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71.
Julia Flanders 《Language Resources and Evaluation》1997,31(4):301-310
This paper discusses the contested role of images in electronic editions, and summarizes some of the chief arguments for their
inclusion. I then argue that, to truly determine the importance of images to the function of electronic editions, we must
understand the contribution the image makes to the form of textual knowledge provided by the edition. I suggest a distinction
between editions which are primarily pedagogical in their aims, those which aim above all at scholarly authority, and those
which attempt to provide textual information as high-quality data which can be analysed and processed. I conclude that the
latter represents the most significant future trend in electronic editing.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
72.
73.
压电类智能层合结构的力学和计算模型综述 总被引:2,自引:0,他引:2
综述了压电类智能层合结构的力学和计算模型。基于大量国内外有关压电类智能层合结构的文献 ,根据各自采用的运动学假设、场变量的近似、压电层的表达法以及曲率和温度的影响 ,对压电层合结构的力学和计算模型进行了分类 ,阐述了各种理论的特点及一般形式。 相似文献
74.
75.
简并量子拍频三能级系统中的光场压缩效应 总被引:10,自引:1,他引:9
本文讨论了V-型简并量子拍频三能级原子与单模相干辐射场相互作用时的动力学行为,并研究了光场的压缩效应。 相似文献
76.
湿敏半导体材料电导率计算方法的研究 总被引:3,自引:0,他引:3
结合修正了的耗尽层理论和多孔湿敏半导体的特点,本文提出了一个简单的物理模型作为n型湿敏半导体特征的一级近似。描述了多孔湿敏半导体的导电机理,并给出了湿度与宏观电导率的关系。 相似文献
77.
JAMES E. SIMON AMOTS HETZRONI BRUCE BORDELON GAINES E. MILES DENYS J. CHARLES 《Journal of food science》1996,61(5):967-970
An electronic sniffer using semi-conductor gas sensors that nondestructively measured aromatic volatile gas emissions from fruit was developed to assess blueberry quality. The sniffer detected soft and damaged fruit in packaged containers at a 5% level of damage and distinguished four of five fruit ripeness classes: (1) mature-green and green-pink; (2) blue-pink; (3) blue; and (4) ripe fruit. Sniffer response increased as fruit ripened, as did total concentration of aromatic volatiles. Sniffer response correlated with berry firmness, pH, titratable acidity, and color, and detected differences among 10 cultivars, as did impact response analysis. The electronic sniffer is rapid, nondestructive and may be used to sort and quality check for presence of unripe or damaged fruit in closed packs of fresh berries. 相似文献
78.
Wu Ting M. Badaye T. Morishita N. Koshizuka S. Tanaka 《Journal of Superconductivity》1996,9(6):637-645
Recently, superconducting Nd1Ba2Cu3Oy (Ndl23) thin films with high superconducting transition temperature (T
c) have been successfully fabricated at our institute employing the standard laser ablation method. In this paper, we report the results of surface characterization of the Nd123 thin films using an ultrahigh vacuum scanning tunneling microscope/spectroscopy (UHV-STM/STS) and an atomic force microscope (AFM) system operated in air. Clear spiral pattern is observed on the surfaces of Nd123 thin films by STM and AFM, suggesting that films are formed by two-dimensional island growth mode. Contour plots of the spirals show that the step heights of the spirals are not always the integer or half-integer number of thec-axis parameter of the structure. This implies that the surface natural termination layer of the films may not be unique. This result is supported byI-V STS measurements. The surface morphology of the Nd123 thin films is compared with that of thec-axis-oriented Y1Ba2Cu3Sy thin films. Surface atomic images of the as-prepared Nd123 thin films are obtained employing both STM and AFM. STS measurements show that most of the surfaces are semiconductive. The results of STS measurements together with the fact that we are able to see the surface atomic images using scanning probe microscopes suggest that exposure to air does not cause serious degradation to the as-prepared surfaces of Nd123 thin films. 相似文献
79.
80.
通过分折和研究单层门式刚架轻型钢结构厂房中的吊车梁设计,总结了轻型钢结构吊车梁的设计方法和节点连接构造,对合理设计吊车梁,降低用钢量提出了设计建议。 相似文献