E-mail communication network evolution model based on user information propagation is studied. First, mathematical representation of weighted e-mail communication network is proposed, and network center parameters of ...E-mail communication network evolution model based on user information propagation is studied. First, mathematical representation of weighted e-mail communication network is proposed, and network center parameters of Enron dataset and the distribution of node degree and strength are analyzed. Then, some rules of e-mail communication network evolution are found. Second, the model of e-mail information propagation is described, and e-mail communication network evolution model based on user information propagation is proposed. Lastly, the simulation proves the correctness of the distribution characteristic of degree and strength of the model proposed and then verifies that the model proposed is closer to the real situation of e-mail communication network through parameter comparison. This research provides the basis for other researches on social network evolution and data communication.展开更多
The characteristic of EDFA in WDM system is analyzed. The simulation system based on the architecture of the China Information Network (CAINONET) is introduced, and the influence of noise figure, gain unflatness and o...The characteristic of EDFA in WDM system is analyzed. The simulation system based on the architecture of the China Information Network (CAINONET) is introduced, and the influence of noise figure, gain unflatness and output power of EDFA on the BER performance and scale of network is investigated. Moreover, the influence of noise figure is studied with different crosstalk . Meanwhile, it is indicated that it is important to apply the "node isolation principle" in the optical network. The research results can provide the valuable reference for the practical construction of all optical network .展开更多
This paper proposes a joint network-channel codingbased on turbo codes for user cooperation. The scenario under consideration is one in which two "partners"--UE1 and UE2---cooperate in transmitting information to th...This paper proposes a joint network-channel codingbased on turbo codes for user cooperation. The scenario under consideration is one in which two "partners"--UE1 and UE2---cooperate in transmitting information to the base station (BS). Each partner transmits both locally generated information and the relayed information that originated at the other partner. The local information and relayed information are jointly network-channel coded to form a superimposed codeword, and the adjacent codewords transmitted in turn by the two partners are tightly correlative like a chain. It is shown via simulation that the proposed scheme achieves full diversity gain compared with the other user cooperation schemes, including those based on coded cooperation and distributed space-time coded cooperation.展开更多
The 21 st century is an era of information technology, network technology is in all areas of life and production and also higher education administration began to apply network technology and network management. Howev...The 21 st century is an era of information technology, network technology is in all areas of life and production and also higher education administration began to apply network technology and network management. However, in the rapid development of information technology today, due to network with their own information technology, high-speed, information-based features are widely used in educational management in universities, so that some common problems on the network has infiltrated into university education management, making College Educational management in the New face new problems and challenges. Through the influence of network technology for Higher Education Management of the research on network technology we make a few constructive suggestions on education management application and Universities.展开更多
Network information technology is the product of the combination of communication and computer technology. The computer network is to interconnect the world dispersed and independent computers in accordance with the n...Network information technology is the product of the combination of communication and computer technology. The computer network is to interconnect the world dispersed and independent computers in accordance with the network protocol. With the rapid development of information technology at home and abroad, the developed countries or parts of the developing countries are strengthening their national information infrastructure. Several of gold projects in information technology as the representative is gradually go deeper, forming an unprecedented development in the entire information network technology. With the globalization of the construction market and intensifying of the competition, construction management requires the higher information technology, which is relatively backward in China' s construction industry. So it has important practical significance to clearly recognize the entire network computing model and technology developments, and properly apply to the construction project management.展开更多
基金sponsored by the National Natural Science Foundation of China under grant number No. 61100008, 61201084the China Postdoctoral Science Foundation under Grant No. 2013M541346+3 种基金Heilongiiang Postdoctoral Special Fund (Postdoctoral Youth Talent Program) under Grant No. LBH-TZ0504Heilongjiang Postdoctoral Fund under Grant No. LBH-Z13058the Natural Science Foundation of Heilongjiang Province of China under Grant No. QC2015076Funds for the Central Universities of China under grant number HEUCF100602
文摘E-mail communication network evolution model based on user information propagation is studied. First, mathematical representation of weighted e-mail communication network is proposed, and network center parameters of Enron dataset and the distribution of node degree and strength are analyzed. Then, some rules of e-mail communication network evolution are found. Second, the model of e-mail information propagation is described, and e-mail communication network evolution model based on user information propagation is proposed. Lastly, the simulation proves the correctness of the distribution characteristic of degree and strength of the model proposed and then verifies that the model proposed is closer to the real situation of e-mail communication network through parameter comparison. This research provides the basis for other researches on social network evolution and data communication.
文摘The characteristic of EDFA in WDM system is analyzed. The simulation system based on the architecture of the China Information Network (CAINONET) is introduced, and the influence of noise figure, gain unflatness and output power of EDFA on the BER performance and scale of network is investigated. Moreover, the influence of noise figure is studied with different crosstalk . Meanwhile, it is indicated that it is important to apply the "node isolation principle" in the optical network. The research results can provide the valuable reference for the practical construction of all optical network .
文摘This paper proposes a joint network-channel codingbased on turbo codes for user cooperation. The scenario under consideration is one in which two "partners"--UE1 and UE2---cooperate in transmitting information to the base station (BS). Each partner transmits both locally generated information and the relayed information that originated at the other partner. The local information and relayed information are jointly network-channel coded to form a superimposed codeword, and the adjacent codewords transmitted in turn by the two partners are tightly correlative like a chain. It is shown via simulation that the proposed scheme achieves full diversity gain compared with the other user cooperation schemes, including those based on coded cooperation and distributed space-time coded cooperation.
文摘The 21 st century is an era of information technology, network technology is in all areas of life and production and also higher education administration began to apply network technology and network management. However, in the rapid development of information technology today, due to network with their own information technology, high-speed, information-based features are widely used in educational management in universities, so that some common problems on the network has infiltrated into university education management, making College Educational management in the New face new problems and challenges. Through the influence of network technology for Higher Education Management of the research on network technology we make a few constructive suggestions on education management application and Universities.
文摘Network information technology is the product of the combination of communication and computer technology. The computer network is to interconnect the world dispersed and independent computers in accordance with the network protocol. With the rapid development of information technology at home and abroad, the developed countries or parts of the developing countries are strengthening their national information infrastructure. Several of gold projects in information technology as the representative is gradually go deeper, forming an unprecedented development in the entire information network technology. With the globalization of the construction market and intensifying of the competition, construction management requires the higher information technology, which is relatively backward in China' s construction industry. So it has important practical significance to clearly recognize the entire network computing model and technology developments, and properly apply to the construction project management.