汽车产业——21世纪初中国的主导产业

本文运用主导产业理论，阐述了汽车产业成为中国主导产业的条件和原因，及这一主导产业将对中国经济带来的巨大推动作用，而政府的积极干预将有力促成其发展和升华。     

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.     

商船防海盗装置开发

介绍自行开发的商船防海盗装置.利用热释原理,采用多媒体、图像处理和计算机等技术,将视音频信号转化为数字信号,动态实时地监控船舶及其周围状况.该装置由传感器、信号传输装置、主控制器和报警执行机构等组成.系列产品具有支持多路视音频,全天候实时动态侦测及联动自动报警,实时数据库管理、操作多级管理、操作日志与报警日志管理等功能.     

雪峰山隧道3号竖井天井施工

雪峰山隧道3号通风竖井采用“中心扩孔”施工方法，用钻机进行天井施工．充分利用了机械配套设施，保证了深竖井施工工期、投资、安全、环保，介绍了天井施工方案、施工方法。     

Statistical Approaches to Mapping QTL of Dynamic Traits

Dynamic traits are those that change with timein the development process of life or other quanti-tative factor (e. g. environmental condition).These traits also are called infinite-dimensionalcharacters by Kirkpatrick and Heckman[1]andfunction-valued traits by Pletcher and Geyer[2], be-cause they can be expressed as a function of someindependent and continuous variables. Dynamictraits are collected at many time points during thecourse of life. Therefore, studies of dynamic traitsare regarded…     

星马给我们的启示

最近,安徽星马集团成为业内关注的焦点。受关注的原因是2005年星马集团旗下的华菱重卡销量超过4 000台。国务委员周永康、科技部部长徐冠华等领导先后到星马集团视察,对星马集团所取得的成绩给予了充分肯定。     

Shape Optimization of Elliptical Road Containers Due to Liquid Load in Steady-State Turning

A numerical analysis of liquid load in elliptical road containers undergoing a steady-state turning manoeuvre is presented for containers of unrestricted size and for containers of fixed capacity. The liquid load is expressed in terms of the horizontal and vertical forces and the overturning moment created by these forces around the middle bottom point of the container. The moment is obtained by integrating the liquid free-surface equation and using numerical calculation of the resulting expressions. An optimization study with an objective to minimize the peak overturning moment is performed on containers of fixed capacity to identify the optimal height/width ratio of the container. The results of this investigation being of a general nature, i.e. with no restriction for an application, are particularly intended for road tankers under a steady turning manoeuvre, where they can be applied with high degree of accuracy.     

现代高速列车座椅乘坐舒适性设计综述

为适应我国铁路向高速化，舒适化方向发展的趋势，研究了列车座椅舒适性设计的原理，分析座椅结构形式，设计出适合我国人体尺寸在第５％ ～９５％ 分位人体尺寸之间乘坐舒适的座椅结构几何参数。     

舰船模块化设计中信息集成化的数据信息模型研究

介绍了产品集成信息模型的基本框架和用STEP标准建立构件模型和装配模型的方法，并以球面隔壁为对象给出构件模型和装配模型的实例。     

摩擦焊接工艺在全浮式汽车半轴制造中的应用

介绍了国内汽车半轴生产所采用的三种型式——锻造式半轴、分体式半轴及摩擦焊接式半轴。对摩擦焊接式半轴的生产工艺、摩擦焊接结合机理、生产设备及应用特点等作了介绍，为我国中小型汽车企业在工艺水平方面提供借鉴。