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Scientific Journals of the Maritime University of Szczecin,
Zeszyty Naukowe Akademii Morskiej w Szczecinie



 

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ISSN 1733-8670 (Printed)
ISSN 2392-0378 (Online)
DOI PREFIX 10.17402

The Scientific Journals (SJ) issued by the Maritime University of Szczecin (MUS) is a magazine which presents results of MUS research and educational activities. SJ has been published since 1973 but in 2004 it changed the ISSN from 0209-2069 to 1733-8670 as a result of MUS changing its name from Wyższa Szkoła Morska w Szczecinie to Akademia Morska w Szczecinie.

At the beginning there were several papers published in SJ and they were connected with maritime affairs. Doctoral and habilitation theses had also been published then. With time the SJ scope expanded to among others nautical issues, operation of the vessel, marine power plant operation. The magazine presented also symposium and conference proceedings.

Since 2008, the magazine has been published in A4 format with a new layout. Since 2010 the journal has been publishing the articles in English. By the end of 2014 a total of 112 Scientific Journals will have been published.

The SJ Scientific Board ensures high quality of published papers. All papers are reviewed confidentially and anonymously (double blind review) and are a subject of scientific edition.

The Scientific Journals printed version is primary.

http://scientific-journals.eu/

List of Issues

Recent Submissions

  • Pacana, Andrzej; Czerwińska, Karolina; Woźny, Artur (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The foundry industry is an important component of the economy on which other progressive industries depend. The reliability of the products it manufactures is determined by the technologies used, but, most importantly, it ensures the expected level of quality. The purpose of the article is to develop a synergistic quality-cost model for the improvement of casting products. The model is based on an integral methodological configuration that makes it possible to determine the level of relevance of the causes of casting nonconformity in the quality-cost context. The model integrates techniques such as the Pareto-Lorenz diagram, ranking, brainwriting, Ishikawa diagram, Likert rating scale, and matrix diagram. Verification of the method by its implication in the manufacturing process of a gearbox casting is performed. The model makes it possible to identify quality-cost relationships between key categories of problem causes and major product nonconformities. The main causes of the loss of quality stability of the analyzed product are found to be low quality of molding sand, poor technical condition of foundry equipment (too infrequent repairs and overhauls), and ineffective quality control. Carrying out the analysis made it possible to develop appropriate improvement measures. It is proposed to implement changes in the casting process, implement the TPM method, conduct periodic training, develop job instructions, implement a control system, and provide supervision of employees. Further research directions will concern the implications of the method within the other positions in the casting company and its development towards automation of analysis.
  • Nozdrzykowski, Krzysztof; Stępień, Mateusz; Grządziel, Zenon (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Abstract This paper presents the results of modelling research concerned with the technological process of the cold bending of a pipe. Stress and plastic strain studies are carried out using the finite element method (FEM) on a thick-walled pipe and various shapes of bending form. The results of the research are benchmarked in terms of the correctness of the implementation of the bending process, including the change in the pipe outside diameter and wall thickness. The level of ovalisation of the cross-section in the bending pipe is used as the primary criterion for assessing the correctness of the bending process. The results show that the most favourable properties in terms of minimising the ovalisation of the pipe cross-section are provided by the use of a bending form with a trapezoidal shape.
  • Barczak, Agnieszka; Kauf, Sabina (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The COVID-19 pandemic has caused vast changes in the functioning of societies and economies, including restrictions on the use of rail transportation. As a result, the number of passengers has declined, and despite the lifting of restrictions, it is still difficult to estimate when and if passenger rail traffic will return to its pre-pandemic state. Therefore, it seems important to consider the following: how the pandemic has affected the transportation behavior patterns of residents and, above all, what should be done to encourage passengers to use rail transportation more often, which is more environmentally friendly and reduces greenhouse gas emissions. Thus, it seems important to consider what the “new normal” in rail transportation should look like. This article analyzes the number of passengers traveling by rail in eight European countries. This work considers quarterly data for 2013‒2019, combined passenger forecasts for 2020‒2021, and annual forecasts of rail passenger traffic until 2025 built using data for 2012‒2021.
  • Bonato, Jasminka (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Natural rubber is an important industrial material derived from caoutchouc trees (Hevea Brasiliensis). By chemical composition, it is a polymer material that is mostly cis-1,4-polyisoprene. It falls into the category of elastomers, which enables its wide usage due to its specific characteristics. Polymer materials include plastic, rubber, and glue and are the most important technical materials. Rubbers are used in the production of conveyor belts, shock absorbers, coatings, fenders, engines, and device parts. They are also used in composite materials such as threads, particles, and matrix materials. By analyzing the properties of natural rubber, the subject of the research is defined, i.e., the characterization of natural rubber samples and their connection with macroscopic properties. In accordance with the subject of the research, in this paper, tests are carried out on samples of natural rubber, which are obtained in the form of thin films from latex and cross-linked by gamma radiation. A total dose of 300 kGy is applied to the samples in the state of uniaxial deformation. In this sense, a hypothesis is put forward that involves examining the influence of radiation dose on the morphology of natural rubber samples using scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometry (EDX). The investigation aims to emphasize the importance of the method in acquiring a comprehensive characterization of the material samples, which are used both in maritime areas and in other fields of application.
