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    Wyświetlanie 1-11 z 11
    Tytuł:
    A model for optimizing enterprise’s inventory costs : a fuzzy approach
    Autorzy:
    Kosiński, W
    Muniak, R.
    Kosiński, W. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/406354.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    economic order quantity
    optimization problem
    ordered fuzzy numbers
    Opis:
    Applicability of a fuzzy approach to a problem originating from administrative accounting, namely to determine an economic order quantity (EOQ) in a variable competitive environment with imprecise and vague data, has been presented. For this purpose, the model of ordered fuzzy numbers developed by the first author and his two co-workers is used. The present approach generalizes the one developed within the framework of convex fuzzy numbers and stays outside the probabilistic one.
    Źródło:
    Operations Research and Decisions; 2013, 23, 4; 39-54
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizing of a Company’s Cost under Fuzzy Data and Optimal Orders Under Dynamic Conditions
    Autorzy:
    Sobol, Irena
    Kacprzak, Dariusz
    Kosiński, Witold
    Powiązania:
    https://bibliotekanauki.pl/articles/429885.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
    Tematy:
    Ordered Fuzzy Numbers
    defuzzification
    Economic Order Quantity Model
    optimal order quantity
    Opis:
    The purpose of this article is to suggest tools of inventory management which would determine economically optimal order quantities. One of them is based on the so-called fixed order quantity model which takes into account several elements of inventory cost, such as ordering cost, transportation and storing cost, frozen capital cost, as well as extra discounts. The tool is based on fuzzy concepts represented by Ordered Fuzzy Numbers. The second tool takes into account the dynamics and works on the basis of replenishment system. This tool can be treated as a kind of controller. Examples of using this tools are presented.
    Źródło:
    Optimum. Economic Studies; 2014, 5(71)
    1506-7637
    Pojawia się w:
    Optimum. Economic Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The implementation of economic order quantity for reducing inventory cost: a case study in automotive industry
    Autorzy:
    Riza, M.
    Purba, H. H.
    Mukhlisin, -
    Powiązania:
    https://bibliotekanauki.pl/articles/1833817.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    inventory management
    economic order quantity
    inventory turnover ratio words
    Opis:
    The EOQ model is one of the oldest classic production scheduling models. The EOQ mathematical models have been established within the scope of operations management to determine the optimal inventory level. The most widely used model is the EOQ model. This journal research uses descriptive research design. A survey was conducted on automotive components of a Japanese company in Indonesia. The company is one of the fastest growing industrial company among automotive component companies. The main products are copper materials used by the automotive industry for lamps, switches, electrical panel components two-wheeled vehicles and four-wheeled vehicles. The Japanese company seeks to meet increasing customer demand but on the other hand strive to obtain optimal inventory costs, as well as demand by parent companies in Japan for faster money turnover or otherwise known as Inventory Turnover Ratio (ITR) and must be in quantity minimum or small. This means the goods in the order must be as required.
    Źródło:
    Research in Logistics & Production; 2018, 8, 4; 289-301
    2083-4942
    2083-4950
    Pojawia się w:
    Research in Logistics & Production
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Case study about economic order quantities and comparison of results from conventional EOQ model and response surface-based approach
    Autorzy:
    Yıldız, R.
    Yaman, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/406756.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    economic order quantity
    Pareto analysis
    response surface
    demand forecasting
    Opis:
    This study involves the implementation of an economic order quantity (EOQ) model which is an inventory control method in a ceramic factory. Two different methods were applied for the calculation of EOQs. The first method is to determine EOQ values using a response surface method-based approach (RSM). The second method uses conventional EOQ calculations. To produce a ceramic product, 281 different and additive materials may be used. First, Pareto (ABC) analysis was performed to determine which of the materials have higher priority. Because of this analysis, the value of 21 items among 281 different materials and additives were compared to the ratio of the total product. The ratio was found to be 70.4% so calculations were made for 21 items. Usage value for every single item for the years 2011, 2012, 2013 and 2014, respectively, were obtained from the company records. Eight different demand forecasting methods were applied to find the amount of the demand in EOQ. As a result of forecasting, the EOQ of the items were calculated by establishing a model. Also, EOQ and RSM calculations for the items were made and both calculation results were compared to each other. Considering the obtained results, it is understood that RSM can be used in EOQ calculations rather than the conventional EOQ model. Also, there are big differences between the EOQ values which were implemented by the company and the values calculated. Because of this work, the RSM-based EOQ approach can be used to decide on the EOQ calculations as a way of improving the system performance.
