信息检索中快速索引文件的设计研究     

王长青 《佳木斯教育学院学报》2011,(2):427+429-427,429

索引文件是检索效率的关键,本文首先针对索引文件的流程进行了设计,然后分析了索引文件的建立和存储设计,并进一步研究了索引文件的合作与优化设计。希望本文的研究能为检索系统中的索引文件研究提供一定的参考借鉴作用。  相似文献   

基于ARM的视频监控系统的设计与实现     

曹连江 《南昌教育学院学报》2011,26(2):185-186

基于ARM提出了一种便携式视频监控系统设计方案。该系统以ARM为处理器,通过嵌入式Linux采集USB摄像头视频数据,并将采集的视频数据帧经MPEG-4压缩后通过USB接口保存到闪存设备中。测试结果表明,该系统具有高效、稳定和方便等特点。  相似文献   

教学视频案例与师范生语文教学技能的培养——以小学教育专业本科为例     

韦芳 《遵义师范学院学报》2011,13(5):83-86

教学视频案例在师范生习得、积累实践性知识和培养其从教的技能中发挥积极作用。文章从对传统师范生教学技能培养方式的反思、案例视频对师范生教学技能的价值、案例视频的开发与运用进行分析,强调了教学案例视频是促进师范生教学技能的重要途径。  相似文献   

现代信息技术环境下的“数字视频”新概念     

杨建平 《现代教育技术》2007,17(8):75-78

在现代信息技术环境下,"数字视频"的踪影无处不在。但是,人们对数字视频这一概念还存在有较为模糊的认识,甚至是混淆和缺失的认识。基于这一点,笔者认为有必要对现代信息技术环境下的"数字视频"给出一个更能准确表达这一概念的定义和分类,并充实其概念内涵,借以方便对大众的现代信息技术教育和各行各业的使用、交流以及相关基础理论的研究。  相似文献   

主席控制模式下视频会议系统分会场的施工实践     

张留宛 《中国教育技术装备》2011,(36)

视频会议是近年来伴随着信息技术的迅猛发展而兴起的一种新的多媒体通信方式。建设主席控制模式下的视频会议系统分会场,要进行分会场的位置选择、影响参数分析和设计,以及合理地布局和安装视频会议系统设备等实践。  相似文献   

影视多媒体实验教学对大学生媒介素养的影响     

梁柏榉 《中国现代教育装备》2011,(11):109-111

影视媒介素养教育是媒介素养教育的重要组成部分,通过影视多媒体实验教学对大学生进行媒介素养教育是一项新的举措。在影视多媒体实验教学中,指导教师把影视原理,影视设备的使用,影视作品的构思、拍摄、制作方法和技巧传授给学生的同时,也把影视媒介素养教育的内容传授给学生。通过这一途径提高了学生对影视作品的选择能力、理解能力、评鉴能力和创造能力。  相似文献   

Encouraging Knowledge Transfer in Food Science and Nutrition Education: Suggestions from Cognitive Research     

Megan A. Sumeracki  Yana Weinstein-Jones  Cynthia L. Nebel  Shelly J. Schmidt 《Journal of Food Science Education》2019,18(3):59-66

For several decades, cognitive psychologists have been studying how we learn, and from this work it becomes possible to identify ways to help students learn in the classroom effectively. Importantly, this work does not just inform how to memorize facts, but also how to learn complex material in a way that allows students to apply what they are learning in future situations. The laboratory to classroom model used by many researchers to apply cognitive psychology to real educational situations, such as classroom learning and students’ independent studying, is described first. Then the focus turns to important issues within education, such as students’ ability to transfer knowledge to new situations and understand complex material. Finally, three learning strategies are discussed (concrete examples, elaborative interrogation, and retrieval practice) that instructors can implement to help students to both acquire knowledge and apply it to new situations, integrating examples from food science and nutrition.  相似文献   

安徽省高校图书馆发展的现状、问题与对策——基于图书馆一站式检索的调查     

丁正祁  张峰 《阜阳师范学院学报(社会科学版)》2015,(2)

文章通过对安徽省29所普通本科院校图书馆的一站式检索平台建设现状进行调查,分析存在的问题,并对进一步完善图书馆一站式检索服务提出一些建设性意见。  相似文献   

高校微课教学的微视频开发思路研究     

肖立章  罗瑾 《佳木斯教育学院学报》2015,(6)

随着2013年全国高校微课比赛的开展,微课作为一种以微视频为载体的教学资源在各个高校开展,同时视频制作还有利于提高教学内容的传播效果。微课的建设对于提高高校的教学能力和课程建设能力,另外,还对高校教学模式和教学理念的创新有一定的促进作用,同时有利于推进数字化教学的开展和共建共享工作的推进。本文将通过对高校微课教学的概述以及对高校微课微视频存在的问题的分析研究,探究高校微课教学的微视频的开发思路。  相似文献   

Probabilistic topic modeling in multilingual settings: An overview of its methodology and applications     

Ivan Vulić  Wim De Smet  Jie Tang  Marie-Francine Moens 《Information processing & management》2015

Probabilistic topic models are unsupervised generative models which model document content as a two-step generation process, that is, documents are observed as mixtures of latent concepts or topics, while topics are probability distributions over vocabulary words. Recently, a significant research effort has been invested into transferring the probabilistic topic modeling concept from monolingual to multilingual settings. Novel topic models have been designed to work with parallel and comparable texts. We define multilingual probabilistic topic modeling (MuPTM) and present the first full overview of the current research, methodology, advantages and limitations in MuPTM. As a representative example, we choose a natural extension of the omnipresent LDA model to multilingual settings called bilingual LDA (BiLDA). We provide a thorough overview of this representative multilingual model from its high-level modeling assumptions down to its mathematical foundations. We demonstrate how to use the data representation by means of output sets of (i) per-topic word distributions and (ii) per-document topic distributions coming from a multilingual probabilistic topic model in various real-life cross-lingual tasks involving different languages, without any external language pair dependent translation resource: (1) cross-lingual event-centered news clustering, (2) cross-lingual document classification, (3) cross-lingual semantic similarity, and (4) cross-lingual information retrieval. We also briefly review several other applications present in the relevant literature, and introduce and illustrate two related modeling concepts: topic smoothing and topic pruning. In summary, this article encompasses the current research in multilingual probabilistic topic modeling. By presenting a series of potential applications, we reveal the importance of the language-independent and language pair independent data representations by means of MuPTM. We provide clear directions for future research in the field by providing a systematic overview of how to link and transfer aspect knowledge across corpora written in different languages via the shared space of latent cross-lingual topics, that is, how to effectively employ learned per-topic word distributions and per-document topic distributions of any multilingual probabilistic topic model in various cross-lingual applications.  相似文献