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Protel 99SE软件是专门用于电路原理设计和印刷电路板设计的EDA工具软件。本文通过数字电压表的设计实例探讨了在电子技术课程设计中引入计算机设计技术的意义和方法。 相似文献
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关于Protel99SE教学实践探讨 总被引：2，自引：0，他引：2
Protel制图软件的应用已经非常普及,是电子类学生必须掌握的工具之一。为了提高教学效率,本文主要探讨了侧重实际应用的教学方法,学生在学习Protel制图时易犯的一些错误,以及教师在教学中应注意的若干问题。 相似文献
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浅谈"电子线路CAD"课堂教学 总被引：1，自引：0，他引：1
方水平 《北京工业职业技术学院学报》2006,5(4):27-29,36
DXP是较早进入我国的一种电子线路设计软件,大多数高职院校开设了该软件课程.根据学生学习该软件的情况,谈谈如何对该课程进行课堂教学以及在教学中应该注意的事项. 相似文献
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Tony Russell-Rose Jon Chamberlain Leif Azzopardi 《Information processing & management》2018,54(6):1042-1057
Legal researchers, recruitment professionals, healthcare information professionals, and patent analysts all undertake work tasks where search forms a core part of their duties. In these instances, the search task is often complex and time-consuming and requires specialist expertise to identify relevant documents and insights within large domain-specific repositories and collections. Several studies have been made investigating the search practices of professionals such as these, but few have attempted to directly compare their professional practices and so it remains unclear to what extent insights and approaches from one domain can be applied to another. In this paper we describe the results of a survey of a purposive sample of 108 legal researchers, 64 recruitment professionals and 107 healthcare information professionals. Their responses are compared with results from a previous survey of 81 patent analysts. The survey investigated their search practices and preferences, the types of functionality they value, and their requirements for future information retrieval systems. The results reveal that these professions share many fundamental needs and face similar challenges. In particular a continuing preference to formulate queries as Boolean expressions, the need to manage, organise and re-use search strategies and results and an ambivalence toward the use of relevance ranking. The results stress the importance of recall and coverage for the healthcare and patent professionals, while precision and recency were more important to the legal and recruitment professionals. The results also highlight the need to ensure that search systems give confidence to the professional searcher and so trust, explainability and accountability remains a significant challenge when developing such systems. The findings suggest that translational research between the different areas could benefit professionals across domains. 相似文献
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Human collaborative relationship inference is a meaningful task for online social networks and is called link prediction in network science. Real-world networks contain multiple types of interacting components and can be modeled naturally as heterogeneous information networks (HINs). The current link prediction algorithms in HINs fail to effectively extract training samples from snapshots of HINs; moreover, they underutilise the differences between nodes and between meta-paths. Therefore, we propose a meta-circuit machine (MCM) that can learn and fuse node and meta-path features efficiently, and we use these features to inference the collaborative relationships in question-and-answer and bibliographic networks. We first utilise meta-circuit random walks to obtain training samples in which the basic idea is to perform biased meta-path random walks on the input and target network successively and then connect them. Then, a meta-circuit recurrent neural network (mcRNN) is designed for link prediction, which represents each node and meta-path by a dense vector and leverages an RNN to fuse the features of node sequences. Experiments on two real-world networks demonstrate the effectiveness of our framework. This study promotes the investigation of potential evolutionary mechanisms for collaborative relationships and offers practical guidance for designing more effective recommendation systems for online social networks. 相似文献
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本文针对普遍采用结构化分析的软件工程的管理信息系统程序繁杂、可维护性差、效率低的缺点,提出了一种基于OOSE和UML的系统分析和设计方法。该系统具有运行可靠、高效、查询方便、可扩展和易维护的特点。 相似文献
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谢永平 《南通师范学院学报》2008,(2):80-85
徽商势力的兴起与东南城镇经济的发展演变在时间上是同步的。明代成化、弘治年间,徽商随着东南城镇经济的发展初步形成;嘉靖、万历年间,徽商随着东南城镇经济的繁荣而壮大;明清之际,东南城镇惨遭破坏,徽商势力也因之而受挫;清代康熙、乾隆年间,东南城镇经济的发展超过了明代的水平,徽商势力也进入了它的鼎盛时期。徽商的兴起与东南城镇的发展存在着密不可分的联系。 相似文献
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本阐述使用Protel99同步器设计电路印制板图的优点，结合一个具体实例详细介绍如何使用Protel99同步器从电路原理图件直接生成电路印制板图件的方法，以及如何实现电路原理图和电路印制板图之间的双向同步编辑。 相似文献
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林蔚 《Journal of Zhangzhou Technical Institute》2007,9(2):16-18
Protel99由于其功能完善、易于掌握和使用方便等特点,成为最为流行的电子设计自动化工具。通过实例论述仿真分析电路的具体方法。 相似文献