    Źródło:
    Management and Production Engineering Review; 2018, 9, 3; 23-32
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The implementation of economic order quantity for reducing inventory cost
    Autorzy:
    Riza, M.
    Purba, H. H.
    Mukhlisin, -
    Powiązania:
    https://bibliotekanauki.pl/articles/1833813.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    inventory management
    economic order quantity
    inventory turnover ratio words
    Opis:
    Inventory management is focused with ensuring that all activities involved in labor storage and stock control are carried out efficiently and economically by those working in inventory storage. Then, there is a question for management regarding the efficiency of inventory management procedures because of inconsistencies in inventory levels that cause weaknesses such as losses incurred due to end-inventory stocks, low stock inventories, failure to meet targets and poor corporate morale. As a result, the inventory storage of the company is too busy making the job a difficult supply keeper, late in issuing materials to the department and in turn producing poor inventory service delivery. In inventory management, Economic Order Quantity (EOQ) is the number of orders that minimize total holding costs and booking costs. The EOQ model is one of the oldest classic production scheduling models. The EOQ mathematical models have been established within the scope of operations management to determine the optimal inventory level. The most widely used model is the EOQ model.
    Źródło:
    Research in Logistics & Production; 2018, 8, 3; 207-216
    2083-4942
    2083-4950
    Pojawia się w:
    Research in Logistics & Production
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparing Probabilistic Economic Order Quantity and Periodic Order Quantity Model Performance Under Lumpy Demand Environment
    Autorzy:
    Nurprihatin, Filscha
    Rembulan, Glisina Dwinoor
    Pratama, Yohanes Dwi
    Powiązania:
    https://bibliotekanauki.pl/articles/2201156.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lumpy demand
    material requirements planning
    probabilistic economic order quantity
    periodic order quantity
    aggregate plan
    Opis:
    Improper planning of inventory will affect the factory operating costs, building costs, the cost of loss, and the cost of product defects due to being stored for too long which will eventually become a loss. This research discusses the processing industry which is experiencing lumpy demand. In carrying out the production process, the company has never made plans for future demand, resulting in a waste of message costs due to repeated orders of raw materials ordered to suppliers. This paper contributes to overcoming this issue by simulating future demand by using the Material Requirement Planning (MRP) method with a probabilistic Economic Order Quantity (EOQ) and Periodic Order Quantity (POQ) model. The demand in the coming period is determined using the Autoregressive Integrated Moving Average (ARIMA) method, and an aggregate plan is carried out to determine the regular cost of raw material production and optimal subcontracting. The final analysis states that the calculation of MRP on the selected items using POQ produces the lowest cost for planning S45C-F, SGT-R, and SKD11-R, while SLD-R uses the probabilistic EOQ method.
    Źródło:
    Management and Production Engineering Review; 2022, 13, 4; 16--25
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of EOQ in terms of optimum degrees of horizontal and vertical cooperation at a node of supply chain
    Autorzy:
    Mishra, Prem Prakash
    Zimik, Chipem
    Borkotokey, Surajit
    Powiązania:
    https://bibliotekanauki.pl/articles/2175829.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    horizontal cooperation
    vertical cooperation
    carrying cost
    ordering cost
    economic order quantity
    EOQ
    Opis:
    In a complex supply chain network, the production nodes, seller nodes, and buyers are connected randomly. We assume a process of joining two random nodes leading to the bivariate Poisson probability mass function. There exist two types of links - one is horizontal (H) and the other is vertical (V), which support the continuous flow of commodities through the supply chain. This induces competition among workers at a node to manage these two types of links within fixed constraints and creates bargaining to decide the optimal degree of both types of links at a node. We use the Nash security point to obtain the bargaining solution describing the optimal links. We reduce the carrying cost and ordering cost of inventory, which are contrary in their nature by introducing horizontal and vertical links, respectively. We modify the total cost function and establish a new economic order quantity (EOQ), optimal shortage quantity, and total optimal cost in terms of the optimal degree of H and V cooperation.
