Since road accident analyses and reconstructions are increasinglybased on specific computer software for simulationof vehicle d1iving dynamics and collision dynamics, and forsimulation of a set of trial runs from which the model that bestdescribes a real event can be selected, the paper presents anoverview of some computer software and methods available toaccident reconstruction experts. Besides being time-saving,when properly used such computer software can provide moreauthentic and more trustworthy accident reconstruction, thereforepractical experiences while using computer software toolsfor road accident reconstruction obtained in the TransportSafety Laboratory at the Faculty for Maritime Studies andTransport of the University of Ljubljana are presented and discussed.This paper addresses also software technology for extractingmaximum information from the accident photo-documentationto support accident reconstruction based on the simulationsoftware, as well as the field work of reconstruction expertsor police on the road accident scene defined by this technology.

The design of delivery districts is a continuous task of postaltechnology because migration of population, construction ofbuildings and traffic routes etc. change the quantity and stJuctureof postal items thus significantly influencing the delivery effeet. In solving the problem of designing the delive1y areas ofpublic postal operator the key values are the quantity of postalitems, length of delivery route and load (effect) of the can·ier.Delivery district borders have to be adequately determined andthey should be relatively uniform in order to achieve rationalizationand to balance the load on the can·ier. To gather thedata about the postal centre area, a model of AHP method applicationhas been set, in which the optimal solution of organizingdelive1y areas is selected by means of the multi-criteria analysisof alternative solutions.

Hydrogen is the fuel of the future, since it is the element ofwater (H20) whichsun·ounds us and the resources of which areunlimited. First water is divided into hydrogen and oxygen. Thepaper presents the laboratory and industrial methods of obtain·ing hydrogen, types of fuel cells for various purposes, hydrogen-propelled motor vehicles, as well as advantages and drawbacksof hydrogen used as fuel under the conditions that haveto be met in order to use it as propulsion energy for motor vehicles.

In order to ensure a more efficient and successful managementof organisational and business systems a vast amount oftheoretical and practical instructions, techniques, methods, etc.are being offered nowadays. Without the knowledge and the applicationof the science of systems thinking we would not be in aposition to integrate the theory and practise into a single, so-called unintenupted inter-dependant dynamic process. Preciselythese (quotidian) processes give namely rise to complexproblematic situation, which cannot be solved by applying thesimple and in many cases already outdated methods.Therefore, the starting points of our research have beenbased on transcending merely conventional methods of the organisationstudy and we directed our efforts towards the intricacy- complexity1, that is, the one that we detect in theapplicative example of the problematics related to railway activities.In this manner we will for the first time represent somekey findings of several years of investigations (Rosi, 2004) andemergence of a new and original methodology of dialectic networkthinkintf in solving the complex (business) problems orproblematics that arise from them ( = interconnections, systemof problems).

The paper deals with the problems that have arisen due tothe rapid development of nautical tourism on the Croatiancoast. The fact is that Croatia, unlike other Mediten·aneantourist countries still does not control nautical tourism developmentin the sense of spatial planning and implementation ofspecific laws. There are other problems that are generated bythe growing number of tourists in Croatian marinas and unevengeographic distribution of ports.

Since ancient times human lives pulsed between two poles- moving and stationmy. Moving as element of functioning issupplemented by standing. Today, when modem life in cities isbased on using passenger cars as the dominant means of mobility,the explosion of their number is the generator of the growingproblems both of the moving and of the stationary traffic. Consideringparking as direct product of the moving traffic, usuallyits negative characteristics are mentioned such as greater volumeof parking, fines, legal-regulative and safety aspects, degradationof other swfaces by the parked vehicles, etc. Never oralmostnever does one speak about the origin of the problem, andthis would be the only way to find its solution.

Videoconferencing is the best-known form of teleconferencing.It allows concwrent transmission of images and soundvia computer network for the communication of several personsphysically distant in real time. The computers are networkedand additionally equipped with camera, microphone,voice and video card, and adequate programmes. Video signalsare digitized and compressed before network transmission. Studentsand lecturers may lead discussions and exchange documentsand other malelials via the computer.