Hakan Tahiri Mutlu | Social Sciences | Best Researcher Award

Assoc. Prof. Dr. Hakan Tahiri Mutlu | Social Sciences | Best Researcher Award

Bolu Abant İzzet Baysal University | Turkey

Assoc. Prof. Dr. Hakan Tahiri Mutlu is a distinguished academic in the fields of business, statistics, and applied quantitative methods, with a research portfolio spanning management, e-commerce, sustainability, and decision-making techniques. He has authored 11 scholarly documents, which have collectively received 35 citations, and he holds an h-index of 4, reflecting the impact of his work. Dr. Mutlu earned his Ph.D. in Business from Düzce University in 2020 with a thesis on optimal warranty policies and later completed doctoral studies in Statistics at Gazi University in 2016, following a master’s degree in Business and a bachelor’s degree in Mathematics. Throughout his academic career, he has held positions ranging from research assistant to associate professor at Abant İzzet Baysal University, contributing significantly to the Department of Business and Quantitative Methods. He has supervised multiple master’s and doctoral theses on topics including structural equation modeling, employee satisfaction, decision-making systems, and technology adoption. His research outputs include publications in internationally peer-reviewed journals and contributions to scientific books, covering subjects such as ESG performance, food waste, social media addiction, e-commerce, and entrepreneurial capital. Dr. Mutlu has also been actively involved in national research projects and has served in administrative roles such as coordinator for scientific research projects, faculty board member, and deputy head of the department, demonstrating both scholarly and institutional leadership.

Profiles : Scopus | Orcid | Google Scholar

Featured Publications

Tutar, H., Streimikiene, D., Mutlu, H. T., Kloudova, J., & Bilan, Y. (2025). Global food waste as an anti-sustainability trend: Analysis of economic and environmental impacts across countries. British Food Journal.

Tutar, H., Štreimikienė, D., & Mutlu, H. T. (2025). The relationship between ESG and financial performance in global firms: A multidimensional study across sectors and regions for the period 2015–2025. Corporate Social Responsibility and Environmental Management.

Tutar, H., Mutlu, H. T., & Streimikiene, D. (2025). Rethinking sustainable development: Multidimensional comparisons across countries and regions. Sustainable Development.

Akın, A., & Mutlu, H. T. (2025). Do Turkish physicians support euthanasia / death tourism? European Journal of Tourism, Hospitality and Recreation.

Akın, A., & Mutlu, H. T. (2025). The gastronomic product of the gastronomy city of Gaziantep: Menengiç coffee. Abant Sosyal Bilimler Dergisi.

Tutar, H., Mutlu, H. T., & Yüzen, İ. (2025). Regional disparities based on foreign trade and growth in TR42 and TR33 regions (2010–2024). Nevşehir Hacı Bektaş Veli Üniversitesi SBE Dergisi.

Tutar, H., Mutlu, H. T., & Uzun, H. (2025). Yöneticilerde empati yoksunluğu ölçeği: Geçerlilik ve güvenirlik çalışması [Lack of empathy in managers scale: Validity and reliability study]. Journal of Business Research - Turk.

Mutlu, H. T., Süvari, E., & Orhan, M. (2024). Coğrafi bilgi sistemi tabanlı çok kriterli karar verme yöntemi ile kaykay parkı yer seçimi: Bolu örneği [Skate park site selection using GIS-based multi-criteria decision method: Bolu case]. Abant Sosyal Bilimler Dergisi.

Tutar, H., & Mutlu, H. T. (2024). Dijital yorgunluk ölçeği (DİYÖ): Geçerlilik ve güvenirlik çalışması [Digital fatigue scale: Validity and reliability study]. İletişim Kuram ve Araştırma Dergisi.

Tutar, H., & Mutlu, H. T. (2024). Problematic digital technology use scale among university students: A validity and reliability study. Yuksekogretim Dergisi.

Ocel, Y., Mutlu, H. T., & Bayat, M. (2023). Determination of the relationship between lifestyle and impulsive purchasing behaviour. Marketing and Management of Innovations.

Tutar, H., & Mutlu, H. T. (2023). The mediating and regulatory role of organizational desensitization in the relationship between shrinkage of aim and loss of motivation. Yönetim ve Ekonomi Araştırmaları Dergisi.

Terzibaş, A., Mutlu, H. T., & Kavcar, B. (2023). Girişimcinin sahip olduğu bireysel girişimci sermayesi türlerinin girişim başarısına etkisi (TR42 bölgesinde bir araştırma) [The effect of individual entrepreneurial capital types on entrepreneurial success: A study in TR42 region]. Fiscaoeconomia.

Mutlu, H. T., & Yildiz, M. S. (2023). Determination of the optimal warranty policy and period from the manufacturer’s/seller’s perspective. Communications in Statistics - Simulation and Computation.

