Wyniki wyszukiwania - BazTech

1

Industry Expertise Heuristics for Dimensioning Shelf Space of Rack Storage Location in a Distribution Centre with Zone Picking

Czerniachowska Kateryna, Wichniarek Radosław, Żywicki Krzysztof

Management and Production Engineering Review

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2023

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Vol. 14, No. 1

43--60

EN

Appropriate product categorization in distribution centres is important for business success because of the possibility of intuitive product finding by the picker and increased product movement. Both of these factors result in the operational efficiency of the distribution centre. The goal of this paper is to explore a model of shelf space dimensioning of storage location on a rack with vertical and horizontal product categorization in a distribution centre, where the aim is to increase total product movement/profit from all shelves of the rack. This is controlled by a packer who must complete orders by getting the goods from shelves and picking them to the container. In this problem, we develop two heuristics and compare the archived results to the CPLEX solver. The average profit ratios of both heuristics are high and approximately equal to 99%. In 10 cases, optimal solutions have been found by heuristics. The total number of possible solutions to be checked for the largest instance was reduced from 1.33 ·10156 to 1.19 ·107 thanks to the heuristic rules.

2

Optimal decision making for empty container management at seaport yard

Vinh Ngo Quang, You Sam-Sang You, Long Le Ngoc Bao, Kim Hwan-Seong

LogForum

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2023

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Vol. 19, no. 1

75--89

EN

Background: In global trade, shipping companies are forced to manage empty containers due to imbalances in international trade activities. For decision-makers, the problems require considering restrictions and an uncertain environment and repositioning or leasing the containers to satisfy the rapidly changing global demands regardless of the epidemic outbreak's impact on the seaport. The proposed approach can help decision-makers manage the empty container in port yards more effectively under market uncertainty by employing the Bellman optimality principle for the stochastic dynamic system. Methods: A stochastic production planning model is employed to cope with uncertainty and unexpected events to ensure a robust management strategy. Ito's formula describes the dynamic model for solving a stochastic differential equation. This paper uses stochastic optimal control theory to deal with efficient empty container management at the port yard. The findings have revealed the effectiveness of the proposed framework, which will provide a decision-making support scheme for efficient port operations. Results: The presented algorithm is realized by a novel approach, employing the Hamilton-Jacobi-Bellman (HJB) equation for optimal stochastic control problems. When comparing the model with and without uncertainty events, the gap is just about 0.04 %, proving the robustness of the proposed model. The results provide a decision support system for port managers when managing the empty container in the seaport yard. Conclusions: The proposed model not only figures out the optimal ordering of empty containers for each cycle but also points out the optimal safety stock level. Using a stochastic optimization approach, decision-makers can implement a strategic management policy to optimize seaport operational costs under market disruptions.

3

The new investing effectiveness evaluation multi-criteria method in modern energy supply systems

Kamrat Waldemar

Gaz, Woda i Technika Sanitarna

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2023

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Nr 10

10--17

EN

The important problem in the processes of modelling and programming the development of sustainable energy sector is the multi-criteria manner of assessing the effectiveness of investments. The goal of this paper is to show how to take into account the impact of investments in multidimensional modeling decision-making processes. This goal can be achieved through the development, presentation, and use of a new multi-criteria method of evaluating the effectiveness of investing towards to modern renewable energy sector. This innovative method was developed and tested in research for the energy sector carried out by the author. Method consist of a relatively simple way of taking into account the qualitative features of the criteria in the process of evaluating investments in the energy sector. Using the real data of the energy invested in the city of X in Poland, the effectiveness of the project was examined applying the multi-criteria method proposed by the author, and for the same purpose, the well-known ELECTRE method was used. The comparison of the results of the investment effectiveness studies by both methods confirmed the high convergence of the effects obtained in both methods. The achieved results of research very high effectiveness of the analyzed renewable energy technologies.

