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    Wyświetlanie 1-11 z 11
    Tytuł:
    Image processing method for cargo container identification in a stack within the cargo temperature control and fire safety system on container ships
    Autorzy:
    Konon, Vladyslav
    Powiązania:
    https://bibliotekanauki.pl/articles/32920246.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    shipboard safety
    cargo transportation
    cargo temperature control
    image processing
    fire detection
    Opis:
    The current research is focused on the identification of cargo containers in a stack from their images in the infrared and visible spectra, in order to locate the container-origin of ignition within the cargo temperature control and fire safety system. The relevance of the topic is reinforced by the functional requirements for shipboard safety, which are embodied in Chapter II-2 of the Safety of Life at Sea (SOLAS) Convention, and demanded by the necessity of enhancing safety measures during cargo transportation by the world container fleet. The thermal imager’s field of view (FOV) and the coordinate dependencies between the object and its image have been studied and modelled, and an algorithm for fire detection has been defined within the scope of the current research in connection with the containers within the camera’s FOV. A corresponding verification has been carried out by means of simulation modelling using the Unity and C# programming language capabilities.
    Źródło:
    Polish Maritime Research; 2023, 2; 114-120
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of organic polymer on properties of mineral concentrates. Part I
    Autorzy:
    Popek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/260443.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    polymer
    mineral
    water
    cargo
    Opis:
    The property is evaluated when acceptance for loading of solid bulk cargoes is judged prior to shipment. The liquefaction can be prevented by means of limiting the moisture content of the cargo by introducing the safety margin, regardless of the condition of stresses. It is rational to limit the moisture content of cargoes, which may liquefy, because liquefaction is not liable to occur when the degree of saturation is low, even if the permeability of the material is low. To prevent sliding and shifting of ore concentrates in storage biodegradable thermoplastic materials were added to the ore. The polymer absorbs water from the particle pore in mineral concentrates and its moisture content goes down. In consequence, polymer prevents: drainage of water from the particle pore, sliding and shifting of ore concentrates in storage.
    Źródło:
    Polish Maritime Research; 2007, 4; 64-67
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rationalization of servicing reefer containers in sea port area with taking into account risk influence
    Autorzy:
    Filina-Dawidowicz, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/259782.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    sea port
    reefer container
    refrigerated cargo
    risk factors
    Opis:
    This paper is aimed at presentation of a set of methods for rationalization of servicing containerized refrigerated cargoes in sea ports. During servicing reefer containers in port container terminals, take place various combinations of risk factors which can lead to loss of quality merits of cargoes contained in them. In the paper the risk factors capable of influencing quality of cargoes during their servicing in sea port, are identified, and the elaborated model for assessing risk level with the use of assumptions of fuzzy logic theory, is presented. Also, a simulation of servicing reefer containers in port, was performed. Moreover a prototype of an expert system which makes it possible to take correct decisions on servicing reefer containers in sea port, depending on impact level of risk factors, was proposed.
    Źródło:
    Polish Maritime Research; 2014, 2; 76-85
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An analysis of influence of lack of the electricity supply to reefer containers serviced at sea ports on storing conditions of cargoes contained in them
    Autorzy:
    Filina, L.
    Filin, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/258578.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    sea port
    reefer container
    refrigerated cargo
    risk factors
    Opis:
    Servicing the reefer containers at sea ports requires more reliability and precision than servicing the conventional ones because of specificity of perishable cargoes shipped in them. This paper is aimed at making analysis of way of servicing the reefer containers stored at sea port and at investigating its influence on storing conditions of refrigerated cargoes contained in them. Lack of the electricity supply to refrigerating unit of reefer container is one of the most common extraordinary situations in port area, which may lead to loss of quality of cargo contained in the container. On the basis of scenarios of possible progress of such situations, elaborated by means of calculations, rate of change of temperature of cargo in reefer containers cut-off from electricity supply source was determined and relevant recommendations as to organization of sevicing such containers at sea port, were elaborated.
