要正确认识电化教育     

孙中华 《通化师范学院学报》2002,23(2):112-114

本对电化教育的作用，教师教育观念的转变，以及由此教育的发展等三方面谈了自己的几点看法。  相似文献   

复合图书馆参考咨询的工作模式   总被引：10，自引：1，他引：9  

施强 《图书馆学研究》2003,(11):59-62

网络技术的发展，使复合图书馆参考咨询业务活动的内容、方式和手段与传统图书馆相比有很多变化，参考咨询工作不仅有帮助、协助和引导读者利用文献资源，而且还具有组织、筛选、查新和提供文献资源等特点，因而提出复合图书馆参考咨询应围绕完善一个技术条件、加强二个方面基础业务工作和深化五个方面基本条件的工作模式。  相似文献   

无功补偿技术在低压电网中的应用     

董超强 《中国科技信息》2007,(13):24-25,28

无功功率补偿是保持电网高质量运行、降低电网损耗的一种主要手段,也是当今电气自动化技术及电力系统研究领域所面临的一个重大课题,正在受到越来越多的关注。本文从无功补偿的合理配置原则出发,着重论述了低压电网和异步电动机无功补偿的方法及补偿容量的选择方法。  相似文献   

地区电力长期负荷预测方法研究     

施伟  刘建辉 《中国科技信息》2006,(23):23-24

负荷预测对电力系统规划和运行极其重要,本文论述了电力负荷预测与分类、负荷预测的基本过程。同时本文采用外推预测技术、单耗法和新兴交叉学科人工免疫预测法对阜新地区电力负荷进行长期的预测,并对实际预测结果进行了分析、比较。得出结论:这三种方法都适合于对地区电力负荷进行长期的预测,取三种方法预测的中间值可以得到相对精确的预测结果。  相似文献   

机非混行交通流诱导系统延误模型的研究     

蒲云  郑雪 《科技通报》2001,17(2):11-16

在城市道路交通网络中，延误是确定路段行程时间的一个主要因素，结合我国国情，在进行交通诱导研究中提出了一种延误模型设计思想，并在模型中反映出非机动车对机动车的影响，从而得到了同一进路不同前进方向决定的行程时间函数。  相似文献   

论复合理图书馆     

庞亚娟 《现代情报》2006,26(1):48-50

探讨了复合型图书馆的概念和产生必须具备的条件，对复合型图书馆载体形态的混合，馆藏结构的混合（现实馆藏与虚拟馆藏）进行了阐述．提出了传统的图书馆业务机构设置已经不能适应网络化、数字化建设的需要，对业务部门进行重组已成为复合图书馆管理体制改革的重要内容。  相似文献   

Surveillance,Privacy and the Ethics of Vehicle Safety Communication Technologies     

M.?ZimmerEmail author 《Ethics and Information Technology》2005,7(4):201-210

Recent advances in wireless technologies have led to the development of intelligent, in-vehicle safety applications designed to share information about the actions of nearby vehicles, potential road hazards, and ultimately predict dangerous scenarios or imminent collisions. These vehicle safety communication (VSC) technologies rely on the creation of autonomous, self-organizing, wireless communication networks connecting vehicles with roadside infrastructure and with each other. As the technical standards and communication protocols for VSC technologies are still being developed, certain ethical implications of these new information technologies emerge: Coupled with the predicted safety benefits of VSC applications is a potential rise in the ability to surveil a driver engaging in her everyday activities on the public roads. This paper will explore how the introduction of VSC technologies might disrupt the “contextual integrity” of personal information flows in the context of highway travel and threaten one’s “privacy in public.” Since VSC technologies and their related protocols and standards are still in the developmental stage, the paper will conclude by revealing how close attention to the ethical implications of the remaining design decisions can inform and guide designers of VSC technologies to create innovate safety applications that increase public safety, but without compromising the value of one’s privacy in public. This work was supported by the National Science Foundation PORTIA Grant No. CNS-0331542, and could not have been completed without the valuable guidance of Prof. Helen Nissenbaum (New York University) and Prof. Dan Boneh (Stanford University). I am grateful to many other colleagues who generously contributed to this work with excellent comments and suggestions, including Emily Clark and Steve Tengler at the VSCC, and Sam Howard-Spink, Joseph Reagle and Tim Weber at New York University. Drafts were further sharpened through opportunities to present at colloquia and conferences sponsored by New York University’s Department of Culture & Communication, the American Association for the Advancement of Science, the Society for Philosophy and Technology, and Computer Ethics: Philosophical Enquiry.  相似文献   

Understanding complex ecologies: an investigation of student experiences in adventure learning programs     

Suzan Koseoglu  Aaron Doering 《Distance Education》2011,32(3):339-355

The GoNorth! Adventure Learning (AL) Series delivered educational programs about global climate change and sustainability from 2006 to 2010 via a hybrid-learning environment that included a curriculum designed with activities that worked in conjunction with the travels of Team GoNorth! as they dog sledded throughout the circumpolar Arctic. This study addresses a gap in the AL literature by identifying factors that lead to high levels of student engagement and reveals strategies for instructional designers and educators on how to design emotionally engaging online learning environments. A mixed methods study was conducted to explore patterns of learner engagement in relation to two AL programs: GoNorth! Fennoscandia 2008 and GoNorth! Nunavut 2009. Survey data were drawn from a total of 101 students in 2008 and 2009.  相似文献   

稀土Sm掺杂PLA／TiO2杂化材料的制备及抗凝血性能测定     

魏征  张艳 《安徽教育学院学报》2011,(6):70-72

以乳酸为原料、辛酸亚锡为催化剂制备聚乳酸（PLA）;以PI。A、Sm、钛酸四正丁酯（TBT）为原料,采用溶胶凝胶法制备稀土Sm掺杂PLA／TiO2有机无机杂化材料。XPS分析结果显示了Sm的加入。动态凝血时间测定法测定结果表明。Sm的掺杂提高了PLA／TiO2的抗凝血能力,并且在加入量为wt0．6％时效果最佳。  相似文献   

电工电子与自动化技术高职教育实训基地建设研究   总被引：1，自引：0，他引：1  

何新凤  曾柳娟  韦永森  黄平  王艳玲 《桂林师范高等专科学校学报》2011,25(2):155-159

加强实训基地建设是办好高等职业教育的关键之一。电工电子与自动化技术高职教育实训基地是培养电子信息工程技术、应用电子技术、电子控制自动化等专业学生实践能力和职业能力的重要场所。对电工电子与自动化技术高职教育实训基地建设的必要性和作用进行了研究,提出了实训基地建设的目标、指导原则和建设内容。  相似文献