SKYPE在远程英语教学方面的实时应用

SKYPE系统是目前世界上最流行的互联网远程视频、音频、文字实时交互平台，其音频、视频传播实时非常清晰，这对将远程教育拓展到家庭，特别是对推动远程英语教育的广泛性和普遍性能够起到很大的作用，本文就该平台的基本功能和性能做了介绍，并在远程英语教育方面的应用提出了实践的方法。     

Relationship between Relaxation Internal Friction Peak at about 200℃(f≈1Hz)and Bainitic Transformation In a CuZnAl Alloy

The present investigation showed that the re-laxation peak at about 200℃ (f≈1Hz) was relatedto bainitic transformation in a CuZnAl alloy.Thepeak decreased when bainite precipitated.Theactivation energy of the peak was the same as theapparent activation energy of bainitic transforma-tion.According to the relations between the peakand the bainitic transformation,the mechanism ofthe peak has been discussed.     

坐标旋转法的收敛性,误差估计及扩展

本文通过推广正规序列的定义,得到一个不等式,由此证明了统一计算初等函数数值的坐标旋转法的收敛性,作了误差估计,并拓广了所计算的函数范围,成为快速计算所有初等函数的统一算法．     

以株洲市为例探析城市私房区的改造

首先分析了城市私房区带来的问题和改造的必然性,然后讨论了国内外私房区改造的经验和启示,最后提出了城市私房区改造的基本思路。     

Transformations in machining. Part 1. enhancement of wavelet transformation neural network (WT-NN) combination with a preprocessor

Properly selected transformation methods obtain the most significant characteristics of metal cutting data efficiently and simplify the classification. Wavelet Transformation (WT) and Neural Networks (NN) combination was used to classify the experimental cutting force data of milling operations previously. Preprocessing (PreP) of the approximation coefficients of the WT is proposed just before the classification by using the Adaptive Resonance Theory (ART2) type NNs. Genetic Algorithm (GA) was used to estimate the weights of each coefficient of the PreP. The WT-PreP-NN (ART2) combination worked at lower vigilances by creating only a few meaningful categories without any errors. The WT-NN (ART2) combination could obtain the same error rate only if very high vigilances are used and many categories are allowed.     

D1100-11型造气鼓风机技术改造

针对国内采用煤制气工艺的部分中氮肥生产厂发生的造气鼓风机出力不足的现象，根据不同的系统工作状况对原风机的叶轮进行重新设计施工，不改变机组其余部分，以起到增压扩容的效果，从而实现增产降耗的目的。     

锰锌铁氧体纳米粉体的液相制备及磁性能

以δ-FeOOH为前驱体,用氨水调节溶液的pH值,分别采用(1)90℃水浴加热动态转化、(2)沸腾回流动态转化,(3)90℃静态转化及(4)200℃水热法四种方法合成了锰锌铁氧体纳米粉体.采用X射线衍射仪(XRD),透射电子显微镜(TEM)、振动样品磁强计(VSM)和X射线荧光光谱仪(XRF)等方法对粉体进行了表征,对四种液相法制备的锰锌铁氧体纳米粉体的结构和性能等进行了对比和分析.结果表明,四种方法中沸腾回流相转化法得到的产物具有磁性能较好、形状较规则、粒径可控等优点.     

德兴铜矿变配电网络地理信息系统设计与实践

介绍了矿山变配电地理信息系统的设计与实施。