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221
Federated deep reinforcement learning-based urban traffic signal optimal control
Published 2025-04-01“…The proposed method improves the model generalization ability of different local models during global cross-region distributed joint training under the premise of ensuring information security and data privacy, solves the problem of non-independent and homogeneous distribution of environmental data faced by different agents in real intersection scenarios, and significantly accelerates the convergence speed of the model training phase. By reasonably designing the state, action and reward functions and determining the optimal values of several key parameters in the federated collaboration mechanism, the RL model could ensure high learning efficiency and fast convergence in the face of the gradual increase of road network size and the exponential increase of state and action space with the number of intersections. …”
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222
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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223
Optimization method of task uninstallation in mobile edge computing environment combining improved deep Q-learning and transmission learning
Published 2024-12-01“…Experiments have shown that TL-DQN performs better in convergence speed compared to other algorithms. For delay sensitive users, the delay growth of TL-DQN algorithm is relatively slow. …”
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224
Hemodynamic evaluation of pulsatile-flow generating device in left ventricular assist devices
Published 2023-04-01“…Objective: to investigate the efficiency of a device that generates pulsatile flow during constant-speed axial-flow pump operation for use in left ventricular assist devices.Materials and methods. …”
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225
Modeling and Nonlinear Response of the Cam-Follower Oblique-Impact System
Published 2016-01-01“…The simulation results show that the cam and follower kept permanent contact when the cam rotational speed was low. With the increase of the cam rotational speed, the cam and follower would be separated and then impact under the gravity action. …”
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226
Evaluation of some photosensitizers against the cotton leaf worm, Spodoptera littoralis (Lepidoptera: Noctuidae), in relation to spectral and thermal reflectance
Published 2024-12-01“…Differences in reflectance were monitored immediately after feeding, confirming the speed and mode of action of those compounds.…”
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227
Kinetics of Extraction of Dioscine from Vegetable Raw Materials in Vibrocavitation Homogenizer
Published 2020-05-01“…It was also found that the resistance to mass transfer inside particles increases significantly as it approaches the final stage of the process, and with an increase in the rotor speed, it increases, especially at the initial stage of the process, which is associated with the intensity of cavitation and the weakening of its effect as the process deepens inward particles.Conclusions. …”
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228
Influence of Polygon Wheel on Dynamic Performance of Meter-gauge Locomotive
Published 2019-03-01“…At last, the change trend of wheel-rail vertical forces was studied under the joint action of polygon wheel and track excitation. The results showed that due to the low running speed of the meter-gauge locomotive, the polygon wheel will form low frequency vibration which will increase the vibration response of the car body; the polygon wheel will greatly increase the wheel-rail vertical forces, but it has little effect on the derailment coefficient; the wave depth limit is inversely proportional to the running speed of the locomotive and the harmonic order; the track excitation will not cover the trend caused by polygon wheel, but it will greatly increase the wheel-rail vertical forces. …”
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229
Coating silicon catheters with the optimized and stable carotenoid bioproduct from Micrococcus luteus inhibited the biofilm formation by multidrug-resistant Enterococcus faecalis v...
Published 2025-08-01“…Submerged fermentation model validation using the M6 isolate (accession number of PP197163) revealed an increase in carotenoid production up to 6-fold (1.2 g/l). …”
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230
Born too soon: accelerating change to 2030 and beyond
Published 2025-06-01“…Everyone has a role to play. Increasing speed now, and sustaining progress, requires multi-level leadership including from grassroots movements led by parents and affected people through to heads of state. …”
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231
Detecting and calibrating large biases in global onshore wind power assessment across temporal scales
Published 2025-04-01“…This discrepancy arises from the exponential decay of WPD with increasing ∆t, reflecting the intrinsic properties of wind speed distributions, particularly in regions with weaker winds. …”
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232
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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233
AI-Driven Insect Detection, Real-Time Monitoring, and Population Forecasting in Greenhouses
Published 2025-01-01“…The main challenge is creating AI models that perform with speed and accuracy, enabling immediate farmer action. …”
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234
CALCULATION OF LOADS ON THE CONTROLS WITH HELICOPTER MAIN ROTOR OF SINGLE-ROTOR DESIGN
Published 2016-11-01“…On the basis of the hinge moments values data loads on rotorcraft rotating ring, arising at different azimuthal location of the rotating main rotor blades are calculated.The calculations executed on the example of Mi-34 helicopter main rotor have shown that average loads in one revolution in the channel of collective pitch control increase in a control path at flying speed. At the same time loads in the channel of longitudinal control make up to 80 % of loads in the channel of collective pitch control, and in the channel oflateral control - to 40 % that will well be coordinated with the provided data of flight tests.…”
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235
Crowd Evacuation in Stadiums Using Fire Alarm Prediction
Published 2025-04-01“…The predictive alarm system significantly reduces false alarm rates and enhances fire detection speed, allowing emergency responders to take preemptive action. …”
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236
Development of a Bicycle Road Surface Roughness and Risk Assessment Method Using Smartphone Sensor Technology
Published 2025-06-01“…The FII showed a clear relationship between bump size and cycling speed, with higher bump sizes and faster cycling speeds leading to significantly increased impact forces on cyclists. …”
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237
Factors for traffic accident-prone section formation on federal roads
Published 2023-03-01“…A comprehensive analysis of traffic accident-prone section of federal roads in the Altai Territory allowed to identify a number of typical conditions that contribute to the formation of increased accident risk. Among them: a significant change in the speed limit, proximity to the city, the presence of a large number of conflict points, road works.The scope of the study / the possibility of subsequent use of the results of scientific work. …”
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238
Optimized Scheduling Under Master-Slave Game Considering Charging Power Segmental Regulation of Electric Vehicles
Published 2025-06-01“…Finally, to address challenges such as increased equilibrium game variables and decreased computation speed resulting from segmented regulation, we adopt an improved Kriging meta-model for solving, reducing the computational load, and improving the solving efficiency. …”
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239
Design, development, and testing of a cassava storage root-cutting robot utilizing a Stewart platform and mask R-CNN for precision agriculture
Published 2024-12-01“…Second, the optimal moving speed and the cutter's speed were determined. In the third step, the robot was integrated with computer vision technology. …”
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240
Epidemiological study on road traffic accidents in Al-Najaf city during 2011
Published 2012-12-01“…Deaths were not related to the number of RTA ( there is no relationship between deaths and the number of crashes but it depends on the severity of the crashes) and this need improving road safety legislations and putting them into action (speed limits, seatbelt laws, helmet laws) and education of people about the danger of speed and the importance of seatbelt wearing and proper and rapid hospital care. …”
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