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141
Intersection decision making for autonomous vehicles based on improved PPO algorithm
Published 2024-12-01“…First, the Self‐Attention Mechanism (SAM) is introduced into the algorithmic framework to quickly identify the surrounding vehicles with a greater impact on the ego vehicle from different perspectives, accelerating data processing and improving decision quality. Second, an invalid action masking mechanism is adopted to reduce the action space, ensuring actions are only selected from feasible sets, thereby enhancing decision efficiency. …”
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142
Local Linear Wavelet Neural Network–Based Unscented Kalman Filter for Vehicle Collision Estimate Warning System and Ensuring Stable Vehicle-to-Infrastructure Communication
Published 2024-01-01“…These alerts can warn the driver of impending collisions with distant objects, enabling them to take appropriate evasive action. By implementing this integrated LLWNN-UKF approach leveraging sensor data and V2X communication, we aim to reduce the number of collisions caused by reckless driving, which will lead to a decrease in traffic-related fatalities and injuries.…”
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143
Multi-objective trajectory planning for connected and autonomous vehicles in mixed traffic flow
Published 2025-06-01“…Here, we design the state space, action space, and reward function, where the state space encompasses variables such as speed, relative speed, distance to the stop line, relative position, phase state, and remaining phase duration, and the action space outputs optimal acceleration and deceleration. …”
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144
Preparation and Evaluation of Lercanidipine HCl Nanosuspension to Improve the Dissolution Rate
Published 2025-02-01“… Lercanidipine HCl, a third-generation calcium channel blocker, blocks calcium entry into smooth muscle L-type calcium channels. This action leads to a decrease in blood pressure and induces peripheral vasodilation. …”
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145
Numerical simulation of respirable dust transport law in fully mechanized excavation face
Published 2025-06-01“…When the air flow field is far away from the tunneling surface and without the obstruction of the tunneling machine, the airflow field diffuses and the wind speed decreases, but a large number of particles still float in the roadway for a long time and are difficult to settle due to the small particle size of the exhaled dust.…”
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146
A Swing-Assist Controller for Enhancing Knee Flexion in a Semi-Powered Transfemoral Prosthesis
Published 2024-01-01“…The experiments demonstrate that the proposed controller increases peak knee angle and minimum toe clearance during swing phase without increasing hip compensatory actions, relative to the users’ daily-use devices.…”
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147
Comparison of Empirical and Reinforcement Learning (RL)-Based Control Based on Proximal Policy Optimization (PPO) for Walking Assistance: Does AI Always Win?
Published 2024-11-01“…Results showed that both controllers reduced hamstring muscle activation and improved the preferred walking speed, with the empirical controller also decreasing gastrocnemius muscle activity. …”
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148
The influence of pulse current on drop transfer during double-electrode gas surfacing
Published 2025-06-01“…It was found that the common drop under the action of electrodynamic forces acquires centripetal acceleration, which contributes to its directed transfer to the weld pool and allows minimizing the amount of spatter on the surface of the base metal. …”
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149
The study of the isolated power supply system operation with controlled distributed generation plants, energy storage units and drive load
Published 2022-01-01“…It is advisable to conduct further studies to coordinate the actions of the control system of the electric energy storage unit and the auto-prognostic speed controller of the distributed generation plant.…”
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150
The ways of improvement special physical training of high-qualified women volleyball players in competitive period of annual macrocycle
Published 2018-02-01“…The strongest correlation relationship was the level of general physical fitness with: the level of general and hopping endurance; the level of development of jumping; special dexterity; special endurance; speed and strength of hands. As part of corrective modules, the training load of aerobic-anaerobic direction was increased. …”
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151
Simulation of mixed flow characteristics of distiller′s grains-wastewater for anaerobic fermentation
Published 2024-12-01“…The simulation results showed that the slurry inside the curved blade at the top of the rotor reached a maximum velocity of 48.06 m/s and gradually decreased to zero along the radial direction. Due to the rotor's high-speed rotation, a high-pressure zone and a low-pressure zone were formed on each side of the rotor, with a maximum working pressure of 0.306 MPa. …”
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152
Legal Challenges of Marine Insurance Laws in the Use of Unmanned Ships
Published 2025-03-01“…These include significant cost reductions in transportation, fewer accidents and collisions attributable to human error, enhanced operational speed, and minimization of idle times. Furthermore, these vessels promise lower operational costs, optimized ship designs, increased cargo capacity, reduced fuel consumption, and consequently, a substantial decrease in environmental pollutants. …”
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153
The program of physical training of servicemen to a qualification examination on the right to wear the “Beret with honors”
Published 2018-12-01“…Results: Use of the author's technique in 21 days of training allowed: to increase the level of the general endurance by 11,5%, the level of power endurance by 4,2%, the level of high-speed and power abilities and dexterity by 9,9%; the level of preparedness for aimed fire by 17,3%. …”
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154
The influence of special physical fitness of athletes on the level of technique of playing beach volleyball
Published 2021-12-01“…Significant (p <0.05) development of explosive power, speed and agility was revealed. There is a significant (p <0,05) increase: in the number of jump serve and spike; improving the quality/number of serve and attack; improving the quality of passing and the number of blocks. …”
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155
The Strategic Communication Planning in an emergency at the Almirante Álvaro Alberto Nuclear Power Plant (CNAAA)
Published 2023-07-01“…In a world where information has a high speed of propagation and is present in the most diverse media, it is essential to follow the news in order to keep the population informed about the actions taken, the real risks and the consequences of an alleged nuclear accident. …”
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156
Queue Formation and Obstacle Avoidance Navigation Strategy for Multi-Robot Systems Based on Deep Reinforcement Learning
Published 2025-01-01“…Upon successful formation training, a speed control mechanism is introduced to improve the stability of the queue during navigation, ensuring robots maintain uniform speed and formation while avoiding obstacles. …”
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157
Frequency-specific changes in prefrontal activity associated with maladaptive belief updating in volatile environments in euthymic bipolar disorder
Published 2025-01-01“…Additionally, we examined if this increased expectation speeds up belief updating in decision-making, associated with modulation of rhythmic neural activity within the prefrontal, orbitofrontal, and anterior cingulate cortex (PFC, OFC, ACC). …”
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158
PARAMETRIC SELF-EXCITATION OF CUTTING DYNAMIC SYSTEM
Published 2013-09-01“…It is also shown that through the parametric actions, with increase in cutting speed under the spindle row growth, there always exists critical frequency at which the system loses its stability.…”
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159
Study on mechanical properties of large deformation segmental cement-based honeycomb structure
Published 2024-11-01“…In addition, the RA-AF values show that the loading rate has little effect on the crack type, which is almost unchanged with the increase of loading rate. These studies verify the feasibility of using honeycomb structure to support roadway with fast deformation speed and large deformation. …”
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160
New information technology of centralized management of passenger car fleet
Published 2017-12-01“…It is noted that the sources of increased complexity of managing the passenger car fleet are the constantly increasing complexity of business processes automated at the linear enterprise, which conflicts with the existing regulatory and technological base, as well as increasing requirements for the speed and accuracy of execution of all operations with cars. …”
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