İşletme Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/403

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Citation - Scopus: 5
A Research on Corporate Enterprise Resource Planning (ERP) Systems used for Supermarket Supply Chain Inventory Management in Turkey
(EuroJournals, Inc., 2009) Belbaǧ, S.; Tarım, Şule; Çimen, M.; Tarim, S.; Taş, A.; 29252; Çankaya Meslek Yüksekokulu
The purpose of this study is to draw a detailed picture of the current situation with regard to supply chain inventory planning systems used in the Turkish retail sector. During the study, companies developing enterprise resource planning (ERP) software were contacted and asked questions oriented to reveal the contribution of current enterprise resource planning software in supply chain management and the opportunities they offer to users in terms of inventory planning. Interviews were made using one or more of the interview techniques of electronic mail, telephone or one-to-one interview. Through these interviews, it was attempted to determine the estimation and planning capabilities of the existing ERP software and draw an inventory of the solutions currently offered to users that will meet the varying demands of the companies operating in the retail sector. In addition, a comparison of the ERP products of national and foreign software companies producing solutions with various functionalities for the retail sector is made along with an evaluation in view of enterprise management. © EuroJournals Publishing, Inc. 2009.
Citation - WoS: 3
Assessment of cluster potential and decision making criterion in the textile and apparel sector using the Analytic Hierarchy Process (AHP)
(Academic Journals, 2011) Aluftekin, Nilay; Tas, Aysegul; Yuksel, Oznur; Cakar, Gulsen Erenler; Bayraktar, Fatma; 29252; 7239
In this study, the potential of specific-sector clustering and the relevant decision-making criteria are identified for 10 provinces of Turkey based on the clustering approach and using the Analytic Hierarchy Process (AHP) and through one-to-one interviews and surveys administered on 2,327 firms active in the textile and apparel sector. When identifying this potential, the clustering tendencies of companies with input-output relations and included in the value chain were also used in addition to survey data. At the end of the study, according to the data obtained through the AHP and the surveys held in 10 provinces, two provinces came to fore, meeting the highest number of criteria in terms of clustering potential. These are the provinces of Istanbul and Gaziantep. The provinces of Izmir and Bursa were identified as being closer to having a clustering potential compared to other provinces. In addition, it is expected that this study will make a significant contribution to literature as this study uses the AHP method for the first time in identifying the potential of clustering.
Citation - Scopus: 3
Decision analysis on criteria that affect design of reverse logistic systems in textile sector
(Chamber of Textile Engineers, 2018) Güzel, B.; Taş, A.; 29252
In this study, reverse logistics implementation is examined in terms of the textile industry. This study examines textile recycling activities and textile wastes that are used in these activities and it also contains information and suggestions on the situation of textile wastes that are not used in recycling activities. The analysis chapter of this study determines the criteria which affect the decisions and activities of companies that carry out textile recycling. The sectoral order of the importance of these criteria, which have been determined as a result of literary research and expert opinions, was maintained by using AHP and DEMATEL multi-criteria decision making techniques. The study also examines the measurements affecting the decisions and activities of companies working in the textile recycling industry and it contains the order of the importance of these measurements, analyzed by using AHP and DEMATEL multi-criteria decision making methods. © 2012.
Citation - WoS: 4
Citation - Scopus: 3
Fixed Point Results Via Simulation Functions in the Context of Quasi-Metric Space
(Univ Nis, Fac Sci Math, 2018) Fulga, Andreea; Tas, Aysegul; 29252
In this paper, we investigate the existing non-unique fixed points of certain mappings, via simulation functions in the context of quasi-metric space. Our main results generalize and unify several existing results on the topic in the literature.
Key Factors for Student Recruitment: The Issue of University Branding
(2012) Taş, Ayşegül; Akagün Ergin, Elif; 29252; 120408
Considering the number of universities and the size of the young population targeted for higher education in Turkey, there is an urgent need for further research studies on university branding efforts. The aim of this exploratory research study is to explore specific factors/criteria that Turkish students consider during the process of selecting a graduate degree program at a university in the USA and to contribute to the limited research in the area of university branding. The Analytic Hierarchy Process (AHP), which is a structured technique for analyzing complex, multi-criteria decisions, has been used for this research. Surveys were applied to students in order to discover specific factors/criteria that Turkish students employ during the process of selecting a graduate degree program at a university in the USA. In this study, there are many decision-criterias that need to be taken into consideration and each criterion must be analyzed with respect to a specific university. The in-depth interviews with professors/education counselors, student survey applications, and the analysis of previous stream of related research has led to identification of criterias to be used in the study. Following the pairwise comparisons, a survey has been designed to assess the relative superiority of the 12-criteria in the model. The most prominent criteria during the process of selecting a graduate degree program was reported as “Post Graduation Job and Career Prospects”. The findings of this study can be used to support those who have the intention to develop a successful university brand.
