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前兆远程子台CDMA传输故障诊断及排除 被引量:1
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作者 龚永俭 陈嵩 +1 位作者 胡雪琪 马丽丽 《震灾防御技术》 CSCD 2013年第1期97-103,共7页
本文简要介绍了CDMA传输技术及其在地震前兆远程子台的应用,之后以天津市地震局宝坻地震台的远程子台为实例,对地震前兆远程子台CDMA传输中的故障原因进行了研究,指出导致CDMA传输故障的原因主要有:仪器通讯部分故障、资费余额不足、路... 本文简要介绍了CDMA传输技术及其在地震前兆远程子台的应用,之后以天津市地震局宝坻地震台的远程子台为实例,对地震前兆远程子台CDMA传输中的故障原因进行了研究,指出导致CDMA传输故障的原因主要有:仪器通讯部分故障、资费余额不足、路由器"假死"、路由器死机、路由器内部故障(特别是SIM卡接触不良)、CDMA信号强度不够、交换机故障、传输硬件连接断路等。在此基础上提出了一套行之有效的故障诊断流程,并对常见故障原因的判定和排除方法做了归纳整理。本文对使用CDMA传输方式或其他无线传输方式的地震前兆远程子台的维护管理人员有一定的参考意义。 展开更多
关键词 远程子台 CDMA传输 故障诊断 故障排除 网络维护
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Taiwan Residents Learners' Motivation and Attitude Towards Completing an Online Distance Education Course During a One Year Industrial Placement
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作者 Pamela Cowan Mei-Liang Lin 《Sino-US English Teaching》 2014年第7期477-494,共18页
This mixed methods study investigated language learning motivation in an one-year e-learning course for technological university students to bridge the geographical divide between students on industrial placements whe... This mixed methods study investigated language learning motivation in an one-year e-learning course for technological university students to bridge the geographical divide between students on industrial placements when studying graded readers using an e-learning course to improve their English competence and to pass the General English Proficiency Test. Data was collected through questionnaires and course feedback. The results of this study extend Gardner's socio-educational model in an e-learning environment by adding the new category, Computer Attitudes, which was proven to be highly correlated with Motivation. Although the low proficiency English students had good computer skills, their habits of using the computer for entertainment and their lack of the skill of "technological communication efficacy" caused increased anxiety when using computers and thus provided them with a lower computer confidence over time. Consequently, it is recommended that sound e-learning training should be provided to all of the students prior to embarking on an e-leaning course so that these learners can benefit from online language learning in the future. 展开更多
关键词 e-learning MOTIVATION computer attitude language learning English proficiency
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