Media literacy and understanding the digital information around us are an area of communication that affects all of us. How people are represented in the media, social media and our civic participation affect our repr...Media literacy and understanding the digital information around us are an area of communication that affects all of us. How people are represented in the media, social media and our civic participation affect our representations and understanding of the truth. The author would argue through research and practical examples that civic engagement and associations with a peer group can counteract some of the issues facing digital media today. In an age of the so-called ＂fake news,＂ there are tools we can provide for our teams, our employees, and our collaborators to make sure we are all on the same page and dealing with the same set of verifiable facts展开更多
A novel method is proposed to analyze the capacity of future Code Division Multiple Access （CDMA） systems carrying multimedia services. The power level allocation is firstly investigated to meet each call＇s Bit Err...A novel method is proposed to analyze the capacity of future Code Division Multiple Access （CDMA） systems carrying multimedia services. The power level allocation is firstly investigated to meet each call＇s Bit Error Rate （BER） requirement, then the system capacity is defined from the conditions lbr the existence of the physical meaning of these power levels. Simulation results have shown that the capacity analyzing methods can be well used in the performance evaluation of the system accommodating heterogeneous services and the spectral efficiency of this scheme is higher than the existing ones.展开更多
What is the true sense of freedom？ Man is free and lacks freedom. The author considers the example of Louis XIV. It seemed that he held the sovereignty as the king of the absolute monarchy and the greatest freedom. B...What is the true sense of freedom？ Man is free and lacks freedom. The author considers the example of Louis XIV. It seemed that he held the sovereignty as the king of the absolute monarchy and the greatest freedom. But all his teeth were pulled out to protect him from illness and in his exercise as the king, he had many official obligations. Though he was king, he was free and lacked freedom. According to J. J. Rousseau （1762） who discussed the principle of freedom and oppression （deprivation）, if man realizes freedom, it needs to express his duty and subordination to the state. Therefore man is free and lacks freedom. What is the situation of contemporary citizens？ Instead of the oppression by the state, the citizen is controlled by the mass media. The best example is the drama observed about the prime ministers of Japan. There were many manipulations by the mass media. For our benefit we need to educate the persons who have good sense. We should remember that our freedom is not absolute. We are free and lack freedom, too. Often man searches freedom and comfort but often, on the contrary, he faces the lack of freedom. Electricity that is produced by a nuclear plant is useful, but the explosion of the nuclear plant creates a huge damage and tragedy, In a sense, deprivation is larger than freedom, because it could teach us self- awareness, moderation and let us know that we have enough.展开更多
The delay and DVBMT problem is known to be NP-complete. In this paper,an efficient distributed dynamic multicast routing algorithm was proposed to produce routing trees with delay and delay variation constraints. The ...The delay and DVBMT problem is known to be NP-complete. In this paper,an efficient distributed dynamic multicast routing algorithm was proposed to produce routing trees with delay and delay variation constraints. The proposed algorithm is fully distributed,and supports the dynamic reorganizing of the multicast tree in response to changes for the destination. Simulations demonstrate that our algorithm is better in terms of tree delay and routing success ratio as compared with other existing algorithms,and performs excellently in delay variation performance under lower time complexity,which ensures it to support the requirements of real-time multimedia communications more effectively.展开更多
文摘Media literacy and understanding the digital information around us are an area of communication that affects all of us. How people are represented in the media, social media and our civic participation affect our representations and understanding of the truth. The author would argue through research and practical examples that civic engagement and associations with a peer group can counteract some of the issues facing digital media today. In an age of the so-called ＂fake news,＂ there are tools we can provide for our teams, our employees, and our collaborators to make sure we are all on the same page and dealing with the same set of verifiable facts
基金Supported by the open research fund of the National Mobile Communications Key Lab of the Southeast Uni-versity and by the Hong Kong Research Council.
文摘A novel method is proposed to analyze the capacity of future Code Division Multiple Access （CDMA） systems carrying multimedia services. The power level allocation is firstly investigated to meet each call＇s Bit Error Rate （BER） requirement, then the system capacity is defined from the conditions lbr the existence of the physical meaning of these power levels. Simulation results have shown that the capacity analyzing methods can be well used in the performance evaluation of the system accommodating heterogeneous services and the spectral efficiency of this scheme is higher than the existing ones.
文摘What is the true sense of freedom？ Man is free and lacks freedom. The author considers the example of Louis XIV. It seemed that he held the sovereignty as the king of the absolute monarchy and the greatest freedom. But all his teeth were pulled out to protect him from illness and in his exercise as the king, he had many official obligations. Though he was king, he was free and lacked freedom. According to J. J. Rousseau （1762） who discussed the principle of freedom and oppression （deprivation）, if man realizes freedom, it needs to express his duty and subordination to the state. Therefore man is free and lacks freedom. What is the situation of contemporary citizens？ Instead of the oppression by the state, the citizen is controlled by the mass media. The best example is the drama observed about the prime ministers of Japan. There were many manipulations by the mass media. For our benefit we need to educate the persons who have good sense. We should remember that our freedom is not absolute. We are free and lack freedom, too. Often man searches freedom and comfort but often, on the contrary, he faces the lack of freedom. Electricity that is produced by a nuclear plant is useful, but the explosion of the nuclear plant creates a huge damage and tragedy, In a sense, deprivation is larger than freedom, because it could teach us self- awareness, moderation and let us know that we have enough.
文摘The delay and DVBMT problem is known to be NP-complete. In this paper,an efficient distributed dynamic multicast routing algorithm was proposed to produce routing trees with delay and delay variation constraints. The proposed algorithm is fully distributed,and supports the dynamic reorganizing of the multicast tree in response to changes for the destination. Simulations demonstrate that our algorithm is better in terms of tree delay and routing success ratio as compared with other existing algorithms,and performs excellently in delay variation performance under lower time complexity,which ensures it to support the requirements of real-time multimedia communications more effectively.
