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1.
音频与文本同步是设计开发数字语音教室的一个关键问题。通过对多媒体同步方法的研究，结合基于嵌入式技术的数字语音教室的实际情况，提出了一种新的应用于数字语音教室的音频与文本同步的方法。 相似文献
2.
广播电视声像档案有其独特性、珍贵性和多样性,在现代信息技术的助推下,应充分利用数字化信息平台实现资源共享,深度挖掘广播电视声像档案的价值,充分发挥其社会效益与经济效益,使之成为广播电视媒体重要的核心战略资源,成为广播电视媒体固定资产的组成部分。 相似文献
3.
基于射频识别技术的自动化立体仓库构建 总被引：2，自引：0，他引：2
射频识别技术作为一种新兴的自动识别技术，在国内外广泛应用。自动化立体仓库在医药、电子、汽车、机械、化工等行业应用产生了巨大的社会效益和经济效益。本文通过分析射频技术的特点，自动化立体仓库的组成,提出了基于射频技术的自动,化立体仓库的构建策略和实现方法。 相似文献
4.
开放大学是通过广播电视及适合高等教育的技术手段,向学生提供符合大学与专业标准的教育的一种大学。我国的广播电视大学正是这样的学校。要办好开放大学,必须得办好广播电视大学。要办好广播电视大学首当其冲的就是赋予广播电视大学本科以上独立的办学自主权。当然,办好广播电视大学不等于就办好了开放大学,因为我国还有其他形式的开放大学,但是,如果广播电视大学没有办好,办好开放大学肯定无从谈起。 相似文献
5.
An animated concept map is a presentation of a network diagram in which nodes and links are sequentially added or modified. An experiment compared learning from animated concept maps and text by randomly assigning 133 undergraduates to study 1 of 4 narrated animations presenting semantically equivalent information accompanied by identical audio narration. Two of the animations presented text; one with concurrent audio and another with delayed audio. Two of the animations presented concept maps; one in black and white and the other with nodes colored to represent semantic relatedness. The concept map groups outperformed the text groups on free recall (p < .05). The black-and-white concept map group outperformed the text groups on a multiple-choice knowledge test (p < .05). No advantages were statistically detected for color enhancements of the animated map. The results indicate that verbal information can be effectively communicated by learner-paced animated concept maps accompanied by audio narrations. 相似文献
6.
张波 《连云港职业技术学院学报》2012,25(4):62-65
高校广播电台作为重要的思想舆论阵地和信息传播渠道,以其特有的舆论导向、服务监督和育人功能,在高等学校的建设和发展尤其是校园文化的建设中发挥着不可忽视的作用.文章采用实证分析法,以连云港职业技术学院为例,从校园文化的视角,阐述了高校广播电台的重要性,分析了学校广播电台的现状,并围绕为校园文化建设服务,提出了高校广播电台建设和发展的途径. 相似文献
7.
邹海明 《湖州职业技术学院学报》2013,(1):65-68
地市级、县级电大是中央广播电视大学系统基层的办学单位,是电大开放教育的主力军,也是实现广播电视大学到开放大学转型升级的根本保障。没有生源,电大开放教育就成了无源之水,无本之木。生源是基层电大赖以生存和发展的基础,文章立足于基层电大开放教育招生的实际,分析了基层电大开放教育招生中存在的问题,针对性地提出了创新基层电大开放教育招生的对策。 相似文献
8.
利用VB开发CAI课件 总被引：1，自引：0，他引：1
黄荣梅 《宁波职业技术学院学报》2005,9(5):55-57
利用VB编写多媒体课件,主要解决动画、声音、图片、文本的显示、播放与控制等问题,介绍了一些有关的编程技巧和关键技术. 相似文献
9.
What type of display helps students learn the most and why? This study investigated how displays differing in terms of signaling,
extraction, and localization impact learning. In Experiment 1, 72 students were assigned randomly to one cell of a 4 × 2 design.
Students studied a standard text, a text with key ideas extracted, an outline that localized ideas topically, and a matrix
that localized ideas topically and categorically. One version of the displays signaled the displays’ organization and one
version did not. The matrix display proved best for facilitating fact and relationship learning because of its ability to
localize related information within topics and categories. Simply signaling or extracting text ideas was not helpful. Experiment
2 demonstrated that not all matrices are created equal because they can vary in terms of how information is localized. About
54 students were assigned randomly to one cell of a 2 × 2 design that varied localization of matrix topics and categories.