PL

Istotnym problemem w procesach modelowania i programowania rozwoju sektora energii zrównoważonej jest wielokryterialny sposób oceny efektywności inwestycji. Celem artykułu jest pokazanie, jak uwzględnić wpływ inwestycji w wielowymiarowym modelowaniu procesów decyzyjnych. Cel ten można osiągnąć poprzez opracowanie, prezentacje i zastosowanie nowej, wielokryterialnej metody oceny efektywności inwestycji w nowoczesnym sektorze energetyki odnawialnej. Ta innowacyjna metoda została opracowana i sprawdzona w badaniach dla sektora energetycznego prowadzonych przez autora. Metoda polega na stosunkowo prostym sposobie uwzględnienia cech jakościowych kryteriów w procesie oceny inwestycji w energetyce. Wykorzystując rzeczywiste dane dotyczące energii zainwestowanej w mieście X w Polsce, zbadano efektywność projektu, stosując zaproponowana przez autora metoda wielokryterialna i w tym samym celu wykorzystano znana metoda ELECTRE. Porównanie wyników badań efektywności inwestycji obiema metodami potwierdziło wysoką zbieżność efektów uzyskanych obiema metodami. Uzyskane wyniki badan bardzo wysokiej efektywności analizowanych technologii energetyki odnawialnej.

4

Decision-making model using the Analytical Hierarchy Process for the selection of the type of concrete and the method of its maintenance in dry, hot climate conditions

Hsino Mahmoud, Jasiczak Józef

Archives of Civil Engineering

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2023

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Vol. 69, nr 3

385--403

EN

The article presents selected types of phase change materials (PCM) and their properties in terms of applications in construction and concrete technology. The purpose of using PCM is to allow the technological barrier to be exceeded in hot and dry climate conditions, enabling the construction of non-cracking concrete structures. Methodology of the multi-criteria decision-making process with the use of a relatively newdecision-aking tool in construction - the Analytical Hierarchical Process (AHP) is presented. Theoretical aspects of the method and an example of its practical use for the selection of the best material variant and concrete care method in the dry Syrian climate are presented. The conclusions resulting from the presented article concern two areas, i.e. the advisability of using phase change materials for temperature regulation in the maturing fresh concrete in dry climate conditions and the attractiveness of the AHP method justifying the advisability of choosing the maintenance methods in such conditions.

PL

W artykule przedstawiono wybrane rodzaje materiałów zmiennofazowych (PCM) oraz ich właściwości pod kątem zastosowań w budownictwie, w tym w technologii betonu. Celem stosowania PCM jako dodatku do świeżego betonu jest umożliwienie przekroczenia określonych barier technologicznych występujących w warunkach klimatu gorącego i suchego, gwarantując schładzanie betonu i tym samym wykonanie niezarysowanych konstrukcji betonowych. Przedstawiono metodologię wielokryterialnego procesu decyzyjnego związanego z wyborem różnych wariantów pielęgnacji betonu w warunkach ekstremalnie suchych z wykorzystaniem stosunkowo nowego narzędzia decyzyjnego w budownictwie jakim jest AHP tj. Analytic Hierarchy Process. Przedstawiono teoretyczne aspekty metody oraz przykład jej praktycznego zastosowania do wyboru najlepszego rodzaju cementu oraz betonu i metody jego pielęgnacji w suchym klimacie syryjskim. Wnioski płynące z przedstawionego artykułu dotyczą dwóch obszarów, tj. celowości stosowania materiałów PCM z przemianą fazową o stosunkowo niskiej temperaturze do regulacji temperatury w dojrzewającym świeżym betonie w suchych warunkach klimatycznych oraz atrakcyjności metody AHP uzasadniającej celowość wyboru alternatywnych metod pielęgnacji młodego betonu w takich warunkach.

5

Identification of leading factors supporting decisions in preventive quality management

Misztal Agnieszka, Drzewiecka-Dahlke Milena, Marczewska-Kuźma Roma, Gruszka Józef

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2022

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z. 162

473--500

EN

Purpose: The main aim of the article is to present the results of research of entrepreneurs who maintain a certified quality management system in terms of leading factors supporting decisions of a preventive approach to management. Design/methodology/approach: Interview method conducted in manufacturing companies with an implemented and certified quality management system using CATI technique Findings: Research has shown that in large industrial enterprises the key stimulants of preventive actions are, above all, efficient information flow, technical and organizational order, as well as consistent pursuit of the goal. Smaller enterprises put the main emphasis on maintaining good relations with the environment, safety and ergonomics of work, as well as skillful selection of suppliers. Research limitations/implications: The authors of the paper see the need to continue research in the field of in-depth analysis of selected factors in relation to the effectiveness of the actions taken and the possibility of supporting information. Practical implications: Entrepreneurs with knowledge of key stimulants will make decisions more consciously and focused on a targeted analysis of data in order to search for relevant premises to prevent non-compliance. Originality/value: This paper concerns key factors influencing a preventive approach that can support decision-making. For the purposes of multicriteria decision-making processes, it is valuable to know the key stimuli characteristic of effective preventive actions. An additional value of the article is the showing of the factors with a differentiation by company size. This enables a more relevant focus of the research results.

