A Bayesian approach to rapid seismic vulnerability assessment at urban scale

The seismic vulnerability of city centers is commonly assessed by extending the study methods applied to single buildings to urban aggregations. This approach is not always applicable at territorial scale, as it is uneconomical in terms of time and costs. An innovative method provides reasonable large-scale a priori estimation of parameters not directly evaluable from the exterior of buildings by elaborating values which can be measured from the outside. Those parameters are treated as continuous variables, by assigning them a suitable probability density function. The Bayesian approach is adopted, which allows the update of initial hypotheses by using new data gathered during on-site surveys. In this regard, a rapid survey form for the on-site data collection is proposed. An example of its application to a façade of a building structural unit in Santo Stefano di Sessanio in L’Aquila province (Italy) is proposed, showing promising preliminary results for buildings belonging to Italian historical centers.     

《中国土族》获全省期刊质检优质称号《西海记者》被评为良好产品

由青海省民族事务委员会民语办、互助土族自治县民族宗教事务局共同承担的“土族语言文字的应用与保护”项目,经过一年零八个月的努力,于2007年10月底已全部完成。     

阳城犁镜冶铸工艺的调查研究

阳城犁镜是中国传统铁范铸造硕果仅存的活化石。本依据作的调查研究成果,对犁镜冶铸工艺及其历史沿革作了全面的剖析与总结。     

开发文化资源 促进民和旅游业发展——“土族文化暨民和文化旅游资源开发研讨会”在官亭召开

本刊讯 拥有众多优秀文化资源的民和回族土族自治县应该怎样开发文化资源,促进旅游业发展？8月14日,“土族文化暨民和文化旅游资源开发研讨会”在民和回族土族自治县官亭镇召开。来自省垣、民和当地以及甘肃省的有关文化专家就开发土族文化、发展民和旅游业等问题畅所欲言,建言献策。     

东亚经济危机与东亚发展模式新探

本文从三个方面论述了东亚经济发展模式。首先,从历史的角度分析了东亚经济发展模式的产生、特点及其局限性。然后,进一步指出在经济全球化和信息化加速发展新的历史条件下,东亚发展模式已不能适应时代发展的要求,东亚发展模式与这次东亚经济危机存在着内在的必然的联系。最后,对东亚经济发展模式的发展与变革提出了自己的观点。     

生境的选择与楚文化的兴起

本文借助生态学理论,对楚人的南迁过程进行了梳理,并对其迁徙原因进行了剖析。认为自楚先季连族始,开始了南迁。商代前期,其活动地域在丹江流域;商代后期,其活动地域先在丹江与汉水交汇处,后在汉水中游的方山一带;商末至西周时期,其活动地域在湖北西北的荆山一带;东周以后,其中心地域在长江与汉水之间的宜城平原和江汉平原上。迁徙有自然的原因也有人为的原因,楚文化的孕育、形成与发展则是楚人对于生境选择的结果。     

钩沉索隐探微发新——桑吉仁谦土族史专著研讨会发言摘要

冬季的青海高原朔风扑面,寒意袭人,2010年12月17日,西宁龙电宾馆会议室内却暖意融融,气氛热烈,由青海土族研究会和青海省文联文学创作研究室联合举办的桑吉仁谦作品研讨会在     

Earthquake Faulting Effects on Buried Pipelines – Case History and Centrifuge Study

Permanent ground deformation (PGD) is one of the most damaging hazards for continuous buried lifelines. This hazard is especially severe when the PGD results in net compression in the pipe. In that case, buckling of pipe material can occur. If buckling is moderate, deformation of the pipe cross-section can lead to flow restriction and high friction losses, and eventually require line replacement. If buckling is severe, high localized strains can lead to pipe rupture, loss of contents, and possible pollution of surrounding soil. In this article, centrifuge tests of buried pipelines subject to abrupt ground failure in the form of surface faulting are presented. The fault movement results in mostly compression in the pipe. The test results are compared with a case history of pipe failure in the 1999 Izmit, Turkey earthquake and also with the results from the centrifuge tests which result in net tension in the pipe. The experimental setup, procedures, and instrumentation are described in detail. Suggestions for design practice are offered based on the analysis of results from both the 1999 Izmit case history and the centrifuge modeling.