    Źródło:
    Operations Research and Decisions; 2022, 32, 2; 89--104
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inventory management practices and financial performance of large manufacturing firms in Kenya (a case study of bata shoe Kenya PLC)
    Autorzy:
    Mudimba, Michael Antony
    Nyawira, Jacinta Muthee
    Powiązania:
    https://bibliotekanauki.pl/articles/1375445.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowy Instytut Innowacji Nauka – Edukacja – Rozwój w Warszawie
    Tematy:
    Inventory Management
    Just-In-Time
    ABC Analysis
    Economic Order Quantity
    Vendor Managed Inventory
    Organizational Productivity
    Opis:
    The study was purposed to determine the effect of Inventory management practices and financial performance in large manufacturing firms in Kenya. The research was conducted with the following four aims: To examine the degree at which inventory management systems influence financial performance; to establish the degree at which inventory planning influences financial performance in large manufacturing firms and to assess the degree at which inventory modeling influences financial performance in large manufacturing firms. Also, the research was directed by Economic Order Quantity, Collaborative Planning, Forecasting and Replenishment Model, Deming Cycle Model, transaction of cost economics (TCE). The findings of the study show that all firms need to adopt inventory management practices so as to enjoy the advantages. Thus, the existence of inventory management practices is one of the ways for attaining improvements in their financial performance. Inventory Management, Just-In-Time, ABC Analysis, Economic Order Quantity, Vendor Managed Inventory, Organizational Productivity
    Badanie przedstawione w niniejszym artykule miało na celu określenie wpływu praktyk zarządzania zapasami i wyników finansowych w dużych firmach produkcyjnych w Kenii. Badanie przeprowadzono w następujących czterech celach: zbadanie, w jakim stopniu systemy zarządzania zapasami wpływają na wyniki finansowe; określenie stopnia, w jakim planowanie zapasów wpływa na wyniki finansowe dużych firm produkcyjnych oraz ocena stopnia, w jakim modelowanie zapasów wpływa na wyniki finansowe dużych firm produkcyjnych. Ponadto badaniami kierowały: wielkość zamówienia gospodarczego, planowanie współpracy, model prognozowania i uzupełniania, model cyklu Deminga, transakcja ekonomiki kosztów (TCE). Wyniki badania pokazują, że wszystkie firmy muszą stosować praktyki zarządzania zapasami, aby czerpać korzyści, istnienie praktyk zarządzania zapasami jest jednym ze sposobów osiągnięcia poprawy ich wyników finansowych. zarządzanie zapasami, just-in-time, analiza ABC, ilość zamówień ekonomicznych, zapasy zarządzane przez dostawcę, wydajność organizacyjna
    Źródło:
    International Journal of New Economics and Social Sciences; 2019, 10(2); 309-328
    2450-2146
    2451-1064
    Pojawia się w:
    International Journal of New Economics and Social Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of a single sampling plan minimizing the sum of risks in an EOQ model with trade credit
    Autorzy:
    Veerakumari, Pradeepa
    Harikrishnan, Aruna
    Powiązania:
    https://bibliotekanauki.pl/articles/406609.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    trade credit
    economic order quantity
    EOQ
    minimum sum of risks
    Poisson distribution
    kredyt handlowy
    rozkład Poissona
    Opis:
    Acceptance sampling by attributes is a universally used statistical tool for quality control. It is a technique that deals with the decision to accept or reject a batch of goods using defined procedures. An attribute single sampling plan designed under the assumption that the number of defects has a Poisson distribution is the optimal plan whenever the chance of a defect occurring in the manufacturing process is low. This study introduces the incorporation of an attribute single sampling plan minimizing the sum of risks with an economic order quantity (EOQ) model taking into account the possibility of trade credit. The plan ensures the effectiveness of the optimal design based on the minimization of costs including the inspection costs, stock holding costs and ordering costs.