6

Cognitive model of intuition in solving investment problems

Ziuziakowski Milan

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2022

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Vol. 26, No 1

1--24

EN

The problem of rational investment and allocation of funds for an agent with individual goals and experiences is presented in this paper. Simon Herbert’s model of decision making, the EPAM model of intuition as a decision tree with the accompanying Soar software which is a modern cognitive architecture for modeling intelligent agents are considered. The state space and selection of decision rules for determining the optimal solution are presented, emphasizing the role of intuition. A decision-making scheme is presented, leading to the acquisition of distinct experiences resulting in an increase in the procedural knowledge stored in the long-term memory. The next stage is to visualize the decision-making process in the working memory in order to satisfactorily allocate funds into three categories. The results obtained indicate the intuitively correct decision according to an assumed quality factor which is the level of overall agent satisfaction. Reference is also made to the possible application of GAN neural networks, showing their potential in supporting intuitive decision making in the stock market. The considerations confirm the validity of an intuitive approach to business solutions and also enable a closer look at multidimensional aspects of intuition. The considerations confirm the validity of the intuitive approach to business solutions, as well as presenting an insight into multidimensional aspects of intuition itself.

7

Information in the decision-making process

Ściborek Zbigniew, Borucka Anna

Systemy Logistyczne Wojsk

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2022

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Vol. 56, no. 1

147--160

EN

The thesis that the variability of conditions in which organizations operate has an impact on the decisions made about their functioning is the starting point for achieving the research objective and presenting the research findings. The objective of the research was to demonstrate the importance of the information system in the organization and to visualize the impact of information on the decision-making process, also in terms of shaping the future. The analysis of a number of theoretical studies has led to conclusions that unequivocally prove that every decision should be based on reliable information. This is strongly emphasized in the article. The main methods used were literature analysis, synthesis, mathematical modeling and desk research. In addition, the paper presents tools for describing the uncertainty associated with the occurrence of random phenomenon, i.e., for assessing the amount of information conveyed by the observation of random phenomenon and for comparing two variables with different information potential. The analyses conducted clearly indicate that decision making and information must be closely linked. The results of the research inquiries in the publication also indicate the role to be played by the information system in the organization. It contains the state-ment that no decision can be made without information. The approach adopted in the article allowed for presentation of essential research findings, while providing a basis for further, extended research on this extremely important and topical issue, especially in the context of the internationalization of a number of phe-nomena and processes.

PL

Teza, że zmienność warunków funkcjonowania organizacji nie pozostaje bez wpływu na dokonywane rozstrzygnięcia związane z ich funkcjonowaniem, jest punktem wyjścia do osiągnięcia założonego celu i prezentacji wyników badań. Celem podjętych badań było wykazanie znaczenia systemu informacyjnego w organizacji i unaocznienie wpływu informacji na proces decyzyjny, także pod kątem kształtowania przyszłości. W wyniku analizy wielu opracowań teoretycznych, także zawierających wyniki przeprowadzonych badań, wysnuto liczne wnioski. One to jednoznacznie dowodzą, że podstawą każdego rozstrzygnięcia powinna być wiarygodna informacja. Jest to mocno podkreślone w artykule. Ukazano również potrzebę podejmowania działań ukierunkowanych na zdobycie, w miarę szybko, nieodzownych informacji, aby stworzyć podstawy do korzystnych rozstrzygnięć dla firm, które funkcjonują w zmieniających się warunkach. Nieodzowne są także wysokie kompetencje informacyjne menedżerów. Przeprowadzone analizy jednoznacznie wskazują, że decydowanie i informacja muszą być ze sobą ściśle pozwiązane. Wyniki dociekań naukowych zawarte w publikacji wskazują również na rolę, jaką ma spełniać system informacyjny w organizacji, który choć składa się z trzech etapów, to są one logicznie powiązane, fazy te charakteryzuje pragmatyzm naukowy. Zawarto twierdzenie, że bez informacji nie ma decyzji. W artykule przyjęte podejście umożliwiło uzyskanie przekrojowego charakteru prezentacji wyników badań, dając jednocześnie podstawy do dalszych, poszerzonych badań tego niezwykle istotnego oraz aktualnego problemu, zwłaszcza w kontekście umiędzynarodowiania wielu zjawisk i procesów.

