北太平洋冬季环境背景场分析及优选航线

根据船舶气象导航的原理以及影响航线设计的各种因素,通过对北太平洋冬季大气和海洋环境背景的特征分析,指出船舶在设计航线时,应根据气候状况、海洋环境、天气形势分析结合中短期预报充分利用有利的风、浪、流等天气和海洋条件优选航线,不仅可以规避恶劣天气、确保航行安全,而且大大节约海运时间、降低航运成本.     

我国集装箱港口发展和布局刍议

论述了世界集装箱港口的发展趋势,深入分析了我国集装箱港口发展的成就与问题,最后提出了集装箱港口的合理布局。     

中国海洋环境监测系统--海洋站和志愿船观测系统的建设与运行

中国海洋环境监测系统－海洋站和志愿船观测系统的建成和使用，为继续完善和发展我国的海洋环境立体监测系统奠定了基础，使我国海洋监测站和志愿船监测业务发生了巨大变化。文章将从技术角度介绍系统的建设情况，论述系统建设产生的效益，并根据作者的理解和多年来从事的相关科研、业务工作所积累的经验，对系统业务化运行提出几点建议。     

The analysis of tandem hull vessel motion in waves

This paper attempts to provide a better understanding of the hydrodynamic behavior of a tandem hull form in a floating production platform application where high deck payload capacity and low wave induced motions of this vessel are primary design goals. A simplified hydrodynamic analysis and a more representative radiation and diffraction theory based hydrodynamic analysis are used for wave induced forces and motions. The analysis results are compared with model test results to deduce principal features of these special purpose hull configurations. The motion responses in different wave headings evaluated from the complicated diffraction analysis are compared and discussed in some detail.     

用多波束系统对奥运帆船赛区进行水深地形测量的建议

2008年奥运帆船比赛将在青岛举行。预选赛场如何符合帆船比赛的要求?海底是否有影响运动员安全的障碍物7为此，建议对预选赛场海区进行多波束全覆盖水深地形测量。同时介绍了多波束测深系统的先进性以及在许多海洋工程中的应用。     

Risk Based Optimal Inspection and Repair Planning for Ship Structures Subjected to Corrosion Deterioration

A framework of risk based inspection and repair planning was presented to optimize for the ship structures subjected to corrosion deterioration. The planning problem was formulated as an optimization problem where the expected lifetime costs were minimized with a eonstraint on the minimum aceeptable rehability index. The safety margins were established for the inspection events, the repair events and the failure events for ship struetures. Moreover, the formulae were derived to calculate failure probabihties and repair probabilities. Based on them, a component subjected to corrosion is investigated for illustration of the process of selecting the optimal inspection and repair strategy. Furthermore, some sensitivity studies were provided. The results show that the optimal inspection instants should take place before the reliability index reaches the minimum acceptable reliability index. The optimal target failure probability is 10^-3. In addition, a balance can be achieved between the risk cost and total expected inspection and repair costs by means of the risk-based optimal inspection and repair method, which is very effective in selecting the optimal inspection and repair strategy.     

Global Geometric Analysis of Ship Rolling and Capsizing in Random Waves

The nonlinear biased ship rolling motion and capsizing in random waves are studied by utilizing a global geometric method.Thompson's α-parameterized family of restoring functions is adopted in the vessel equation of motion for the representation of bias.To take into account the presence of randomness in the excitation and the response,a stochastic Melnikov method is developed and a mean-square criterion is obtained to provide an upper bound on the domain of the potential chaotic rolling motion.This criterion can be used to predict the qualitative nature of the invariant manifolds which represent the boundary between safe and unsafe initial conditions,and how these depend on system parameters of the specific ship model.Phase space transport theory and lobe dynamics are used to demonstrate how motions starting from initial conditions inside the regions bounded by the intersected manifolds will evolve and how unexpected capsizing can occur.     

数学形态学方法在海面船目标检测中的应用

为进一步提高检测精度，提出1种将数学形态学方法应用到船目标检测数据后处理中的算法，根据该算法设计的数学形态学滤波器可以有效地消除SAR图像斑点噪声在船目标检测中造成的影响，减少船目标检测的误判，提高参数估计准确性。     

Sensitivity of extreme hydroelastic load effects to changes in ship hull stiffness and structural damping

A new hybrid method for the time-domain nonlinear simulation of the hydroelastic load effects and the peak over threshold (POT) method for the calculation of the short-term extreme responses are briefly described and applied to a flexible SL-7 class containership and a flexible liquefied natural gas (LNG) ship. Three stiffness levels, three stiffness distributions and three modal damping ratios are used to study the influence of the hull flexibility and structural damping on the short-term prediction of extreme vertical hydroelastic load effects. The results give justification for some simplified treatment of the first vertical flexible mode in early design stage when structural details are not available.     

面板局部屈曲的船体双层板架整体屈曲分析

首先应用von-Kurman大挠度薄板方程，对有初挠度的船体板进行后屈曲特性分析，以此为基础，导出屈曲后板的减缩有效宽度，进而用减综有效宽度作为双层板架中受压纵杵的带板宽度，将双层板架模型化为四边弹性转角约束的正交异性板，考虑横向剪切变形的影响，提出了一种求解双层板架临界应力的方法。