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941
Mechanism of reverse fault activation when mining under the condition of thick and hard roof
Published 2025-02-01“…The distance function formula between the movement line of different layers of overlying strata and the fault plane was obtained by combining the fault dip angle, and the boundary transition area between the fault plane and the rock layer movement line was accurately delineated. …”
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942
UAV Autonomous Navigation Based on Deep Reinforcement Learning in Highly Dynamic and High-Density Environments
Published 2024-09-01“…In addition, a dynamic reward function is constructed based on a non-sparse reward function to balance the agent’s conservative behavior and exploratory behavior during the model training process. …”
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943
Machine Learning Strategy to Achieve Maximum Energy Harvesting and Monitoring Method for Solar Photovoltaic Panel Applications
Published 2022-01-01“…For most other objects, the dependence of the reflection magnitude on the angle of incidence is approximately the same.…”
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944
Robust Path Tracking Control with Lateral Dynamics Optimization: A Focus on Sideslip Reduction and Yaw Rate Stability Using Linear Quadratic Regulator and Genetic Algorithms
Published 2025-05-01“…The dynamic system model of the vehicle is represented based on yaw rate angle, lateral speed, and vehicle sideslip angle as the variables of the state space model, with the steering angle as an input parameter. …”
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945
A Dynamic Inverse Decoupling Control Method for Reducing Energy Consumption in a Quadcopter UAV
Published 2025-05-01“…Next, by solving the actual control variables, a fast convergence system is dynamically formed by the deviation between the virtual control variables and their actual values, ensuring that the specific function combination of pitch angle and yaw angle quickly converges to the expected value. …”
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946
Effects of Rhythm Step Training on Foot and Lower Limb Balance in Children and Adolescents with Flat Feet: A Radiographic Analysis
Published 2024-08-01“…Key variables, such as quadriceps angle (Q-angle), calcaneal pitch angle (CPA), calcaneal–first metatarsal angle (CFMA), and navicular–cuboid overlap ratio (OR) were measured before and after the intervention. …”
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947
Double-scaled SYK, chords and de Sitter gravity
Published 2025-03-01“…We use the obtained match to compute the partition function and scalar two-point function in 3D de Sitter gravity.…”
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948
Control Method of Main Steam Valve Opening in Multi-Machine Power System by Integrating Dynamic Surface and RBF Neural Network
Published 2025-01-01“…This study proposes a robust control method for main valve opening in multi-machine power systems that integrates dynamic surfaces and radial basis function neural networks to address the poor robustness and stability in existing control systems. …”
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949
Comparison of gluteal muscle central activation in individuals with and without patellofemoral pain
Published 2025-02-01“…This study compared the central activation ratio (CAR) of the gluteus medius and gluteus maximus between individuals with and without PFP, and assessed the associations between gluteal CAR, frontal plane projection angle of the trunk and lower extremity, and knee function. …”
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950
Effect of additional free sustentaculum tali screw fixation through modified sinus tarsi approach on intra-articular calcaneal fractures
Published 2024-11-01“…Imaging evaluation included the Böhler angle, Gissane angle, length, height, and width of the calcaneus, and the Böhler angle in both groups 1 year after surgery. …”
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951
Patient-specific instrumentation technology enhances clinical outcomes in total elbow arthroplasty
Published 2025-04-01“…Additionally, in the 3DP group, changes in the imaging indicators such as the angle between the axis of humerus medullary cavity and the hinge axis of elbow (H-H angle), the angle between the axis of middle ulna medullary cavity and the hinge axis of elbow (MU-H angle), the angle between the axis of proximal ulna medullary cavity and the hinge axis of elbow (PU-H angle) were assessed before and after surgery. …”
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952
Enhancing Trajectory Tracking Performance of Underwater Gliders Using Finite-Time Sliding Mode Control Within a Reinforcement Learning Framework
Published 2025-04-01“…Given the intricate and ever-changing underwater environment, the precise management of an underwater glider’s dive depth and pitch angle is imperative for optimal functionality.This study introduces a finite-time sliding mode control method for controlling dive depth and pitch angle of underwater gliders. …”
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953
Influence of joint fissure occurrence on stress distribution of coal wall in large mining height
Published 2025-08-01“…The abutment pressure at the same position in the limit equilibrium zone increases. The dip angle and azimuth angle of the joint surface have a relatively small influence on the bearing pressure in the limit equilibrium zone.…”
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954
Protein misfolding and mitochondrial dysfunction in glaucoma
Published 2025-04-01“…Emerging evidence suggests that pathological mechanisms relating to protein folding and mitochondrial dysfunction are significant factors in the disease onset of different types of open-angle glaucoma. In this review, we discuss these defects in three distinct types of open-angle glaucoma: primary open-angle glaucoma (POAG), normal tension glaucoma (NTG), and exfoliation glaucoma (XFG). …”
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955
Multi-objective design optimization of a transonic axial fan stage using sparse active subspaces
Published 2024-12-01“…The proposed strategy utilized sparse polynomial chaos expansion on a limited dataset to generate a function from which the differential and the covariance matrix can be obtained. …”
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956
Research on Tracking Control of Unmanned Mine Trucks Based on Adaptive Preview
Published 2022-10-01“…Considering the cumulative tracking error between reference trajectory and predicted trajectory, vehicle steering response delay and other factors, a multi-objective optimization function of adaptive preview is constructed. Finally, the optimization function is solved by genetic algorithms (GA), and the optimal preview point is output to the rear wheel feedback controller to realize the optimal control of the vehicle in the global path tracking process. …”
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957
Energy-Based Adaptive Control for Variable-Rope-Length Double-Pendulum Ship-Borne Cranes: A Disturbance Rejection Stabilization Controller Without Overshoot
Published 2025-01-01“…Firstly, the energy function of the system is constructed by analyzing the dynamic model of the system. …”
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958
基于最优传动性能设计偏置曲柄滑块机构的研究
Published 2014-01-01“…Under the design conditions of given time ratio and stroke,according to the bias schematic diagram slider-crank mechanism,the value interval of crank length is obtained by analysis,the structure size design formula of slider-crank mechanism is deduced and the function equation of crank length is the minimum transmission angle is built.Application of MATLAB software platform programming,the-change line graph is acquired and when the minimum transmission angle has a maximum value,the crank length value is solved,the crank length values is substituted into the design of the formula,you can get slider-crank mechanism unique optimal transmission performance solution, the feasibility and correctness of this design is verified by an example,the design process is simple and straightforward.…”
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959
Structural Design and Motion Analysis of the Wearable Knee Joint Exoskeleton
Published 2017-01-01“…The lower limb exoskeleton can walk normally through the dynamic simulation of ADAMS,the correctness of the driving function of the knee joint is verified and the torque curve of knee joint is prepared for the control. …”
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960
Research of NC Gear-hobbing Machining and Error Compensation
Published 2015-01-01“…The electronic composite differential unit is used to process the angle position pulse from the hobbing spindle and to process the motion coordinate( or angle position) pulse from the workpiece axis. …”
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