8

Decision making, some individual decision-making styles and software for decision making and strategic planning

Stoyanova Petrova Elitsa, Ştefănescu Roxana

Przegląd Nauk o Obronności

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2022

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R. 7, Nr 15

1--12

EN

Objectives: This article presents the eternal relevance of the decision-making process and its inseparable connection with the personality of the decision-maker. Broadly speaking, the subject of consideration is the decision-making process. The main goal of the authors is to review the decision-making process, some styles of decision making and offer information about some types of software for decision making and strategic planning. Methods: The scientific methodology used is a combination of a theoretical review of the issue, a critical scientific review and the presentation of new scientific advances in the world of practice in terms of decision-making through technical means and methods. Results: The conditions that the decisions must meet in order to be useful and accepted, some styles of decision-making processes and also the use of decision-making software are analysed in the article. Conclusions: The authors are aware that this is a repeatedly researched topic and it is in the last part that a novelty of an applied-practical nature is definitely found. Several software for decision making and strategic planning software, which is a category of software critical for organizational leaders who want to ensure more strategic decision-making and implement simpler and more effective reporting are presented in the last part of the article. This software provides a place to manage all strategic elements, in order to achieve high-level organizational structure and long-term goals.

9

Kompleksowe podejście do prognozowania i ograniczania poziomu ryzyka w podejmowaniu zamówień na roboty w budownictwie drogowym

Krawczyńska-Piechna Anna, Budek-Wiśniewska Katarzyna

Materiały Budowlane

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2022

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nr 12

92--97

PL

Analiza zagrożeń stanowi pierwszy etap prezentowanego w artykule kompleksowego podejścia do zarządzania ryzkiem w podejmowaniu zamówień na roboty w budownictwie drogowym. Drugi etap polega na ocenie możliwości przeciwdziałania tym zagrożeniom przez programy naprawcze (programy ograniczania zagrożeń). W prezentowanym podejściu proponuje się optymalizację doboru tych programów pod kątem maksymalnej redukcji zagrożeń przy jednoczesnym ograniczeniu kosztów zastosowania tych programów. W artykule przedstawiono schemat ideowy systemu doradczego, model matematyczny omawianego problemu i przykład obliczeniowy, obrazujący istotę proponowanego podejścia do analizy ryzyka.

EN

The risk analysis is then the first stage of the comprehensive approach to risk management in taking orders for road construction works presented in the paper. The second stage is to counteract these threats through risk reduction programs. In the presented approach, it is proposed to optimize the selection of these programs in terms of the maximum reduction of threats while reducing the costs of using these programs. The paper presents a block diagram of the advisory system, introduces a mathematical model of the discussed problem and illustrates the essence of the proposed approach to risk analysis with a computational example.

10

Heuristics for dimensioning the shelf space on the rack with vertical and horizontal product categorisation in the distribution centre with zone picking

Czerniachowska Kateryna, Wichniarek Radosław, Żywicki Krzysztof

Management and Production Engineering Review

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2022

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Vol. 13, No. 2

31--47

EN

Distribution centres are the important elements of modern supply chains. A distribution centre stores and ships products. In this paper, we investigate the model of the dimensioning of shelf space on the rack with vertical and horizontal product categorisation in a distribution centre, where the objective is to maximise the total product movement/profit from all shelves of the rack which is being managed by a packer who needs to complete orders selecting the products from the shelves and picking them to the container. We apply two newly developed heuristics to this problem and compare the results to the optimal solution found by the CPLEX solver. There are 8 steering parameters that allow for reducing the search space implemented in heuristics. Among them are parameters that decrease the number of prod- ucts on the shelves, the category width range for assigning most space for the most profitable products within the category, two versions of steering parameters for the number of generated product allocations, the step parameters for the intensity of solution diversification, and the movement/profit below which the solutions are not generated. The computational results are presented and indicate that higher-quality solutions can be obtained using the new heuristics. In 10 from 15 tests, both heuristics can find optimal solutions without exploring the whole solution space. For the rest test sets, the solutions received by heuristics are not less than 92.58%.

