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281
Marine Unmanned Surface Vehicle Measurements of Solar Irradiance Under Typhoon Conditions
Published 2025-05-01“…Autonomous unmanned surface vehicles (USVs) offer transformative potential for collecting marine meteorological data under extreme weather conditions, yet their capability to provide reliable solar radiation measurements during typhoons remains underexplored. …”
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282
Ocean Surface Retracking in Tropical Cyclones With the KaIA Airborne Radar Altimeter
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283
Calculation of Correction Factors for Vickers’ Hardness Measurements on a Non-Planar Surface
Published 2022-10-01“…The sufficiency of using of a quadratic power function for approximating K(d/D) dependences and the necessity of fulfilling the physically justified condition K ≡ 1 at zero curvature of tested surface have been substantiated. Simplification of calculation of K coefficient and decrease of calculation error in comparison with the recommended in the regulatory documents obtaining of K value by linear interpolation relative to two adjacent table values are shown.The reduction of the calculation error in comparison with the calculation recommended in the regulatory documents occurred because of the reason that when calculating by the developed formulas, the error in the value of the calculated for a specific value of d/D coefficient K is averaged over all n values of d/D given in the table of GOST for a given surface. …”
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284
Surface grain-size mapping of braided channels from SfM photogrammetry
Published 2025-07-01“…The calibration curve can be used to determine the surface median grain size with an independent error of 5 <span class="inline-formula">mm</span> (14 % of relative error). …”
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285
SIGNIFICANCE OF SOIL DEVELOMENT AND IRON OXIDES CONTENT ON PROPERTIIES OF PERMENANT CHARGE ON CLAY SURFACES IN SOME SELECTED SOILS FROM NORTHERN IRAQ
Published 2019-08-01“…Results showed that the highest values of permanent negative charge on clay surfaces before removing iron oxides was found in Mukhmour soil with average 34.5 C.mol. kg<sup>-1</sup>. clay, while the lowest values appeared in clay fraction of Zakho soil (18.1 C.mol. kg<sup>-1</sup>. clay), but in Shikhan soil,the negative charge values was at average of (20.0 C.mol. kg<sup>-1</sup> clay). …”
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286
A Comparative Study of RANS and PANS Turbulence Models for Flow Characterization Around the Joubert BB2 Submarine
Published 2025-05-01“…This study presents a comparative numerical investigation of Reynolds-averaged Navier–Stokes (RANS) and partially averaged Navier–Stokes (PANS) turbulence models applied to the Joubert BB2 submarine geometry under steady, calm-water conditions. …”
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287
Spatial and Temporal Analysis of Earthquake Events in Kahramanmaraş on 6 February 2023
Published 2025-01-01“…Ten-week spatial distributions of the aftershocks were examined with the weighted average center method and it was determined that the earthquake intensity and average centers shifted towards the north. …”
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288
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289
Numerical Model of Condensate Water Droplet Motion on Fin Surface under Dehumidifying Conditions
Published 2013-01-01“…With the surface tension is taken into account, which is defined by the contact angle and VOF method, a numerical model of condensate water droplet moving on fin surface is developed. …”
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290
Features of heat transfer and phase-change on a pinned surface at pulse heat release
Published 2024-01-01“…An experimental study was conducted of the boiling characteristics of water subcooled to the saturation temperature during pulsed heating on a smooth surface with a technical roughness of up to 5 μm and on a modified surface with cylindrical pins 200 μm in height and diameter, located at the nodes of a rectangular grid with a step of 400 μm, with an upward flow with a pressure of 0.29 MPa and an average flow velocity of 0.52 m/s. …”
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291
Optimal surface defect detector design based on deep learning for 3D geometry
Published 2025-02-01“…In validation experiments, an average F1 score of 0.932 and an average area under curve of 0.99 were obtained, implying that the proposed algorithm has near-ideal performance.…”
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292
Research on LSTM-PPO Obstacle Avoidance Algorithm and Training Environment for Unmanned Surface Vehicles
Published 2025-02-01“…The current unmanned surface vehicle (USV) intelligent obstacle avoidance algorithm based on deep reinforcement learning usually adopts the mass point model to train in an ideal environment. …”
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293
Impact of Station Relocation on Observed Surface Wind Measurement Data and Its Application Effectiveness
Published 2025-07-01“…Surface wind speed time series from national meteorological stations are frequently utilized in studies of wind climate change analysis, wind energy resource assessment, and engineering considerations for wind resistance. …”
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294
Investigating surface loading effect on seasonal crustal deformation observed by GNSS in Hong Kong
Published 2025-01-01“…Abstract Surface loading effects related to atmospheric, hydrological, non-tidal ocean, are one of the principal sources of the seasonal oscillations in GNSS time series, and it should be taken into account for improving GNSS accuracy. …”
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295
Surface Urban Heat Island In Moscow During The COID-19 Pandemic Lockdown In 2020
Published 2023-01-01“…The influence of the COronaVIrus Disease 2019 (COVID-19) pandemic lockdown (the period of strict quarantine measures) in the spring of 2020 on the ‘Surface Urban Heat Island’ (SUHI) geographical phenomenon in Moscow has been studied. …”
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296
Water Surface Spherical Buoy Localization Based on Ellipse Fitting Using Monocular Vision
Published 2025-04-01“…Spherical buoys serve as water surface markers, and their location information can help unmanned surface vessels (USVs) identify navigation channel boundaries, avoid dangerous areas, and improve navigation accuracy. …”
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297
Measurement of Roughness of Internal Surface of Measuring Pipeline in Real Time for Standard Orifice Plates
Published 2015-12-01“…The new equations for calculating the hydraulic resistance coefficient of friction of natural gas on the internal surface of the measuring pipeline, the average value of natural gas pressure along the section of a measuring pipeline and the equivalent roughness were obtained. …”
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298
Improved faster R-CNN for steel surface defect detection in industrial quality control
Published 2025-08-01“…Abstract Steel surface defect detection constitutes a critical inspection task in industrial production. …”
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299
Research on Surface Defect Detection of Rare-Earth Magnetic Materials Based on Improved SSD
Published 2021-01-01“…In order to overcome the limitation of manual visual inspection of surface defects of rare-earth magnetic materials and increase production efficiency of traditional rare-earth enterprises, a detection method based on improved SSD (Single Shot Detector) is proposed. …”
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300
Optimization of baffle’s height in an asymmetric twin-screw extruder using the response surface model
Published 2024-11-01“…An aqueous solution of sodium carboxymethyl cellulose (CMC-Na) was employed as a matrix fluid, and the red oil-based ink was used as a tracer. A response surface model was constructed to predict the average diameter of droplets in terms of the feed rate, screw speed, and baffle height, and then the corresponding optimal solutions were obtained. …”
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