Boosting Chin Maritime Strategy

Authorized by the competent authority, CCS is the sole professional organization to carry out classification and statutory survey and notarial certification of ships and offshore oil and gas projects. CCS' rule and standard system for offshore installations has experienced 30 years, from none to possessing rules, from statutory and classification survey to competing for notarial certification, and from offshore to deep sea. In recent years, with the quickening of Chinese offshore oil and gas resources exploration, the rule and standard system of CCS has been strengthened and improved continuously.     

ABSTRACTS

Prospects of China-Africa economic and trade cooperation
Chinese Premier Li Keqiang started a four-country visit to Ethiopia, Nigeria, Angola and Kenya, on May 4 to 11. The visit, to further deepen China-Africa relationship and to further expand China-Africa trade and economic cooperation, is of great significance, having also had larger repercussions in the world. Li visited the four countries, meeting the presidents respectively and focusing on ways to strengthen cooperation in trade, investment, infrastructure development, energy, finance, agriculture, aviation, space technology, information and communication. Bilateral trade between China and African countries reached $210 billion in 2013.     

2013年国际船舶与海洋工程会议(英文)

Zurich,Switzerland,January 14-15,2013 The XXXIV.International Conference on Marine and Naval Engineering aims to bring together leading academic scientists, researchers and scholars to exchange and share their experiences and research     

质量比对于柔性圆柱体流激振动的影响（英文）

The effect of the mass ratio on the flow-induced vibration(FIV) of a flexible circular cylinder is experimentally investigated in a towing tank. A Tygon tube with outer and inner diameters of 7.9 mm and 4.8 mm, respectively, was employed for the study. The tube was connected to a carriage and towed from rest to a steady speed up to 1.6 m/s before slowing down to rest again over a distance of 1.6 m in still water. Reynolds number based on the cylinder's outer diameter was 800–13,000, and the reduced velocity(velocity normalized by the cylinder's natural frequency and outer diameter) spanned from 2 to 25. When connected, the cylinder was elongated from 420 mm to 460 mm under an axial pre-tension of 11 N. Based on the cylinder's elongated length, the aspect ratio(ratio of the cylinder's length to outer diameter) was calculated as 58. Three mass ratios(ratio of the cylinder's structural mass to displaced fluid mass, m*) of 0.7, 1.0, and 3.4 were determined by filling the cylinder's interior with air, water, and alloy powder(nickel-chromium-boron matrix alloy), respectively. An optical method was adopted for response measurements. Multi-frequency vibrations were observed in both in-line(IL) and cross-flow(CF) responses; at high Reynolds number, vibration modes up to the 3rd one were identified in the CF response. The mode transition was found to occur at a lower reduced velocity for the highest tested mass ratio. The vibration amplitude and frequency were quantified and expressed with respect to the reduced velocity. A significant reduced vibration amplitude was found in the IL response with increasing mass ratios, and only initial and upper branches existed in the IL and CF response amplitudes. The normalized response frequencies were revealed to linearly increase with respect to the reduced velocity, and slopes for linear relations were found to be identical for the three cases tested.     

2016年第3届海岸和海洋工程国际会议（英文）

<正>April 8-9,2016,Tokyo,Japan The 2016 3rd International Conference on Coastal and Ocean Engineering(ICCOE 2016)will be held during April 08-09,2016 in Tokyo,Japan.ICCOE 2016,is to bring together innovative academics and industrial experts in the field of Coastal and Ocean Engineering to a common forum.The primary goal of the conference is to promote research and developmental activities in Coastal and Ocean Engineering.Another goal is to promote     

3D Track-keeping Method for Autonomous Underwater Vehicle

In this paper, 3D track-keeping control method for autonomous underwater vehicle (AUV) with and without the influence of ocean current is investigated. Because the system to be controlled is highly nonlinear and strong coupled, an approach is used to divide it into two subsystems. One is to control the heading and the track error on the horizontal plane. The other is to control the pitch and the track error on the vertical plane. The results of computer simulation show that the autopilot works properly, it can capture the current waypoint and turns to track the next path automatically.     

CHINA’S MARKET CLIMATE AND THE ECONOMIC PROSPECT AFTER ITS WTO ACCESSION

Reform and opening up to the outside world constitutes a basic long-term state policy that China adheres to 20 odd years' reform and development has brought about profound changes to the Chinese economy. First, China has transformed from a planned economy to a     

Profile of China Ship Development and Design Center （CSDDC）

China Ship Development and Design Center （CSDDC） is one of the leading institutes engaged in the development and overall design of ships, submersibles and marine structures. With a history of over forty years, CSDDC has made great efforts to import and incorporate international advanced technologies and adapt them to its own actual projects. This enables CSDDC to remain the leading position in ship overall design in China. Over the past forty years, CSDDC has successfully accomplished many national key projects, and made significant contributions to the modernization of China defense and built up a reputation of ＂Cradle of China naval ships＂.     

