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Wyszukujesz frazę "order quantity" wg kryterium: Temat


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:
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:
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:
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:
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:
Optimization of Channel Profit for Deteriorating Items when Trade Credit Linked to Order Quantity
Autorzy:
Sanas, Yogita
Kawale, Sunil
Lahji, Abdul Aziz
Powiązania:
https://bibliotekanauki.pl/articles/1177859.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Deterioration
Integrated Inventory Model
Order Quantity Dependent Trade Credit
Time Dependent Demand
Opis:
In this article, an attempt is made to optimize the joint total profit per unit time of vendor – buyer supply chain system where vendor offers different trade credit depends on order quantity to the buyer. Here items in the inventory are deteriorates with constant rate and demand is a linear function of time. Vendor is establishing threshold for allowing trade credit comprehensively to ensure the greatest benefit for both players. By analyzing total channel profit function, we developed the optimal solution to provide buyer’s order quantity and replenishment time. Numerical examples and sensitivity analysis are given to illustrate the theoretical results, and some managerial insights are also obtained.
Źródło:
World Scientific News; 2018, 98; 100-114
2392-2192
Pojawia się w:
World Scientific News
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:
An EOQ model with time dependent deterioration under discounted cash flow approach when supplier credits are linked to order quantity
Autorzy:
Shah, B. J.
Shah, N. H.
Shah, Y. K.
Powiązania:
https://bibliotekanauki.pl/articles/970398.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
time dependent deterioration
discounted cashflows (DCF) approach
supplier credit linked to order quantity
Opis:
This article deals with an inventory model under a situation in which the supplier offers the purchaser some credit period if the purchaser orders a large quantity. Shortages are not allowed. The effects of the inflation rate on purchase price, ordering price and inventory holding price, time dependent deterioration of units and permissible delay in payment are discussed. A mathematical model is developed when units in inventory are subject to time dependent deterioration under inflation when the supplier offers a permissible delay to the purchaser if the order quantity is greater than or equal to a pre-specified quantity. Optimal solution is obtained and algorithm is given to find the optimal order quantity and replenishment time, which minimizes the total cost of an inventory system in different scenarios. The paper concludes with a numerical example to illustrate the theoretical results and interdependence of parameters is studied for the optimal solutions.
Źródło:
Control and Cybernetics; 2007, 36, 2; 405-423
0324-8569
Pojawia się w:
Control and Cybernetics
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:
Context of the inventory management expenses in the case of planned shortages
Autorzy:
Korponai, J.
Tóth, Á. B.
Illés, B.
Powiązania:
https://bibliotekanauki.pl/articles/125556.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
cost factor
optimum
order quantity
purchasing
shortage
stock holding
czynnik kosztowy
optymalność
zamówienie
zakupy
niedobór
zaopatrzenie gospodarstwa
Opis:
The main purpose of the paper is to present the relations between the different cost factors of the inventory management systems, and the context between the order quantities and the cost level. The theoretical approach of the model assumes a deterministic operational environment with planned shortages. We make the examination of the contexts by applying the ceteris paribus principle; we change only one cost factor from among the initial conditions at once and examine its effect on the cost level. By using the economic order quantity with the planned shortage model, we can define the optimal order quantity, along which our stock management can be guaranteed by the most favourable cost level. The optimisation of the inventory level and the inventory management expenses together means an important factor in the competitiveness of the company. During the definition of the optimal inventory level of purchased parts, the purchasing and stock holding costs, and also the consequence of shortages play an important role. The presentation of the specific expense factors in each other’s function, and the representation of the onetime order expenses show their proportion compared to each other and the effect of their change on the total cost, and define the opportunities of the optimisation. The significance of the model is that it represents the level line of costs, the movement of the different cost factors in relation to others and their operating mechanism. Thus, it facilitates the representation of costs and the definition of the direction of optimisation.
Źródło:
Engineering Management in Production and Services; 2017, 9, 1; 26-35
2543-6597
2543-912X
Pojawia się w:
Engineering Management in Production and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielokryterialny model wielkości zamówienia w kopalni węgla kamiennego
Multi-criteria model of largeness of material orders in carbon mine
Autorzy:
Jakowska-Suwalska, K.
