Asynchronous complex pipeline design based on ARM instruction set

This paper proposes an asynchronous complex pipeline based on ARM-V3 instruction set. Muller pipeline structure is used as prototype, and the factors which may affect pipeline performance are analyzed. To balance the difficulty of asynchronous design and performance analysis, both complete asynchronous and partial asynchronous structures aere designed and compared. Results of comparison with the well-Rnown industrial product ARM922T verify that about 30% and 40% performance improvement of the partial and complete asynchronous complex pipelines can be obtained respectively. The design methodologies can also be used in the design of other asynchronous pipelines.     

压力注浆技术在岩溶路基处理中的应用

岩溶性地基处理是铁路建设中常遇到的问题之一.根据浙赣线宜春火车站的水文地质情况,确定了处理方式和施工参数,介绍了压力注浆的技术方案、工艺流程、施工中出现的特殊问题及相应的处理措施和注浆效果检测方法,证明加固效果良好.