Publikacje naukowe Renata Boć
Tytuł: Reilability measures in GNSS multi-constellation systems sensors
Autor/Autorzy: Maciej Gucma, Renata Boć, Mateusz Wąż
Miejsce publikacji: European Research Studies Journal
Rok: 2021
Słowa kluczowe: GNSS, positioning of transport devices, reliability of system
Abstract: The purpose of this article is to analyse methods and factors that describe reliability in modern GNSS systems.Design/Methodology/Approach: This analysis was conducted for several branches of human activity that rely on technical systems for assuring safe and reliable operations. Transportation, logistics, geodetical measurements, or development are just few professional activities dependent on satellite positioning. The reliability of the whole transport or technological chain is often combined with the singular reliability of satellite monitoring systems. Global Navigation Satellite Systems (GNSS) are present where human activity must be backed with precise positioning and timing information. Findings: This paper will provide a review of researches in the field of GNSS on the side of the multi-constellation receiver concerning reliability issues. Practical Implications: A combination of technical criteria to mention safety, maintainability, quality, cost, risk, or availability will be addressed as a comparative analysis. Originality/Value: The results of the study reflect the applicability and effectiveness of used indicators that can contribute to many human activites. Consequently, the fundamental strength of proposed factors can contribute to many business branches where accuracy and standard measures of reliability used in single constellation (like GPS) receivers differ then multi-constellation ones where more complex reliability measures must be provided.
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DOI: 10.35808/ersj/2362
Tytuł: Factors Influencing the Action Point of the Collision Avoidance Manoeuvre
Autor/Autorzy: Marcin Przywarty, Renata Boć, Brcko Tanja, Marco Percovic
Miejsce publikacji: Applied Sciences-Basel
Rok: 2021
Słowa kluczowe: ARPA, Automatic Identification System (AIS), closest point of approach, collision avoidance, safety of navigation
Abstrakt: Perhaps the most problematic issue regarding navigation safety management is the unknown, or unknowable, is the navigator’s decision made in the face of a dangerous situation. This applies particularly to collision-avoidance. The aim of the article is to identify factors that influence the moment of decision during a collision-avoidance manoeuvre and to define theoretical distributions that can be used during modelling of a navigator’s behaviour. The applicable research was divided into two stages. In the first, the distance between ships and the time to closest point of approach (TCPA) were analysed. In the second, the influence of the size of the target ships and relative speed were investigated. The advantage of the paper is its use of actual observations collected in real situations. The proposed approach allows for a better understanding of the navigator’s actual decision-making, which will be instructive in measures taken to improve navigational safety.
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DOI: 10.3390/app11167299
Tytuł: Vessel multi-parametric collision avoidance decision model: fuzzy approach
Autor/Autorzy: Tanja Brcko, Andrej Androjna, Jure Srše, Renata Boć
Miejsce publikacji: Journal of Marine Science and Engineering
Rok: 2021
Słowa kluczowe: fuzzy logic, decision model, collision avoidance
Abstract: The application of fuzzy logic is an effective approach to a variety of circumstances, including solutions to maritime anti-collision problems.The article presents an upgrade of the radar navigation system, in
particular, its collision avoidance planning tool, using a decision model that combines dynamic parameters into one decision—the collision avoidance course. In this paper, a multi-parametric decision model based on fuzzy logic is proposed. The model calculates course alteration in a collision avoidance situation. First, the model collects input data of
the target vessel and assesses the collision risk. Using time delay, four parameters are calculated for further processing as input variables for a fuzzy inference system. Then, the fuzzy logic method is used to calculate the course alteration, which considers the vessel’s safety domain and International Regulations for Preventing Collisions at Sea
(COLREGs). The special feature of the decision model is its tuning with the results of the database of correct solutions obtained with the manual radar plotting method. The validation was carried out with six selected cases simulating encounters with the target vessel in the open sea from different angles and at any visibility. The results of the case
studies have shown that the decision model computes well in situations where the own vessel is in a give-way position. In addition, the model provides good results in situations when the target vessel violates COLREG rules. The collision avoidance planning tool can be automated and serve as a basis for further implementation of a model that considers
the manoeuvrability of the vessels, weather conditions, and multi-vessel encounter situations.
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DOI: 10.3390/jmse9010049
Tytuł: Applying simulation studies to define further development of the approach channel to Ystad
Autor/Autorzy: Lucjan Gucma, Rafał Gralak, Jarosław Artyszuk, Renata Boć
Miejsce publikacji: Scientific Journals of the Maritime University of Szczecin
Rok: 2018
Słowa kluczowe: model of manoeuvring a ship, navigation safety, designing seaports, applying simulation, approach channel, PIANC method
Abstract: The increasing sizes of ships determine the interest in modifying the already existing solutions. Simulation models allow us to analyse the possible modernisation options. The article presents analysis results for the width of the fairway to Ystad, marked with buoys with respect to navigation safety. After a thorough analysis, taking into account the safety of navigation, further possibilities of development have been determined. Study results are aimed at designing
new solutions in case of modernization of the approach channel to Ystad.
