Anagün, Ahmet Sermet
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Anagun, A. Sermet
Anagun, Ahmet Sermet
Anagun, A. S.
Anagun, AS
Anagun, Ahmet Sermet
Anagun, A. S.
Anagun, AS
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Email Address
sermet.anagun@ieu.edu.tr
Main Affiliation
05.09. Industrial Engineering
Status
Current Staff
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Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
0
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3GOOD HEALTH AND WELL-BEING
0
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4QUALITY EDUCATION
3
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5GENDER EQUALITY
0
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6CLEAN WATER AND SANITATION
1
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7AFFORDABLE AND CLEAN ENERGY
0
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8DECENT WORK AND ECONOMIC GROWTH
0
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
5
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10REDUCED INEQUALITIES
0
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11SUSTAINABLE CITIES AND COMMUNITIES
1
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
1
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13CLIMATE ACTION
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14LIFE BELOW WATER
1
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15LIFE ON LAND
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
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17PARTNERSHIPS FOR THE GOALS
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Documents
28
Citations
356
h-index
10
Documents
23
Citations
252
Scholarly Output
18
Articles
7
Views / Downloads
108/417
Supervised MSc Theses
8
Supervised PhD Theses
0
WoS Citation Count
73
Scopus Citation Count
90
Patents
0
Projects
0
WoS Citations per Publication
4.06
Scopus Citations per Publication
5.00
Open Access Source
7
Supervised Theses
8
| Journal | Count |
|---|---|
| Advances in Intelligent Systems and Computing | 1 |
| Applıed Thermal Engıneerıng | 1 |
| Hacettepe Journal of Mathematıcs And Statıstıcs | 1 |
| Iranıan Journal of Scıence And Technology Transactıon A-Scıence | 1 |
| Journal of Enterprıse Informatıon Management | 1 |
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18 results
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Now showing 1 - 10 of 18
Article Citation - WoS: 7Citation - Scopus: 8Interval Type-2 Fuzzy C-Control Charts Using Ranking Methods(Hacettepe Univ, Fac Sci, 2019) Teken, Hatice Ercan; Anagun, Ahmet Sermet; Teksen, Hatice ErcanControl charts are important for process or product because they provide information about the control situation of process and product. Because of this feature, control charts are used in many fields. Information about the product and/or process, which is under control or not, can be provided by looking the control charts. Fuzzy numbers are used to reduce information losses in operations with crisp numbers. In control charts applications, especially for qualitative control charts, the fuzzy set theory reduces the information losses and provide more flexible decision-making process. In the literature, there are some fuzzy control charts with type-1 fuzzy sets but there are few studies about fuzzy control charts regarding the cases where the data are expressed by type-2 fuzzy sets. The purpose of the study is to create an innovation using the ranking methods, which has not used for control charts in accessible literature, for the fuzzy control charts with interval type-2 fuzzy sets. The fuzzy results are compared with the crisp results. This study introduces ranking methods as new approach to generate interval type-2 fuzzy control charts, which is a different field.Article Citation - WoS: 30Citation - Scopus: 37Experimental Study and Taguchi Analysis on Alumina-Water Nanofluid Viscosity(Pergamon-Elsevier Science Ltd, 2018-01) Elcioglu, Elif Begum; Yazicioglu, Almila Guvenc; Turgut, Alpaslan; Anagun, Ahmet SermetNanofluids as dispersions of fine particles within industrial fluids have potential in thermal applications due to their improved thermal characteristics. On the other hand, their viscosity may be a limitation for forced convective heat transfer, since increase in viscosity increases the pump power requirement. In this study we report experimental results for alumina-water nanofluid viscosity at different temperatures, for different nanoparticle fractions and diameters. Experimental data were collected based on a Taguchi experiment design (L8). Statistical analyses via Taguchi Method were done to determine the effects of experiment characteristics on nanofluid viscosity and relative viscosity. The viscosity of nanofluids decreased sharply with temperature (20-50 degrees C); increased with nanoparticle fraction (1-3 vol%), and increased slightly with nanoparticle diameter (10 +/- 5 nm, 30 +/- 10 nm). Taguchi Analysis revealed that the importance