11

Evaluating logistic systems of building materials supply

Rzepecki Łukasz

Journal of civil engineering and transport

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2022

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Vol. 4, No. 3

67--76

EN

There are many logistical tasks in the field of supplying construction materials, as well as financial and information flows in construction projects. All logistical processes related to the flow of resources, physical, informational, and financial, occurring between the different elements of the company's structure make up its logistical system. One of the many decisions made during the planning of a construction project is the choice of how to control the logistics system of supply. It is impossible to indicate a universal system that will optimally meet the needs of many construction projects due to the individual nature of each project. Properly selected type of logistic service and structure of logistic system allow one to reduce risk in supply chain management. This paper proposes a multi-criteria analysis to evaluate the models of the logistic system of supply in the execution of a construction project. The Analytic Hierarchy Process AHP was used for the comparative evaluation, allowing multi-criteria pairwise comparisons of the various systems. The proposed approach allows to indicate the structure of the logistic system, ensuring continuity of construction output and also reduction of logistic costs.

PL

Istnieje wiele zadań logistycznych w sferze zaopatrzenia w wyroby budowlane oraz w obszarze przepływów środków finansowych i informacji w przedsięwzięciach związanych z realizacją robót budowlanych. Wszystkie procesy logistyczne związane z przepływem zasobów fizycznych, informacyjnych i finansowych, zachodzące pomiędzy poszczególnymi elementami struktury przedsiębiorstwa składają się na jego system logistyczny. Jedną z wielu decyzji podejmowanych w trakcie planowania przedsięwzięcia budowlanego jest wybór sposobu sterowania systemem logistycznym zaopatrzenia. Nie można wskazać uniwersalnego systemu, który będzie w optymalny sposób zaspokajał potrzeby wielu zamierzeń budowlanych, ze względu na indywidualny charakter każdego przedsięwzięcia. Odpowiednio dobrany typ obsługi logistycznej i struktura systemu logistycznego pozwala ograniczyć ryzyko w zarządzaniu łańcuchem dostaw. W artykule zaproponowano analizę wielokryterialną do oceny modeli systemu logistycznego zaopatrzenia przy realizacji przedsięwzięcia budowlanego. Do oceny porównawczej zastosowano hierarchiczny proces decyzyjny AHP, umożliwiający wielokryterialne porównania parami poszczególnych systemów. Zaproponowane podejście pozwala na wskazanie struktury systemu logistycznego, zapewniającej ciągłość produkcji budowlanej a także redukcję kosztów logistycznych.

12

Organizational responses to sustainable development challenges - conditions & consequences

Janiszewski Adam

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2021

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z. 150

29--46

EN

Purpose: The aim of the paper is to discuss assumptions that stand behind the idea that, in order to analyze a way in which organizations are willing to respond to environmental challenges, it is necessary to consider how the diffusion of knowledge related to sustainable management practices can impact on decision making dependent on managers’ cognitive frames. The analysis is focused on the sensemaking process initiated by a necessity to make a decision on whether to engage in a sustainability project involving steps to be made to protect natural environment. The attention is paid to its possible realization dependent on cognitive frames used by decision makers. This way of analysis allows for better understanding of factors which may hinder enterprises from implementing sustainability idea. In the paper current literature related to the topic is reviewed and next selected issues considered as critical for understanding the matter are described and discussed. Design/methodology/approach: Theoretical analysis is conducted and the key assumptions of critical realism related to ontological and epistemological dimensions are implemented. The importance of abductive way of thinking is outlined. Findings: In general, it is argued that managers who are more likely to accept paradoxical nature of challenges related to the implementation of sustainability tools should find it more useful to follow multidimensional paths through which they may reach stakeholders. It is also presented that in order to show how decisions as to implement the sustainability idea can be made, it is necessary to take into account consequences that are to arise from the fact that attitudes towards sustainability management are influenced by historical conditions. Because of the wide array of actors who may contribute to the successful implementation of the sustainability idea, it is predicted that different cognitive approaches should be used. The arguments that are provided appear to also prove that it is useful to consider deeply relations among sensemaking process and cognitive frames used by managers. Originality/value: The paper includes an authorial analysis in which conclusions are inferred based on hitherto conducted research and formulated research propositions related to sensemaking process, cognitive aspects of making decisions as well as to issues of building legitimacy in the light of environmental challenges which modern enterprises need to deal with. The analysis can provide decision makers with some new insights as to why they make decisions as they used to, which next should allow them to change their habits.

