Wyniki wyszukiwania - BazTech

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Queueing theory as an instrument of optimization operational and economic sphere of port terminals - case study

Grzelakowski Andrzej S., Karaś Adrianna

LogForum

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2022

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Vol. 18, no. 3

345--355

EN

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.

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Global supply chains' disruptions as a result of the COVID-19 pandemic crisis and the dynamic world container shipping market recovery

Grzelakowski Andrzej S.

Gospodarka Materiałowa i Logistyka

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2022

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nr 12

10--20

EN

The world crisis caused by the pandemic exerted significant impact on the global supply chain operations. They were subjected to numerous unprecedented disturbances which then significantly intensified as a result of the unexpected, dynamic recovery of the global container transport market. The aim of the article is to attempt a multifaceted initial assessment of the scale and widespread results of the destabilization of markets and global logistics supply chains, as well as to determine its impact on the global economy, along with an indication of the possible short- and medium-term consequences of this state for selected entities operating in global supply chains. The main hypotheses which were verified during the study were as followed: (1) the COVID-19 crisis impacted the global commodity and shipping markets with unprecedented and unknown so far force, (2) the global container shipping sector experienced historical boom during the period from October 2020 to March 2022 and was in fact a real financial beneficiary of the last crisis. The methods of economic and statistical analysis and among them the factors analysis (FA) have been used as the main analytical tool to carry out the set research goals and to verify the hypotheses. The results of this study indicate the need for greater control of the global container shipping alliances by antitrust authorities as well as for deeper structural reconstruction of the existed global logistics supply chains.

PL

Światowy kryzys spowodowany pandemią wywarł znaczny wpływ na globalne łańcuchy dostaw. Zostały one poddane licznym, niespotykanym dotychczas zakłóceniom, które następnie nieoczekiwanie nasiliły się w wyniku niespodziewanego, dynamicznego ożywienia globalnego rynku przewozów kontenerowych. Celem artykułu jest podjęcie próby dokonania wstępnej, wieloaspektowej oceny skali i skutków nieznanej dotychczas w historii rozwoju handlu i żeglugi światowej destabilizacji rynków oraz globalnych logistycznych łańcuchów dostaw. Sformułowano dwie hipotezy badawcze, które następnie poddano weryfikacji: (1) kryzys COVID-19 wpłynął na światowe rynki towarowe i żeglugowe z nieznaną i niespotykaną dotychczas siłą, oraz (2) globalny sektor żeglugi kontenerowej doświadczył w trakcie jego trwania w okresie październik 2020–marzec 2022 historycznego boomu i był realnie beneficjentem finansowym ostatniego kryzysu. Metody analizy ekonomiczno- statystycznej, a wśród nich analiza czynnikowa (FA), zostały wykorzystane jako główne narzędzie analityczne do realizacji założonych celów badawczych i weryfikacji postawionych hipotez. Uzyskane wyniki wskazują na potrzebę większej kontroli globalnych kontenerowych aliansów żeglugowych przez organy antymonopolowe, a także głębszej, strukturalnej przebudowy istniejących globalnych logistycznych łańcuchów dostaw.

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Assessment of the current state of the EU inland shipping development and its perspectives from the policy and transport market point of view

Grzelakowski Andrzej S.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2019

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nr 58 (130)

74--83

EN

The main subject of this research was to identify recent basic trends in the development of inland waterway transport in the EU as well as to evaluate this from both EU transport policy objectives and logistics markets’ requirements. For this purpose, classical statistical and economic analysis methods as well as the documentation research method were used. The basic threats and barriers to the development of inland waterway transport are indicated, as well as various actions necessary to limit or eliminate them. An attempt was also made to assess the opportunities and prospects for the development of this transport mode in the next decade in the context of the development of the broader EU transport market. The main objective of this research was to perform a market assessment of the development prospects of this mode of transport in the era of dynamic developing logistic customer service standards, as well as progressive globalization and the 4th industrial revolution (digitalization). In this respect, political versus market-oriented scenarios of the development of EU inland shipping were analyzed and evaluated. The conclusions relate to the ongoing and upcoming modal shift on the EU transport market as well as regulatory measures undertaken by the EU.