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Study on Microstructures and Properties of Electro Brush-plating Composite Coatings

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材料热处理学报 2004年第5B期25卷 1133-1136页

作者： GUZhuo-ming HUANGWan-juan shanghaimaritimeuniversity ShanghaiChina

In this paper, composite coatings were prepared using improved electro brush-plating, and the possibility and feasibility of obtaining of composite coatings with various hard dispersion paticles (C^Os. SiC, ZrO, A^Ojetc.) were *** microstructure, constitution, microhardness and wear resistance were examined. The results show *** brush-plating composite coatings have finner microstructures and higher microhardness and wear-resistance than ordinary electro brush-plating *** research results can be used in repairing and surface strengthening of worn machine parts,and have practical uses.

关键词：显微结构电刷镀复合涂层硬颗粒磨损性能

TESTS AND APPLICATIONS OF A BOUSSINESQ MODEL WITH AMBIENT CURRENT

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Journal of Hydrodynamics 2010年第4期22卷 526-536页

作者： ZHANG Hong-sheng WANG Wei-yuan FENG Wen-jing WANG Ya-ling YANG Jian-min State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200240 China shanghai Water Planning and Design Research Institute Shanghai 200232 China College of Transport and Communications Shanghai Maritime University Shanghai 200135 China

A new type Boussinesq model is proposed and applied for wave propagation in a wave flume of uniform depth and over a submerged bar with current present or absent,***,for the propagation of monochromatic incident wave with current absent,the Boussinesq model is tested in its complete form,and in a form without the introduction of utility velocity *** is validated that the introduction of utility velocity variables can improve the characteristics of velocity field,dispersion and *** versions of the Boussinesq models are of higher accuracy than the fully-nonlinear fourth-order model,which is one of the best forms among the existing traditional Boussinesq models that do not incorporate breaking mechanism in one ***,the Boussinesq model in its complete form is applied to simulating the propagation of bichromatic incident waves with current present or absent,respectively,and the modeled results are compared to the analytical ones or the experimental *** modeled results are reasonable in the case of inputting bichromatic incident waves with the strong opposing current present.

关键词： Boussinesq model ambient current wave-wave interactions velocity field bichromatic incident waves

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基于Petri网的航运业务流程的仿真优化

系统仿真学报 2001年第6期13卷 767-771页

作者：施欣上海海运学院上海200135

论文利用Ｐｅｔｒｉ网理论及相关的仿真软件，对航运业务流程进行了模拟优化分析。通过研究，得出的主要结论是：航运业务流程的优化对提高航运企业的管理效率和水平是十分重要的。在这方面，Ｐｅｔｒｉ网理论和相应的仿真软件（ＥｘＳ... 详细信息

论文利用Ｐｅｔｒｉ网理论及相关的仿真软件，对航运业务流程进行了模拟优化分析。通过研究，得出的主要结论是：航运业务流程的优化对提高航运企业的管理效率和水平是十分重要的。在这方面，Ｐｅｔｒｉ网理论和相应的仿真软件（ＥｘＳｐｅｃｔ）提供了一个非常有效的优化分析工具；航运业务流程作为物质流和信息流的紧密结合，其优化管理的关键在于引入信息技术，以提高业务信息传递和处理的效率。

关键词：航运业务流程 Petri网仿真优化交通运输企业

模糊随机需求条件下三级供应链的数量折扣协调策略

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上海交通大学学报 2010年第12期44卷 1672-1677页

作者：汪传旭蒋良奎上海海事大学经济管理学院上海200135 上海海事大学文理学院上海200135

为了分析模糊随机需求条件下三级供应链协调策略,考虑提前期内需求为模糊随机变量,建立由供应商、制造商和零售商所组成的三级供应链优化决策和数量折扣协调模型,其中订单量、再订货点为决策变量.首先推导出提前期内需求为模糊随机变量... 详细信息

为了分析模糊随机需求条件下三级供应链协调策略,考虑提前期内需求为模糊随机变量,建立由供应商、制造商和零售商所组成的三级供应链优化决策和数量折扣协调模型,其中订单量、再订货点为决策变量.首先推导出提前期内需求为模糊随机变量条件下的各成员成本和供应链总成本函数,然后设计相应的算法对模型进行求解,最后通过算例验证了模型的实用性,并进行比较分析.结果表明:采用数量折扣协调策略能够降低三级供应链总成本;如果在制造商的上下游企业同时引入数量折扣策略,此时所引起的三级供应链总成本低于仅在制造商的下游企业引入数量折扣时的三级供应链总成本,亦低于未提供任何数量折扣策略时的三级供应链总成本;模糊随机需求条件下三级供应链总成本高于随机需求条件下的三级供应链总成本.