of the parameters on nanofluid viscosity can be sorted from lower to higher sequence as temperature, nanoparticle fraction, and nanoparticle diameter; and they were all statistically significant on nanofluid viscosity. One novel conclusion is that the interaction effect of temperature and nanoparticle volumetric fraction was significant on nanofluid viscosity at alpha = 5%, thus the effect of nanoparticle fraction was different at different temperatures, and vice versa. This interaction effect appeared in the developed nanofluid viscosity equation with a novel term, the product of temperature and nanoparticle fraction. This result may be beneficial for hydrodynamic applications, where the thermal aspects and flow characteristics need to be considered simultaneously. (C) 2017 Elsevier Ltd. All rights reserved.Master Thesis Bibliometric Analysis of Articles Published in the Field of Materials Planning and Estimation of Trends Using Growth Models(İzmir Ekonomi Üniversitesi, 2023) Silyanaki, Ezgi; Anagün, Ahmet SermetBu çalışmada MRP, SAP ve ERP anahtar kelimeleri için bibliyografik veri tabanları yardımı ile metin madenciliği uygulaması olan VOSviewer programından alınan verilerin istatiksel analizi yapılmıştır. Bu kapsamında çalışmada öncelikle, Kurumsal Kaynak Planlaması kavramı, gelişimi, kurumsal kaynak planlaması yazılımının özellikleri, avantajları, işletme performansına etkileri, ERP uygulamaları, ERP yazılımları, Teknik özellikleri, fonksiyonel özellikleri, kullanım amaçları, SAP tarihçesi, SAP kullanım amaçları, ürünleri, SAP modülleri ve entegrasyonu ele alınmıştır. Çalışmada daha sonrasında metin madenciliği hakkında bilgiler verilmiş, Vosvierwer uygulaması ve kullanımı hakkında bilgiler aktarılmıştır. Son olarak konu kapsamında yapılan çalışmalar ve literatür Gompertz büyüme eğrisi ile Pearl büyüme eğrisi ile desteklenmiştir.Article Predicting variables of primary school teachers' technology usage levels with CHAID analysis: Türkiye Case(2025-03-28) Şengül Saime Anagün; Anagün, Ahmet Sermet; Sedef ŞengürArticle Citation - WoS: 6Citation - Scopus: 6Estimation of Biosurfactant Production Parameters and Yields Without Conducting Additional Experiments on a Larger Production Scale(Elsevier, 2022-11) Sarac, Tugba; Anagun, Ahmet Sermet; Ozcelik, Feristah; Celik, Pinar Aytar; Toptas, Yagmur; Kizilkaya, Busra; Cabuk, AhmetIn this study, a Plackett-Burman design was applied to investigate critical factors for surface tension. After adding a new factor called production scale, a central composite design (CCD) was constructed to examine nonlinear relations among factors and surface tension. An artificial neural network (ANN) was trained using data from CCD experiments. The ANN with the best structure of 5-6-1 was then tested with different unseen data sets. The predictions from ANN were within the 95% confidence interval (CI), even for a larger production scale, deter-mined by using the replicates. A genetic algorithm (GA) was developed to check how the values of the factors vary if the production scale was set to a user-defined value. Based on the validation experiments, it was observed that the 95% confidence interval of surface tension was 36.83 +/- 1.00 mN m-1 while pH 8, temperature 35 degrees C, incubation time 12 h, and amount of inoculum 2.30%, respectively, for the production scale of 600 mL. The proposed methodological approach with the integration of ANN and GA is considered to make a serious eco-nomic contribution as it allows predicting a proper setup for larger production scales without conducting additional experiments.Master Thesis Application of the Lean Six Sigma Methodology for Improving Long Term Maintenance Planning – Case Study(İzmir Ekonomi Üniversitesi, 2023) Işık Eroğlu, Merve; Anagün, Ahmet SermetGünümüzün rekabetçi dünyasında, tüm çabalar mümkün olan en düşük maliyetle üretim hedeflerine ulaşmaya odaklanır ve mevcut makine/ekipmanlardan maksimum fayda sağlama ihtiyacını vurgular. Bu bağlamda etkili bakım stratejileri, bu amaca ulaşmak için kullanılacak ana araç haline gelmiştir. Bu çalışmada, CNC makinelerinin ve bileşenlerinin ömür analizini yapmak için bir jant şirketinin bakım verileri kullanılmıştır. Bakımda karar verme süreçleri Yalın Altı Sigma Metodolojisi uygulamaları ile desteklenmiştir. Örnek uygulamada, TÖAİK adımları tanımla, ölç, analiz et, iyileştir ve kontrol kullanılmıştır. Çalışmanın amacı, makinelerin tezgah ömür kaynaklı etki analizlerinin yapılarak, potansiyel iyileştirme alanlarının belirlenmesi ve bakım operasyonları için karar verme desteğinin sağlandığı bir alt yapı oluşturmaktır. Sonuç olarak, bu analiz, yaklaşık iki yıllık bir zaman diliminde arıza süresi ve sıklığına ilişkin bilgiler kullanılarak 30 CNC makinesi için gerçekleştirilmiştir.Conference Object Citation - Scopus: 6Intuitionistic Fuzzy C-Control Charts Using Fuzzy Comparison Methods(Springer Verlag, 2019-07-06) Ercan-Teksen H.; Anagün, Ahmet Sermet; Ercan-Teksen, HaticeControl chart is a quality