document

Het Nederlands elftal als complex netwerk

Kooij, R.E. (author), Jamakovic, A. (author), Van Kesteren, F. (author), De Koning, T.C.M. (author), Theisler, I.B. (author), Veldhoven, P. (author)

In de zomer van 2008, tijdens het Europees Kampioenschap voetbal in Zwitserland en Oostenrijk, zullen weer miljoenen mensen de verrichtingen van het Nederlands elftal op de voet volgen. Ondanks het feit dat voetbal razend populair is, bestaat er vanuit de wetenschappelijke wereld relatief weinig interesse voor voetbal. In dit artikel bestuderen...

journal article

document

Three-dimensional viscous flow structures from bifurcation of a degenerate singularity with three zero eigenvalues

Kooij, R.E. (author), Bakker, P.G. (author)

report 1989

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Limit cycles in polynomial systems

Kooij, R.E. (author)

doctoral thesis 1993

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Perceived quality of channel zapping

Kooij, R.E. (author), Ahmed, O.K. (author), Brunnström, K. (author)

conference paper 2006

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SLA-calculus for TCP-based applications in a multi-domain environment

Kooij, R.E. (author), Van Der Mei, R.D. (author), Van Den Berg, J.L. (author), Yang, R. (author)

conference paper 2006

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Modeling ping times in first person shooter games

Degrande, N. (author), De Vleeschauer, D. (author), Kooij, R.E. (author), Mandjes, M.R.H. (author)

conference paper 2006

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Estimation of Perceived Quality of Service for Applications on IPv6 Network

Zhou, X. (author), Kooij, R.E. (author), Uijterwaal, H. (author), Van Mieghem, P. (author)

conference paper 2006

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Predicting the perceived quality of a First Person Shooter: The Quake IV G-model

Wattimena, A.F. (author), Kooij, R.E. (author), Van Vugt, J.M. (author), Ahmed, O.K. (author)

conference paper 2006

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Estimation of Voice over IP Quality in the Netherlands

Zhou, X. (author), Muller, F. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

conference paper 2006

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Robustness of networks against viruses: The role of the spectral radius

Jamakovic, A. (author), Kooij, R.E. (author), Van Mieghem, P. (author), Van Dam, E.R. (author)

conference paper 2006

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Modeling Ping Times in First Person Shooter Games

Degrande, N. (author), De Vleeschauer, D. (author), Kooij, R.E. (author), Mandjes, M.R.H. (author)

In First Person Shooter (FPS) games the Round Trip Time (RTT), i.e., the sum of the network delay from client to server and the network delay from server to client, impacts the gamer’s performance considerably. Game client software usually has a built-in process to measure this RTT (also referred to as ping time), and therefore gamers do not...

conference paper 2006

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Quantifying the Quality of Service of Streaming Media in Differentiated Services Networks

Agrawal, D.K. (author), Kleiberg, T. (author), Papp, S. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

conference paper 2007

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On the availability of networks

Zou, W. (author), Janic, M. (author), Kooij, R.E. (author), Kuipers, F.A. (author)

conference paper 2007

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Virus spread in complete bi­partite graphs

Omic, J.S. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

conference paper 2007

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Of MOS and men: Bridging the gap between objective and subjective quality measurements in mobile TV

De Koning, T.C.M. (author), Veldhoven, P. (author), Knoche, H. (author), Kooij, R.E. (author)

In this paper we explore the relation between subjective and objective measures of video quality. We computed objective MOS values from video clips using the video quality measuring tool VQM and compared it to the clips’ subjective Acceptability scores. Using the ITU defined mapping (M2G) from MOS to binary Good or Better (GoB) values, we...

conference paper 2007

document

Quantifying the Quality of Service of Streaming Media in Differentiated Services Networks

Agrawal, D.K. (author), Kleiberg, T. (author), Papp, S. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

Quality of Service (QoS) support in the current internet is indispensable because of QoS-sensitive real-time applications such as Voice-over-IP, IP-TV, video conferencing, online gaming etc. Since the introduction of the Differentiated Services (Diff-Serv) architecture there has been considerable work reported in literature on its performance...

conference paper 2007

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ELASTICITY: Topological Characterization of Robustness in Complex Networks

Sydney, A. (author), Schumm, P. (author), Scoglio, C. (author), Kooij, R.E. (author)

conference paper 2008

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Model validation of channel zapping quality

Kooij, R.E. (author), Nicolai, F. (author), Ahmed, O.K. (author), Brunnström, K. (author)

In an earlier paper we showed, that perceived quality of channel zapping is related to the perceived quality of download time of web browsing, as suggested by ITU-T Rec.G.1030. We showed this by performing subjective tests resulting in an excellent fit with a 0.99 correlation. This was what we call a lean forward experiment and gave the rule of...

conference paper 2009

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Impact of Advertisements during Channel Zapping on Quality of Experience

Godana, B.E. (author), Kooij, R.E. (author), Ahmed, O.K. (author)

Nowadays various digital television services are available. However, the user of these services experiences longer delays than the traditional analog TV while switching from channel to channel. The digital TV operator usually displays a black screen with the channel number during zapping. However, it could be interesting for the TV viewer, if...

conference paper 2009

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Heterogenous protection in regular and complete bi-partite networks

Omic, J.S. (author), Kooij, R.E. (author), Van Mieghem, P. (author)

We examine the influence of heterogeneous curing rates for a SIS model, used for malware spreading on the Internet, information dissemination in unreliable networks, and propagation of failures in networks. The topology structures considered are the regular graph which represents the homogenous network structures and the complete bi-partite...

conference paper 2009