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INTRODUCTION Video content will be the main contributor to the future traffic in multimedia applications. Camcorders, digital cameras and lately mobile phones with video capturing capabilities have resulted in a wide spreading of multimedia to the masses. Quality of the captured/rendered videos is likely to be the major determining factor in the success of the new multi- media applications as well as product differentiation. Video processing chain includes video capturing, video pre-proce… 相似文献
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Oyelami Olufemi Moses 《美中教育评论》2008,5(11):22-27
More recent motivational research focuses on the identification of effective techniques for enhancing instructional design and meeting the needs of diverse student populations （Wlodkowski R. J., 1981）. Learning-motivation researchers are applying some of the same theories and concepts found to be effective in industry to the development of motivational models that enhance the teaching-learning environment. One of such models is the Attention Relevance Confidence Satisfaction （ARCS） model of motivational design developed by John M. Keller （Small Ruth V., 2007）. The continuous improvement in handheld devices technologies has led to a new learning paradigm called mobile learning which involves the delivery of learning contents to learners utilizing mobile computing devices. Handheld devices, however, have constraints which limit their use for effective learning. Towards improving the effectiveness of mobile learning is a new mobile learning model proposed by Shih on which instructional designs for mobile learning can be based to facilitate mobile learning design and to achieve better mobile learning outcomes （Yushin E. Shih ＆ Dennis Mills, 2007）. Shih＇s model is based on Graphical User Interface （GUI）. This paper presents an enhanced Shih＇s model for effective mobile learning outcome in a university environment by making provision for instructional design to include online library search for both e-books and audio books using collaborative filtering algorithm to aid the search and posting and reading of testimonials about positive mobile learning outcomes so as to encourage other mobile learners. It also incorporates the use of Voice User Interface （VUI） to access the learning portal in order to overcome mobile devices interface limitations in addition to Graphical User Interface （GUI） proposed by Shih, so as to cater for the learning needs of the blind and the visually impaired. 相似文献
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The present paper concerns itself with a general review and analysis of British mass Media.The first part starts with an introduc tion to the history and development of British mass media.The second part will focus on the analysis of the two major branches in the realm of British Mass media-the Broadcast Media and the Print Media.Thirdly,the British media’s coverage of Beijing Olympics is pre sented to have a better knowledge of the well accepted classification of UK mass media,especially newspapers and television as well as its in fluence. 相似文献
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Mobile agent technology has drawn a tremendous amount of attention from researchers in distributed computing recently as it promises to provied an elegant and efficient way of solving complex distributed problems,as well as offering a new approach to human-computer-interaction.In mobile agent systems,the mobile agent travels autonomously from one computer to another within the agent enabled networks,executes itself in the agent execution environment,collects useful information and makes its own decision on behalf of its owner.This mobility nature of mobile agent demands its unique name in the whole network otherwise it gets lost or conflicts with other mobile agent having same name.This paper proposes a naming scheme which promises a unique name for a mobile agent within that network. 相似文献
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Mobile phone is regarded as"the fifth media"after newspaper,radio,TV and the Internet.The mobile phone short message further highlights the importance of written signs in communication".The thumb revolution"is eagerly anticipating one kind of trend by the hand replace of mouth,sound substitute for the quiet around us.My paper will analyze the language features and the culture features of mobile phone short messages which are written in Chinese and English. 相似文献
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Barry Levinson’s film Wag the Dog(1997) is concerned with the technological transformation of American culture in the postmodernism which is isomorphic with the media culture of American society in the late twentieth century. By exploring three dualities illustrated in the film,this paper aims to show the insecure and uncertain categories of these oppositions under the dominant phenomena of this period: the media,so as to bring about the public’s ability to discern the postmodern world as well as a new ways of thinking and living. 相似文献
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The cis and trans isomers separation of2-butene- 1,4-diol and lafutidine were studied by HPLC on two kinds of chiral columns: (S,S)-Whelk-O 1 and ChiraSpher. The isomers of 2-butene-1,4-diol can be separated on both chiral columns while the isomers of lafutidine can only be resolved on ChiraSpher column. The influence of different type and amount of mobile phase modifier on the isomers separation was extensively studied. The resolution of cis and trans isomers of 2-butene-1,4-diol was 2.61 on (S,S)-Whelk-O 1 column with hexane-ethanol (97:3, v/v) as the mobile phase. The resolution of lafutidine was 1.89 on ChiraSpher column with hexane-ethanol-THF-diethylamine (92:3:5:0.1, v/v/v/v) as the mobile phase. LC-MS methods were developed to identify the isomer peaks. 相似文献
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Efthym los A lepis Maria Virvou 《美中教育评论》2010,7(7):84-92
