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241
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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242
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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243
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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244
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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245
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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246
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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247
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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248
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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249
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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250
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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251
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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252
Temporal and spatial variation of PM2.5 in Antananarivo, the capital city of Madagascar
Published 2025-08-01“…Wind speed exhibits weak negative correlation with PM2.5, consistent with its role in particle dispersion. …”
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253
Photoalignment and photopatterning: New liquid crystal technology for displays and photonics
Published 2020-05-01“…In particular, we consider switches, controllers and polarization rotators, optical attenuators, switchable diffraction gratings, polarization image analyzers, liquid crystal lenses, and ferroelectric liquid crystal displays with increased operation speed. Conclusions. The liquid crystal photoalignment and photopatterning technology is a promising tool for new display and photonics applications. …”
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254
Reinventing the Trochoidal Toolpath Pattern by Adaptive Rounding Radius Loop Adjustments for Precision and Performance in End Milling Operations
Published 2025-05-01“…The back surface of the chip structure appears rough and jagged due to the shearing action.…”
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255
Mathematical model of controlled vane hydraulic shock absorber
Published 2023-11-01“…Method of calculation is proposed and theoretical studies are performed on influence of change of volume flow rate of working medium of shock absorber in MR throttle on forces of resistance to rotation on shaft of shock absorber blade.The results of theoretical research. 1) Results of theoretical studies of change of volume flow rate of working medium of controlled hydraulic blade shock absorber are presented. 2) An adequate mathematical model is obtained that is suitable for calculating the characteristics of controlled (adjustable) hydraulic vane shock absorbers, where magnetorheological fluid is used as the working medium of the shock absorber, as well as for selecting control action in the control system. Conclusion. The results of the study are intended for organizations and enterprises engaged in the development and production of heavy high-speed tracked vehicles.The results of the studies can be used to refine the methodology for estimating the smoothness of the heavy high-speed tracked vehicles.…”
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256
The influence of the mode of engine operation of transport and technological cars on the beating at the coupling piston-cylinder
Published 2019-12-01“…Relocation or beating of the piston occurs due to the action of lateral force in the crank mechanism, which leads to an increase in friction forces and shock loads in conjunction with the sleeve. …”
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257
Presenting the agility model of the organization in order to improve the productivity of human resources
Published 2024-11-01“…One of the parameters proposed to increase flexibility, speed of action, and quality; is organizational agility. …”
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258
An Optimized Path Planning Method for Coastal Ships Based on Improved DDPG and DP
Published 2021-01-01“…Firstly, Long Short-Term Memory (LSTM) is used to improve the network structure of DDPG, which uses the historical state information to approximate the current environmental state information, so that the predicted action is more accurate. On the other hand, the traditional reward function of DDPG may lead to low learning efficiency and convergence speed of the model. …”
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259
A Trajectory Data-Driven Study on the Evolution Mechanism and Control Strategies of Lane-Changing Behavior in Intersection Areas of Expressways
Published 2025-01-01“…After analyzing the sample data using traffic flow theory and statistical theory, the following results were obtained: the speeds increase upon entering and decrease upon exiting weaving zones, while headway distances consistently grow. …”
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260
Inhibitory Control Deficits in Children with Tic Disorders Revealed by Object-Hit-and-Avoid Task
Published 2021-01-01“…In children with tics (without comorbid ADHD), acting upon both targets and distractors suggests reduced ability to suppress responses to potential triggers for action. This may be related to increased sensorimotor noise or abnormal sensory gating.…”
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