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    Wyświetlanie 1-5 z 5
    Tytuł:
    Handling and transportation properties of rapeseed biomass as affected by particle size
    Autorzy:
    Bojanowska, Milena
    Powiązania:
    https://bibliotekanauki.pl/articles/29521042.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    rapeseed meal
    rapeseed cake
    canola
    biomass
    agricultural commodities
    bulk storage
    flowability
    logistics vulnerability
    particle size
    angle of repose
    porosity
    bulk density
    agricultural bulk solids
    Opis:
    Rapeseed by-products of seeds de-oiling, particularly expellers and post-extracted meal, are currently considered an important biomass that can be used as an alternative energy source, either in raw form or after conversion to biochar. Rapeseed biomass represents a difficult-to-handle cargo, mainly due to its sensitivity to mechanical, climatic, and biological impacts, as well as its dusty nature. This study aims to determine the physical properties of rapeseed meals and their fractions. Morphological and chemical features of six particle sets are investigated in order to explain the variation in their physical properties having importance in handling and transportation processes. The true density of fractions increases when the particle size decreases due to the diminishing quantitative share of seed coats. No correlation is observed between true and bulk densities, as the particle shape, surface sculpture, and adhesion affect the mutual particle arrangements. Along with a decrease in the particle size from 0.4 mm, a rapid decrease in the flowability is observed. The tendency of the finest dust (d < 0.075 mm) to form agglomerated complexes causes its lower bulk density, higher porosity, and higher angles of repose in comparison to coarse dust (0.075–0.4 mm). It is concluded that a relatively low tendency to free flowing of natural RSM is mainly caused by its wide-ranging particle size distribution and their geometry differentiation, which facilitate mutual particle interlockings. The known cases of blockages of silos, bins, hoppers, and transfer chutes may be mainly caused by the powder fractions (< 0.2 mm), with a much lower flowability than other particles.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2023, 74 (146); 5-15
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consequences of the pandemic constraints on the supply chain of companies: an exploratory approach
    Konsekwencje ograniczeń pandemicznych dla łańcucha dostaw przedsiębiorstw: podejście eksploracyjne
    Autorzy:
    Gomes, Sofia
    Lopes, João M.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315169.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    logistics
    supply chain vulnerability
    resilience
    COVID-19 pandemic
    supply chain disruptions
    logistyka
    podatność łańcucha dostaw
    odporność
    pandemia COVID-19
    zakłócenia w łańcuchu dostaw
    Opis:
    The disruption in the supply chain imposed by the COVID-19 pandemic has posed important challenges for companies. This study explores the consequences of the pandemic on the supply chain of companies, identifying the main problems and proposing solutions for future disruptive situations. The qualitative study presented is based on the study of multiple cases obtained through interviews with Portuguese companies. Exploring the multiple cases of companies revealed that companies with less resilient and more vulnerable supply chains, both upstream and downstream, were most affected by the pandemic. The supply chain that includes redundancies and adopting appropriate risk management tools by companies guarantees greater flexibility for supply chains to adapt more quickly to disruptive situations. This exploratory study contributes to the approach of the Complex Adaptive System theory and brings new insights into the consequences of the pandemic on supply chains.
    Zakłócenia w łańcuchu dostaw narzucone przez pandemię COVID-19 spowodowały istotne wyzwania dla firm. W niniejszym opracowaniu zbadano konsekwencje pandemii dla łańcucha dostaw firm, identyfikując główne problemy i proponując rozwiązania dla przyszłych sytuacji zakłócających. Przedstawione badanie jakościowe opiera się na badaniu wielokrotnych przypadków uzyskanych dzięki wywiadom z portugalskimi firmami. Badanie wielu przypadków przedsiębiorstw ujawniło, że firmy o mniej odpornych i bardziej wrażliwych łańcuchach dostaw, zarówno w górę, jak i w dół łańcucha, zostały najbardziej dotknięte przez pandemię. Łańcuch dostaw obejmujący redundancje i przyjęcie przez firmy odpowiednich narzędzi zarządzania ryzykiem gwarantuje większą elastyczność łańcuchów dostaw w celu szybszego dostosowania się do sytuacji zakłócających. To badanie eksploracyjne wnosi wkład do podejścia teorii Complex Adaptive System i przynosi nowe spojrzenie na konsekwencje pandemii dla łańcuchów dostaw.