Okechukwu Obulezi | Mathematics | Editorial Board Member

Dr. Okechukwu Obulezi | Mathematics | Editorial Board Member

Nnamdi Azikiwe University | Nigeria

Author Profile

Scopus

Orcid

🎓 Early Academic Pursuits

Dr. Okechukwu Obulezi began his academic journey with a focus on statistical sciences, obtaining an ND in Statistics from Abia State Polytechnic in 2006. Driven by his passion, he continued with an HND in Statistics from the same institution, culminating in a strong foundation in quantitative analysis and data interpretation. Pursuing higher learning, he completed a PGD in Statistics at Nnamdi Azikiwe University in 2012, with a thesis on the "Discriminant Analysis of the Nigerian Fixed Assets." His master's thesis focused on "BIC-Based Relative Influence Measure for Outlier Detection and Variable Selection in Regression Analysis," setting the stage for his current Ph.D. in Statistics, where he explores complex statistical methods for predictive and analytical modeling.

💼 Professional Endeavors

Dr. Obulezi’s professional career spans several academic roles, starting as an Instructor at Abia State Polytechnic in 2011, where he advanced to Senior Instructor by 2015. In 2019, he joined Nnamdi Azikiwe University as an Assistant Lecturer in the Statistics Department, quickly progressing to Lecturer II and then Lecturer I by 2023. His responsibilities include teaching specialized courses such as Biostatistics, Statistical Methods, Probability Theory, and Matrix Algebra, where he imparts knowledge to the next generation of statisticians. Beyond teaching, he plays critical roles in advising undergraduates, coordinating seminars and projects, and contributing to departmental committees, such as the Faculty ICT Committee and Faculty Repair and Maintenance Committee.

🔬 Contributions and Research Focus

Dr. Obulezi’s research interests lie at the intersection of probability distributions, machine learning, and statistical modeling, with applications in survival analysis, acceptance sampling, and censored data analysis. His contributions to these fields include publications in high-impact journals, focusing on new statistical models for various real-world applications. Some of his significant research includes new distribution models for engineering, biomedical, and environmental data, optimization of GARCH models for financial volatility, and innovative sampling plans for reliability testing. His publications reflect his commitment to advancing the fields of statistics and machine learning by creating robust, practical solutions for complex data challenges.

🏆 Accolades and Recognition

Dr. Obulezi has earned recognition for his academic and research excellence, serving as a reviewer for several prestigious journals, such as Cogent Engineering, Scientific African, and Alexandria Engineering Journal. His expertise has also led him to contribute as a reviewer for academic book chapters, particularly in mathematical and computer science research. This engagement underscores his prominence as a thought leader in the statistical community and highlights the respect he commands among peers for his critical insights and expertise.

🌍 Impact and Influence

Dr. Obulezi's work in developing statistical models and distributions has had a significant impact, particularly in the areas of biomedicine, engineering, and environmental science. His innovative methodologies have helped refine statistical tools for better data analysis, contributing to improved outcomes in public health research, environmental risk assessment, and financial risk management. His influence also extends to mentoring students and collaborating with other academics, which enriches the statistical field and inspires the next generation of statisticians.

🔮 Legacy and Future Contributions

Looking forward, Dr. Obulezi aims to further his research in advanced statistical modeling, focusing on machine learning applications and data-driven decision-making in complex fields. His commitment to exploring new statistical approaches for big data and predictive analysis places him at the forefront of his field, positioning him to make enduring contributions that will drive innovation in statistical methodologies and applications for years to come.

 

Publications


  • 📄 Parameter estimation for reduced Type-I Heavy-Tailed Weibull distribution under progressive Type-II censoring scheme
  • Authors: Prakash, A., Maurya, R.K., Alsadat, N., Obulezi, O.J.
  • Journal: Alexandria Engineering Journal
  • Year: 2024

  • 📄 Sine generalized family of distributions: Properties, estimation, simulations and applications
  • Authors: Oramulu, D.O., Alsadat, N., Kumar, A., Bahloul, M.M., Obulezi, O.J.
  • Journal: Alexandria Engineering Journal
  • Year: 2024

  • 📄 A more flexible Lomax distribution: Characterization, estimation, group acceptance sampling plan and applications
  • Authors: Ekemezie, D.-F.N., Alghamdi, F.M., Aljohani, H.M., El-Raouf, M.M.A., Obulezi, O.J.
  • Journal: Alexandria Engineering Journal
  • Year: 2024

  • 📄 A new extension of Burr-Hatke exponential distribution with engineering and biomedical applications
  • Authors: Anyiam, K.E., Alghamdi, F.M., Nwaigwe, C.C., Aljohani, H.M., Obulezi, O.J.
  • Journal: Heliyon
  • Year: 2024

  • 📄 Group acceptance sampling plan based on truncated life tests for Type-I heavy-tailed Rayleigh distribution
  • Authors: Nwankwo, M.P., Alsadat, N., Kumar, A., Bahloul, M.M., Obulezi, O.J.
  • Journal: Heliyon
  • Year: 2024