branch that provides information about the process. Fuzzy logic theory is suitable especially for non-measurable data. Using of fuzzy sets for control charts is reasonable given that the data are subjective for qualitative control charts. For this reason, studies of fuzzy control charts are included in the literature. In the literature, fuzzy control charts are generally generated using ordinary fuzzy sets. There is no study about intuitionistic fuzzy control charts in the literature. However, in a process, especially for qualitative data, if some data are considered as intuitionistic fuzzy numbers, corresponding control charts should be created. First of all, within the purpose of this study, upper control limit and lower control limit will be created for intuitionistic fuzzy c-control charts. The other purpose of this study is to generate fuzzy control charts using the intuitionistic fuzzy comparison methods. © 2020, Springer Nature Switzerland AG.Article A Novel Sustainable Biosorbent (ulocladium Consortiale) Proposal With Central Composite Design To Reduce Water Pollution(Springer International Publishing Ag, 2021-04-21) Malkoc, Semra; Anagun, Ahmet Sermet; Deniz, NurcanBiosorption is an efficient and environmental-friendly technology for the decontamination of dyes from industrial wastewater. These properties bio absorbent usage instead of commercial chemicals supports not only the economic dimension, but also environment and social dimensions of sustainability. As a novel bioadsorbent, methylene blue-resistant fungal strain Ulocladium consortiale was isolated from the Lake Tuz (Turkey). The effect of four independent variables pH (7-11), initial dye concentration (10-50 mg/L), biomass dosage (0.1-0.5 g/mL), and contact time (2.5-12.5 min) was studied on methylene biosorption by employing U. consortiale using batch mode. Optimum conditions were selected for maximum biosorption. Central Composite Design (CCD) of Response Surface Methodology (RSM) an ideal solution for fitting a second-order response surface model was performed to determine the optimum levels of parameters and to spot the correlation between the various parameters. The highest removal efficiency (R, %) of methylene blue was achieved with 92.69 % and U. consortiale showed the highest biosorption capacity (q, mg/g) 181.28 mg/g. This efficiency was obtained at 10 pH, 46 mg/L initial dye concentration, 0.2 g/mL biomass dosage, and 2.5 min contact time. The results of CCD of RSM show that Ulocladium consortiale is a suitable and sustainable novel biosorbent can be used in for methylene blue removal under optimal conditions.Master Thesis Multi-Response Optimization of Concrete Manufacturing Process Parameters: Desirability Function Approach(İzmir Ekonomi Üniversitesi, 2019) Mahoro, Jean Francoıs Regıs; Anagün, Ahmet Sermetİnşaat şirketlerinin çok fazla dinamiğe ve şiddetli rekabet ortamına sahip olmasından dolayı, inşaat kalitesini artırmak ve binayı güçlendirebilmek, pazarda ön plana çıkmanın ve stratejik olarak doğru konumda olmanın temel amaçlarıdır. Binanın çökmesini önlemek ve güçlü bir yapı oluşturmak için deneyler yapılmalı ve betonun basınç dayanımı enbüyüklenmelidir. Binaların tahrip olma riskini azaltmak için betonun su emme oranı en aza indirilmelidir. Ayrıca beton akışı, fazladan çaba sarf etmeden rahatça kullanılabilecek şekilde enbüyüklenmelidir. Tüm cevapların eş zamanlı eniyilenmesi durumunda, bunun inşaatın kalitesine yardımcı olacağına inanılmaktadır.Master Thesis Demand Forecasting Using Statistical and Machine Learning Methods – a Case Studyin Automotive Industry(İzmir Ekonomi Üniversitesi, 2023) Kayış, Ege Ak; Anagün, Ahmet SermetTalep tahmini, tedarik zincirinde önemli bir konudur. Artan rekabetçi piyasa koşullarında çeşitli nedenlere bağlı talep dalgalanmalarının da etkisiyle giderek daha fazla önem kazanmaktadır. Talep tahmini sadece geleceğin tahmin edilmesine yardımcı olmakla kalmaz, oluşabilecek risklerin azaltılmasına ve fırsatların değerlendirilmesine olanak sağlar. Bu çalışmada, otomotiv sektöründe faaliyet gösteren bir firmanın satış hacmi yüksek olan ürünlerine yönelik haftalık talep tahminine odaklanılmaktadır. Çalışmanın amacı literatürdeki zaman serisi tahmini çalışmalarında sıklıkla kullanılan farklı yaklaşımların performanslarını karşılaştırmaktır. Çalışmada istatistiksel yöntemler olarak Üstel Düzeltme, Mevsimsel Ayrıştırma, ARIMA, makine öğrenmesi yöntemleri olarak Rastgele Orman, Yapay Sinir Ağı (Çok Katmanlı Algılayıcılar), Destek Vektörü Regresyon, Ardışık Minimal Optimizasyon Regresyon uygulanmıştır. Yöntemlerin performansları Ortalama Mutlak Hata (MAE) ve Ortalama Kare Hatanın Kökü (RMSE) ile değerlendirildi. İstatistiksel yöntemler için mevsimsel ayrıştırmanın (toplama modeli), makine öğrenmesi yöntemleri için rastgele ormanın minimum MAE ve RMSE değerlerini sağladığı gözlemlenmiştir. Rastsal orman, uygulanan tüm yöntemler arasında MAE için 4.699,29 ve RMSE için 6.139,28 ile en iyi performansa sahiptir.