  • Chełstowska, Aleksandra; Osypchuk, Oleksandra; Sosik, Katarzyna (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    With the dynamic socio-economic development of cities, actions of key importance have become necessary to ensure the required accessibility of urban transport. This goal can be achieved by expanding and modernizing the transport infrastructure and expanding the public transport network. It is transport that ensures the flow of goods and the movement of people in cities and beyond their borders. This state of affairs results in an increased importance of appropriate infrastructure, where construction investments have a fundamental role, and the method of their implementation affects a number of areas that significantly determine transport accessibility. This article aims to assess the impact of construction projects involving civil engineering facilities on transport accessibility based on the example of the city of Szczecin. The research process is based on unstructured observation and expert interviews, which allow for the development of a structured survey questionnaire. The authors manage to identify the elements of transport accessibility that are most negatively affected by construction projects. The collected data may constitute a basis for developing recommendations for local authorities and construction companies to reduce the diagnosed negative impact in the studied area.
  • Wirski, Robert Tomasz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Based on cloud providers’ reports on service outages, it has become clear that how a web service is deployed is of great importance. Clearly, using one service supplier is insufficient because it introduces single points of failure. In this paper, a novel high-availability multi-cloud model intended for a web service is proposed, which is free from such shortcomings yet preserves convenient assets of computing clouds. The methodology used to improve web service availability should involve several cloud suppliers and devise management techniques that control access to them. This is achieved by means of the server availability tracking algorithm, which controls client apps’ access to the service. Moreover, typical benefits and problems involved in choosing IT infrastructure for a web service are elaborated. State-of-the-art cloud computing models, such as IaaS, PaaS, SaaS, BPaaS, and INaaS, are outlined. Operating systems statistics used for web services are included. Open-source monitoring software solutions are gathered, which help administrators to monitor and govern web servers.
  • Prokopiuk, Iryna (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The topic of autonomous vehicles has become popular in recent years, not only because of technological developments but also because of existing challenges in the transportation industry. Autonomization of means of transport has an element of competitive advantage among manufacturers of such vehicles. For their customers ‒ i.e., transport companies ‒ this, in turn, means greater safety, greater driving comfort, and the ability to stay in the market and not fold when such a company runs out of drivers. Over the past few years, we have dealt with such a situation ‒ on the one hand, we have seen a growing trend in the amount of cargo to be transported and, on the other hand, there is a decline in employment in the transport sector (especially cargo). The supply of labor in the industry does not cover the demand for this workforce. The goal of this research is to determine the current state of the cargo transportation sector and to formulate possible advantages and disadvantages of the partial introduction of autonomous vehicles performing cargo transportation as a response to existing threats in the industry
  • Kiliç, Alper; Akdamar, Emrah; Baştuğ, Sedat; Goğebakan, Maruf; Uzun, Öykü Savan (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This study explores determinants of organizational support perceptions among employees within container shipping agencies. It examines the influence of leadership styles employed by shipping agency managers on perceived organizational support. Employing correlation and multiple regression analyses, the non-normally distributed data prompts the utilization of the Kruskal-Wallis H test. A survey was administered to 258 employees in 255 shipping agencies from major Turkish shipowner companies dominating the maritime transport sector. A positive correlation is established between perceived organizational support and leadership style dimensions. Additionally, it suggests that efforts to create a supportive environment, especially for junior employees, can mitigate high turnover rates and enhance organizational performance. Practical implications include the recommendation for shipping agencies to focus on leadership development, communication improvement, and skill-building initiatives to foster a supportive workplace environment.
  • Pędziwiatr, Kamil; Pawłowska, Patrycja; Osypchuk, Oleksandra (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The aim of this article is to identify the best practices to reduce potential risks in passenger transport using the example of urban public transport in Berlin. Due to dynamically progressing urbanization processes and the related development of the German capital, the demand for transport services increases. A significant problem has become the coordinated management of public transport for passengers and ensuring safety in the means of transport and available infrastructure. Local government and public transport managers in Berlin have decided to introduce solutions to reduce potential threats to public transport participants, thereby contributing to improving the quality and safety of the transport services provided. The methods of source analysis, descriptive analysis, and deduction are used to conduct the analysis in this study. The results show that the constant search for new solutions to transport problems is a challenge for city managers in the era of rapidly progressing urbanization processes.

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