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Browsing by Title: 39 Scientific Journals of the Maritime University of Szczecin

  • Kendra, Martin; Mašek, Jaroslav; Babin, Matej (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    One of the most important characteristics of the railway transport is a safety. Different types of transported goods properties need individual approach to prepare safety goods transportation. It is important to load and fix goods in railway wagons in well done way to reduce the number of accidents on the railway. The bad way of loading and fixing of the goods in the railway wagons can bring a very dangerous results as a damage of the transported goods or accident of the train. This paper deals with the analysis of the railway infrastructure parameters, which affect the well done way of loading and fixing of goods in railway wagons for highcapacity transport.
  • Żukowicz, Marek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    An important aspects of learning are the theoretical elements of mathematics and the methods of obtaining the function or designbecause it allows for further development of the issues and the ability to apply this problem in practice. The Fourier transform is very useful in science and technology. The article shows how and in what structures is possible to use the Fourier transform in the set Rn. The article describes the project of compact-open topology, which is essential to the construction of the Haar measure and integral. It was also described the concept of the nature of a locally compact topological group, because a group of characters is also essential to the construction of the Fourier transform and inverse Fourier transform. It has been proven that a group of characters is a locally compact topological group, which allows the introduction of the Haar measure. It has given an example application of the theory of Haar integral when calculating the Fourier transform for some of the electronics.
  • Wolniak, Radosław (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    There is in a paper presentation of an analysis of the quality of production carried out on the example of the production of raw coal in selected mines. The aim of the publication was to analyze the indicators to determine the extent to which the objectives have been met, and thus whether the process is of sufficient efficiency.
  • Więckowski, Dariusz; Jaśkiewicz, Marek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    The issue of passive safety of pregnant women travelling by car has been discussed. The pregnant woman’s body has been considered as a complex dynamic system subject to various impacts that take place during a car ride. In the field of motorization, much attention is paid (and rightly so) to the issue of safety of pregnant women travelling by car in consideration of road accidents. Motor vehicle accidents are the most important cause of death of pregnant women, according to data published by the National Highway Traffic Safety Administration (NHTSA). In the USA, about 130 000 pregnant women being in the second half of their pregnancy are annually involved in motor vehicle accidents. In this paper, some example solutions have been presented that are to improve the passive safety of riding in a motor car, including those proposed to minimize the injuries that may be sustained in result of an accident. The issue of the possible negative effects of a road accident or collision on a pregnant woman has also been raised. The application of virtual techniques has been discussed and examples of modelling a pregnant woman have been shown. Some research results concerning the deceleration values that might be dangerous for pregnant women have been given, with reference having been made to statistical data on fatal accidents.
  • Waszczuk, Paweł (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    Article describes extended concept of digital servodrive velocity control algorithms rapid prototyping, which is crucial component of milling machine feed drive equipped with ball screw. Approach presented here describes the case where the user has no access to the internal control structure the servodrive (design widespread in commercially applied CNC solutions), and can only use an additional signal (additive value of torque/current), calculated on the basis of a comparison of the real object and its nominal dynamic model.
  • Walczak, Aleksander (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This study discusses the principles and methods of assessment based on Port State Control inspections of various flag ships. These inspections are aimed at checking to what extent international convention requirements concerning navigational safety and marine environment protection are fulfilled. This study makes use of annual statistical reports of the Paris Memorandum of Understanding, and incorporates the author’s presentation of calculating methods, on which the assessments of the national merchant vessel fleets are based.
  • Szczęśniak, Bartosz (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    EPC models provide a subject widely discussed in the literature. The principles applicable, while creating them have been elaborated upon in numerous publications. An analysis of the existing principles indicates certain inconsistencies as far as the creation of hierarchical models is concerned. The problem of combining equivalent EPC models using process interfaces has been discussed in the author’s previous publication. This paper continues to elaborate upon the problems previously raised, pertaining to EPC model linking by means of hierarchical functions. It addresses principles significant from the perspective of creating and linking such models using the aforementioned approach. Specific questionable situations have been described and individual solutions proposed to enable avoiding them.
