Pull-based P2P live streaming is a promising solution for the large scale streaming systems, like PPStream, PPlive, due to its high scalability, low cost and high resilience. However, they usually suffer from bad dela...Pull-based P2P live streaming is a promising solution for the large scale streaming systems, like PPStream, PPlive, due to its high scalability, low cost and high resilience. However, they usually suffer from bad delay performance. In this paper, we seek to improve the delay performance under ensuring video display quality stemming from chunk scheduling. And so we model Pull-based chunk scheduling problem as a multi-objective optimization problem to minimize the video delay and maximize video display quality in the environment of heterogeneous upload bandwidths, heterogeneous and dynamic propagation delays. Finally we put up with a greedy Pull-based scheduling approach(GPSA) to solve the optimization problem. The evaluation shows GPSA can outperform two classical chunk scheduling approaches and adapt to dynamic variance of propagation delays.展开更多
With this article we aim to propose an analytical alternative to what we could call the substitution and condemnation of the spectator as an element of the new technological apparatuses. Actually, what we see in many ...With this article we aim to propose an analytical alternative to what we could call the substitution and condemnation of the spectator as an element of the new technological apparatuses. Actually, what we see in many of the current reflections on new media is that while the spectator is being accused of ultimate passivity, he is also being mobilized to emancipated action as an empowered user. Through the critique of an online application available on Portuguese Radio Television （RTP）＇s website, the state-owned television network, called 0 Meu Telejornal1, we will try to demonstrate that we actually need to develop a spectator theory to critically understand the political position of the citizen within our changing contemporary media environment.展开更多
This paper discusses the idea that the industry can have a differentiator of program quality by encouraging the activities of the Broadcasting Ethics ＆ Program Improvement Organization （BPO） in Japan. The BPO, a wo...This paper discusses the idea that the industry can have a differentiator of program quality by encouraging the activities of the Broadcasting Ethics ＆ Program Improvement Organization （BPO） in Japan. The BPO, a worldwide independent organization, has a mission of a breakwater against state power, and thus can be regarded as a kind of media accountability system, as proposed by Claude-Jean Bertrand. We review some controversial affairs in the TV industry and discuss BPO＇s activities aimed preventing ＂yellow journalism＂ and improving the quality of programming. High-quality content may be a differentiator for viewers faced with a choice of media, and thus, we focus on BPO and its role as a differentiator of the Japanese TV industry among the other, especially, Internet media. We also propose four ideas in response of critiques of BPO. Those are to strengthen transparency of governance of BPO, to improve the conformity of the TV industry to BPO＇s assessments of it, to establish a new committee to examine the whole concept of journalism, and to introduce a new certification institution to guarantee quality.展开更多
Micro-film is a product from the development of mobile media technology based on the network media, and the short and typical screen expression ability and effect are its forms of contents. Different from the communic...Micro-film is a product from the development of mobile media technology based on the network media, and the short and typical screen expression ability and effect are its forms of contents. Different from the communication way of traditional advertising, micro-film advertising has the characteristics of both social networking and video communication. With the creative characteristics of micro-film advertising, the conamunication way of video advertising has been started. In this paper, through the introduction to the advantages of micro-film advertising communication and combining with the development of micro-film in the new period, the application of aesthetic ideas to micro-film advertising is further explored, and then the striking expression effect caused by micro-film advertising is introduced.展开更多
In this paper, we conduct research on the development direction of traditional broadcast television movie media under background of new media and lnternet. In recent years, with the computer technology network communi...In this paper, we conduct research on the development direction of traditional broadcast television movie media under background of new media and lnternet. In recent years, with the computer technology network communication technology and constant innovation rapid development of digital technology, digital new media got rapid development. Under the digital new media industry has gradually become the core industry of 21 st century knowledge economy and the new economic growth point. But there are still some problems in the digital of new media development. How to treat these problems to take effective countermeasures is vital to healthy development of the new media. Our research proposes corresponding guidance and the perspective on the development orientation which acts as the paradigm and the guideline.展开更多
