Ada, Erhan
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Ada, E.
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Email Address
erhan.ada@ieu.edu.tr
Main Affiliation
03.02. Business Administration
Status
Former Staff
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Scopus Author ID
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WoS Researcher ID
Sustainable Development Goals
5
GENDER EQUALITY
0
Research Products
9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
6
Research Products
13
CLIMATE ACTION
0
Research Products
8
DECENT WORK AND ECONOMIC GROWTH
4
Research Products
14
LIFE BELOW WATER
0
Research Products
17
PARTNERSHIPS FOR THE GOALS
1
Research Products
1
NO POVERTY
0
Research Products
2
ZERO HUNGER
0
Research Products
4
QUALITY EDUCATION
3
Research Products
11
SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
3
GOOD HEALTH AND WELL-BEING
0
Research Products
6
CLEAN WATER AND SANITATION
0
Research Products
12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
10
REDUCED INEQUALITIES
1
Research Products
15
LIFE ON LAND
0
Research Products
7
AFFORDABLE AND CLEAN ENERGY
0
Research Products
Documents
19
Citations
608
h-index
11
Documents
21
Citations
451
Scholarly Output
14
Articles
7
Views / Downloads
0/0
Supervised MSc Theses
3
Supervised PhD Theses
2
WoS Citation Count
259
Scopus Citation Count
67
WoS h-index
4
Scopus h-index
3
Patents
0
Projects
0
WoS Citations per Publication
18.50
Scopus Citations per Publication
4.79
Open Access Source
8
Supervised Theses
5
| Journal | Count |
|---|---|
| 20Th Internatıonal Conference, Euro Mını Conference Contınuous Optımızatıon And Knowledge-Based Technologıes, Europt'2008 | 1 |
| Agrıbusıness | 1 |
| Brain and Behavior | 1 |
| CIE 2014 - 44th International Conference on Computers and Industrial Engineering and IMSS 2014 - 9th International Symposium on Intelligent Manufacturing and Service Systems, Joint International Symposium on "The Social Impacts of Developments in Information, Manufacturing and Service Systems" - Proceedings | 1 |
| Ege Academıc Revıew | 1 |
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Article Citation - WoS: 38Citation - Scopus: 55Cost Management Through Product Design: Target Costing Approach(Taylor & Francis Ltd, 2010) Zengin, Yasemin; Ada, ErhanThe purpose of this study is to explore the role of target costing in managing product costs while promoting quality specifications that will meet customer requirements. In addition, it aims to develop a target costing module that will simplify implementation of target costing especially in small and medium enterprises (SMEs). Tools of operations management such as quality function deployment (QFD) and value engineering (VE) have been considered and evaluated in terms of their integration into the target costing. In order to investigate the total effect, an implementation of the QFD deployment-target costing process (QFD-TC process) was conducted in a small manufacturing company. Previous studies on target costing were mostly conducted in lead companies. This study focuses on implementation of the QFD-TC process in SMEs. Overall, it was found that the QFD-TC process was an essential technique in managing the costs of both a product and the overall production process. Combining target costing with QFD and VE techniques provides companies with a competitive cost advantage.Conference Object Simultaneous Allocation of Continuous Berths and Mobile Cranes With Variable Handling Times(Vilnius Gediminas Technical Univ Press, Technika, 2008) Eliiyi Türsel, Deniz; Oezcam, Burcu; Ada, Erhan; Gueldogan, Evrim; Sevil, Bengue; Yumurtacı Hüseyinoğlu, Işık ÖzgePort management is a strategic issue for the developing economies. Its activities directly influence the trade volume of the region where the port is located, increase the investment in the region, and contribute to the overall economic development. There are many activities and decisions to be arranged and managed in a port. In this paper, one of the most important port management activities, Berth Allocation Problem, is studied in detail, to reduce congestion in the port. The contribution of the study is based on