Interval type-2 fuzzy program evaluation and review technique for project management in shipbuilding

Akan, Ercan; Bayar, Sibel

doi:10.1080/17445302.2021.1950350

Cited by 7 publications

(2 citation statements)

References 52 publications

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“…In such cases, fuzzy set theory effectively handles uncertainty and provides more accurate modeling of real-world problems compared to deterministic methods by addressing uncertainty and vagueness, using approximate knowledge (Kahraman & Kaya, 2010). Zadeh's (1965) development of fuzzy set theory introduced membership functions, assigning degrees of membership within the interval [0,1] to elements therefore, thanks to the membership functions of fuzzy sets being defined for project duration in scheduling, it becomes possible to provide a wider range of feasible cluster solutions for projects operating in uncertain environments (Akan & Bayar, 2022). Therefore, effective project planning and scheduling, along with the utilization of artificial intelligence techniques such as GAs and fuzzy set theory, can significantly contribute to overcoming the challenges of shipbuilding production and optimizing resource allocation in this complex and resourceintensive industry.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Shipbuilding Production Project Scheduling Under Resource Constraints Using Genetic Algorithms and Fuzzy Sets

AKAN,

ALKAN

2023

Marine Science and Technology Bulletin

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This study explores the application of Genetic Algorithms (GA) in optimizing shipbuilding production processes in the presence of uncertain environments. The research addresses two key aspects: firstly, the integration of GA RCPSP (Resource-Constrained Project Scheduling Problem) with techniques for managing uncertainty in shipbuilding production; and secondly, the analysis of Pareto optimal solutions generated by GA to achieve optimal scheduling in the shipbuilding context. The proposed framework aims to minimize project completion time and maximize resource utilization by incorporating probabilistic models, scenario analysis to handle uncertainties. Furthermore, the study focuses on evaluating the trade-offs between project completion time, resource allocation, and cost through the analysis of Pareto optimal solutions, using visualization techniques and sensitivity analyses to support decision-making processes. The findings contribute to enhancing shipbuilding production by providing a comprehensive approach for effectively managing uncertainty, improving resource allocation, and reducing project duration through the integration of GA RCPSP and uncertainty management techniques.

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Section: Introductionmentioning

confidence: 99%

Optimizing Shipbuilding Production Project Scheduling Under Resource Constraints Using Genetic Algorithms and Fuzzy Sets

AKAN,

ALKAN

2023

Marine Science and Technology Bulletin

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“…Gemi üretimi, projenin başlangıç aşamasından başlayarak teslim aşamasına gelene kadar gözetim, denetim altında tutulması gereken ve sistematik bir mühendislik gerektiren zorlu bir süreçtir (Wang vd., 2019;Akan ve Bayar, 2021). Blok üretim, boru donatım, elektrik, izolasyon, teçhiz vb.…”

Section: Introductionunclassified

Deneme Seyri Planlamasında PERT Uygulaması

Kafalı

Genç

2021

Gemi Ve Deniz Teknolojisi

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In this study, a planning has been made for the tests to be carried out during the sea trial of a ship, which is near the end of the production process and whose factory acceptance and harbor acceptance tests have been completed. Sea trial tests and their approximate durations are derived from a real sea trial observation. The sea trial was viewed as a project in the study, and first, the tests to be carried out were accepted as an activity and listed. Then, the people who will conduct the tests are assigned as resources. Following that, the predecessor-successor relationships between the tests were investigated, and the ones that could be performed concurrently and without interfering with one another were identified. In this way, the necessary resource assignments for the tests were made and an appropriate sea trial schedule was tried to be obtained. In addition, the critical path for sea trial was determined by using the obtained schedule. Thus, the critical tests were identified. In addition, PERT (Program Evaluation and Review Technique) analysis was performed to calculate the expected value and standard deviation of the completion time of sea trial. Furthermore, probability of the different sea trial completion times are calculated with the help of the standard z table. Here, six different probability values are determined for six different sea trial times. Additionally, with a sea trial schedule prepared, the amount of work falling on each resource during the sea trial was calculated separately. Additionally, the amount of work falling on each resource is calculated separately. As in the practice in this study, it is thought that the sea trial can be completed more successfully by planning the sea trial first and acting in accordance with this plan.

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Project portfolio selection and scheduling problem under material supply uncertainty

Habibi,

Chakrabortty,

Servranckx

et al. 2024

Oper Manag Res

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Interval type-2 fuzzy program evaluation and review technique for project management in shipbuilding

Cited by 7 publications

References 52 publications

Optimizing Shipbuilding Production Project Scheduling Under Resource Constraints Using Genetic Algorithms and Fuzzy Sets

Optimizing Shipbuilding Production Project Scheduling Under Resource Constraints Using Genetic Algorithms and Fuzzy Sets

Deneme Seyri Planlamasında PERT Uygulaması

Project portfolio selection and scheduling problem under material supply uncertainty

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