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981.
肖继军 《科技广场》2012,(1):153-155
本文围绕应急指挥系统的应用需求,选用合适的同线通信体制及技术完成数话同传功能,系统综合考虑的因素包括通信距离、传输带宽、功耗、传输误码率等,在此基础上选用PL2000调制解调器完成线路信号调制功能,选用AMBE2000编解码芯片完成64K话音信号转换为2K话音信号,选用ARM7处理器完成全系统的硬件初始化、数据包业务处理。本文的创新点在于采用电力线载波通信技术为基础构建同线通信系统平台,完成多路节点之间的数话同传功能,这在国内相关产品的实现中尚属首次。  相似文献   
982.
高职高专英语实行分级教学已成大势所趋。在对山西林业职业技术学院(以下简称我院)英语分级教学的利弊进行了系统总结的基础上,提出了英语听说课外分级辅助教学,通过分析其实施模式和问卷调查,肯定了课外分级辅助教学符合《高职高专教育英语课程基本要求》的指导原则,使教学方法更为灵活,同样做到因材施教,辅助课堂分级教学取得更好效果。  相似文献   
983.
    
The authors examined whether Reading Rescue continues to be an effective literacy intervention and factors that impact its effectiveness. Data were collected on 143 first-grade students, tutored by 104 tutors at 38 schools. There was significant growth on all foundational skills (ps?ps?d?=?1.62 sight words, d?=?1.68 oral reading/comprehension). Student-level factors of Individualized Education Program status, program completion, number of session, and invented spelling; tutor-level factors of sessions delivered and years of experience; school level factors of school size and percentage of language minority students all predicted grade-level passage or word reading (all ps?2007 Ehri, L. C., Dreyer, L. G., Flugman, B., &; Gross, A. (2007). Reading rescue: An effective tutoring intervention model for language-minority students who are struggling readers in first grade. American Educational Research Journal, 44(2), 414448.[Crossref], [Web of Science ®] [Google Scholar]) study. Efforts should focus on ensuring program completion and increasing program exposure in neediest schools.  相似文献   
984.
上古汉语复合词的界定问题一直是汉语史研究的难点。今文《尚书》正处于单音词向复音词演变的重要阶段。今文《尚书》中的复合词主要有五个界定标准:意义标准、结构标准、语法标准、修辞标准和文化标准,这些标准的确立和运用对汉语复合词的研究具有重要的参考价值。  相似文献   
985.
Internationalisation has accentuated the importance of intercultural communicative competence (ICC) among language learners in higher education in the 21st century. As in the case of Taiwan, universities worldwide have begun to emphasise intercultural ‘literacy’ in language classrooms. Following Byram’ (1997) ICC model, this study adopts an intercultural approach to language classroom in order to investigate the effectiveness of explicit instruction in developing ICC among EFL (English as a Foreign Language) learners in Taiwan, and to discover how this development is related to the background factors of overseas experience and English proficiency. The accompanying research therefore has two purposes: (1) to evaluate the effectiveness of explicit instruction on EFL learners’ development of ICC by employing both self-assessment and other assessment tools and (2) to investigate the relationship between the development of ICC and two background factors. The results show that (1) explicit instruction is effective in raising students’ development of ICC, especially the knowledge and skills dimensions, and (2) English proficiency and overseas experience are significantly related to better acquisition of ICC.  相似文献   
986.
This article reports consequences for student writing quality based on a long-term professional learning project. Project teachers, representing all school subjects in grades 3–7, were presented with a writing construct, ‘Wheel of Writing’, and norms of expectation for writing proficiency. Participating teachers used the writing construct and norms as a basis for writing instruction and writing assessment. The project was conducted in 24 schools across Norway. 3088 students from 20 project schools participated. Two hundred and thirty three students from 4 schools were used as a comparison group. The investigation showed that students in primary school improved their writing quality significantly. Students in lower secondary school did not. However, there was substantial variation in writing quality effects between schools, classes, and individual students. For instance at a number of schools, project students from lower secondary school improved their writing quality significantly. The article discusses potential explanations of the effects.  相似文献   
987.
分析了三维模型库在机械制图课程教学应用中客观存在的问题,探讨了能满足机械制图教学要求的三维模型资源库结构,并给出了该网络化三维模型库在机械制图课程教学中的应用形式和实例。  相似文献   
988.
近年来,河南省财政加大对公共文化服务的投入,在公共文化服务体系建设方面取得了比较大的成绩,但是也存在投入总量不足、投入结构不合理、财政投入的城乡差异明显、公共文化投资主体单一等问题。公共财政作为政府履行公共文化服务职能的物质保障,各级财政部门要加大公共文化的投入力度,优化支出结构,创新支出方式,建立多渠道的社会投入机制、注重财政对公共文化支出的绩效管理,促进文化强省战略的实现。  相似文献   
989.
建立科学、系统、有效的课堂演示型多媒体课件评价指标体系,可为设计开发者诊断出多媒体课件存在的问题及广大用户选择多媒体课件提供重要依据,对大范围推广使用合格和优秀的多媒体课件,以及进一步改进和提高多媒体课件质量具有现实意义。  相似文献   
990.
This essay seeks to establish a metaphor of the professional practice of teaching to the attributes and training of an offensive lineman in the game of American football. Effective classroom instruction does not rely exclusively on a rare set of talents but rather rests on the commitment to the work of teaching. Like the position of offensive lineman, the profession of teaching is one of service. And more, it is one in which the person's performance can blossom through intense determination. An invitation is offered to serve as an effective teacher.  相似文献   
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