LKJ2000型列车运行监控记录装置的发展及应用

随着铁路新技术与设备的运用,铁路列车迎来了信息时代。LKJ2000型监控装置自从2006年开始投入使用以后,为铁路的安全行车起到了至关重要的作用。从我国20世纪60年代以前的行车安全设备,到目前我国现在使用的LKJ2000型列车运行监控记录装置及第六次大提速后动车组最新使用的CTCS2-200H型车载列车自动控制系统,让我国铁路运输的行车安全有了科学技术的保障。     

人影作业点弹药安全存储报警装置设计

本文针对人工影响天气基层野外固定作业点上的弹药安全储存问题,利用红外和微波探测、现场摄像、GPRS/3G无线网络等技术,实现了基层人影野外固定作业点弹药安全存储报警装置的设计。     

济宁市洸府河大桥综合防雷设计

文章通过介绍济宁市!府河大桥综合防雷系统的设计方案,较全面地阐述了对大型跨河流、跨铁路桥梁的直击雷和雷电感应防护的设计技术,提供了一个行之有效的桥梁综合防雷设计方案。     

多媒体教室的合理化建设与使用管理探讨

多媒体教室是实施现代化教学的重要教学场所。近年来的大规模建设使多媒体教室的管理和使用问题开始显现。通过对使用现状的分析,就如何做好前期的合理配置和建设及后期的管理维护工作,提高多媒体使用效率等问题进行探讨。     

特种纸流浆箱控制方式应用研究

介绍安德里兹公司提供的脱气器的作用及原理,分析ABK公司提供的流浆箱在特种纸机流送系统上应用的控制方式;在此控制方式下保证了大型、高速、薄页纸机的产品质量稳定及正常运行。     

On Non-English Majors＇Language Anxiety and its Implications for Oral English Teaching in Higher Vocational College

Many students ex perience language anxiety when they speak English in the class. Many scholars have investigated language anxiety for years, which means that this problem has attracted more and more attention. However, most of researches on language anxiety are carried on among university undergraduates while little research has been done about vocational college students. So, the purpose of this paper is to find out the causes of vocational college non-English majors' language anxiety and explore some implications for teachers to help reducing students' anxiety so as to improve their oral proficiency and ultimately enhance their English learning.     

ICT for education: a conceptual framework for the sustainable adoption of technology-enhanced learning environments in schools

The paper presents an evaluation of student and tutor experiences in the introductory module of a European Masters programme in e‐Learning, Multimedia and Consultancy. The aims and outline of the Masters programme are described, together with the pedagogical approach adopted in the introductory module which explores open and flexible learning environments with students and tutors from four European countries. The second part of the paper evaluates the success of the teaching and learning that occurred in this unit, from the perspective of both the students and tutors. Data collected include student and tutor written evaluations, reflections on the authors’ own roles in the programme, and analysis of the products contained in the environment. The paper concludes by detailing future developments in the Masters programme that have been influenced by this cycle of evaluation.     

一种电梯运行实时监测装置的研制

基于电梯安全日益被大众关注的严峻形势,建立市域级电梯运行实时监测与故障报警系统就变得尤为必要。通过分析电梯常见的几种故障,主要针对关人故障设计了一个独立传感采集装置,以获取电梯重要的运行信息,然后,通过综合分析这些采样信息,智能判断电梯故障并传输至电梯应急救援中心,以提高电梯故障时的救援效率。     

一种测定金属杨氏模量的简易装置

大学物理实验中,金属杨氏弹性模量的测定方法主要为光杠杆法,但该法存在调节比较困难、读数过程存在视差、成本高等不足.本文设计了一种利用激光管测定金属杨氏模量的简易装置,成本低廉且操作简单,准确度较高.     

Y分支平面波导型光分路器的研制

研制了Y分支平面波导型光分路器,采用半导体工艺制备了1×8平面光波导芯片,经过耦合对准和黏接完成了芯片的封装。对研制的平面波导型光分路器在1 270¹ 570 nm波长范围内的插入损耗进行了测量,在该波长范围内插入损耗曲线较平坦。这表明平面波导型光分路器的插入损耗在所测试波段对波长不敏感,而熔融拉锥型光分路器的插入损耗曲线表现出明显的窗口限制。同时对1 310、1 550 nm处8个输出口的传输特性进行了表征,偏振相关损耗都小于0.05dB,而回波损耗均大于50 dB。结果表明,PLC光分路器具有良好的传输性能。