Editorial preface to issue 67(139)/2021

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ISSN 1733-8670 (Printed)

ISSN 2392-0378 (Online)

DOI PREFIX 10.17402

Dear Readers, 

We are pleased to announce the third 2021 issue (No. 67) of the Scientific Journals of the Maritime University of Szczecin. This issue features novel findings and perspectives in the following areas: Civil Engineering and Transport, Environmental Engineering, Mining and Energy, Material and Mechanical Engineering, Economics, Management and Quality Science, and Information and Communication Technology.  

The Civil Engineering and Transport section features two articles. The main research objective in the first study was to identify and propose new risk assessment tools. Drones and their potential users in the maritime sector by various entities, including ship classification societies, shipyards, and search and rescue (SAR) missions, was the subject of the second study. 

The Environmental Engineering, Mining, and Energy section contains an article discussing waste treatment methods to identify the best method to reprocess (recycle) polyurethane (PUR). 

The Material and Mechanical Engineering section contains two articles. In the first study, the influence of the stern wedge length and height on hull drag and trim to glide in calm water was examined. The purpose of the second study was to detect and analyze the porosity in composites using microscopic and submicroscopic methods. 

Three articles are featured in the Economics, Management, and Quality Science section. The author of the first study shows that the increasing unpredictability of socioeconomic or biological changes (e.g., the SARS-CoV-2/COVID 19 pandemic), the multidirectional nature of their impact, the variability of their intensity, and the uncertainty in estimating their potential impacts, made it difficult for supply chains to stably operate. This observation sparked an attempt to produce a sample set of expectations for contemporary supply chains that are particularly appropriate for emerging market challenges in the form of threat and condition megatrends, including those illuminated during the SARS-CoV-2/COVID-19 pandemic. The research subject of the second study was the relationship between the characteristics of consumer product demand and the profitability of the purchasing strategy, considering both the supply source and the transportation technology. Team coaching was the research problem in the third study. The goal was to present a team development process using the High Performance Team Coaching Model. 

The Information and Communication Technology section features a study on the use of artificial neural networks (ANNs) to solve image classification problems.  

With kind regards, Izabela Dembińska (Editor-in-chief)