Logistics Location Selection In Migration Management: An Analysis Of Aegean Region
(2021) Ergör, Zeynep Birce; Ergor, Zeynep Birce; Tas, Aysegul; Yılmaz, Levent; 29252; 56571; İşletme
Türkiye coğrafi konumu gereği önemli göç rotaları üzerinde bulunan bir ülkedir. Özellikle son yıllarda artan göç eden insan sayısındaki yoğunluk, Türkiye’deki göç olgusunun farklı yönlerden ele alınarak etkin bir şekilde yönetilmesini gerekli kılmıştır. Bu bağlamda, göç yönetiminde lojistik konum seçimi, önem arz eden konuların başında gelmektedir. Göç yönetiminin sürdürülebilirliği, operasyonel destek faaliyetlerin yürütülmesi ile doğrudan ilişkilidir. Destek faaliyetleri sadece sağlam zemine sahip bir lojistik yapı üzerine inşa edilebilir. Mevcut kaynakların verimli ve etkin kullanımı organizasyon yapısını güçlendirir ve aynı zamanda bu yapı içindeki personeli motive ve teşvik eder, bu da yönetimi güçlendirir. Bu çalışmada, Ege Bölgesi’nde göç yönetiminde operasyonel faaliyetlerin sürdürülmesi konusunda önem taşıyan lojistik desteği sağlamak amacıyla kurulabilecek bir lojistik tesisin yer seçimi sorununa yönelik çözüm önerisi sunulmaktadır. Çalışmada öncelikle Analitik Hiyerarşi Süreci (AHS) yöntemi kullanılarak lojistik yer seçimi kriterleri sıralanmıştır. Ardından, sıralanan kriterler doğrultusunda, MULTIMOORA tekniği kullanılarak lojistik yerler belirlenmiştir.
Citation - WoS: 4
Citation - Scopus: 4
Note on common fixed point theorems in convex metric spaces
(Mdpi, 2021) Kumar, Anil; Tas, Aysegul; 29252
In the present paper, we pointed out that there is a gap in the proof of the main result of Rouzkard et al. (The Bulletin of the Belgian Mathematical Society 2012). Then after, utilizing the concept of (E.A.) property in convex metric space, we obtained an alternative and correct version of this result. Finally, it is clarified that in the theory of common fixed point, the notion of (E.A.) property in the set up of convex metric space develops some new dimensions in comparison to the hypothesis that a range set of one map is contained in the range set of another map.
Citation - Scopus: 8
On double controlled metric-like spaces and related fixed point theorems
(Erdal Karapinar, 2021) Tas, A.; 29252
In this paper, we generalize the fixed point theorem given in Mlaiki et al [Journal of Inequalities and Applications (2020) 2020:63] using the concept of double controlled metric-like spaces. Some examples are given here to illustrate the usability of the obtained results. © 2021, Erdal Karapinar. All rights reserved.
Citation - WoS: 4
Citation - Scopus: 5
Tackling service quality in the telecommunication B2B market
(Emerald Group Publishing Ltd, 2019) Tas, Aysegul; Ergin, Elif Akagun; Kurtulmusoglu, Feride Bahar; Sahin, Omer Faruk; 29252; 120408
Purpose This study will attempt to focus on how vendors serve operators, as operator service quality starts with vendor's technology infrastructure and service quality. The purpose of this study is to exhibit the most important vendor service quality items and dimensions for the operators in the telecommunications industry. Design/methodology/approach A total of 268 employees from various age groups, cities, job levels and departments participated in the survey. Findings Expected service quality results indicated that operators need high service quality. When telecommunication needs of subscribers are taken into account, it is normal for operators to expect high service quality from vendors. Results also reveal that being dependable and providing continuous support are critical for the telecommunications industry. Perceived service quality results demonstrate that customer expectations failed to be satisfied. In this study conducted in the telecommunications market, the expectations of operator employees regarding vendors is shaped under two dimensions. These dimensions are employee and service center features and provider timeliness and accuracy. When Topsis method was used to determine the most important vendor characteristics, timeliness and trust were identified as the top two criteria. Originality/value To the best of the authors' knowledge, this study is the first to put forth the most important vendor service quality items and dimensions for the operators in the telecommunications industry.
