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    Wyświetlanie 1-5 z 5
    Tytuł:
    Queueing theory as an instrument of optimization operational and economic sphere of port terminals - case study
    Autorzy:
    Grzelakowski, Andrzej S.
    Karaś, Adrianna
    Powiązania:
    https://bibliotekanauki.pl/articles/2203763.pdf
    Data publikacji:
    2022
    Wydawca:
    Wyższa Szkoła Logistyki
    Tematy:
    port terminal
    mass service system
    queuing theory
    terminal operating effectiveness
    terminal efficiency
    terminal added value
    terminal portowy
    system obsługi masowej
    teoria kolejek
    efektywność pracy terminala
    efektywność terminala
    wartość dodana terminala
    Opis:
    Background: The maritime port terminals, handling cargo and servicing maritime and land means of transport with variable intensity over time, operate as mass service systems where the process of notifying and fulfilling needs usually occur at random. The main research problem was to determine the interdependence between the mechanism of reporting and meeting the demand for terminal services and its effectiveness measured in terms of operational efficiency and profitability. Methods: The aim of research involves evaluating the terminal operational mechanism and evaluating it under operational categories, that is, operational stability and efficiency, and economic ones, i.e., effectiveness with respect to costs and revenue. To achieve the aim of research, the theory of mass service was applied, with the use of queuing theory as well as case study. The research was conducted in an example of bulk handling terminal, i.e. HES Gdynia Bulk Terminal. Results: In the article, the authors assumed that the bulk cargo handling terminal in Gdynia operates as a queueing model. Therefore, it was possible to analyse the operating mechanism of the selected port terminal as a logistics system and a link in the supply chain by characterising it in terms of technical and operational efficiency and economic and financial effectiveness. Conclusions: So far, such terminals have not the subject of this kind research, because researchers focused predominantly on seaports as composite multimodal transport nodes. The results of the conducted research confirm the previously formulated hypothesis, indicating that queueing theory can be used as an useful instrument to optimize the efficiency and effectiveness of bulk cargo terminals.
    Źródło:
    LogForum; 2022, 18, 3; 345--355
    1734-459X
    Pojawia się w:
    LogForum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficiency Container Ports in Brazil: A DEA and FDH Approach
    Autorzy:
    Cabral, Alexandra Maria Rios
    Ramos, Francisco S.
    Powiązania:
    https://bibliotekanauki.pl/articles/14476432.pdf
    Data publikacji:
    2018-03-15
    Wydawca:
    Wyższa Szkoła Bankowa we Wrocławiu
    Tematy:
    DEA
    FDH
    container terminal
    Brazilian ports
    port efficiency
    technical efficiency
    Opis:
    Aim: This study aims to evaluate the technical efficiency of 44 Brazilian port terminals that handled containers in 2016. The evaluation will first proceed by identifying the main benchmarks. It will then provide an analysis of variables that may have an effect on technical efficiency as well as the nature of their relationship with the latter--namely: container movement and specialized terminals.   Design / Research methods: In this work we apply the techniques of Data Envelopment Analysis and Free Disposal Hull. Output-oriented models were constructed, using three inputs - berth depth, berth length and number of berths, and three outputs - number of containers handled, medium board measured in container handled per hour of mooring, and medium consignment rate measured in container throughput per ship.   Conclusions / findings: The main results show that half of the terminals have an inefficient infrastructure, with capacity larger than necessary to meet current demand for transportation of containers. In addition, there is a strong relationship between the efficiency and size of a terminal port and between the efficiency and degree of specialization. Moreover, the private use terminal of (TUP) Itacal and public quay OCRIM can serve as benchmarks for most of the terminals.   Originality / value of the article: Relatively few works in the literature tried to measure technical efficiency for developing countries. Besides that, none of the works found regarding Brazilian ports have shown the scenario after promulgation of the Port’s Law in 2013, and only a few used container cargo as focus. This article is of interest for scientists of the sector, exporters/importers, and Brazilian Government officers interested in observing the effects of public policies aimed at the sector. We also suggest future work concerning the sector's improvements which can follow from our findings. 
