- citati u SCIndeksu: 0
- citati u CrossRef-u:0
- citati u Google Scholaru:[
 ]
- posete u poslednjih 30 dana:7
- preuzimanja u poslednjih 30 dana:7
|
|
|
2018, vol. 65, br. 1, str. 81-92
|
|
Analiza optimalnosti troškova zaliha rezervnih delova poljoprivrednih mašina
Analysis of optimal costs for reserves of spare parts for agricultural machines
aVojnomedicinska akademija, Beograd bUniverzitet odbrane, Vojna akademija, Beograd cMinistry of Defense, Budget Department, Belgrade dGeneral Staff of the Serbian Armed Forces, Belgrade eUniverzitet u Kragujevcu, Ekonomski fakultet fModern Bussines School, Belgrade
e-adresa: marjan.mircevski@gmail.com, milan.mih83@gmail.com, radovandam78@gmail.com
Sažetak
Upravljanje zalihama rezervnih delova poljoprivrednih mašina u poljoprivrednm gazdinstvima predstavlja jednu od najvažnijih aktivnosti u obezbeđivanju nesmetanog funkcionisanja naročito imajući u vidu imperativ kontinuirane proizvodnje. Cilj ove studije bio je da se prikaže kako jednim stohastičkim modelom zaliha može da se utvrdi da pravovremenom nabavkom rezervnih delova može da se obezbedi sa jedne strane ekonomičnost poslovanja poljoprivrednog gazdinstva kao poslovnog subjekta, a sa druge strane smanji vreme neispravnosti poljoprivrednih mašina. Studija optimalnosti nivoa zaliha sprovedena je u poljoprivrednim gazdinstvima na teritoriji Banata u 2015. godini na osnovu podataka o nabavkama rezervnih delova i neispravnostima poljoprivrednih mašina. Prikupljeni podaci su se odnosili na učestalost javljanja neispravnosti i potrebe za rezervnim delovima, kao i cene rezervnih delova, pri čemu su obrađeni primenom stohastičkog modela zaliha. Rezultati: U posmatranom periodu optimalni broj rezernih delova za posmatranu opremu je iznosio u*=4 pri čemu se, sa verovatnoćom od 85%, može tvrditi da će ova količina rezervnih delova biti dovoljna da se otklone svi kvarovi na opremi, dok se preuzima rizik od 15% da će se jedan ili dva rezervna dela nabaviti hitnim nabavkama u slučaju vanrednih okolnosti. Ovako predstavljen model upravljanja zalihama pruža mogućnost da se lako primeni u poljoprivrednm gazdinstvima, gde bi se uz prethodno izabrane vrednosti odgovarajućih prametara efektivno dobile vrednosti optimalnog rešenja, tako da se minimizira ukupan očekivani trošak, koji bi obuhvatao fiksne troškove, troškove izazvane sa nezadovoljenim zahtevima i gde bi se uzelo u obzir vreme čekanja popravke posmatrane opreme.
Abstract
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.
|
|
|
|
Reference
|
|
|
Backović, M.M., Vuleta, J., Popovic, Z. (2014) Ekonomsko matematički metodi i modeli. Beograd: Ekonomski fakultet - Centar za izdavačku delatnost
|
|
 
|
Basten, R.J.I., van Houtum, G.J. (2014) System-oriented inventory models for spare parts. Surveys in Operations Research and Management Science, 19(1): 34-55
|
|
1
|
Božić, V., Aćimović, S. (2010) Marketing logistika. Beograd: Ekonomski fakultet - Centar za izdavačku delatnost
|
|
|
Brown, A.S. (2008) To what extent does medical device maintenance pose clinical risk?. Clinical Risk, 14(2): 59-62
|
|
2
|
Caffaro, F., Mirisola, A., Cavallo, E. (2017) Safety signs on agricultural machinery: Pictorials do not always successfully convey their messages to target users. Applied Ergonomics, 58: 156-166
|
|
|
Deshpande, V., Iyer, A.V., Cho, R. (2006) Efficient Supply Chain Management at the U.S. Coast Guard Using Part-Age Dependent Supply Replenishment Policies. Operations Research, 54(6): 1028-1040
|
|
|
Gauchan, D., Shrestha, S. (2017) Agricultural and rural mechanization in Nepal: Status, issues and options for future. u: Mandal M.A.S. [ur.] Rural mechanization: A driver in agricultural change and rural development, Dhaka, Bangladesh: Institute for Inclusive Finance and Development (InM), pp. 97-118
|
|
|
Gościański, M., Kośmicki, Z., Mielec, K. (2005) Chemically polluted parts of agricultural machines which were executed from plastic. Journal of Research and Applications in Agricultural Engineering, vol. 50, No. 4, pp. 32-38
|
|
|
Guillermo, R.G. (2017) Characterization of traditional production systems of sugarcane for panela and some prospects for improving their sustainability. Rev. Fac. Nal. Agr. Medellín, vol. 70; no. 1, pp. 8046-8055
|
|
|
Harrington, L. (2007) From just in case to just in time. Air Transp. World, vol. 44, No. 4, pp. 77-80
|
|
|
Karugia, J. (2017) Impact of farm mechanization on crop production and yields: Case of interventions implemented under ASDP. u: 3rd Annual Agriculture Policy Conference 1st - 3rd March, 2017, Dar es Salaam, Tanzania, pp. 170-182
|
|
|
Kranenburg, B. (2006) Spare Parts Inventory Control Under System Availability Constraints. Eindhoven: BETA Research School, PhD thesis
|
|
|
Miguel, C.A., Maria, R.R.A. (2012) Medical device maintenance outsourcing: Have operation management research and management theories forgotten the medical engineering community? A mapping review. European Journal of Operational Research, 221(1): 186-197
|
|
2
|
Milić, B. (2011) Ruralni razvoj - praktikum za lokalne aktere. Beograd: Stalna konferencija gradova i opština
|
|
13 
|
Milojević, I., Mihajlović, M., Cvijanović, M. (2012) Impact of organizational failure of relevance consolidated budget. Ekonomika poljoprivrede, vol. 59, br. 1, str. 63-71
|
|
1
|
Riveiro, J.A., Marey-Pérez, M.F., Díaz-Varela, E.R., Álvarez, C.J. (2010) A methodology for the analysis of the relationships between farms and their physical environment. Journal of Agricultural Science, vol. 48, No. 2, pp. 245-253
|
|
|
Rustenburg, W.D., van Houtum, G.J., Zijm, W.H.M. (2013) Exact and approximate analysis of multi-echelon, multi-indenture spare parts systems with commonality. u: Shanthikumar J.G., Yao D.D., Zijm W.H.M. [ur.] Stochastic Modelling and Optimization of Manufacturing Systems and Supply Chains, Kluwer Academic Publishers, 2013
|
|
|
Smith, A., Pitt, M. (2007) Facilities management quality and user satisfaction in outsourced services. School of the Built Environment, Liverpool John Moores University
|
|
4
|
Vukoje, A. (2013) Faktori egzistencije kao uslov stvaranja tržišne pozicije preduzeća. Oditor, vol. 1, no. 5, pp. 27-37
|
|
|
Walczak, M., Caban, J., Marczuk, A. (2017) Evaluation of Tribological Properties of Polymer Materials Used for Sliding Bearings in Agricultural Machinery. Agricultural Engineering, 21(1): 95-103
|
|
4
|
Zekić, M., Šegrt, S. (2015) Uticaj privatnog zdravstvenog osiguranja na makroekonomski ambijent Republike Srbije. Oditor, br. 10, str. 4-9
|
|
|
|
|