基于J2EE规范的教学评估系统的设计与实现

探讨了高校教学质量评估的必要性和可行性,分析了教学评估的内容设置以及评估系统的开发策略,提出了基于J2EE规范的网上教学评估系统的总体结构。最后,使用Jbuilder7+Weblogic7集成开发环境设计开发了这一系统。     

回转类零件 CAD/CAM 并行设计中的零件结构设计

主要介绍回转类零件基于ＣＡＤ／ＣＡＭ并行设计的零件结构设计方法，把参数化设计和特征拼合设计结合起来，以实现结构设计和制造信息的集成。文中叙述了基于特征的零件结构设计过程，参数化设计的基本方法，以及参数化结构设计结果向特征模型的转化的有关问题。     

面向中小型制造企业的网络化制造模式及产品协同设计模式构想

简要分析我国中、小型制造企业的生产运作过程，指出实施网络化的具体领域，提出相应的网络化系统模式；简要分析企业产品开发的一般过程，对产品协同设计的领域进行划分，提出针对中小企业的产品协同设计系统，目的是提高企业的生产运作效率和产品开发能力。     

高效柔性制造技术的新进展

以数控技术为中心的高效柔性制造技术是当前加工技术发展的主流，具有3F、3I和3S的特征。文章分析了高效化和柔性化的主要发展目标，其主要研究方向为发展适于全面高速化、过程链集约化和大批量订制化的制造装备及其系统，使之能在多品种变批量的市场需求条件下实现响应敏捷化、运行智能化和效益最优化。提出了发展快速重组制造系统及可重构制造设备作为统一高效和柔性两者要求的一个合理解决方案，并进一步探讨了可用于网络化环境的制造单元的结构体系。     

RESEARCH ON CAPP／SCHEDULING INTEGRATION MULTI-AGENT SYSTEM MODEL AND IMPLEMENTATION

A design methodology fOr multi-agent systems is proposed. The systemic framework ofCAPP and scheduling integrated multi-agent system according to design methodology is researched.Agent model, composition model and cooperation model are discussed respectively in the multi-agentsystem.Static composition model and dynamic running model of CAPP and scheduling integrated     

战略视角下考虑质量成本的质量管理集成控制

在分析现有质量成本控制缺陷的基础上,借鉴PDCA循环的思想,建立了逐步、持续改进的目标质量成本控制模型,实现了质量成本控制的及时性.从战略视角下提出了基于质量成本的质量管理集成控制模型,探讨了具体的实施步骤,有效减少了非增值活动,降低了质量成本,提高了企业的长期竞争力.     

Integration strategies of hydrogen network in a refinery based on operational optimization of hydrotreating units

Inferior crude oil and fuel oil upgrading lead to escalating increase of hydrogen consumption in refineries. It is imperative to reduce the hydrogen consumption for energy-saving operations of refineries. An integration strategy of hydrogen network and an operational optimization model of hydrotreating (HDT) units are proposed based on the characteristics of reaction kinetics of HDT units. By solving the proposed model, the operating conditions of HDT units are optimized, and the parameters of hydrogen sinks are determined by coupling hydrodesulfurization (HDS), hydrodenitrification (HDN) and aromatic hydrogenation (HDA) kinetics. An example case of a refinery with annual processing capacity of eight million tons is adopted to demonstrate the feasibility of the proposed optimization strategies and the model. Results show that HDS, HDN and HDA reactions are the major source of hydrogen consumption in the refinery. The total hydrogen consumption can be reduced by 18.9% by applying conventional hydrogen network optimization model. When the hydrogen network is optimized after the operational optimization of HDT units is performed, the hydrogen consumption is reduced by 28.2%. When the benefit of the fuel gas recovery is further considered, the total annual cost of hydrogen network can be reduced by 3.21×10₇ CNY·a_-1, decreased by 11.9%. Therefore, the operational optimization of the HDT units in refineries should be imposed to determine the parameters of hydrogen sinks base on the characteristics of reaction kinetics of the hydrogenation processes before the optimization of the hydrogen network is performed through the source-sink matching methods.     

Avoidance of partial load operation at coal-fired power plants by storing nuclear power through power to gas

The need of fast regulation of electricity production leads to a number of inconveniences occurred to the electric generation system and the electric market, especially to the nuclear power. A new concept to control nuclear power production is posed in order to allow the regulation of the electricity sent to the grid. This concept proposes the joint operation of a nuclear power plant, a coal power plant with postcombustion capture and a methanation plant. The cost effectiveness of this technology and its capability to reduce the CO₂ emissions -consumed in the methanation process- are assessed through the design and economic and environmental analysis of a hybrid facility. Mainly due to the increase of the operating hours of the coal-fired power plant, the environmental feasibility of the initial proposal seems to be limited. However, given that benefits are expected in the medium and long-term (2020–2030) for the Power to Gas facility, a future alternative use is proposed. The target of this new alternative configuration will be the storage of CO₂ together with the storage of renewable energy.     

液晶电视整机模组一体化结构优化设计

本文主要通过与传统电视结构的简单对比介绍了液晶电视整机模组的一体化结构设计的技术特征，并在原有一体化结构设计的基础上提出了一种优化结构。     

Informal learning recognition through a cloud ecosystem

Learning and teaching processes, like all human activities, can be mediated through the use of tools. Information and communication technologies are now widespread within education. Their use in the daily life of teachers and learners affords engagement with educational activities at any place and time and not necessarily linked to an institution or a certificate. In the absence of formal certification, learning under these circumstances is known as informal learning. Despite the lack of certification, learning with technology in this way presents opportunities to gather information about and present new ways of exploiting an individual’s learning. Cloud technologies provide ways to achieve this through new architectures, methodologies, and workflows that facilitate semantic tagging, recognition, and acknowledgment of informal learning activities. The transparency and accessibility of cloud services mean that institutions and learners can exploit existing knowledge to their mutual benefit. The TRAILER project facilitates this aim by providing a technological framework using cloud services, a workflow, and a methodology. The services facilitate the exchange of information and knowledge associated with informal learning activities ranging from the use of social software through widgets, computer gaming, and remote laboratory experiments. Data from these activities are shared among institutions, learners, and workers. The project demonstrates the possibility of gathering information related to informal learning activities independently of the context or tools used to carry them out.