Okechukwu Obulezi | Mathematics | Editorial Board Member

Dr. Okechukwu Obulezi | Mathematics | Editorial Board Member

Nnamdi Azikiwe University | Nigeria

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๐ŸŽ“ 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.

๐Ÿ’ผ Professional Endeavors

Dr. Obuleziโ€™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.

๐Ÿ”ฌ Contributions and Research Focus

Dr. Obuleziโ€™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.

๐Ÿ† 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.

๐ŸŒ 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.

๐Ÿ”ฎ 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


  • ๐Ÿ“„ 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

  • ๐Ÿ“„ 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

  • ๐Ÿ“„ 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

  • ๐Ÿ“„ 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

  • ๐Ÿ“„ 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

 

Sofia Karakasidou | Economics, Econometrics and Finance | Best Researcher Award

Ms. Sofia Karakasidou | Economics, Econometrics and Finance | Best Researcher Award

University of Thessaly | Greece

Author profile

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๐ŸŒฑ Early Academic Pursuits

Ms. Sofia Karakasidou's academic journey began with a strong foundation in economics. She earned her BSc in Economics from the Aristotle University of Thessaloniki, Greece, between 1990 and 1994. Eager to expand her expertise, she pursued a second BSc in Accounting & Finance at the University of Macedonia, Thessaloniki, Greece, from 1999 to 2004. Her academic endeavors continued as she attained an MSc in "Statistics and Actuarial Financial Mathematics" with a specialization in Actuarial Financial Mathematics from the University of the Aegean, Greece, from 2007 to 2011. Currently, she is a dedicated Ph.D. candidate at the University of Thessaly, Greece, focusing on advanced economic studies.

๐Ÿข Professional Endeavors

Ms. Karakasidou has a rich professional background, having served in various capacities at the Central Market of Thessaloniki S.A. since 1996. She began in the Administrative Department and soon transitioned to the Financial Department, where her expertise in financial management and administrative functions grew. Over the years, she climbed the ranks, eventually becoming the Head of Financial Services and, later, the Head of Administrative Services Department, a position she holds today.

๐Ÿ“Š Contributions and Research Focus

Ms. Karakasidou has made significant contributions to the field of economic statistics, particularly in the analysis of time series related to agricultural product prices. Her research, often presented at national and international conferences, delves into the complexities of price dynamics using advanced methods such as Recurrence Quantification Analysis and complex networks. Her published works, including papers in reputable journals like AppliedMath, reflect her deep commitment to understanding and improving financial and economic systems.

๐Ÿ† Accolades and Recognition

Throughout her career, Ms. Karakasidou has been recognized for her exceptional work. Her presentations at prominent conferences, such as the Panhellenic Conference on Statistics and the International Conference on Topology, have earned her respect in the academic community. Her ability to translate complex statistical data into actionable insights has been acknowledged by peers and professionals alike.

๐ŸŒ Impact and Influence

Ms. Karakasidou's work has had a profound impact on the understanding of economic patterns, particularly in the agricultural sector. Her research has provided valuable insights into the behavior of vegetable prices, offering a clearer picture of market dynamics. This has not only contributed to academic literature but also provided practical implications for economic policy and market regulation.

๐Ÿ“š Legacy and Future Contributions

As Ms. Karakasidou continues her Ph.D. studies and professional work, her legacy in the field of economic statistics is already taking shape. Her future contributions are likely to further enhance the understanding of economic systems, particularly in the area of time series analysis. With her ongoing research and dedication to academic excellence, Ms. Karakasidou is set to make lasting contributions that will influence future studies and practices in economics.

 

Publications


  • ๐Ÿ“„ Exploring Price Patterns of Vegetables with Recurrence Quantification Analysis
    Authors: Sofia Karakasidou, Athanasios Fragkou, Loukas Zachilas, Theodoros Karakasidis
    Journal: AppliedMath
    Year: 2024 (4(3), 1012-1046)

  • ๐Ÿ“„ Nonlinear Analysis of Time Series of Agricultural Product Prices: Application in the Central Market of Thessaloniki
    Author: Sofia Karakasidou
    Conference: 26th Panhellenic Conference on Statistics, Hellenic Statistical Institute
    Year: 2013

  • ๐Ÿ“„ Analysis of Time Series of Greek Vegetable Prices
    Author: Sofia Karakasidou
    Conference: 30th Conference on Applied Economics, University of Thessaly & Hellenic Statistical Institute
    Year: 2013

  • ๐Ÿ“„ Vegetable Price Time Series Analysis Using Complex Networks
    Author: Sofia Karakasidou
    Conference: International Conference on Topology, Nafpaktos, Greece
    Year: 2014

  • ๐Ÿ“„ Vegetable Price Dynamics Using Recurrence Plot Analysis
    Author: Sofia Karakasidou
    Conference: International Conference on Topology, Nafpaktos, Greece
    Year: 2023

 

Pankaj Kumar | Mathematics | Best Researcher Award

Assist Prof Dr. Pankaj Kumar | Mathematics | Best Researcher Award

National Institute Technology Hamirpur | India

Author Profile

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Early Academic Pursuits

Dr. Pankaj Kumar's academic journey began with a Bachelor of Science in Mathematics Honours from Ranchi University, followed by a M.Tech., in Operations Research from the National Institute of Technology, Durgapur. He pursued his Ph.D. in Optimization Methods in Finance at the prestigious Indian Institute of Technology Kharagpur, specializing in interval optimization methods for portfolio selection problems.

Professional Endeavors

Dr. Kumar has held various research and teaching positions, including Research Assistant Professor at the Department of Mathematics, SRM Institute of Science and Technology, and Visiting Faculty at the Institute of Financial Management and Research. He has also served as a Visiting Research Scholar and held Senior and Junior Research Fellowships at the Indian Institute of Technology Kharagpur.

Contributions and Research Focus

His research interests lie in operations research, optimization methods in finance, interval optimization, machine learning, and crop area planning. Dr. Kumar has contributed significantly to the field through his publications in esteemed journals and conferences, focusing on topics such as multi-objective portfolio selection, mean-value-at-risk portfolio optimization, and stochastic programming techniques.

Accolades and Recognition

Dr. Kumar has received several honors and awards, including travel grants from the Department of Science and Technology (DST) and recognition for his paper presentations. He has been awarded prestigious fellowships for his research work, including visiting, senior, and junior research fellowships at Indian universities.

Impact and Influence

His research has made a notable impact on the field of optimization and finance, providing valuable insights into portfolio selection, risk management, and decision-making processes. Dr. Kumar's work has been recognized through his appointment as an Editorial Board Member of Applied and Computational Mathematics (ACM) and teaching awards for his contributions to mathematics education.

Legacy and Future Contributions

Dr. Kumar's legacy lies in his dedication to advancing knowledge in operations research and finance through rigorous academic inquiry and innovative problem-solving approaches. His future contributions are poised to further enrich the field, addressing emerging challenges and pushing the boundaries of optimization theory and applications.

Notable Publications

Efficient solutions for vector optimization problem on an extended interval vector space and its application to portfolio optimization 2024

Parametric approach for multi-objective enhanced interval linear fractional programming problem 2023

Prediction based mean-value-at-risk portfolio optimization using machine learning regression algorithms for multi-national stock markets 2023 (20)

Solving mean-VaR portfolio selection model with interval-typed random parameter using interval analysis 2021 (3)

Multi-objective enhanced interval optimization problem 2020 (7)