排序方式: 共有7条查询结果,搜索用时 15 毫秒
1
1.
针对输电线路距离长、覆盖范围广,易受到自然环境和人为因素的影响,对输电线路故障分类和识别非常困难.在输电线路故障分类中将经验小波变换与改进的学习矢量量化神经网络相结合,使用经验小波变换提取输电线路的故障特征,并使用改进的学习矢量量化神经网络识别故障特征.通过对不同故障类型、故障位置、过渡电阻和初始故障角度进行仿真,验证该模型的准确性和有效性.仿真结果表明,该方法在故障分类中具有一定的优势,不受上述因素的影响,具有良好的鲁棒性和故障分类性能.该研究为中国输电线故障识别技术的发展提供一定的参考. 相似文献
2.
3.
宋亮亮 《科技情报开发与经济》2005,15(19):146-147
简述了我国上市公司股权结构的特点,探讨了股权结构对股利政策的影响,提出了改善股权结构的措施. 相似文献
4.
通过对国际、国内解构主义时装的分析,探究解构主义对于中国服饰文化的深刻意义.解构主义意味着一种文化策略,而不是意识形态的模仿对象.中国人必须从自己的民族经验出发,策略性地利用后现代语境下日益多元的服饰元素,重新建构属于中国人自己的服饰话语,在自己生活的时代创造出独特的外观表达. 相似文献
5.
中国原始岩画中的服饰表现,反映了早期人类对服饰独特的审美观点.通过分析归纳这些服饰的款式、表现手法、色彩运用等特点,表明它们不仅但是对服装的再现,更体现了早期人类的宗教、审美、图腾崇拜等社会因素.认为岩画中的服饰是原始先民的心理情感和精神状态的真实写照,具有丰富的文化内涵. 相似文献
6.
The capacity that computer can solve more complex design problem was gradually increased. Bridge designs need a breakthrough in the current development limitations, and then become more intelligent and integrated. This paper proposes a new parametric and feature-based computer aided design (CAD) models which can represent families of bridge objects, includes knowledge representation, three-dimensional geometric topology relationships. The realization of a family member is found by solving first the geometric constraints, and then the topological constraints. From the geometric solution, constraint equations are constructed. Topology solution is developed by feature dependencies graph between bridge objects. Finally, feature parameters are proposed to drive bridge design with feature parameters. Results from our implementation show that the method can help to facilitate bridge design. 相似文献
7.
1