10 Search Results for "Pras, Aiko"

Document
DOI: 10.4230/DagRep.7.3.33
Using Networks to Teach About Networks (Dagstuhl Seminar 17112)

Authors: Timur Friedman, Aiko Pras, and Jürgen Schönwälder

Published in: Dagstuhl Reports, Volume 7, Issue 3 (2017)

Abstract
his report documents the program and the outcomes of Dagstuhl Seminar 17112 "Using Networks to Teach About Networks". The seminar brought together people with mixed backgrounds in order to exchange experiences gained with different approaches to teach computer networking. Despite the obvious question of what to teach, special attention was given to the questions of how to teach and which tools and infrastructures can be used effectively today for teaching purposes.
Cite as

Timur Friedman, Aiko Pras, and Jürgen Schönwälder. Using Networks to Teach About Networks (Dagstuhl Seminar 17112). In Dagstuhl Reports, Volume 7, Issue 3, pp. 33-44, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@Article{friedman_et_al:DagRep.7.3.33,
  author =	{Friedman, Timur and Pras, Aiko and Sch\"{o}nw\"{a}lder, J\"{u}rgen},
  title =	{{Using Networks to Teach About Networks (Dagstuhl Seminar 17112)}},
  pages =	{33--44},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2017},
  volume =	{7},
  number =	{3},
  editor =	{Friedman, Timur and Pras, Aiko and Sch\"{o}nw\"{a}lder, J\"{u}rgen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.7.3.33},
  URN =		{urn:nbn:de:0030-drops-73608},
  doi =		{10.4230/DagRep.7.3.33},
  annote =	{Keywords: computer networks, Internet, education, peer instruction, online learning, educational technologies}
}
Document
DOI: 10.4230/DagRep.4.1.170
Ethics in Data Sharing (Dagstuhl Seminar 14052)

Authors: Julie E. Cohen, Sven Dietrich, Aiko Pras, Lenore D. Zuck, and Hildebrand Mireille

Published in: Dagstuhl Reports, Volume 4, Issue 1 (2014)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 14052 "Ethics in Data Sharing". The seminar brought together computer scientists, an ethicist and legal scholars to discuss the topic of "ethics in data sharing."
Cite as

Julie E. Cohen, Sven Dietrich, Aiko Pras, Lenore D. Zuck, and Hildebrand Mireille. Ethics in Data Sharing (Dagstuhl Seminar 14052). In Dagstuhl Reports, Volume 4, Issue 1, pp. 170-183, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)

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@Article{cohen_et_al:DagRep.4.1.170,
  author =	{Cohen, Julie E. and Dietrich, Sven and Pras, Aiko and Zuck, Lenore D. and Hildebrand Mireille},
  title =	{{Ethics in Data Sharing (Dagstuhl Seminar 14052)}},
  pages =	{170--183},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2014},
  volume =	{4},
  number =	{1},
  editor =	{Cohen, Julie E. and Dietrich, Sven and Pras, Aiko and Zuck, Lenore D. and Hildebrand Mireille},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.4.1.170},
  URN =		{urn:nbn:de:0030-drops-45418},
  doi =		{10.4230/DagRep.4.1.170},
  annote =	{Keywords: Ethics, Data Sharing Practices, Data Dissemination, Ethics across borders, Anonymization, Sanitization}
}
Document
DOI: 10.4230/DagRep.1.1.102
Learning from the Past: Implications for the Future Internet and its Management? (Dagstuhl Seminar 11042)

Authors: Gabi Dreo Rodosek, Aiko Pras, Henning Schulzrinne, and Burkhard Stiller

Published in: Dagstuhl Reports, Volume 1, Issue 1 (2011)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 11042 ``Learning from the Past: Implications for the Future Internet and its Management?''. The discussion centered around the question if by analyzing the past - especially why certain technologies did or did not succeed - it is possible to reason about the Future Internet, the challenges and especially the management aspect. Valuable observations have been identified during the discussions. A scientific publication that summarizes the key findings is under preparation.
Cite as