simultaneous allocation of continuous berths and mobile cranes. The approach is applied to the Port of Izmir and promising preliminary results of our study are presented.Article Citation - WoS: 4Citation - Scopus: 5Detecting Language Network Alterations in Mild Cognitive Impairment Using Task-Based Fmri and Resting-State Fmri: a Comparative Study(John Wiley and Sons Ltd, 2024) Kemik, K.; Ada, E.; Çavuşoğlu, B.; Aykaç, C.; Savaş, D.D.E.; Yener, G.Objective: The objective of this study was to investigate the functional changes associated with mild cognitive impairment (MCI) using independent component analysis (ICA) with the word generation task functional magnetic resonance imaging (fMRI) and resting-state fMRI. Methods: In this study 17 patients with MCI and age and education-matched 17 healthy individuals as control group are investigated. All participants underwent resting-state fMRI and task-based fMRI while performing the word generation task. ICA was used to identify the appropriate independent components (ICs) and their associated networks. The Dice Coefficient method was used to determine the relevance of the ICs to the networks of interest. Results: IC-14 was found relevant to language network in both resting-state and task-based fMRI, IC-4 to visual, and IC-28 to dorsal attention network (DAN) in word generation task-based fMRI by Sorento-Dice Coefficient. ICA showed increased activation in language network, which had a larger voxel size in resting-state functional MRI than word generation task-based fMRI in the bilateral lingual gyrus. Right temporo-occipital fusiform cortex, right hippocampus, and right thalamus were also activated in the task-based fMRI. Decreased activation was found in DAN and visual network MCI patients in word generation task-based fMRI. Conclusion: Task-based fMRI and ICA are more sophisticated and reliable tools in evaluation cognitive impairments in language processing. Our findings support the neural mechanisms of the cognitive impairments in MCI. © 2024 The Authors. Brain and Behavior published by Wiley Periodicals LLC.Article Citation - WoS: 1Citation - Scopus: 1Patterns of Longitudinal Subcortical Atrophy Over One Year in Amnestic Mild Cognitive Impairment and Its Impact on Cognitive Performance: a Preliminary Study(Turkiye Klinikleri, 2024) Çavuşoğlu, B.; Hünerli, D.; Emek, Savaş, D.D.; Yener, G.; Ada, E.Background/aim: Amnestic mild cognitive impairment (aMCI) is a risk factor for dementia, and thus, it is of interest to enlighten specific brain atrophy patterns in aMCI patients. We aim to define the longitudinal atrophy pattern in subcortical structures and its effect on cognition in patients with aMCI. Materials and methods: Twenty patients with aMCI and 20 demographically matched healthy controls with baseline and longitudinal structural magnetic resonance imaging scans and neuropsychological assessments were studied. The algorithm FIRST (FMRIB’s integrated registration and segmentation tool) was used to obtain volumes of subcortical structures (thalamus, putamen, caudate nucleus, nucleus accumbens, globus pallidus, hippocampus, and amygdala). Correlations between volumes and cognitive performance were assessed. Results: Compared with healthy controls, aMCI demonstrated subcortical atrophies in the hippocampus (p = 0.001), nucleus accumbens (p = 0.003), and thalamus (p = 0.003) at baseline. Significant associations were found for the baseline volumes of the thalamus, nucleus accumbens, and hippocampus with memory, the thalamus with visuospatial skills. Conclusion: aMCI demonstrated subcortical atrophies associated with cognitive deficits. The thalamus, nucleus accumbens, and hippocampus may provide additional diagnostic information for aMCI. © 2024, Turkiye Klinikleri. All rights reserved.Article Citation - WoS: 212A New Framework for Service Supply Chains(Routledge Journals, Taylor & Francis Ltd, 2007) Baltacioglu, Tuncdan; Ada, Erhan; Demirbağ Kaplan, Melike; Yurt, Oznur; Kaplan, Y. CemDespite the extensive amount of academic work devoted to supply chain management, today the structure of service supply chains still remains unexplored. The aim of this paper is to