A method based on potential theory for calculating air cavity formation of an air cavity resistance reduction ship

This research is intended to provide academic reference and design guidance for further studies to determine the most effective means to reduce a ship’s resistance through an air-cavity. On the basis of potential theory and on the assumption of an ideal and irrotational fluid, this paper drives a method for calculating air cavity formation using slender ship theory then points out the parameters directly related to the formation of air cavities and their interrelationships. Simulations showed that the formation of an air cavity is affected by cavitation number, velocity, groove geometry and groove size. When the ship’s velocity and groove structure are given, the cavitation number must be within range to form a steady air cavity. The interface between air and water forms a wave shape and could be adjusted by an air injection system.     

A method based on potential theory for calculating air cavity formation of an air cavity resistance reduction ship

This research is intended to provide academic reference and design guidance for further studies to determine the most effective means to reduce a ship’s resistance through an air-cavity. On the basis of potential theory and on the assumption of an ideal and irrotational fluid, this paper drives a method for calculating air cavity formation using slender ship theory then points out the parameters directly related to the formation of air cavities and their interrelationships. Simulations showed that the formation of an air cavity is affected by cavitation number, velocity, groove geometry and groove size. When the ship’s velocity and groove structure are given, the cavitation number must be within range to form a steady air cavity. The interface between air and water forms a wave shape and could be adjusted by an air injection system.     

The gender perspective in maritime education and training

The aim of this article is to show if and how European maritime education and training institutions have met the increasing enrolment of women, and how shipping in general has reacted to gender equality. WMU has partly been the source for finding data related to studies in a multicultural and gender (minority) mixture of students and professors. In addition to a questionnaire to maritime education and training institutions, unstructured conversations with WMU students and professors have contributed to fact findings. Apparently, there is more to be done in order to have women compete on a level playing field in the sphere of shipping. Shipping is historically male dominated and conservative, so it is well understood that there are ropes to be untied. In this article, there are examples on how stakeholders in society have introduced policies on how to meet diversities. It is recommended that universities seriously pursue this trend. I wish to appeal to educational institutions to publish a university policy on the gender perspective and diversity management in general. The policy must be in writing in order for staff and students to understand and remember the content of the policy. This is an issue that should follow the quality assurance aims and goals and should be posted in a public place within the university’s premises for everybody to be reminded.     

广西海岸的开发

中国目前致力建设和谐社会使我想尽绵薄之力在自己熟悉的领域提供一些资讯,能让全国青少年及一般老百姓有休闲度假的地区;同时也给国内一些热衷于此行业投资的人士一些参考,避免不当的投资、破坏国土和浪费国力。[编者按]     

导弹贮存可靠性评定研究

导弹贮存可靠性是一项重要的战术技术指标。通过分析贮存期评定方案,评定的类别,贮存失效的判据及失效评定的方法基础上,分析导弹贮存判定需要的相关途径。     

Coastal Tourist Interest in Value-Added,Aquaculture-Based,Culinary Tourism Opportunities

Despite increasing focus on sustainable aquaculture investment in the U.S. coastal zones, the aquaculture industry continues to face skepticism among consumers due to perceived negative environmental impacts, and health and food safety concerns. Partnering with culinary tourism and local food promotion efforts has potential for improving public outreach about the benefits of aquaculture, especially in coastal destinations where sustainable marine aquaculture and tourism are both occurring. Culinary tourism implies that local foods reflect the local livelihood and culture, and may be important to the tourist's experience. Aquaculture is becoming increasingly valuable to coastal destinations for assuring the steady availability of local seafood to meet demand and retaining commercial fisheries as a means to differentiate themselves to tourists. This study examined the role of subjective knowledge and attitude about aquaculture, and their effect on intention to participate in value-added culinary aquaculture tourism experiences. The study found that tourists' subjective knowledge and attitude about aquaculture influenced intentions to participate in culinary aquaculture tourism. In order for farmers or tour operators to be successful in diversifying with value-added culinary aquaculture, attention needs to be paid to educating consumers, which may be possible through strategic partnerships with tourism organizations, chefs, and restaurants.     

