Yılmaz, Mustafa Kemal

Profil fotoğrafı
 E-posta Adresi
mustafa.yilmaz@ihu.edu.tr
ORCID Profili
0000-0001-6036-0559
WoS Profili
S-9489-2017
Scopus Profili
57214083720
YÖK Araştırmacı Profili
00E2002187F4AF69
Google Akademik Profili
tr&user=rxPVFDcAAAAJ
TR-Dizin Profili
802607
SOBİAD Profili
268880
Web Sitesi
akademik.ihu.edu.tr/tr/mustafa-yilmaz

Araştırma projeleri

Organizasyon Birimleri

Organizasyon Birimi Logosu
Organizasyon Birimi
Yönetim Bilimleri Fakültesi, İşletme Bölümü
Küresel rekabete ayak uydurmak ve sürdürülebilir olmak isteyen tüm şirketler ve kurumlar, değişimi doğru bir şekilde yönetmek, teknolojinin gerekli kıldığı zihinsel ve operasyonel dönüşümü kurumlarına hızlı bir şekilde adapte etmek zorundadırlar.

Adı Soyadı

Mustafa Kemal Yılmaz

İlgi Alanları

Capital Markets, Derivatives Markets, Risk Yönetimi, Kurumsal Finansman, Sürdürülebilirlik

