Cruise ships arriving in ports carry approximately 1000%3000 passengers and crewmembers. Such a concentration of people presents a high degree of risk in the event of a major disaster. To avoid the possibility of hazard events, the safety assessment is a mandatory document for every cruise ship. One of the methodologies for the systematic assessment of risk is a Formal Safety Assessment, a tool to determine and evaluate the risk of potential hazards. Deviations from predicted events could occur underway as well as at a port. Passenger terminals located in close proximity to other cargo terminals are additionally influenced by risks that are not manageable by the cruise ship safety management system. Possible accidents on cargo terminals, oil spills or fires could influence the safety of other ships and environment. A general approach is presented and discussed with particular focus on the specifics of the particular port, where the passenger terminal is close to other cargo terminals. The paper discusses the diverse aspects of safety analysis and methods for evaluation of individual and social risk.
COBISS.SI-ID: 2597731
The large deflection of an elastic cantilever rod pulled by cable is analysing in terms of the Jacobi elliptical functions. The problem is reduced to solution of a system of two transcendental equations which allow defining six different problems. All these problems are discussions and illustrated with graphs of equilibrium shapes and tables providing some reference numerical values.
COBISS.SI-ID: 2555747
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 Markovchain 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
This work describes a new technology for safer berthing at container terminals—laser ranging and laser docking, integrated with metocean data. What may seem a simple process, and perhaps at times is, nonetheless is potentially hazardous to the environment and to personnel. This timing of the development of this system is all the more serendipitous as the pressures of the port to take in larger ships continues, particularly container vessels. Adaptation of the port was made possible by a complex set of technologies, ranging from simple dredging to the sophisticated presentation of data to the pilots and to the maritime authorities.
COBISS.SI-ID: 2820451
The paper shows that road geometry has a great impact on overall fuel consumption and emissions. Some roads connect traffic origins and destinations directly, while some take winding, indirect routes. Indirect connections result in longer distances driven and increased fuel consumption. A similar effect is observed on congested roads with stop and go traffic and on mountain roads with many changes in elevation. In this light, we propose a methodology for analysis of road networks based on energy consumed by the vehicles and the energy needed to build more efficient connections. This framework takes into consideration traffic volume, shares of vehicle classes, road geometry and energy needed for road operation and construction. Its application was illustrated through two case studies, one with macroscopic traffic data and one with microscopic traffic simulation that can also be applied for urban road network optimization.
COBISS.SI-ID: 30635815
Experimental results obtained during live GNSS jamming tests performed in a road environment. Different jamming detection strategies are considered with specific focus on signal agnostic approaches where no stringent model assumptions are made for the detector design. A measurement station made of a commercial GPS high-sensitivity receiver and an SDR front-end was deployed and used to collect measurements in the presence of jamming. The tests were performed using three different jammers and considering the effects introduced by a vehicle moving at different speeds. The advantages and shortcomings of the different detection approaches are analyzed, and the most effective detection strategies are selected.
COBISS.SI-ID: 2813283
A mathematical model for the dynamics of river vessels was derived. A standard 3D model / geometry of the river vessel has been developed and its resistance coefficient determined according to the incidence angle of the liquid.
COBISS.SI-ID: 2808931
A model for determining truck stability during driving under the influence of strong winds is shown.
COBISS.SI-ID: 2805603
In this paper, a solution for the equilibrium configuration of an elastic beam subject to three-point bending is given in terms of Jacobi elliptical functions. General equations are derived, and the domain of the solution is established. Several examples that illustrate a use of the solution are discussed. The obtained numerical results are compared with the results of other authors. An approximation formula by which the beam load is given as a polynomial function of beam deflection is also derived. The range of applicability of the approximation is illustrated by numerical examples.
COBISS.SI-ID: 2555491