Tekstil Sektöründe Tersine Lojistik Sistemlerinin Tasarımını Etkileyen Kriterlere İlişkin Bir Karar Analizi
(2018) Güzel, Barış; Taş, Ayşegül; 29252
Bu çalışmada tersine lojistik uygulaması, tekstil sektörü açısından incelenmektedir. Tekstil sektöründe tersine lojistik uygulamalarının Türkiye’de hangi düzeyde, hangi bilinç ile uygulandığı, uygulamada hangi atık tiplerinin kullanıldığı ve kullanılmadığı araştırılmaktadır. Çalışmanın analiz bölümünde, tekstil geri dönüşümü faaliyetleri içerisinde olan işletmelerin kararlarını ve faaliyetlerini etkileyen kriterler belirlenmiştir. Literatür araştırması ve uzman görüşleri sonucu belirlenen bu kriterlerin AHP ve DEMATEL çok kriterli karar verme teknikleri kullanılarak sektörel önem sıralamaları elde edilmiştir.
Citation - WoS: 16
Citation - Scopus: 13
Wavelet transform and artificial neutral network for the quantitative resolution of ternary mixtures
(Revista Chimie Srl, 2006) Dinc, Erdal; Baleanu, Dumitru; Baleanu, Dumitru; Tas, Aysegul; 56389; 29252; Matematik
Two different approaches continuous wavelet transform (CWT) and artificial neural network (ANN) were successfully applied to the quantitative resolution of ternary mixtures of paracetamol (PAR), metamizol (MET) and caffeine (CA) having strongly overlapping spectra. First approach is based on the use of CWT signals of the ratio spectra of three active compounds in samples. Various CWT families were tested for the extraction of cardinal information and small noise condition and higher peaks of the original spectra. In this paper, three methods: Mexican hat function (MEX) (a = 70), reverse biorthogonal (RBIO3.5) (a = 100) and biorthogonal (BIOR2.4) (a = 90) were found suitable for determination of three active compounds and their signal analysis. ANN, as a multivariate numerical method, was used for the quantitative resolution of the same ternary mixtures. The performance of CWT and ANN approaches was validated by analyzing the synthetic mixtures of PAR, MET and CA compounds. In addition, the standard addition technique was also used for the same purpose. The experimental results provided by CWT technique were compared with each other and those obtained by ANN method and a coincidence was observed for all the obtained results.
Yazılım Sektöründe Nitelikli Personel Seçiminin Nötrosofik AHP ve TOPSİS Yöntemleri İle İncelenmesi
(2021) Karataş, Pembegül Çetiner; Tas, Aysegul; 29252
Amaç- Çalışmanın temel amacı, insan kaynakları yönetiminde firma performansına etki eden nitelikli personel seçimi için gerekli kriterlerin (niteliklerin) belirlenerek, bu kriterler altında başvuran adaylardan en uygun olanın belirlenmesi ve seçilmesidir. Ayrıca etkili ve kısa sürede sıralamanın yapılması için bir yöntem sunulmaktadır.Yöntem- Araştırmada kullanılan veriler, yazılım sektöründe yer alan 5 firmada çalışan 15 insan kaynakları uzamanı ve yöneticileri ile yapılan yüz yüze görüşmeler ve literatür taraması ile elde edilmiştir. Elde edilen veriler aralık değerli nötrosofik AHP yöntemi kullanılarak personel seçimine yönelik adaylarda aranacak kriterler sıralanmıştır. Daha sonra bu kriterlerin ağırlıkları nötrosofik TOPSIS yöntemi ile analiz edilerek proje yöneticisi olarak bavurana adaylar sıralanmaya çalışılmıştır. Bulgular- Kriter sıralaması sonucuna göre personel seçiminde yer alması gereken en önemli kriter 0,4900912 değeri ile “Eğitim Düzeyi” olarak karşımıza çıkmaktadır. Bu kriteri, sırasıyla “Yazılım Tecrübesi”, “Yabancı Dil”, “Kişisel Özellikler” ve “Sahip olunan Sertifikalar” izlemektedir. Daha sonra belirlenen bir yazılım firması için, aralıklı nötrosofik TOPSIS yöntemi kullanılarak, proje yöneticisi belirlenmiş ve adaylar; Aday2> Aday1> Aday3> Aday4 şeklinde sıralanmıştır.Tartışma- Yazılım ve bilişim alanında yer alan firmalar için en doğru ve en uygun personelin belirlenmesi firma başarısı ve sürdürülebilirliği açısından büyük önem taşımaktadır. Karar vericilerin klasik yaklaşımları kullanarak belirsizlik altında güvenilir tespitler yapması pek kolay olmamaktadır. Kullanılan aralık değerli nötrosofik yöntemler, özellikle adayların değerlendirilmesinde ağırlıklandırılan özelliklerin net değerler ile ifade edilemediği durumlarda oldukça başarılı olmaktadır. Ayrıca çalışma sırasında insan kaynakları ile yaptığımız görüşmelerde, insan kaynakları biriminin farklı mülakatlar ile adayı belirlemesi yerine, kullandığımız teknikler ile çok daha kısa sürede ve etkili olarak sıralanabildiği sonucuna varılmıştır.

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