Kurumdaki Durumu

Aktif Personel

Filtreler

2020 - 20238
Filtreleri Sıfırla

Ayarlar

WoS Q: Q1 × Tam Metin: true ×

Arama Sonuçları

Listeleniyor 1 - 8 / 8
  • Küçük Resim
    Yayın
    The evaluation of operational efficiencies of Turkish airports: An integrated spherical fuzzy AHP/DEA approach
    (Elsevier, 2022) Yılmaz, Mustafa Kemal; Kuşakcı, Ali Osman; Aksoy, Mine; Hacıoğlu, Ümit; Hacıoğlu, Ümit; Yılmaz, Mustafa Kemal; Kuşakcı, Ali Osman; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    The demand for air transport services has significantly increased around the globe, which has brought new investments in airports, which, in turn, requires in-depth efficiency analysis of these capital-intensive endeavors. This study examines the operational efficiencies of 46 Turkish civil airports from 2015 to 2018. We employ a novel hybrid methodology that combines Spherical Fuzzy Sets based Analytic Hierarchy Process (SFS-AHP) and Data Envelopment Analysis (DEA), which provides a solid basis for efficiency analysis. To this end, it can handle the hesitancy and uncertainty that the subjective evaluation process of input and output factors possess. Then, we use Self Organizing Maps (SOM), a machine learning method for clustering, to examine the effect of outlier airports on the efficiency scores. Finally, a posthoc analysis is conducted with Tobit regression model to assess the explanatory power of external factors on the efficiency scores, i.e., tourism potential, number of international flights, distance to the city center, population, public/private ownership, and age of airport. The findings show that 67.2% of the Turkish airports operate below the optimal efficiency level, and 93.5% of them should make considerable efforts to refine their operations by implementing managerial and structural changes to reduce input factors. The results also suggest that the airports located in high-density touristic areas achieve higher efficiency levels. Those relatively closer to the city center lead to more airport traffic, generating more revenues. Thus, both factors have a significant impact on efficiency scores. The study provides a novel efficiency analysis framework for airport operators and policy makers that helps them make informed decisions.
  • Küçük Resim
    Yayın
    Does the stock market value inclusion in a sustainability index? Evidence from Borsa Istanbul
    (MDPI journals, 2020) Yılmaz, Mustafa Kemal; Aksoy, Mine; Tatoğlu, Ekrem; Tatoğlu, Ekrem; Yılmaz, Mustafa Kemal; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    This study examines the relationships between corporate sustainability (CS) performance of the companies (proxied by inclusion in sustainability index) listed in Borsa Istanbul (BIST, Istanbul, Turkey) and market-specific company performance measures over the period of 2014–2017. The results show that there is no strong evidence of the effect of inclusion in or exclusion from the BIST Sustainability Index (BIST SI) on stock returns and systematic risk (betas) of companies. However, the results reveal that inclusion in the BIST SI reduces the total risk of the companies and protects them from stock declines in case of a severe crisis by improving their resilience compared to other companies not included in the BIST SI. Although no significant link is found concerning the impact of the companies’ inclusion on the level of foreign ownership, a positive association is noted between BIST SI inclusion and the level of institutional ownership.
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    Towards sustainable cities: A sustainability assessment study for metropolitan cities in Turkey via a hybridized IT2F-AHP and COPRAS approach
    (Elsevier, 2022) Kuşakcı, Sümeyye; Yılmaz, Mustafa Kemal; Kuşakcı, Ali Osman; Sowe, Samba; Nantembelele, Fatuma Abdallah; Yılmaz, Mustafa Kemal; Kuşakcı, Ali Osman; Kuşakcı, Sümeyye; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    Accelerating trends of urbanization enforce the integration of sustainability principles into urban planning in a local scale to foster prosperity for the next generation of cities. This study incorporates fifty-three indicators on economic, social, environmental, and institutional dimensions to develop a Sustainable Cities Index (SCI) and assess the sustainability performance of thirty metropolitans in Turkey over 2010-2018. Turkish metropolitans constitute an appealing case study due to the rapid urbanization within the same time span. To answer how new metropolitans have been doing and whether they perform better than formerly declared metropolitans in Turkey, we propose a novel methodology with three stages that hybridizes Interval Type-2 Fuzzy Analytical Hierarchy Process (IT2F-AHP) and Complex Proportional Assessment of Alternatives (COPRAS). The former captures a high degree of uncertainty due to the subjective weight assignment by the experts, while the latter calculates aggregate scores for 30 cities. Finally, we conduct posthoc analyses to examine the significance of the urbani-zation policies in Turkey on the SCI scores. Thus, the study provides valuable insights into urbanization practices and encourages local administrations to spend more effort balancing the benefits and costs of public policies on sustainability.
  • Küçük Resim
    Yayın
    Market reaction to regulatory policy changes in financial statements filings: Evidence from Turkey
    (Springer, 2020) Yılmaz, Mustafa Kemal; Aksoy, Mine; Çelik, Tankut T.; Yılmaz, Mustafa Kemal; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    Financial reporting has a vital impact on investors for acquiring and integrating value-relevant information in making or revising investment decisions. This article investigates how changes in regulatory disclosure policy for financial reporting influence market reaction for the companies listed on Borsa Istanbul over the period2003–2017. We elaborate our findings in the context of investor attention and trading opportunities, resulting in three distinct policies. The results reveal that smallcapirms are more exposed to abnormalities than large-cap firms for positive news before and after the public disclosure platform (PDP). Further, the number of financial statements filings made on the same day affects the abnormal returns before the PDP (from 2003 to June 2009) and, after the PDP (from 2009 to 2013), where the companies are allowed to release them intra-day. Additionally, the response of investors to financial statements filings on Friday is quite different than other days of the week before the PDP and after the PDP (from 2013 to 2017), where the companies are required to make their release only after the market closure. Finally, as a search facilitating technology, the adaptation of XBRL does not translate into an improvement on market reaction. These findings support the validation of limited investor attention and post-announcement drift in the Turkish capital market.