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DOI: 10.17402/291
Tytuł: The modernization of the Mrzezyno Seaport. Applaying simulation studies to define the variants of the expansion of the entrance breakwater
Autor/Autorzy: Renata Boć, Lucjan Gucma, Andrzej Bąk
Miejsce publikacji: Annual of Navigation
Rok: 2017
Słowa kluczowe: model of manoeuvring a ship, navigation safety, designing seaports, breakwater optimization
Abstract: Objective reasons, such as climatic changes, larger vessels, sometimes the impracticality of the current solutions, determine the interest of decision-makers in rebuilding the existingports and breakwaters. Tested simulation models allow for a thorough analysis of the possiblemodernization variants taking into account the variability of basic parameters. The article pre-sents research results related to the optimization of the Mrzezyno seaport with respect to navi-gation safety and the possibility of larger vessels calling at the port after its modernization.In the paper, real time
simulation methods based on manoeuvre simulators were applied. Two different variants that can be implemented from the technical point of view were studied. Following a multidimensional analysis that took into consideration increased comfort of ship manoeuvres in the port and navigation safety, one variant was indicated as the optimum. The aim of the research results is to help design new solutions in the caseof the modernization of the Mrzezyno seaport.
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DOI: 10.1515/aon-2017-0020
Tytuł: Applying simulation studies to define futher development of the Przemysłowy Canal in Szczecin
Autor/Autorzy: Lucjan Gucma, Renata Boć, Andrzej Bąk
Miejsce publikacji: TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation
Rok: 2017
Słowa kluczowe: Port Manoeuvering, Port of Szczecin, Przemyslowy Canal in Szczecin, Applying Simulation Study, Navigation Safety, Safety of Navigation, Parameters of Waterways, Harbour Approach Channels Design
Abstract: The increasing sizes of ships and lack of functionality of the existing solutions determine the interest in
rebuilding the already existing solutions. Simulation models allow to analyse the possible modernisation variants taking into account the variability of elementary parameters. The article presents analysis results for the Przemyslowy Canal in Szczecin with respect to navigation safety and regulating traffic regulations in the Przemyslowy Canal taking into consideration the interests of all subjects involved. The paper applies real-time simulation methods based on manoeuvring simulators. After a thorough analysis that took into account the safety of navigation, further possibilities of development have been determined. Study results are aimed at designing new solutions in case of modernization of the Przemyslowy Canal in Szczecin.
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Tytuł: Vessel route optimization to avoid risk of collision between carriers of dangerous goods and passenger vessels
Autor/Autorzy: Renata Boć, Krzysztof Marcjan, Marcin Przywarty, Lucjan Gucma
Miejsce publikacji: Scientific Journals of the Maritime University of Szczecin
Rok: 2016
Słowa kluczowe: carriage of dangerous goods risk of collision passenger ships chemical tankers optimization of ship routes algorithm
Abstract: This article presents the underlying concepts of a mathematical model optimizing the routes of vessels carrying dangerous goods proceeding in the vicinity of passenger ferries. The method is based on the estimated risk of collision between a chemical tanker and a passenger vessel. Risk assessment was performed using three models. The
first model determines the distance of the passing ships on the selected area on the basis of the AIS data. The second one is a stochastic model of navigational safety assessment, which provides statistical data on the probability of collision between the two chosen types of vessels. The third model determines the consequences of collisions between passenger ships and chemical tankers. The study defines the scope of the parameters affecting the objective function of
vessel route optimization and their importance in the optimization problem.
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DOI: 10.17402/177
Tytuł: Analysis of the traffic of chemical tankers in the Szczecin and Świnoujście seaports
Autor/Autorzy: Renata Boć, Lucjan Gucma
Miejsce publikacji: Scientific Journals of the Maritime University of Szczecin
Rok: 2016
Słowa kluczowe: hazardous and noxious substances, chemicals, PHICS, VTS, AIS, pollution
Abstract: The ecological protection of the Baltic Sea against extremely noxious pollution by chemical substances is one of the major issues faced by the states that are located on its shore. In this article, the transport of chemicals in bulk has been analysed. An attempt has been made at grouping dangerous chemical substances based on their negative impact on the environment. Databases that were available have been studied with respect to various chemicals transported in the seaports of Szczecin and Świnoujście. Based on the data available, an attempt at analysing the traffic of tankers carrying noxious chemical substances has been taken up.
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DOI: 10.17402/128