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关于印刷术的起源问题 总被引:2,自引:0,他引:2
印刷术的发明,在人类文化史上具有划时代的意义.本文论述了与印刷术起源有关的四个问题:什么是印刷术,印刷术起源的研究方法,英山毕昇和最早印刷品. 相似文献
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走出国门,可以说是中国出版业一个难圆的梦。我国最早发明了雕版印刷术和活字印刷术,早在北宋时期就通过各种途径向世界各地传播,先是传到了朝鲜,后又传到日本,通过丝绸之路,还传到了中亚各国和欧洲。不但是印刷术,中国的印刷品也作为当时文明的象征之一,传播到了亚欧各国,世界一些著名的博物馆、图书馆至今还收藏着现存最早的中国印刷品。然而,中国出版业的这种领先地位被17和18世纪欧洲的工业革命击垮了,以铅活字为标志的西方近代印刷术成为引领世界出版业潮流的主角。西方印刷术传入我国,虽有几分尴尬,倒也推动了我国出… 相似文献
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概述《关于为盲人、视力障碍者或其他印刷品阅读障碍者获得已出版作品提供便利的马拉喀什条约》的缔结进展,论述该《条约》所涉及的印刷品阅读障碍人士版权例外的适用范围和关键内容,阐述其对图书馆无障碍服务的意义,并结合中国实践,对图书馆界提出建议。 相似文献
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<正> 信息科学是一门崭新的学科.它记录了人类的文明,推动着社会的进步,逐渐为人所重视,并得到迅速地发展.从日益增长的大量文献资料进行转换、贮存、传递、管理的手段来说,目前已经由纸张逐步过渡成不同规格的缩微胶卷、胶片、磁带、磁盘,以及激光全息缩微、光盘缩微.今天缩微技术与电子计算机技术和通讯技术相结合,已构成现代情报技术的三个重要组成部分.缩微制品可以大幅度节约文献资料的贮存空间,它仅为印刷品占有空间的百分之二,为印刷品重量的百分之一,如超微处理将更为节省,而且保存期长.由于缩微制品制作工艺简单,迅速准确,能节省大量纸 相似文献
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联合国教科文组织对图书的定义是:凡由出版社(商)出版的不包括封面和封底在内49页以上的印刷品,具有特定的书名和著者名,编有国际标准书号,有定价并取得版权保护的出版物称为图书."图书"一词最早出现于<史记·萧相国世家>,刘邦攻入咸阳时,"何独先入收秦丞桕御史律令图书藏之. 相似文献
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雕版印刷术的发明是我国古代社会经济和文化不断发展的产物.汉代造纸术的发明为印刷术的发明打下了坚实的物质基础.人造墨的产生以及后来的制墨技术愈来愈精,为印刷术的产生提供了必备的物质条件.印章压印技术和代之而起的纸墨摹印以及大规模地雕刻石经又对雕版印刷术的发明起了直接的启迪作用.拓摹刻石和后来出现的佛像雕刻方法的结合更是直接促成了雕版印刷术的发明.我国现存最早的印刷品就是唐咸通九年( 868年)王?为其父母"敬造普施"的佛经<金刚经>. 相似文献
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《鱿鱼游戏》全球热播现象证明了Netflix全球本土化战略并非一成不变.面对韩国与西方国家文化距离过远的现实情况,创作者有意识地从两个维度调整战略:以简约美学下的叙事特征打造高品质剧集,以共振传播下的受众体验实现文化接近性.如此,同时迎合不同文化场域内的受众.然而,《鱿鱼游戏》的传播力提升策略遵循的是跨文化传播理念,并... 相似文献
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《Library Collections, Acquisitions, and Technical Services》2002,26(3):283-298
Raises issues relating to Arabic subject-indexing based on an analysis of headings linked to a sample of 300 bibliographic records. Finds that, even in rapidly developing disciplines like IT, the high incidence of candidated new headings and of heading combinations may be influenced more by increased exposure during copy cataloguing to LCSH practice than by any acute need. Concludes that any real challenge to the usefulness to existing tools like El-Khazindar’s list of Arabic subject headings, published in 1994, will only come when libraries attempt to apply them systematically to all materials, Arabic and non-Arabic alike. 相似文献
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Simple Bayesian Model for Bitmap Compression 总被引:1,自引:1,他引:0
Bitmaps are a useful, but storage voracious, component of many information retrieval systems. Earlier efforts to compress bitmaps were based on models of bit generation, particularly Markov models. While these permitted considerable reduction in storage, the short memory of Markov models may limit their compression efficiency. In this paper we accept the state orientation of Markov models, but introduce a Bayesian approach to assess the state; the analysis is based on data accumulating in a growing window. The paper describes the details of the probabilistic assumptions governing the Bayesian analysis, as well as the protocol for controlling the window that receives the data. We find slight improvement over the best performing strictly Markov models. 相似文献
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《文物保护研究》2013,58(2):84-86
AbstractEgyptian blue has been identified positively in a Roman mediaeval fresco of the lower church of San Clemente. The date around the middle of the ninth century A.D. of the mural painting extends by five centuries the previously known period of use of this famous pigment. 相似文献
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积极探索媒介品牌形象传播的实践途径,可以让媒体借助富有战略性的品牌形象传播方式,扩大品牌形象的效益贡献,从而提高现代媒介传播的整体效果,确保媒体资产的保值和增值,最终实现大宣传,大产业的良性互动,促使媒介在新的历史进程中不断做出新的贡献. 相似文献
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Simple Semantics in Topic Detection and Tracking 总被引:3,自引:0,他引:3
Topic Detection and Tracking (TDT) is a research initiative that aims at techniques to organize news documents in terms of news events. We propose a method that incorporates simple semantics into TDT by splitting the term space into groups of terms that have the meaning of the same type. Such a group can be associated with an external ontology. This ontology is used to determine the similarity of two terms in the given group. We extract proper names, locations, temporal expressions and normal terms into distinct sub-vectors of the document representation. Measuring the similarity of two documents is conducted by comparing a pair of their corresponding sub-vectors at a time. We use a simple perceptron to optimize the relative emphasis of each semantic class in the tracking and detection decisions. The results suggest that the spatial and the temporal similarity measures need to be improved. Especially the vagueness of spatial and temporal terms needs to be addressed. 相似文献
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一、调整印刷压力的重要性 高速平版印刷机的印刷滚筒在滚动压印过程中,要求它们的表面线速度相等,不能产生相对滑动和摩擦.但是油墨在从印版转移到橡皮布上,再转印到承印物的过程中,必须有一定的印刷压力作用,以致使衬垫发生弹性变形. 相似文献