The present study introduced a novel hierarchical hub set covering problem with capacity constraints. This study showed the significance of fixed charge costs for locating facilities, assigning hub links and designing a productivity network. The proposed model employs mixed integer programming to locate facilities and establish links between nodes according to the travel time between an origin-...

Street parking spots for automobiles are a scarce commodity in most urban environments. The heterogeneity of car sizes makes it inefficient to rigidly define fixed-sized spots. Instead, unmarked streets in cities like New York leave placement decisions to individual drivers, who have no direct incentive to maximize street utilization. In this paper, we explore the effectiveness of two different...

exhaust emissions contribute greatly to air pollution, the social cost of which may occur as danger to human health, attracting huge medical expenses, causing absenteeism and hence loss of productivity. these are incentives to reduce exhaust emissions to the barest minimum. two major cities in ghana, accra and kumasi, are struck by vehicular traffic jams especially during rush-hours and are gra...

Plug-in electric vehicles become more attractive with government incentives and policies. Tractable modeling techniques that can incorporate electric vehicles are critical for developing realistic and effective travel behaviors models. It is shown in this paper that the special features of electric vehicles and the limited charging infrastructures lead to different travel behavior of electric v...

This study aimed to collect information on the car use and driving experiences of drivers with spina bifida and hydrocephalus and their disabled and able-bodied peers. A questionnaire was completed by 36 drivers with spina bifida and hydrocephalus (SBH) and two control groups, 36 able-bodied (AB) drivers and 14 drivers with cerebral palsy (CP). Results indicated that although those with SBH and...

• around view system for large vehicles, the methods of calibration and removal of barrel distortion for omnidirectional cameras. Abstract. Driving fraught with an uncontrolled risk of small collisions with other vehicles and pedestrians because of "blind spots": at parking, at exit from a parking lot, while driving in heavy trac of vehicles. For trucks the task of creating 360 • around view sy...

This paper aims to present an intelligent system for parking space detection based on image processing technique. The proposed system captures and processes the rounded image drawn at parking lot and produces the information of the empty car parking spaces. In this work, a camera is used as a sensor to take photos to show the occupancy of car parks. The reason why a camera is used is because wi...