This paper explores the advantages of multimedia and network-based language teaching over traditional approaches and those of New Horizon College English over traditional textbooks and puts forward several suggestions...This paper explores the advantages of multimedia and network-based language teaching over traditional approaches and those of New Horizon College English over traditional textbooks and puts forward several suggestions on how to use multimedia and network technology to reform college English teaching in the teaching of New Horizon College English.展开更多
基金supported by National Key Basic Research Program of China(973 Program)(2009CB320504)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 60821001)+1 种基金Beijing Municipal Commission of Education to build the project special,Research Fund for the Doctoral Program of Higher Education of China (20090005120012)National Natural Science Foundation (60672121)
文摘Pull-based P2P live streaming is a promising solution for the large scale streaming systems, like PPStream, PPlive, due to its high scalability, low cost and high resilience. However, they usually suffer from bad delay performance. In this paper, we seek to improve the delay performance under ensuring video display quality stemming from chunk scheduling. And so we model Pull-based chunk scheduling problem as a multi-objective optimization problem to minimize the video delay and maximize video display quality in the environment of heterogeneous upload bandwidths, heterogeneous and dynamic propagation delays. Finally we put up with a greedy Pull-based scheduling approach(GPSA) to solve the optimization problem. The evaluation shows GPSA can outperform two classical chunk scheduling approaches and adapt to dynamic variance of propagation delays.
文摘With this article we aim to propose an analytical alternative to what we could call the substitution and condemnation of the spectator as an element of the new technological apparatuses. Actually, what we see in many of the current reflections on new media is that while the spectator is being accused of ultimate passivity, he is also being mobilized to emancipated action as an empowered user. Through the critique of an online application available on Portuguese Radio Television （RTP）＇s website, the state-owned television network, called 0 Meu Telejornal1, we will try to demonstrate that we actually need to develop a spectator theory to critically understand the political position of the citizen within our changing contemporary media environment.
文摘This paper discusses the idea that the industry can have a differentiator of program quality by encouraging the activities of the Broadcasting Ethics ＆ Program Improvement Organization （BPO） in Japan. The BPO, a worldwide independent organization, has a mission of a breakwater against state power, and thus can be regarded as a kind of media accountability system, as proposed by Claude-Jean Bertrand. We review some controversial affairs in the TV industry and discuss BPO＇s activities aimed preventing ＂yellow journalism＂ and improving the quality of programming. High-quality content may be a differentiator for viewers faced with a choice of media, and thus, we focus on BPO and its role as a differentiator of the Japanese TV industry among the other, especially, Internet media. We also propose four ideas in response of critiques of BPO. Those are to strengthen transparency of governance of BPO, to improve the conformity of the TV industry to BPO＇s assessments of it, to establish a new committee to examine the whole concept of journalism, and to introduce a new certification institution to guarantee quality.
文摘Micro-film is a product from the development of mobile media technology based on the network media, and the short and typical screen expression ability and effect are its forms of contents. Different from the communication way of traditional advertising, micro-film advertising has the characteristics of both social networking and video communication. With the creative characteristics of micro-film advertising, the conamunication way of video advertising has been started. In this paper, through the introduction to the advantages of micro-film advertising communication and combining with the development of micro-film in the new period, the application of aesthetic ideas to micro-film advertising is further explored, and then the striking expression effect caused by micro-film advertising is introduced.
文摘In this paper, we conduct research on the development direction of traditional broadcast television movie media under background of new media and lnternet. In recent years, with the computer technology network communication technology and constant innovation rapid development of digital technology, digital new media got rapid development. Under the digital new media industry has gradually become the core industry of 21 st century knowledge economy and the new economic growth point. But there are still some problems in the digital of new media development. How to treat these problems to take effective countermeasures is vital to healthy development of the new media. Our research proposes corresponding guidance and the perspective on the development orientation which acts as the paradigm and the guideline.
文摘This paper explores the advantages of multimedia and network-based language teaching over traditional approaches and those of New Horizon College English over traditional textbooks and puts forward several suggestions on how to use multimedia and network technology to reform college English teaching in the teaching of New Horizon College English.
