线切割电参数的合理选择

分析了线切割参数对线切割加工工艺指标的影响,指明了怎样合理选择切割线参数。     

PLC实现高炉上料系统的自动控制

PLC及其网络在工业自动化控制领域越来越受到重视和普及应用，它的应用提高了高炉上料系统的自动化水平、可靠性，实现了上料系统的实时监控和灵活方便的工艺配方。文章主要介绍某钢铁厂120m^3高炉上料系统采用PLC及其网络控制的软硬件设计方案、方法、要点和经验。     

基于WEB与PLC的远程电力监控系统的设计与实现

嵌入式W eb服务器的实现使得用户可以通过浏览器对系统进行监控、管理,也为用户提供丰富、直观的数据表现形式;可编程序控制器(PLC)由于具有程序设计灵活方便、通用性好、抗干扰能力强、可靠性高、能在恶劣的工作环境长期工作等特点,成为工业自动化领域中发展极其迅速的通用控制装置;本文综合嵌入式W eb服务器和PLC的优点,设计一套高性能的远程电力监控系统。     

用ISP器件设计交通信号灯控制器

本介绍一种用ISP器件设计交通信号灯控制器的方法，其构思巧妙，功能强大。本设计在GW48—CK型EDA开发系统上已获通过。     

EBF网络特征映射和恢复及其在鲁棒话者识别中的应用

The performance of speaker verification systems is often compromised under real-world environments. For example, variations in handset characteristics could cause severe performance degradation. This paper presents a novel method to overcome this problem by using a non-linear handset mapper. Under this method, a mapper is constructed by training an elliptical basis function network using distorted speech features as inputs and the corresponding clean features as the desired outputs. During feature recuperation, clean features are recovered by feeding the distorted features to the feature mapper. The recovered features are then presented to a speaker model as if they were derived from clean speech. Experimental evaluations based on 258 speakers of the TIMIT and NTIMIT corpuses suggest that the feature mappers improve the verification performance remarkably.     

再论高等职业教育是一种类型

本文从世界高等教育发展史、我国高等职业教育发展史和我国学位制度的演变说明高等职业教育是一种类型,并对今后我国职业教育的发展从认识上、制度上、具体办学上相应提出了建议。     

竖直循环式立体车库PLC控制系统

简要介绍了竖直循环式立体车库，并针对其结构进行了控制系统的设计，主要采用微型计算机和PL来组成自动存取车控制系统，利用IC卡控制器产生的辨识信息，以通信的方式去控制PLC操作，将刷卡、计时计费与自动存取车系统有机地结合起来，实现管理系统的自动化。     

Pre-service and In-service Secondary School Teachers’ Knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and Attitudes toward Students with ADHD

This article reports on a mixed-method inquiry into pre-service and in-service secondary school teachers’ knowledge about Attention-deficit Hyperactivity Disorder (ADHD) and attitudes toward students with this disorder in Hong Kong. The inquiry revealed no differences between pre-service and in-service secondary school teachers concerning their knowledge of ADHD and attitudes toward students with ADHD. It also identified possible sources of participants’ knowledge and a variety of factors underlying their attitudes toward students with ADHD including sociocultural beliefs and working conditions. The findings call for teacher educators to develop better education programmes to support both pre-service and in-service teachers in undertaking the challenging task of teaching students with ADHD.     

Starting and Sustaining an Undergraduate Research Program: The SURIEM Experience at Michigan State University

Abstract

Mentoring undergraduate students in research is both rewarding and challenging. In this paper we present how we established a summer Research Experience for Undergraduates (REU) program in the mathematical sciences at Michigan State University. A goal of our REU is to include students who are at an early stage of their study of mathematics. We share our experiences in recruiting students, designing research projects, and mentoring our participants. We discuss the challenges we faced and the solutions we found while working with a diverse group of undergraduate students from across the nation.     

基于组态王与PLC的工业控制系统

简要介绍组态软件和工控系统,并以日本松下电工FP1产品为例对如何利用组态王软件建立工业控制系统作了说明。