The Experts below are selected from a list of 97932 Experts worldwide ranked by ideXlab platform
Jordy Kaufman - One of the best experts on this subject based on the ideXlab platform.
-
When and why parents involve young children in Video Communication
Journal of Children and Media, 2016Co-Authors: Joanne Tarasuik, Jordy KaufmanAbstract:AbstractRecent media reports have suggested Video Communication use by young children. However, the popularity of Video Communication by young children has yet been determined. Although some research has shown similarities between young children’s experience of a parent’s physical and virtual presence, little is known about the ecological applications of Video Communication and its benefits to young children. Using a brief quantitative questionnaire, this study shows that younger children started Video Communication at significantly earlier ages than the older children in the sample (n = 308). Qualitative responses from parents of 17 children suggested different perceptions of their children's Video Communication experience. These preliminary findings are considered in the context of the value of Video Communication in different situations, the developmental factors associated with screen media including memory transfer across modalities, and the development of skills that facilitate effective Communication.
-
Almost being there: Video Communication with young children.
PloS one, 2011Co-Authors: Joanne Tarasuik, Roslyn Galligan, Jordy KaufmanAbstract:Background Video Communication is increasingly used to connect people around the world. This includes connecting young children with their parents and other relatives during times of separation. An important issue is the extent to which Video Communication with children can approximate a physical presence such that familial relationships can be truly maintained by this means. Methodology/Principal Findings The current study employed an adaptation of the Separation and Reunion Paradigm with children (17 months to 5 years) to investigate the potential for Video Communication with a parent to afford a sense of proximity and security to children. The protocol involved a free-play session with the parent, followed by two separation-reunion episodes. During one of the separation episodes the parent was ‘virtually available’ to the child via a Video link. Our results revealed three important differences. First, children left alone played longer in a strange room when their parent was virtually available to them compared to when the children were left alone with neither physical nor Video contact with their parent. Second, younger participants sought physical contact with their parent less at the end of the Video separation episode compared to when they were left entirely alone. Finally, the comparison between free play with Video and free play with parent, revealed that the children exhibit a similar level of interactivity with their parent by Video as they did in person. Conclusions/Significance For young children a Video connection can have many of the same effects as a physical presence. This is a significant finding as it is the first such empirical demonstration and indicates considerable promise in Video Communication as a tool to maintain family relationships when physical presence is not possible.
Joanne Tarasuik - One of the best experts on this subject based on the ideXlab platform.
-
When and why parents involve young children in Video Communication
Journal of Children and Media, 2016Co-Authors: Joanne Tarasuik, Jordy KaufmanAbstract:AbstractRecent media reports have suggested Video Communication use by young children. However, the popularity of Video Communication by young children has yet been determined. Although some research has shown similarities between young children’s experience of a parent’s physical and virtual presence, little is known about the ecological applications of Video Communication and its benefits to young children. Using a brief quantitative questionnaire, this study shows that younger children started Video Communication at significantly earlier ages than the older children in the sample (n = 308). Qualitative responses from parents of 17 children suggested different perceptions of their children's Video Communication experience. These preliminary findings are considered in the context of the value of Video Communication in different situations, the developmental factors associated with screen media including memory transfer across modalities, and the development of skills that facilitate effective Communication.
-
Almost being there: Video Communication with young children.
PloS one, 2011Co-Authors: Joanne Tarasuik, Roslyn Galligan, Jordy KaufmanAbstract:Background Video Communication is increasingly used to connect people around the world. This includes connecting young children with their parents and other relatives during times of separation. An important issue is the extent to which Video Communication with children can approximate a physical presence such that familial relationships can be truly maintained by this means. Methodology/Principal Findings The current study employed an adaptation of the Separation and Reunion Paradigm with children (17 months to 5 years) to investigate the potential for Video Communication with a parent to afford a sense of proximity and security to children. The protocol involved a free-play session with the parent, followed by two separation-reunion episodes. During one of the separation episodes the parent was ‘virtually available’ to the child via a Video link. Our results revealed three important differences. First, children left alone played longer in a strange room when their parent was virtually available to them compared to when the children were left alone with neither physical nor Video contact with their parent. Second, younger participants sought physical contact with their parent less at the end of the Video separation episode compared to when they were left entirely alone. Finally, the comparison between free play with Video and free play with parent, revealed that the children exhibit a similar level of interactivity with their parent by Video as they did in person. Conclusions/Significance For young children a Video connection can have many of the same effects as a physical presence. This is a significant finding as it is the first such empirical demonstration and indicates considerable promise in Video Communication as a tool to maintain family relationships when physical presence is not possible.
Zhu Zhenmin - One of the best experts on this subject based on the ideXlab platform.