Students studied matrices high or low in topical organization and high or low in categorical organization. Results confirmed
that a high, natural ordering of matrix topics is necessary to highlight relationships and bolster relationship and fact learning. 相似文献
10.
赵开 《沈阳教育学院学报》2011,13(2):86-87
根据八式太极拳运动教学任务,从文本、图像、动画、音频、视频等素材的采集方法,以及各种素材的合成与调试过程角度,介绍八式太极拳教学多媒体（CAI）课件的制作过程。并指出该课件可以提高学生兴趣、提高教学质量。 相似文献
11.
Four experiments were conducted to investigate the role of map spatiality and icon mimeticism in facilitating text recall. A secondary goal was to explore an assumption of the conjoint retention hypothesis, that the visuospatial component of working memory is involved in retrieving map information. We manipulated display conditions to evaluate the separate and combined effects of map spatiality and icon mimeticism on text recall. We also utilized a concurrent task paradigm to assess both the recognition of spatial displays and the recall of map feature information. The results of all four experiments point to the mimeticism of icons as the key attribute of maps for facilitating recall, rather than the spatial layout of the map when visual displays and text are presented simultaneously during encoding. We also found no evidence indicating that maps are processed in a more spatial manner than are lists. Copyright 2000 Academic Press. 相似文献
12.
研究一种基于STC12C5A60S2增强型单片机作为主控芯片的光立方音频谱显示方案。以STC单片机为核心,以74HC573为锁存器,采用与点阵相同的动态扫描驱动显示原理,实现LED的光立方显示。同时利用音频输入,结合FFT算法,实现音频谱的光立方显示,给人以良好的视觉和听觉感受。 相似文献
13.
现代远程开放教育人才培养模式改革的探索与实践 总被引：1，自引：0，他引：1
文章分析了现代远程开放教育人才培养模式的基本特征．并根据这一特征和人才培养模式诸要素总体要求．提出了广播电视大学现代远程开放教育人才培养模式的基本框架。在人才培养模式基本框架的基础上．系统地阐述了其有浙江电大特色的“五要素”人才培养模式的实践模型及其相应的教学模式、教学管理模式和运行机制。 相似文献
14.
首先介绍了多媒体通信中的流同步问题以及影响同步的各种因素，然后提出一种基于播放时间的自适应同步算法并加以推导证明，最后介绍了它在已设计的语音传输系统中的具体实现。 相似文献
15.
本介绍了微型调频发射机的一种制作方法及其工作原理。在微型发射机中，话筒将话音转化为音频信号，音频信号经放大后对载波进行调制，产生调频波，通过天线向外发射调频电磁波。用调频收音机便可以接听到清楚的话音。 相似文献
16.
石芸 《湖北广播电视大学学报》2007,27(6):13-14
县级电大是整个电大系统的基础,在改革大潮的冲击下,县级电大遇到了严竣的生存危机。本文试图从县级电大自身职能定位的缺失与错位上解读这一现象的成因。同时,在冷静客观地分析县级电大生存环境的基础上,认清县级电大的优势,提出县级电大职能定位“多元化”的设想。 相似文献
17.
We examined whether making cause and effect relationships explicit with an adjunct display improves different facets of text
comprehension compared to a text only condition. In two experiments, participants read a text and then either studied a causal
diagram, studied a list, or reread the text. In both experiments, readers who studied the adjunct displays better recalled
the steps in the causal sequences, answered more problem-solving transfer items correctly, and answered more questions about
transitive relationships between causes and effects correctly than those who reread the text. These findings supported the
causal explication hypothesis, which states that adjunct displays improve comprehension of causal relationships by explicitly
representing a text’s causal structure, which helps the reader better comprehend causal relationships. 相似文献
18.
浅析智能标签的发展与应用 总被引：3，自引：0，他引：3
季慎有 《湖南科技学院学报》2005,26(8):52-54
智能标签以无线射频方式进行非接触的自动识别和数据传送,是未来应用前景最广阔的射频识别产品。它通常由读写器、RFID卡及相关天线构成,具有系列优点和广阔的国际背景,在商业企业、物流管理、电子票证等领域得以广泛应用．只要解决好编码体系多样性、成本相对过高、应用环境和解决方案不够成熟等制约因素,智能标签在我国企业信息化过程中必将发挥更大作用。 相似文献
19.
