Ticari Bilimler Fakültesi / Faculty of Commercial Science

Permanent URI for this collectionhttps://hdl.handle.net/11727/2074

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2014 - 2019292020 - 202319

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Start date: 2014search.filters.applied.f.language: search.filters.language.eng

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    Factors Determining Consumer Concerns About Clothing Industry Problems
    (2023) Erol boyaci, Gulay; Senturk ozer, Leyla; HOC-6390-2023
    Although the public concern towards unsustainable current production and consumption is growing, the inadequacy of global regulations on sustainability issues puts the responsibility on consumers. However, despite their concerns, some consumers need help shopping from sustainable brands. The current research examines some antecedents of consumer concern towards the clothing industry's environmental and sweatshop issues. Data is obtained from 372 Turkish fast fashion consumers through online platforms. Level of exposure to informative posts on social media platforms, the perceived knowledge and belief towards the issues positively affect concern. Also, decreasing concern towards these problems with advancing age is observed in Turkiye.
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    Women Board Members' Impact on ESG Disclosure with Environment and Social Dimensions: Evidence from The European Banking Sector
    (2023) Gurol, Burcu; Lagasio, Valentina; https://orcid.org/0000-0001-9974-2351; HGC-2474-2022
    PurposeThis study aims to investigate the relationship between banks' board structure and sustainability performance. Design/methodology/approachThe empirical quantitative paper covers a sample of 35 European banks that are listed at the EUROSTOXX 600. Regression analysis techniques were used in the analyses. FindingsResults indicate that board size, women ratio and independent directors ratio on board are positively and significantly related to environmental social governance (ESG), E and S disclosure scores. Also, we find that ESG disclosure is related to bank profitability. Practical implicationsFindings have implications for both policymakers and practitioners (bankers and investors). Large bank boards, which have women and independent members, could perform better in terms of ESG disclosure. The results also show that large banks and banks with high borrowing care more about sustainability. For banks to reach resources, they should perform well in terms of sustainability disclosure to their stakeholders. Social implicationsBanks should observe academic findings on corporate governance (CG) practices, which lead to a better ESG disclosure to structure their CG to improve at the best their disclosure policies: they should prefer larger boards with a high level of women and independence. In addition, we attach importance to the ESG performance of the banking sector due to its fund transfer functions. Banks transfer the deposits they collect to those in need of funds as loans. For this reason, it is important to which sector and which business they give credit. The importance of banks on ESG and their adoption of sustainability dimensions also affect their credit decisions. Originality/valueThis study examines the relationship between banks' board structure variables and their effect on ESG, E and S scores separately. This study thinks that the G score can be a handicap for ESG-CG relations. Because chosen CG variables (women ratio, independent ratio, board size) affect G scores positively and can reason for positive ESG-CG relation. The environmental and social impact of women ratio, independent ratio and board size can be seen in this study.
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    Effect of Polynomial, Radial Basis, and Pearson VII Function Kernels in Support Vector Machine Algorithm for Classification of Crayfish
    (2022) Garabaghi, Farid Hassanbaki; Benzer, Recep; Benzer, Semra; Gunal, Aysel Caglan; 0000-0002-5339-0554; A-5050-2014
    Freshwater crayfish are one of the most important aquatic organisms that play a pivotal role in the aquatic food chain as well as serving as bioindicators for the aquatic ecosystem health assessment. Hemocytes, the blood cells of crustaceans, can be considered stress and health indicators in crayfish, and are used to evaluate the health response. Therefore, total hemocyte cell numbers (THCs) are useful parameters to show the health of crustaceans and serve as stress indicators to decide the quality of the habitat. Since, catching the fish and the other aquatic organisms, and collecting the data for further assessments are time-consuming and frustrating, today, scientists tend to use swift, more sophisticated, and more reliable methods for modeling the ecosystem stressors based on bioindicators. One tool which has attracted the attention of science communities in the last decades is machine learning algorithms that are reliable and accurate methods to solve classification and regression problems. In this study, a support vector machine is carried out as a machine learning algorithm to classify healthy and unhealthy crayfish based on physiological characteristics. To solve the non-linearity problem of the data by transporting data to high-dimensional space, different kernel functions including polynomial (PK), Pearson VII function-based universal (PUK), and radial basis function (RBF) kernels are used and their effect on the performance of the SVM model was evaluated. Both PK and PUK functions performed well in classifying the crayfish. RBF, however, had an adverse impact on the performance of the model. PUK kernel exhibited an outstanding performance (Accu-racy = 100%) for the classification of the healthy and unhealthy crayfish.
