Invited Talks
Collaborative Video Playback on a Federation of Tiled Mobile Projectors enabled by Visual Feedback by Prof. Dr. Magda El Zarki

Using Decomposition Techniques for the Design of Survivable Logical Topologies by Prof. Dr. Brigitte Jaumard

Cloud, Social, Mobile – and the future of Business Collaboration by Dr. Venkatesh Krishnaswamy

 
Collaborative Video Playback on a Federation of Tiled Mobile Projectors enabled by Visual Feedback
Prof. Dr. Magda El Zarki
Dept. of Computer Science,
UC, Irvine

Authors:
Magda El Zarki

Abstract:
Pico projectors are expected to become increasingly popular in the near future, in particular when embedded in mobile devices such as smart phones, portable media players and digital cameras. The average consumer, seeking more features and attracted to all in one portable devices, will find such integrated devices very appealing. However the resolution and the brightness provided by integrated mobile projectors are much lower than what standard projectors commonly offer. Our collaborative scheme based on our synchronization technique provides a means of increasing resolution and brightness for the video projected by such mobile devices, significantly enhancing the viewing experience for the user. In this talk, I will present a collaborative video playback on mobile projectors, set out and managed only through visual feedback. More specifically I will introduce a camera-based video synchronization algorithm that allows a federation of projection-enabled mobile devices to collaboratively present a full video stream that consists of multiple sub streams, each streamed to a different mobile device constituting the ensemble. Since the synchronization does not use any wireless network infrastructure, it is independent of network congestion and connectivity. For this project we combined our synchronization method with existing distributed registration techniques to demonstrate a synchronized video stream for a collaborative federation of four projectors arranged in a 2 × 2 array.

Bio:
Prof. El Zarki's lab focuses on multimedia transmission over packet networks. The work consists of both theoretical studies and practical implementations where we test out algorithms and new mechanisms to improve quality of service on the client's end device. Both wireline and wireless networks and all types of video and audio media are considered. Recent work has shifted to networked games and massively multi user virtual environments (MMUVE). We are studying the quality of experience of player's in applications where precision and time constraints are a major concern for game playability. A new effort also focuses on the development of virtual training applications in the arena of education, digital heritage and autism.

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Using Decomposition Techniques for the Design of Survivable Logical Topologies
Prof. Dr. Brigitte Jaumard
Computer Science and Software Engineering, Department at Concordia University.

Authors:
Brigitte Jaumard, Hai Anh Hoang, and Minh Bui

Abstract:
We study the design of logical survivable topologies for service protection against single or multiple failures in IP-over-WDM networks where protection can be provided either at the optical layer, or at the network (IP) layer. Indeed, synergies need to be developed between IP and optical layers in order to optimize the resource utilization and to reduce the costs and the energy consumption of the future networks.

We propose a new optimization model, an enhanced cutset model, which relies on a column generation reformulation for the design of a survivable logical topology. It is a highly scalable model and it makes possible the (near) exact solution of several benchmark instances, which were only solved with the help of heuristics so far. In addition, much larger instances than in previous studies can be solved as the proposed formulation avoids the explicit or implicit enumeration of cutsets. In the numerical experiments, we explore how survivability evolves when the number of failure sets increases.

Bio:
Prof. Dr. Brigitte Jaumard holds a Concordia University Research Chair, Tier 1, on the Optimization of Communication Networks in the CSE – Computer Science and Software Engineering – Department at Concordia University. Her research focuses on mathematical modeling and algorithm design for large-scale optimization problems in communication networks and artificial intelligence. Recent studies include the design of the most efficient algorithms for p-cycle based protection schemes, under static and dynamic traffic, and their generalization to the so-called p-structures, which encompass all previously proposed pre-cross-connected pre-configured protection schemes. Other recent studies deal with provisioning and scheduling algorithms in optical grids, in broadband wireless networks and in passive optical networks. In Artificial Intelligence, contributions include the development of efficient optimization algorithms for probabilistic logic (reasoning under uncertainty) and for automated mechanical design in social networks (design of trust estimator tools). B. Jaumard has published over 200 papers in international journals in Operations Research and in Telecommunications..

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Cloud, Social, Mobile – and the future of Business Collaboration
Dr. Venkatesh Krishnaswamy
Senior Director, IP Communications Research
Avaya

Authors:
Dr. Venkatesh Krishnaswamy

Abstract:
Three of the most significant consumer technology trends that are already impacting enterprises are cloud computing; proliferation of smart mobile end-points and social networking. Together they constitute a significant discontinuity to several long running themes in enterprise collaboration. Today, we take for granted that our individual workflows are governed by email and calendars; our content is trapped inside desktop and IT-run file stores and portals; and our user experience of collaboration has to be manually assembled using several complicated desktop tools. In this talk I will examine how emerging new models of social collaboration and cloud-based content management impact business communications. I will also describe the impact of pervasive mobility on how people will collaborate with each other in the future.

Bio:
Dr. Venkatesh Krishnaswamy is Senior Director of IP Communications Research at Avaya Labs. He joined Bell Labs in 1991 and over the years has played a key role in defining and developing strategic technologies and applications for Bell Labs and Avaya. His recent focus has been in the area of Context-Aware Communications applications, leveraging technologies such as SIP, web services, search and communication analytics. Krishnaswamy holds masters and doctorate degrees in computer science from Yale University and a bachelor's degree in technology from the Indian Institute of Technology Madras. He is the author of numerous papers and articles on a variety of telecommunications and Internet topics and has been an invited speaker at numerous conference and industry events. He holds nine US and international patents.

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Last updated on: November 29, 2011 2:27 PM