《Paedagogica Historica: International Journal of the History of Education》2012,48(1-2):211-222
The use of radio for educational purposes in high schools expanded considerably between 1920 and 1970. Education scholars generally qualify radio for schools as a failure. This conclusion is based on the accessibility of radio sets in schools, the interest of teachers in radio for schools, and the budgets allocated for the purchase of radio sets. A wider investigation shows that educational radio resulted from collaboration among school personnel, radio broadcasters and the political authorities. We agree with communication scholars that using a means of communication for educational purposes involves many spheres of society. An examination of the origins, development and decline of radio broadcasting for schools also reveals that this was a technical substitution phenomenon; one means of communication was replaced by another. The use of radio in schools gradually declined, following the introduction of television in schools during the 1960s. Taking all these aspects into account, our study identifies the social mechanisms whereby radio was used for teaching in high schools. This clearly illustrates on a more general level the change in use of audiovisual tools in schools. The Montreal Catholic School Board (CECM) — the largest French‐language school board in Canada — is an institution of particular interest for the study of radio broadcasting for schools. Because of it size, the CECM had sufficient resources and personnel to be a pioneer in education. From 1931, CECM personnel went on the air on CKAC radio to popularize instruction in music, literature and language. Members of Montreal's educational community, parents and students alike, and listeners interested in learning, began to view radio as a means of conveying knowledge. In 1936, Société Radio‐Canada (SRC), the French‐language section of the Canadian Broadcasting Corporation, appeared on the Quebec radio scene, and educational radio gradually became more clearly defined. The programs that were aired, of which the best known was Radio‐Collège, gave the green light to educational radio in francophone Quebec. Before emulating SRC initiatives, the CECM used radio as a tool for social communication. In the early 1950s, the school board used radio mainly as a forum for explaining educational issues to the public; for example, teachers' salary negotiations. From autumn 1950, the CECM School and Family Committee aired a series of ten programs about the role of the school in society. Post‐war Montreal society was in a state of flux. Urbanisation and the emergence of mass communication and consumption were transforming the entire social structure. The francophone elite was starting to question traditional values taught by the Church, and religious practice was declining. Reacting to these new realities, the CECM appealed to parents for their help to ensure that together, family and school would succeed in the task of educating children. The board also used CKAC to discuss the shortage of schools. When parents demanded schools for their children, speakers from the School and Family Committee explained how the problem would be solved. As these examples show, Montreal schools initially made use of radio for social communication. In 1954, following the third congress on the French language in Canada (Troisième congrès de la langue française au Canada), the CECM devised a wide‐ranging campaign to improve the spoken language of students. This was the beginning of educational radio. With the help of executives at CKAC radio, the board created school broadcasting designed to improve everyday language in students from grades 1 to 12. After the first series of programs proved a success, the board repeated the project the following year, broadcasting twice as many lessons. The glory years of Améliorons notre langue parlée would follow, with the series airing continuously from 1954 to 1963. As a result of this enduring venture, the government extended teaching by radio to other school boards across the province of Quebec. This marked the institutionalization of school radio broadcasting. Transistor radios, the democratisation of high school teaching and active pedagogy were all elements that boosted the use of radio in schools. Radio was now present in every classroom, but television was also being introduced. Radio had earned pride of place but was gradually superseded by television. The range of academic subjects widened, and the numbers of hours set aside for television broadcasting increased. Meanwhile, the use of school radio broadcasts gradually diminished. We therefore attribute the decline in radio broadcasting for schools to the emergence of television for schools, in other words, a phenomenon of technical substitution. Finally, our research shows that the contribution by social agents incidental to schools and the influence of various factors external to schools are of major importance in explaining the mechanisms whereby educational radio became part of school life. It shows that radio changed in status from a public communication tool in the 1930s, to a pedagogic tool supporting the teaching of French twenty years later. Our study also shows that radio for schools was created not only by school‐related actors and institutions but also by the mass media and government. Far from being a failure, as education scholars maintain, educational radio was a success, but was replaced by television in the late 1960s. 相似文献
20.
介绍了LED显示技术原理及发展概况,说明了LED在电视演播室中应用的重要意义和作用,阐述了LED照明设备绿色节能、光效高、辐射热量少、色温可调等特点,并举例说明了LED在电视演播室及舞台晚会中的应用。 相似文献