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  • Gucma, Lucjan; Duczkowski, Marek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Using laser rangefinders or other distance measuring tools offers an opportunity to create new ship waterplane position finding algorithms in restricted areas. The achieved by such system redundancy of positioning system will affect on ship’s safety and influence navigation which is dominated by one system (GPS and its derivatives). This paper is focused on developed optimization gradient algorithm and its improvement, algorithm with random start position
  • Lushnikov, Evgeny M. (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    In the paper the priority of technical means and methods of navigation at contemporary seagoing ship was discussed. The role of magnetically compass and gyrocompass at the condition of contemporary ship was described. Effectiveness of gyrocompass and magnetically compass from point of navigation and economy was analyzed. The result of analysis is reflected at the recommendation for navigators and managers of ship’s company
  • Matuszak, Zbigniew (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The described in literature components validity measures (the order of the smallest cross section measurement of streams, number of occurrences of events in the Fault Tree, Birnbaum, Veseley-Fussell’s measures, the potential of reliability improvement, Lambert’s measure ...) relating mainly to the concepts of reliability and reliability structures is characterized. Concepts of studying functional structures of complex technical systems are presented. Directions and the amount of streams of energy factors flow in the systems will be analyzed. The analysis will be performed for the so-called dynamic functional structures. The validity and importance of the component in the system is assessed on the basis of the number of streams of energy factors which flow to and from the component. The greater the number of those streams, the more responsible for the operation of the system in this state is the component
  • Medyna, Piotr; Wiśniewski, Bernard; Kamionkowski, Paweł (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Tropical cyclones tracks on the North Atlantic basin were categorized (years 1989–2009). Standard environmental patterns were used. Authors took into consideration cyclones motion parameters and their changes. Recurving, left-turning, nonrecurving, looping and erratic tracks were describe
  • Gucma, Lucjan; Marcjan, Krzysztof (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    This paper presents a study of ships passing distances in coastal waters based on data from the AIS. Examinations are designed also to work towards the development of probabilistic domain that is an area in which the navigator is trying to keep free from other vessels. This article has been hypothesized for the distribution of ships passing distances from which you can build a probabilistic domain. The article summarizes the studies for three types of ships: tankers, passenger ships and cargo vessels and is comparing the shapes of domains for each of them in three situations: overtaking, crossing, vessels on the opposite courses. Studies were carried out in the Gulf of Pomerania
  • Gucma, Lucjan; Muczyński, Bartosz; Terczyński, Robert (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Preliminary outcome of the tests of laser distance measurement modules being a part of the PNDS system (Pilot Navigation \& Docking System) developed within the OPIE project (Operational Programme Innovative Economy) in Maritime University in Szczecin are presented in the article. The tests were carried out in laboratory conditions and the actual conditions which may occur during the system’s operation. The modules of the digital laser distance meters available on civilian market were compared. Statistical analysis comparing the accuracy of the laser distance meters was presented and based on it, their general effectiveness was evaluated making part of the preliminary prototype of the PNDS system
  • Schoeneich, Marta; Puszcz, Agnieszka; Gucma, Lucjan; Jankowski, Stefan; Artyszuk, Jarosław; Duczkowski, Marek; Gralak, Rafał (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    In this article an integrated system for dynamic under keel clearance (UKC) assessment is presented. The system was created to improved navigation safety and economic effectiveness in Polish ports. In this paper principle of model operations and utilization with modern, available mobile devices in integration with wireless data transmission technology was introduce
  • Naus, Krzysztof; Narloch, Arkadiusz (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Evaluation of accuracy of position coordinates’ determination in respect to floating marks, with free adjustment method applied, has been a target of the paper. General theory of geodesic adjustment – classical one based on least squares method and free adjustment – is presented in its first part. Main part contains description of the research. It was conducted based on geometric navigational structure which elements had been formed by beacons placed in the Bay of Gdańsk. It consisted in simulating results of measurements made in respect to marks of this structure (bearings and distances) and calculating the position coordinates based on them, as well as its accuracy. The calculations were made with the method of classical geodesic adjustment and free adjustment applied. Discussion about obtained results of the research and general conclusions are given in the ending part of the article
