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Displaying 1-16 out of 16 total
Perceived Consistency
Found in: Computer Systems and Applications, ACS/IEEE International Conference on
By Carsten Griwodz, Michael Liepert, Abdulmotaleb El Saddik, Giwon On, Michael Zink, Ralf Steinmetz
Issue Date:June 2001
pp. 0260
Abstract: Quality of service guarantees for multimedia communication systems have been considered on several abstraction levels. In the multimedia networking field it is typical to identify the minimal QoS requirements of an application to save resources b...
Replication for a Distributed Multimedia System
Found in: Parallel and Distributed Systems, International Conference on
By Giwon On, Michael Zink, Michael Liepert, Carsten Griwodz, Jens B. Schmitt, Ralf Steinmetz
Issue Date:June 2001
pp. 0037
Abstract: Replicating data and services at multiple networked computers increases the service availability of distributed systems. This paper presents the design and implementation architecture of a replication mechanism for a distributed multimedia system...
The Cyber-Physical Marketplace: A Framework for Large-Scale Horizontal Integration in Distributed Cyber-Physical Systems
Found in: 2013 IEEE 33rd International Conference on Distributed Computing Systems Workshops (ICDCSW)
By Tilman Wolf,Michael Zink,Anna Nagurney
Issue Date:July 2013
pp. 296-302
Cyber-Physical Systems (CPS) represent the technical foundation to solve some of the most important societal and environmental problems. Traditionally, CPS have been considered tightly integrated solutions that are aimed at specific application domains. Mo...
Network capabilities of cloud services for a real time scientific application
Found in: 2012 IEEE 37th Conference on Local Computer Networks (LCN 2012)
By Dilip Kumar Krishnappa,Eric Lyons,David Irwin,Michael Zink
Issue Date:October 2012
pp. 487-495
Dedicating high-end servers for executing scientific applications that run intermittently, such as severe weather detection or generalized weather forecasting, wastes resources. While the Infrastructure-as-a-Service (IaaS) model used by today's cloud platf...
Planet YouTube: Global, measurement-based performance analysis of viewer;'s experience watching user generated videos
Found in: Local Computer Networks, Annual IEEE Conference on
By Dilip Kumar Krishnappa,Samamon Khemmarat,Michael Zink
Issue Date:October 2011
pp. 948-956
User experience is a very important aspect of user-generated video streaming service such as YouTube. In this paper, we perform a global study of user experience for YouTube videos using PlanetLab nodes from all over the world. We analyze the number of pau...
A Distributed Algorithm for Joint Sensing and Routing in Wireless Networks with Non-Steerable Directional Antennas
Found in: Network Protocols, IEEE International Conference on
By Chun Zhang, Jim Kurose, Yong Liu, Don Towsley, Michael Zink
Issue Date:November 2006
pp. 218-227
In many energy-rechargeable wireless sensor net-works, sensor nodes must both sense data from the environment, and cooperatively forward sensed data to data sinks. Both data sensing and data forwarding (including data transmission and reception) consume en...
P2P Streaming using Multiple Description Coded Video
Found in: EUROMICRO Conference
By Michael Zink, Andreas Mauthe
Issue Date:September 2004
pp. 240-247
Today's peer-to-peer applications benefit from the fact that many users offer their resources (mostly in form of files). Those resources are mainly connected via relatively low-bandwidth, asymmetric access networks (such as ADSL or cable modems), which mak...
Introduction from Session Chair
Found in: EUROMICRO Conference
By Michael Zink
Issue Date:September 2003
pp. 198
No summary available.
Polishing: A Technique to Reduce Variations in Cached Layer-Encoded Video
Found in: EUROMICRO Conference
By Michael Zink, Oliver Heckmann, Jens Schmitt, Andreas Mauthe, Ralf Steinmetz
Issue Date:September 2003
pp. 249
In this paper we introduce a technique called polishing to reduce variations in cached layer-encoded video by identifying those segments which can be removed without diminishing the perceptual quality. In fact, polishing even allows to increase the percept...
KOM Player - A Platform for Experimental VoD Research
Found in: Computers and Communications, IEEE Symposium on
By Michael Zink, Carsten Griwodz, Ralf Steinmetz
Issue Date:July 2001
pp. 0370
Abstract: In contrast to audio which is often streamed as complete music titles or even as a life feed from a radio station, video in today's Internet is almost only available as small clips and pre-generated programs. Although some of the problems concern...
LC-RTP (Loss Collection RTP): Reliability for Video Caching in the Internet
Found in: Parallel and Distributed Systems, International Conference on
By Michael Zink, Alex Jonas, Carsten Griwodz, Ralf Steinmetz
Issue Date:July 2000
pp. 281
The increasing amount of audio-visual (AV) content that is offered by web sites leads to a network bandwidth and storage capacity problem. Caching is one of the techniques that can ease this problem. However, even in a caching system the distribution of da...
DASHing YouTube: An analysis of using DASH in YouTube video service
Found in: 2013 IEEE 38th Conference on Local Computer Networks (LCN 2013)
By Dilip Kumar Krishnappa,Divyashri Bhat,Michael Zink
Issue Date:October 2013
pp. 407-415
Dynamic Adaptive Streaming over HTTP (DASH) is a new streaming standard which adaptively streams video based on the link bandwidth between server and client. DASH encoded videos are chunked in small segments and each segment can have different representati...
Position paper: Internet VoD cache server design
Found in: Proceedings of the seventh ACM international conference on Multimedia (Part 2) (MULTIMEDIA '99)
By Carsten Griwodz, Michael Liepert, Michael Zink, Ralf Steinmetz
Issue Date:October 1999
pp. 123-126
In this paper we propose and implement an efficient scheme for automatically detecting the abrupt shot changes in a video stream compressed in MPEG video format. In the proposed scheme, the type of each macroblock in a B-frame is compared with the type of ...
GreenCache: augmenting off-the-grid cellular towers with multimedia caches
Found in: Proceedings of the 4th ACM Multimedia Systems Conference (MMSys '13)
By David Irwin, Dilip Kumar Krishnappa, Michael Zink, Navin Sharma, Prashant Shenoy
Issue Date:February 2013
pp. 271-280
The growth of smartphones combined with advances in mobile networking have revolutionized the way people consume multimedia data. In particular, users in developing countries primarily rely on smartphones since they often do not have access to more powerfu...
Cache-centric video recommendation: an approach to improve the efficiency of YouTube caches
Found in: Proceedings of the 4th ACM Multimedia Systems Conference (MMSys '13)
By Carsten Griwodz, Dilip Kumar Krishnappa, Michael Zink, Pål Halvorsen
Issue Date:February 2013
pp. 261-270
In this paper, we take advantage of the user behavior of requesting videos from the related list provided by YouTube and the user behavior of requesting videos from the top of this related list to improve the performance of YouTube's caches. We recommend a...
Associating network flows with user and application information
Found in: Proceedings of the 2000 ACM workshops on Multimedia (MULTIMEDIA '00)
By Carsten Griwodz, Michael Zink, Ralf Ackermann, Ralf Steinmetz, Utz Roedig
Issue Date:October 2000
pp. 149-152
The concept of authenticating users e.g. by means of a login process is very well established and there is no doubt that it is absolutely necessary and helpful in a multiuser environment. Unfortunately specific information about a user originating a data s...