关键词：模糊随机需求三级供应链供应链协调数量折扣

A Study on Dynamic Response of Cable-Seabed Interaction

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Journal of shanghai Jiaotong university(Science) 2009年第4期14卷 443-449页

作者：王飞黄国樑邓德衡涂兴华 Merchant Marine College Shanghai Maritime University State Key Laboratory of Ocean Engineering Shanghai Jiaotong University

A numerical method is developed to investigate the dynamic response of cable-seabed interaction in this paper. The motion of cable is described by the Lumped Parameter Method, while the seabed, unlike the prevailing simplified model of elastic foundation, is modeled as an irregular continuous rigid surface with rebound and friction existing, and the forces exerted by the seabed consist of normal counterforce and isotropic tangential Coulomb friction resistance. To describe the detailed dynamic response, two coefficients are introduced by analogy with the theory of rigid body collision with friction. The cable-seabed kinematic and dynamic contact conditions are formulated subsequently, and are used to incorporate the seabed effect into the cable dynamics to produce a set of ordinary differential governing equations. In this paper, we employ 4th order Runge-Kutta method to solve these equations. Several simulation cases are presented to illustrate the seabed effect. The results show that friction and impact have a prominent influence on the statics and dynamics of the cable.

关键词： towed cable numerical simulation seabed interaction impact with friction

Comparative Analysis of Logistic Specialists in shanghai and Hong Kong

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上海海事大学学报 2004年第2期25卷 158-165页

作者： SONG Bing-liang(school of Economics and Management, SMU, shanghai 200135, china) school of Economics and Management SMUShanghai200135China

Undertaking a comparative analysis of logistics talents or experts in shanghai and Hong Kong, this paper concludes that shanghai’ s talent supply is greater than Hong Kong’s but their quality still lags behind Hong Kong’ s. Therefore, it strongly suggests that the overall system of logistics education in shanghai be urgently reformed and improved.

关键词： logistics talents education

Koszul Differential Graded Algebras and BGG Correspondence II

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Chinese Annals of Mathematics,Series B 2010年第1期31卷 133-144页

作者： Jiwei HE Quanshui WU Department of Mathematics Shaoxing College of Arts and Sciences Shaoxing 312000 Zhejiang China school of Mathematical sciences Fudan University Shanghai 200433 China

The concept of Koszul differential graded (DG for short) algebra is introduced in [8].Let A be a Koszul DG *** the Ext-algebra of A is finite-dimensional,i.e.,the trivial module A k is a compact object in the derived category of DG A-modules,then it is shown in [8] that A has many nice ***,if the Ext-algebra is infinitedimensional,little is known about *** shown in [15] (see also Proposition 2.2),A k is not compact if H(A) is *** this paper,it is proved that the Koszul duality theorem also holds when H(A) is finite-dimensional by using Foxby duality.A DG version of the BGG correspondence is deduced from the Koszul duality theorem.

关键词： Koszul differential graded algebra Koszul duality BGG correspondence

3D Digital Design of Cranes' Structures Based on Hybrid Software Architecture

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武汉理工大学学报 2006年第S1期28卷 96-101页

作者： WANG Chonghua1,LI Hua 1,2 (1.Dept. of Mechanical Engineering,shanghai maritime university,shanghai 200135,china 2.Worcester Polytechnic Institute,Worcester 01609,MA,USA) Dept.of Mechanical Engineering Shanghai Maritime UniversityShanghai 200135China Dept.of Mechanical Engineering Shanghai Maritime UniversityShanghai 200135China Worcester Polytechnic Institute Worcester 01609MAUSA

3D digital design for cranes’ structures based on hybrid software architecture of Client/Server and Browser/Server is introduced in this paper. Based on Pro/ENGINEER platform,3D parametric model family is built to allow generation of feasible configurations of cranes’ structures in Client/Server framework. Taking use of Visual C++,the second exploiting software kit provided by Pro/ENGINEER and ANSYS GUI/APDL modeling patterns,an integration method of 3D CAD and CAE is achieved,which includes regeneration of 3D parametric model,synchronous updating and analysis of FEA model. As in Browser/Server framework,the 3D CAD models of parts,components and the whole structure could also be displayed in the customer’s browser in VRML format.

关键词： digital design crane’s structure hybrid software architecture CAD/CAE integration

Face Recognition via Adaptive Image Combination

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Journal of shanghai Jiaotong university(Science) 2010年第5期15卷 600-603页

作者：于威威 College of Information Engineering Shanghai Maritime University

Dimension reduction and manifold learning are the two most popular feature extraction *** two methods focus on spatial locality as a guiding principle to find a low-dimensional basis for describing high-dimensional data,but no bases or features are more spatially localized than the original image ***,adaptive image combination is presented to represent a class by a combined *** combined sample is a linear combination of original samples in the same *** image combination (AIC) find the best combination coefficients by minimizing the intrapersonal distance and maximizing the interpersonal *** results show that AIC is effective.

关键词： face recognition feature extraction adaptive image combination (AIC)