  • Gucma, Stanisław (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    This article presents basic principles of using simulation research in marine traffic engineering and describes a simulation method of waterway design. The author indicates the most common errors made when the procedures of simulation research are not followed, despite advanced ship handling simulators used, which makes it impossible to satisfy the criterion of conformity between the examined system and its model. Practical use of results thus obtained leads to the breach of safety criteria or overdimensioning of waterway system. The presented simulation method of waterway design has been developed by this author. Applying the procedures of the method ensures that the mentioned conformity criterion is fulfille
  • Neumann, Tomasz; Weintrit, Adam (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The paper presents the usage of mathematical theory of evidence in maritime and offshore applications. This paper brings together a collection of some research on the Dempster–Shafer theory of belief functions. By bridging fuzzy logic and probabilistic reasoning, the theory of belief functions has become a primary tool for knowledge representation and uncertainty reasoning in expert systems. This paper can serve as the authoritative reference in the field of evidential reasoning and an important archival reference in a wide range of areas including uncertainty reasoning in artificial intelligence and decision making in maritime and offshore applications, in management, engineering and transport, in marine shipping, coastal management, navigation, surveillance, monitoring and observation. In particular the paper describes uncertainty reasoning approaches to decision making in maritime and offshore applications, possible applications in safety-based assessment, Coastal Management Expert System, mathematical theory of evidence in marine navigation, the optimisation problem of monitoring stations distribution and finally the facility location and location science
  • Jankowski, Stefan (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The aim of the pilot and navigation systems is to provide an outline of the vessel according to the surrounding hydro-technical objects and other obstacles to navigation. The article presents the results of simulation studies, which aim was to examine the impact of ship’s waterline accuracy, presented in these systems, on safety and effectiveness of the manoeuvre
  • Paulauskas, Vytautas (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Ro-ro vessels use shipside and shore ramps as roll-on/roll-off loading facilities. Baltic Sea has not tidal effects and water level did not change very much. In same time water level fluctuations in ports areas make difficulties to establish proper access to shore for ro-ro vessels during loading and unloading operations. Flexibility of ro-ro vessel-to-shore links pan is one of the key elements for optimization of ro-ro operations in ports. Feasibility outline of pontoon ramp potential, calculation methods and practical usage is studded and presented further in the article
  • Januszewski, Jacek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Information about user’s position can be obtained from specialized electronic position-fixing systems, in particular, Satellite Navigation Systems (SNS) as GPS and GLONASS, and Satellite Based Augmentation Systems (SBAS) as EGNOS, WAAS, MSAS. All these systems are known also as GNSS (Global Satellite Navigation System). As the number of GPS and GLONASS satellites visible by the user is sometimes in restricted area not sufficient, and these SNS cannot provide information about integrity, there is one service for civil users only etc., new systems, global as well as regional, must be constructed. The last years gave a rise to many important changes in the operational status and practical exploitation of all these systems. New SNS as Galileo in Europe and Compass (Beidou) in China, new SBAS as GAGAN in India and SDCM in Russia, new regional SNS as IRNSS in India and QZSS in Japan are actually under construction. Additionally the new satellite blocks as GPS IIF and III, and GLONASS K1 and K2, the new signals as GPS L5 and L1C, and GLONASS LC3OC and L1OC, the new services and possible applications of the future system Galileo are presented in this paper
  • Pietrzykowski, Zbigniew; Wielgosz, Mirosław; Siemianowicz, Marek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The ship domain – the area around the ship that should be clear of other vessels or objects – depends on many factors. In this paper authors present results of simulation research on ship domain determination. The influence of ship size on domain shape and dimensions in the restricted area have been analyzed. The method of determining ship domain is characterized. The results have been presented. The domains of ships of different sizes have been compared and conclusions formulate
  • Jurecki, Rafał S; Jaśkiewicz, Marek (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The following paper presents an analysis of the number of accidents, injuries and deaths over the last years. Accident trends have been identified in Poland with reference to different seasons. It includes an analysis of statistical data on both the number of vehicles, type of accidents occurring on roads and their causes. The evaluation of the road accidents’ effects has been carried out

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