Searched for: subject%3A%22PNS%255C%2B%255C-%255C%2BPerformance%255C%2Bof%255C%2BNetworks%255C%2B%2526%255C%2BServices%22
(61 - 80 of 101)
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Boertjes, E.M. (author), Gerrits, B.M. (author), Kooij, R.E. (author), van Maanen, P.P. (author), Raaijmakers, S.A. (author), de Wit, J.J. (author)In this paper we describe the development of a model for measuring consumer trust in certain topics on the basis of social media. Specifically, we propose a model for trust that takes into account both textually expressed sentiment and source authority, and illustrate it on a specific case: the iCloud cloud computing service of Apple and its...conference paper 2012
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Croes, N.N. (author), Phillipson, F (author), Schreuder, M.H. (author)A first step in congestion management is making sure that the average production and consumption per time unit over time match as well as possible, we call this tactical congestion management. The main question in this paper is: what is an optimal mix of DGs such that electricity loss is minimizedconference paper 2012
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- Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek (author), Beerends, J.G. (author), van Vugt, J.M. (author) patent 2012
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Zivkovic, M. (author), van den Berg, J.L. (author)In this paper we consider the runtime service adaptation mechanism for service compositions that is based on conditional retries. A single retry may be issued while a concrete service within composition is executed. This retry could either invoke the same concrete service or a functionally equivalent service implementing the same task. We...conference paper 2012
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Swinkels, R.H.A. (author)This study was concerned with the meta-Energy Mediation System (meta-EMS) problem. We consider several companies from the horticulture industry, for which we have to match supply and demand of different commodities a few days ahead. We have introduced the problem and considered the relevant literature for the current subject. The problem is...doctoral thesis 2012
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Leenman, T.S. (author)In this thesis steps are described to determine the locations of new wind mills which minimize energy loss on the Dutch High Voltage power grid. A vindication of the used power grid model is provided; the simulation procedure for stochastic wind power is described; and the required mathematical optimization models are formally derived as well as...doctoral thesis 2012
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Paassen R.J.G. van, (author), Hut, D.H. (author), Boltjes, B. (author), Trichias, K. (author)The ‘Critical ICT Infrastructures’ program managed by prof. dr. ir. Rob Kooij is a strategic research program that aims to improve the quality of ICT infrastructures. The red line for all projects within this program is quality and dependability for all information and communication technology. Especially for the Dutch national vital...report 2012
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Marban, S. (author), Meulenhoff, P.J. (author), van der Vliet-Hameeteman, C. (author)Zonder handelen, aanpassing van technologie of gedrag, is de algemene verwachting dat het energieverbruik van de ICT sector hard stijgt, harder dan andere sectoren. Dat kan in de toekomst mogelijk een probleem worden [1]. De Europese Unie heeft de ambitie om voor 2050 de uitstoot van broeikasgassen te reduceren met 80%, waarbij 1990 geldt als...report 2012
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Kooij, R.E. (author)In de afgelopen jaren verschijnen er steeds vaker voorbeelden in de media van storingen en kwetsbaarheden van (mobiele) communicatienetwerken. In dit artikel schetsen we enkele ontwikkelingen die het een uitdaging maken onze communicatie netwerken voldoende beschikbaar en robuust te maken. Aan de hand van een rekenvoorbeeld laten we zien hoe...article 2012
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Ellens, W. (author), Zivkovic, M. (author), Akkerboom, J.D. (author), Litjens, R. (author), van den Berg, J.L. (author)In this paper we consider the general problem of resource provisioning within cloud computing. We analyze the problem of how to allocate resources to different clients such that the service level agreements (SLAs) for all of these clients are met. A model with multiple service request classes generated by different clients is proposed to...conference paper 2012
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Monsuur, H. (author), Kooij R.E., (author), van Mieghem, P. (author)The security environment is rapidly changing. Due to increasing dependency on complex critical communication and information systems, society as a whole, but defence organisations in particular, have to rethink, redesign and adapt their Defences to be able to confront the challenges of cyberwarfare and crime. The literature abounds with examples...bookPart 2012
