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A Novel FECAM-iTransformer Algorithm for Assisting INS/GNSS Navigation System during GNSS Outages
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662
STUDY ON IMPROVEMENT FOR THE EXCITATION PERFORMANCE OF BV500 TYPE CONTROLLED SEISMIC SOURCE VIBRATOR PLATE BASED ON TOPOLOGY OPTIMIZATION METHOD
Published 2025-02-01“…During the operation of the BV500 type controlled seismic source vibrator in Sichuan and Chongqing areas, due to the improper plate design, the vibration energy down-transfer rate is low and the excitation signal distortion is serious.Therefore, the continuum topology optimization method was introduced, and a variable density method of the solid isotropic material with penalization (SIMP) model was used to optimize the design of BV500 controlled seismic source vibrator plate from two aspects — reducing mass and increasing stiffness, and an “octagonal I-steel-20a” plate was innovatively developed.After optimization, the mass of the plate was reduced by 45.29%, and the stiffness of the plate was increased by 79.92%, the vibration performance of the plate before and after optimization is studied.The simulation results show that compared with the original aluminum alloy plate, the energy down-transfer rate of the “octagonal I-steel-20a” plate increases by 15.11%,the displacement amplitude of the ground surface contact center point increases by 43.74%, and the amplitude of the interaction force increases by 40.56%.The field experiment shows that when the “octagonal I-beam-20a” plate is excited, the effective value of the average vibration velocity of the near-field signal of the detector is increased by 22.23%, and the effective value of the average vibration velocity of the far-field signal of the detector is increased by 39%, the law is consistent with the numerical simulation conclusion of controlled seismic source road excitation.The excitation performance of the “octagonal I-beam-20a” plate is better than that of the original aluminum alloy integral plate, which effectively improves the road excitation effect of BV500 type controlled seismic source in Sichuan and Chongqing areas.…”
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663
Traffic light optimization (TLO) using reinforcement learning for automated transport systems
Published 2025-02-01“…In our previous work, we used fuzzy logic to control the traffic light where the time was fixed but in this paper, the waiting time becomes a variable that changes depending on other road variables like vehicles, pedestrians, and times. …”
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Estimating intersections' near-crash conflicts with the drone-based image-recording data
Published 2025-03-01“…The proposed new surrogate variable, featuring its direct relevance to road users’ maneuvers, e.g. braking from high-precision time-varying braking rate information uniquely available from the DIRD, has reflected crash-prone contributors attributed to driving behaviors and intersections’ overall environments. …”
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667
The Impact of Tidal Flooding on Decreasing Land Values in the Areas of Tugu District, Semarang City
Published 2021-04-01“…In this context, the variable of tidal flooding vulnerability greatly affects the stagnation of land prices and even decreases in land prices, while the positive accessibility variable is the location of land on national and local roads that has experienced a very high price increase.…”
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An enhanced substation equipment detection method based on distributed federated learning
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Internal Due Date Assignment in a Wafer Fabrication Factory by an Effective Fuzzy-Neural Approach
Published 2013-01-01Get full text
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Compact Planar Sparse Array Antenna with Optimum Element Dimensions for SATCOM Ground Terminals
Published 2015-01-01Get full text
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FLAME 1.0: a novel approach for modelling burned area in the Brazilian biomes using the maximum entropy concept
Published 2025-06-01“…We assessed burned-area responses to different explanatory variable groups. The model showed adequate performance for all biomes and fire categories. …”
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675
Change in elevation predicts 100 km ultra marathon performance
Published 2025-07-01“…Running on a track (9.32 km/h) was the fastest ahead of road running (8.11 km/h), trail running (6.21 km/h) and mountain running (5.74 km/h). …”
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Performance Limits of Hydraulic-Binder Stabilization for Dredged Sediments: Comparative Case Studies
Published 2025-07-01“…Lime–cement stabilization offers one pathway, yet field performance is highly variable. This study juxtaposes two French marine dredged sediments—DS-F (low plasticity, organic matter (OM) ≈ 2 wt.%) and DS-M (high plasticity, OM ≈ 18 wt.%)—treated with practical hydraulic road binder (HRB) dosages. …”
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The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023
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