-
Implementation of Android Video Communication Terminal Based on SIP
Computer Engineering, 2012Co-Authors: Zhu ZhenminAbstract:Aiming at the problems of NAT and tolerance for wireless Video Communication quality,this paper studies the adjustment of the packet loss rate.It uses STUN to solve the problem of traversing NAT devices in Communication,called Android NDK for compressing Video data,and designs a SIP terminal system of Video Communication on Android platform.Experimental results show that,the packet loss rate can generally be controlled below 3% in transmission when the packet size in less than 5 KB and the frequency of send data packet is 25~40 per second.
Bernd Girod - One of the best experts on this subject based on the ideXlab platform.
-
network adaptive low latency Video Communication over best effort networks
IEEE Transactions on Circuits and Systems for Video Technology, 2006Co-Authors: Y J Liang, Bernd GirodAbstract:The quality of service limitation of today's best-effort networks poses major challenge for low-latency Video Communication. To combat network losses for real-time and on-demand Video Communication, which exhibits stronger dependency across packets, a network-adaptive coding scheme is employed to dynamically manage the packet dependency using optimal reference picture selection. The selection of the reference is achieved within a rate-distortion optimization framework and is adapted to the varying network conditions. For network-adaptive streaming of prestored Video, based on an accurate loss-distortion model, a prescient scheme that optimizes the dependency of a group of packets is proposed to achieve global optimality as well as improved rate-distortion performance. With the improved trade-off between compression efficiency and error resilience, the proposed system does not require retransmission of lost packets, which makes less than one-second low-latency Communication possible.
-
Video Communication-advances and applications
Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042), 1Co-Authors: Bernd GirodAbstract:This overview paper considers the applications driving today's progress in Video Communication and then reviews the principles behind advanced Video compression technology, such as standardized in ITU-T Rec. H.263 or ISO MPEG. In addition, we look at the problem of robustness against packet loss, that has to be solved to transmit Video over wireless channels or the Internet. Addressing promising directions for the future development of Video compression, we discuss and illustrate the performance of multiframe prediction methods and advanced motion models.
Ling Guan - One of the best experts on this subject based on the ideXlab platform.
-
Optimal Resource Allocation for Distributed Video Communication
2013Co-Authors: Ling Guan, Wenwu ZhuAbstract:While most books on the subject focus on resource allocation in just one type of network, this book is the first to examine the common characteristics of multiple distributed Video Communication systems. Comprehensive and systematic, Optimal Resource Allocation for Distributed Video Communication presents a unified optimization framework for resource allocation across these systems. The book examines the techniques required for optimal resource allocation over Internet, wireless cellular networks, wireless ad hoc networks, and wireless sensor networks. It provides you with the required foundation in Video Communications, including Peer-to-Peer (P2P) networks, wireless networks, and visual sensor networks. Whether youre in industry or academia, youll value how the book outlines current challenges facing the field and outlines a general solution framework for addressing these challenges. From problem formulations and theoretical analysis to practical algorithms, it facilitates the comprehensive understanding required to achieve optimized Video and multimedia Communications. Presents the resource allocation techniques for scalable Video Communications over Internet or wireless networks Examines two resource allocation problemsdistributed throughput maximization for scalable P2P Video-on-Demand (VoD) systems and streaming capacity for P2P VoD systems Outlines an optimal prefetching framework for reducing seeking delays in P2P VoD applications Examines distributed optimization techniques for unicast and multicast Video streaming over wireless ad hoc networks Considers the network lifetime maximization problem in wireless visual sensor networks Detailing methods that can immediately improve the performance of your Video Communication systems, this book presents multiple applications of optimal resource allocation. For each of the applications, the authors present the problem formulation, the distributed algorithm, and the simulation results.
-
ICME - Optimal resource allocation for Video Communication over distributed systems
2009 IEEE International Conference on Multimedia and Expo, 2009Co-Authors: Ling GuanAbstract:Many multimedia applications involve real-time Video Communication over distributed systems, in which there is no centralized controller. Examples of such distributed systems are Peer-to-Peer (P2P) networks, wireless ad hoc networks, and wireless sensor networks. In this paper, we provide a review of recent advances on optimal resource allocation for Video Communication over some major distributed systems including P2P streaming systems, wireless ad hoc networks, and wireless visual sensor networks. In P2P streaming systems, we review the scheduling optimization problem, streaming capacity problem, routing optimization problem, and the prefetching optimization problem. In wireless ad hoc networks, we present the routing optimization problem, joint optimization of the source rate and the routing scheme, joint optimization of sender selection and the routing scheme, and joint optimization of the source rate, the routing scheme and the power. In wireless visual sensor networks, we discuss the network lifetime maximization problem, optimal power allocation, maximization of Accumulative Visual Information (AVI). Illustrative simulation results are provided to demonstrate the performance improvement brought by the optimal resource allocation in the distributed systems. Finally, we give our vision on the future work in the area of Video Communication over distributed systems.