    Źródło:
    Central European Review of Economics and Management; 2018, 2, 1; 43-64
    2543-9472
    Pojawia się w:
    Central European Review of Economics and Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis and evaluation of the use of LNG as a fuel in the Polish road transport in terms of minimizing energy losses
    Autorzy:
    Złoczowska, Ewelina
    Ślączka, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/24202538.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    LNG
    road transport
    Świnoujście terminal
    minimization of energy losses
    energy efficiency
    fuel
    Opis:
    This study characterizes the distribution chain of liquefied natural gas (LNG) in Poland, using the terminal in Świnoujście as the “source of LNG”. The focus is primarily on the possibility of LNG distribution for road transport, taking into account the effective use of its energy potential. During the transport and storage of LNG it was found that the evaporation of LNG, the so-called boil-off gas (BOG), is a significant problem that leads to an increased pressure in the tank. Therefore, the possibility of using BOG in individual links of the LNG supply chain is indicated. One prospect is its compression to high pressure, which produces compressed natural gas (CNG) fuels. Thus, this paper specifies the influence of the initial BOG gas pressure on the unit compression work and analyses the change in the compression unit work, which depends on the final CNG fuel pressure, with a specific assumption for the BOG pressure.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 71 (143); 22--30
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the efficiency of port container terminals with the use of the Data Envelopment Analysis method of relative productivity evaluation
    Analiza efektywności portowych terminali kontenerowych z zastosowaniem metody badania produktywności względnej Data Envelopment Analysis
    Autorzy:
    Wiśnicki, B.
    Chybowski, L.
    Czarnecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/410123.pdf
    Data publikacji:
    2017
    Wydawca:
    STE GROUP
    Tematy:
    container terminals
    transport efficiency
    transport system modelling
    terminal kontenerowy
    efektywność transportu
    modelowanie systemów transportowych
    Opis:
    The article presents a method for evaluating the efficiency of port container terminals. The research was conducted for nine European terminals which use different handling technologies. The terminals have been divided due to the level of automation of transport processes. In the efficiency research DEA (Data Envelopment Analysis) method is applied, that was previously used in studies of the relative productivity in the industry. This method allows you to multicriteria process analysis based on the properly selected production system model processing input parameters on output. Conclusions from analysis can be a ground for making a decision on organizational or investment issues.
    Artykuł prezentuje metodę oceny efektywności portowych terminali kontenerowych. Badania przeprowadzono dla dziewięciu terminali europejskich, które stosują odmienne technologie przeładunkowo-składowe. Terminale zostały podzielone ze względu na poziom automatyzacji procesów transportowych. W badaniu efektywności zastosowano metodę DEA (Data Envelopment Analysis), wykorzystywaną wcześniej do w badaniach produktywności względnej w przemyśle. Metoda ta pozwala na wielokryterialną analizę procesu w oparciu o właściwie dobrany model przetwarzający parametry wejściowe na wyjściowe. Wnioski z analizy mogą być podstawą do podjęcia decyzji o charakterze organizacyjnym lub inwestycyjnym.
    Źródło:
    Management Systems in Production Engineering; 2017, 1 (25); 9-15
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determinants of Operational Efficiency at Chemical Cargo Terminals
    Autorzy:
    Gülcan, T.A.
    Esmer, K.
    Zorba, Y.
    Şengönül, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/116047.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Chemical Cargo
    Intermodal Transport
    Chemical Cargo Terminal
    Operational Efficiency
    Globalisation
    Global Supply Chains
    Efficient Transportation System
    Automatic Loading and Unloading System
    Opis:
    In today’s globalized world, one of the requirements of global supply chains is efficient transportation systems. Approximately 80 per cent of world merchandise trade carried by sea and handled by ports worldwide. For this reason, maritime transport has the strategic economic importance. Loading of oil and gas has the biggest share (%30) in commodities carried by sea and 2.9 billion tons oil and gas loaded to ship in 2013. This study is focus on chemical cargo terminals which is a special terminal form where high and international levels of safety and quality elements applied. Unlike conventional bulk cargo and container cargo operations, chemical cargo operations include own priorities, applications, and the evaluation criteria. The aim of this study is to perform a qualitative research to determine the factors affecting the operational efficiency of ship, berth and warehousing operations in chemical cargo terminals.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 289-293
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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