Gabi Dreo Rodosek, Aiko Pras, Henning Schulzrinne, and Burkhard Stiller. Learning from the Past: Implications for the Future Internet and its Management? (Dagstuhl Seminar 11042). In Dagstuhl Reports, Volume 1, Issue 1, pp. 102-107, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@Article{dreorodosek_et_al:DagRep.1.1.102,
  author =	{Dreo Rodosek, Gabi and Pras, Aiko and Schulzrinne, Henning and Stiller, Burkhard},
  title =	{{Learning from the Past: Implications for the Future Internet and its Management? (Dagstuhl Seminar 11042)}},
  pages =	{102--107},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2011},
  volume =	{1},
  number =	{1},
  editor =	{Dreo Rodosek, Gabi and Pras, Aiko and Schulzrinne, Henning and Stiller, Burkhard},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.1.1.102},
  URN =		{urn:nbn:de:0030-drops-31491},
  doi =		{10.4230/DagRep.1.1.102},
  annote =	{Keywords: Future Internet, Management, Lessons learnt}
}
Document
DOI: 10.4230/DagSemProc.09052.1
09052 Report – Management of the Future Internet

Authors: Olivier Festor, Aiko Pras, and Burkhard Stiller

Published in: Dagstuhl Seminar Proceedings, Volume 9052, Management of the Future Internet (2010)

Abstract
From January 27 to January 30, 2009 the Dagstuhl Seminar No. 09052 on "Management of the Future Internet" was held in Schloß Dagstuhl, Leibniz Center for Informatics. During the seminar, several participants presented their current research and ongoing work, and open problems were discussed. Abstracts of these presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this report. The first section describes the overall seminar goals and topics. The second section lists available abstracts. And the third section refers to a full paper in the appendix, which was directly written based on one of the discussions taking place.
Cite as

Olivier Festor, Aiko Pras, and Burkhard Stiller. 09052 Report – Management of the Future Internet. In Management of the Future Internet. Dagstuhl Seminar Proceedings, Volume 9052, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{festor_et_al:DagSemProc.09052.1,
  author =	{Festor, Olivier and Pras, Aiko and Stiller, Burkhard},
  title =	{{09052 Report – Management of the Future Internet}},
  booktitle =	{Management of the Future Internet},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9052},
  editor =	{Olivier Festor and Aiko Pras and Burkhard Stiller},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09052.1},
  URN =		{urn:nbn:de:0030-drops-25308},
  doi =		{10.4230/DagSemProc.09052.1},
  annote =	{Keywords: Networks, future internet, network management}
}
Document
DOI: 10.4230/DagSemProc.09211.1
09211 Abstracts Collection – Visualization and Monitoring of Network Traffic

Authors: Daniel A. Keim, Aiko Pras, Jürgen Schönwälder, and Pak Chung Wong

Published in: Dagstuhl Seminar Proceedings, Volume 9211, Visualization and Monitoring of Network Traffic (2009)

Abstract
From 17.05. to 20.05.2009, the Dagstuhl Seminar 09211 ``Visualization and Monitoring of Network Traffic '' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Daniel A. Keim, Aiko Pras, Jürgen Schönwälder, and Pak Chung Wong. 09211 Abstracts Collection – Visualization and Monitoring of Network Traffic. In Visualization and Monitoring of Network Traffic. Dagstuhl Seminar Proceedings, Volume 9211, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{keim_et_al:DagSemProc.09211.1,
  author =	{Keim, Daniel A. and Pras, Aiko and Sch\"{o}nw\"{a}lder, J\"{u}rgen and Wong, Pak Chung},
  title =	{{09211 Abstracts Collection – Visualization and Monitoring of Network Traffic }},
  booktitle =	{Visualization and Monitoring of Network Traffic},
  pages =	{1--8},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9211},
  editor =	{Daniel A. Keim and Aiko Pras and J\"{u}rgen Sch\"{o}nw\"{a}lder and Pak Chung Wong},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09211.1},
  URN =		{urn:nbn:de:0030-drops-21586},
  doi =		{10.4230/DagSemProc.09211.1},
  annote =	{Keywords: Computer Networks, Internet, Monitoring of Networks and Services, Visualization Animation}
}
Document
DOI: 10.4230/DagSemProc.09211.2
09211 Executive Summary – Visualization and Monitoring of Network Traffic

