Distributed Tuned Mass Dampers for Multi-Mode Control of Benchmark Building under Seismic Excitations

The effectiveness of the multi-mode control of seismically excited building installed with distributed multiple tuned mass dampers (d-MTMDs) is investigated by comparing dynamic response with the other controllers, such as passive friction dampers, semi-active dampers, single tuned mass damper (STMD), and multiple tuned mass dampers (MTMDs-all.top), both installed at the top of the building, and arbitrarily distributed MTMDs (ad-MTMDs). It is concluded that the d-MTMDs exhibit improved performance as compared with the STMD, MTMDs-all.top, and ad-MTMDs. The d-MTMDs are also convenient to install owing to the reduced space requirements, being placed at various floors.     

法国巴黎集美博物馆藏克孜尔石窟壁画调查与原位考证

本文在前人研究基础上,结合笔者数十年的石窟工作经验以及远赴国外广泛调查的结果,将法国巴黎集美博物馆收藏的15块克孜尔石窟壁画残片进行了核对与测量,找到了全部壁画所出洞窟及原位,并通过电脑技术对图片进行了复原。