Mobile multimedia streaming is an open topic in vehicular environment. Due to the high intermittent links, it has become a critical challenge to deliver high quality video streaming in vehicular networks. In this pape...Mobile multimedia streaming is an open topic in vehicular environment. Due to the high intermittent links, it has become a critical challenge to deliver high quality video streaming in vehicular networks. In this paper, we reform the Information Centric Networking （ICN） concept for multimedia delivery in urban vehicular networks. By leveraging the 1CN perspective, we highlight that vehicular peers can obtain multimedia chunks via the vehicle-to-cloud （V2C） approach to improve the delivery quality. Based on this, we propose a lightweight multipath selection strategy to guide the network system to adaptively adjust the forwarding means. Extensive simulations show that the proposed solution can optimize the utilization of network paths, lighten network loads as well as avoid wasting resources.展开更多
Because most people consider advertising as an irritant and a distraction and would avoid it, should there be an alternative, advertising agencies strive to utilize the interactive, demassifying, and asynchronous qual...Because most people consider advertising as an irritant and a distraction and would avoid it, should there be an alternative, advertising agencies strive to utilize the interactive, demassifying, and asynchronous qualities of newer technologies to create an appealing advertisement. The current study investigates whether college students＇ attitudes toward advertising on traditional media are different when online advertising is used, especially on Social Media Networking Sites （SMNSs）. Employing the concept of reciprocity （of replicating offline attitudes online） and the flow theory that relates one＇s concentration on an activity and its impact on other occurrences happening around him/her, 287 college students responded to a questionnaire on their perceptions of online advertising, their preferred SMNS, and the SMNS on which they would consider viewing an advertising message. The results showed that 57.8% of the participants avoid online advertising at all costs, which is similar to their offline perception of advertising. Some 42.2% reported that they may consider viewing online advertising if the attributes of relevance, interest, creativity, and interactivity are present, as in viral advertisement. In addition, among the four SMNSs reviewed--Facebook, MySpace, Twitter, and Linkedln--a majority of students indicated that Facebook is their preferred site for online advertising because it allows for creativity and they consider those messages credible, especially if their Facebook friends tagged, liked, or shared the advertisement.展开更多
With the arrival ofthe era from the media, the internet spread over all sectors ofsocicty, affect people＇s political, economic and cultural life. The network has become the main place, people express their views so a...With the arrival ofthe era from the media, the internet spread over all sectors ofsocicty, affect people＇s political, economic and cultural life. The network has become the main place, people express their views so also. And the popularity of media enables consumers to easily express their products, services and other aspects of the topic, spread on the network at breakneck speed, and other users of the attention and support, thus forming a kind of public opinion, influence The development of enterprises, which will undoubtedly bring unprecedented pressure, constant attention, coupled with people＇s comments, forwarding, dissemination media, making the crisis spread, enterprises should not reasonable, effective, will enable enterprises to establish a sense of trust collapsed, brought a negative impact to the enterprise.展开更多
A secure communication mechanism is necessary in the applications of Wireless Multimedia Sensor Networks (WMSNs), which is more vulnerable to security attacks due to the presence of multimedia data. Additionally, give...A secure communication mechanism is necessary in the applications of Wireless Multimedia Sensor Networks (WMSNs), which is more vulnerable to security attacks due to the presence of multimedia data. Additionally, given the limited technological resources (in term of energy, computation, bandwidth, and storage) of sensor nodes, security and privacy policies have to be combined with energy-aware algorithms and distributed processing of multimedia contents in WMSNs. To solve these problems in this paper, an energy efficient distributed steganography scheme, which combines steganography technique with the concept of distributed computing, is proposed for secure communication in WMSNs. The simulation results show that the proposed method can achieve considerable energy efficiency while assuring the communication security simultaneously.展开更多
In Wireless Sensor Networks(WSNs),polling can obviously improve the throughput and decrease average access delay by allocating bandwidth efficiently and reasonably.In this paper,a Dynamic Polling Media Access Control ...In Wireless Sensor Networks(WSNs),polling can obviously improve the throughput and decrease average access delay by allocating bandwidth efficiently and reasonably.In this paper,a Dynamic Polling Media Access Control (DPMAC) scheme designed according to WSNs' features is proposed.DPMAC is a priority based access control protocol with the characteristics that its polling table is dynamically refreshed depending on whether the sensor node is active and that the bandwidth is dynamically allocated according to the traffic types.The access priorities are determined by the emergency levels of events and the scheduler proposed in our MAC is preemptive based on the deadline of the events.Simulation results show that DPMAC can efficiently utilize bandwidth and decrease average access delay and response time for emergency events with different access priorities in WSNs.展开更多
With the requirements of multimedia service increasing in people＇ s life, sensor modules such as microphone, camera are added in the smart home＇ s sensor network, and the acquisition and processing of a large amount...With the requirements of multimedia service increasing in people＇ s life, sensor modules such as microphone, camera are added in the smart home＇ s sensor network, and the acquisition and processing of a large amount of information media such as audio, image and video is becoming a significant characteristics of smart home. The paper focuses on solving the following technical problems： the building of Zigbee multimedia network, the Design and selection of multimedia sensor node. These provide the basic network platform and the core technical support for the building of smart home.展开更多
