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Because of the economic globalization, products are manufactured in one place and sold all over the world. As freight cost accounts for a large part of the total costs for these products, it plays a more important role in the management of inventory. Recent years, phenomenal growth of successful deployments of innovative pricing strategies in a variety of industries makes scores of retail and manufacturing...
Road traffic congestions are one of the major problems in highly populated cities. In the recent years, GPS based solutions have become popular since people are able to see the traffic flow on streets instantaneously. However such systems are lack of intelligent reasoning regarding the traffic problems. As a result, one cannot anticipate the traffic slowdown duration and overall impact. This study...
Our aim is to develop a bacterial-based swarm algorithm that adjusts the parameter values of a fuzzy model. The bacterial-based swarm algorithm is simplified in order to adjust the parameters of the fuzzy model. The procedure of the bacterial swarm algorithm simulates the movement of an E. coli bacterium through swimming and tumbling in problem search space in order to find the optimal solution. A...
A driver can mask his sleepiness. This study aims to determine effective and reliable indications of a driver's unmasked sleepiness using driver-vehicle data. A Bayesian approach and the signal detection theory were applied to investigate the effectiveness of selected driver-vehicle parameters for this purpose. Twenty subjects participated in three consecutive driving sessions on the simulated 4-lane...
This paper takes pedestrian walking speeds as the research object at the signalized intersection crosswalks. Through on-site investigations and screening four signalized intersections are chosen as the data collection points. Combining the field observations with video footage methods the original data is gotten. Pedestrian speeds are counted. Walking speeds of pedestrians are studied in relation...
Recent years have seen an increasing number of traffic surveillance cameras deployed on the main roads and intersections of metropolitan areas. For large and ediumsized cities, these cameras generate an enormous amount of data. Existing solutions based relational database systems cannot effectively manage and process such large volume of data, nor can they provide support for efficient and scalable...
Vehicle-to-Vehicle (V2V) communication is an en-abler for improved traffic safety and congestion control. As for any wireless system the ultimate performance limit is determined by the propagation channel. A particular point of interest is the shadowing effect of large vehicles such as trucks and buses, as this might affect the communication range significantly. In this paper we present measurement...
The MARIS project arises as initiative of four Departments of Universities which are members of the Inter-University Centre ISME (“Integrated Systems for the Marine Environment”), legally represented by the University of Genoa, and the research unit of Genoa of CNR-ISSIA (”Institute for Studies on Intelligent Systems for Automation?) of the National Council of Research of Italy, with headquarter in...
Often a perfectly functioning software system is misused causing undesirable and expensive consequences. The quest of this work is to prepare a priori the system for eventual extensions that - while not directly relevant to the system purpose - enable overcoming the consequences of its misuse to achieve system resilience. This is attained by means of Software Proactive Reengineering based upon domain...
Considering that the vehicle state error derives from the different initial states and parameters between the real vehicle model and the reference model, fractional sliding model control is proposed for the active four-wheel steering vehicle. Optimal control is adopted to design the sliding mode in order to eliminate the state error caused by the different initial states. On this basis, fractional...
The use of bottom up approach simulation in transportation provides a rich framework for behaviours to emerge through interactions. The agent based modeling is a modeling technique that takes into account the attributes, constraints and variables imposed by the agent and the environment. Focusing on a alternative means of transport and in particular electric vehicles, this paper is taking place. The...
This paper is concerned with the problem of fault detection filter for vehicle active suspension systems. The aim of this paper is to design a fault detection filter in finite-frequency domain. A sufficient condition for residual system with the prescribed H∞ performance index is derived based on the generalized Kalman-Yakubovich-Popov (KYP) lemma. In view of the obtained condition, the fault detection...
The fundamental purpose of the urban road traffic network is to satisfy the resident travel demand. The two parts of the urban residents travel are the transportation medium and the transportation carrier. The vehicles as the transportation carrier running on the urban roads as the transport medium can from the traffic flow. The shortest-distance path usually was selected by the residents to complete...
The tremendous increase of motor vehicles causes serious traffic congestion at the same time, also causes serious pollution to the environment. Using two associated intersections as the research object, considering environmental factors, with the targets of minimizing motor vehicle carbon monoxide emissions and maximizing the total number of people passing the intersection regions, a artery coordination...
The paper describes a video detection method for two-wheeled vehicles appearing especially in the small-medium cities. The multi Gaussian mixture model is used to build the background and foreground. The single threshold method is efficiently used in shadow removal. Then Gaussian smooth filter processing and morphological image processing are used to filter out the noises in the foreground. The target...
A adaptive recursive sliding mode Dynamic Surface Control (DSC) method is proposed for hypersonic vehicle. Based on the hypersonic vehicle model characteristics, the adaptive recursive sliding mode DSC attitude controller and the neural networks dynamic inversion velocity controller are designed, respectively. Via designing recursive sliding mode surface, the tracking error in the preceding step is...
With the fast development and evolution in the vehicle market, the construction and maintenance of the vehicle supply network faces greater challenge, making its modeling and simulation critically important. This paper, aiming at the lack of the precision and wholeness as well as the global visualization, proposed an agent-based vehicle supply model by analysing the objects in the network. The proposed...
This paper designed a typical task oriented adjustable autonomy architecture for autonomy control of unmanned surface vehicle (USV). First a two-dimensional classify method of an adjustable autonomy control level is presented, which is applied to the USV system. Then an index system is established for the autonomy control level assessment of USV, which includes the performance of USV, environmental...
Modeling and simulating of pedestrians movement have attracted much attention because they provide reproducible results, which are important to evaluate evacuation facilities and risks. It is well accepted the movement of individuals is affected by interactions with others and the environment. However, factors affecting the interactions are not fully studied and experiments are needed. This paper...
Vehicle Ad hoc NETworks (VANETs) is an emerging wireless network technology whereby information is generally shared among vehicles through multi-hopping In literature, a number of routing approaches has been proposed for reducing the end-to-end delay. However, the routing approaches applied to support multicast service will be inefficient since none of them considered the share path in VANETs. This...
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