Erkan, Turan Erman
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Name Variants
Turan Erman Erkan
Erkan T.
Erkan,T.E.
T.E.Erkan
E., Turan Erman
Turan Erman, Erkan
Erkan, Turan Erman
E.,Turan Erman
Erkan,Turan Erman
T. E. Erkan
T.,Erkan
T., Erkan
Erkan, E. T.
Erkan T.
Erkan,T.E.
T.E.Erkan
E., Turan Erman
Turan Erman, Erkan
Erkan, Turan Erman
E.,Turan Erman
Erkan,Turan Erman
T. E. Erkan
T.,Erkan
T., Erkan
Erkan, E. T.
Job Title
Profesör Doktor
Email Address
erman.erkan@atilim.edu.tr
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Scholarly Output
61
Articles
20
Citation Count
398
Supervised Theses
33
61 results
Scholarly Output Search Results
Now showing 1 - 10 of 61
Master Thesis Borsa İstanbul'da ilk halka arz olan işletmelerin Veri Zarflama Analizi ile değerlendirilmesi (2021-2023)(2024) Yılmaz, Gizem Canan; Erkan, Turan Erman; Industrial EngineeringBu çalışmada, Borsa İstanbul'da 2021-2023 yıllarında İlk Halka Arz'ını (İHA) gerçekleştirmiş işletmelerin işlem gördüğü pazar bazında etkinliğinin ölçülmesi ve değerlendirilmesi amaçlanmaktadır. İşletmelerin etkinliği, bir Veri Zarflama Analizi modeli olan çıktı yönelimli BCC yöntemi yardımıyla ölçülmüştür. Bu alanda literatürde yer alan çalışmaların incelenmesi ve çalışmanın yapısına göre BCC modeli için kullanılmak üzere üç girdi (çalışan sayısı, toplam sermaye ve satışların maliyeti) ve iki çıktı (net satışlar ve dönem net karı) belirlenmiştir. 2021-2023 yıllarında halka arz olan 94 işletme, çıktı yönelimli BCC modeli ile analiz edilmiştir. Sonuç olarak, 2021 yılında 10 şirket, 2022 yılında 14 şirket ve 2023 yılında ise 11 şirketin performans gösterdiği belirlenmiştir. Ayrıca, performansları daha düşük olan şirketler için referans oluşturabilecek en başarılı şirketler belirlenmiştir. Çalışmaya ait sonuçlar, BIST'de halka arzı tamamlanan firmaların etkinliği ortaya koymanın yanı sıra etkinliği artırma konusunda iyileştirme önerileri sunmaktadır.Conference Object Citation Count: 0Layout improvement method selection for a mass production facility(IEOM Society, 2018) Baç,U.; Erkan,T.E.; Industrial EngineeringPurpose of this study is to identify, analyze, and propose a solution to an industrial problem that would satisfy the needs of a manufacturing company by using tools and techniques of Industrial Engineering. For this purpose, production system of a metal cap manufacturer company, which is a well-known mass production company in packaging industry since 1963 in Turkey, has been inspected. In the first part of the study, overall system has been analyzed, problem symptoms have been identified, and then the problem definition has been made. Two problems have been defined as: (i) insufficient production capacity, and (ii) inefficient production system. According to these findings, objectives of this study has been determined as: (i) the improvement of the efficiency of current system by making some layout changes and making small-scale investments, (ii) analyze large-scale investment alternatives in the long run and conduct engineering economic analysis of these investment alternatives. Within this scope, alternative solution approaches, analysis of these alternatives, and selection of best alternative have been accomplished. As a result of this study capacity of the facility can be increased by 16% and investment required for this increase has a payback period of 71 days. © IEOM Society International.Master Thesis Ruanda'da finansal okuryazarlık düzeyinin hane halkının tasarruf ve yatırımları(2024) Nıyomugabo, Melchıade; Erkan, Turan Erman; Industrial EngineeringBu çalışma, Ruanda'da finansal okuryazarlık düzeyinin hane halkının tasarruf ve yatırımları üzerindeki etkisini nicel bir araştırma tasarımı uygulayarak araştırmıştır. Araştırmada, Ruandalıların finansal varlıklar ve ürün yönetimine yönelik finansal yeteneklerini test etmek amacıyla Ruanda Ulusal İstatistik Enstitüsü tarafından yürütülen Ruanda'nın 2020 mali kapsamı anketinden elde edilen ikincil veriler kullanıldı. Anket, Ruanda'daki bireysel hanelerin finansal okuryazarlık düzeyini ve Gelir, Cinsiyet, Yaş ve Eğitim düzeyi dahil Sosyo-Demografik faktörleri ölçmek için temsili olarak kullanılan soruları içeriyordu. Genel olarak Ruanda vatandaşları finansal okuryazardır ve genel finansal okuryazarlık ortalaması 8,85/12 puan olup %73,75'tir. Verileri analiz etmek ve İkili Lojistik Regresyon Modeli yordayıcılarının parametrelerini tahmin etmek için Sosyal Bilimler Çalışmaları İstatistik Paketi (SPSS) kullanıldı. Araştırma bulguları, bireysel finansal okuryazarlık düzeylerinin tasarruf ve yatırım olasılığı üzerinde güçlü bir etkisi olduğunu tespit etti. Ayrıca, gelir aralığı da dahil olmak üzere demografik özellikler ve 12 yaş ve üzeri örgün eğitim almış katılımcıların bir parçası olmak, Ruanda nüfusu arasında tasarruf ve yatırım yapma olasılığını etkilemektedir. Cinsiyet ve yaş, hane halkı tasarrufları ve yatırımları üzerinde güçlü bir etki olmaksızın çelişkili sonuçlar gösterdi. Genel olarak çalışma bulguları, 50.000 Rwf'nin üzerindeki gelir grubunun, 12 yıl ve üzeri eğitim seviyesinin ve finansal okuryazarlık düzeyinin hane halkı tasarruflarını ve yatırımlarını sırasıyla 2,87, 1,78 ve 1,51 oranlarla etkilediğini gösterdi.Article Citation Count: 23SELECTING THE BEST WAREHOUSE DATA COLLECTING