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编者按: 自2005年,佳能中国陆续发布了多款激光打印机,从面对个人办公的小型激光打印机,到企业级工作组的A3激光打印机,LASER SHOT激光打印机的产品线越加丰富. 相似文献
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不论是在居家办公,还是在中小企业的办公室,打印机都是常见设备,那么为什么现在应该选择彩色激光打印机?理由只有一个,那就是降低成本. 相似文献
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DocuPrint 181是富士施乐公司近期推出的一款A3幅面小型黑白网络激光打印机,它定位于工作组与部门级商业应用环境。DocuPrint 181采用200MHz RISC处理器,标配16MB内存(有需要的用户可另选配256MB的内存以达到最大容量272MB),最大打印分辨率为1200×1200dpi,A4和A3幅面的标称打印速度分别为18.4ppm和10.9ppm。我们采用该打印机的缺省设置打印A4幅面的42页图文混排的Word文档用时2分39秒,12页PowerPoint文档用时46秒,3页带有复杂图形的Excel报表用时22秒,PrinterBench测试中首页输出时间仅为7秒,同我们测试过的规格相仿的其它打印… 相似文献
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The process of demographic ageing in Sri Lanka is striking in comparison to the experience of other countries in South Asia, and in comparison to many developing countries more generally. The proportion of the population older than 60 years in Sri Lanka was much higher—almost double—than in any other country in the region in 2000, and by 2030, it is expected that nearly one of every five Sri Lankans will be elderly. The rapid ageing of the Sri Lankan population is contributing to the emergence of several policy issues that will undoubtedly become more acute in the years to come. The primary aim of this paper is to examine the magnitude, characteristics and determinants of demographic ageing in Sri Lanka, a country whose demography has received little international attention, and discuss some of the implications of this ageing process for selected policy issues. 相似文献
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从《鬼恋》的情节构架、心理内涵、哲理意蕴、象征意味、文化碰撞诸方面对其进行多角度的审视和考察,以期为徐訏的美学追求和贡献做出有益的探索。 相似文献
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本文通过分析在VisualC 环境下开发ORACLE数据应用程序的三种方法:Pro*C,OCI,ODBC和DAO技术,详细介绍了各种方法的编程技术及其相互比较。 相似文献
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整个2006年,是数码多功能一体机不断替代传统复印机市场的一年、是IT和OA相互融合的一年、是彩色打印走向普及的一年.这样的三个发展趋势也一直延续到2007年,继续影响着数码一体机未来市场走向,而关键的技术变革也会加速影响竞争格局的改变. 相似文献
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介绍了LF精炼炉底吹氩过程控制系统工作原理、测试法建模、控制策略及控制系统的实现.通过对精炼炉底吹氩过程控制系统进行研究与分析,并根据测试法建模的有关知识以及有关数据,建立起了被控对象的数学模型.在此模型的基础上,从底吹氩工艺要求和控制系统的实际情况出发,提出基于模糊理论及PID理论相结合的控制方案,以解决在精炼炉底吹氩过程中,由于被控对象的非线性、数学模型参数的不确定性及系统工作点的剧烈变化等因素,而引起的对被控量不能进行精确控制的缺陷.通过理论分析和仿真结果表明,应用FUZZY PID控制方法在各种指标上都要优于常规PID控制方法. 相似文献
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密码技术作为信息安全的核心技术之一,能有效保障信息的机密性、认证性、完整性和不可否认性。本文根据笔者在日本公立函馆未来大学从事博士后研究的亲身经历,介绍该校面向计算机专业硕士生开设的密码学课程的内容设置与教学方法。 相似文献
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Carol Bier 《Nexus Network Journal》2012,14(2):251-273
Of several brick tomb towers constructed at Maragha in western Iran before the Mongol conquests, one in particular, Gonbad-e Qabud (593 H. / 1196-97 C.E.), has generated significant recent attention for its unique patterns with pentagons and decagons. Gonbad-e Qabud is also unusual in having a decagonal plan. While both plan and decoration distinguish it from earlier and later towers at Maragha and elsewhere on the Iranian plateau, the ornamental patterns follow a long line of experimentation with geometric expressions that grace many pre-Mongol buildings in Iran. This article examines in particular the overlapping polygons and radial symmetries of the tympanum of the cubic Gonbad-e Sork (542 H. / 1148 C.E.) at Maragha, and the pentagons and squares of the tympanum of the later octagonal tomb tower (486 H. / 1093 C.E.) nearby at Kharraqan. Drawing from archival sources (plans, elevations, photographs), analysis of plane patterns, and comparative architectural data, this article reevaluates the cultural significance of Gonbad-e Qabud, seeking to situate it within the histories of mathematics, architecture, and the arts. 相似文献