Browsing by Author "Ozen, Yesim Deniz Ozkan"

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Citation - WoS: 23
Citation - Scopus: 28
Decision-making for risk evaluation: integration of prospect theory with failure modes and effects analysis (FMEA)
(Emerald Group Holdings Ltd., 2020) Muhittin Saǧnak; Yigit Kazancoglu; Yeşim Deniz Özkan-Özen; Jose Arturo Garza-Reyes; Garza-Reyes, Jose Arturo; Ozen, Yesim Deniz Ozkan; Sagnak, Muhittin; Kazancoglu, Yigit; Ozkan Ozen, Yesim Deniz
Purpose: The aim of the present study is to overcome some of the limitations of the FMEA method by presenting a theoretical base for considering risk evaluation into its assessment methodology and proposing an approach for its implementation. Design/methodology/approach: Fuzzy AHP is used to calculate the weights of the likelihood of occurrence (O) severity (S) and difficulty of detection (D). Additionally the prospect-theory-based TODIM method was integrated with fuzzy logic. Thus fuzzy TODIM was employed to calculate the ranking of potential failure modes according to their risk priority numbers (RPNs). In order to verify the results of the study in-depth interviews were conducted with the participation of industry experts. Findings: The results are very much in line with prospect theory. Therefore practitioners may apply the proposed method to FMEA. The most crucial failure mode for a firm's attention is furnace failure followed by generator failure crane failure tank failure kettle failure dryer failure and operator failure respectively. Originality/value: The originality of this paper consists in integrating prospect theory with the FMEA method in order to overcome the limitations naturally inherent in the calculation of the FMEA's RPNs. © 2021 Elsevier B.V. All rights reserved.
Citation - WoS: 13
Citation - Scopus: 16
REDUCING FOOD WASTE THROUGH LEAN AND SUSTAINABLE OPERATIONS: A CASE STUDY FROM THE POULTRY INDUSTRY
(FUNDACAO GETULIO VARGAS, 2021) Yigit Kazancoglu; Esra Ekinci; Yesim Deniz Ozkan-Ozen; Melisa Ozbiltekin Pala; Pala, Melisa Ozbiltekin; Ekinci, Esra; Ozen, Yesim Deniz Ozkan; Kazancoglu, Yigit
The growing need for solving the problem of food waste for tackling the survival of the planet and humankind is encouraging researchers to seek sustainable operations that alter the conventional methods that are currently in use in the food industry. Lean thinking has been used in this study to propose sustainable operations that incorporate social economic and environmental aspects and to handle the multidisciplinary and complex nature of reducing food waste. The value stream mapping methodology has been employed to explain food waste and generate drivers and to observe the end-to-end system flow. Since most of the waste is observed in upstream operations in emerging economies one of the biggest meat-processing companies in Turkey is studied for illustrating the proposed methodology. As a result of the model lean and sustainable food operations are suggested considering social economic and environmental aspects.