Güncel Gönderiler: MF - Makale Koleksiyonu | Endüstri Mühendisliği Bölümü / Department of Industrial Engineering
Toplam kayıt 36, listelenen: 1-20
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Maintenance policy analysis of the regenerative air heater system using factored POMDPs
(Elsevier Ltd, 2022-03)Maintenance optimization of multi-component systems is a difficult problem. Partially Observable Markov Decision Processes (POMDPs) are powerful tools for such problems under uncertainty in stochastic environments. In this ... -
Challenges in the CO2 emissions of the Turkish power sector: Evidence from a two-level decomposition approach
(Elsevier Ltd, 2021-06)Decarbonization of the energy system is urgent to avert the disruptions in the climate. Considering its share, the low carbon transition of the power sector is pivotal. Growing electricity demand poses unique challenges ... -
Evaluation of proactive maintenance policies on a stochastically dependent hidden multi-component system using DBNs
(Elsevier Ltd, 2021-07)In complex systems with stochastically dependent components which are not observed directly, determining an effective maintenance policy is a difficult task. In this paper, a dynamic Bayesian network based maintenance ... -
Scheduling and simulation of maritime traffic in congested waterways: An application to the Strait of Istanbul
(Cambridge University Press, 2021-05)The aim of this study is to develop a simulation model which is capable of mimicking actual vessel arrival patterns and vessel entrance decisions (which are made based on expert opinions generally) on congested, narrow ... -
Cost-effective fault diagnosis of a multi-component dynamic system under corrective maintenance
(Elsevier Ltd, 2021-04)Maintenance planning and execution are challenging tasks for every system with complex structure. Interdependent nature of the components that builds up the system may have significant effect on system integrity. While ... -
Türk hazır giyim sanayi için veri madenciliği tabanlı bir kalıcı indirim yönetim sistemi prototipi
(Tübitak, 2010-12)Tekstil sektörünün önemli bir alt-sektörü olan hazır giyim sanayindeki eğilim, üretici firmaların aynı zamanda perakendeci olarak da faaliyet göstermeleridir (LC Waikiki, Mavi Jeans, v.b.). Son yıllarda özellikle A.B.D’de ... -
Driving forces of Turkey's transportation sector CO2 emissions: An LMDI approach
(Elsevier Ltd, 2020-08-01)The transportation sector is one of the main contributors to global greenhouse gas (GHG) emissions. As the efforts towards emission mitigation increase, the expectation from the sector arises equally. In this analysis, the ... -
A stochastic risk-averse framework for blood donation appointment scheduling under uncertain donor arrivals
(Springer, 2020-12)Blood is a key resource in all health care systems, usually drawn from voluntary donors. We focus on the operations management in blood collection centers, which is a key step to guarantee an adequate blood supply and a ... -
Assessing the efficiency of hospitals operating under a unique owner: a DEA application in the presence of missing data
(Inderscience Publishers, 2010-05)Originally developed in the late 1970s to assess the efficiency of comparable operating units, Data Envelopment Analysis (DEA) has since been used in a variety of contexts. Although incomplete data sets are often encountered ... -
A DBN based reactive maintenance model for a complex system in thermal power plants
(Elsevier Sci Ltd, 2019-10)Thermal power plants consist of several complex systems having many interacting hidden components. Any unexpected failure may lead to prolonged downtime and serious lost profits. Therefore, implementing an effective ... -
Dynamic frontier estimation for monitoring team performances: A case on Turkish first division football league
(Emerald Group Publishing Limited, 2019-06-10)Purpose: This paper aims to investigate how predictions of football league standings and efficiency measures of teams, obtained through frontier estimation technique, evolve compared to actual results. Design/methodology/approach: ... -
Parametrik ve parametrik olmayan verimlilik değerlendirmesi ve karşılaştırılması: Türkiye elektrik santralleri örneği
(2017)Çalışma boyunca Türkiye’deki çeşitli enerji santrallerinin operasyonel ve uzun vadeli yatırım performansları Stokastik Sınır Analiz (SSA) ve Veri Zarflama Analizi (VZA) kullanılarak karşılaştırıldı. Veri kümesi, özel ve ... -
Limanlarda kullanılan iş makinelerinde risk analizi çalışması
(2017)Limanlar genellikle iş yerleri arasında çok önemli bir alanı kapsamaktadır. İçeriğinde ne olduğu kendilerince bilinmeyen yükler ile uğraşan çalışanların, geniş bir yelpazede makinelerle birlikte çalışarak görev yaptığı ve ... -
Mobilya sektöründe pnömatik zımbalama ve vidalama işlerinin ergonomik risk değerlendirmesi
(2017)Uygun olmayan çalışma duruşları kas iskelet sistemi rahatsızlıklarına neden olduğu gibi, üretimdeki verimin de düşmesine yol açmaktadır. Dolayısıyla ergonomi disiplininin öncelikli amacı, çalışma koşullarını iyileştirerek, ... -
Otomotiv kablo imalatında ergonomik risk analizi
(2017)Çalışma yaşamında "kas iskelet sistemi hastalıkları" (KİSH) önemli bir sağlık sorunudur. Bu çalışmanın amacı tehlikeli sınıftaki bir işyerinde işlerin ergonomik risklere göre değerlendirilmesidir. Çalışmada, kablo imalatı ... -
Assortment optimization with log-linear demand: application at a Turkish grocery store
(Elsevier Ltd, 2019-09)In retail sector, product variety increases faster than shelf spaces of retail stores where goods are presented to consumers. Hence, assortment planning is an important task for sustained financial success of a retailer ... -
Performance analysis of an aggregation and disaggregation solution procedure to obtain a maintenance plan for a partially observable multi-component system
(Elsevier Sci Ltd, 2017-11)We analyze the performance of an aggregation and disaggregation procedure in giving the optimal maintenance decisions for a multi-component system under partial observations in a finite horizon. The components deteriorate ... -
Sensitivity analysis for models with multiple behavior modes: a method based on behavior pattern measures
(JUL-DEC 20)Sensitivity analysis of system dynamics models is essentially about sensitivity of patterns of output behaviors to inputs, since system dynamics modeling is behavior pattern oriented. In this study, a regression-based ... -
Deprem sonrası planlamaya yönelik lojistik ağ tasarımı: Ümraniye bölgesinde farklı deprem senaryoları için bir uygulama
(Pamukkale Univ, 2019)In this study, a logistic network design for post-earthquake planning was developed. The purpose of this design is to develop a plan that enables earthquake survivors to access to basic humanitarian needs in the shortest ... -
Minimization of rest mismatches in round robin tournaments
(Pergamon-Elsevier Science Ltd, 2018-11-01)In sports tournaments, an occurrence of a difference in the rest periods of opponent teams in a game, which we refer to as a rest mismatch, will disadvantage the less rested team. Thus, it is only fair to expect opposing ...