Authors: Daniel A. Keim, Aiko Pras, Jürgen Schönwälder, Pak Chung Wong, and Florian Mansmann

Published in: Dagstuhl Seminar Proceedings, Volume 9211, Visualization and Monitoring of Network Traffic (2009)

Abstract
The seamless operation of the Internet requires being able to monitor and visualize the actual behaviour of the network. Today, IP network operators usually collect network flow statistics from critical points of their network infrastructure. Flows aggregate packets that share common properties. Flow records are stored and analyzed to extract accounting information and increasingly to identify and isolate network problems or security incidents. While network problems or attacks significantly changing traffic patterns are relatively easy to identify, it tends to be much more challenging to identify creeping changes or attacks and faults that manifest themselves only by very careful analysis of initially seemingly unrelated traffic pattern and their changes. There are currently no deployable good solutions and research in this area is just starting. In addition, the large volume of flow data on high capacity networks and exchange points requires to move to probabilistic sampling techniques, which require new analysis techniques to calculate and also visualize the uncertainty attached to data sets.
Cite as

Daniel A. Keim, Aiko Pras, Jürgen Schönwälder, Pak Chung Wong, and Florian Mansmann. 09211 Executive Summary – Visualization and Monitoring of Network Traffic. In Visualization and Monitoring of Network Traffic. Dagstuhl Seminar Proceedings, Volume 9211, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{keim_et_al:DagSemProc.09211.2,
  author =	{Keim, Daniel A. and Pras, Aiko and Sch\"{o}nw\"{a}lder, J\"{u}rgen and Wong, Pak Chung and Mansmann, Florian},
  title =	{{09211 Executive Summary – Visualization and Monitoring of Network Traffic}},
  booktitle =	{Visualization and Monitoring of Network Traffic},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9211},
  editor =	{Daniel A. Keim and Aiko Pras and J\"{u}rgen Sch\"{o}nw\"{a}lder and Pak Chung Wong},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09211.2},
  URN =		{urn:nbn:de:0030-drops-21574},
  doi =		{10.4230/DagSemProc.09211.2},
  annote =	{Keywords: Computer Networks, Internet, Monitoring of Networks and Services, Visualization Animation}
}
Document
DOI: 10.4230/DagSemProc.09211.3
Accounting system for heterogeneous IP-networks (IPNA) implemented at Kaiserslautern University

Authors: Brian Worden, Claudia Baltes, Inga Scheler, Paul Müller, and Hans Hagen

Published in: Dagstuhl Seminar Proceedings, Volume 9211, Visualization and Monitoring of Network Traffic (2009)

Abstract
This paper describes an accounting system (IPNA) for heterogenous IP-networks with arbitrary topologies implemented at the university of Kaiserslautern. The produced data volume per unit is numerated. The collected data is stored in a database and offers different analysis possibilities. The results can be visualized and adapted to the users requirements. The main effort was to build a data traffic quota system for single units as well as groups of devices that also report exceeded quotas. The system itself only observes the network traffic. Interfaces offer tools to interact with the network. The IPNA consists of a back-end for the data- acquisition and -preparation and a front-end for configuration and visualization tasks including quality control.
Cite as

