Development of City Transport System and Two-wheel Vehicles

Based on the study on the city transport systems of some typical cities worldwide, this paper put forward that each city transport system has its own development mode, which is influenced by the city development plan, economic development level, traveling vehicle composition etc.. When some problems occur, such as the congestions caused by contradiction between the road capacity and vehicle composition, the city transport system may come into temporary maturity period. If the improvement for road system is limited meanwhile, optimized structure of vehicle composition should be an effective solution in this case. With the development of economy-internationalization, the development speed of city transport modernization is rapid. When traveling easiness is conflicting with efficiency, the advantages of public transport system become more obvious. Correspondingly, the superiority of two-wheel vehicles will reappear. Though the important function of two-wheel vehicles for alleviating city traffic problems i     

搅拌磨超细粉磨金精矿工艺的优化

研究了搅拌磨超细粉磨金精矿的工艺,考察了主要参数对粉磨效果的影响.结果表明,通过优化磨矿过程中各种影响因素,可以获得细度-20μm＞99%的金精矿产品.     

嬗变:影视艺术的文化特性思考

在商品化、市场化日益推进的今天，影视化以其特有的“亲和力”迅速“笼络”人心，解构并重塑着观众已的思维理念和价值判断。同时，其自身的角色变得奇特而又模糊，进而升华为自身坐标的多元化，逐渐“陌生化”并背离其原来的轨道定位，并在其运动演变中产生嬗变。这种影视化的嬗变主要体现在以下三个层面：作为化本身层面的嬗变，作为商品价值层面的嬗变，作为意识形态层面的嬗变。     

概率门量子进化算法

量子进化算法(QEA)比传统进化算法(EA)有更好的种群多样性和全局寻优能力，但它采用概率操作过程，具有随机性和盲目性．将量子进化算法中的旋转门以概率门代替，在概率分析及实例验证的基础上，说明概率门量子进化算法(PGQEA)能使得对种群选取过程控制在全局优化的方向下，并且能更快地收敛于最优解。     

Multi-Echelon Inventory Model with Emergency Lateral Transshipments

In multi-echelon inventory systems, since neighboring retailers are located at shorter distances than the supplier, a retailer may seek stock from them when it is out of stock, that is, emergency lateral transshipments between retailers are commonly practiced to provide improved order fill rate. In this paper, we develop a continuous review multi-echelon model for consumable products when emergency lateral transshipments between retailers are allowed. Approximations are derived for the expected level of cost and order fill rate of retailers. Simulations conducted to test the validity of the approximate analytical model indicate that it performs very well in the cases where fairly high service levels are required. Numerical examples are also presented to illustrate the effects of emergency lateral transshipments on the performance criteria of inventory systems. The results indicate that emergency lateral transshipments will lead to a significant increase in the retailer order fail rate and this initiative is most suitable for items with a high penalty cost, or where lost sales are likely.     

基于模糊反馈校正的广义预测控制

针对具有纯时滞和非线性的复杂系统，提出一种基于广义预测控制和模糊反馈校正相结合的控制策略，目的在于抑制模型失配的影响，增强广义预测控制的鲁棒性，建立一种适于实时生产过程的控制方法。仿真结果表明了这一算法的有效性。     

正交试验遗传算法及其在函数优化中的应用

针对遗传算法参数多且配置困难的问题，本文提出一种利用正交试验优化选择参数的方法，它使得对于不同领域的优化问题只需用正交试验进行一次参数配置，然后用遗传算法进行具体寻优即可取得较好效果。这种正交试验遗传算法易于编程实现且在一定程度上避免了遗传算法参数配置的盲目性。     

电站锅炉一体化仿真环境

提出一套基于ＰＣ机的用于电站锅炉仿真研究的一体化仿真环境，该仿真环境支持从资源管理、模型开发到仿真实验的各个阶段，它的开发与实现为方便、有效地对电站锅炉这一复杂系统的仿真研究了提供了一套先进实用的工具，对这一系统的实际应用表明完全达到了预期的目的．     

在悬崖边舞蹈的灵魂--试论弗吉利亚·吴尔夫的死亡意识

弗吉利亚·吴尔夫由于其特殊的生活经历和独特的个性,一生都处在生与死的纠缠之中.一方面,死亡的意念挥之不去,另一方面,她又与这种意念不懈地抗争.生存还是毁灭的思考成为她作品的重要主题,同时她也力图通过创作探寻到存在的终极意义.     

人机系统中人的失误机理辩识的可靠性分析方法

本文基于人机系统中人行为形成因子内涵的界定和人的差错元概念的定义,从系统的角度出发,对人的失误机理进行了辩识,依此揭示出人失误的原因与三类认知行为单元的关系,并且分析了人在差错状态下的不同恢复过程及其结构方式;最后,文中对现有的几种典型的人可靠性分析方法进行了评述,指出人机系统中人的失误机理辩识的可靠性分析方法研究的发展方向.