Manufacture and Date of a Goryeo dynasty Sutra Box with Mother-of-pearl Inlaid Decoration at the Rijksmuseum,Amsterdam

Currently, about ten Goryeo dynasty (918–1392 CE) sutra boxes are preserved in museums in Korea, Japan, the United States, the Netherlands, and the United Kingdom. This article is the result of an examination of a sutra box in the collection of the Rijksmuseum, Amsterdam (hereafter ‘Rijksmuseum sutra box’), which was first introduced to a European audience in the Transactions and Proceedings of the Japanese Society, in 1913–1914. The Rijksmuseum sutra box differs from other Goryeo sutra boxes. With its altered structure and modified motifs, this box bears significant value, not only for the research of thirteenth-century Goryeo mother-of-pearl art, but also for the study of cross-cultural adaptations in East Asian lacquer art. This article investigates the date of manufacture of the sutra box by analysing the manufacturing techniques and its various original and modified parts. For this, an X-ray radiograph was carried out for the first time. As a result, discoveries have been made regarding the structure and decoration of the lower part, which has been modified and is different from Goryeo mother-of-pearl sutra boxes. Finally, this paper reconsiders conservation and repair of Goryeo sutra boxes, as illuminated by an understanding of the original and repaired parts of this box.     

ANSYS非线性有限元软件在桥梁结构分析中的应用

有限无法是分析复杂工程结构的一种非常有效的数值方法．本文通过叙述采用ANSYS进行钢箱梁结构分析的实施步骤，介绍了使用ANSYS非线性有限元软件进行桥梁结构分析的方法．     

融贯中西的艺术孤行者——庄华岳与赵无极

庄华岳1935年考进国立艺术专科学校,与赵无极同班,感情甚笃,同是班里最为出类拔萃的.庄华岳在校学习时就显露出过人的天份和才能,成为老师眼中的奇才,作品受到业师吴大羽及同学赵无极的激赏.吴师拟荐庄出国留学,因抗战爆发终成泡影.后庄华岳几十年从事教育工作.赵无极毕业后赴法深造,成就为一代大师.1957年赵无极曾误信传言,...     

多用电表测电阻应注意三个问题

介绍了用多用电表测电阻应注意的几个问题：原理问题；选挡调零与读数问题；探索电学黑箱问题。     

三门海特大桥高桩承台钢吊箱设计与施工

阐述三门海大桥用有底钢吊箱修建深水高桩承台的设计与施工要点,总结出深水高桩承台的干作业施工技术及注意事项,既可保证工程质量,又节省时间和费用,有一定的经济、社会效益。     

HDTV码流发生器的软件设计

阐述了以Intel公司的Flash存储器为核心器件实现码流发生器的软件设计特点及流程.该发生器可以为信源解码器整机调试提供信号,目前已在厦华公司生产线上使用.     

Mathematical methods for modelling price fluctuations of financial times series

Statistical and Fourier analysis methods of time series representing fluctuations of stock market in general and Indian stock markets in particular are well known. This work is motivated by a recent paper by Guharay [Operations Research and Financial Engineering, Princeton University, Princeton, NJ, preprint, 2002] where he has studied trends in the S & P 500 for various time periods using wavelet tools. Our paper deals with a few Indian and Saudi stock prices and return fluctuation for a certain period of time. The main objective of the analysis is to understand the dynamics of the Indian and Saudi stock markets. We look for similarities, point of abrupt changes, normalized data, return, volatility, graph, pure and noise part, correlation lengths, and signal-to-noise ratio.     

单片机综合实验箱的研制

介绍了一种新型单片机综合实验箱的研制目的,阐述该装置的基本设计思想、总体设计方案和结构特点,介绍了该装置基本模块的功能。     

基于PSB的高频开关电源的仿真分析

分析了采用Buck变换器的PWM控制的开关电源的仿真问题,并利用PSB建立了一个离散的、非线性开关电源模型.通过在仿真模型中修改电路参数,可方便地进行系统的优化设计,而且可以部分地替代硬件实验,极大提高开发效率.     

一类广义Feistel密码的线性分析

针对一类广义Feistel密码提出一种求取密码线性偏差上界的方法.该分析方法的思路是,首先对密码体制线性偏差进行严格的数学描述,分别给出密码线性偏差与轮函数F及S盒的线性偏差的数学关系;然后确定密码线性偏差的上界.利用该方法给出了 32轮以内各轮的线性偏差上界