A multicriteria approach for material yard planning

Kao, Chiang; Lee, Hong Tau

doi:10.1002/(sici)1099-1360(199709)6:5<272::aid-mcda162>3.0.co;2-p

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…Kao and Lee (1996a, 1996b, 1997 had proposed models and methods for each. To increase the e ciency of operations, these four subsystems are integrated into one by coordinating the operation processes and data interfaces.…”

Section: Resultsmentioning

confidence: 99%

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Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Lee¹

2001

Marine Georesources and Geotechnology

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A multi-stage bulk materials acquisition system is examined from the viewpoint of dock operations. The whole process can be divided into four stages and treated as four subsystems: ships scheduling planning, material yard planning, dock arrangement, and material discharging. Since the structure and the complexity of each subsystem is diVerent, the solution approaches applied are also diVerent with respect to each. To increase operations eYciency and data consistency, an integration of the subsystems by coordinating the operations sequence and data communications for the four subsystems is discussed. The four subsystems are illustrated by using the material docks of China Steel Corporation, and the models developed in this research are also validated. The results indicate that the models developed are capable of deriving solutions better than the existing ones. Although the discussions are conWned to China Steel Corporation, the models can be applied to other companies with similar operations.The processes involved in the acquisition of raw materials include purchasing, transportation, and storage (see, for example, Evans, 1993). The purchasing process is related to strategy concerns such as relationships with vendors and consideration of a stable or sustainable materials supply, and the transportation and storage processes are related to the issues of operations and cost. The weight and volume of bulk materials are usually larger than those of processed material. Transportation by ships is the general means of obtaining bulk materials from overseas, and factories usually do not possess ships themselves. Rental costs are very high; if the ships' arrival times at the docks are not managed appropriately, demurrage for having to wait for berthing incurs a greater operating cost. Scheduling will depend on the kind of material carried and the dock situation related to the previous ships berthed. The tools and timing for transporting bulk material have to be arranged beforehand, 207

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Section: Resultsmentioning

confidence: 99%

“…3. The material yard planning subsystem uses a multicriteria approach to determine the locations where the material should be stored (Kao and Lee, 1997). 4.…”

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Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Lee¹

2001

Marine Georesources and Geotechnology

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“…The simulation approach to the ship berthingunloading-belt transportation-yard management has been implemented by several authors (Kao and Lee 1997, Suh and Lee 1998, Cordeau et al 2005, Cortes et al 2007. Explicitly modelling the occurrence of uncertain variables and quantifying their impacts on performance has improved the accuracy of the overall plan and helped with the preparation of contingency plans.…”

Section: Previous Researchmentioning

confidence: 99%

An integrated modelling approach for raw material management in a steel mill

Seong

Suh

2011

Production Planning & Control

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An integrated modelling approach combining optimisation models with simulation is proposed for coordinated raw material management at steel works throughout the whole supply chain management process. The integrated model is composed of three components: ship scheduling, yard operation simulation and material blending models. The ship scheduling model determines which brands, how much and when they should be arrived, and the problem is modelled as mixed integer linear programming. The simulation model is used to simulate the whole processes from ships' arrivals to the retrieval of the materials through the berthing and unloading the raw materials. Finally, the raw material blending model is developed for determining the brand and quantity of raw materials to be used. The proposed integrated modelling approach for raw material management has been successfully implemented and applied at steelwork to provide shipping schedules and predict future inventory levels at stock yards. By coordinating all the activities throughout the entire raw material supply chain management process, this article proposes an integrated approach to the problem and suggests a guideline by the appropriate simplification. The quantitative nature of the optimisation model and simulation facilitates an assessment of the risk factors in the supply chain, leading to an evaluation of a wide variety of scenarios and the development of multiple contingency plans. Further research is expected to supplement the ship scheduling models with heuristics for the idiosyncratic constraints of maritime transportation.

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Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Lee

2001

Marine Georesources & Geotechnology

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A multicriteria approach for material yard planning

Cited by 3 publications

References 9 publications

Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

An integrated modelling approach for raw material management in a steel mill

Integration of a Multi-Stage Bulk Materials Acquisition System from the Viewpoint of Dock Operations

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