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A novel approach to node coverage enhancement in wireless sensor networks using walrus optimization algorithm
Published 2024-12-01“…Wireless Sensor Networks (WSNs) are crucial components of modern technology, supporting applications like healthcare, industrial automation, and environmental monitoring. This research aims to design intelligent and adaptive sensor networks by integrating metaheuristics with node coverage optimization in WSNs. …”
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1602
Shape Optimization of Frame Structures Through a Hybrid Two-Dimensional Analytical and Three-Dimensional Numerical Approach
Published 2025-03-01“…In this work, we propose a method for the shape optimization of frame structures using a mixed analytical–numerical approach. …”
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1603
Energy efficiency joint optimization algorithm for low-precision ADC massive MIMO systems
Published 2020-06-01“…An uplink energy efficiency optimization algorithm based on alternating optimization algorithm was proposed for large-scale multiple-input multiple-output (MIMO) systems with low-precision analog to digital converters (ADC).That is,based on the maximum ratio combining (MRC) reception,an optimization model aiming at maximizing energy efficiency was established,and then the original fractional form optimization problem was converted into an equivalent subtractive form according to the nature of the fractional programming.In the case where the number of quantization bits was constant,the iterative optimization of the transmission power and the pilot length were performed.Simulation results show that the proposed algorithm has better spectral efficiency and energy efficiency.…”
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1604
Design Analysis and Optimization of 6-DOF Coupling Parallel Mechanism based on Spiral Theory
Published 2021-01-01“…Aiming at the application of parallel mechanism in flexible assembly and polishing, a new 6-DOF coupling parallel mechanism is designed. …”
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1605
FINITE ELEMENT SIMULATION AND STRUCTURE OPTIMIZATION OF THE AGITATING MECHANISM OF DOUBLE SHAFT VIBRATING MIXER
Published 2020-01-01“…Analyze the force of the agitating mechanism of double shaft vibrating mixer under different working conditions.Combined with the finite element software analysis,the stress,strain and modal shape of the agitating mechanism is obtained.At the same time,the strain pattern is compared with the actual deformation zone to verify the rationality of the finite element analysis.An optimization scheme is proposed aiming at improving the stiffness.After the simulation analysis,the stiffness of the optimized agitating mechanism is obviously enhanced to meet the work requirements.Meanwhile,the strength and natural frequency of the mechanism have also improved.It has an important significance for reducing safety incidents.At the same time,it also lays a theoretical foundation for vertical shaft vibration mixing technology.…”
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1606
Application of GA-ACO Optimized BP Neural Network in Fault Diagnosis of Planetary Gearbox
Published 2021-03-01“…Aiming at the problems of low fault recognition rate, slow convergence speed and difficult parameter selection in the process of fault diagnosis of planetary gearbox based on BP neural network improved by optimization algorithm, a GA-ACO algorithm is proposed to optimize the parameters of neural network. …”
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1607
Lubricant Performance Optimization and Thermal Balance Temperature Analysis of High-speed Train Gearbox
Published 2017-01-01“…Aiming at the frequent lubrication accidents of the high-speed train gearbox,the theoretical calculation of required volume of the gearbox lubrication oil is carried out. …”
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1608
OPTIMAL DESIGN OF SUSPENSION SYSTEM BASED ON IMPROVED PARTICLE SWARM-TABOO SEARCH ALGORITHM
Published 2021-01-01“…At the same time,the suspension system is proposed by the improved particle swarm optimization tabu search optimization algorithm with the decoupling rate of the main direction of the system excitation force as the optimization goal. …”
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1609
Link Group Parametric Modeling and Optimal Design in Multi-arm Mechanical Arm System
Published 2021-03-01“…Aiming at the problems of low calculation efficiency and conservative optimization design method of link in multi-arm mechanical arm system, taking the concrete pump truck as a typical engineering equipment component, the cylinder and link between the arm units are considered as one link group, the ANSYS APDL language is applied for the parametric modeling, and the optimization analysis is carried out under multiple working conditions, the optimal structure model of the link group is obtained. …”
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1610
Positioning optimization method based on indoor map deduction and signal through-wall correction
