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71.
This article reports on the experiences of two lecturers working at the University of Tasmania required to teach outdoor and sustainability education (O&SE) courses online. Using an (auto)ethonographic case-study approach, the lecturers were interviewed with a view to exploring their perceptions, challenges, ethical dilemmas, tensions, opportunities and experiences in this space. A number of themes emerged, including commitment to quality teaching and learning, the role of experience, and experiential learning, in the online space, the challenge of fostering a connection to place, difficulties faced when trying to develop a learning community, and the role of professional learning and support in terms of pedagogy and technology in the online space. These themes, and their implications for teaching and learning in higher education both generally, and specifically in O&SE, are discussed in light of what is a mounting body of literature exploring the move to online delivery in higher education.  相似文献   
72.
本文分析了基于正区域的决策树生成算法的不足,针对这些不足,提出了基于正区域及其分类纯度的决策树算法。该方法计算简单,易于理解,并用实例说明了该方法的优越性。  相似文献   
73.
对于媒体角色的定位和划分.有些学者根据其与政府的关系,归纳为“喉舌论”、“第四权力论”、“挑战者论”及“双赢论”。文章将侧重从行政决策全过程的视角去考察媒体所扮演的积极角色,预测媒体角色的发展趋势.探讨媒体与决策机构、民众的互动中形成的一种互利共赢的良好局面。  相似文献   
74.
毛力 《海外英语》2011,(10):69-72
Due to the increasing broadband Internet access, VOIP adoption as well as the Web 2.0 concepts, online language learning communities have gained great popularity among adult language learners. Based upon Malcolm Knowles’ adult learning theory, this paper analyzes the innovation that online language learning communities have brought to adult language learning programs. At the same time, the limitations of such programs have been pointed out.  相似文献   
75.
网络舆情是现实民意在网络空间的反映,政府对网络民意的反应事关政府的执政基础和执政能力。文章根据2009年地方政府应对网络舆情能力排行榜的数据,归纳并分析排名高低的原因,总结出一些规律性的经验教训,为政府应对网络舆情提供有效的理论依据,从而形成网络民意与政府工作的良性互动。  相似文献   
76.
学习者元认知作用机制:面授与远程学习之比较   总被引:1,自引:0,他引:1  
本研究重点探讨了面授学习者与远程学习者在元认知作用机制上的差异。首先通过文献研究建立起预设概念模型,分别向面授学习者和远程学习者发放调查问卷,共回收有效问卷424份,然后通过责任教师取得研究被试的课程成绩,使用结构方程模型多群组分析方法比较面授学习者与远程学习者的元认知活动对其学习成绩和学习效能感的作用和影响,最后提出对远程学习者进行元认知支持的策略。  相似文献   
77.
高校网络教育公共服务体系与其他连锁机构的比较分析   总被引:1,自引:0,他引:1  
虽然业界对网络教育公共服务体系(以下简称"公共服务体系")一直存在争议,但全国性、区域性、行业性和虚拟性等多样化、多元化公共服务体系并存发展已成为一种趋势,而且"学习超市"、"数字化学习港"和"学分银联"等隐喻也逐渐被认可.本文基于连锁经营理念,比较分析了公共服务体系与连锁超市、快餐店、网店和网校的经营与管理,探讨了公共服务体系的连锁经营与管理模式.  相似文献   
78.
The rapid development of ICT (information technology and communication) in the last two decades has changed society substantially as a whole. For higher education institutions, the external environment pressure to incorporate ICT in their educational and administrative processes has forced them to invest in resources for infrastructure and training. In addition, teachers have found that they can use technology in their teaching, but lack of full knowledge of how to use it effectively from a pedagogical point of view. The incorporation of new education modalities depends largely on the contextual variables prevailing in the institution and teachers. In UABC (Autonomous University of Baja California), the early days of online education go hack to 1996, so the study period was from 1996 to 2009. An online survey was designed to fmd out the teachers' backgrounds and involvement in online education, their experience as online teachers, and the tools and practices used. Of 97 teachers who were identified with some experience in online teaching, 70% responded to the Survey (68). It was found that the highest percentage (33%) of teachers who responded the survey started teaching online between 2003 and 2006. 56% of teachers have been teaching between one and five online courses. On the other hand, most teachers recognized that 30%-79% of the content of their courses were online based. The most popular learning management system used is moodle followed by blackboard in teachers' preference. In general, teachers expressed using the three main communication tools of online education: forums, chat and e-mail, favoring the use of e-mail. The communication slrategies teachers often use in their courses promoted student-student and student-teacher interaction. In their evaluation strategies, most said that they used self-assessment, rubrics and to a lesser extent online exams and co-evaluation. The results show that most teachers who have been involved in online education in UABC campus have expressed havi  相似文献   
79.
不等式自动发现和判定程序agl2010的若干改进及应用   总被引:2,自引:0,他引:2  
对不等式自动发现和判定程序agl2010进行了若干改进,扩充了程序功能,提高了运算效率;讨论了自动发现不等式过程中的若干技巧和策略;以实例的方式介绍了agl2010程序的应用.  相似文献   
80.
Variable size motion estimation (ME) and disparity estimation (DE) are employed to select the best coding mode for each macroblock (MB) in the current joint multiview video model (JMVM).This technique achieves the highest possible coding efficiency,but it results in extremely large computation complexity which obstructs the multiview video coding (MVC) from practical application.This paper proposes an adaptive early termination of fast mode decision algorithm for MVC.It makes use of the coding information o...  相似文献   
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