Background: HIV thrives on mobile population. Truck drivers particularly the long distance truck drivers are more vulnerable to HIV infection, because they travel a lot, remain cut off from the mainstream society, often engage in activities such as having unsafe sex with commercial sex workers and fellow crew members, in order to reduce their loneliness. Material & Methods: In this study 75 tru...

BACKGROUND Professional truck drivers, as other shift workers, have been identified as a high-risk group for various health conditions including cardiovascular disease, obesity, diabetes, sleep apnoea and stress. Mobile health technologies can potentially improve the health and wellbeing of people with a sedentary lifestyle such as truck drivers. Yet, only a few studies on health promotion inte...

Global Navigation Satellite System (GNSS) data is an inexpensive and ubiquitous source of activity data. Positioning (GPS) example such Although there have been several studies about inferring device using GPS from a consumer device, freight presents unique challenges for having low variable frequency, long transmission gaps, frequent unpredictable ID resetting preserving privacy. This study ai...

Carriers are under increasing pressure to offset rising fuel charges with cost cutting or revenue generating schemes. One opportunity for cost reduction lies in asset management. This paper shows how a machine scheduling approach can be used to assign truck loads to delivery times and trucks. We present several models to find optimal assignments when delivery times are flexible. The models have...

A new templating motif for the formation of [2]pseudorotaxanes is described in which rigid, Y-shaped axles with an imidazolium core and aromatic substituents at the 2-, 4- and 5-positions interact with [24]crown-8 ether wheels ([24]crown-8 and dibenzo[24]crown-8). The Y-shape of the axle significantly enhances the association between axle and wheel when compared to simple imidazolium cations.

Logistics has to deal with dynamics and uncertainties. In order to cope with such problems we introduce a communication-based approach built on distributed autonomous systems. In this work graph transformation with autonomous units is used as a rule-based instantiation of multi-agent systems to model logistic systems. The approach will be presented using a scenario taken from transport logistic...

One opportunity to manage the increase of freight transportation and to optimize utilization of motorway capacities is the concept of truck platoons. With the aid of Advanced Driver Assistance Systems, trucks are electronically coupled keeping very short gaps (approx. 10 meters) to form truck platoons on motorways. This contributes to optimisation of traffic flow and reduction of fuel consumpti...

The objective of this study was utilized the head and eye-tracker system to examine the effects of visual field between sedan and mixed concrete truck on road sign recognition. Participants were asked to search the traffic signs on driving video and give a verbal report instantaneously for visual search. Results of ANOVA revealed that the mode of vertical direction of eye gaze were significant ...

We determine the efficiency of a delivery system in which an unmanned aerial vehicle (UAV), or a fleet of UAVs, provides service to customers while making return trips to a truck that is itself moving. In other words, a UAV picks up a package from the truck (which continues on its route), and after delivering the package, the UAV returns to the truck to pick up the next package. Although the ha...

We study an integrated quantity discount and vehicle routing problem where truck utilization is increased by building multi-stop routes and increasing order sizes through a purchase incentive. We model the problem and prove it to be NP-hard. Our experiments show that commercial solvers do not effectively solve instances with more than ten buyers. We propose the use of non-compromising route eli...