In the context of "Researchers' Night, Madrid 2010 - Creativity for progress in Europe", the IMDEA initiative will take part in the “Why I am a scientist” event, through the participation of directors from each one of the eight member institutes.

Why I am a scientist

Organiser: Madrid Institute for Advanced Studies (IMDEA)

Hour: From 18:00 p.m to 19:30 p.m

Disruptive events such as large-scale power outages, undersea cable cuts, or Internet worms could cause the Internet to deviate from its normal state of operation. This deviation from normalcy is what we call the impact on the Internet, which we also refer to as an "Internet earthquake."
 

Event program:

09:00 - 09:30 Welcome and registration

09:30 - 09:50 Opening of the Symposium
D. Arturo Azcorra, Director General, CDTI
D. Francisco Marín, President of Area of Activities for Technological Innovation, AETIC
D. Albert Banchs, Deputy Director, Institute IMDEA Networks
D. Carlos Balaguer, Vice-Rector of Research, UC3M

09:50 - 10:15 Presentations
Presentation of Institute IMDEA Networks, D. Albert Banchs (  Download presentation 2006 Kb )
Presentation of the departament for I+D+i of AETIC, D. Juan Gascón, Director for Digital Content & R&D, AETIC
(  Download presentation 2256 Kb )

10:15 - 11:00 Energy Efficiency
Energy-efficient Networking at Institute IMDEA Networks
D. Antonio Fernández Anta, Senior Researcher, Institute IMDEA Networks (  Download presentation 160 Kb )
TELVENT Energía
D. Francisco Romero, Director for Business Development (  Download presentation 1.757 Kb )
INDRA
Dña. Marta Arias, General Manager for Energy Efficiency (  Download presentation 538 Kb )

The talk consists of two parts. The first part will present an overview on the current research activities of iNEXT (Centre for Innovation in IT applications and Services) at the University of Technology, Sydney. This includes a brief description of our Sensor Grid for Assistive Healthcare project.

Improving the energy-efficiency of core routers is important for ISPs and equipment vendors alike. We tackle this problem by focusing on packet buffers in backbone router line-cards. We broadly classify the talk into two parts - an evolutionary approach and a clean-slate design. In the former, we propose a simple power saving mechanism that turns buffers on/off to save energy. Our scheme can be incrementally deployed today and requires minimal changes to existing line-card design.

BitTorrent is the most popular P2P content delivery appli-cation where individual users share various type of content with tens of thousands of other users. The growing popular-ity of BitTorrent is primarily due to the availability of valuable content without any cost for the consumers. However, apart from required resources, publishing (sharing) valuable (and often copyrighted) content has serious legal implica-tions for users who publish the material (or publishers). This raises a question that whether (at least major) content publishers behave in an altruistic fashion or have other incentives such as financial. In this study, we identify the content publishers of more than 55K torrents in two major BitTorrent portals and examine their behavior. We demonstrate that a small fraction of publishers is responsible for 67% of the published content and 75% of the downloads. Our investigations reveal that these major publishers respond to two dif-ferent profiles. On the one hand, antipiracy agencies and ma-licious publishers publish a large amount of fake files to protect copyrighted content and spread malware respectively. On the other hand, content publishing in BitTorrent is largely driven by companies with financial incentives. Therefore, if these companies lose their interest or are unable to publish content, BitTorrent traffic/portals may disappear or at least their associated traffic will be significantly reduced.

Rade Stanojevic obtained his B.Sc. in Mathematics from University of Nis, Serbia and a Ph.D. from Hamilton Institute, NUIM, Ireland. His current research interests span performance evaluation, network economics and energy aware computing. His work on decentralized cloud control has been awarded the ACM SIGMETRICS 2008 Kenneth C. Sevcik Outstanding Student Paper Award and the IEEE IWQoS 2009 Best Paper Award. Since fall 2010 he is a staff researcher in the IMDEA Networks Institute, Madrid. Prior to that he was a post-doc with Telefonica Research, Barcelona.

Since its inception in 2005, YouTube has seen explosive growth in its popularity; today it is indisputably the world’s largest video sharing site. Given the number of viewers and the accompanying traffic volume, its geographical span and scale of operations, the design of YouTube’s content delivery infrastructure is a highly challenging engineering task.

This talk will introduce P2PSIP (Peer-to-peer Session Initiation Protocol) technologies, including the most common protocols and algorithms. The talk will also discuss the performance of these technologies in different network settings and the tradeoffs associated with deploying P2PSIP systems. Additionally, the talk will cover issues related to security and NAT traversal.

Content-Centric Networking (CCN) is a clean-slate proposal to replace/enrich the current Internet. CCN is focused on content instead of machines, so users can request a given content by sending Interest messages with the name of the content. CCN routers have three main data structures: a FIB mapping content names to outbound faces, a Content Store to cache data packets and a pending Interest table (PIT) to forward incoming packets towards the consumers, using a breadcrumb mechanism. Security is part of the proposal, as all data packets are signed by its publisher.