İşletme Bölümü Yayın Koleksiyonu

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

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Citation - Scopus: 3
Advertising Ethics: a Field Study on Turkish Consumers
(2007) Özdemir, Handan; Ergin, E.A.; Ozdemir, H.; Halkla İlişkiler ve Reklamcılık
This 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.
Citation - WoS: 1
Citation - Scopus: 10
Board Composition and Organizational Performance: Environmental Characteristics Matter
(Elsevier Science Bv, 2011) Varoglu, Abdulkadir; Aren, Selim; Sener, Irge
Concern 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 Conference
Citation - WoS: 2
Citation - Scopus: 1
Collaboration in Bologna Process: the Experience of Department of Interior Architecture in Cankaya University
(Elsevier Science Bv, 2011) Sakarya, A. Orcun; Kahraman, Z. Ezgi Haliloglu
Bologna 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.
Citation - WoS: 18
Citation - Scopus: 23
Computing Non-Stationary (S, S) Policies Using Mixed Integer Linear Programming
(Elsevier Science Bv, 2018) Xiang, Mengyuan; Rossi, Roberto; Martin-Barragan, Belen; Tarim, S. Armagan
This 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.
Citation - WoS: 9
Citation - Scopus: 11
Confidence-Based Reasoning in Stochastic Constraint Programming
(Elsevier, 2015) Rossi, Roberto; Hnich, Brahim; Tarim, S. Armagan; Prestvvich, Steven
In 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.
Citation - Scopus: 1
A Content Analysis of Sustainable Development in the Tourism Literature
(Taylor and Francis, 2019) Arzu Kalemci, R.
This 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.
Citation - Scopus: 3
Corporate Sustainability: the Use of Esg Scores in Finance Research
(IGI Global, 2023) Yilmaz, I.S.; Usul, N.
This chapter presents an overview of sustainable finance literature focusing on studies using environmental, social and governance (ESG) practices, and conducts a descriptive and comparative analysis of the Refinitiv ESG database worldwide. With increasing interest in ESG investing, it is common to integrate ESG factors into portfolio decisions. The authors first address the relevant literature to .set the background for further studies. The chapter documents an increasing trend in ESG reporting and points out differences in ESG scores in terms of development level, region, industry, and legal origin for the period 2002-2019. Theoretical models and empirical tests, which integrate ESG factors into corporate performance, can only be established by a better understanding of ESG databases. Therefore, further research in the Refinitiv ESG database, as well as other ESG databases, is significant. This chapter contributes to this stream of research by explaining the Refinitiv ESG database with descriptive and comparative analysis, paving the way for new research on the subject. © 2023, IGI Global. All rights reserved.
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.
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: 97
Citation - Scopus: 119
The Degree of Financial Liberalization and Aggregated Stock-Return Volatility in Emerging Markets
(Elsevier Science Bv, 2010) Akdeniz, Levent; Altay-Salih, Aslihan; Umutlu, Mehmet
In this study, we address whether the degree of financial liberalization affects the aggregated total volatility of stock returns by considering the time-varying nature of financial liberalization. We also explore channels through which the degree of financial liberalization impacts aggregated total volatility. We document a negative relation to the degree of financial liberalization after controlling for size, liquidity, country. and crisis effects, especially for small and medium-sized markets. Moreover, the degree of financial liberalization transmits its negative impact on aggregated total volatility through aggregated idiosyncratic and local volatilities. Overall, our results provide evidence in favor of the view that the broadening of the investor base due to the increasing degree of financial liberalization causes a reduction in the total volatility of stock returns. (C) 2009 Elsevier B.V. All rights reserved.
Citation - WoS: 70
Citation - Scopus: 86
Detecting Stock-Price Manipulation in an Emerging Market: the Case of Turkey
(Pergamon-elsevier Science Ltd, 2009) Ogut, Hulisi; Doganay, M. Mete; Aktas, Ramazan
This 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.
Citation - WoS: 1
Citation - Scopus: 1
The Determination of Socio-Economic Factors Affecting Student Success by Data Mining Methods
(Ieee, 2013) Atalay, Veli; Ustun, Suleyman; Bulbul, Selin
The success of socio-economic level on students is a fact. The economic level and conditions combined with the student's potential make itself felt at the ultimate level. In this research, it was established that success and socio-economic factors which can attract the attention are effectively observed on particularly female students. It was ensured that a real and sound socio-economic criteria for success be determined by evaluating success and failure at terminal points. Decision trees and chi-square test were used in the implementation.