    Źródło:
    Polish Journal of Management Studies; 2022, 26, 2; 162--171
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unfulfilled advantages of the lean supply chain against contemporary threats: a sketch of changes in the scientific approach
    Autorzy:
    Jedliński, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2033630.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    logistics
    disorders-vulnerability-resilience
    Lean Supply Chains vs Resilience Supply Chain
    Opis:
    The progressive unpredictability of socio-economic or biological changes (e.g. the SARS-CoV-2/COVID 19 pandemic), the multi-directional nature of their impact, the variability of intensity, and the uncertainty in estimating potential effects hinders the stable and planned operation of modern supply chains. This irreversible situation proves the high unreliability of existing traditional measuring instruments of classical economics and the methods used so far in the field of management and quality sciences. This article aims to present an exemplary set of expectations towards contemporary supply chains that are particularly relevant to the emerging market challenges in the form of mega-trends of threats and conditions, also those particularly emphasized during the SARS-CoV-2/COVID-19 pandemic. It is primarily a pandemic (taken as a critical exogenous factor) resulting in severe “disorders” in supply chains. The actual level of supply chain resilience depends on its inherent characteristics and is termed “vulnerabilities”, while an active supply chain response to emerging “disorders” is treated as its “resilience”. For these reasons, the author proposes a holistic view of the nature of the supply chain system and its processes. The proposed approach, based on the method of interpretative (qualitative) research enriched with the idiographic nomothetic approach, is treated as a creative alternative that does not exclude other possibilities of perception of the supply chain, but, in its intellectual diversity, complements other methods of understanding its system, processes, and logistics management. Such an approach with a dominant hypothetical-inductive character allows for creating a platform for broader scientific discussions, positioning itself in the sphere of simplifying reality or creating a theoretical construct for the possibility of formulating the foundations of the preliminary theory. These considerations lead to the conclusion that such an attempt at a new, broader perspective, both at the emerging threats and vulnerability, is related to the level of risk, demonstrating that the Supply Chain Critical Functionality is a consequence of many different factors, including time, costs, and delays in deliveries. Such a view allows for a more comprehensive systematization of the epistemological layer in the area of directional perception and application of logistics, showing many similarities but also significant differences with phenomena that are characteristic of other areas of logistics application and the perception of the conditions for the functioning of modern supply chains.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 67 (139); 61-69
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The nature of the intercontinental supply chain and the building of its resilience in a company performing quality analyzes of engine oils
    Autorzy:
    Maryniak, Anna
    Pogorzelec-Glaser, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/24202581.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    resilience
    supply chain
    mitigation
    logistics
    oil
    case study
    disruption
    vulnerability
    Opis:
    This study aims to identify a model for building a resilient supply chain in a company testing engine oil samples. Unstructured face-to-face and structured remote interviews were used as the research methods. The proposed contextual research procedure allows for the elucidation of the content of the components of the final resilient supply chain model and may facilitate theory building on the basis of future multiple case studies. As a result of the research, it was found that at the level of the described chain, its strength and continuity of flow are based on the durability of relationships with suppliers, speed, trust, and information sharing, the role of which has been explained in relation to the nature of the supply chain. Due to the nature of the chain, building its resistance on the basis of agility, which is most often indicated in model approaches, has no justification in this case. It was also established that in this process, 4.0 technologies such as the internet of things (IoT), machine learning, artificial intelligence, and cloud technologies are more important for management at the level of the entire corporation than at the level of the tested chain. The analysis covered the supply chain embedded in the industry, which (according to the author’s knowledge) was not discussed in the context of logistics processes in world literature. Therefore, the results of the work undertaken are of great cognitive value.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 72 (144); 193--200
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The resilience of social logistics systems – introduction
    Autorzy:
    Zaczyk, Mateusz
    Liebert, Filip
    Powiązania:
    https://bibliotekanauki.pl/articles/1919021.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    logistic system
    resilience
    social logistics
    social needs
    vulnerability
    system logistyczny
    odporność
    logistyka społeczna
    potrzeby społeczne
    podatność
    Opis:
    Purpose: The article aims to formulate basic assumptions defining the resilience of complex systems falling within social logistics' scope of interest. The article emphasizes the importance of general systems theory for the contemporary understanding of management sciences, with particular emphasis on logistics. The authors of the article have also characterized, based on the current state of literature, the concept of social logistics as one of the three "clean" types of logistics, positioning it alongside military and economic logistics Design/methodology/approach: The article presents an overview of approaches to the crystallizing issue of social logistics in literature. The analyzed object of research was referred to the general theory of systems and conclusions were drawn in the form of proposals to shape the social logistics system. In addition, the authors presented an original proposal for the composition of the social logistics system based on observation of the activities of social entities and in-depth analysis of Polish and foreign literature. Findings: Then it was proposed to consolidate the term 'social logistics system resilience' and to conduct empirical research along with an outline of the research procedure. The proposed research procedure will be used and the results of research conducted in accordance with it – described in subsequent articles of the authors. Social implications: In the article, it was concluded that the subject of the study is relatively broad, and the link between the topic of social logistics and supply chain resilience is a research gap that will be filled by series of articles, the starting link of which is this one. The analyzes contained in the article refer to a large extent to the problems of comfort in social life, with particular emphasis on human needs of a social nature. Originality/value The originality of the article express in compiling the issues of social logistics with issues of systems’ resilience. In the face of the constantly observed negative phenomena disrupting the functioning of social logistics systems, the topic of their resilience is of particular importance.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2020, 146; 543-558
    1641-3466
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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