时尚理论研究的新方法——河村的时尚学观点

主要介绍河村由仁夜（Yuniya Kawamura）的时尚学观点：提出把时尚系统作为一种制度化的系统，其中时尚的概念，时尚从生产到传播到消费的运作。     

一种基于P2P模式的校园网课堂直播系统设计

在介绍P 2P技术的基础上,提出一种基于P 2P模式的校园网课堂直播系统。该系统的主要功能是实现课堂教学信息在校园网上的直播,包括视频信息直播,教学PPT文档或电子白板的同步,课堂实时答疑和讨论等。并给出了基于JXTA平台的系统实现方法和过程。     

防震减灾WebGIS体系及其空间数据共享研究

在开发城市防震减灾系统的过程中，以ArcIMS为开发平台，构建出基于GML的三层B／S结构的防震减灾WebGIS体系，支撑和协同相关部门间的工作？在客户端，采用Java Applet编程实现对矢量图形的操作。在数据库层，以GML为空间数据描述语言，设计出基于GML的城市空间信息模型，并利用Oraclc 9i的空间数据部件存储和管理各种类型的空间数据，实现多源异构空间数据的共享。     

KNb3O8的制备及其光催化活性探讨

探讨了固相反应法制备类钙钛矿层状化合物KNb3O8的工艺。对该方法的合成温度、时间等工艺条件进行了详尽的研究。使用X射线衍射（XRD）、扫描电境（SEM）等测试手段对样品进行了表征，并用所制得的样品对酸性红G进行了光催化降解实验。结果表明，在900℃煅烧2h可以合成纯度较高的KNb3O8，且其具有较好的催化性能。     

Electrical properties of BaTiO3-based NTC thermistors doped by BaBiO3 and La2O3

In our research it has been firstly found that BaTiO₃ materials doped with BaBiO₃ only show negative temperature coefficient effect over a wide temperature range. Major phases present in the sintered bodies are BaTiO₃ compounds with a perovskite structure and BaBiO₃ compounds with a monoclinic structure. Also, at a given BaTiO₃ and BaBiO₃ content, the influence of La₂O₃ content on the microstructure and electrical properties has been investigated. The mean grain size of samples decreases with an increase in La₂O₃ content. However the mean grain size remains unchanged with a further increase in La₂O₃ content when the La₂O₃ content in material is more than 0.20. As the amount of La₂O₃ in BaTiO₃-based ceramics thermistors increases, the resistivity decreases to a minimum value and then slowly increases again.     

武钢H台60000m~3/h空分设备投产调试总结

文章简介了武钢氧气公司H台60000m3/h空分设备的工艺流程、特点、技术参数以及投产调试的情况,详细分析了在调试运行过程中遇到的问题及解决方法,最后简述了空分设备建设过程中的一些成功经验。     

Effect of annealing on the characteristics of Au layers grown on the high-temperature deposited Ni50Fe50 layers

80 nm-thick Ni₅₀Fe₅₀ layers were sputter-deposited on glass substrates at 400 °C and then Au layers were sputter-deposited on the Ni₅₀Fe₅₀ layers. The Au/Ni₅₀Fe₅₀ bilayer films were annealed in a vacuum of 5×10⁻⁴ Pa from 250 to 450 °C for 30 min or 90 min. The characteristics of the Au layers were studied by Auger electron spectroscopy, field emission scanning electron microscopy, X-ray diffraction and a four-point probe technique. When the annealing temperature reaches 450 °C, Fe and Ni atoms diffuse markedly into the Au layer and the Fe content is more than the Ni content. When the annealing temperature is lower than 450 °C, the grain size of the Au layers does not change markedly with annealing temperature. However, as the annealing temperature reaches 450 °C, the annealing promotes the grain growth of the Au layer. As the annealing temperature exceeds 300 °C, the resistivity of the bilayer films increases with increasing annealing temperature. The diffusion of Fe and Ni atoms into the Au layer results in an increase in the resistivity of the annealed bilayer film. Large numbers of Fe and Ni atoms diffusing into the Au layer of the annealed Au/Ni₅₀Fe₅₀ bilayer film lead to a significant decrease in the lattice constant of the Au layer.     

无刷直流电机模糊控制系统的建模及仿真分析

为提高无刷直流电机控制系统的精度，根据电机的数学模型和运行原理．基于MATLAB／Simulink仿真平台并结合S-函数构建了无刷直流电机电流、转速模糊控制的双闭环控制系统的仿真模型，并详细介绍了模型的部分子模块。仿真结果表明，与一般的比例积分与微分控制相比，系统响应时问快、无超调，具有较强的鲁棒性和自适应能力。     

采用神经网络控制的永磁同步电动机调速系统

针对传统PID控制的不足，设计了神经网络（ANN）控制的永磁同步电动机（PMSM）调速系统并进行了仿真分析。结果表明：采用神经网络控制的调速系统具有更好的起动性能，当负载或参数突变时，具有恢复时间短、振荡小等特点，证明了神经网络控制的优越性。     

SVPWM的调制及谐波分析

在分析SVPWM原理的基础上，给出了仿真的波形，重点对SVPWM的仿真结果进行了谐波分析，得到了SVPWM谐波分布的主要特点及影响其谐波分布的几个主要因素，为更有效消除SVPWM谐波污染提供了理论基础和指导。