verify and explain this gap with regard to the unique nature of the services industry and the applicability of existing supply chain management literature to service businesses. This paper develops a new model for service supply chains and applies it to the healthcare industry. The results of this study are relevant both to practitioners in the services industry and to researchers conducting further studies in the field.Doctoral Thesis Optimization and Simulation Models for Efficient Port Container Terminal Management(İzmir Ekonomi Üniversitesi, 2010) Ursavaş Güldoğan, Evrim; Ada, ErhanKüresel tedarik zincirinin, kritik bir deniz ulaşım noktasında bulunan İzmir Limanının etkin olarak işletilmesi bölge ve Türkiye ekonomisi açısından ayrı bir önem taşımaktadır. Mevcut veriler ve yapılan gözlemler, liman işletim faaliyetlerinin önemli bir aşaması olan kargo terminallerinin daha etkin olarak kullanılmasının, giderek artan iç ve dış talebin karşılanmasında acil bir ihtiyaç olduğunu ortaya koymaktadır. Bu tez, kargo terminal işlemlerinin iyileştirilmesinde özgün yaklaşımlar geliştirmeyi amaçlamaktadır.Öncelikle, çoklu zaman dilimlerinde, gelen gemilerin rıhtım ve kıyı vinçlerine atanması problemi çalışılmıştır. Birden fazla terminal için, rıhtım ve vinç atamalarını eş zamanlı olarak gerçekleştirebilen matematiksel bir model geliştirilmiştir. Çalışmada, sürekli rıhtım yapısı ile birlikte sabit ve gezer vinç özellikleri de modellenmiştir. Gemilerin elleçleme süreleri dinamik olup, servis süresince değiştirilebilen vinç atamalarına bağlı olarak belirlenmektedir. Önerilen model, gemilerin elleçleme sürelerini mimimize etmeyi amaçlamaktadır. Modelin pratikteki etkilerini değerlendirebilmek amacıyla İzmir Limanı için bir uygulama gerçekleştirilmiştir. Mevcut durum ile yapılan karşılaştırmalar gemi bekleme sürelerinde önemli kısalmalar elde edilebileceğini göstermektedir.Ardından, İzmir Limanındaki kargo terminalinin bir ?kesikli benzetim modeli? geliştirilmiş ve bu model ithalat kargo konteynerlerinin elleçlenmesi probleminin analizinde kullanılmıştır. Model, çoklu rıhtım yapısında, depolama alanı tahsis problemini operasyonel düzeyde ele almaktadır. Hiyerarşik bir çözüm yöntemi geliştirilerek her aşamada farklı karar verme kuralları uygulanmıştır. Önerilen depolama yöntemlerinin değerlendirilmesinde tüm konteyner terminalinin performansı dikkate alınmıştır. Gerçek zamanlı ortamın yansıtılabilmesi için farklı trafik yoğunlukları uygulamaya alınmıştır. Benzetim modeli uygulama sonuçları rıhtım vinçlerindeki darboğazı işaret etmektedir. Rıhtım vinci veriminin uygun depolama stratejileri kullanımıyla iyileştirilebileceği görülmektedir. İlk aşamada, taşıma uzaklıklarını ve depolama alanı vinçlerinin iş yüklerini dikkate alan, entegre atama yöntemi, rıhtım vinci darboğazını en iyi şekilde kontrol edebilmektedir. Hiyerarşik yapının ikinci aşamasında ise, tahmini konteyner liman terk ediş zamanlarının dikkate alındığı, ayrılmış stratejinin kullanılması ile gereksiz konteyner yer değiştirmelerinin sayısının azaldığı gözlemlenmiştir. Modelin uygulanması, mevcut liman performans göstergelerinde önemli iyileştirmeler ortaya koymuştur.Projenin İzmir Limanında uygulanması, etkin bir liman yönetimi, daha iyi faaliyet ve mali performans göstergeleri yanında bölgede istihdamın arttırılması, kalifiye işgücünün geliştirilmesi ve giderek Ege Bölgesinde ticaret hacminin artmasını sağlayabilecektir.Master Thesis The Industry Research of the Marble Sector as an Emerging Market: The Aegean Region(İzmir Ekonomi Üniversitesi, 2006) Atay, Ceyda; Ada, ErhanBu çalışmada, son on yılda ülkemizde yarattığı istihdam, katma değer, ihracat ve yatırımile önemli bir ekonomik potansiyel yaratarak önemli bir sektör haline gelen doğaltaşsektörünün analizi yapılmıştır.Bu çalışmamızda Mermer ve Doğal Taş sektörünün mevcut ve gelecektekidurumudikkate alınmış ve yapılan anket uygulaması sonunda elde edilen bulgular ışığında EgeBölgesinde faaliyet gösteren Mermer Firmalarının doğal taş ihracatlarını arttırmaolanaklarının araştırılması hedef olarak alınmıştır.