Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 84 for “"Road Surface"”.
-
Simultaneous Three-Dimensional Mapping and Geolocation of Road Surface
… a simultaneous 3D mapping and geolocation of road surface technique that combines local road surface mapping and global camera localization. The local road surface is generated by structure from motion (SFM) with multiple views and optimized by Bundle Adjustment (BA). A system is developed for …
-
Real-Time Implementation of Road Surface Classification using Intelligent Tires
… demand for additional information about tire-road interaction to improve the performance of the onboard chassis control systems, is high. This is due to the fact that the interaction between the tire and the road surface determines the stability boundary limits of the vehicles. In this …
-
Degenerate Near-planar Road Surface 3D Reconstruction and Automatic Defects Detection
… approach to reconstruct degenerate near-planar road surface in three-dimensional (3D) while automatically detect road defects. Three techniques are developed in this dissertation to establish the proposed approach. The first technique is proposed to reconstruct the degenerate near-planar road …
-
The evaluation and modification of a prediction model for road surface temperatures
One version of a Surface Temperature Prediction Model has been evaluated and modified to precisely predict road temperatures and road conditions during winter nights under all weather conditions at rural, suburban, and urban sites. The Partial Differential Equation approach gives encouraging …
-
Road Surface Measurement and Multi-Scale Modeling of Rubber Road Contact and Adhesion
A major challenge in tire, as well as in road engineering, is to understand the intricate mechanisms of friction. Pavement texture is a feature of the road surface that determines most tire-road interactions, and can be grouped into two classes: macro-texture, resulting mainly in the hysteretic …
-
THE EFFECT OF SYNOPTIC SCALE WEATHER AND TOPOGRAPHY ON ROAD SURFACE TEMPERATURES IN DEVON
Microclimates of various road weather stations in Devon were examined. Road surface temperatures were measured during various synoptic conditions. Data from the thermal mapping exercise conducted by Vaisala TMI were analysed and categorised as clear and calm, cloudy and windy, and a condition …
-
FORECASTING WINTER ROAD CONDITIONS: A DATA-DRIVEN APPROACH
… vehicle crashes happen on snowy, slushy, or icy roads in the United States. Accurate prediction of road surface temperatures and conditions is crucial for ensuring safe and efficient transportation, especially during winter. In this study, we developed machine learning and computer vision models …
-
Effects of stabilizer bars on road vehicle ride quality
In an effort to improve the safety and road-holding capabilities of vehicles, manufacturers have begun a trend toward increasing vehicle body roll resistance by introducing stiffer roll-stabilizer bars. In this study vehicle suspension and road surface models are developed to investigate the …
-
Robust Multisensor-based Framework for Efficient Road Information Services
… intelligent transportation systems of future road traffic monitoring will be required to provide reports of road conditions. Monitoring road surface conditions benefits drivers and the community. Road surface anomalies contribute to increased risk of traffic accidents, reduced driver comfort …
-
On the utilization of Simultaneous Localization and Mapping(SLAM) along with vehicle dynamics in Mobile Road Mapping Systems
Mobile Road Mapping Systems (MRMS) are the current solution to the growing demand for high definition road surface maps in wide ranging applications from pavement management to autonomous vehicle testing. The focus of this research work is to improve the accuracy of MRMS by using the principles of …
-
Assessing Efforts To Reduce Sediment Impacts In Cottonwood Creek, Blackfoot Basin, Montana
… long-term reductions in sediment load from road surface erosion and possible culvert failures. Suspended sediment and turbidity measurements were taken during spring snowmelt the year before and after a culvert replacement by a bridge, and during the replacement activity. The two study years …
-
Assessing Efforts To Reduce Sediment Impacts In Cottonwood Creek, Blackfoot Basin, Montana
… long-term reductions in sediment load from road surface erosion and possible culvert failures. Suspended sediment and turbidity measurements were taken during spring snowmelt the year before and after a culvert replacement by a bridge, and during the replacement activity. The two study years …
-
Road Features Extraction Using Terrestrial Mobile Laser Scanning System
… key contributions we have made in the field of road feature extraction from LiDAR data. We detail the development of three automated algorithms for the extraction of road features from terrestrial mobile LiDAR data. LiDAR data is a rich source of 3D geo-referenced information whose volume and …
-
Characterization of Structure-Borne Tire Noise Using Virtual Sensing
… related NVH), have resulted in tire road noise as the dominant source of thevehicle interior noise. Generally, vehicle interior noise has two main sources, 1) travellinglow frequency excitation below 800 Hz from road surface through a structure- borne pathand 2) the high frequency …
-
Kontūro atpažinimo metodų taikymas skersinei chromatinei aberacijai šalinti akies dugno vaizduose ir kelio dangos defektams atpažinti /
… are investigated for solving the problem of road surface defect recognition and lateral chromatic aberration in eye fundus images. The recognition of object contours in raster images is relevant in many practical fields: astronomy, meteorology, forensics, warfare, industry, engineering, …
-
The analysis and simulation of the spectral and statistical properties of road roughness for package performance testing
… but is ultimately caused by fluctuations in the road surface. This thesis introduces a universal analysis and classification methodology for discretely sampled road profile data. It originates from the premise that current laboratory simulation of the transport environment, which utilises vehicle …
-
Intelligent Tire Based Tire Force Characterization and its Application in Vehicle Stability and Performance
… The interaction between the tire and the road surface determines the vehicle's ability to accelerate, decelerate and steer. Having information about this interaction in real-time can be very valuable for the on-board advanced active safety systems to mitigate the risks ahead of time and …
-
Quantifying stormwater pollutants and the efficacy of sustainable drainage systems on the R300 highway, Cape Town
… structural and process controls that attenuate surface drainage, improve runoff water quality, provide amenity and deliver ecosystem services. This study characterized the R300 runoff through a sampling program and modelling exercise in order to provide an indication of the ability of SuDS to …
-
A Coupled Tire Structure-Acoustic Cavity Model
… The tire acoustic cavity is excited by the road surface through the contact patch on the rotating tire. The effect of the cavity resonance is that results in significant forces developed at the vehicle's spindle, which in turn drives the vehicle's interior acoustic field. This tire-cavity …
-
Secure and privacy-preserving fog-assisted vehicular crowdsensing
… for automated control as well as analysis of road surface quality. These innovations have thus encouraged and shown the importance of the cloud in providing reliable transport services to clients. Nonetheless, these initiatives have not been without challenges, ranging from mobility support, …
Page 1 of 5