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提出了用多路合成全息语音发音器官图谱显示发音器官动态过程的方法,介绍了该全息图的制作过程,讨论了制作过程中绘制的二维线条图片的线条宽度与全息图的衍射效率之间的关系。研制的多路合成全息图在白光点光源照射下,显现出清晰、明亮的发音器官(唇、舌、齿和软腭等各部分)的动态影像。最后对该图谱的应用前景进行了讨论。 相似文献
3.
本文利用城市地下水开发利用管理图集,全面系统地反映城市供水状况、地下水开采现状、地下水赋存的地质环境、资源量、质量,提出地下水资源开发利用管理的工作程序和对策,展示了地下水资源的分布、开发利用、规划和管理的全过程。探讨了城市地下水开发利用管理图集的编制方法。 相似文献
4.
地图是按照一定的潜则显示地表面自然和社会现象的图,并概括反映它们的地理分布、相互联系和相互制约的关系。图经(中国古代地图)的绘制在我国古代一直都有着非常重要的地位。该文尝试从建筑角度分类及分析进行初探,力求发现一些不同的概念和意义。 相似文献
5.
Jong-chul Choi 《Digital Creativity》2018,29(2-3):235-248
Taking the Atlas Group (1989–2004) as a case study, this paper examines the aesthetic, political and technological possibilities of the digital archive. The Atlas Group is a fabricated digital archive founded by the Lebanese-American media artist Walid Raad, and it deals with the illusive history of the Lebanese Civil War (1975–1991). The digital takes an important role in Raad’s fictional archive, as it creates a tangible indexical fantasy that I would call the para-index. The para-index (an indexical sign without a referent) works to bring back Lebanon’s forgotten past by simulating / prefiguring its sensible form. Critic Rosalind Krauss calls this prefiguration of an aesthetic form within medium’s inherent technical property ‘the reinvention of the medium’ in this post-medium era. This paper aims to articulate how the Atlas Group reinvents the archive in this age of digital reproduction, and how this reinvention illuminate Lebanon’s unknown history. 相似文献
6.
Land use morphology has profound effects both on city functions and peri-urban areas. They can either lead to conflicts with negative side effects or generate positive synergies. This study focuses on land use spatial configurations and interprets the interactions among them. In order to evaluate spatial planning policies, the measurement of urban land use patterns is considered to play an important role in the urban development process and deserves further attention. A comparative analysis of the land use patterns of the medium-sized Hellenic cities is attempted, there are also used using pre-existing metrics, some new data from the European Environment Agency Urban Atlas 2006 geodataset and population and construction census data concerning the last decade from the national Hellenic Statistical Authority data set. The Larger Urban Zones of the medium-sized Hellenic cities are chosen as a suitable study level based both on population size and socio-spatial procedures. The results provide interesting information about the diversification among medium-sized cities, while some particularities concerning urban procedures appear to emerge for some of them. Many discussion points arise from this study concerning the data availability, the method, the functional city area delineation and the Larger Urban Zones definition. 相似文献
7.
基于图形处理技术的连杆曲线特征参数提取的研究 总被引:4,自引:0,他引:4
提出了平面连杆曲线特征参数提取的一种新方法,通过选取一些几何参数作为曲线图谱的特征参数,使表达的几何意义直观明确。充分利用CAD中的图形处理技术来提取特征对数,从而使计算量少,识别容易,为图谱的选取和尺度综合提供了一种新方法。 相似文献
8.
The CIE tristimulus values of measured Swiss Colour Atlas samples were converted to Munsell notations using a colour notation conversion program. A selected subset of SCA-2541 sample points was chosen: the samples on the fully populated regularly spaced hues 6, 12, 18, 24, 30, 36, 42, 48, 54, and 60. The resulting Munsell notations were plotted onto Munsell Value-Chroma and Hue-Chroma planes and analysed for regularity of spacing and hue distribution around the achromatic axis. An earlier article has detailed the interrelation between the Natural Color System (NCS) and the Munsell Color Order System using similarly constructed charts. Comparison is made with the sample spacing of the NCS and SCA-2541 points when mapped into Munsell colour space, to determine similarities and differences between these two geometrically similar systems; both are double cones forming equilateral triangular constant hue planes. © 1997 John Wiley & Sons, Inc. Col Res Appl, 22, 111–120, 1997 相似文献
9.
从半导体器件物理角度出发,分析了P+-N-N+功率二极管零输入态下正向恒定电流IF与反向电流峰值IRM的解析关系。根据误差函数与初等函数的近似关系,推出简约解析关系式:(IRM/IF)=a+b×ln(IF+1)。在检测电路中引入反向平衡电流源,利用仿真软件Silvaco-Atlas获得瞬态仿真实验数据。通过Matlab软件对实验数据进行拟合分析,并对简约式适用范围和相关结论进行了验证。研究结果对P+-N-N+功率二极管的应用和相应电路系统的可靠性具有指导意义。 相似文献
10.
G. Mullineux 《Mechanism and Machine Theory》2011,46(11):1811-1823
An atlas or catalogue of mechanisms provides a useful aid in the synthesis of mechanisms for new applications. The atlas stores mechanisms together with their coupler paths. Fourier techniques can be used as a convenient means for representing, in normalized form, curves for planar mechanisms. This paper looks at the extension to spherical four-bar mechanisms. In particular, a means for projecting a spherical curve onto a plane is discussed which depends only on the geometry of the curve and not on the choice of world coordinate system. 相似文献