13

The combination of Taguchi – Entropy – WASPAS – PIV methods for multi-criteria decision making when external cylindrical grinding of 65G steel

Trung Do Duc

Journal of Machine Engineering

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2021

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Vol. 21, No. 4

90--105

EN

This paper presents a study on the multi-creteria decision making in the external cylindrical grinding process of 65G steel. An aluminum oxide grinding wheel was used in the experimental process. The experimental matrix was designed according to the Taguchi method with twenty-seven experiments. Five parameters were used to design the experimental matrix including workpiece velocity, feed rate, depth of cut, dressing feed rate, and dressing depth of cut. The surface roughness and Material Removal Rate (MRR) were determined for each experiment. This is the first time that the Weighted Aggregates Sum Product ASsessment (WASPAS) and Proximity Indexed Value (PIV) methods were used to make the multi-criteria decision for grinding process. The weighs of ouput criteria (surface roughness and MRR) were determined by Entropy method. Both WASPAS and PIV methods determined an experiment that simultaneously ensured the “minimum value” of surface roughness and “maximum value” of MRR.

14

Dobór wsadu do realizacji codziennych zleceń produkcyjnych w hutach

Arzola-Ruiz José, Suarez-Garcia Luis, Kindelán-Sira Miguel-Ange, Vargas-Agüero José-Angel

Hutnik, Wiadomości Hutnicze

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2021

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Vol. 88, nr 2

8--12

PL

Dobór partii półfabrykatów z instalacji odlewania ciągłego do produkcji gotowych profili stalowych w walcarkach ciągłych musi zapewniać co najmniej przekroczenie właściwości mechanicznych w stosunku do ich wartości normatywnych w hutnictwie. W związku z tym konieczne staje się oszacowanie właściwości partii począwszy od ich składu chemicznego poprzez wymiary i stan powierzchni wlewków, a skończywszy na gotowych profilach. W prezentowanej pracy oszacowanie to jest dokonywane za pomocą radialnych sieci neuronowych, wychodząc z dostępnych danych dotyczących właściwości mechanicznych uzyskanych z kontroli jakości warsztatów hutnictwa. Analiza systemowa funkcji produkcji w hutach pozwala na sformułowanie koncepcyjnego dwupoziomowego modelu optymalizacji zadania związanego z tym zadaniem. Model ten dzieli się na pod-modele generowania opcji przeznaczenia partii, jako dyskretna optymalizacja stochastyczna i wybór partii, które mają zaspokoić podzadania związane z popytem na sprzedaż. Przedstawiono również zarysy rozwiązań etapów generacji i selekcji.

EN

The selection of a batch of semi-finished products from the continuous casting installation for the production of finished steel profiles in continuous rolling mills must ensure that the mechanical properties are at least exceeded in relation to their standard values in metallurgy. Due this, becomes necessary the estimation of properties of the batches starting from its chemical composition by dimensions and state of surface of the billets ending on finished profiles. In the presented work this estimation is done by radial based neural networks, starting from the available mechanical properties data obtained from the quality control of the workshops of some steel-making company. The systemic analysis of production function in steel factories allows to formulate the conceptual bi-level optimization model formulation of the related task. This model breaks down in sub-models of the batches destination options generation, as a discrete stochastic optimization and the selection of the batches to be to satisfy the sales demand sub-tasks. Solutions outlines of the generation and selection stages are also presented.

