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101.
The P-vector inverse method has been successfully used to invert the absolute velocity from hydrographic data for the extra-equatorial hemispheres, but not for the equatorial region since it is based on the geostrophic balance. A smooth interpolation scheme across the equator is developed in this study to bring together the two already known solutions (P-vectors) for the extra-equatorial hemispheres. This model contains four major components: (a) the P-vector inverse model to obtain the solutions for the two extra-equatorial hemispheres, (b) the objective method to determine the Ψ-values at individual islands, (c) the Poisson equation-solver to obtain the Π-values over the equatorial region from the volume transport vorticity equation, and (d) the Poisson equation-solver to obtain the Ψ and depth-integrated velocity field (U, V) over the globe from the Poisson Ψ-equation. The Poisson equation-solver is similar to the box model developed by Wunsch. Thus, this method combines the strength from both box and P-vector models. The calculated depth-integrated velocity and Ψ-field agree well with earlier studies. 相似文献
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D. K. Y. Chu 《Maritime Policy and Management》1979,6(4):293-303
Projections of the future traffic demand of British seaports are of great importance to port management bodies because of the huge capital investment required for installing modern port facilities. In this paper, the author uses a first order Markov Chain model to forecast the non-fuel cargo traffic demand of the major British seaports in 1980 and 1985. 相似文献
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This study looks at the degrees of interference for multiple cranes that work simultaneously at six major container terminals in the port of Kaohsiung. The results confirm that there are different degrees of mutual crane interference among terminals where different operational modes are adapted in the container yards. RTG handling systems show a very high value of aggregate cranes exponent f , with nearly no interference, as long as the number of allocated cranes is no more than the number of truck lanes under each crane. While SC systems reveal a relatively larger degree of mutual interference as the number of cranes increase. 相似文献
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RECENTRESEARCHANDDEVELOPMENTOFPOLYMEROPTICALFIBRES*GDPeng(彭刚定)PLChu(朱柏濂)(SchoolofElectricalEngineering,Univ.ofNewSouthWales,K... 相似文献