İşletme Bölümü Yayın Koleksiyonu
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Browsing İşletme Bölümü Yayın Koleksiyonu by Department "Çankaya University"
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Book Part Citation - Scopus: 1A Content Analysis of Sustainable Development in the Tourism Literature(Taylor and Francis, 2019) Arzu Kalemci, R.; 42537This study examines what fundamental issues are addressed in the tourism literature for defining sustainable development. By adopting a descriptive approach with a content analysis, 221 articles with the keywords “sustainable development” in their titles are analyzed in the current study. This study argues that although developmental and environmental dynamics is crucial, however, organizational dynamics of sustainable development should also be emphasized in the tourism literature. This study also shows that sustainability for companies operating in the tourism sector has a legitimating effect both at the organizational level and within the organization. © 2020 selection and editorial matter, Ipek Kalemci Tüzün, Mehmet Ergül and Colin Johnson; individual chapters, the contributors.Article Citation - WoS: 1Citation - Scopus: 2A new causal discovery heuristic(Springer, 2018) Prestwich, S. D.; Özkan, İbrahim; Tarim, S. A.; Ozkan, I.; 6641; 169580; Yönetim Bilişim SistemleriProbabilistic methods for causal discovery are based on the detection of patterns of correlation between variables. They are based on statistical theory and have revolutionised the study of causality. However, when correlation itself is unreliable, so are probabilistic methods: unusual data can lead to spurious causal links, while nonmonotonic functional relationships between variables can prevent the detection of causal links. We describe a new heuristic method for inferring causality between two continuous variables, based on randomness and unimodality tests and making few assumptions about the data. We evaluate the method against probabilistic and additive noise algorithms on real and artificial datasets, and show that it performs competitively.Article Citation - Scopus: 0A New Clustering Method With Fuzzy Approach Based On Takagi-Sugeno Model in Queuing Systems(IGI Global, 2013) Zanjanbar, F.G.; Şentarli, I.In this paper, the authors propose a new hard clustering method to provide objective knowledge on field of fuzzy queuing system. In this method, locally linear controllers are extracted and translated into the first-order Takagi-Sugeno rule base fuzzy model. In this extraction process, the region of fuzzy subspaces of available inputs corresponding to different implications is used to obtain the clusters of outputs of the queuing system. Then, the multiple regression functions associated with these separate clusters are used to interpret the performance of queuing systems. An application of the method also is presented and the performance of the queuing system is discussed. Copyright © 2013, IGI Global.Article Citation - Scopus: 5A 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 YüksekokuluThe 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.Article Citation - Scopus: 2Advertising Ethics: A Field Study On Turkish Consumers(2007) Ergin, E.A.; Ozdemir, H.; 120408This study examines whether use of deception in ads, cultural stereotyping, sexual stereotyping, and emotional exploitation factors have an influence on the Turkish consumers. Specifically, the aim is to discover whether each of these four factors have any impact on the consumers ' recall of the ad and subsequent purchasing decisions. The results of this study should help foreign and domestic advertising agencies and their clients, already existing in or planning to enter the Turkish market, in understanding the Turkish consumers better.Article Algılanan Çalışma Koşullarının İşten Ayrılma Niyeti ile Tükenmişliğe Etkisi: Gıda Perakendeciliği Çalışanlarına Yönelik Bir Araştırma(2022) Kılıç, Tamer; Kılıç, Tamer; Şener, İrge; Şener, İrge; 21583; Çankaya Meslek Yüksekokulu; İşletmeİş yaşamı ile ilgili yapılan çok sayıdaki araştırmada çalışma koşullarının çalışanlar üzerindeki etkileri incelenmiştir. Çalışma koşulları uzun süreli ve yoğun çalışma nedeniyle günümüzde de önemini korumaktadır. Bu çalışmada, Ankara’da gıda perakendeciliği alanında faaliyet gösteren bir işletmenin 196 çalışanını kapsayan örneklem için çalışma koşullarının çalışanların işten ayrılma niyetleri üzerindeki etkisi ile bu değişkenler arasındaki ilişkide çalışanların tükenmişlik seviyelerinin aracılık etkisi incelenmiştir. Uygulanan anket çalışmasından elde edilen bulgulara göre; çalışma koşullarının ‘yoğun fiziksel çaba gerektiren koşullar’ boyutunun çalışanların hem işten ayrılma niyetlerini hem de tükenmişliklerini etkilediği; ‘ergonomik olmayan koşullar’ ile ‘monotonlaşma’ boyutlarının ise çalışanların işten ayrılma niyeti üzerinde pozitif etkisinin olduğu belirlenmiştir. Çalışanların çalışma koşulları algıları ile işten