Analysis of optimal costs for reserves of spare parts for agricultural machines
| Autor: | Rade Žugić, Marjan Mirčevski, Ivan Milojević, Radovan Damnjanović, Milan Milunović, Slobodan Stanojević, Milan Mihajlović, Miloš Miljković |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
021103 operations research
Agricultural machinery Stochastic modelling business.industry 0211 other engineering and technologies lcsh:S 04 agricultural and veterinary sciences 02 engineering and technology General Medicine lcsh:Agriculture Inventory level Procurement Agriculture Spare part stochastic model of supplies agricultural machinery 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Operations management Business Agricultural productivity spare parts farm |
| Zdroj: | Ekonomika Poljoprivrede (1979), Vol 65, Iss 1, Pp 81-92 (2018) |
| ISSN: | 2334-8453 0352-3462 |
| Popis: | Managing reserves of spare parts for agricultural machinery in agricultural farms represents one of the most important activities in securing smooth functioning, especially having in mind the imperative of continuous agricultural production. Aims of this study were to show how efficiency of the agricultural farms as a business subject can be secured by determining timely purchase of spare parts by using a stochastic model of supplies on one side and reduce the time of malfunction of agricultural machinery on the other. Study of optimal inventory level was conducted in agricultural holdings on the territory Banat in 2015 based on data on spare parts purchase and malfunction of agricultural machinery. Acquired data was related to frequency of defects and the need for spare parts, as well as the price of spare parts, where the data was processed with the use of stochastic model of supplies. The optimal number of spare parts for the observed equipment in the observed period was y*=4 with the probability of 85% that this amount of spare parts will be sufficient for all malfunctions on the equipment to be eliminated, while taking a 15% risk that one or two spare parts will be acquired with emergency procurements in case of extraordinary circumstances. The model of managing supplies represented in such a way provides an opportunity to be easily applied in agricultural farms, where the values of an optimal solution would be effectively got with previously chosen values of suitable parameters, thus minimizing total expected costs, which would include fixed costs, expenses caused by unsatisfied requests, where the time of waiting for the observed equipment to be fixed would be taken into account. |
| Databáze: | OpenAIRE |
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