Research of Marine Ferry Systems Based on Discretization pf Processes and Simulation Ferry Market Based on CIRCOS Intensity Graph

There has been a significant increase in the role of sea ferry services today as well as a significant increase in the number of ferry vessels and passenger flow, which requires the development of new practical forecasting methods. The article proposes a new approach to forecasting, which is based on the integrated interaction of the systems «passenger sea port - cruise or ferry lines». This research focused on the regions of the Adriatic and the Baltic Sea and the existing network of cruise and ferry line routes. When studying this system, it was justified to use a new mathematical model based on practical simulation and models of the theory of discrete processes and systems. The proposed model is complemented by a discretization-based study based on the Kotelnikov´s theorem. To reflect the dynamics of changes in such a system, it is proposed to use new diagrams of the intensity represented by circos graphs (diagrams). The article discusses the practical importance of using new circos intensity graphs of sections to study the operation of the «marine terminal - cruise line or ferry line» systems based on real data on the Baltic and Adriatic seas. Based on the simulation results, a new system of corrective actions is proposed to improve the management of marine terminals. It presents new results which can increase the accuracy of the planning and decision-making process in predicting and planning the route network based on the research of passenger traffic between the «sea terminal - cruise line or ferry line» systems

Research and Analysis Container Shipping Line on the Basis of Simulation

Container transport is the main and leading form of transportation in shipping. Selection of the route for each voyage is determined by the nature of the traffic and operating conditions of the fleet. The best way to avoid any inconvenience when solving the predictive task of the liner ships is to use simulation taking into account both deterministic and stochastic processes arising from the operation of liner ships. The article describes a simulation model of a sea container line, for example, the company Fesco, working on a regular container line in St. Petersburg (Russia), using mathematical model and proposed model “follow the leader” to describe the movement of ships. The main task in the simulation is to achieve an optimal balance between ship traffic and the decision on group forecast issues with the composition of the ships on the line

FORECASTING THE OPERATIONAL ACTIVITIES OF THE SEA PASSENGER TERMINAL USING INTELLIGENT TECHNOLOGIES

. Modern transport systems are characterized by the development and implementation of intelligent transport technologies. Today, dynamic forecast models are not used in practice in the operation of a passenger terminal. Decision making is based on some regulatory values for passenger traffic, but this is not sufficient for efficient terminal management. Modern passenger terminals are characterized by dynamic process variability and consideration of diverse options, taking into account the criteria of safety, reliability analysis, and the continuous research of passenger processing. For any modern marine passenger terminal, it is necessary to use the tool to simulate passenger flows in dynamics. Only in this way it is possible to obtain the analytical information and use it for decision making when solving the problem of the amount of personnel required for passenger service, transport safety, some forecasting tasks and so on. Of particular relevance is the choice of the mathematical transport model and the practical conditions for the implementation of the model in the real terminal operation. In this article, the analysis technique of intelligent simulation-based terminal services provides a new mathematical model of passenger movement inside the terminal and presents a new software instrument. Moreover, the conditions of implementation of some transportation models during the operation of marine passenger terminal are examined. The study represents an example of analytical information used for the forecast of the terminal operations, the analysis of the workload and the efficiency of the organization of the marine terminal

Some Experiences of Specialists in Maritime Transport Education at SUAI (Russia) and the University of Dubrovnik (Croatia)

Transport sector is traditionally globally oriented, so education is necessarily connected with standardization. The importance of experience exchange between education centers and schools is obvious. More and more skills that are necessary for specialist in transport sector are connected with logistics and ICT. The most effective approach is that one in which the education is governed by simulators and especially educated instructors with great experience from real sector. In this paper, we have presented some experiences from Saint-Petersburg State University of Aerospace Instrumentation (SUAI) in Russia and Maritime Department from The University of Dubrovnik in Croatia

Improving the economic efficiency of vapor recovery units at hydrocarbon loading terminals

The article discusses effective ways to reduce the cost of operating vapor recovery units and increase the financial result of their operation. The first method is based on regulation of the power-on time of the installation. The second method is based on using the potential energy of the fluid flow of the gravity section to supply the system equipment with energy. The potential savings on VRU maintenance will reduce the risks of payback of installations. The proposed methods will have a significant impact on society, as the possibility of a wider distribution of installations that protect the environment from emissions of volatile organic compounds into the atmosphere will become available

STUDY ON OPEN CONTACT SYSTEMS WITH FLAT PARALLEL ELECTRODES FOR AERIAL ROBOTS CHARGING PLATFORMS

The authors of this paper proposed the design of a charging platform for aerial robots (ARs), the advantages of which are the simplicity of implementation, non-requirement of precision landing ARs on the platform and the possibility of servicing several robots simultaneously. The platform comprises a row of flat parallel open electrodes lying in the same plane and separated by thin dielectric spacers. One half of platform electrodes are connected with positive pole of the charging power source and another half – with negative one, and their polarities are interlaced. The AR has several on-board electrodes in its support stanchions, and their contact points are located at the vertices of a regular polygon. Geometric analysis of the on-board electrodes’ positions on the platform has been carried out. Practical recommendations have been given for configuring electrodes that can lead to 100% probability of correct contacting. Simulations with the help of the special software were carried out and the probability of correct contacting after landing for different number of contact points under uncertainty of their coordinates was estimated

АНАЛИЗ ФУНКЦИОНИРОВАНИЯ ГИБКОЙ ПРОИЗВОДСТВЕННОЙ СИСТЕМЫ С ИЗБЫТОЧНОСТЬЮ. Analiz funkcionirovaniâ gubkoj proizvodstvennoj sistemy s izbytočnost'ů

The flexible manufacturing system is being examined as а discrete оnе under the influence of disturbances which change the technology operation time. The time redundancy is using as а complex method fог FMS reliability increasing. The connection between the discrete system failure and the amount of the time - and system - redundancy is showing for the example of Markoff chain failure disturbation