Bus drivers often have irregular working hours like split shifts and their work involve high levels of stress. These factors can lead to severe sleepiness and dangerous driving. The purpose of this study is to highlight how split shifts affect sleepiness and performance during afternoon drive. The study is an experiment on real road with an equipped bus driven by professional bus drivers. The s...

Split cuts are among the most important and well-understood cuts for general mixed-integer programs. In this paper we consider some recent generalizations of split cuts and compare their relative strength. More precisely, we compare the elementary closures of split, cross, crooked cross and general multi-branch split cuts as well as cuts obtained from multi-row and basic relaxations. We present...

Model based feedback control strategies for electrohydraulic braking and active steering systems in passenger cars are considered. Simulation results with a complex vehicle model and measurements from test drives with a real car are shown for brake control. For a μ-split road surface additional drive dynamics control is required like ESP or active front steering (AFS). Therefore, an AFS feedbac...

In this study, the distribution of shopping centers is optimized in terms of realizing the shortest car-based shopping trips in an urban area. Modal split is performed between road and public traffic networks is calculated, and then the interaction between land-use and transportation in the context of choice of shopping destinations is modeled to build the optimal function. Parallel genetic alg...

Gaussian split Ewald (GSE) is a versatile Ewald mesh method that is fast and accurate when used with both real-space and k-space Poisson solvers. While real-space methods are known to be asymptotically superior to k-space methods in terms of both computational cost and parallelization efficiency, k-space methods such as smooth particle-mesh Ewald (SPME) have thus far remained dominant because t...

Because of the nonlinear feature tire force, anti-lock braking system (ABS) research based on wheel slip control (WSC) is widely used even without measured and road friction. Combined with WSC technology, four-wheel ABS fuzzy sliding mode (FSM) method introduced in this paper. Unlike most single-wheel independent ABS, design has more advantages when under unusual conditions, such as transition ...

Vehicle re-identification is key to keep track of vehicles monitored by a multicamera network with non-overlapping views. In this paper, we propose a probabilistic framework based on a two-step strategy that re-identifies vehicles in road tunnels. The first step consists of splitting the re-identification problem by connecting groups of vehicles observed in different cameras using certain motio...

In this paper, we discuss an extension of split cuts that is based on widening the underlying disjunctions. That the formula for deriving intersection cuts based on splits can be adapted to this case has been known for a decade now. For the first time though, we present applications and computational results. We further discuss extensions of the existing theory with respect to cut strengthening...

This thesis describes describes a small number of problems arising from the applied study of networks in various contexts. The work can be split into two main areas: telecommunications networks (particularly the Internet) and road networks. In the area of telecom networks, this research focuses on current mathematical developments concerning long-range dependence (LRD). LRD is a statistical phe...