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Park, Hyoung-Jun;Shin, Jae-Young
- Proceedings of the Korean Institute of Navigation and Port Research Conference
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- 2018.05a
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- pp.59-60
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- 2018
Busan New Port has continued to expand its capacity to handle transshipment cargos exceeding 50 percent of its total volume, but it is considered inefficient because of the work scheduling based on the worker experience. In particular, depending on the transshipment task situation, which often requires an external truck, excessive congestion caused by the vehicle's delay can lead to increased logistics costs and social costs. One way to resolve this issue is to minimize the single transport of the truck and to maximize dual-cycle transport by putting the finished truck into another task. Therefore, we would like to study how to efficiently schedule transportation transshipment cargos between terminals considering dual-cycle.
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Kim Do-Hyeon;Kim Kwang-Baek;Cha Eui-Young
- Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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- 2006.05a
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- pp.788-791
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- 2006
Fuzzy theory has been used effectively to control the nonlinear system since Mamdani successively adopted fuzzy theory in the steam-engine control problem in 1973. Truckbacker-upper control problem originally proposed by Nguyen and Widrow become a standard highly nonlinear control problem. In this paper, we designed adaptive fuzzy membership functions for speed control as well as steering control. In other words, an adaptive fuzzy control system for truck backer-upper problem useful for practical adaptation is proposed. Experimental results by simulations prove the effectiveness of the proposed system.
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Jin, Kyung Seok;Han, Man Yop
- KSCE Journal of Civil and Environmental Engineering Research
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- v.33 no.4
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- pp.1261-1270
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- 2013
The current domestic design criteria of live load employs DL-24 load and DB-24 load. Particularly for long span bridges above 45meters, DL-24 load is forced to apply and design them, since the shearing force and the moment of DL-24 load appears more dominate than those of DB-24. But it appeared that this DL-24 load didn't meet the vehicles traveling load, which affected bridges in real use. Hence this paper defined ML-24 load similar to the load applied to real bridges and also defined a new live load model, RL-24 load, after adjusting the existing DL-24 load, which doesn't meet the moment and the shearing force of ML-24. As the result of applying and reviewing RL-24 load to simple bridges of span of 45~60m, the results satisfying both the moment and the shearing force applied to bridges in real use by traveling load were attained. Besides, the applicability of it was examined in comparison with live load models of home and abroad.
https://doi.org/10.12652/Ksce.2013.33.4.1261 인용 PDF KSCI