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    Analysis of Personal Information Security Behavior and Awareness
    (2016) Ogutcu, Gizem; Tastik, Ozlem Muge; Chouseinoglou, Oumout; AAD-2902-2020
    Hardware and software security mechanisms are widely used to strengthen information systems (IS) against attacks. However, these systems are still highly vulnerable to threats from users' undesirable behaviors, which are closely related to IS users' information security awareness. This study has been carried out in an effort to investigate the IS users' risky behaviors that may threaten information security. The preventive actions employed by users, the threats they may be exposed to, or whether they had an adverse experience or to what extent they perceive risks have also been investigated. Four scales: Risky Behavior Scale (RBS), Conservative Behavior Scale (CBS), Exposure to Offence Scale (EOS) and Risk Perception Scale (RPS), were developed depending on the data collected with the use of surveys. The scales developed from the content of the survey were applied to students, academics and administrative staff of a university, which also embodies hospitals and educational organizations located in different geographical and socio-economical regions of Turkey. On the base of developed scales, the results of the study show that there are significant differences within samples and according to the habits of Internet usage. (C) 2015 Elsevier Ltd. All rights reserved.
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    Transformation of Islamic Work Ethic and Social Networks: The Role of Religious Social Embeddedness in Organizational Networks
    (2016) Kirkbesoglu, Erdem; Sargut, Ali Selami; 0000-0002-6781-9753; 0000-0002-9337-1673; ABI-3973-2020; U-4137-2018
    The aim of this study is to explore the influence of religious beliefs on social or work-related ties of managers who are member of organizational networks representing two different ideologies (religious and secular) in Turkey. In this research, the emergence of secular and devout entrepreneurs is considered as a phenomenon, and special attention is paid to religious transformation and secularism in Turkey. Social network analysis method is used to define the nature of communication links among 80 chairmen who are the members of two conflicting and dominant groups in Turkish business system. The findings show that Protestant work ethic suggested by Weber with regard to Christianity have attained a similar place over the past decade in Islamic organizational networks. The concern of political power in religion leads to organizational networks being nourished by religious norms and creeds in many developing countries. Especially in societies like Turkey where the state is dominant in the business life, organizations and managers prefer to be included in religious networks to make close contacts with the state. Another significant finding is that efforts of the members of religious networks-in spite of their relatively closed characteristics-in terms of being at the center of a network and taking the brokerage role, are highly developed on the contrary to the literature.
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    Content-Based Search on Time-Series Microarray Databases Using Cluster-Based Fingerprints
    (2017) Ozkoc, Esma Erguner; Ogul, Hasan; AAG-1506-2021
    Background: The rapid growth of gene expression databases has created a need for content-based searches as an alternative to unstructured database queries using keyword- or metadata-based searches. Content-based searching is the ability to retrieve all experiments with similar gene expression patterns in a database regardless of the biological annotations provided for these experiments. Objective: While this concept is still in its infancy in a general context, in this study we focus on applying it to a specific subset of gene expression datasets, by only querying experiments involving time-series expression profiles. Method: To this end, we propose a novel experiment fingerprinting scheme obtained by clustering expression profiles, for content-based searching of time-series microarray experiments. To determine the retrieval ability of the proposed scheme, we performed a simulated information retrieval task on a large set of microarray experiments gathered from a public repository. The relevance between any two experiments was then defined using their commonalities based on annotated disease associations. Results and Conclusion: The results showed that relevant experiments can be more successfully retrieved using this new method compared with traditional differential expression-based methods.
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    Deviant Employee Behavior in the Eyes of Colleagues: The Role of Organizational Support and Self-Efficacy
    (2017) Tuzun, Ipek Kalemci; Cetin, Fatih; Basim, H. Nejat; 0000-0001-6979-2040; 0000-0002-2487-9553; 0000-0002-2605-9962; ABB-5350-2020; J-8116-2015
    The present study investigates the influences of multifocal organizational support in the context of deviant employee behavior by examining the potential associations with employees' self-efficacy characteristics. The study proposes that perceived multifocal support and self-efficacy have a direct relationship with deviant behavior, and that these two variables interact in their relationship with deviant workplace behavior. Using self- and peer-reported data from 225 academics, hypothesized relationships were investigated using structural equation modeling. The results indicate that two different forms of support (organizational and supervisory) strongly influenced two different forms of deviant behavior (organizational and interpersonal). Whereas perceived organizational support decreases organizationally relevant deviant behavior, supervisory support decreases deviant behavior toward colleagues. The results also showed that high self-efficacy moderates both the negative relationship between organizational support and deviant behavior toward the organization and that between supervisory support and deviant behavior toward colleagues. The study also discusses the implications of these findings for managers, along with recommendations for future research.
