Model for Dimensioning Technology and Capacity of Border Railway Stations

The participation of the national rail networks in the European corridors requires certain modifications and their redefinition. Because the railway stations are special parts of the railway networks, they should be modernized, especially in south-eastern Europe. The main issue in the process of construction or reconstruction of railway stations is dimensioning (projection) of infrastructure facilities. The dimensioning of the infrastructure capacity is in direct correlation with the projected technology of work and the planned volume of traffic. This paper presents the simulation model which allows sizing facilities of border rail stations on the basis of the defined work and traffic technology

Modeling evaluation of the size of countries (regions) using fuzzy logic

Countries (regions) size rating is based on various parameters: area, population, population density, economic development (GDP, GDP per capita etc.), natural resources, markets, etc. The most common rating is based on the area of the country (km2). The values defining at the transition between the levels (classes), has a large level of subjectivity present, and the classes are more often contradictory. Countries classification as 'Small', 'Medium' or 'Large' more often is subject for discussions and mutual disagreements. Fuzzy logic is a superset of conventional (Boolean) logic that has been extended to handle the concept of partial truth - truth values between 'completely true' and 'completely false'. As its name suggests, it is the logic underlying modes of reasoning which are approximate rather than exact. The importance of fuzzy logic derives from the fact that most modes of human reasoning and especially common sense reasoning are approximate in nature. This paper presents a model for size evaluation of countries (regions) using Fuzzy logic. Input and output variables are defined. Input variables are: area, population and population density of countries (regions) and the output variable is the size evaluation of the country (small, medium or large)