Three feedforward (FFD) control techniques for position-servo machine axes are compared. All three FFD controllers are u......

A 3-D finite-element numerical simulation model of temperature field for CIESC casting solidification process was develo......

In order to develop and use some of the metals resources such as tungsten, tin and antimony in a more rational way and c......

Philosamia cynthia ricini belongs to the non-hibernation multivoltine insects. Our researchhas found ways and methods t......

The purpose of this study was to examine the changes of cancer cell in ultrastructure after inorganic crystal nanopartic......

This paper studies factors influencing rural-urban labor migration in China,particularly the implementation of rural coo......

China’s economic upsurge cannot be reversed by the severe acute respiratory syndrome (SARS) now ravaging some parts of......

The finite element analysis of the fretting behavior between a cylinder block and a main bearing cap is presented. The s......

When SARS (severe acute respiratory syndrome) broke out in China in the spring this year, Qigong was confined to his sm......

Recent price movement Benchmark prices were mostly unchanged over the past month.Prices for the July NY futures contract......

介绍了超磁致伸缩材料具有高磁致伸缩应变λ,能量转换效率高、工作频带宽、频率特性好;稳定性好、可靠性高,其磁致伸缩性能不随时......

本文通过一个理论数学模型分析了市场从竞争走向垄断的动态过程,揭示出企业在各种规模报酬状态下的市场竞争中扩大规模的内在机制......

明太祖废相,明成祖设内阁,都为翰林官员参与朝政提供了良机。翰林院执掌广泛,并与内阁挂钩,且翰林官员与皇室关系密切,故翰林官员......

学校体育两类课程改革是我国学校体育改革中的重要内容，本文通过对学校体育两类课程的改革的意义出发，对两类课程的内容要求进行了分......