İşletme Bölümü Yayın Koleksiyonu

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

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Now showing 1 - 10 of 26
  • Conference Object
    Citation - WoS: 2
    Examining Immigrant Turkish Household Food Consumption: Consumer Insights for Food Acculturation Models
    (Assoc Consumer Research, 2010) Ergin, Elif Akagun; Kaufman-Scarborough, Carol
  • Conference Object
    The Effect of Knowledge Economy on Organizational Environments: Do the Governance Mechanisms Differ According To Institutional and Technical Environments
    (int Business information Management Assoc-ibima, 2009) Sener, Irge; Şener, İrge; İşletme
    Technological developments result in important changes for organizations and their environment. The most remarkable change in the organizational field is the widespread usage of Internet, a new information and communication technology (ICT). The changes depending on Internet, affect organizational structures, since they are designed compatible to the communication needs dependent on the technology. In some cases, however, the communication technologies can be developed in consistence with the organizational structure. This indicates that, when ICTs are taken into consideration, it occurs that there is no clear distinction between technical and institutional organizational environments. The ICTs dependent on Internet is both a legitimacy source for the organizations and an efficiency tool. Accordingly, in this study it is considered that the technical and institutional environments are interpenetrated and different types of governance mechanisms result due to the varying effects of the environmental pressures. Testable propositions are developed for different types of environments.
  • Conference Object
  • Conference Object
    Citation - Scopus: 4
    Robust Principal Component Analysis by Reverse Iterative Linear Programming
    (Springer Verlag, 2016) Visentin, A.; Prestwich, S.; Armagan Tarim, S.
    Principal Components Analysis (PCA) is a data analysis technique widely used in dimensionality reduction. It extracts a small number of orthonormal vectors that explain most of the variation in a dataset, which are called the Principal Components. Conventional PCA is sensitive to outliers because it is based on the L2-norm, so to improve robustness several algorithms based on the L1-norm have been introduced in the literature. We present a new algorithm for robust L1- norm PCA that computes components iteratively in reverse, using a new heuristic based on Linear Programming. This solution is focused on finding the projection that minimizes the variance of the projected points. It has only one parameter to tune, making it simple to use. On common benchmarks it performs competitively compared to other methods. The data and software related to this paper are available at https://github. com/visentin-insight/L1-PCAhp. © Springer International Publishing AG 2016.
  • Conference Object
  • Conference Object
    Öz yazma: süreç ve ilkeleri
    (2006) Dener, Hasan Işın; Yıldızeli, Aytaç
  • Conference Object
    Kavramsal Dizin Yapısı ve Oluşturulması Üzerine
    (2007) Dener, Hasan Işın
  • Conference Object
    Etik Liderliğin Etik İklime, Birey ve Örgüt Performansına Etkileri
    (2012) Elçi, Meral; Şener, İrge; Aksoy Kürü, Seval
    Etik liderler, ahlaki bakımdan örnek oluşturarak, çalışanların davranışlarını etkilerler. Etik liderlik, birçok araştırmacı tarafından oldukça önemli bir kavram olarak değerlendirilmesine rağmen, Türkiye’de etik liderler ile ilgili araştırma sayısı sınırlıdır. Bu araştırmada, etik liderlik davranışının sonuçları üzerine odaklanılarak; etik iklim, çalışanların iş performansları ve örgüt performansı üzerindeki etkileri incelenmiştir. Araştırmanın örneklemini, üç ilde, beş farklı sektörde faaliyet gösteren 50 örgütte çalışan 422 personel ve orta düzey yöneticiler oluşturmaktadır. Araştırmanın bulguları, çalışanların iş performansının, örgüt performansı üzerinde en fazla etkiye sahip bulunduğunu; iş performansı üzerinde ise en fazla etkinin etik liderlikten kaynaklandığını göstermektedir. Araştırma ile ayrıca etik liderliğin etik iklime önemli bir etkisinin olduğu bulgulanmıştır.
  • Conference Object
    Consumers Purchase Intentions For Foreign Products: An Empirical Research Study In Istanbul, Turkey
    (2010) Akagün Ergin, Elif
    Consumers in developing countries seem to possess an increasing demand for the purchase of foreign products. Turkey is a magnet for multinational corporations that view the country as a must-win market. It has become important to determine the underlying intentions that drive the purchase decisions for foreign products in the Turkish market. The purpose of this study is to contribute to the literature by examining the purchase intentions of urban, Turkish consumers for foreign products in three specific categories (apparel, chocolate and personal care products). These categories were selected by taking their applicability to urban consumers into consideration. A field study was carried out at three major shopping malls in Istanbul, with the participation of 600 urban, Turkish consumers. Surveys, consisting of 3 parts and a total of 50 questions, have been used to gather data. In the first part, the subjects were asked about the factors that affect their purchasing motives. The top five factors were reported as perceived brand prestige, quality, value, purchase intention, and influence of others. In the second part, questions were asked regarding the subject’s reactions about foreign brands according to the determined categories. Finally in the third part, the participants were asked about their demographics and other personal factors. The empirical evidence provides insights into the significance of impact of product category, perceived brand prestige, perceived brand quality and influence of others. The results of the multi-linear regression analysis are reported along with significant implications for marketing managers
  • Conference Object
    Citation - WoS: 2
    Citation - Scopus: 2
    Sustainable Closed-Loop Supply Chain Network Design and Optimization
    (Springer Nature Switzerland Ag, 2022) Yozgat, Simge; Erol, Serpil
    The sustainability conception encompasses a wide range from economy to environment and society. Sustainable supply chains, when managed with the right strategies, will ensure several advantages for all collaborators in the chain. With the increasing consumer awareness, the studies conducted in recent years focus on the environmental and social dimensions as well as the economic factor of sustainability. Sustainability factors; "environmental, economic and social" also known as three pillars of sustainability are considered together in order to increase the benefits offered by the sustainable supply chain. In this study, closed-loop supply chain themed studies that deal with three pillars of sustainability in the literature were examined based on sub-factors. Studies have shown that, Life Cycle Analysis (LCA) methods such as ReCipe, Eco-Indicator 99 and CO2 emission are the approaches used to determine the environmental factors of sustainability. Cost, profit and Net Present Value (NPV) methods are used to measure the economic dimension of sustainability. Job opportunities, losses and Customer Service Level (CSL) are most commonly used as sub-criteria to determine social factors. Accordingly, a sustainable closed-loop supply chain model consisting of seven echelons has been examined. A deterministic mixed integer linear programming model (MILP), which includes the economic dimension of sustainability, has been developed and enclosed with sample solutions. Suggestions for sustainability criteria and improving the proposed model have been made for future studies.