ayrılma niyetleri arasındaki ilişkide tükenmişlik seviyelerinin aracılık etkisi tespit edilmemiştir.Article Alman Örgüt Kültürü: Hofstede’nin Kültür Boyutları, Alman Tarzı Yönetim ve İnsan Kaynakları Yönetimi Açısından Bir Değerlendirme(2020) Tunc, Tulin; Parıltı, Nurettin; 138931Dünyaca ünlü markaları, ‘Made in Germany’ kalitesine duyulan güven, planlama, verimlilik, inovasyon,uzmanlık ve teknik yeteneklere dayalı katı yönetim yaklaşımı ile ön plana çıkan Almanya, güçlü ekonomisiolan, etkili bir Avrupa ülkesidir. Alman kültürü, tarihsel arka plandan etkilenmektedir. Ayrıca, 2.DünyaSavaşı sonrası artan işgücü ihtiyacı nedeniyle yapılan göçmen iş gören alımları dolayısıyla hem toplumhem de iş yaşamında çok kültürlülük de söz konusudur. Böyle bir bağlamda, Alman iş örgütleri ve örgütkültürü nasıl şekillenmiştir?Almanya’nın tarihsel gelişimi bağlamında ulusal kültürün örgüt kültürüne etkilerini ve yönetim, istihdamve insan kaynakları yönetimi uygulamalarına yansımalarını değerlendirmeyi amaçlayan bu derlemeçalışmasında, ulusal kültürel boyutların Alman örgüt kültürünü etkilediği belirlenmiştir. Bir diğer bulgu,önemli tarihsel dönemlerde yaşanan olayların kültür, istihdam, yönetim ve insan kaynakları yönetimiüzerinde etkili olduğu yönündedir.Article Citation - WoS: 19Citation - Scopus: 21An Extended Mixed-Integer Programming Formulation and Dynamic Cut Generation Approach for the Stochastic Lot-Sizing Problem(informs, 2018) Tunc, Huseyin; Kilic, Onur A.; Tarim, S. Armagan; Rossi, Roberto; 6641We present an extended mixed-integer programming formulation of the stochastic lot-sizing problem for the static-dynamic uncertainty strategy. The proposed formulation is significantly more time efficient as compared to existing formulations in the literature and it can handle variants of the stochastic lot-sizing problem characterized by penalty costs and service level constraints, as well as backorders and lost sales. Also, besides being capable of working with a predefined piecewise linear approximation of the cost function-as is the case in earlier formulations-it has the functionality of finding an optimal cost solution with an arbitrary level of precision by means of a novel dynamic cut generation approach.Conference Object Citation - WoS: 12Citation - Scopus: 16An overview of revenue management and dynamic pricing models in hotel business(Edp Sciences S A, 2018) Bandalouski, Andrei M.; Kovalyov, Mikhail Y.; Pesch, Erwin; Tarim, S. Armagan; 6641Basic concepts and brief description of revenue management models and decision tools in the hotel business are presented. An overview of the relevant literature on dynamic pricing, forecasting methods and optimization models is provided. The main ideas of the authors' customized revenue management method for the hotel business are presented.Conference Object Citation - WoS: 0ANALYZING THE EFFECT OF ANTECEDENTS OF TURNOVER INTENTION ACCORDING TO GENERATIONS(Future Acad, 2019) Şener, İrge; Karabay, Melisa Erdilek; Seiler, Irge; Elci, Meral; Ensari, Sebnem; 21583; İşletmeThere are many predictors that determine the turnover intention of employees. Among these predictors, mobbing behaviour can be disruptive in the workplace since workplace deviance is a matter which most organizations wrestle today. Organizational commitment is an important variant for employees to achieve organizational success whereas ethical climate is the picture of an organization which demonstrates its' moral philosophy. This study examines the main effects of ethical climate, mobbing, and organizational commitment in predicting turnover intention among the sample of 166 employees, working in a municipality, particularly in Istanbul province, Turkey. The findings indicate that mobbing affect turnover intention positively, while ethical climate has no effect in estimating turnover intention. Study results also suggest that commitment (continuance and affective) is also found to be negatively related to turnover intention of employees. In addition, for Generation-X members, continuance commitment and for Generation-Y members, affective commitment has a significant effect on turnover intention. (C) 2019 Published by Future Academy www.FutureAcademy.org .UKArticle Citation - WoS: 3Assessment 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; 7239In 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.Article Bilgi sarmalı çerçevesinde süreçlerin karşılıklı etkileşimi üzerine bir araştırma(2021) Sakarya, Arif Orçun; Sakarya, Arif Orçun; 19342; İşletmeGünümüzde bilgi yönetimi işletmelerin rekabet güçlerinin artırılması yönünde odaklanılan\rkonulardan biridir. Özellikle dinamik çevre ile etkileşim sırasında bilginin şekillenmesi noktasında,\rbilginin dönüşümü ve kullanılma amacı da işletme performansına etki edebilecek olgular olarak\rortaya çıkmaktadır. Buna bağlı olarak, çalışmanın amacı, mikro ölçekli işletmelerde sarmal bazlı bilgi\ryönetimi ve yaratılması için uygun şartların oluşup oluşmadığının