15

Zarządzanie łańcuchem logistycznym w systemach magazynowania zbóż

Rut Joanna, Kulińska Ewa

Gospodarka Materiałowa i Logistyka

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2021

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nr 12

15--26

PL

W każdym procesie działalności gospodarczej przedsiębiorstw występują procesy technologiczne, a magazyn i związane z nim czynności są nieodłącznym atrybutem procesu logistycznego. Zarządzanie łańcuchem logistycznym to wielowymiarowe działania obejmujące procesy informacyjno-decyzyjne oraz procesy wykorzystujące wiedzę właściwych instrumentów kierowania i kontroli na poziomie strategicznym i operacyjnym. Odpowiednie podejście do analizy zarządzania logistycznego w rozwiązywaniu problemów obejmujących gospodarkę magazynową w przedsiębiorstwach wymaga rozpoznania wagi problemów i określenia przyczyn ich powstania. Przedmiotem analizy i oceny w opracowaniu są systemy magazynowania zbóż jako kluczowe ogniwa logistycznych łańcuchów dostaw w przemyśle zbożowym. Nowoczesne, wydajne, jak również zrównoważone łańcuchy logistyczne mają ogromne znaczenie gospodarcze w magazynowaniu przemysłowym. W artykule przedstawiono nowe zrównoważone rozwiązania dotyczące procesu planowania oraz kontroli działań, mających na celu magazynowanie zbóż. Opisane innowacyjne rozwiązanie przyczynia się przede wszystkim do zapewnienia ciągłości funkcjonowania magazynu w sytuacjach awaryjnych oraz pozwala minimalizować kolejki przy skupie zbóż. Ponadto rozwiązanie to wskazuje na niską energochłonność, niskie koszty eksploatacyjne, wysoką wydajność, proekologiczność oraz odporność na awarie. Celem opracowania jest analiza i ocena procesu planowania oraz kontroli działań mających na celu magazynowanie zbóż i opłacalny ekonomicznie przepływ zbóż. Autorki dokonały analizy bieżącej sytuacji w przemyśle zbożowym oraz zaproponowały nową możliwość suszenia zbóż w postaci autorskiej metody alternatywnej, pozwalającej na usprawnienie logistyki przy skupach zbóż oraz zapewniającej ciągłość funkcjonowania magazynu w sytuacjach awaryjnych.

EN

In every business process of enterprises, there are technological processes, and the warehouse and related activities are an inherent attribute of the logistics process. Logistics chain management is a multidimensional activity involving information and decision-making processes and processes using the knowledge of appropriate instruments of direction and control at the strategic and operational levels. Appropriate approach to the analysis of logistics management in solving problems involving storage management in enterprises requires recognition of the importance of problems and identification of their causes. The subject of analysis and evaluation in this study are grain storage systems as key links of logistic supply chains in the grain industry. Modern, efficient as well as sustainable logistics chains are of great economic importance in industrial storage. The paper presents a new sustainable solution for the planning process and control of grain storage activities. The described innovative solution contributes primarily to the continuity of warehouse operation in emergency situations and minimizes queues at the purchase of cereals. Moreover, this solution indicates low energy consumption, low operating costs, high efficiency, pro-environmental character and resistance to failures. The aim of this paper is to analyze and evaluate the process of planning and controlling activities for grain storage and economically viable grain flow. The authors analyzed the current situation in the grain industry and proposed organizational improvements in the form of the author's alternative method, which minimizes the queues at grain purchases and ensures continuity of storage operation in emergency situations.

16

A Soft Interval Based Decision Making Method and Its Computer Application

Yaylalı Gözde, Polat Nazan Çakmak, Tanay Bekir

Foundations of Computing and Decision Sciences

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2021

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Vol. 46, No. 3

273--296

EN

In today’s society, decision making is becoming more important and complicated with increasing and complex data. Decision making by using soft set theory, herein, we firstly report the comparison of soft intervals (SI) as the generalization of interval soft sets (ISS). The results showed that SIs are more effective and more general than the ISSs, for solving decision making problems due to allowing the ranking of parameters. Tabular form of SIs were used to construct a mathematical algorithm to make a decision for problems that involves uncertainties. Since these kinds of problems have huge data, constructing new and effective methods solving these problems and transforming them into the machine learning methods is very important. An important advance of our presented method is being a more general method than the Decision-Making methods based on special situations of soft set theory. The presented method in this study can be used for all of them, while the others can only work in special cases. The structures obtained from the results of soft intervals were subjected to test with examples. The designed algorithm was written in recently used functional programing language C# and applied to the problems that have been published in earlier studies. This is a pioneering study, where this type of mathematical algorithm was converted into a code and applied successfully.

17

Development of a Competency Assessment Model for Measurement of the Human Inspection Skill

Ramzan Muhammad Babar, Kang Yuncheol, Iqbal Muhammad Waqas

Fibres & Textiles in Eastern Europe

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2021

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Vol. 29, no. 2 (146)

10--19

EN

Extensive research has already been done on visual inspection as well as on the effect of different factors on human inspection performance. However, a method should be developed to measure their inspection skill based on influencing factors. This study contributes to the literature by proposing a competency assessment model based on the influencing factors that can classify human labour into its respective skill levels. From the literature review, the influencing factors of visual inspection are listed and divided into five observed variables. A team of experts selected the significant factors with respect to the textile and clothing industry. The analytical hierarchy process is used to measure their respective weights so as to calculate the inspection performance in terms of a competency score. A numerical example is presented and the model proposed successfully determined the competency score, and inspectors are classified into their respective skill levels according to the well-defined cut-off values. This study enables organisations to classify available human labour into its skill levels and utilise them according to their capacity.

