除尘器区低温省煤器烟道数值模拟

为实现除尘器区低温省煤器的节能改造,基于FLUENT6.3软件,对除尘器区低温省煤器烟道的流场进行数值模拟研究。研究结果表明:除尘器前烟道内流场严重不均,转弯处有明显的高速区与漩涡区,局部速度高达32 m/s;加装低温省煤器后,两低温省煤器内流场不均,最大速度偏差系数达79.3%,严重影响低温省煤器的换热效果,同时会磨损、冲刷低温省煤器管路,危及低温省煤器的安全;除尘器入口处出现大面积的低速区域,导致进入除尘器后流场紊乱、除尘器电耗高、除尘效率低等现象,除尘器前烟道内整流消涡可以根治除尘器工作效率的问题。     

国际强势文化单向流动的哲学思考——述评阿多尔诺的文化工业论

阿多尔诺根据否定辩证法提出了文化工业论。阿多尔诺认为,现代资本主义社会的文化艺术已经商品化,这种商品化的文化艺术虽然具有“大众性”和“普遍性”,但是,在这种“大众文化”中,艺术却丧失了自己批判的、否定的功能。这种大众文化所形成的强势文化具有削弱人们的进取心和改造人们心灵的社会功能,强势文化在全球化大潮带动下,愈发展现出其凌厉攻势和强大的社会影响力和冲击力,试图实现其文化征服世界的目标。     

我国第三产业发展滞后的原因及结构调整

服务的提供过程就是购买者对服务产品的消费过程,服务业要求生产与消费保持时空的同一性。该产业交易过程的这种特殊性,限制了生产要素在区域之间灵活的流动性,导致服务业市场的区域化。我国第三产业滞后的原因,首先在于缺乏高素质的劳动力,其次是服务业企业落后的生产经营方式导致产业效率低下,最后是现行管理体制不利于企业跨地区开展生产经营活动。推动第三产业发展,政府应该通过制度创新,解决产业发展过程中面临的技术、管理和制度的障碍,降低生产服务业的经营成本。     

中日韩FTA贸易潜力研究

后金融危机时期,中日韩区域经济合作机制迈向一个新的发展阶段.中日韩三国签署国际投资协定,自由贸易区建设势在必行.本文基于较长时间跨度（1992-2011年）中日韩三国区域内贸易数据,研究三国区域内贸易总量和贸易产品结构,运用拓展贸易引力模型重点研究中日韩FTA贸易流量与发展潜力问题,实证研究结论对于加速中日韩自由贸易区建设进程,提升三国经贸合作水平具有重要意义.     

网络环境对财务风险预警系统的影响

近年来，随着网络在财务管理工作中的应用，财务风险发生了显著的变化。建立网络环境下的财务风险预警系统已经迫在眉睫。我国对这一领域的研究无论在理论上还是在实践上都较薄弱，财务预警管理也是我国企业迫切需要解决的问题。     

强化学习型匝道控制模型的研究

高速公路上的交通堵塞造成了道路利用效率低下，并伴随着能源消耗和环境污染问题，因此各种各样的高速公路控制方法应用于缓解交通堵塞。本文提出强化学习型匝道控制模型，该模型以交通流模拟为预测工具，以人工智能的强化学习为最优化选择模型，并具有一定的自主性、有记忆功能和性能反馈功能，且是一种动态的过程。应用JAVA针对不同的交通状态进行模拟再现，模拟结果表明匝道控制模型对于减少交通堵塞具有显著的效果。     

Adaptive agent-based manufacturing control and its application to flow shop routing control

The manufacturing industry is currently facing unprecedented challenges from changes and disturbances. The sources of these changes and disturbances are of different scope and magnitude. They can be of a commercial nature, or linked to fast product development and design, or purely operational (e.g. rush order, machine breakdown, material shortage etc.). In order to meet these requirements it is increasingly important that a production operation be flexible and is able to adapt to new and more suitable ways of operating. This paper focuses on a new strategy for enabling manufacturing control systems to adapt to changing conditions both in terms of product variation and production system upgrades. The approach proposed is based on two key concepts: (1) An autonomous and distributed approach to manufacturing control based on multi-agent methods in which so called operational agents represent the key physical and logical elements in the production environment to be controlled – for example, products and machines and the control strategies that drive them and (2) An adaptation mechanism based around the evolutionary concept of replicator dynamics which updates the behaviour of newly formed operational agents based on historical performance records in order to be better suited to the production environment. An application of this approach for route selection of similar products in manufacturing flow shops is developed and is illustrated in this paper using an example based on the control of an automobile paint shop.     

Improving traceability in continuous processes using flow simulations

Traceability is normally difficult to achieve in continuous processes, since there are no natural batch structures. In this article, we demonstrate flow-based simulation using process data to improve traceability in a continuous pelletising process. Using the simulation model, the engineers could test the impacts of process disturbances, identify cause and effect relations and aid control in case of process disturbances. In a field trial where the chemistry of an additive was varied during production of a special product, the simulation forecasts predicted the level of the chemical content after the plant within the errors that the engineers found acceptable.     

城市供水管网系统工况分析的研究

通过分析实际供水管网系统的特征，对管网工况分析所涉及的几个尚未解决的计算问题进行了研究，提出了用计算机进行工况分析的思路与框架，为管网运行调度及研究管网水质模型打下了良好基础．     

支持MLS的多层次嵌入式高可信软件架构

为增强安全关键系统的高可信能力,在分析高可信保障机制现状的基础上,提出了一种多层次的高可信软件架构。该架构采用时空分离思想、虚拟机技术,为基于MLS的嵌入式安全关键系统提供了一种整体解决方案。基于该架构,研究了多层次的安全和防危策略管理方法、信息流控制机制、可信软件的评估和认证方法,为安全关键嵌入式系统提供可认证的安全服务。