Sojda, A.
Wolny, M.
Powiązania:
https://bibliotekanauki.pl/articles/324078.pdf
Data publikacji:
2012
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
wielkość zamówienia
model wielokryterialny
kopalnia węgla kamiennego
gospodarka materiałowa
order quantity
multicriteria model
hard coal mine
materials management
Opis:
W pracy przedstawiono wielokryterialny model wielkości Zamówienia, przy założeniu że wielkość zużycia materiału jest zmienną losową o znanym rozkładzie prawdopodobieństwa. W modelu przyjęto dwa kryteria: minimalizacji wielkości zamówienia oraz minimalizacji prawdopodobieństwa braku materiahi w procesie produkcyjnym. Rozważono dwa sposoby skalaryzacji i na przykładzie pokazano zastosowanie zbudowanych modeli dla wyznaczenia wielkości zamówienia kleju poliuretanowego, zużywanego do uszczelniania wyrobisk w kopalni.
The paper presents multi-criteria model of largeness of order providing that need is random variable with continuous probability distribution, rn model two criteria are assumed, minimization of largeness of order and in minimization of probability of lack of material in productive process. Two scalarization methods and shown in example employment of models for assignment of largeness of order of polyurethane adhesive in carbon mine are considered.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2012, 61; 111-125
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Replenishment policy for entropic order quantity (ENOQ) model with two component demand and partial back-logging under inflation
Metoda uzupełnień dla modelu entropicznej wielkości zamówienia (ENOQ) z dwuelementowym popytem i uwzględniający inflację
Autorzy:
Dash, B.
Pattnaik, M.
Pattnaik, H.
Powiązania:
https://bibliotekanauki.pl/articles/362217.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
Entropic Order Quantity
EnOQ
two component demand
partial back-logging
inflation
entropiczna wielkość zamówienia
popyt dwuskładnikowy
zużycie częściowe
inflacja
Opis:
Background: Replenishment policy for entropic order quantity model with two component demand and partial backlogging under inflation is an important subject in the stock management. Methods: In this paper an inventory model for non-instantaneous deteriorating items with stock dependant consumption rate and partial back logged in addition the effect of inflection and time value of money on replacement policy with zero lead time consider was developed. Profit maximization model is formulated by considering the effects of partial backlogging under inflation with cash discounts. Further numerical example presented to evaluate the relative performance between the entropic order quantity and EOQ models separately. Numerical example is present to demonstrate the developed model and to illustrate the procedure. Lingo 13.0 version software used to derive optimal order quantity and total cost of inventory. Finally sensitivity analysis of the optimal solution with respect to different parameters of the system carried out. Results and conclusions: The obtained inventory model is very useful in retail business. This model can extend to total backorder.
Wstęp: Metoda uzupełnień dla modelu entropicznej wielkości zamówienia (ENOQ) z dwuelementowym popytem i uwzględniający inflację jest istotnym zagadnieniem w obrębie zarządzania zapasem. Metody: W pracy stworzono model zarządzania zapasem dla pozycji o nierównomiernym zużyciu oraz uwzględniający czynnik inflacyjny w ujęciu wartościowym dla zamówień z zerowym czasem realizacji. Sformułowano model maksymalizacji zysku przy uwzględnieniu inflacji oraz systemu rabatów gotówkowych. Zaprezentowano przykład numeryczny dla porównania efektów uzyskiwanych przy zastosowaniu modelu entropicznej wielkości zamówienia oraz ekonomicznej wielkości zamówienia. Na przykładzie został zaprezentowany stworzony model oraz została zilustrowana procedura. Oprogramowanie Lingo 13.0 zostało wykorzystane do wyprowadzenia optymalnej wielkości zamówienia oraz całkowitego kosztu zapasu. Następnie przeprowadzono analizę wrażliwości optymalnego rozwiązania dla różnych parametrów. Wyniki i wnioski: Otrzymany model zapasu jest bardzo przydatny w przedsiębiorstwie handlu detalicznego. Może on został użyty również w szerszym zakresie.
Źródło:
LogForum; 2017, 13, 3; 353-365
1734-459X
Pojawia się w:
LogForum
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

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