İşletme Bölümü Yayın Koleksiyonu

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

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Citation - WoS: 13
Board Composition and Gender Diversity: Comparison of Turkish and Nigerian Listed Companies
(Elsevier Science Bv, 2014) Karaye, Abubakar Balarabe; Sener, Irge
The 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.
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: 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: 8
The Effect of Organizational Culture on Organizational Image and Identity: Evidence From a Pharmaceutical Company
(Elsevier Science Bv, 2013) Bingol, Dursun; Sener, Irge; Cevik, Emin
Every organization has its own distinct organizational culture that is fundamental for organizational identity of employees and the perceptions of organizational image. In this study, it is aimed to understand the relations of organizational culture, identity and image within a regional office of a pharmaceutical company. Three different surveys, each focusing on a different dimension, are conducted with all of the 10 managers of the regional office, 30 employees and 85 customers of the company. The findings of the research demonstrate the presence of a hierarchy culture, moderate level of organizational identity for employees and image perceptions based on R&D for the employees and brand for the customers. In the light of the findings, it is evaluated that there exists a need for change of the present organizational culture.
Citation - WoS: 21
The Effects of Organizational Justice and Ethical Climate on Perceived Work Related Stress
(Elsevier Science Bv, 2014) Elci, Meral; Uslu, Tanyeri; Sener, Irge; Sert, Arzu
Stress leads to negative consequences for employees and organizations. Therefore, understanding the relation of stress with other variables is important. This paper examines the relationship between organizational justice, ethical climate and perceived work Related Stress. According to the findings from 915 employees, there exists a significant negative relationship between distributional and procedural justice and work related stress. In addition, ethical climate also has a negative effect on work related stress. With this study, it can be inferred that development of ethical climate and organizational justice within the organizations help to decrease the work related stress of employees. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
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: 24
Heuristic Policies for the Stochastic Economic Lot Sizing Problem With Remanufacturing Under Service Level Constraints
(Elsevier Science Bv, 2018) Kilic, Onur A.; Tunc, Huseyin; Tarim, S. Armagan
In this paper, we address the stochastic economic lot sizing problem with remanufacturing under service level constraints. The problem emerges in hybrid production systems where demand can be met via two alternative sources: manufacturing new products and remanufacturing returned products. The deterministic counterpart of this problem has been considered in the literature and it is shown to be NP-Hard. We focus on the case where period demands and returns are stochastic. The optimal solution to this problem is not a deterministic production schedule but a control policy, yet its structure has not yet been characterized. We propose two heuristic policies for the problem that make use of simple decision rules to control manufacturing and remanufacturing operations and present mathematical models thereof. (C) 2018 Elsevier B.V. All rights reserved.
Citation - WoS: 80
The Impact of Ethical Leadership and Leadership Effectiveness on Employees' Turnover Intention: The Mediating Role of Work Related Stress
(Elsevier Science Bv, 2012) Sener, Irge; Aksoy, Seval; Alpkan, Lutfihak; Elci, Meral
Having significant effects on organizational performance, the determinants of employee turnover has been studied extensively. One of the important antecedents of turnover intention of employees is leadership and work related stress. With this study it was intended to understand the effects of ethical leadership and leadership effectiveness on employees' turnover intentions. Work related stress is examined as a mediator of the relationship among ethical leadership, leader effectiveness and turnover intention. Using a sample of 1093 employees in 70 firms operating in nine different industries, it was found out that while ethical leadership and leadership effectiveness negatively affects turnover intention of employees, work related stress has a positive effect on employees's turnover intentions. In addition, work related stress occur to be a mediator variable for the proposed relations.
Citation - WoS: 11
Citation - Scopus: 13
The Impact of Morality and Religiosity of Employees on Their Hardworking Behavior
(Elsevier Science Bv, 2011) Sener, Irge; Alpkan, Lutfihak; Elci, Meral
Hardworking behaviour, one of the significant dimensions of work ethic, is among the most anticipated behaviours of employees working at all organizations. However, the research on the relation of hardworking with other variables is limited. In this study, it was intended to examine the influence of morality and religiosity on employees' hardworking behaviours. For this purpose, the data (N=715) were collected from the employees working in manufacturing, service and trade organizations located in Istanbul, Ankara and Kocaeli. Findings of this research indicate that morality and religiosity are factors that both have positive impact on hardworking behaviour. In addition, it was found out that hardworking, religiosity and morality differs according to gender, marital status and education level of participants. It is suggested that this study will contribute to the literature with its findings on the relation of morality, religiosity and hardworking behaviour. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility 7th International Strategic Management Conference
