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2014, vol. 42, br. 2, str. 115-129
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Fazi modeli za merenje konkurentnosti u agroindustriji
Fuzzy models in measuring competitiveness of agroindustry
Sažetak
Konkurentnost je u protekle tri decenije sastavni deo modernog upravljanja razvojem i poslovanjem. Autori posmatraju 18 vojvođanskih preduzeća u periodu 2009-2013 iz sektora poljoprivrede i prerađivačke industrije i mere njihovu konkurentnost na osnovu angažovanosti intelektualnog kapitala. Autori dalje predlažu konstrukciju portfelja rešavanjem višekriterijumskog optimizacionog problema. Primenjena je fazi metodologija, prinosi su modelovani trapezoidnim fazi brojevima, a rizik se meri semi-devijacijom. Rezultati studije ukazuju na odstupanje u odnosu na Markowitzev model koji podrazumeva da su prinosi normalno raspoređeni, pri čemu je varijansa adekvatna mera rizika. Portfelje dobijene fazi metodologijom čine kompanije sa većim vrednostima intelektualnog kapitala u odnosu na kompanije koje su dobijene rešavanjem Markowitzevog problema.
Abstract
Over the past three decades, competitiveness has become an integral part of modern management and business development. The authors observe 18 enterprises in Vojvodina in the period 2009-2013 from Agriculture and Manufacturing sectors and measure their competitiveness based on the involvement of intellectual capital. The authors also propose the construction of a portfolio by solving the multiple criteria optimization problem. Fuzzy methodology has been applied: yields are modeled with trapezoidal fuzzy numbers, and the risk is measured by semi-deviation. Results of the study indicate a deviation from the Markowitz model which assumes that the yields are normally distributed, and that the appropriate risk measure is the variance of returns. Portfolios obtained by fuzzy methodology are characterized by higher values of intellectual capital, when compared to its counterparts obtained from Markowitz optimization.
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