Citation - WoS: 8
Citation - Scopus: 6
Does Adr Listing Affect the Dynamics of Volatility in Emerging Markets
(Charles Univ-prague, 2010) Umutlu, Mehmet; Umutlu, Mehmet; Altay-Salih, Aslihan; Akdeniz, Levent; İşletme
This paper analyzes the time-series variation in the return volatility of non-US stocks from emerging markets that are cross-listed on US exchanges. Unlike previous studies in the cross-listing literature, return volatility is modeled using conditional heteroscedaslicity models. We find that firms' exposure to risks such as local and global market betas remain unchanged after cross-listing. Moreover, we do not identify notable changes in the dynamics of the volatility of cross-listed stocks after cross-listing except for leverage effects. We further show that the mean level of conditional variance is not affected after cross-listing. Thus, our results provide counter-evidence to the belief that foreign investor participation drives volatility upward.
Citation - WoS: 7
Citation - Scopus: 8
Does Workplace Envy Always Have Detrimental Consequences in Organizations? a Study of Public and Private Sector Employees
(Emerald Group Publishing Ltd, 2022) Karabay, Melisa Erdilek; Elci, Meral; Erman, Halil; Sener, Irge
Purpose Based on the situational approach for envy, the purpose of this paper is to examine the effect of two-dimensional workplace envy (being envied and envying others) on the task and contextual performance of employees working in either private or public sector organizations. Design/methodology/approach This study was conducted on survey data collected from 988 private sector employees and 530 employees from the public sector employed in Istanbul. Following a quantitative empirical design, structural equation modeling was used to test the hypotheses. Findings The study results revealed that envying-others dimension has a significant negative effect on both task performance and contextual performance. In addition, the findings indicate more envious feelings of private sector employees than public sector employees. For public sector employees, male participants were found to envy others more than females. Research limitations/implications In addition to the contributions, this study has its limitations. First, although the study was carried out with a comprehensive sample, it is limited to the views of 1,518 employees in Istanbul and is a cross-sectional study. Also, employee performance is evaluated through self-reporting, which forms another limitation; it could have been more reliable for the supervisors to assess their subordinates' performance. Practical implications Apart from scholars, our findings have implications for practitioners. Feelings such as envy that comes with a sense of competition can create an environment that stimulates people, motivates them to work, can make them productive and can also cause an ultimately destructive situation. This makes it critical to manage envy in the workplace. Though there may be facilitators behind it, one crucial factor that fuels envy in the workplace is the lack of fair human resources policies and systems. Still, human resources management is undeveloped in most public organizations. With effective human resources management, there may be some roadmaps for managers to dissolve conflicts arising from envy. First, it is imperative to have systems that will separate the employee from the others, which everyone will accept, strengthening the feelings of justice among employees. Envy often occurs following a social comparison. Management can implement an incentive system that supports employee collaboration and avoid nepotism. Especially in private organizations where the competition is more among employees, managers should give more attention to understand their subordinates' feelings. The managers' attention to expressing their feelings toward their subordinates could establish an equal distance within the workplace. In this sense, language selection is critical, and managers should be mindful of linguistic triggers. Managers should not avoid giving both positive and negative feedback to their employees. Unwarranted and unsystematic reward and/or punishment systems, made with the good intentions of increasing competition, can trigger envy. Finally, managers should implement an open-door policy and open communication that will encourage all team members to be transparent to each other. Originality/value The study was based on a rationale that envy has detrimental workplace outcomes that lead to low task and contextual performance. Although there exists a recent interest for examining the relation between workplace envy and employee performance, based on being envied and envying others dimensions, these studies are limited. This study focuses on these dimensions and performance relations, and it also provides a comparative outlook for public and private sector employees in Turkey in terms of workplace envy.
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.
Citation - Scopus: 10
Effectiveness of Smes in Turkish Economy and Agricultural Industry Sector
(2004) Baykal, N.A.; Gunes, E.