The Wyner-Ziv distributed video coding scheme is characterized for its intraframe encoder and interframe decoder which can also approach the efficiency of an interframe encoder-decoder system. In Wyner-Ziv residual co...The Wyner-Ziv distributed video coding scheme is characterized for its intraframe encoder and interframe decoder which can also approach the efficiency of an interframe encoder-decoder system. In Wyner-Ziv residual coding of video, the residual of a frame with respect to a reference frame is Wyner-Ziv encoded, which can reduces the input entropy and leads to a higher coding efficiency than directly encoding the original frame. In this paper, we propose a new approach of residual coding combined with Region Of Interest (ROI) extraction. Experimental results show that, the proposed scheme achieves better rate-distortion performance compared to conventional Wyner-Ziv coding scheme.展开更多
As a developing Non-profit Organization （NPO） system for the learning and diffusion of Chinese language and culture around the globe, the Confucius Institute network is becoming more and more important for China＇s ...As a developing Non-profit Organization （NPO） system for the learning and diffusion of Chinese language and culture around the globe, the Confucius Institute network is becoming more and more important for China＇s presence and influence in a diversified arena of world cultures. While this network is being enlarged and improved with the Chinese govemment＇s persistent backing, it is, however, recognized that the influence and efficiency of the institutes are still limited. It might not be essential whether people come primarily as serious language learners, but necessarily, the platform has to be attractive enough for a considerable proportion of users to stick on, making the Confucius Institute System a sustainable cultural service provider. Within the background of information society, the Intemet, mobile service, digital broadcasting, and other types of new media would act as an important effort to help Confucius Institutes to improve the capabilities of interacting with users, offering users with abundant media-rich content, and minimizing users＇ inconvenience by enhancing users＇ experience, lowering travel and time cost, and easily providing multi-lingual support. In this paper, we take the platform of Confucius Institute Online （http：//www.chinese.cn, the official Intemet portal of the Confucius Institute network） as a case of actuality to analyze how the Confucius Institute system could utilize the communication capability of new media to enrich, enlarge, and enhance the diffusion of Chinese culture and language. Advantages and deficiencies of the planning, design, and layout of the portal＇s functionality and views are presented, upon which a number of strategic suggestions are raised, for the sake of further improvement of Confucius Institute＇s efficiency in cultural diffusion and sustainable development.展开更多
基金partially supported by the Fundamental Research Funds for the Central Universities under Grant No.2015JBM009the National Natural Science Foundation of China(NSFC) under Grant 61602030 U1404611,61301081+1 种基金the Project Funded by China Postdoctoral Science Foundation under Grant No.2016T90031,2015M570028 and 2015M580970the Program for Science & Technology Innovation Talents in the University of Henan Province under Grant No.16HASTIT035
文摘Mobile multimedia streaming is an open topic in vehicular environment. Due to the high intermittent links, it has become a critical challenge to deliver high quality video streaming in vehicular networks. In this paper, we reform the Information Centric Networking （ICN） concept for multimedia delivery in urban vehicular networks. By leveraging the 1CN perspective, we highlight that vehicular peers can obtain multimedia chunks via the vehicle-to-cloud （V2C） approach to improve the delivery quality. Based on this, we propose a lightweight multipath selection strategy to guide the network system to adaptively adjust the forwarding means. Extensive simulations show that the proposed solution can optimize the utilization of network paths, lighten network loads as well as avoid wasting resources.
文摘Because most people consider advertising as an irritant and a distraction and would avoid it, should there be an alternative, advertising agencies strive to utilize the interactive, demassifying, and asynchronous qualities of newer technologies to create an appealing advertisement. The current study investigates whether college students＇ attitudes toward advertising on traditional media are different when online advertising is used, especially on Social Media Networking Sites （SMNSs）. Employing the concept of reciprocity （of replicating offline attitudes online） and the flow theory that relates one＇s concentration on an activity and its impact on other occurrences happening around him/her, 287 college students responded to a questionnaire on their perceptions of online advertising, their preferred SMNS, and the SMNS on which they would consider viewing an advertising message. The results showed that 57.8% of the participants avoid online advertising at all costs, which is similar to their offline perception of advertising. Some 42.2% reported that they may consider viewing online advertising if the attributes of relevance, interest, creativity, and interactivity are present, as in viral advertisement. In addition, among the four SMNSs reviewed--Facebook, MySpace, Twitter, and Linkedln--a majority of students indicated that Facebook is their preferred site for online advertising because it allows for creativity and they consider those messages credible, especially if their Facebook friends tagged, liked, or shared the advertisement.
文摘With the arrival ofthe era from the media, the internet spread over all sectors ofsocicty, affect people＇s political, economic and cultural life. The network has become the main place, people express their views so also. And the popularity of media enables consumers to easily express their products, services and other aspects of the topic, spread on the network at breakneck speed, and other users of the attention and support, thus forming a kind of public opinion, influence The development of enterprises, which will undoubtedly bring unprecedented pressure, constant attention, coupled with people＇s comments, forwarding, dissemination media, making the crisis spread, enterprises should not reasonable, effective, will enable enterprises to establish a sense of trust collapsed, brought a negative impact to the enterprise.
