Trajectory clustering can identify the flight patterns of air traffic, which in turn contributes to airspace planning, traffic flow management, and time estimation. This paper presents a semantic-based trajectory method for arrival aircraft via new proposed representation. The consists four significant steps: representing trajectories, grouping trajectories based on representation, measuring si...

Some traffic monitoring systems have been proposed for predicting behaviors of vehicles. However, a few attempts have been made at estimating how vehicles influence each other at some time point in the near future. In order to estimate such interactions, we introduce a concept of Attainable Region to predict future behaviors of vehicles. Attainable Region is efficient to estimate interactions b...

Airbus, the European aircraft manufacturer has started a program for developing the biggest aircraft ever built: the Airbus A380 which will be able to carry 550 passengers on two decks in the three classes version (Figure 1). The six components of the airplane (two wings, rear, central and front fuselages, and horizontal tail plane) are to be produced in different European cities (Figure 2). Th...

Nowadays, the ubiquity of various sensors enables the collection of voluminous datasets of car trajectories. Such datasets enable analysts to make sense of driving patterns and behaviors: in order to understand the behavior of drivers, one approach is to break a trajectory into its underlying patterns and then analyze that trajectory in terms of derived patterns. The process of trajectory segme...

This paper presents the time optimal trajectories for differential drive vehicles in the unobstructed plane. The wheel angular velocities are bounded, but may be discontinuous. The paper proves the existence of optimal controls, derives the structure of optimal trajectories, and develops an algorithm for producing a time optimal trajectory between any two configurations. Every nontrivial optima...

By taking the high-energy limit of the two-loop amplitudes for parton-parton scattering, we have tested the validity of the loop expansion of the high-energy amplitude, arising from a reggeized gluon passed in the crossed channel. As expected, we have found that it holds at LL and NLL accuracy, and hence we have independently re-evaluated the two-loop Regge trajectory, finding full agreement wi...

We present in this paper the behavior of an artificial agent who is a member of a crowd. The behavior is based on the social comparison theory, as well as the trajectory mapping towards an agent’s goal considering the agent’s field of vision. The crowd of artificial agents were able to exhibit arching, clogging, and bursty exit rates. We were also able to observe a new phenomenon we called doub...

Trajectories have been providing us with a wealth of derived information such as traffic conditions and road network updates. This work focuses on deriving user profiles through spatiotemporal analysis of trajectory data to provide insight into the quality of information provided by users. The presented behavior profiling method assesses user participation characteristics in a treasurehunt type...

In this paper, trajectory generation for the 4 DOF arm of SURENA III humanoid robot with the purpose of optimizing energy and avoiding a moving obstacle is presented. For this purpose, first, kinematic equations for a seven DOF manipulator are derived. Then, using the Lagrange method, an explicit dynamics model for the arm is developed. In the next step, in order to generate the desired traject...