Adolfas Baublys

Principles for Modelling Technological Processes in Transport Terminal

A technological process is evaluated as a random process and assessed in respective models. The methodology of formalizing technological processes in the terminal and criteria for optimal control and the quality of the technological process are suggested. In addition, models and algorithms for the optimal control of freight clearing technological process are proposed.

Mobile solutions in road transport

Abstract The article dwells on the aspects of mobile solutions of public information and transport. The work presents major decision making principles based on object positioning and a system of positioning‐based GSM solutions. The newly developed remote identification systems for transport facilities and goods and passenger transport and their schematic view are presented. The main units of the remote identification system of vehicles and goods embrace: TI portal, TVIM portal, content control system (SMS, GPRS), mobile phone, the unit for stating the geographical position of vehicles and goods. Portals are designed so that the data provided by various systems of observation, such as GSM, GPS, WLAN, wireless internet, etc., can be used there. Portals (TI and TVIM) can also be used for testing, complex evaluation of monitoring functions as well as for providing the data on geographical location of objects, transmitting data to mobile telephones, etc. Purposes and functions of the portals are presented. The...

Model for distribution of warehouses in the commercial network in optimising transportation of goods

Abstract A model for distribution of warehouses in the commercial network in optimising transportation of goods has been established. The target function in the model includes: fixed prices for construction of big and small warehouses; variable prices for transportation of raw materials and goods between warehouses and commercial points. The algorithm was created for optimisation of local roads network between commercial points. As substantiated, if density of distribution of target function values in the zone of extreme is fairly high, the independent random search is sufficiently effective even when comparing it with regular methods.

Improvement of external transport cost evaluation in the context of Lithuania’s integration into the European Union

This paper starts by reviewing the main components of social marginal costs and environmental costs in the context of transport, and it draws on the experience in Europe concerning the means by which these costs can be valued. That experience is then translated to the situation in Lithuania, where many of the same issues are now being debated. A multicriteria method is proposed to internalize these costs, both from the perspective of the state and of the carriers. Costs need to be raised substantially if the social and environmental factors are to be paid for by the transport users, and such action would bring Lithuania closer to the best practice currently in operation in the European Union.

Models of freight transport system development

Abstract The article analyses the following issues: I) Basicfactors determining Transport system development;2) Transport system services and their assessment; 3) Goods handling Transport system as a research object. The objective of goods handling Transport system development and improvement is to estabhsh a general goods handlmg Transport system of the country ensuring satisfaction of national needs for high quality Transport service in this field; 4) Models of Transport modes interaction; 5) Determinate models for main Transport network development; 6) Model of development of private freight road Transport.

Improvement of freight transport technologies and implementation of new technologies

Abstract The synthesis of regional (urban) road transport freight system topological structure enables the assessment of impact exercised by various structural characteristics on the functioning of the system. For this reason the quality of project solutions in the stage of system structural synthesis increases. Models of optimisation and simulation (included into the simulation procedure of optimisation of topological structure) have other possibilities as well. For instance, simulation model enables the solution of such various objectives of functional analysis of systems as, for example, the efficiency comparison analysis of stability of structure undergoing the changes of meanings of system parameters, the analysis of managing impacts of various types, loading technologies, etc.

SYNTHESIS OF THE TOPOLOGICAL STRUCTURE OF ROOD FREIGHT TRANSPORT SYSTEM

Synthesis of regional road transport freight systems topological structure enables the assessment of impact exercised by various structural characteristics on the functioning of the system. Consequently, it should increase the quality of project solutions in the stage of system structural synthesis. Models of optimization and simulation (included into the simulation procedure of optimization of topological structure) have other possibilities as well. For instance, simulation model enables the solution of various objectives of functional analysis of systems, such as the efficiency comparison analysis of stability of structure undergoing the changes of meanings of systems parameters, the analysis of managing impacts of various types, loading technologies, etc.

MODELLING OF FREIGHT FLOWS DISTRIBUTION AT THE TRANSPORT TERMINAL

Abstract The task model has been formulated for users of freight flows at a distribution transport terminal, which enables gauging vehicles possibilities (dimensions, carrying capacity), delivery time limitations, resources of vehicle time and general costs. The synthesis of the topological structure of the freight road transport regional system has been performed. It enables the evaluation of an impact on the functioning of the system exercised by various structural system characteristics, thus improving the quality of project solutions at the stage of synthesis of the system structure.