基金Sponsored by the National Natural Science Foundation of China (No. 60973139, 61170065, 61171053, 61003039,61003236)the Natural Science Foundation of Jiangsu Province (BK2011755, BK2012436)+3 种基金Scientific & Technological Support Project of Jiangsu Province (BE2011844,BE2011189)Jiangsu Provincial Research Scheme of Natural Science for Higher Education Institutions(12KJB520009)Science & Technology Innovation Fundfor Higher Education Institutions of Jiangsu Province(CXZZ11-0405)the Peak of Six Major Talent inJiangsu Province (2010DZXX026)
文摘A secure communication mechanism is necessary in the applications of Wireless Multimedia Sensor Networks (WMSNs), which is more vulnerable to security attacks due to the presence of multimedia data. Additionally, given the limited technological resources (in term of energy, computation, bandwidth, and storage) of sensor nodes, security and privacy policies have to be combined with energy-aware algorithms and distributed processing of multimedia contents in WMSNs. To solve these problems in this paper, an energy efficient distributed steganography scheme, which combines steganography technique with the concept of distributed computing, is proposed for secure communication in WMSNs. The simulation results show that the proposed method can achieve considerable energy efficiency while assuring the communication security simultaneously.
基金supported by the National Natural Science Foundation of China under Grants No.61172068,61003300the Key Program of NSFC Guangdong Union Foundation under Grant No.U0835004+2 种基金the National Grand Fundamental Research 973 Program of China under Grant No.A001200907the Fundamental Research Funds for the Central Universities under Grant No.K50511010003Program for New Century Excellent Talents in University under Grant No.NCET-11-0691
文摘In Wireless Sensor Networks(WSNs),polling can obviously improve the throughput and decrease average access delay by allocating bandwidth efficiently and reasonably.In this paper,a Dynamic Polling Media Access Control (DPMAC) scheme designed according to WSNs' features is proposed.DPMAC is a priority based access control protocol with the characteristics that its polling table is dynamically refreshed depending on whether the sensor node is active and that the bandwidth is dynamically allocated according to the traffic types.The access priorities are determined by the emergency levels of events and the scheduler proposed in our MAC is preemptive based on the deadline of the events.Simulation results show that DPMAC can efficiently utilize bandwidth and decrease average access delay and response time for emergency events with different access priorities in WSNs.
文摘With the requirements of multimedia service increasing in people＇ s life, sensor modules such as microphone, camera are added in the smart home＇ s sensor network, and the acquisition and processing of a large amount of information media such as audio, image and video is becoming a significant characteristics of smart home. The paper focuses on solving the following technical problems： the building of Zigbee multimedia network, the Design and selection of multimedia sensor node. These provide the basic network platform and the core technical support for the building of smart home.
基金Supported by the National Natural Science Foundation of China (No.61003236, 61171053, 61170065)the Doctoral Fund of Ministry of Education of China (No.20113223110002)the Natural Science Major Program for Colleges and Universities in Jiangsu Province(No.11KJA520001)
文摘The Wyner-Ziv distributed video coding scheme is characterized for its intraframe encoder and interframe decoder which can also approach the efficiency of an interframe encoder-decoder system. In Wyner-Ziv residual coding of video, the residual of a frame with respect to a reference frame is Wyner-Ziv encoded, which can reduces the input entropy and leads to a higher coding efficiency than directly encoding the original frame. In this paper, we propose a new approach of residual coding combined with Region Of Interest (ROI) extraction. Experimental results show that, the proposed scheme achieves better rate-distortion performance compared to conventional Wyner-Ziv coding scheme.
文摘As a developing Non-profit Organization （NPO） system for the learning and diffusion of Chinese language and culture around the globe, the Confucius Institute network is becoming more and more important for China＇s presence and influence in a diversified arena of world cultures. While this network is being enlarged and improved with the Chinese govemment＇s persistent backing, it is, however, recognized that the influence and efficiency of the institutes are still limited. It might not be essential whether people come primarily as serious language learners, but necessarily, the platform has to be attractive enough for a considerable proportion of users to stick on, making the Confucius Institute System a sustainable cultural service provider. Within the background of information society, the Intemet, mobile service, digital broadcasting, and other types of new media would act as an important effort to help Confucius Institutes to improve the capabilities of interacting with users, offering users with abundant media-rich content, and minimizing users＇ inconvenience by enhancing users＇ experience, lowering travel and time cost, and easily providing multi-lingual support. In this paper, we take the platform of Confucius Institute Online （http：//www.chinese.cn, the official Intemet portal of the Confucius Institute network） as a case of actuality to analyze how the Confucius Institute system could utilize the communication capability of new media to enrich, enlarge, and enhance the diffusion of Chinese culture and language. Advantages and deficiencies of the planning, design, and layout of the portal＇s functionality and views are presented, upon which a number of strategic suggestions are raised, for the sake of further improvement of Confucius Institute＇s efficiency in cultural diffusion and sustainable development.
