ABSTRACTS

Xinjiang Section of Lanzhou-Xinjiang high- speed rail goes into service
The Xinjiang Section of the Lanzhou-Xinjiang high-speed railway has gone into service on November the 16th, marking the first high-speed service in China＇s far west. The railway, also known as the Lanxin Railway, follows the path of the ancient Silk Road. It runs over 1,700 kilometers, from Lanzhou, Gansu Province, through the Hexi Corridor, to Urumqi in the Xinjiang Uyghur Autonomous Region.     

我所船模试验设备简介

1. GENERAL OF SSSRI Under the management of the Ministry of Communications, the Shanghai Ship and shipping Research Institute (SSSRI) was established in 1962. The site of its headquarter is No. 200 Ming-sheng Road, which is on the eastern side of the Huang-pu River in Shanghai, and two branch laboratories are at Bansongyuan Road and Gaoqiao respectively.     

“一带一路”倡议下航运与贸易联动——基于DCC-MSV模型

为研究"一带一路"倡议下贸易与航运市场的联动性和波动溢出效应,采用"一带一路"贸易额指数(Belt and Road Trade Volume Index,I_(BRTV))和"海上丝绸之路"出口集装箱运价指数(Maritime Silk Road Export Container Freight Index,I_(MSRECF)),运用基于Gibbs抽样的模型参数估计法,建立一般化的动态条件相关系数多元随机波动率(Dynarnic Conditional Correlation-MSV, DCC-MSV)模型。研究结果表明:"一带一路"倡议下贸易市场和航运市场波动持续性强,集聚性明显;"一带一路"贸易额与"海上丝绸之路"集装箱运价收益率存在负相关关系,总体相关性不高;其波动性存在正的双向溢出效应,集装箱运价对贸易额的溢出效应较明显。     

SHIPPING IN CHINA

Port modernization level steps in with the world advanced;China＇s 4th tax-free zone established in Yangpu, Hainan Island;Foreign investment favors China＇s container port;Integration of Yantai ports;2600 enterprises obtain the qualification of NVOCC;Inland ore carrier/engineering vessel engaging coastal operations not allowed     

Mathematical model of small water-plane area twin-hull and application in marine simulator

Small water-plane area twin-hull（SWATH） has drawn the attention of many researchers due to its good sea-keeping ability.In this paper,MMG＇s idea of separation was used to perform SWATH movement modeling and simulation;respectively the forces and moment of SWATH were divided into bare hull,propeller,rudder at the fluid hydrodynamics,etc.Wake coefficient at the propellers which reduces thrust coefficient,and rudder mutual interference forces among the hull and propeller,for the calculation of SWATH,were all considered.The fourth-order Runge-Kutta method of integration was used by solving differential equations,in order to get SWATH＇s movement states.As an example,a turning test at full speed and full starboard rudder of ‘Seagull＇ craft is shown.The simulation results show the SWATH＇s regular pattern and trend of motion.It verifies the correctness of the mathematical model of the turning movement.The SWATH＇s mathematical model is applied to marine simulator in order to train the pilots or seamen,or safety assessment for ocean engineering project.Lastly,the full mission navigation simulating system（FMNSS） was determined to be a successful virtual reality technology application sample in the field of navigation simulation.     

Material Selection for Hawsers for a Side-by-side Offloading System

In order to provide a theoretical guide for choosing the material for the hawsers for the FPSO side-by-side offloading system, which is moored by the yoke system, the 3D potential flow theory and full coupled time-domain analysis are presented to study the dynamic response of the offloading system. The MingZhu FPSO offloading system in the field BZ25-1 is simulated here; and four different characteristic fiber ropes are used as the material for the hawsers. To acquire an accurate hawser line tension, the polynomial fitting method is used to calculate the nonlinear stiffness of the hawsers. By comparing the hawser lines＇ tension and the relative motion between the FPSO and the shuttle tanker, a suitable material for the hawser lines is chosen and discussed in this paper. The results indicate that the nonlinear stiffness characteristic of the fiber rope has a small effect on the relative motion of the vessels, but the hawser lines＇ tension is greatly influenced by the different characteristics of the fiber ropes. The hawser lines＇ tension with nonlinear stiffness is in accordance with the one with the upper and lower bound linear stiffness, which proves this method of fitting the fiber ropes＇ nonlinear stiffness is reasonable and reliable.     

Turbine speed control system based on a fuzzy-PID

The flexibility demand of marine nuclear power plant is very high, the multiple parameters of the marine nuclear power plant with the once-through steam generator are strongly coupled, and the normal PID control of the turbine speed can＇t meet the control demand. This paper introduces a turbine speed Fuzzy-PID controller to coordinately control the steam pressure and thus realize the demand for quick tracking and steady state control over the turbine speed by using the Fuzzy control＇s quick dynamic response and PID control＇s steady state performance. The simulation shows the improvement of the response time and steady state performance of the control system.     

ISS-based robust adaptive fuzzy algorithm for maintaining a ship＇s track

This paper focuses on the problem of linear track keeping for marine surface vessels. The influence exerted by sea currents on the kinematic equation of ships is considered first. The input-to-state stability （ISS） theory used to verify the system is input-to-state stable. Combining the Nussbaum gain with backstepping techniques, a robust adaptive fuzzy algorithm is presented by employing fuzzy systems as an approximator for unknown nonlinearities in the system. It is proved that the proposed algorithm that guarantees all signals in the closed-loop system are ultimately bounded. Consequently, a ship＇s linear track-keeping control can be implemented. Simulation results using Dalian Maritime University＇s ocean-going training ship ＇YULONG＇ are presented to validate the effectiveness of the proposed algorithm.     

SERVICE IN CHINA

Qingdao opens the country＇s 1st dangerous cargo control hotline;World 1st class shipping simulation center established in SMU;Port charges for ro/ro carriers suspended in the Three Gorges;     

SHIPBUILDING IN CHINA

The first national engineering laboratory of shipbuilding established;China＇s shipbuilding product structure further optimized;Ship export volume in the 1st three quarters of 2007 exceeds the total of last year;Completion volume of two shipbuilding groups takes more than half of the national total;