SYSTEM BY USING AHP AND FAHP METHODS(Univ Osijek, Tech Fac, 2014) Erkan, Turan Erman; Can, Gulin Feryal; Industrial EngineeringRecently companies have begun to use their storage effectively to attain leadership in the market environment, utilizing Barcode and RFID (Radio Frequency Identification) systems for warehouse management. In this study AHP (Analytic Hierarchy Process) and FAHP (Fuzzy Analytic Hierarchy Process) are used to choose between Barcode and RFID systems for the company warehouse data collection system. This decision is affected by four criteria which are: cost, functionality, sustainability and performance. The barcode system was preferred by 68 % and RFID was preferred by 32 % according to AHP. For FAHP, barcode system was preferred by 72 % and RFID was preferred by 28 %. Consequently AHP values are consistent with FAHP values. Finally barcode system is selected for the company's warehouse data collection system and FAHP is found to be relatively more sufficient in terms of description of this decision-making process because of its fuzziness and vagueness compared to AHP method.Article Citation Count: 63An Application of the Fuzzy ELECTRE Method for Academic Staff Selection(Wiley, 2013) Rouyendegh, Babak Daneshvar; Erkan, Turan Erman; Industrial Engineering; Computer EngineeringThere are various methods regarding staff selection in different fields. Thanks to the increasing improvements in the field of education, universities around the world tend to demand high -quality and professional academic staff. Staff selection is a multi-criteria decision-making processes, and of strategic importance for most universities. This study deals with actual application of academic of staff selection using the opinion of experts to be applied into a model of group decision - making called the Fuzzy ELECTRE (Elimination Et Choix Traduisant la REaite) method. There are ten qualitative criteria for selecting the best candidate amongst five prospective applications. (c) 2012 Wiley Periodicals, Inc.Conference Object Citation Count: 0An Evaluation of Using Innovative Information Systems in Local Governments in Turkey: The Case of Cankaya Municipality(Acad Conferences Ltd, 2012) Sahin, Savas Zafer; Erkan, Turan Erman; Cekic, Anil; Industrial Engineering; Department of Public Administration and Political ScienceIn the last three decades, waves of globalization caused an upsurge of interest about localities and local governments with respect to various factors of production and consumption. Turkish case is no exception to this change. Beginning with 2000's, Turkish government initiated a new program for a renewed distribution of authorities between central and local governments resulting in rescaling of Turkish state. New authorities and responsibilities were decentralized to local governments. As the local governments in Turkey became the locus of all political activities, debates concerning institutional capacity of them became wide-spread. It has been widely argued that although increasing number of authorities were transferred to local governments; they lack necessary institutional capacity and know-how to manage increasing number of responsibilities and changing spatial structure. For this respect, the problem with local governments in Turkey has three facets. First of all, decision-making mechanisms of local governments is weak, both process wise and with regards to rationality, accountability and transparency. Mostly, political patronage is more influential than good governance. Secondly, implementation level of innovative information systems in decision making-mechanism with regards to spatial issues, service production and public participation is poor. For instance, although information systems like UIS (Urban Information systems), IAM (Intangible Asset Management), IRP etc. are used, they are either poorly integrated to management system or became obsolete because of lack of proper performance measurement and evaluation. In Turkish case there is a clear gap between management practices of local government service delivery and use of innovative information systems. In this paper, it is aimed to portray the underlying dynamics and problems behind ineffective use of innovative information systems in local governments in Turkey. For this purpose, one of the largest and well-known district municipalities of Turkey, Cankaya Municipality in Ankara is taken for a case study. Cankaya Municipality's technological capacity and use of innovative information systems is assessed in terms of accountability, decision-making, and public participation. Results of the assessment will be used to develop some strategies and tools for improving municipality's capacity to make better use of information systems.Article Citation Count: 28Selecting the best warehouse data collecting system by using AHP and FAHP methods;(2014) Erkan,T.E.; Can,G.F.; Industrial EngineeringRecently companies have begun to use their storage effectively to attain leadership in the market environment, utilizing Barcode and RFID (Radio Frequency Identification) systems for warehouse management. In this study AHP (Analytic Hierarchy Process) and FAHP (Fuzzy Analytic Hierarchy Process) are used to choose between Barcode and RFID systems for the company