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    An Integrated Research for Architecture-Based Energy Management in Sustainable Airports
    (2017) Uysal, Murat Pasa; Sogut, M. Ziya; 0000-0002-8349-9403; 0000-0002-9782-7885; GQQ-0222-2022; T-2601-2017
    Energy Management (EM) has become crucial and much more complicated for airports with the introduction of various energy sources, technologies and different comfort requirements. Regarding the aviation industry as one of the major sources of global warming and air pollution, this situation becomes highly critical. However, the review of literature on Energy Management Information Systems (EMIS) for airports shows that the proposed solutions are usually domain-specific, platform-depended and away from suggesting complete solutions and architectures. Therefore, the main argument of this study is that a holistic and integrated approach should be adopted for EM in airports and we claim the notion of sustainability through the use of Enterprise Architecture (EA)-based EM. In this paper, we present the results of a two-faced research study. Action Research (AR) and Design Science Research (DSR) methods are combined to adopt an integrated approach. At the first phase, an EA is developed and evaluated, and then, this is followed by the second phase with three cases to find the potential energy savings in Istanbul Airport. Along with the findings, the primary and secondary contributions of this research brought to the EM knowledge domain are presented. Consequently, there is an important potential for energy saving in the terminal buildings, which would be approximately 70% of the total airport energy consumption. There is also a nearly 250.000 $/year potential saving, and also 121397 $/year for the daylight time and period. This research can be seen as an initial attempt to the enhancement of sustainable airports, and therefore, it has showed the potential for using EAs as a means to improve EM in airports. We hope that this study may help researchers to obtain an overview of existing and possible approaches to sustainability through the use of EAs for EM practices. (C) 2017 Elsevier Ltd. All rights reserved.
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    Financial Disclosure and the Cost of Equity Capital: The Empirical Test of the Largest Listed Companies of Kazakhstan
    (2017) Baimukhamedova, Aizhan; Baimukhamedova, Gulzada; Aimurzinov, Murata; Luchaninova, Albina
    Providing information to the public is not a costless task. Among the costs of disclosure are the costs of information production and dissemination; for example, the costs of adopting an information system to collect, process data and report information about the company and the costs of hiring accountants and audits, etc. In this study, a framework for empirical tests of the relation between disclosure and the cost of equity capital is determined. This study extends research into whether disclosure of corporate and financial information is associated with firms' costs of equity capital. Using cost of equity capital estimates derived from capital asset pricing model, we find that firms with higher levels of financial transparency are associated with significantly lower costs of equity capital. Economic theory assumes that by increasing the level of corporate reporting, firms not only increase their stock market liquidity, but also decrease the investors' estimation risk, arising from uncertainty about future returns and payout distributions. The results show that firms on the Kazakhstan market can reduce their cost of equity capital by increasing the level of their voluntary corporate disclosures. Based on the analysis of existing empirical research, the disclosure index for a sample of 37 Kazakh companies has been constructed and regression analysis of the influence of the disclosure index on the cost of equity capital has been conducted. The obtained results show that the received findings correlate with foreign empirical studies, and the disclosure index in this sample has a negative impact on the cost of equity capital.
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    Patterns of Female Entrepreneurial Activities in Turkey
    (2017) Tuzun, Ipek Kalemci; Takay, Bahar Araz; 0000-0001-6979-2040; ABB-5350-2020; AAC-8845-2021
    Purpose - This study aims to identify and understand the challenges, motivational factors and future needs of female entrepreneurs in Ankara, Turkey. Design/methodology/approach - The study uses the qualitative analysis methodology and uses the qualitative data analysis software, MAXQDA 11. A total of 41 randomly selected female entrepreneurs from the city of Ankara and rural areas of the Ankara region participated in semi-structured in-depth interviews. A total of 284 codes were defined. Findings - Results indicate that female entrepreneurs are mostly intrinsically motivated and are driven by the desire to achieve and to become independent. The socially constructed role of women in Turkey is the primary challenge faced by female entrepreneurs in both urban and rural areas. Moreover, the major future needs identified for female entrepreneurs are support from public institutions and access to managerial consultants. Originality/value - There are limited number of studies that closely examine the characteristics of female entrepreneurship activity and their challenges/motivations in Turkey. This research contributes to the existing literature through its qualitative nature and by highlighting differences in urban and rural female entrepreneurs. Moreover, the results of this study are useful for policy makers to evaluate the future needs of female entrepreneurs and the programs that will be needed to overcome the challenges facing female entrepreneurs in the entrepreneurial process.