  • Küçük Resim
    Yayın
    Antecedents of corporate sustainability performance in Turkey: The effects of ownership structure and board attributes on non-financial companies
    (Elsevier, 2020) Aksoy, Mine; Yılmaz, Mustafa Kemal; Tatoğlu, Ekrem; Basar, Merve; Tatoğlu, Ekrem; Yılmaz, Mustafa Kemal; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    The discourse of corporate sustainability performance (CSP) has created an increasing motivation for companies to improve their competitive advantage. This study examines the drivers leading to a high level of CSP within non-financial Turkish companies listed in the Borsa Istanbul Sustainability Index. Drawing on both stakeholder and agency theories, we formulate a set of hypotheses that link CSP with ownership structure, board diversity, and firm-specific characteristics. Based on logit and probit models, the empirical results tend to confirm the positive influence of foreign and institutional ownerships in shaping CSP and indicate that CSP is positively linked with board size and the proportion of independent board members. Further, the findings show that companies with a leading level of CSP have a lower return than companies with mediocre CSP based on a market-based measure, Tobin’s Q.
  • Küçük Resim
    Yayın
    Development of a sustainable corporate social responsibility index for performance evaluation of the energy industry: A hybrid decision-making methodology
    (Elsevier, 2023) Dinçer, Hasan; Yüksel, Serhat; Hacıoğlu, Ümit; Yılmaz, Mustafa Kemal; Delen, Dursun; Hacıoğlu, Ümit; Yılmaz, Mustafa Kemal; Delen, Dursun; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    The ever-increasing pressure from stakeholders and policymakers on energy companies to achieve Sustainable Development Goals (SDGs) and Corporate Social Responsibility (CSR) mission requires them to reinvent their policies and practices. This study aims to examine the performance of alternative business models for the oil and gas industry by employing a hybrid business analytics methodology under a fuzzy environment resulting in a generalizable model named “Sustainable Development Goals-oriented CSR Index.” The proposed methodology employs a hybrid framework that utilizes bipolar Q-rung Orthopair Fuzzy (q-ROF), Multi Stepwise Weight Assessment Ratio Analysis (M-SWARA), and Elimination and Choice Translating Reality (ELECTRE) methods. The findings show that (i) the proposed model is reliable and consistent throughout the similar fuzzy set value ranges, (ii) clean energy is the most important SDG-oriented CSR Index factor for the sustainable energy industry in emerging economies, (iii) drilling is the best alternative energy sourcing for the oil and gas industry, and (iv) clean energy projects have the highest priority for energy investors. The results also highlight that global warming can be managed with effective energy practices for long-term sustainability. Finally, the findings suggest that energy companies should have the essential technological infrastructure and capable workforce to increase investment efficiency.
  • Küçük Resim
    Yayın
    Crafting performance-based cryptocurrency mining strategies using a hybrid analytics approach
    (Elsevier, 2021) Hacıoğlu, Ümit; Chlyeh, Dounia; Yılmaz, Mustafa Kemal; Tatoğlu, Ekrem; Delen, Dursun; Hacıoğlu, Ümit; Tatoğlu, Ekrem; Yılmaz, Mustafa Kemal; Delen, Dursun; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    Crafting and executing the best cryptocurrency mining strategy is vital to succeeding in cryptocurrency market investments. This study aims to identify the best cryptocurrency mining strategy based on service providers’ performance for cryptocurrency mining using a hybrid analytics approach, which integrates the Analytic Hierarchy Process (AHP) and Fuzzy-TOPSIS techniques, along with sensitivity analysis. The results show that hosted mining is the overall best cryptocurrency mining strategy, followed by home mining and cloud mining, based on both total cost of operations and cryptocurrency payout criteria. The empirical findings also suggest that the critical features of the highest performing service providers (i.e., hosted mining strategies and cloud mining) were their flexibility of contracts and the superior efficiency in terms of the daily payout. Finally, of the three location alternatives for home mining, Turkey ranks first compared to the U.S. and Europe.
  • Küçük Resim
    Yayın
    Optimizing sustainable industry investment selection: A golden cut-enhanced quantum spherical fuzzy decision-making approach
    (Elsevier, 2023) Hacıoğlu, Ümit; Dinçer, Hasan; Yılmaz, Mustafa Kemal; Yüksel, Serhat; Sonko, Mariama; Delen, Dursun; Hacıoğlu, Ümit; Yılmaz, Mustafa Kemal; Delen, Dursun; Yönetim Bilimleri Fakültesi, İşletme Bölümü
    This study aims to rank sustainable industry alternatives in emerging markets based on the directional impact relations of the environmental, social, and governance (ESG) index components for a socially and environmentally conscious investment strategy. To achieve this goal, we employ a golden cut-enhanced quantum spherical fuzzy decision-making approach. Specifically, we first use a quantum spherical fuzzy DEMATEL technique to identify the impact-relation directions and the weights of the ESG criteria set. Second, we employ the extended TOPSIS with the quantum spherical fuzzy sets to rank the industry alternatives concerning their directional ESG performances. The findings show that (i) H20 Emissions, Innovation, Community Investment, Gender Equity, Human Rights, and CSR Strategy are the main influencing factors based on their impact-relations directional scores, (ii) Resource Usage, Product Responsibility, and Shareholders’ Rights are the set of criteria under the influence of remaining ESG, (iii) Innovation is the strongest ESG performance criterion, whereas Human Rights is the weakest, (iv) technology and communication are the best-performing industries based on the directional ESG index performance scores, whereas real estate and basic materials industries are the worst performing. The study provides valuable and actionable insights for companies that aim to make socially responsible investments.