Browsing by Author "Soner, O."

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    Article
    Discovering Operational Risk Patterns in Maritime Accident Reports Through Latent Theme Extraction
    (Routledge, 2025) Soner, O.
    Maritime accidents pose persistent risks to human life, environmental sustainability, and economic infrastructure. Traditional accident analysis methods rely on structured data and predefined taxonomies, limiting their ability to detect emerging risks in unstructured narratives. This study applies Latent Dirichlet Allocation (LDA), an unsupervised topic modelling technique, to 247 maritime accident reports to uncover latent safety themes and operational failures. The optimised LDA model identified ten key topics, including rescue coordination failures, fire and smoke hazards, towing risks, grounding incidents, communication breakdowns, and alarm system deficiencies. Model performance was validated using coherence (0.55), topic diversity (0.68), and perplexity (183), confirming both interpretability and predictive reliability. High-frequency topics such as emergency response and onboard fires reveal gaps in preparedness and crew training. Low-frequency but high-impact issues—such as alarm failures—highlight critical overlooked vulnerabilities. This study offers a scalable, data-driven approach that complements traditional safety frameworks, enabling more effective risk prioritisation, targeted interventions, and resource allocation. Although limited by the subjectivity of narrative reports and absence of structured technical data, the findings provide a robust foundation for integrating multi-source datasets in future research. The approach supports more informed and proactive safety management across the global maritime industry. © 2025 Informa UK Limited, trading as Taylor & Francis Group.
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    Article
    Evaluation of the Potential Hazards of Ship-Generated Waste in Maritime Industry Using a Type-2 Fuzzy Analytical Hierarchy Process
    (Univ Buckingham Press, 2020) Celik, E.; Soner, O.; Akyuz, E.; Arslan, O.
    Ships create a large amount of pollutions to marine and coastal environment where its pollutants have negative effects to human and maritime habitat. Depending on the nature of ship-generated waste, rules and regulations determine discharging procedures. This paper focuses on evaluating of potential hazards of ship-generated wastes on the environment whether it may be discharged into the sea or disposed of on port facilities. Thus. marine and costal environmental effects can be discussed analytically to improve human and ecological health. To achieve this purpose. analytic hierarchy process (AHP) extended with interval type-2 fuzzy sets (IT2FSs) is used. While AHP method is used for prioritizing the potential ship-generated waste, the IT2FSs deal with uncertainty and vagueness in the process of obtaining expert decision. Beside assessment of the environmental impacts, the paper contributes to enhance coastal and marine environmental awareness with respect to the ship-generated waste.