Çalışmamız üç bölümden oluşmaktadır. Birinci bölümde, dünya'da mermerciliksektörünün mevcut durumu incelenerek başlıca hedef pazarlarının durumu,üretimmiktarları,ihracat ve ithalat verileri gösterilmiştir.Türkiye'de mermercilik sektörünündurumu,gelişim süreci,dış ticareti,dünyada ticaretindeki mevcut yeri ve rekabet olanaklarıincelenmiştir.Bunlara ilave olarak, Ege bölgesi mermercilik sektörünün genel yapısı önplana alınmış, Ege bölgesindeki illerin mermer ve doğal taş rezervleri ,üretimi ve ticaretiirdelenerek spesifik bulgular incelenmiştir.İkinci bölümde Türkiye mermer sektörünün sorunları ve bu sorunların çözümü içinyapılan önerileri içermektedir.Üçüncü bölümde, Ege bölgesinde faaliyet yapan mermer firmalarının ihracatlarınıgeliştirmesine yönelik anket uygulamasının sonuçları verilmiştir ve uygulama sonucu eldeedilen sonuçlar değerlendirilmiştir. Üçüncü bölümün son kısmında ise Türkiye doğal taş vemermer sektörünün durum analizi (Swot Analizi) yapılmıştır.Tezin son kısmında ; bu araştırma esnasında başvurulan kaynakların listesiyeralmaktadır.Master Thesis Erp, System Analysis, Software Selection and Implementation(İzmir Ekonomi Üniversitesi, 2007) Kurtuluş, Esin; Ada, ErhanThe different way of handling the process of ERP implementation brings about many success and failure stories. This thesis shows a different approach in ERP implementation which is applied to three packaging companies of a company group. It also reflects the experience gained by system consultant team in these projects.This thesis consists of four parts; First part recommends an ordering of initial steps and all of the implementation process steps, that directly affects the final success of the implementation. Second part is about system analysis; the methodology of system analysis and critical success factors are explained. In third part ERP software selection, based on the results of system analysis steps, is discussed. Lastly, fourth part shows critical factors of success during implementation step.Keywords: ERP, SYSTEM ANALYSIS, ERP IMPLEMENTATIONReview Article Cloud Manufacturing: a New Cloud Computing Model in Operations Management(Ege Univ, Fac Economics & Admin Sciences, 2016) Tayaksi̇, Cansu; Ada, Erhan; Kazancoglu, YigitTogether with information and communications technology, the concept of management and business conducting has been changing. Cloud computing, as one of those new technologies, gives dynamic services to businesses through the Internet. Cloud Computing makes the service reachable from everywhere, everytime with the pay-as-you-go system. It requires less management effort and workflow could be managed with less communication. As a business function, similar developments has been observed in operations management field. One of the new Technologies is Cloud Manufacturing system which has been developed under Cloud Computing applications. Aim of this new model is providing benefits like lower costs and higher performances, or increasing the market entry speed for businesses. In this study, conceptual structure of Cloud Manufacturing and the advantages has been investigated. Lastly, a business model has been presented that explains the logic flow and can be used as a road map for businesses.Conference Object Citation - Scopus: 1Integrated Fuzzy Topsis and Goal Programming Technique for Machine Selection Problem: an Application(Computers and Industrial Engineering, 2014) Ada E.; Kazançoğlu, Yiğit; Sagnak M.Globalization forces firms to adapt to changing market conditions and increased uncertainty. Shorter product life cycles, changing and increased customer expectations, and technological developments have specially suppressed manufacturing firms. In order to increase firms' performance and efficiency, machine and equipment selection is one of the most important decisions. In this study, the machine selection problem is solved by integrated fuzzy TOPSIS and goal programming techniques. The aim of the study is to provide managers meaningful support about machine selection problem. The criteria for machine selection are determined by literature review and managers' judgments. In the proposed method, the criteria weights are determined by fuzzy TOPSIS, and then the final selection of alternatives are made by goal programming.