PL

Dotychczas przeprowadzono szeroko zakrojone badania dotyczące inspekcji wizualnej, a także wpływu różnych czynników na wyniki inspekcji wykonywanej przez człowieka. W pracy skupiono się na opracowaniu metody pomiaru umiejętności inspekcji w oparciu o czynniki na nie wpływające. Praca wnosi wkład do literatury, proponując model oceny kompetencji oparty na czynnikach wpływających, które mogą sklasyfikować ludzką pracę według odpowiednich poziomów umiejętności. Na podstawie przeglądu literatury wyszczególniono czynniki wpływające na kontrolę wzrokową i podzielono je na pięć obserwowanych zmiennych. Zespół ekspertów wybrał istotne czynniki w branży tekstylno-odzieżowej. Proces hierarchii analitycznej posłużył do pomiaru ich odpowiednich wag, w celu obliczenia wyników inspekcji w kategoriach oceny kompetencji. Przedstawiono przykład liczbowy, a zaproponowany model z powodzeniem określił punktację kompetencji, tak aby inspektorzy mogli być klasyfikowani według ich odpowiednich poziomów umiejętności zgodnie z dobrze określonymi wartościami granicznymi. Badanie umożliwiło organizacjom klasyfikowanie dostępnej siły roboczej według poziomów umiejętności i wykorzystywanie jej zgodnie z ich możliwościami.

18

Towards Objectification of Multi-Criteria Assessments: a Comparative Study on MCDA Methods

Bączkiewicz Aleksandra, Wątróbski Jarosław, Kizielewicz Bartłomiej, Sałabun Wojciech

Annals of Computer Science and Information Systems

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2021

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Vol. 25

417--425

EN

Objective evaluation in problems considering many, often conflicting criteria is challenging for the decision-maker. This paper presents an approach based on MCDA methods to objectify evaluations in the camera selection problem. The proposed approach includes three MCDA methods, TOPSIS, VIKOR, COMET, and two criterion weighting techniques. Two ranking similarity coefficients were used to compare the resulting rankings of the alternatives: WS and rw. The performed research confirmed the importance of the appropriate selection of multi-criteria decision-making methods for the solved problem and the relevance of comparative analysis in method selection and construction of objective rankings of alternatives.

19

Investigating the effect of social capital sub-dimensions on supply chain collaboration

Khoa Vu Dinh, Anh Nguyen Thi Mai

Annals of Computer Science and Information Systems

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2021

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Vol. 28

201--206

EN

The aim of our study is to take a closer look at three dimensions of social capital (SO) and explore the relationship between social capital sub-dimensions and three types of supply chain collaboration. This study provides an in-depth examination of social capital's effect on supply chain collaboration. We developed a comprehensive framework between cognitive, structural and relational capital dimensions and SC collaboration dimensions including information sharing, joint decision making, and benefit/risks sharing. The quantitative method was employed to investigate 249 firms located in Vietnam. The findings of this study provide some important implications for scholars and practitioners to establish and maintain a long-term relationship. The distinguishing between social capital sub-dimensions and collaboration can help managers to design collaborative strategies which will serve for the benefits of the entire supply chain.

20

Interval-Valued Intuitionistic Fuzzy Decision-Making Method using Index Matrices and Application in Outsourcing

Traneva Velichka, Tranev Stoyan, Mavrov Deyan

Annals of Computer Science and Information Systems

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2021

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Vol. 25

251--254

EN

Selecting a suitable outsourcing service provider is a challenging problem that requires discussion among a group of experts. The problems of this type belongs to the area of multicriteria decision-making. Interval-valued intuitionistic fuzzy sets, which are an extension of intuitionistic fuzzy sets, are a capable tool in modeling uncertain problems. In this paper we will formulate an optimal interval-valued intuitionistic fuzzy multicriteria decision-making problem in outsourcing and propose a new approach for the selection of the most appropriate candidates; as well as a software program for its automated solution, based on our previous libraries. As an example of a case study, an application of the algorithm on real data from a refinery is demonstrated.