Brian Worden, Claudia Baltes, Inga Scheler, Paul Müller, and Hans Hagen. Accounting system for heterogeneous IP-networks (IPNA) implemented at Kaiserslautern University. In Visualization and Monitoring of Network Traffic. Dagstuhl Seminar Proceedings, Volume 9211, pp. 1-7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{worden_et_al:DagSemProc.09211.3,
  author =	{Worden, Brian and Baltes, Claudia and Scheler, Inga and M\"{u}ller, Paul and Hagen, Hans},
  title =	{{Accounting system for heterogeneous IP-networks (IPNA) implemented at Kaiserslautern University}},
  booktitle =	{Visualization and Monitoring of Network Traffic},
  pages =	{1--7},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9211},
  editor =	{Daniel A. Keim and Aiko Pras and J\"{u}rgen Sch\"{o}nw\"{a}lder and Pak Chung Wong},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09211.3},
  URN =		{urn:nbn:de:0030-drops-21557},
  doi =		{10.4230/DagSemProc.09211.3},
  annote =	{Keywords: Accounting system, IP-network, Communication, informa- tion visualization, online quality control}
}
Document
DOI: 10.4230/DagSemProc.09211.4
Comparison of Node-Link and Hierarchical Edge Bundling Layouts: A User Study

Authors: Alexandru Telea, Ozan Ersoy, Hessel Hoogendorp, and Dennie Reniers

Published in: Dagstuhl Seminar Proceedings, Volume 9211, Visualization and Monitoring of Network Traffic (2009)

Abstract
Visually investigating large network-like structures is a challenging task. Several approaches have been proposed in the past: node-link diagrams, adjacency matrices, and, more recently, hierarchical edge bundles. We present a recent experiment that compares the effectiveness of the classical node-link diagrams with the more recent hierarchical bundled edges. The users involved several computer science practitioners, the data ranged from graphs of several hundreds to several tens of hundreds of nodes, the tasks involved answering a number of structural overview as well as detailed questions involved system dependencies.
Cite as

Alexandru Telea, Ozan Ersoy, Hessel Hoogendorp, and Dennie Reniers. Comparison of Node-Link and Hierarchical Edge Bundling Layouts: A User Study. In Visualization and Monitoring of Network Traffic. Dagstuhl Seminar Proceedings, Volume 9211, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{telea_et_al:DagSemProc.09211.4,
  author =	{Telea, Alexandru and Ersoy, Ozan and Hoogendorp, Hessel and Reniers, Dennie},
  title =	{{Comparison of Node-Link and Hierarchical Edge Bundling Layouts: A User Study}},
  booktitle =	{Visualization and Monitoring of Network Traffic},
  pages =	{1--12},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9211},
  editor =	{Daniel A. Keim and Aiko Pras and J\"{u}rgen Sch\"{o}nw\"{a}lder and Pak Chung Wong},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09211.4},
  URN =		{urn:nbn:de:0030-drops-21542},
  doi =		{10.4230/DagSemProc.09211.4},
  annote =	{Keywords: Graph visualization, user studies, software visualization, call graphs}
}
Document
DOI: 10.4230/DagSemProc.09211.5
Interactive Exploration of the Network Behavior of Personal Machines

Authors: Mike Sips, Sascha Simon, and John Gerth

Published in: Dagstuhl Seminar Proceedings, Volume 9211, Visualization and Monitoring of Network Traffic (2009)

Abstract
Personal machines are often the weakest points within a large network. Although they run an ever-increasing number of network services, these machines are often controlled by users who are unaware of security threats. Thus, a well-informed attacker can, with modest effort, identify and gain control over personal machines. However, system administrators need to know the tools and techniques used for attacks while simultaneously needing to invest huge analytical efforts to detect malicious behavior in the vast volumes of network traffic. In our research project we investigate the idea that an understanding of the regular behavior of personal machines can improve the chance of detecting the point in time when a machine shows malicious behavior. We propose a visual exploration system based on a data abstraction layer and temporal visual representations of the network traffic. The data abstraction layer enables an interactive change in the level of detail of the network traffic while temporal visualizations help system administrators to detect unexpected network traffic. In the next phase of this project, we will conduct experiments to get a good feel about the limits of our system in detecting malicious behavior in real-world scenarios.
Cite as