Published 2022-10-01“…An optimization method of through-wall corrected positioning based on mixed measurements of through-wall ranging and LoS ranging was proposed to solve the problem caused by NLoS measurement error.An approximate model of through-wall measurements was first proposed aiming at the typical through-wall NLoS scenario, which made indoor positioning method independent to the factors of the signal incident angle, the structure, the dielectric constant and the thickness of the wall.Then with the help of map deduction, whether there was a wall between the to-be-located node and the anchor node could be judged, and the positioning optimization method was proposed so that localization can be solved with only the redundant measurements.Simulations and UWB experiments show that in a variable map scenario considering through-wall propagation the proposed method outperforms SR-WLS (squared-range and weighted least square) in the aspect of average accuracy of indoor positioning.…”
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1611
Optimization Design of Pumping Unit Reversing Mechanism based on Output Swing Angle Analysis
Published 2019-01-01Get full text
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1612
RIS partitioning and UAV selection for age-of-information optimization in RIS-assisted UAV communications
Published 2025-04-01“…This paper proposes a deep reinforcement learning (DRL)-based resource allocation scheme for jointly determining the number of serving UAVs and their partition-based RIS allocation, aiming to minimize the age of information (AoI). Simulation results show that the proposed DRL-based joint UAV selection and partition-based RIS allocation scheme outperforms all the other schemes without joint optimization in terms of the average AoI.…”
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1613
Positioning optimization method based on indoor map deduction and signal through-wall correction
Published 2022-10-01“…An optimization method of through-wall corrected positioning based on mixed measurements of through-wall ranging and LoS ranging was proposed to solve the problem caused by NLoS measurement error.An approximate model of through-wall measurements was first proposed aiming at the typical through-wall NLoS scenario, which made indoor positioning method independent to the factors of the signal incident angle, the structure, the dielectric constant and the thickness of the wall.Then with the help of map deduction, whether there was a wall between the to-be-located node and the anchor node could be judged, and the positioning optimization method was proposed so that localization can be solved with only the redundant measurements.Simulations and UWB experiments show that in a variable map scenario considering through-wall propagation the proposed method outperforms SR-WLS (squared-range and weighted least square) in the aspect of average accuracy of indoor positioning.…”
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1614
The UPDATE trial (UVB Phototherapy in Dermatology for ATopic Eczema): study protocol for a randomized controlled trial of narrowband UVB with optimal topical therapy versus optimal...
Published 2024-07-01“…Discussion The UPDATE trial aims to provide high-quality evidence regarding the (cost-)effectiveness and safety of NB-UVB phototherapy in moderate-to-severe AE patients. …”
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1615
A blockchain-enabled collaborative management framework for optimizing green power market transactions
Published 2025-07-01“…Abstract Aiming at the critical challenges of fragmented environmental-economic value tracking and inefficient multi-stakeholder coordination in green electricity trading, this study proposes a blockchain-based collaborative management method integrating environmental attributes (e.g., carbon offsets) with economic transactions. …”
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1616
Signaling Effects in AI Streamers: Optimal Separation Strategy Under Different Market Conditions
Published 2024-11-01“…Our paper provides strategic insights for firms aiming to leverage AI streamers in diverse market conditions.…”
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1617
Empowering Energy Transition: IoT-Driven Heat Pump Management for Optimal Thermal Comfort
Published 2025-06-01Get full text
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1618
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1619
Interval State Feedback Control for Uncertain Systems Through Regional Pole Assignment With Optimization
Published 2025-01-01“…Aiming at the problems of interval expansion and mismatch of uncertainty description in the design of interval state feedback controller (ISFCr), this paper proposes a new design method of ISFCr using the regional pole assignment (RPA). …”
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1620
Study on Energy-saving Optimization Strategy and Simulation of Central Air-conditioning Water System
Published 2021-01-01“…In this study, a start-stop optimization strategy for the chiller and water pump and the global optimization method for the control parameters is proposed while aiming to satisfy the terminal cooling load and to minimize the total energy consumption of the system. …”
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