Temat: economic order quantity

Skocz do pozycji: 1.

Tytuł:: Optimizing of a Company’s Cost under Fuzzy Data and Optimal Orders Under Dynamic Conditions
Autorzy:: Sobol, Irena
Kacprzak, Dariusz
Kosiński, Witold
Tematy:: Ordered Fuzzy Numbers
defuzzification
Economic Order Quantity Model
optimal order quantity; Pokaż więcej
Wydawca:: Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Powiązania:: https://bibliotekanauki.pl/articles/429885.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A model for optimizing enterprise’s inventory costs : a fuzzy approach
Autorzy:: Kosiński, W
Muniak, R.
Kosiński, W. K.
Tematy:: economic order quantity
optimization problem
ordered fuzzy numbers; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/406354.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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.
Tematy:: economic order quantity
Pareto analysis
response surface
demand forecasting; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/406756.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The implementation of economic order quantity for reducing inventory cost
Autorzy:: Riza, M.
Purba, H. H.
Mukhlisin, -
Tematy:: inventory management
economic order quantity
inventory turnover ratio words; Pokaż więcej
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Powiązania:: https://bibliotekanauki.pl/articles/1833813.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The implementation of economic order quantity for reducing inventory cost: a case study in automotive industry
Autorzy:: Riza, M.
Purba, H. H.
Mukhlisin, -
Tematy:: inventory management
economic order quantity
inventory turnover ratio words; Pokaż więcej
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Powiązania:: https://bibliotekanauki.pl/articles/1833817.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

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
Tematy:: lumpy demand
material requirements planning
probabilistic economic order quantity
periodic order quantity
aggregate plan; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2201156.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

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
Tematy:: horizontal cooperation
vertical cooperation
carrying cost
ordering cost
economic order quantity
EOQ; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/2175829.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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
Tematy:: Inventory Management
Just-In-Time
ABC Analysis
Economic Order Quantity
Vendor Managed Inventory
Organizational Productivity; Pokaż więcej
Wydawca:: Międzynarodowy Instytut Innowacji Nauka – Edukacja – Rozwój w Warszawie
Powiązania:: https://bibliotekanauki.pl/articles/1375445.pdf Link otwiera się w nowym oknie
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
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Application of a single sampling plan minimizing the sum of risks in an EOQ model with trade credit
Autorzy:: Veerakumari, Pradeepa
Harikrishnan, Aruna
Tematy:: trade credit
economic order quantity
EOQ
minimum sum of risks
Poisson distribution
kredyt handlowy
rozkład Poissona; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/406609.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Simulation as a way of optimizing a delivery size: Impact on the profitability of an enterprise
Autorzy:: Milewski, Dariusz
Tematy:: economic efficiency of logistics processes
economic order quantity
optimization of logistics processes
decision-making
modelling of logistics processes
simulation; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135390.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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