    Źródło:
    Operations Research and Decisions; 2019, 29, 1; 121-130
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation as a way of optimizing a delivery size: Impact on the profitability of an enterprise
    Autorzy:
    Milewski, Dariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/135390.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    economic efficiency of logistics processes
    economic order quantity
    optimization of logistics processes
    decision-making
    modelling of logistics processes
    simulation
    Opis:
    The paper examines the classical problem of optimization of the size of a delivery to a warehouse. Using a model developed by the author, simulations were conducted using data obtained from companies in Poland. The results revealed that the impact of this optimization on the economic efficiency of an enterprise can be considerable in some cases. It is difficult, however, to develop an appropriate mathematical formula for solving such a problem. The use of a simulation seems to be more appropriate for solving this problem than optimization models.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 59 (131); 92-99
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inventory management strategies of food manufacturing industries in a developing economy
    Strategia zarządzania zapasami w przemyśle spożywczym w krajach rozwijających się
    Autorzy:
    Opoku, Richard Kofi
    Abboah, Clifford Kevin Benedict
    Owusu, Rullmann Twi
    Powiązania:
    https://bibliotekanauki.pl/articles/1835532.pdf
    Data publikacji:
    2021
    Wydawca:
    Wyższa Szkoła Logistyki
    Tematy:
    inventory management strategies
    just-in-time
    economic order quantity
    strategic supplier partnership
    vendor managed inventory
    activity based costing
    strategie zarządzania zapasami
    ekonomiczna wielkość zamówienia
    dostawca strategiczny
    zarządzanie zapasem kupującego
    kalkulacja kosztów
    Opis:
    Among the various food chain processes, inventory is regarded as the most important, complex and expensive. Inventory practically accounts for over 70% of food processing firms overall capital assets in both developed and developing economies. As such, its proper management is key to promoting the performance, growth and competitiveness of food processing firms and their supply chains. However, in developing economies notably Ghana, the strategies adopted by food processing firms in managing their inventories remains scanty and unclear. Thus, the aim of this article is to investigate the different inventory management strategies of manufacturing industries with focus on food processing firms in a developing economy in case of Ghana. Methods: The study adopted the quantitative approach, descriptive design, and backed by the theory of constraints. It collects data through structured questionnaires from 104 food processing firms in Ghana and analysis was done using descriptive statistics (i.e. mean and standard deviation). Results: The study’s results revealed that food processing firms in developing economies notably Ghana most prefer the Economic Order Quantity during inventory management; followed by Strategic Supplier Partnership and the Activity Based Costing strategies respectively. Conclusions: This study’s findings contribute largely to empirical studies on inventory management of food processing firms in developing economies. The findings also inform policies and practices associated with inventory management, while facilitating the adoption of relevant inventory management strategies in food processing industries.
    Wśród wielu różnych procesów zachodzących w łańcuchach dostaw produktów żywnościowych, zarządzanie zapasami uznaje się za jednej z najważniejszych i najbardziej złożonych procesów. Zapasy pochłaniają ponad 70% zasobów w firmach spożywczych zarówno w krajach rozwijających się jak i rozwiniętych. W związku z tym właściwe zarządzanie tymi zapasami jest kluczowe dla zwiększenie konkurencyjności i polepszenia wyników finansowych firmy. Jednak w wielu rozwijających się krajach, między innymi w Ghanie, strategie zarządzania, stosowane przez firmy spożywcze dla zarządzania zapasami, pozostają niejasne i nieprecyzyjne. Celem tej pracy jest analiza różnych strategii zarządzania zapasami, z głównym naciskiem na firmy spożywcze, dla rozwijającej się gospodarki, na przykładzie Ghany. Metody: Zastosowano podejście ilościowe jak i schemat opisowy, oparty na teorii ograniczeń. Dane do badań zebrano przy użyciu ustrukturyzowanej ankiety od 104 firm spożywczych, działających w Ghanie. Analiza danych została wykonana przy użyciu narzędzi statystycznych (m.in. wyliczając średnią i odchylenie). Wyniki: W wyniku przeprowadzonej analizy, stwierdzono, że w krajach rozwijających się, na przykładzie Ghany, w większości przypadków preferowaną metodą postępowania w zarządzaniu zapasami jest metoda ekonomicznej wielkości zamówienia. Kolejnymi metodami, preferowanymi przez ankietowanych jest oparcie się o strategicznego dostawcę oraz strategia oparta o kalkulację kosztów. Wnioski: Wyniki uzyskane w czasie tej pracy określają empiryczne podejście w zarządzaniu zapasami w firmach spożywczych w krajach rozwijających się oraz prezentują politykę i praktycznie stosowane strategie zarządzania zapasami w tych firmach.
    Źródło:
    LogForum; 2021, 17, 1; 37-48
    1734-459X
    Pojawia się w:
    LogForum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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