  • Sanecki, Józef; Bauer, Robert W.; Klewski, Andrzej; Stępień, Grzegorz; Beczkowski, Krzysztof; Bauer, Robert W. (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    The topic of the publication is the presentation of the method of rapid mapping performation. Rapid mapping are performed in special situations, if a terrain is subjected to significant changes or a quick human reaction is needed. Such performation can be available both in paper and digital versions, published on on-line websites – depending on the needs. For rapid mapping almost every type of image data can be used. In rapid mapping different editorial rules are applicable, it is acceptable to make imaging legible with materials of much less detail. A scale of the design is determined based on the interpretation possibilities, and not on the base of predetermined resolution of the design.
  • Salmonowicz, Wiesław; Lisaj, Andrzej; Uriasz, Janusz (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This paper presents methods of renewal the GOC certificates in Poland and other countries. Relevant provisions of the SOLAS Convention, the Radio Regulation and the STCW Conventions are discussed. Knowledge of candidates for renewal of the GOC certificates were analysed based on responses to questionnaires. The differences in the methods of training and examinations between selected European countries are presented. Noted the possibilities of GMDSS training at a distance recommended by the STCW Convention. The results and conclusions are presented in the summary arising the difference methods of renewal the GMDSS certificates.
  • Rybczak, Monika (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This paper is devoted to the concept of stability in linear matrix inequalities. Especially to the analysis of a bounded stability region for a multivariable 3DOF system. The study is focused on two different, user defined, bounded LMI regions where poles are calculated with the use on an algorithm and placed in the left half plane of complex variable plane s. It is shown that in the studied case the shape of the region is irrelevant compared to the location of region bounds. And more specifically only the active bounds where the poles are located on it’s limits are significant to controller operation.
  • Ranachowski, Zbigniew; Pawełek, Andrzej; Drzymała, Piotr; Bonarski, Jan; Lewandowski, Marcin; Ozgowicz, Wojciech (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This paper discusses the mechanical properties, microstructure and crystallographic texture of light alloys made on the base of aluminium, magnesium and lithium. An acoustic emission (AE) technique was applied to detect the moment of twinning or slip activation during compression and channel – die tests to extend the comprehension on the nature of the plastic deformation processes occurring in the investigated alloys.
  • Pietrzykowski, Zbigniew; Magaj, Janusz (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    This paper presents the problem of determining a safe ship trajectory in a restricted area. The route choice task is defined as a dynamic optimization problem. The route choice algorithm and criteria are presented and discussed. The ship fuzzy domains are used as a safety criterion. The criterion of the number of manoeuvres to be performed by the own ship is added to the algorithm. The ship encounters simulated situations. Calculated safe ship trajectories were presented and discussed. Discusses the implementation of the present process, in real terms.
  • Molenda, Michał (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    Article is devoted to the factors conditioning the improvement of the quality management system (QMS) of industrial company. In this paper, these factors are called determinants of improvement in the QMS. Particular attention was paid to factors which sources should be sought in knowledge management in the organization. These determinants have been identified in the research process which was conducted among the management of one of the large industrial companies. In the research process, degree to which the determinants support forms of professional organization was assessed. These forms are described in the first part of the following process which these are the innovations and Kaizen. The corrective and preventive actions are mentioned as the third form of improvement mechanisms which are in the form of obligatory procedures for quality management systems based on ISO 9001 quality management standard. The last part of the Article is dedicated to chosen aspects of the role of Knowledge Management in the improvement of the quality management system.
  • Miller, Anna (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    Model Predictive Control is a control strategy which can be used for ships guidance and trajectory tracking problems. Linear multidimensional MPC controller is used to control the transversal, longitudinal and rotational velocities of a ship. Control system based on the MPC algorithms is robust to wind disturbances and thus can be used in real sailing conditions. It is proved by the computer simulations results and described in detail in this publication. Whole control system was designed and simulation studies were carried out on the basis of the real floating training ship model. A Model Predictive Controller synthesis steps, including linearization of the nonlinear ship model in the vicinity of operating point, are shown.
  • Łozowicka, Dorota; Kaup, Magdalena (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2014)
    The short specificity of high -speed passenger craft (HSC) and analysis of factors affecting the safety of such units is presented at the article. Normative documents relating to the HSC evacuation is also described. The purpose of this article is to analyze and evaluate the possibility of evacuation of passengers in emergency situations on HSC. This analysis was done on the example of a catamaran in accordance with regulation MSC/Circ.1166 given by IMO.

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