Results 31 to 40 of about 1,361,788 (289)

A two-dimensional data-driven model for traffic flow on highways

open access: yesNetworks and Heterogeneous Media, 2018
Based on experimental traffic data obtained from German and US highways, we propose a novel two-dimensional first-order macroscopic traffic flow model. The goal is to reproduce a detailed description of traffic dynamics for the real road geometry. In our
Michael Herty   +2 more
doaj   +1 more source

A Trajectory Big Data Storage Model Incorporating Partitioning and Spatio-Temporal Multidimensional Hierarchical Organization

open access: yesISPRS International Journal of Geo-Information, 2022
Trajectory big data is suitable for distributed storage retrieval due to its fast update speed and huge data volume, but currently there are problems such as hot data writing, storage skew, high I/O overhead and slow retrieval speed.
Zhixin Yao   +3 more
doaj   +1 more source

GeoSOT-Based Spatiotemporal Index of Massive Trajectory Data

open access: yesISPRS International Journal of Geo-Information, 2019
With the rapid development of global positioning technologies and the pervasiveness of intelligent mobile terminals, trajectory data have shown a sharp growth trend both in terms of data volume and coverage.
Chunyao Qian   +5 more
doaj   +1 more source

Method for quickly building road network model of open-pit mine based on grid refinement

open access: yesMeitan xuebao
Constructing the road network in open-pit mining areas is a crucial step for intelligent scheduling and autonomous driving of trucks in these regions. However, given the intricate road conditions, extensive GPS trajectory data from mining vehicles, and ...
Qinghua GU   +5 more
doaj   +1 more source

Improving Motorway Mobility and Environmental Performance via Vehicle Trajectory Data-Based Control

open access: yesIEEE Access, 2020
High cost and relatively low reliability of stationary sensors hinder the wide spread of advanced motorway traffic control measures. In this research, we propose a vehicle trajectory data based variable speed limit (VSL) controller to improve mobility ...
Yifei Zhao   +4 more
doaj   +1 more source

Research on the Method of Urban Jobs-Housing Space Recognition Combining Trajectory and POI Data

open access: yesISPRS International Journal of Geo-Information, 2021
With the gradual emergence of the separation and dislocation of urban jobs-housing space, rational planning of urban jobs-housing space has become the core issue of national land-spatial planning. To study the existing relationship between workspaces and
Ya Zhang   +4 more
doaj   +1 more source

Oddballs and a Low Odderon Intercept [PDF]

open access: yes, 2005
We report an odderon Regge trajectory emerging from a field theoretical Coulomb gauge QCD model for the odd signature JPC (P=C= -1) glueball states (oddballs).
E. R. Berger   +5 more
core   +3 more sources

Tracking Data Trajectories in IoT

open access: yesProceedings of the 5th International Conference on Information Systems Security and Privacy, 2019
The Internet of Things (IoT) devices access and process large amounts of data. Some of them are sensitive and can become a target for security attacks. As a consequence, it is crucial being able to trace data and to identify their paths. We start from the specification language IOT-LYSA, and propose a Control Flow Analysis for statically predicting ...
Bodei C., Galletta L.
openaire   +1 more source

Trajectory Generation for Stair Ascent Walking using Rayleigh Oscillator [PDF]

open access: yes, 2013
This paper describes a trajectory generation technique for stair-ascent walking. The knee, hip and ankle joint trajectory during stair ascent are generated using mutually coupled, nonlinear oscillators.
Afzal, T.   +2 more
core   +3 more sources

Incremental Road Network Update Method with Trajectory Data and UAV Remote Sensing Imagery

open access: yesISPRS International Journal of Geo-Information, 2022
GPS trajectory and remote sensing data are crucial for updating urban road networks because they contain critical spatial and temporal information.
Jianxin Qin   +4 more
doaj   +1 more source

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