This study presents dynamic models to forecast container throughput in the North Adriatic ports of Koper, Trieste, Venice, Ravenna, and Rijeka. Based on the numbers derived, we found a simple but efficient model to forecast the likelihood of increasing or decreasing traffic from year to year. The models are prepared based on available data; they are the Markov-chain annual growth rate model, a time-series trend model, a time-series trend model with periodical terms, and the gray system model. In the second part of the study, we explore a model for analyzing cooperation/competition relationships between these ports using a generalized Lotka–Volterra dynamic system.
COBISS.SI-ID: 2649699
Stress analysis of finite plates with arbitrary hole shapes is performed using a mixed analytical-FEM approach. The analytical solution for the infinite plate is corrected using the FEM correction for the finite plate. The analytical method uses a modified Muskhelishvili complex variable method for an arbitrary polygonal hole shape utilizing the Schwarz–Christoffel mapping approach. Later, the FEM correction is calculated for the finite two-dimensional domain with appropriate boundary conditions. Coupled solutions accurately solve the problem of stress concentration at the hole corners. It is impossible to solve stress concentrations accurately using only the finite element method (FEM) approach because the solution is mesh dependent. The proposed method rapidly solves for the stress concentrations with arbitrary accuracy irrespective of hole shape and domain geometry.
COBISS.SI-ID: 2725219
We have analyzed traffic safety records on Slovenian motorways to determine the correlation between traffic safety and traffic flows structure. Then we created safety prediction functions based on traffic volume and traffic structure and separately an ARIMA model. Both approaches predicted deterioration of traffic safety on Slovenian motorways.
COBISS.SI-ID: 2645347
Space-time evolution of oil discharges described by Lagrange two-dimensional model being divided into three phases; gravity-inertial, viscous gravity, tension-viscous. Research proves that through such modelling approach various incident scenarios for a complex set of inputs depending on the area in which the spill occurs can be developed.
COBISS.SI-ID: 2652003
Marine operational oil pollution includes various types of discharges of oil and oily mixtures as a result of ships’ daily routine operations. Paper presents the distribution of the pollution and some correlation towards possible identification of polluters.
COBISS.SI-ID: 2772067