM) and stress distribution. …”
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591
Lightweight LSTM and GRU Design for Data-Driven Rotor Position Error Estimation in IPMSM Drives
Published 2025-01-01“…The proposed lightweight LSTM- and GRU-based neural networks are extensively validated using a 2.2-kW interior permanent-magnet synchronous motors through simulations and experiments for estimating the step- and ramp-type dynamic rotor position errors. The comparative evaluation against the classical iterative rotor position correction method confirms its superiority in terms of estimation speed and accuracy, suggesting a good potential of the data-driven concept in improving electric drives.…”
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592
Shoulder Isokinetic Strength Balance Ratio in Overhead Athletes: A Cross-Sectional Study
Published 2021-06-01“… # Study design Cross-sectional study. # Methods A total of 237 athletes were submitted to isokinetic shoulder strength tests. …”
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593
Low Weight and Inertia Self-Balancing Testbed for a 3U CubeSat Attitude Control System
Published 2025-01-01“…Finally, a Least Squares Method (LSM) compensates for residual vertical misalignment after the balancing procedure, enabling precise center of mass (CM) control in all axes. …”
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594
Modeling and Dynamics Analysis of a Dual-Mass Flywheel with the Conformal Contact Action of Friction Damping Ring and Pressure Plate
Published 2021-01-01“…The approximate analytical solution of the nonlinear frequency characteristics of the system at steady state is derived. By comparing with the results obtained from numerical method, the theoretical analysis process is proved to be valid. …”
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595
Experimental study of cyclic fatigue of nickel-titanium rotating endodontic instruments with controlled shape memory T C-Files Gold STEA (V ideya)
Published 2025-03-01“…The following parameters were set on the endomotor for all instruments: rotation speed of 250 RPM and torque of 3 N·cm. The files were inserted into a groove of the corresponding size, the endomotor was turned on, and the time until the instrument broke was recorded. …”
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596
A meta-analysis of randomized controlled trials: evaluating the efficacy of isokinetic muscle strengthening training in improving knee osteoarthritis outcomes
Published 2025-01-01“…We aimed to utilize a meta-analysis to evaluate the efficacy of isokinetic muscle strengthening training (IMST) as a rehabilitation treatment for KOA in lowland areas. Methods The study conducted a comprehensive search of the CNKI, WanFang Data, VIP Database, PubMed, Ovid MEDLINE (1946–), Cochrane Library, Embase, and CBM databases. …”
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597
Robust Multi-Performances Control for Four-Link Manipulator Arm
Published 2025-05-01“…The linear quadratic regulator (LQR) method is often applied in the balance controlling space of the underactuated manipulator. …”
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598
Mining metagenomes and metatranscriptomes unveils viruses associated with cutaneous squamous cell carcinoma in hematopoietic stem cell transplant recipients
Published 2025-05-01“…DNA sequencing (DNA-seq) identified Torque teno virus, Saimiriine herpesvirus 1, Merkel cell polyomavirus, Human parvovirus B19, Human gammaherpesvirus-4, Human herpesvirus-6, and others. …”
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599
Reliability of isokinetic knee strength measurements in children: A systematic review and meta-analysis.
Published 2019-01-01“…Isokinetic dynamometry could be indicated as a method for measuring muscle strength training in children. …”
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600
Disturbance Observer-Based Discrete Sliding-Mode Control for a Marine Diesel Engine with Variable Sampling Control Technique
Published 2020-01-01“…In addition, a cylinder-by-cylinder mean value engine model (MVEM) is built by restructuring the combustion torque model, based on which numerical simulations are carried out by comparing the proposed method with PID and the extended state observer (ESO)-based sliding mode controllers. …”
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