    Źródło:
    Polish Maritime Research; 2008, 4; 96-102
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametrical method for determining optimal ship carrying capacity and performance of handling equipment
    Autorzy:
    Michalski, J. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/258961.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship design
    deadweight and cargo handling optimization
    required freight rate
    Opis:
    The paper presents a method of evaluating the optimal value of the cargo ships deadweight and the coupled optimal value of cargo handling capacity. The method may be useful at the stage of establishing the main owners requirements concerning the ship design parameters as well as for choosing a proper second hand ship for a given transportation task. The deadweight and the capacity are determined on the basis of a selected economic measure of the transport effectiveness of ship – the Required Freight Rate. The mathematical model of the problem is of a deterministic character and the simplifying assumptions are justified for ships operating in the liner trade. The assumptions are so selected that solution of the problem is obtained in analytical closed form. The presented method can be useful for application in the preliminary ship design or in the simulation of pre-investment transportation task studies.
    Źródło:
    Polish Maritime Research; 2016, 2; 19-24
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy analysis of stowing computations for securing non-standard cargoes on ships according to IMO CSS Code
    Autorzy:
    Kabaciński, J.
    Wiśnicki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/258714.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    safety of transportation
    stowing
    cargo securing
    non-standard cargoes
    lashing
    Opis:
    The article takes up a subject of effectiveness of securing arrangements while stowing non-standard cargoes on ships. Accuracy analysis of stowing calculations was based on procedures proposed by Code of Safe Practice for Cargo Stowage and Securing – CSS Code. Detailed calculations of forces and moments related to lashings, which prevents non-standard cargo against transverse tipping, were performed. Some simplifications were proven that may result in underestimating or overstating the calculated righting moment, which decides of safety margin of securing non-standard cargoes. The alternative more reliable procedure, without simplifications, was proposed.
    Źródło:
    Polish Maritime Research; 2009, 2; 67-71
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluations of port performances from a seaborne cargo supply chain perspective
    Autorzy:
    Low, J. M. W.
    Lam, S. W.
    Tang, L. C.
    Lan, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/258514.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    seaborne cargo supply chain
    port efficiencies
    freight transportation
    port service benchmarking
    Opis:
    Previous research on port efficiency focuses primarily on the provider’s perspective and assumes that maximizing the output is always desirable. This paper recognizes that maximizing the final output does not necessarily guarantee an efficient system and the notion of port efficiency and service effectiveness needs to be considered from the perspectives of both the provider and the consumer of the port service. The paper proposes a network-DEA model to evaluate the performances of 30 seaports worldwide. The concurrent consideration of efficiency scores from the network-DEA model and the traditional DEA-CCR model will offer valuable insights to port operators on how to improve port performances as part of a seaborne cargo supply chain.
    Źródło:
    Polish Maritime Research; 2013, S 1; 20-31
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Current state and prognoses of the structure of cargo transport on Polish and European inland water transport area
    Autorzy:
    Czermanska, R.
    Kowalczyk, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/963458.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    inland water transport
    Europe
    state
    flow of cargo
    potential for development
    Opis:
    The present report was prepared within the framework of research activities carried out in the Maritime Institute in Gdansk, when taking part in the international research project EUREKA E! 3065 INCOWATRANS, the goal of which was working out preliminary designs of new-generation ships for inland and coastal navigation, and preparing technical and economic structure for the revitalisation of inland waterways in Poland, with their further incorporation to the European transportation system. The article aims at analysing the present state and assessing the future potential of cargo routes observed in inland East-West water transport, i.e. between Poland and Western Europe countries.
    Źródło:
    Polish Maritime Research; 2007, S 1; 21-29
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-criteria optimisation of liquid cargo transport according to linguistic approach to the route selection TASK
    Autorzy:
    Guze, S.
    Neumann, T.
    Wilczyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/259029.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    liquid cargo transport
    Dempster-Shaffer Theory
    STS
    AHP
    multi-criteria optimization
    Opis:
    The main aim of the paper is to present the possibility of use of the multi-criteria optimization method Analytical Hierarchy Process (AHP) to liquid cargo transportation by sea. Finding the optimal solution is not simple. There are many factors influencing the shipping process. In the case of liquid cargo, the most important thing is the safety of the crew, ship, and environment. Therefore, the Mathematical Theory of Evidence is introduced and used to determine the optimal path in terms of time and safety of transport. Moreover, the details of liquid cargo transport process are described with particular attention to ship to ship operations. Besides, the basic concept of the AHP method, steps of the algorithm are introduced. Finally, the multicriteria optimization of the transport of the liquid cargo from the Persian Gulf to Port of Gdansk is done. It is based on the experts’ opinions.
    Źródło:
    Polish Maritime Research; 2017, S 1; 89-96
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Internet photogrammetry for inspection of seaports
    Autorzy:
    Paszotta, Z.
    Szumilo, M.
    Szulwic, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/259213.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    inspection of wharf
    security of seaports
    registration of cargo ships
    UAV (unmanned aerial vehicles)
    Opis:
    This paper intends to point out the possibility of using Internet photogrammetry to construct 3D models from the images obtained by means of UAVs (Unmanned Aerial Vehicles). The solutions may be useful for the inspection of ports as to the content of cargo, transport safety or the assessment of the technical infrastructure of port and quays. The solution can be a complement to measurements made by using laser scanning and traditional surveying methods. In this paper the authors recommend a solution useful for creating 3D models from images acquired by the UAV using non-metric images from digital cameras. The developed algorithms, created and presented software allows to generate 3D models through the Internet in two modes: anaglyph and display in shutter systems. The problem of 3D image generation in photogrammetry is solved by using epipolar images. The appropriate method was presented by Kreiling in 1976. However, it applies to photogrammetric images for which the internal orientation is known. In the case of digital images obtained with non-metric cameras it is required to use another solution based on the fundamental matrix concept, introduced by Luong in 1992. In order to determine the matrix which defines the relationship between left and right digital image it is required to have at least eight homologous points. To determine the solution it is necessary to use the SVD (singular value decomposition). By using the fundamental matrix the epipolar lines are determined, which makes the correct orientation of images making stereo pairs, possible. The appropriate mathematical bases and illustrations are included in the publication.
    Źródło:
    Polish Maritime Research; 2017, S 1; 174-181
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review of the container ship loading model – cause analysis of cargo damage and/or loss
    Autorzy:
    Kaup, Magdalena
    Łozowicka, Dorota
    Baszak, Karolina
    Ślączka, Wojciech
    Kalbarczyk-Jedynak, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/32898223.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    operations process modelling
    safety management
    container
    loss of cargo
    maritime transport
    means of transport
    Opis:
    As the maritime transport of containers continues to grow and container ships change in terms of design and construction, it is important to ensure the appropriate level of safety for this type of transport. Over the decades, the size and cargo capacity of container ships have been changing, and so have their manoeuvring restrictions and required stability criteria. It seems that changes in the regulations, technological development and increased stability requirements are not yielding satisfactory results – the causes of container ship accidents continue to show similar patterns. The present article refers to the problem of ensuring safety in sea container transport, with a particular focus on cargo processes. Its purpose is to determine cause-and-effect relations leading to the loss of containers at sea, and to develop a model of loading that could significantly raise the level of safety of container transport. The article provides a general description of threats to ships related to weather conditions, loading methods or stability limitations. A statistical analysis of the occurrence of damage and/or loss of cargo from container ships was carried out and the risk of cargo loss was assessed on the basis of data from 2015‒2019. A Pareto diagram was used for this purpose. The authors present the concept of the container ship loading model, which may contribute to increasing the safety of shipping in the future.
    Źródło:
    Polish Maritime Research; 2022, 4; 26-35
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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