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The efficient, economical and often elegant transformation from a design schema to an embodied design solution containing real components is essential for the commercial success of a product. More often the ability of the designer to explore an optimum solution is severely frustrated by the analytically intensive and time-consuming aspects of embodying a concept. This paper presents a computer based system-modelling tool that is to be used by designers during the transformation of a concept to an embodied solution particularly to deal with standard components. This environment provides for the representation of conceptual schemas and subsequent embodiment from computer based component selection modules. These selection modules encompass the full range of electronic representations for standard mechanical components. The strategy for representing a mechanical system, its included components and their associated representations is discussed. The process of constructing a system model, specifying the desired performance characteristics and system resolution are also described. 相似文献
3.
王龙 《数字社区&智能家居》2006,(7):5-5,19
本文介绍了MOC组件的安装与使用,并给出了C#.NET for Windows数据库项目开发中应用MOC组件编程的一个实例。 相似文献
4.
本文介绍亚州第一台模拟分量电视车视频系统的设计思想,比较详细地阐述了该车的各种功能,总结了不同于复合电视车的新特点。 相似文献
5.
Safe and Economic Operation of Power Plants – Research Results in the Field of Materials, Design and Maintenance Components of power plants which undergo high temperatures are subjected to complex loading situations. The requirements on the used materials result from the special operation conditions of the plants and have to be adjusted to the steadily growing requirements on higher efficiency of the complete power plant as well as to those of safe and economic operation. The expenses for control and downtimes are directly connected with economic efficiency and availability. However, in case of new procedures or components it is not possible to revert to the existing know‐how. Different failure mechanisms than known before can occur. The same goes for the load situation. Therefore the knowledge base has to be extended to in‐advance or even parallely running scientific examinations that life assessment and maintenance strategies can be applied which guarantee the operational reliability and the efficiency of the plant. The main emphasis of these F&E works has to be put on condition monitoring based on actual operational data, the standard materials’ and component’s behaviour (deformation, damage and failure behaviour) in connection with design of components and the related material laws. In the framework of applied AVIF projects, following problems are handled:. – qualification of materials by determinating parameters related to practise. – optimal design of components by making available material laws and numerical tools. – economic manufacturing of components by qualifying processing methods such as welding. – The results can be transferred to concepts for safe and economic operation of power plants, especially for newly introduced materials for which there is no operational experience available. 相似文献
6.
Shosuke Sasaki 《Journal of Low Temperature Physics》2007,148(3-4):97-102
The experimental width of the second sound peak in Brillouin scattering is less than the instrumental width. It is also less
than the width of the first sound peak near the λ point. The theoretical width of the second sound peak becomes infinitely large at the λ point in the traditional viewpoint. This discrepancy suggests that the second sound peak detected in Brillouin scattering
is an elementary excitation. We calculate the specific heat of liquid helium near the λ point by considering the second sound peak. The calculated temperature-dependence of the specific heat has a logarithmic
divergence at the λ point. Furthermore, the calculated values of the specific heat agree well with data derived from experiments. 相似文献
7.
基于XML的构件化企业模型描述及应用 总被引:2,自引:0,他引:2
当今世界Internet/Intranet技术的迅速发展,对企业建模也提出了网络化的要求。而当前众多的建模工具都还没能适应这一要求,或是才开始起步。鉴于这种状况,提出了基于XML技术的描述构件化模型的思想,以对当前已经比较成熟的建模技术进行XML的改造,讲述如何实现基于XML的构件化企业模型描述及应用。 相似文献
8.
介绍了光纤传输数字电视的意义,电视信号分量数字化的标准和优点。利用自行研制的270Mb/s光发射机和光接收机,建立了分量数字电视信号的光纤传输系统,直接传输了100km光纤,系统传输无误码,传输后图像质量不变。光接收机灵敏度达-29.24dBm,动态范围为13.5dB。无压缩电视图像的传输对于远程医疗和演播室间转输节目等有非常实际的意义。 相似文献
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10.
张少娴 《计算机技术与发展》2012,(11):141-144
P2P网络和P2P相关技术一直是计算机网络研究的一大热点。P2P网络具有大规模、高动态性的特点,这使得在真实环境中实际运行、测试一个它需要付出巨大的努力和昂贵的开销。而P2P模拟器具有的优势能为P2P网络研究带来很大的方便,研究者们只需要将精力集中于想要关注的性能,丽不必花费大量的时间和精力去编写实验工具。文中深入研究了PeerSim模拟平台上模拟P2P环境的构建方法,并在其上实现了一个简单的负载平衡算法。最后,通过实验来说明PeerSim模拟器的使用方法,展示了PeerSim组件化的构造思想和灵活的配置机制。 相似文献