Transactions on Transport Sciences, 2012 (vol. 5), issue 2
Stochastic Analysis of a Queue Length Model Using a Graphics Processing Unit
J. Přikryl, J. Kocijan
Transactions on Transport Sciences 2012, 5(2):55-62 | DOI: 10.2478/v10158-012-0007-2
Mathematical modeling is an inevitable part of system analysis and design in science and engineering. When a parametric mathematical description is used, the issue of the parameter estimation accuracy arises. Models with uncertain parameter values can be evaluated using various methods and computer simulation is among the most popular in the engineering community. Nevertheless, an exhaustive numerical analysis of models with numerous uncertain parameters requires a substantial computational effort. The purpose of this paper is to show how the computation can be accelerated using a parallel configuration of graphics processing units (GPU). The assessment...
A New Impact Simulation Device for Testing Passive Safety Equipment
Transactions on Transport Sciences 2012, 5(2):63-70 | DOI: 10.2478/v10158-012-0008-1
The described device presents a cheap improved system for routine impact tests. The impacts are simulated by cart accelerations. The necessary energy is accumulated in rubber ropes. The required shape of acceleration curve is achieved with replaceable cams. The reactive acceleration force moves the drive system in the opposite direction on the base, which is shaped as an inverted box. Its walls are sealed in contact with the floor. The inner space of the "box" is empty. Therefore, the total "weight" increases. The recoil is limited by springs and hydraulic shock absorbers. For easy replacement of the device in the test room area the lifting function...
Methods for Solving Discrete Optimization Problems
Transactions on Transport Sciences 2012, 5(2):71-82 | DOI: 10.2478/v10158-012-0009-0
The article specifies a group of discrete optimization problems, such as location problems and tour problems, from the aspect of individual approaches (exact, heuristic, and metaheuristic) and seeks to explain all the approaches on specific problems.
Distraction of Drivers: Causes, Effects, Prevention
J. Šmolíková, J. Hoskovec, J. Štikar
Transactions on Transport Sciences 2012, 5(2):83-90 | DOI: 10.2478/v10158-012-0010-7
This paper concerns definitions, theory, causes, effects, and prevention of driver distraction. Internal and external stimulation on driver attention are analyzed. The simulation of driving is compared with driving under real conditions. The characteristics of older, as well as younger, drivers are given. The perspectives of preventive measures are presented from a technical, cognitive, and behavioural point of view.
Experimental Research on the Parameters of Electric Vehicles
R. Čech, P. Tomčík, J. Kulhánek, R. Trojan
Transactions on Transport Sciences 2012, 5(2):91-98 | DOI: 10.2478/v10158-012-0011-6
This paper describes the methodology and measured results obtained by monitoring the drive and electric vehicle management. It describes an application for recording functional values during the operation of The StudentCar Electric developed by the Department of Vehicle Materials and Technologies. The end of the article is devoted to the comparison of measured and generally available data.
A Strategic Approach to the Transformation of Czech Highway Administration
K. Pospíšil, D. Mečiarová, A. Hanzelková, M. Keřkovský
Transactions on Transport Sciences 2012, 5(2):99-110 | DOI: 10.2478/v10158-012-0012-5
Studies of the current condition of management in the Czech Republic show, that strategic management is one of the greatest weaknesses in the management of Czech businesses when compared with their western competitors. The intended transformation of the Czech highway administration from the existing state allowance organisation to a company with a new legal status is an excellent opportunity to design a strategically oriented and well-organised body which will be capable to be effective in strategic development, investment, maintenance, and operation of the managed highway network. At the Brno International Business School considerable attention has...