Quantifying uncertainty in high-resolution coupled hydrodynamic-ecosystem models

Marine ecosystem models are becoming increasingly complex and sophisticated, and are being used to estimate the effects of future changes in the earth system with a view to informing important policy decisions. Despite their potential importance, far too little attention has been, and is generally, paid to model errors and the extent to which model outputs actually relate to real-world processes. With the increasing complexity of the models themselves comes an increasing complexity among model results. If we are to develop useful modelling tools for the marine environment we need to be able to understand and quantify the uncertainties inherent in the simulations. Analysing errors within highly multivariate model outputs, and relating them to even more complex and multivariate observational data, are not trivial tasks. Here we describe the application of a series of techniques, including a 2-stage self-organising map (SOM), non-parametric multivariate analysis, and error statistics, to a complex spatio-temporal model run for the period 1988–1989 in the Southern North Sea, coinciding with the North Sea Project which collected a wealth of observational data. We use model output, large spatio-temporally resolved data sets and a combination of methodologies (SOM, MDS, uncertainty metrics) to simplify the problem and to provide tractable information on model performance. The use of a SOM as a clustering tool allows us to simplify the dimensions of the problem while the use of MDS on independent data grouped according to the SOM classification allows us to validate the SOM. The combination of classification and uncertainty metrics allows us to pinpoint the variables and associated processes which require attention in each region. We recommend the use of this combination of techniques for simplifying complex comparisons of model outputs with real data, and analysis of error distributions.     

我国海上遇险和安全通信系统价值分析

概述了海上遇险和安全通信系统(Global Maritime Distress and Safety System,以下简称GMDSS)的背景、系统构成,对系统功能、地位和作用进行了比较详细的介绍;重点分析了系统工程的价值,由此提出我国建设GMDSS的首要目的是最大限度地保障海上人命与财产安全,并对实施海洋开发具有战略意义;针对我国GMDSS存在的不足,提出了改进措施,为我国GMDSS发展和管理的技术政策、战略、规划等宏观决策提供参考。     

基于平衡计分卡的船舶企业成本管理与控制研究

船舶制造业受全球经济影响,船市持续低迷,要想在市场中保持竞争力,获得相对成本优势异常关键。文章提出基于平衡计分卡的管理方法,尝试结合某船舶修造企业实际,运用层次分析法构建基于平衡计分卡的绩效评价体系,算出不同因素的影响权重。依据所得出的权重,突破原有的依据财务控制成本的方法,从多方面控制企业成本,旨在探索船舶企业成本管理与控制的新方法。     

浅谈粉喷桩施工监理

粉体喷射搅拌桩(简称粉喷桩)处理软土地基因有明显的经济价值和施工工期短等优点而得到广泛应用,又因施工质量不易控制而让设计者担心,有些地区对粉喷桩的推广持保留态度。本文试图将粉喷桩施工监理多年的经验作一总结,希望对粉喷桩的推广有点帮助。     

基于ALE的矿粉货物液化晃荡问题并行数值模拟

含水量较高的矿粉货物在海上运输过程中易出现液化,形成自由表面并使晃荡现象加剧,严重威胁船舶运输安全。针对船载液化矿粉晃动和舱壁冲击问题,采用ALE有限元方法对其进行了细致建模和计算模拟,从三维角度考察了在船舱一定装载率和运动状态下液化矿粉的晃荡现象和特性;同时,借助不同仿真软件,对计算结果的合理性和准确性进行了相互比对和分析。模型求解借助了高性能计算资源,以解决问题求解时间长和多组计算工况带来的大规模计算需求;结合所建计算模型特点和流固耦合特性,研究了多核环境下两种不同区域分解策略和实现方式,通过并行计算性能数据比较分析,以探求更为合理的并行加速策略。     

风电平台分段吊装计算新方法

以某国内大型风电平台上层建筑分段吊装为例，对新设计的一体式上层建筑分段进行吊装方案编制并借助有限元计算软件进行方案校核。在吊装计算中，主要从2个方面进行考虑：一是如何高质量地完成计算分析，保证计算符合实际情况，得到真实的结构响应；二是对吊装布置和加强方案进行分析，根据有限元分析结果为基地建造部门提出建议，保证吊装方案科学合理。给出一种新的有限元分析方法，并比较其与常规方法的加载方式。比较2种方法的计算结果，验证新方法可真实有效地模拟吊装的受力情况。分析结果可为造船企业今后提升海洋平台建造分段吊装工艺水平提供参考和借鉴。