• Proceedings of the KWS Conference
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• 1998.10a
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• pp.121-124
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• 1998

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2000.04a
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• pp.67-67
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• 2000

• Proceedings of the Zoological Society Korea Conference
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• 1994.10a
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• pp.236.2-236
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• 1994

No Abstract, See Full Text

• YAKHAK HOEJI
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• v.19 no.2
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• pp.65-78
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• 1975

• Proceedings of the PSK Conference
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• 2001.10a
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• pp.91-93
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• 2001

• Journal of the Chungcheong Mathematical Society
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• v.17 no.2
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• pp.205-218
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• 2004

• Gut and Liver
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• v.12 no.6
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• pp.609-610
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• 2018

• Journal of Ship and Ocean Technology
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• v.3 no.2
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• pp.17-26
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• 1999

An experimental investigation on hydrodynamic forces acting on a porpoising craft at high advanced speeds up to Froude numbers Fn=6.0(Fn=U\ulcorner:Lo\ulcorner denote overall length of ship) in calm water is performed. Captive model tests and forced motion tests are carried out to measure the hydrodynamic forces. The results show that significant nonlinear effects for motion amplitudes appear in the restoring, the added mass and the damping coefficients. The experimental results are compared with the results of a prediction method of the hydrodynamic forces include the nonlinear effects, and show a good agreement with them. A simulation using the predicted hydrodynamic forces in a nonlinear motion equation is carried out to obtain the porpoising motion of a craft in calm water. The calculated results are in fairly good agreement with experimental ones.

• Proceedings of the KIEE Conference
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• 2002.07b
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• pp.888-890
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• 2002

We derived a theory of increasing electromagnetic force acting on arc column for reducing arcing time between electric contacts. A simulation method of arc velocity is presented by calculating blowout force using 3D FEM and drag acting on arc column. This paper is proposed 3 types arc extinguish chamber of different fulx path and is presented electromagnetic force and arc velocity of each model.

• Journal of Navigation and Port Research
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• v.27 no.3
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• pp.253-258
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• 2003

To evaluate the unsteady motion in laterally berthing maneuver, it is necessary to grasp very clearly the magnitude and properties of the hydrodynamic forces acting on ship hull in shallow water. In this study, numerical calculation was made to investigate quantitatively the hydrodynamic force according to the water depth for Wigley model using the CFD (Computational Fluid Dynamics) technique. Comparing the computational results to the experimental ones, the validity of the CFD method was verified. The numerical solutions evaluated the hydrodynamic force with good accuracy, and then captured the features of the flow field around the ship in detail. The transitional lateral force in a state ranging from rest to uniform motion is modeled by using the concept of the circulation.