Experimental Investigation on the Seismic Behavior of the Semi-Rigid One-Way Straight Mortise-Tenon Joint of a Historical Timber Building

ABSTRACT

This article aims to disclose that the deformation and damages of the one-way straight mortise-tenon (OWSMT) joint, the key force transmission connection of traditional wood buildings, lead to a significant reduction in structural safety of ancient timber structure. For this purpose, the damage of mortise joint in practical engineering wassimulated by controlling the gap and width between mortise and tenon. A total of 23 groups of scaled 1:2 OWSMT joint specimens were fabricated and tested subjected to cyclic loadings, and the hysteretic curves of OWSMT joint with different damage degrees were obtained. Through skeleton curves, stiffness degradation curves, and equivalent viscous damping curves of the OWSMT joint, the seismic performance of damaged wood joints was quantitatively analyzed. The results show that, with the increase in the gap between the tenon and the mortise, the slip between them became increasingly obvious, the fullness and peak of the hysteresis curve gradually decreased, the gradient of the skeleton curve also dropped, and both the stiffness degradation curve and the equivalent viscous damping curve are gradually reduced. The research findings shed new light on the seismic assessment of aging timber buildings.     

从中国藏西夏文献看西夏文写经书法风格及成因

西夏文字以其字形方块平整、类似汉字、主要使用毛笔为书写工具的特点,使其具有了少数民族文字书法的独特魅力。目前存世的西夏文文献以佛经为主,故写经书法是西夏文书法的一个重要方面。本文从中国境内收藏的西夏文写本《大般若波罗蜜多经》及与其一同出土的佛经写本残片入手,对比得出西夏文写经书法具有传承自唐代楷书写经并独具地域特色的艺术风格的结论,分析了形成这一风格的的原因,即受到河西走廊佛教传播与写经传承、西夏文化教育制度、宋人尚意书风、西夏境内其他少数民族文字书写风格等四个方面的影响。     

文化形态史学析论

文化形态史学对 1 9世纪的“科学”史学展开了深刻的批判 ,同时也对2 0世纪的史学有开启之功 ,具体表现在四个方面 :从显在的欧洲中心史观到隐蔽的欧洲中心史观、从局域主义到整体主义、从“脱魅”到“复魅”、从单线时间观到多元时间观     

中国现代方志学发展阶段探论(上)

中国现代方志学在中华人民共和国建立以来的发展过程中,经历了兴衰荣盛的变化。科学地划分其所经历的各个发展阶段乃至阶段中的发展时期,并对其间的发展状况予以归结,不仅有裨中国现代方志学的深入研究,进而促进中国方志学整体研究的深入,而且有裨新一轮方志的编修工作,并促进完整的、科学的方志学理论体系和中国方志学学科体系的构建。本文认为,中国现代方志学的发展经历了孕育待兴、探索、中挫冷落和新兴发展4个阶段,而新兴发展阶段又可分为复苏新生、全面兴起、繁荣兴盛和深入发展4个时期。对各个发展阶段及时期的起迄时间、发展状况、相关特点、成果得失等进行了探论。     

Investigation of ancient noodles,cakes, and millet at the Subeixi Site,Xinjiang, China

Ancient foodstuffs, including noodles, cakes, and common millet, were excavated from the Subeixi Cemeteries (cal. 500–300 years BC), Turpan District in Xinjiang, China. Starch grain and phytolith analyses were undertaken to identify the plant species involved. These indicate that the noodles and cakes were made from Panicum miliaceum. Ancient food preparation technologies were also investigated by cooking experiments.     

Adaptation in cultural industry under conservation pressure: case study of two Chinese embroidery clusters

Abstract

In this study, we explore how tension between ‘culture’ and ‘industry’ can be effectively dealt with in promoting cultural industry, taking the Chinese embroidery sector as an example. The diverging performance of two leading centers of Chinese embroidery production suggests that local adaptive and networking capabilities are essential in creating a new path out of the tension, and these capabilities are largely determined by local openness/flexibility, entrepreneurship, and linkage capacity. In Changsha, cultural conservatism prevails, and the local embroidery sector largely maintains traditional product styles and target customers, sticking to the historic path. It is in question, however, whether such a strong bias toward the high-culture segment of the industry is good for cultural heritage protection in the long run, given that the industry at standstill has faced increasing challenges in sustaining a solid local pool of skilled labor. In contrast, Suzhou’s local embroidery sector has actively responded to the changing market environment, through increased product segmentation and customization as well as intra/cross-industry collaboration. Such a flexible, scale-up strategy has helped the industry attract local talent and meet the market demand, while maintaining space for high-end artistic products.     

《商颂》的作者、作期及其性质

<诗经·商颂>现存五篇:<那><烈祖><玄鸟><长发><殷武>.这是颂扬商族祖先的祭祀歌辞,其中涉及的内容大致包括:     

东海女真文化的认知人类学阐释——以满族萨满史诗《乌布西奔妈妈》为例

满族萨满史诗<鸟布西奔妈妈>展示了东海女真社会鲜为人知的珍贵历史及大量古俗,凸显着满族原生文化的要素及特质,蕴含着丰富的生态意蕴.东海女真文化作为一种生存策略,集中表现为东海女真民众在生存实践中的一种知识能力和创造能力,这种能力主要源自东海女真人对自然的认知,对社会的认知以及由此产生的感悟与联想.对东海女真文化进行认知人类学的解读,对廓清满族原生文化的生成动因具有重要的意义.