Results 1 to 10 of about 784,260 (281)

Fundamentals of traffic flow [PDF]

Physical Review E, 1997
From single vehicle data a number of new empirical results concerning the density-dependence of the velocity distribution and its moments as well as the characteristics of their temporal fluctuations have been determined. These are utilized for the specification of some fundamental relations of traffic flow and compared with existing traffic theories.
A. D. May, C. Wagner, D. Helbing, D. Helbing, D. Helbing, D. Helbing, Dirk Helbing, K. Nagel, K. Nagel, M. Y. Choi, R. Kühne, S. Yukawa, T. Musha, X. Zhang   +13 more
openaire   +4 more sources

Determination of traffic flow parameters in different traffic flow interaction cases [PDF]

Transport, 2007
Modelling of straight road section consisting of one traffic line gives the opportunity to simulate “follow the car” system. In general it looks like a line of vehicles, going one after another.
Raimundas Junevičius, Marijonas Bogdevičius   +1 more
doaj   +5 more sources

Research on traffic state prediction method based on traffic flow prediction under multi-time granularity [PDF]

Scientific Reports
Accurate traffic state prediction is of great significance to effective traffic planning and management. The different characteristics of different sections and time-varying traffic patterns pose a challenge to the accurate prediction of traffic ...
Yue Chen, Jian Lu
doaj   +2 more sources

Terminal Traffic Situation Prediction Model under the Influence of Weather Based on Deep Learning Approaches

Aerospace, 2022
In order to quantify the degree of influence of weather on traffic situations in real time, this paper proposes a terminal traffic situation prediction model under the influence of weather (TSPM-W) based on deep learning approaches.
Ligang Yuan, Yang Zeng, Haiyan Chen, Jiazhi Jin   +3 more
doaj   +1 more source

Aircraft rerouting and rescheduling in multi-airport terminal area under disturbed conditions [PDF]

MATEC Web of Conferences, 2020
The disturbances, caused by resource competition, weather changes, and demand uncertainties, frequently occur and result in obvious fluctuations (e.g., the increase or decrease of demand and capacity) in demand and capacity.
Ma Yuanyuan, Hu Yuxin, Li He, Yan Yongjie, Yin Jianan   +4 more
doaj   +1 more source

A Real-Time Trajectory Prediction Method of Small-Scale Quadrotors Based on GPS Data and Neural Network

Sensors, 2020
This paper proposes a real-time trajectory prediction method for quadrotors based on a bidirectional gated recurrent unit model. Historical trajectory data of ten types of quadrotors were obtained. The bidirectional gated recurrent units were constructed
Zhao Yang, Rong Tang, Jie Bao, Jiahuan Lu, Zhijie Zhang   +4 more
doaj   +1 more source

Adaptive Collision Avoidance for Multiple UAVs in Urban Environments

Drones, 2023
The increasing number of unmanned aerial vehicles (UAVs) in low-altitude airspace is seriously threatening the safety of the urban environment. This paper proposes an adaptive collision avoidance method for multiple UAVs (mUAVs), aiming to provide a safe
Jinpeng Zhang, Honghai Zhang, Jinlun Zhou, Mingzhuang Hua, Gang Zhong, Hao Liu   +5 more
doaj   +1 more source

Co-Forecasting for Multi-modal Traffic Flow Based on Graph Contrastive Learning [PDF]

Jisuanji kexue, 2023
An accurate traffic flow prediction in urban areas is of important significance to provide guidance for urban vehicle scheduling and public transportation system optimization.So far,most existing traffic flow prediction methods only consider a single ...
XIAO Yang, QIN Jianyang, LI Kenli, WANG Ge, LI Rui, LIAO Qing
doaj   +1 more source

Airport Arrival Flow Prediction considering Meteorological Factors Based on Deep-Learning Methods

Complexity, 2020
This study presents a combined Long Short-Term Memory and Extreme Gradient Boosting (LSTM-XGBoost) method for flight arrival flow prediction at the airport. Correlation analysis is conducted between the historic arrival flow and input features.
Zhao Yang, Yifan Wang, Jie Li, Liming Liu, Jiyang Ma, Yi Zhong   +5 more
doaj   +1 more source

Impact Analysis of Demand Management on Runway Configuration in Metroplex Airports

IEEE Access, 2020
Congestion in airports and metroplexes is increasingly becoming a key bottleneck in the global air transport system. It is largely due to inefficient utilization of runway resources and its consequences of imbalance between demand and capacity.
Jianan Yin, Yuanyuan Ma, Wen Tian, Dan Chen, Yuxin Hu, Washington Ochieng   +5 more
doaj   +1 more source