The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This study primarily focuses on solving the vehicle routing problem with soft time windows (VRPSTW) by applying an improved double-population genetic algorithm (DPGA). The traditional single-population genetic algorithm (SPGA) in solving vehicle routing problem usually traps in local optimum or consumes considerable time. In this paper two different initialization methods - random initialization method...
Traffic control systems of signalized intersections are naturally hybrid systems, in which vehicle flow behavior can be described by a time-driven model and the traffic light dynamics are modeled as a discrete event system. In this paper, we use hybrid Petri nets (HPNs) to specify traffic and traffic control at an intersection and use a second-order macroscopic model to model the motion of vehicles...
In this paper, based on the analyzing the signal control problem of single intersections, a kind of real-time optimization method with PSO (particle swarm optimization) solving signal timings for single intersection is put forward. On detecting the flow of current cycle and the cycle before, estimating the flow of next circle is proceeded. Setting least delay as performance index, we get each phase...
In view of that there exist some defects when the extended Kalman filter (EKF) is applied in nonlinear state estimations, the square-root unscented Kalman filter (SRUKF), as a new nonlinear filtering method, is introduced to instead of EKF for the state-estimation of the vehicle integrated GPS/DR navigation system. Compared with EKF, SRUKF not only improves the location precision and algorithmic stability...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.