The latest developments and modulations in Turkish economy, adaptation process to European Union and entering into international markets, risks and uncertainties in these markets and some opportunities may affect SMEs in positive and negative aspects. In fact, new areas may open and some business sectors may slowly disappear. As part of the adaptation process with EU, SMEs deserve important order on the agenda while trying to enter international markets but are left to their fate in Turkey. In this article, the existing situations, problems and contributions of SMEs in industrial and agricultural sector to Turkish economy will be analysed, then policies that must be put in practice for more contribution to Turkish economy will be dwelt upon. Finally, solutions to these situations will be proposed. © 2004 Inderscience Enterprises Ltd.
Citation - WoS: 4
Citation - Scopus: 4
The Effects of Paternalistic Leadership on Task Performance: Testing a Moderated Mediation Model in Turkish Organizations
(Nomos verlagsgesellschaft Mbh & Co Kg, 2021) Karabay, Melisa Erdilek; Sener, Irge; Elci, Meral; Cetin, Fatih
Drawing on the findings from a serial moderated mediation model, this study aims to expand prior research by investigating the interaction between paternalist leadership and employee task performance. Study also aims to test the indirect effects of perceived person-organization fit and psychological ownership on the relationship between paternalistic leadership and employee task performance, through serial mediation models. Furthermore, the moderating role of organizational size in direct and all indirect relations between paternalistic leadership and task performance, through five different models is tested. Sample consists of 1,652 employees from various industries in Istanbul, Turkey. Hypothesized relationships were tested through structural equation modelling. The findings demonstrated the significant positive direct relationship between paternalistic leadership and employee task performance. Psychological ownership mediated the relationship of paternalistic leadership and task performance while person-organization fit had no mediating effect. Practical implications and further recommendations are also discussed.
Citation - WoS: 30
Citation - Scopus: 34
Employee Deviant Behavior: Role of Culture and Organizational Relevant Support
(Emerald Group Publishing Ltd, 2019) Kalemci, R. Arzu; Kalemci-Tuzun, Ipek; Ozkan-Canbolat, Ela
Purpose The purpose of this paper is to increase the knowledge and understanding of organizational and supervisory support in the context of employee deviant workplace behavior (DWB) by examining the potential associations of employees' cultural value orientations. This paper aims to: clarify DWB; review perceived organizational support (POS) and perceived supervisory support (PSS); discuss the meaning of employees' cultural value orientations (individualism-collectivism, power distance and paternalism); use the fuzzy logic model to analyze relationships between DWB and POS, as well as PSS and employees' cultural value orientations. Design/methodology/approach This research applies a fuzzy-set qualitative comparative analysis. Findings The results show the role of employee perceived organizational and supervisory support and cultural dimension (power distance and paternalism) configurations on employee DWB. Originality/value The main originality of this study is to further increase the understanding of organizational and supervisory support in the context of employee DWB by examining the potential associations of employees' cultural value orientations. This study extends the previous research by providing evidence that organizational and supervisory support influences employees' DWB.
Citation - WoS: 3
Citation - Scopus: 4
Entry Barriers To the Nanotechnology Industry in Turkey
(Igi Global, 2010) Sener, Irge; Aydogan-Duda, Neslihan
Nanotechnology is the science that focuses on the control of matter at the atomic scale. It has the potential to create many new materials and devices with wide-ranging applications, such as in medicine, electronics and energy production. There are many entry barriers which can affect nanotechnology penetration in developing and emerging nations. This chapter discusses such barriers for Turkey. Despite about 10 universities having nanotechnology programs, the number of nanotechnology firms in the country is still low. Using combinations of interviews, surveys and literature, these issues that continue to stall the commercialization of discoveries in Turkey are examined.
Citation - WoS: 18
Citation - Scopus: 18
Estimation in Bivariate Nonnormal Distributions With Stochastic Variance Functions
(Elsevier Science Bv, 2008) Tiku, Moti L.; Islam, M. Qamarul; Sazak, Hakan S.
Data sets in numerous areas of application can be modelled by symmetric bivariate nonnormal distributions. Estimation of parameters in such situations is considered when the mean and variance of one variable is a linear and a positive function of the other variable. This is typically true of bivariate t distribution. The resulting estimators are found to be remarkably efficient. Hypothesis testing procedures are developed and shown to be robust and powerful. Real life examples are given. (C) 2007 Elsevier B.V. All rights reserved.
Citation - WoS: 21
Citation - Scopus: 23
An 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
We 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.

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