Browsing İşletme Bölümü by Publisher "Elsevier Science Bv"

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Computing non-stationary (s, S) policies using mixed integer linear programming

Xiang, Mengyuan; Rossi, Roberto; Martin-Barragan, Belen; Tarım, S. Armağan (Elsevier Science Bv, 2018-12-01)

This paper addresses the single-item single-stocking location non-stationary stochastic lot sizing problem under the (s, S) control policy. We first present a mixed integer non-linear programming (MINLP) formulation for ...
Heuristic policies for the stochastic economic lot sizing problem with remanufacturing under service level constraints

Kılıç, Onur; Tunç, Hüseyin; Tarım, S. Armağan (Elsevier Science Bv, 2018-06-16)

In this paper, we address the stochastic economic lot sizing problem with remanufacturing under service level constraints. The problem emerges in hybrid production systems where demand can be met via two alternative sources: ...
The degree of financial liberalization and aggregated stock-return volatility in emerging markets

Umutlu, Mehmet; Akdeniz, Levent; Altay-Salih, Aslıhan (Elsevier Science Bv, 2010-03)

In this study, we address whether the degree of financial liberalization affects the aggregated total volatility of stock returns by considering the time-varying nature of financial liberalization. We also explore channels ...

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