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在集成电路光刻过程中,利用光刻模拟软件将光刻模拟结果与设计模板进行比较可以预先发现模板设计中的缺陷.由于光刻模拟软件与模板设计软件数据格式的不同影响了这一步工作的顺利完成.本文通过对两种软件数据格式的研究,利用Perl语言实现了两种软件之间数据格式的转换,具有一定的实用价值. 相似文献
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基于Bardeen-Cooper-Schrieffer(BCS)理论,在紧束缚近似下,利用Bogoliubov-de Gennes(BdG)方程,通过自洽计算,研究了具有S波配对的超导石墨烯-石墨烯结中的近邻效应。针对在超导部分和正常导体部分的费米能级匹配和不匹配的两种情况,讨论了化学势对体系的局域态密度,以及配对振幅的影响。 相似文献
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钻井泥浆泵泵冲流量测量系统是石油钻(修)井行业中一种重要的泥浆泵冲和入口测量的测量仪表.文章介绍了泵冲流量测量系统的原理,阐述了该仪表系统的设计原理及关键技术.该系统能为钻(修)井泥浆注入量提供准确显示.便于司钻和钻(修)井监督们第一时间了解泥浆泵的工作情况和掌握井筒内泥浆的压力状态.实验证明,该系统测量精度.可靠性均很理想,值得推广应用. 相似文献
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本文介绍了X波段扇形微带元的理论计算与计算机辅助设计的方法,计算了ER=9.6、3.8、2.77、的介质基片上的扇形微带元的有关特性曲线。计算结果与实测基本相符,可供设计者参考使用。最后介绍了作为宽带偏置电路或调谐电路的应用。 相似文献
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Hong Xiao Xiaoling Lin Gerardo Chowell Cunrui Huang Lidong Gao Biyun Chen Zheng Wang Liang Zhou Xinguang He Haining Liu Xixing Zhang Huisuo Yang 《科学通报(英文版)》2014,(5):554-562
Changsha was one of the most affected areas during the 2009 A (H 1N 1) influenza pandemic in China. Here, we analyze the spatial-temporal dynamics of the 2009 pan- demic across Changsha municipal districts, evaluate the relationship between case incidence and the local urban spatial structure and predict high-risk areas of influenza A (H1NI). We obtained epidemiological data on all cases of influenza A (H1NI) reported across municipal districts in Changsha dur- ing period May 2009-December 2010 and data on population density and basic geographic characteristics for 239 primary schools, 97 middle schools, 347 universities, 96 mails and markets, 674 business districts and 121 hospitals. Spatial- temporal K functions, proximity models and logistic regres- sion were used to analyze the spatial distribution pattern of influenza A (H1N1) incidence and the association between influenza A (HINI) cases and spatial risk factors and predict the infection risks. We found that the 2009 influenza A (H 1N 1 ) was driven by a transmission wave from the center of the study area to surrounding areas and reported cases increased significantly after September 2009. We also found that the distribution of influenza A (H 1N1) cases was associ- ated with population density and the presence of nearest public places, especially universities (OR = 10.166). The final pre- dictive risk map based on the multivariate logistic analysis showed high-risk areas concentrated in the center areas of the study area associated with high population density. Our find- ings support the identification of spatial risk factors and high- risk areas to guide the prioritization of preventive and miti- gation efforts against future influenza pandemics. 相似文献
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Michael P. Windham 《Journal of Classification》1985,2(1):157-172
An approach to numerical classification is described, which treats the assignment of objects to types as a continuous variable, called an assignment measure. Describing a classification by an assignment measure allows one not only to determine the types of objects, but also to see relationships among the objects of the same type and among the types themselves.A classification procedure, the Assignment-Prototype algorithm, is described and evaluated. It is a numerical technique for obtaining assignment measures directly from one-mode, two-way proximity matrices. 相似文献
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近炸引信的系统试验是近炸引信总体设计和检验产品必不可少的重要手段。本文论述了试验中有关的测量、速度选择和数据处理方面主要技术问题的解决方法及某些运用观点。 相似文献
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龚济民 《南京理工大学学报(自然科学版)》1985,(4)
本文论证了无线电引信的无线电遥测系统的设计方案,并着重介绍了此系统的几个重要部件的研究设计(微波固态源、PIN调制器、天线等)。系统的实验结果表明:此系统及其部件设计是成功的。 相似文献
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