Mike Sips, Sascha Simon, and John Gerth. Interactive Exploration of the Network Behavior of Personal Machines. In Visualization and Monitoring of Network Traffic. Dagstuhl Seminar Proceedings, Volume 9211, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)

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@InProceedings{sips_et_al:DagSemProc.09211.5,
  author =	{Sips, Mike and Simon, Sascha and Gerth, John},
  title =	{{Interactive Exploration of the Network Behavior of Personal Machines}},
  booktitle =	{Visualization and Monitoring of Network Traffic},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9211},
  editor =	{Daniel A. Keim and Aiko Pras and J\"{u}rgen Sch\"{o}nw\"{a}lder and Pak Chung Wong},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09211.5},
  URN =		{urn:nbn:de:0030-drops-21565},
  doi =		{10.4230/DagSemProc.09211.5},
  annote =	{Keywords: Visualization, Communication Patterns, Data Abstraction, Personal Machines}
}
Document
DOI: 10.4230/DagSemProc.08043.1
08043 Summary – Perspectives Workshop: Telecommunication Economics

Authors: Heikki Hammainen, Hong Chen, Aiko Pras, George Huitema, Martin Waldburger, David Hausheer, Panayotis Antoniadis, Peter Reichl, Jerzy Kubasik, and Burkhard Stiller

Published in: Dagstuhl Seminar Proceedings, Volume 8043, Perspectives Workshop: Telecommunication Economics (2008)

Abstract
The telecommunications sector and the Internet section of Internet Service Providers (ISP) have become a dynamic key area for the economic development of industrialized nations in the world. It is in constant evolution. Because of intense competition, telecommunications companies and ISPs are forced to diversify their offers and thus to propose an increasing number of services. However, economic analysis often ignores important technical aspects of telecommunications and is not aware of new developments. Engineering models often ignore economic factors. Thus, the design and deployment of future networks that incorporate new services are subject to uncertainties such as equipment and capacity prices (due to technological innovation), demand and supply for services (due to competition). Seeing leading researchers bringing together with various backgrounds, all working on innovative aspects of technical, techno-economic, social, and regulatory issues, lead to the following four main areas that have been – partially – tackled in an integrated manner: - Architectural side, - Social side, - Economic and business side, and - Regulatory side.
Cite as

Heikki Hammainen, Hong Chen, Aiko Pras, George Huitema, Martin Waldburger, David Hausheer, Panayotis Antoniadis, Peter Reichl, Jerzy Kubasik, and Burkhard Stiller. 08043 Summary – Perspectives Workshop: Telecommunication Economics. In Perspectives Workshop: Telecommunication Economics. Dagstuhl Seminar Proceedings, Volume 8043, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2008)

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@InProceedings{hammainen_et_al:DagSemProc.08043.1,
  author =	{Hammainen, Heikki and Chen, Hong and Pras, Aiko and Huitema, George and Waldburger, Martin and Hausheer, David and Antoniadis, Panayotis and Reichl, Peter and Kubasik, Jerzy and Stiller, Burkhard},
  title =	{{08043 Summary – Perspectives Workshop: Telecommunication Economics}},
  booktitle =	{Perspectives Workshop: Telecommunication Economics},
  pages =	{1--8},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2008},
  volume =	{8043},
  editor =	{Burkhard Stiller},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.08043.1},
  URN =		{urn:nbn:de:0030-drops-14900},
  doi =		{10.4230/DagSemProc.08043.1},
  annote =	{Keywords: Telecommunication and Internet Services, Tariffing and Pricing, Personalization, Incentives, Value Chain, Accounting, Contracts and Legal Domains, Quality-of-Experience, Dynamic Business, and Competition}
}
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