ölçülmesidir. İlgili literatür ve bilgi\ryönetimine farklı yaklaşımların incelenmesini takiben, çalışmanın araştırma bölümünde ise bir\rüniversitenin kuluçka merkezi bünyesinde bulunan ve bilgi yoğun ürün veya hizmet üreten mikro\rölçekli işletmelerin ile yapılan görüşmelerin sonuçları tartışılmıştır. Buna göre, işletmenin dahilinde\rbilginin yaratılması için gerekli şartları büyük ölçüde sağladıkları sonucuna ulaşılmıştır. Bu bağlamda\rözellikle ortak karar alma mekanizması, proje bazlı çalışma, inovasyon, birden fazla işte yetkinleşme\rve bilgiye erişim olgularının ön plana çıktığı görülmüştür. Bunlara ek olarak da özellikle bilginin\rdönüştürülmesi çerçevesinde piyasa odaklı yaklaşımların da şirketlerin gündeminde olduğu\rgözlemlenmiştir.Conference Object Citation - WoS: 13Board Composition and Gender Diversity: Comparison of Turkish and Nigerian Listed Companies(Elsevier Science Bv, 2014) Sener, Irge; Şener, İrge; Karaye, Abubakar Balarabe; 21583; İşletmeThe research related with board of directors is an important research stream. One of the most noteworthy dimensions related with board composition is board gender diversity. Although, many research is undertaken in developed countries related with board gender diversity, related research is still at infancy in developing and emerging market economies. This study aims to contribute to the literature by comparison of important board composition dimensions, that are board gender diversity, presence of independent directors and board size between Turkey and Nigeria. The findings indicate no statistically significant difference between the two countries in terms of board gender diversity and underrepresentation of female directors. According to the research findings, the underrepresentation of female directors is more obvious in Turkey. On the other hand, there exists statistically significant difference in terms of board size and presence of independent board members among the two countries. (C) 2014 The Authors. Published by Elsevier Ltd.Conference Object Citation - WoS: 1Citation - Scopus: 11Board Composition and Organizational Performance: Environmental Characteristics Matter(Elsevier Science Bv, 2011) Sener, Irge; Şener, İrge; Varoglu, Abdulkadir; Aren, Selim; 21583; İşletmeConcern for board of directors considerably increased with the recent developments in the corporate governance field. Despite that extensive research was conducted, the understanding of the board and its effects is still limited. This is mainly because that the majority of the corporate governance research focused mostly on the direct relation of board characteristics with organizational outcomes, and neglected the effect of intervening variables, leading to inconclusive research findings. Deriving on this limitation, in this study, the effect of board composition on organizational performance was investigated for different environmental conditions, which are measured in terms of munificence and dynamism of the industry in which the organizations operate and product complexity of the organizations. In addition, the moderating effects of these dimensions of organizational task environments on the relationship between board composition and organizational performance were also addressed. Building on resource dependence theory, it is suggested that under different environmental conditions, different compositions of boards will positively influence organizational performance. Based on the data from 80 companies which shares are publicly traded in Istanbul Stock Exchange, the findings indicate that the effect of board composition on organizational performance vary among different environmental conditions. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility 7th International Strategic Management ConferenceConference Object Citation - WoS: 2Citation - Scopus: 1Collaboration İn Bologna Process: The Experience Of Department Of Interior Architecture İn Cankaya University(Elsevier Science Bv, 2011) Sakarya, A. Orcun; Kahraman, Z. Ezgi Haliloglu; 19342Bologna Process studies in Cankaya University's Interior Design and Architecture Department have been initiated in 2008. This study analyzes the curriculum development efforts in a participatory point of view and the findings of the first stage by providing insights for the next step of the process. As a result of the consensus among professors and questionnaire, program qualifications have been identified and listed. Assessment of questionnaires conducted to students and graduates revised these qualifications. These new qualifications specifically involve the subject-specific ones related with the fundamentals of design processes, history and technical topics of interior architecture; design and construction issues. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the 2nd World Conference on Psychology, Counselling and Guidance.Article Citation - WoS: 12Complusive buying behavior tendencies: the case of Turkish consumers(Academic Journals, 2010) Ergin, Elif Akaguen; 120408Compulsive buying is a dysfunctional consumer behavior, a chronic failure to control the urge to purchase products and services. The two main goals of this study were to explore whether gender was a significant predictor of compulsive buying behavior and to determine the effect of two particular predispositional factors ( anxiety, depression) on compulsive buying. The primary data for this study was obtained from a questionnare that was administered in the capital city of Ankara. A convenience sample of three hundred and fourteen respondents participated in the study. Independent sample t - test, correlational and regression analyses were conducted for data analysis. The empirical findings showed that there are marked differences in compulsive buying tendencies of Turkish women and men, and factors such as age and anxiety are strongly related to compulsive buying behavior.Article Citation - WoS: 18Citation - Scopus: 23Computing non-stationary (s, S) policies using mixed integer linear programming(Elsevier Science Bv, 2018) Xiang, Mengyuan; Rossi, Roberto; Martin-Barragan, Belen; Tarim, S. Armagan; 6641This paper addresses the single-item single-stocking location non-stationary stochastic lot sizing problem under the (s, S) control policy. We first present a mixed integer non-linear programming (MINLP) formulation for determining near-optimal (s, S) policy parameters. To tackle larger instances, we then combine the previously introduced MINLP model and a binary search approach. These models can be reformulated as mixed integer linear programming (MILP) models which can be easily implemented and solved by using off-the-shelf optimization software. Computational experiments demonstrate that optimality gaps of these models are less than 0.3% of the optimal policy cost and computational times are reasonable. (C) 2018 Elsevier B.V. All rights reserved.Article Citation - WoS: 7Citation - Scopus: 10Confidence-based reasoning in stochastic constraint programming(Elsevier, 2015) Rossi, Roberto; Hnich, Brahim; Tarim, S. Armagan; Prestvvich, Steven; 6641In this work we introduce a novel approach, based on sampling, for finding assignments that are likely to be solutions to stochastic constraint satisfaction problems and constraint optimisation problems. Our approach reduces the size of the original problem being analysed; by solving this reduced problem, with a given confidence probability, we obtain assignments that satisfy the chance constraints in the original model within prescribed error tolerance thresholds. To achieve this, we blend concepts from stochastic constraint programming and statistics. We discuss both exact and approximate variants of our method. The framework we introduce can be immediately employed in concert with existing approaches for solving stochastic constraint programs. A thorough computational study on a number of stochastic combinatorial optimisation problems demonstrates the effectiveness of our approach. (C) 2015 Elsevier B.V. All rights reserved.Article Citation - Scopus: 3Decision analysis on criteria that affect design of reverse logistic systems in textile sector(Chamber of Textile Engineers, 2018) Güzel, B.; Taş, A.; 29252In 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.Article Citation - WoS: 68Citation - Scopus: 82Detecting stock-price manipulation in an emerging market: The case of Turkey(Pergamon-elsevier Science Ltd, 2009) Ogut, Hulisi; Doganay, M. Mete; Aktas, Ramazan; 112010; 1109This paper aims to develop methods that are capable of detecting manipulation in the Istanbul Stock Exchange. We take the difference between manipulated stock's and index's average daily return, average daily change in trading volume and average daily volatility and used these statistics as explanatory variables. The data in post-manipulation and pre-manipulation periods are used as non-manipulated instances while the data in the manipulation period are used as manipulated instances. Test performance of classification accuracy, sensitivity and specificity statistics for Artificial Neural Networks (ANN) and Support Vector Machine (SVM) are compared with the results of discriminant analysis and logistics regression (logit). We found that the data mining techniques (ANN and SVM) are better suited to detect stock-price manipulation than multivariate statistical techniques (discriminant analysis, logistics regression) as the performances of the data mining techniques in terms of total classification accuracy and sensitivity statistics are better than those of multivariate techniques. We also found that unit change in difference between average daily return of manipulated stock and the index has the largest effect while unit change in difference between average daily change in trading volume of manipulated stock and index has the least effect on multivariate classifiers' decision functions. (C) 2009 Elsevier Ltd. All rights reserved.