Citation - WoS: 36
The Mediating Role of Mobbing on the Relationship Between Organizational Silence and Turnover Intention
(Elsevier Science Bv, 2014) Erdilek, Melisa Karabay; Alpkan, Lutfihak; Sener, Irge; Elci, Meral
This paper examines the effect of organizational silence and mobbing on turnover intention of 1794 employees, who are employed in 39 different companies. The findings of the study indicate a significant positive effect of both organizational silence and mobbing on employees' turnover intention, besides according to the results there exist a positive significant effect of organizational silence on mobbing. In addition, the findings demonstrate a partial mediation effect of mobbing on organizational silence and turnover intention relationship. Since organizational silence and mobbing is a relatively new phenomenon for Turkish organizations, the results of this study contribute to the literature by creating awareness about the topic not only for scholars but also for the executives as well. (C) 2014 The Authors. Published by Elsevier Ltd.
Citation - WoS: 42
Citation - Scopus: 40
Prediction of Bank Financial Strength Ratings: the Case of Turkey
(Elsevier Science Bv, 2012) Ogut, Hulisi; Doganay, M. Mete; Ceylan, Nildag Basak; Aktas, Ramazan
Bank financial strength ratings have gained widespread popularity especially after the recent financial turmoil. Rating agencies were criticized because of their ratings and failure to predict the bankruptcy of the banks. Based on this observation, we investigate whether the forecast of the rating of bank's financial strength using publicly available data is consistent with those of the credit rating agency. We use the data of Turkish banks for this investigation. We take a country-specific approach because previous studies found that proxies used for environmental factors (political, economic, and financial risk of the country) did not have any explanatory power and it is hard to find international data for other important factors such as franchise value, concentration, and efficiency. We use two popular multivariate statistical techniques (multiple discriminant analysis and ordered logistic regression) to estimate a suitable model and we compare their performances with those of two mostly used data mining techniques (Support Vector Machine and Artificial Neural Network). Our results suggest that our predictions are consistent with those of Moody's financial strength rating in general.. The important factors in rating are found to be profitability (measured by return on equity), efficient use of resources, and funding the businesses and the households instead of the government that shows efficient placement of the funds. (C) 2012 Elsevier B.V. All rights reserved.
Citation - WoS: 16
Rules of the Game: Strategy in Football Industry
(Elsevier Science Bv, 2015) Sener, Irge; Karapolatgil, Ahmet Anil
Being one of the most popular sport industry in the world, football attracted interest not only for being a globalized sport and its impact on national identities, but also due to generation of high revenue from matchday, broadcast and commercial sources. With this study, strategic groups among the 50 global football club brands, based on these revenue is identified and the common main strategies of the groups are analyzed. Although many research is undertaken about strategic groups in various industries, similar research in sports industry is still at infancy. The findings indicate three different strategic groups, with member clubs of each group following similar strategies. In addition, brand value forms mobility barriers among strategic groups. (C) 2015 Published by Elsevier Ltd.
Citation - WoS: 14
Strategic Responses of Top Managers To Environmental Uncertainty
(Elsevier Science Bv, 2012) Sener, Irge
Managerial perceptions of their organizational environments in terms of environmental uncertainty form the basis of organizational strategies. In this study, it is aimed to determine the organizational strategies, developed in response to perceptions of environmental uncertainty measured by three dimensions, which are environmental dynamism, environmental complexity and environmental munificence. Interviews with 16 top-managers were conducted. The findings of the research demonstrate that top management's perceptions of environmental uncertainty have an impact on their companies' strategic orientations. Although most of the strategies were developed based on the perceptions of environmental munificence, mainly scarcity; only managers perceiving environmental dynamism and environmental complexity tend to form strategic alliances.
Citation - WoS: 12
Sustainability Reports Disclosures: Who Are the Most Salient Stakeholders
(Elsevier Science Bv, 2016) Sener, Irge; Varoglu, Abdulkadir; Karapolatgil, Ahmet Anil
Due to the importance of stakeholders for the sustainability of the companies, there exists a research interest to identify the important stakeholders. With this study, most salient and other groups of stakeholders were identified based on a content analysis of sustainability reports of 78 large-scale companies. Although many researches are undertaken in developed countries based on sustainability reports that are popular tools for information disclosure for the companies, similar research in developing countries is still at infancy. The findings of the study indicate shareholders and government to be the most salient stakeholders regardless of industry difference. (C) 2016 The Authors. Published by Elsevier Ltd.

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