Performance-based Seismic Design of a Pendulum Tuned Mass Damper System

The study implements the performance-based analysis and design methodology to assess the seismic vulnerability of a coal-fired power plant and to optimally design its equivalent pendulum-type tuned mass damper system such that the direct losses are minimized. A building-specific total loss ratio is developed to link the component level losses with the total repair cost of the original structure. The optimal system configuration is finally derived for cases with the minimum loss. The study demonstrates a systematic way of achieving the optimal pendulum-type tuned mass damper design with considerations of uncertainties in earthquake inputs and the combined component level damages.     

多种科技方法在古月桥勘察修缮设计中的应用

建于南宋嘉定六年(公元1213年),位于浙江省义乌市的古月桥是折边拱桥这种桥梁发展过渡形式中不可多见的典型实证,具有极高的历史、科学、艺术、文化和社会价值。为了明确古月桥目前的状态,分析其主要威胁及病害原因,判断结构稳定性,进而制定有针对性的修缮方案,采用多种科技方法对古月桥进行了勘察和综合判断。面对桥身残破的现状,工作组采取了三维激光扫描、微观实验、结构分析等多种科技方法综合勘察,不仅较为清晰的地了解了古月桥的病害威胁,也分析了其背后致因及相互之间的联系;最终对古月桥稳定性及保存状况做出了综合判断。上述多种方法的应用,不仅相互印证了勘察结论,也为后续保护工作提供了重要的依据。     

The historical narrative of the Wanli Korean campaign in the Qing Official Ming History

Abstract

The Ming History (明史 Mingshi) by Qing official historians took more than 90 years to complete, and Wan Sitong's 萬斯同 Draft Ming History (明史稿 Mingshi gao), Wang Hongxu's 王鴻緒 Draft Ming History, and the Ming History palace edition overseen by Zhang Tingyu 張廷玉 were the most important histories of the Ming over its different stages of compilation. Wan Sitong gave much attention to the writing of history in the biographies from the Wanli Korea Campaign, Wang Hongxu did not give them much attention, and Zhang Tingyu repudiated and even negated them. In Zhang Tingyu's Ming History, the Annals of Shenzong (神宗本紀 Shenzong benji) set the tone of repudiating the Korea campaign. Due to their clan, the Bozhou Campaign (播州之役 Bozhou zhiyi), or the Liaodong Incident (遼東事變 Liaodong shibian), nearly none of the Ming generals from the eastern expedition to Korea were given biographies due to their participation in the Korean War. The History of the Choson (朝鮮傳 Chaoxian zhuan) gives a negative evaluation that denies or undervalues relevant people and battles. On the one hand, this was due to the influence of historical sources. Due to Yang Gao’s 楊鎬 responsibility for defeat in the Battle of Saerhu 薩 爾 滸 之 役, the compilers of the Veritable Records of Ming Shenzong (明神宗實錄 Ming Shenzong shilu) followed the account of Ding Yingtai 丁應泰 in their records and denied the accomplishments of Yang Gao and the Ming army in Korea. On the other hand, due to real political needs, as the commanders of the eastern expedition to Korea later became the military rival of the Later Jin in Liaodong, an attitude of denial had to be adopted against them to create legitimacy for the Qing dynasty. These were the two main factors that determined the way in which the Qing official Ming History wrote the history of the Wanli Korean War.     

Does clean air increase the demand for the consumer city? Evidence from Beijing

Cities offer a large menu of possible employment and leisure opportunities. The gains from such consumer city leisure are likely to be lower on more polluted days. We study the association between daily consumption activity and outdoor air pollution in China and find evidence in favor of the hypothesis that clean air and leaving one's home for leisure trips are complements. Given the high levels of air pollution in cities in the developing world, regulation induced improvement in environmental quality is likely to further stimulate demand for the consumer city.     

关于金长城(界壕边堡)的研究与相关问题

关于金长城(界壕边堡)文献著录与考证的历史回顾.自上世纪三四十年代以来,考古调查与发掘的主要收获.其中包括本人早年三次调查金东北路界壕边堡的发现与成果.与金东北路、临潢路界壕有关的几个历史地理问题.主要从考古学的角度,推断"北方边墙"当属于辽代.金长城(界壕)继承了我国古代长城的一般传统与功能,而且在建造规律、纵深配置与管理诸方面,予后世之明长城(边墙)以直接影响.迄今,关于金长城的分布与配置已大致清晰,但在总长度上的分歧甚大.因此,按统一标准,在统一规划下,对金长城进行精确复查,仍属势在必行.     

巧架精编科学合理——学习《上海年鉴》总体框架设置的体会

本文通过对《上海年鉴》总体框架设置的分析,力求地方综合年鉴的编纂在一级栏目（类目）和相关部分内容的设计上突破以往的模式,努力做到有所创新,突出特色和服务读者,提高地方综合年鉴的质量和使用价值。     

北洋政府的蒙古教育政策

本文主要依据档案资料对北洋政府的蒙古教育政策进行了概要探讨。认为虽然蒙古地区的情况比较复杂,但北洋政府还是出台了一些与蒙古教育有关的政策。这些政策尽管缺乏系统性,但继承了清末教育变革的精神,继续推动了传统教育和现代教育的接轨。这一时期蒙古教育的发展受到了社会动荡的严重影响,但热河、绥远、察哈尔三个有蒙古族分布的地区,其教育还是在困境之中维持或有一定程度的发展,这种发展更多的是来自于上述地区内部的发展要求。     

马家浜文化区的地理景观

马家浜文化区的环境研究,以往都以1000年左右为尺度,即把马家浜文化作为一个基本时间单元来分析,所得结论是粗线条或大趋势性的。在马家浜文化研究近半个世纪的今天,我们已经有条件提取更多信息,变趋势性考察为过程性研究,进而描绘这一时期更加细微的演化曲线,构建人地关系景观。     

鸠·鸠杖·鸠车

鸠杖、鸠车在汉代甚为流行。对于这一文化现象,作者在对鸠的原始造型及其文化含义作简要分析的基础上,进一步剖析鸠杖、鸠车在汉代受到青眯的原因,指出鸠杖、鸠车流行于汉代是当时尊老爱幼之风甚盛的物质体现。     

马圈湾汉简所见一次发生在车师的战争

敦煌马圈湾汉代烽燧遗址第5号探方所出简牍材料中有一批简文集中反映了王莽时期一次发生在车师的战争。前人多认此役为天凤三年至四年（16—17）的王骏征伐西域战争之结尾。文章对此说提出了商榷,大致推定此役实与王骏征伐西域战争无关。