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Litjens, R. (author), Hendriks, R.W. (author)Mobile network operators are currently preparing the introduction of QoS differentiation mechanisms in their 3G networks, as a means to support service-specific quality requirements, to enable the offering of distinct subscription forms and/or to enhance the resource efficiency and hence network capacity. In this paper we quantify the attainable...conference paper 2011
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Zivkovic, M. (author), Bosman, J.W. (author), van den Berg, J.L. (author), van der Mei, R.D. (author), Meeuwissen, H.B. (author), Nunez-Queija, R. (author)In this paper we investigate sequential decision mechanisms for composite web services. After executing each sub-service within a sequential workflow, decisions are made whether to terminate or continue the execution of the workflow. These decisions are based on observed response times, expected rewards, and typical Service Level Agreement...conference paper 2011
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Bastiaansen, H.J.M. (author), Joosten, H.J.M. (author), Meeuwissen, H.B. (author), Roijers, F. (author)ICT-ketens worden enerzijds steeds complexer en anderzijds van steed vitaler belang voor de maatschappij en voor organisaties. Daarbij neemt ook het belang van robuustheid van ICT-ketens en de beheersing daarvan toe. De auteurs beschrijven een nieuwe methodiek waarmee de mate van beheersing van de robuustheid van ICT-ketens kan worden vastgesteld.article 2011
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Ebem, D.U. (author), Beerends, J.G. (author), van Vugt, J. (author), Schmidmer, C. (author), Kooij, R.E. (author), Uguru, J.O. (author)The extent to which the modeling used in objective speech quality algorithms depends on the cultural background of listeners as well as on the language characteristics using American English and Igbo, an African tone language is investigated. Two different approaches were used in order to separate behavioral aspects from speech signal aspects....article 2011
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Schmelz, L.C. (author), Amirijoo, M. (author), Eisenblaetter, A. (author), Litjens, R. (author), Neuland, M. (author), Turk, J. (author)Self-organising Networks (SON) as introduced for 3G Long Term Evolution (LTE) will typically involve several different SON functions. These functions are not necessarily aware of each other and may have complex relations and interdependencies, for example, conflicting parameter settings, depending on their design and approach. Coordination of...conference paper 2011
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Brown, J.I. (author), Koç, Y. (author), Kooij, R.E. (author)In this paper we study all-terminal reliability polynomials of networks having the same number of nodes and the same number of links. First we show that the smallest possible size for a pair of networks that allows for two crossings of their reliability polynomials have seven nodes and fifteen edges. Then we propose a construction of pairs of...conference paper 2011
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Dimitrova, D.C. (author), van den Berg, J.L. (author), Heijenk, G. (author), Litjens, R. (author)Long Term Evolution (LTE) is a cellular technology foreseen to extend the capacity and improve the performance of current 3G cellular networks. A key mechanism in the LTE traffic handling is the packet scheduler, which is in charge of allocating resources to active flows in both the frequency and time dimension. In this paper we present a...conference paper 2011
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Doorn, J.H. (author), Hoefsloot, P.Ch. (author), Passchier, I. (author), Roijers, F. (author), in 't Velt, R. (author), Koenders, E. (author)In the SPITS project, an ITS Gateway has been developed, implementing the 802.11p protocol. Performance measurements have been performed to determine the effective communication distance by determining the packet delivery ratio. Also correlations between lost packets are determined. These results have been used in a ad-hoc network simulator to...conference paper 2011
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Amirijoo, M. (author), Jorguseski, L. (author), Litjens, R. (author), Nascimento, R. (author)Cell outage management is a self-healing functionality in future mobile cellular networks, aiming to automatically detect cell or site level outages (cell outage detection) as well as to mitigate as much as possible the caused degradation of coverage, capacity and/or service quality (cell outage compensation). Cell outage compensation has a...conference paper 2011
Searched for: subject%3A%22PNS%255C%2B%255C-%255C%2BPerformance%255C%2Bof%255C%2BNetworks%255C%2B%2526%255C%2BServices%22
(61 - 80 of 101)