Protel dxp 2004电子线路设计软件使用经验初探

在电路设计中有效利用Protel DXP 2004电路设计软件能使电路设计在布局和布线方面更趋合理.通过论述Protel DXP 2004电路设计软件使用技巧,达到得心应手使用Protel DXP 2004软件进行设计的目的。     

基于Protel DXP的电路设计技巧

Protel DXP作为一款专用的电子线路设计软件,其强大的设计功能得到了电子线路设计人员的青睐。从原理图设计和PCB设计两大模块出发,阐述了Protel DXP在使用中的一些设计技巧和原则。     

自建Protel DXP原理图元器件库

Protel DXP是一款优秀的电路设计软件,集电路原理图设计、PCB设计及仿真为一体,已经成为高等学校电类专业电路CAD课程教学的主要内容。该文详述了Protel DXP中自建原理图元器件库的建设和维护,为经常使用Protel DXP绘制电路原理图的用户提供了一种便捷的方法。     

浅谈Protel DXP教学若干问题

Protel DXP是一款应用广泛的电子线路设计软件。很多高校开设了该门课程。结合教学实际,谈谈如何使学生快速入门、教学中的注意事项以及教学改革的几点建议。     

进一步分析PROTEL DXP电路原理图设计

Altium公司作为EDA领域里的一个领先公司,在原来Protel 99SE的基础上,应用最先进的软件设计方法,率先推出了一款基于Windows 2000和Windows XP操作系统的EDA设计软件Protel DXP。     

浅析GFH5653数字钟Protel绘制设计

本项目通过一款单片机数字钟的电原理图绘制和PCB板设计为案例进行讲解,旨在让读者进一步掌握应用Protel DXP 2004SP2软件进行较复杂电路原理图绘制高级技巧和两层PCB板设计方法,并介绍了一种制作精度更高的PCB板手工制作工艺。     

Protel DXP2004的应用分析

Protel DXP 2004是Altium公司最新一代全线的桌面板级设计系统。该软件具有绘制原理图、设计印刷电路板、电路仿真等功能,具有操作简单,实用性强等优点。是电子工程师、电路设计工作者和大中专院校师生进行电子设计最有用的设计软件之一。本文结合实际需要,探讨了该软件在电路设计中的应用,研究了该软件的仿真功能在电子电路实验教学中的应用,分析了利用该软件设计的电路原理图插入Word文档的具体操作方法,并对操作该软件的方法步骤进行较为详尽的阐述。     

任务驱动教学法在Protel DXP教学中的应用探讨

任务驱动教学法是建构主义教学理论基础上,以学生为中心,以任务作为驱动的教学法,非常适用于实践性很强的Protel DXP课程的方法。通过学生完成一个个任务,从而激发学生自主学习的积极性,让学生可以在时间中学会理论知识,掌握技巧。本文阐述了任务驱动教学法在Protel DXP课程教学中的应用,分析任务驱动教学法的教学原理,以供参考。以期达到改善教学效果的目的。     

电子线路CAD-PROTEL课堂教学方法探析

Protel DXP是较早进入我国的一种电子线路设计软件。目前,我国大多数高校开设了该软件课程。该文根据学生学习该软件的情况,研究如何对该课程进行课堂教学以及探析CAD-PROTEL课程的教学方法。     

基于ProtelDXP2004机床控制线路元件库的绘制研究

Protel DXP 2004是集电子线路原理图、PCB设计及仿真等功能于一体的可视化应用软件,但在绘制每种机床控制线路图时,需要单独绘制常用电气元件,不能像电子原理图一样直接从Library元件库调用。为方便绘制机床控制线路原理图,研究了机床控制线路常用电气元件库创建方法,然后将机床控制电气元件库加载到软件安装目录下Library元件库中,直接从电气元件库调用,基本可以满足常用机床控制线路原理图的设计和绘制,提高了绘图效率和绘图质量,扩大了软件的功能。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.