Mobile computing facilities may provide many assets to the educational process. Mobile technology provides software access from anywhere and at any time, as well as computer equipment independence. The need for time and place independence is even greater for medical instructors and medical students. Medical instructors are usually doctors that have to treat patients on top of their tutoring duties. Mobile features are complementary to web-based features for desktop computers to a high extend in asynchronous e-learning environments. Time and place independence is also a considerable potential for medical students with overloaded educational duties. This paper examines the degree of the usefulness of mobile facilities for medical instructors who wish to author and manage their courses by using a mobile authoring tool. Furthermore, this paper investigates how acceptable and useful the mobile features of an e-learning system have been to medical students who have used the system, in comparison with the use of the system through a desktop computer. In addition, it investigates usability issues. 相似文献
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Okopi Onjefu Fidel 《美中教育评论》2010,(2):76-82,100
The whole world is now referred to as a global village because of the technological revolution is taking place especially in the area of information and communication. In this paper, the author started the discussion with definition of communication, highlighted means of communication and purposes of communication, counselling as a form of communication, conceptual flame work for communication in ODL （open and distance education）, component of good communication, media selection and combination for effective counselling process in NOUN. The author in his recommendations, advocated that for a counsellor to be effective in discharging his responsibilities, he or she must attain a certain level of competency in communication skills, select appropriate media, and must be efficient in the use of communication devices especially computer. Also the media of counselling must be readily available to both the counsellor and counselees. 相似文献
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《开放教育研究》1995,(1)
Beginning with an.alyzing the status quo,characteristics,and existing problemsof open education of t3hanghal Television University（STVU）,based on the generalgoalofshanghal economic and social development as well as the cases ofoverseasopen unlversltles;this paper sets the aim ofshanghal’s open education reform anddeveloPment and theD口司or measures to be taken。 The chosen aim,to improve STVU to be a irst。class Open University throughoutthe country by the en（lofthls century or at the beginning ofnext century,has thefollowing features: l.Highly opened education.The open policy of Investigating qualltlcatlon andadmitting without examination Is implemented,that Is,open admission and severegraduation. n.Education.ofquallty、Withperfectquallty assurance system and strictexamination rules,its quality will be evaluated and accredited by authoritativeiSStltlt100S. m.High tech In education.Sel尽developed teachingmaterlals are associated withoptimized multi,media.Interactive mode of Instrt见ctlon Is generally 相似文献
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简述了多媒体教室无线话筒的基本要求和无线数字音频芯片nRF2421的基本特性。以此芯片为主体实现了符合多媒体教室要求的无线话筒发射端和接收端的硬件设计，分析了数字音频流的传输特性及射频发送接收控制流程。最后就此芯片低功耗低成本的原因说明用在多媒体教室无线话筒设计中的优越性。 相似文献
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庄越挺 《浙江大学学报(A卷英文版)》2005,6(11):1201-1203
INTRODUCTION One of the greatest attractions of a digital library is its multimedia resources humans can use for informa- tion retrieval to knowledge discovery and information integration. A problem of multimedia researchers is to find a so-called killer-Apps which can demonstrate well the potentials of research topics such as video sum- marization, semantic annotation, multimedia cross indexing and retrieval, etc. Deeper research and wider ap- plications of digital libraries revealed the… 相似文献
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Pablo García Ansola Andrés García Javier de las Morenas Javier García Escribano Francisco Javier Otamendi 《浙江大学学报(A卷英文版)》2011,12(11):849-859
The objective of this work is to provide decision-making processes with an updated/real picture of the mobile resources in
industrial environments through a constant feedback of information. The combination of identification technologies and wireless
sensor networks (WSN) is proposed as a key development to guarantee an accurate and timely supply of online information regarding
the localization and tracking of the mobile wireless devices. This approach uses a cooperative and distributed localization
system, called ZigID, which is a WSN based on a Zigbee network with radio frequency identification (RFID) active tags as end
nodes. The WSN can recover not only the ID information stored at the tags attached to mobile resources, but also any other
useful data captured by specific sensors for acceleration, temperature, humidity and fuel status. This paper also shows the
development of ZigID, including devices and information flows, as well as its implementation in ground handling operations
at the Ciudad Real Central Airport, Spain. 相似文献
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INTRODUCTION The objective of the China-America Digital Academic Library Project (CADAL) is to provide universal access to one million digital books and multimedia resources for teaching and research, and explore the ways of applying multimedia and virtual reality technologies to digital library. Terabyte volume of multimedia data of various types of modality, such as text, image, video, anima- tion, are available in the CADAL, which is one of the distinct characteristic of CADAL. … 相似文献
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阐述了楚国历史文化遗产数字化的关键技术和计算机技术在文化遗产数字化中的应用,提出了武当文化数字化平台技术构建的一般方法,并就多媒体数据库、存储、检索和网络发布技术等进行了探讨。 相似文献
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随着第三代数字无线移动通信网络以及多媒体信息服务的迅猛发展,3G视频通信的高可用性已成为业界关注的一个新的焦点。本文着重论述将3G视频技术应用于新闻直播的可行性,描述3G视频直播系统的构建和技术特征．探讨不同制式下的3G运营网络对3G视频直播设备使用的影响和技术应对措施。 相似文献
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李小清 《安顺师范高等专科学校学报》2014,(5):132-133
随着3G网络技术的不断发展,网络覆盖面积越来越广,已经突破了传统2G网络技术下手机数字图书馆的服务限制,依靠智能手机等良好的终端设备,我国手机数字图书馆的服务已经由传统的短信服务和WAP服务模式向基于3G技术的创新服务模式转变。 相似文献