基于复合成本的集装箱码头泊位-岸桥联合调度优化方法

针对集装箱码头泊位与岸桥调度中的资源和成本问题,考虑不确定因素的影响,采用增添缓冲时间方式,以复合成本最低为目标建立泊位岸桥联合调度优化模型,设计改进的遗传算法对模型进行求解.在案例数据分析中,比较了港口和船公司在不同成本比率下的调度结果,验证了该方法能在保证客户满意度的同时不损害码头利益,对港口生产操作决策具有一定参考价值.     

海运服务链中的运力定价和空箱调运责任研究

本文研究了单个承运商和两个货运代理在双向港口间提供往返货运服务的航运服务链。由于港口间货运需求的内在不平衡,货运公司在多港口间的空箱调运会产生巨大的空箱调运费用。分别构建了承运商承担和承运商与货运代理共同承担空箱调运的数学模型,通过数学模型和数值算例分析了不同市场条件下的空箱调运责任和运力定价策略。研究发现承运商和货运代理是否采用定价策略来平衡需求取决于双向港口间货运市场的潜在需求差异。同时,承运商与货运代理的空箱调运分摊为非此即彼策略,当空箱调运成本大于某阈值时,承运商独自承担空箱调运责任;反之,货运代理承担空箱调运责任。而且货运代理承担模式增加整个海运链的利润,但进一步加剧空箱的不平衡状况。     

微重力下圆柱形贮箱内液体晃动的分岔现象

为了得到微重力下液体晃动的特性,晃动模态用具有水平静液面的液体晃动模态近似. 液体晃动取前5 个重要模态,用Lagrange 方程推导了横向力作用下液体晃动和航天器结构的无量纲的耦合动力学方程并进行数值模拟. 模拟了液体晃动模态随外力振幅和频率变化产生的分岔现象,并分析了系统参数,如Bond数、接触角、接触角迟滞、充液高度、频率比、质量比以及外力的周期形式和方向等对晃动模态的分岔的影响.     

Allosteric Control of Naphthalene Diimide Encapsulation and Electron Transfer in Porphyrin Containers: Photophysical Studies and Molecular Dynamics Simulation

The complexation processes of N,N’-dibutyl-1,4,5,8-naphthalene diimide ( NDI ) into two types of π-electron-rich molecular containers consisting of two Zn(II)-porphyrins connected by four flexible linkers of two different lengths, were characterized by means of absorption and emission spectroscopies and molecular dynamics simulation. Notably, the addition of NDI leads to a strong quenching of the fluorescence of both cages only when they are in an open conformation suitable for guest encapsulation, a situation triggered by silver(I) ions binding to the lateral triazoles. Molecular dynamics simulations confirm the fast binding of NDI , likely assisted by NDI -silver(I) interactions. Upon NDI complexation, the two porphyrin macrocycles get closer, with an optimized face to face orientation, suggesting an induced-fit mechanism through π–π interactions with the NDI aromatic cycle. Ultrafast transient absorption experiments allowed to identify the process of quenching of the Zn-porphyrin fluorescence as an efficient photoinduced electron transfer reaction between the cage porphyrin and the included NDI guest. The process occurs on fast and ultrafast time scales in the two complexes (1.5 ps and ≤300 fs) leading to a short-lived charge separated state (charge recombination lifetimes in the order of 30–40 ps). The combined computational and experimental approach used here is able to furnish a reliable model of the NDI -cage complexation mechanism and of the corresponding electron transfer reaction, attesting the allosteric control of both processes by the silver(I) ions.     

Interaction of liposomes with silica nanocapsules: from lipid bilayer coating to multi-liposomal composites

A new delivery system has been developed that combines liposomes and silica nanocapsules. It was found that in the presence of cationic unilamellar liposomes, silica nanocapsules are instantly coated with a lipid bilayer. In contrast, cationic stealth liposomes modified with polyethylene glycol can adsorb on the surface of silica to form multi-liposomal composites in which the liposomes remain intact.     

圆柱空腔内涡破裂的LDA三维流动测量

针对旋转圆柱空腔内旋转流场泡状涡破裂现象,设计了实验装置,分析了实验系统中光路设置、折射率补偿、示踪粒子选择等关键问题的处理方法,采用激光多谱勒速度测量技术ＬＤＡ（ＬａｓｅｒＤｏｐｐｌｅｒＡｎｅｍｏｍ ｅｔｒｙ）进行测量,给出了圆柱空腔内子午面上二维速度全场和涡破裂区域的内部三维流动测量结果． 同时给出的数值计算模拟结果和实验测量结果非常吻合．     

宁波港集装箱码头装卸桥规模研究

运用排队理论对宁波港集装箱码头的通过能力进行了测算,比较了装卸桥数量、装卸效率、非生产性作业时间等因素变化后码头的表现,提出了宁波港集装箱码头装卸桥配置的方案．     

宁波港北仑深水港区船型论证

本文从船舶运营的角度,论证了各种类型船舶的经济性,推荐了散货和集装箱船的预测最佳船型.并将此与优越的自然条件加以综合考虑,认为宁波港北仑港区应建设成为长江三角洲的深水港.     

圆柱空腔内旋转流动中轴对称涡破裂现象的数值模拟

对于上端盖旋转圆柱空腔内旋转流动来说,当流动达到一定条件时,就会出现旋涡破裂现象。目前针对这种现象已经进行了大量的稳态和非稳态实验测量,获得了精确的实验数据。采用数值模拟方法,重现了涡破裂现象及其发生发展过程,同已经发表的相关实验数据进行了比较