仪器仪表工程专业研究生实践创新能力培养

介绍了北京信息科技大学仪器仪表工程专业研究生培养方案,包括教学体系和课程体系的改革与实践,实验内容和考核方式的改革与实践,鼓励学生参加各类学科竞赛,加强研究生实践基地建设等,以提高学生实践和创新能力,最终实现对其相关能力的培养。     

The Development of an Instrument for a Technology-integrated Science Learning Environment

This study developed, validated, and utilized the Technology Integrated Classroom Inventory (TICI) to examine technology-integrated science learning environments as perceived by secondary school students and teachers. Using technology-oriented classroom climate instruments and considering the science classroom’s characteristics, TICI was developed. More than 1,100 seventh through ninth grade science students validated the instrument, revealing eight scales: technological enrichment, inquiry learning, equity and friendliness, student cohesiveness, understanding and encouragement, competition and efficacy, audiovisual environment, and order, with alpha reliabilities ranging between 0.69 and 0.91 (0.93 for the entire questionnaire). In measuring actual and preferred learning environments, TICI results indicated that both students and teachers ranked equity and friendliness highest. The largest actual–preferred discrepancy was order (students) and inquiry learning (teachers). TICI offers additional utilities for technology-enriched science leaning environments.     

Pasts and futures that keep the possible alive: Reflections on time,space, education and governing

Abstract

Over the last years, the European Commission has heavily promoted various forms of digital education. In this article, we draw upon two recent European policy documents as key articulations of Europe’s contemporary governing apparatus: Opening Up Education and the Digital Education Action Plan. The article more particularly conceives of both policy documents as offering a point of departure to analyze how this apparatus is presently seeking to enact a specific mode of existence of the contemporary learner. We argue that this educational mode of existence is being enacted by the fabrication of highly specific sorts of time and space. In order to highlight the particularity of the enacted sorts of time and space exemplified in the policy documents, we start this article with a discussion of how a traditional, modern governing apparatus aims to fabricate linear time and institutional space. The article proceeds by arguing that the present-day European governing apparatus that is concerned with digital education fabricates different sorts of times and spaces, namely potential (rather than linear) temporalities and ecological/networked (rather than institutional) spatialities. Likewise, the concrete instruments (such as platforms, portals, credits and certificates) presently adopted in order to do so largely differ from modern instruments. Conclusively, we argue that the presence of these newly emerging (often digital) instruments, and the times and spaces that are fabricated through these instruments, call for an opportunistic mode of existing as a contemporary learner.     

八通道脑电信号前置放大器设计

介绍了基于仪表放大器和通用滤波器的八通道脑电信号放大电路的设计方案。该方案通过多级放大和滤波,有效地消除了脑电信号强大背景噪声的干扰,从而实现微弱脑电信号的放大,采集到准确清晰的脑电波形。放大器结构简单,八个通道能实现从大脑皮层不同区域并行采集。     

MCU和CPLD组成的船用仪表显示接口

针对通常微控制器(Multi Control Unit, MCU)接口设计方法所需芯片种类多、印刷线路板面积大及设计复杂等缺点,采用复杂可编程逻辑器件(Complex Programmable Logic Device, CPLD)设计方法,合理设计智能仪器仪表的微控制器外围电路.微控制器外围的看门狗监视电路、接口电路、地址锁存器、地址译码器和I/O扩展接口由CPLD XC9572XL编程实现.CPLD多种数字逻辑系统功能的实现,使芯片种类和数量减少、管脚定义灵活、电路板设计简化.实验表明:系统体积缩小,系统的性能和可靠性提高.由MCU和CPLD组成的高性能和高可靠性的嵌入式仪器仪表为船用仪器仪表系统提供新的途径.     

测控技术与仪器专业实践教学体系建设

实践教学是培养学生创新思维与能力的重要教学环节之一,经过几十年的建设,形成了"长期坚持教学科研紧密结合,不断完善实践教学体系,注重培养学生创新精神与实践能力"的办学特色,在培养方案设计、实验室建设、实验室开放、毕业设计质量监控和课外科技创新实践活动开展等方面取得了良好效果,具有一定的示范作用。     

一种易部署的Android APP动态行为监控方法

Android平台目前已经成为恶意代码攻击的首要目标,超过90%的Android 恶意代码以APP的形式被加载到用户设备.因此,监控APP行为成为对抗Android恶意代码攻击的重要手段.然而,已有的监控手段依赖于对Android系统底层代码的修改.由于不同OEM厂商对Android系统的严重定制,直接改动商用Android系统的底层代码很难由第三方人员部署到用户设备.本文在分析Android进程模型和代码执行特点的基础上,提出一种在应用层实现的程序行为监控方案,通过动态劫持Android虚拟机解释器的方法,实现对应用程序代码执行情况的全面监控.由于不直接对Android系统源码进行任何改动,该方案可以灵活、快速地部署在不同型号、不同版本的Android移动终端上.通过对原型系统的实现和测试,发现该系统易于部署、监控全面并且性能损耗较低.     

基于CDIO理念的测控专业综合训练改革探索

针对我国目前工程教育存在的问题,在介绍CD IO工程教学理念的基础上,探讨了基于CD IO教学理念的测控技术与仪器专业综合训练教学改革与实践,提出了该课程教学改革的具体措施。实践表明,取得了较好的效果。     

流量计选型的几个关键点

项目的设计审核对工程项目非常关键,对于仪表工程设计审核的主要内容和审核方法、注意事项等做了详细的阐述,使仪表工程人员的审核工作思路清晰、轻松自如。     

虚拟仪器技术在发动机油耗测试中的应用

针对传统油耗测试仪器存在的问题,基于虚拟仪器技术用失重法原理设计了发动机油耗测试系统,系统由凌华IPC610工控机、DAQ2214多功能数据采集运动控制卡,调理电路、称重传感器、油箱、电磁阀及各路油管等组成,用LabVIEW进行软件设计.该系统可与电涡流测功机测控系统有机结合,形成发动机测控系统.