warehouse data collection system. This decision is affected by four criteria which are: cost, functionality, sustainability and performance. The barcode system was preferred by 68 % and RFID was preferred by 32 % according to AHP. For FAHP, barcode system was preferred by 72 % and RFID was preferred by 28 %. Consequently AHP values are consistent with FAHP values. Finally barcode system is selected for the company's warehouse data collection system and FAHP is found to be relatively more sufficient in terms of description of this decision-making process because of its fuzziness and vagueness compared to AHP method.Conference Object Citation Count: 0Selection of ERP System Using QFD Approach: A Pilot Study From Turkey(Acad Conferences Ltd, 2012) Ictenbas, Burcu Devrim; Rouyendegh, Babak Daneshvar; Erkan, Turan Erman; Industrial Engineering; Computer EngineeringToday companies face the challenge of increasing competition, expanding markets and rising competition. Many organizations seek to improve their competitiveness by utilizing advanced information technology, such as Enterprise Resource Planning (ERP) systems. Selection of appropriate ERP system is a vital decision for any enterprise in this intense competitive environment. The selection process is complicated since complexity of ERP systems and too many alternatives. Requirements analysis of a software system like ERP is often considered to be one of the most important steps in the software selection process. Quality Function Deployment (QFD) is a methodology to translate customer requirements into the final product or service characteristics. In spite of successful applications of QFD in familiar fields such as product planning, education quality and service quality, the usability of QFD in the selection of software systems have been seen in only few studies. The purpose of the study is to determinethe most important technical attributes of the ERP systems from the end - users' perspective using QFD methodology. The developed framework integrates ERP characteristics obtained from vendors in the market and the list of customer requirements by taking into account the company profile and strategic selection criteria. The solution proposed in this study will support decision makers to manage the early stages of ERP selection according the company's needs.Article Citation Count: 5A Study of Load Demand Forecasting Models in Electricity Using Artificial Neural Networks and Fuzzy Logic Model(Materials & Energy Research Center-merc, 2022) Al-ani, B. R. K.; Erkan, E. T.; Industrial EngineeringSince load time series are very changeable. demand forecasting of the short-term load is challenging based on hourly, daily, weekly, and monthly load forecast demand. As a result, the Turkish Electricity Transmission Company (TEA) load forecasting is proposed in this paper using artificial neural networks (ANN) and fuzzy logic (FL). Load forecasting enables utilities to purchase and generate electricity, load shift, and build infrastructure. A load forecast was classified into three sorts (hourly, weekly and monthly). Over time, forecasting power loads with artificial neural networks and fuzzy logic reveals a massive decrease in ANN and a progressive increase in FL from 24 to 168 hours. As illustrated, fuzzy logic and artificial neural netANorks outperform regression algorithms. This study has the highest growth and means absolute percentage error (MAPE) rates compared to FL and ANN. Although regression has the highest prediction growth rate, it is less precise than FL and ANN due to their lower MAPE percentage. Artificial Neural Networks and Fuzzy Logic are emerging technologies capable of forecasting and mitigating demand volatility. Future research can forecast various Turkish states using the same approach.Article Citation Count: 13Combining AHP and ROC with GIS for Airport Site Selection: A Case Study in Libya(Mdpi, 2020) Erkan, Turan Erman; Elsharida, Wael Mohamed; Industrial EngineeringChoosing airport locations requires thorough and comprehensive decisions to be made. To do so in a professional and logical manner is crucial for the social, economic, and logistic settings intended for any region. The present research takes place in Libya, where airports are just as vital for the economy in terms of tourism and investment by allowing for improved transportation throughout the developing market and supplier locations as well as trading between the industrial and financial sectors. For this reason, using the geographic information system (GIS) to determine the appropriate airport site, twenty-three criteria were considered. In addition, two different methods-analytic hierarchy process (AHP) and rank order centroid (ROC)-were utilized to derive the related weights. The comparison of the output maps from these two distinctive approaches shows that both approaches provide identical results. Finally, a sensitivity analysis was carried out to evaluate the reliability of the method used and select the best site among the proposed ones based on the result of the highest suitability index for each candidate site. This research provides a siting approach and substantial support for decision-makers in the issue of airport locations selection in Libya and other developing countries.
