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Rijs, K.J. (author), van der Pas, S. (author), Geuskens, G.A. (author), Cozijnsen, R. (author), Koppes, L.L.J. (author), van der Beek, A.J. (author), Deeg, D.J.H. (author)Objectives We developed a general population job-exposure matrix (GPJEM), including physical and psychosocial demands as well as psychosocial resources, applicable to older and retired workers and evaluated its validity by examining associations with health. Methods Physical and psychosocial work exposures reported by 55–64-year-olds were...article 2013
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Zhang, H. (author), Oostveen, J.C. (author), Litjens, R. (author)In this document, we propose two approaches of obtaining radio distance between data cells (especially inactive ones) and terminal via real-time measurement. One approach is via terminals measurement of downlink beacon signals broadcast by inactive cells, showing their presence in the network. The other approach is via data base stations...report 2012
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Anchora, L. (author), Badia, L. (author), Zhang, H. (author), Fahldieck, T. (author), Zhang, J. (author), Szydełko, M. (author), Schubert, M. (author), Karipidis, E. (author), Haardt, M. (author)In this paper, we focus on next-generation cellular networks and discuss physical resources sharing among the operators. This implies cooperative usage of the available radio frequencies and also infrastructure sharing. In particular, we analyze the spectrum sharing gain achievable at different time scales and the main factors impacting on it....conference paper 2012
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Ding, Y. (author), Nyeng, P. (author), Ostergaard, J. (author), Trong, M.D. (author), Pineda, S. (author), Kok, K. (author), Huitema, G.B. (author), Grande, O.S. (author)This paper provides an overview of the Ecogrid EU project, which is a large-scale demonstration project on the Danish island Bornholm. It provides Europe a fast track evolution towards smart grid dissemination and deployment in the distribution network. Objective of Ecogrid EU is to illustrate that modern information and communication technology...conference paper 2012
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Tarnacki, K.M. (author), Melin, T. (author), Jansen, A.E. (author), van Medevoort, J. (author)In this study two desalination technologies have been compared by means of LCA with the focus on energy supply with a variety of scenarios based on different assumptions. The studied technologies are reverse osmosis and the newly developed technology Memstill where electrical energy demand is reduced by using external thermal energy source and...conference paper 2011
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Monachese, M. (author), Cunningham-Rundles, S. (author), Diaz, M.A. (author), Guerrant, R. (author), Hummelen, R. (author), Kemperman, R. (author), Kerac, M. (author), Kort, R. (author), Merenstein, D. (author), Panigrahi, P. (author), Ramakrishna, B. (author), Safdar, N. (author), Shane, A. (author), Trois, L. (author), Reid, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Infectious disease in the developing world continues to represent one of the greatest challenges facing humanity. Every year over a million children suffer and die from the sequela of enteric infections, and in 2008 was estimated almost 2.7 million (UNAIDS 2009 update) adults and children became infected with human immunodeficiency virus (HIV)....article 2011
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van den Broeck, A. (author), van Ruysseveldt, J. (author), Smulders, P.G.W. (author), de Witte, H. (author)Based on assumptions of the Job Demands-Resources model and the Person-Environment fit literature, the present research conceptualizes an intrinsic relative to an extrinsic work value orientation as a personal resource. We examine whether such an orientation may strengthen the relations of classical job resources (i.e., autonomy and learning...article 2011
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van Ruysseveldt, J. (author), Verboon, P. (author), Smulders, P.G.W. (author)The Job Demands-Resources model predicts that job demands increase and job resources decrease emotional exhaustion in employees. In this study, we investigated one possible mechanism for this, in order to provide a deeper insight into the role of job resources in this energy-depletion process. We assumed that job resources (autonomy and task...article 2011
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Hogema, J.H. (author), Martens, M.H. (author), Ubink, E.M. (author)TNO is developing a Driver Model Library (DML) to provide computational models of driver behaviour and decision making for use as a cross-platform plug-in for traffic simulations. The DML is based on a multi-agent cognitive framework which models the individual driving tasks (such as navigation, overtaking, gap acceptance, etc.) and the...conference paper 2011
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Sas, B. (author), Spaey, K. (author), Balan, I. (author), Zetterberg, K. (author), Litjens, R. (author)In mobile cellular networks the handover (HO) algorithm is responsible for determining when calls of users that are moving from one cell to another are handed over from the former to the latter. The admission control (AC) algorithm, which is the algorithm that decides whether new (fresh or HO) calls that enter a cell are allowed to the cell or...conference paper 2011
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de Groot, T.H. (author), Tigrek, R.F. (author), Krasnov, O.A. (author), Huizing, A.G. (author), Yarovoy, A. (author)This paper investigates the challenges for Resource Allocation (RA) that can allow reconfigurable systems to adapt the limited resources in a multi-sensor network during operational phase to changing missions, users and/or environments. Nodes can have multiple different radar frontends, but also electro-optic and acoustic front-ends. Using a...conference paper 2011
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van Foeken, E. (author), Kwakkernaat, M.R.J.A.E. (author)The increasing demand for shared awareness in multi-platform sensor systems requires advanced wireless information sharing techniques. The analysis of these techniques requires information about communication resources and latency to be available in models. The work presented here introduces generic low complexity models that describe the...conference paper 2011
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Strijkers, R.J. (author), Cristea, M. (author), Korkhov, V. (author), Marchal, D. (author), Belloum, A. (author), de Laat, C. (author), Meijer, R.J. (author), TNO Informatie- en Communicatietechnologie (author)Grid workflow management systems automate the orchestration of scientific applications with large computational and data processing needs, but lack control over network resources. Consequently, the management system cannot prevent multiple communication intensive applications to compete for network resources, which leads to unpredictable...conference paper 2010
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Fernandez Diaz, I. (author), Litjens, R. (author), van den Berg, J.L. (author), Dimitrova, D.C. (author), Spaey, K. (author)Advanced packet scheduling schemes in 3G/3G+ mobile networks provide one or more parameters to optimise the trade-off between QoS and resource efficiency. In this paper we study the sensitivity of the optimal parameter setting for packet scheduling in LTE radio networks with respect to various traffic and environment aspects. For our...conference paper 2010
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Roijers, F. (author), van den Berg, J.L. (author), Mandjes, M. (author), TNO Informatie- en communicatietechnologie (author)In this paper we model and analyze a relay node in a wireless ad-hoc network; the capacity available at this node is used to both transmit traffic from the source nodes (towards the relay node), and to serve traffic at the relay node (so that it can be forwarded to successor nodes). Clearly, a network node that is used more heavily than others...article 2010
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Maljers, D. (author), Stafleu, J. (author), Busschers, F. (author), Gunnink, J.L. (author)The Geological Survey of the Netherlands aims at building a 3D geological property model of the upper 30 meters of the Dutch subsurface. This model, called GeoTOP, provides a basis for answering subsurface related questions on, amongst others, sand and gravel resources. Modelling is carried out per province using a core-database containing...conference paper 2010
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Litjens, R. (author), Jorguseski, L. (author), TNO Informatie- en Communicatietechnologie (author)Mobile communication networks are usually planned to provide some minimum service quality level during peak traffic hours. Consequently, in off-peak hours, when traffic loads are lower, the network is characterised by over-capacity, in the sense that same service quality targets can typically be satisfied with a reduced set of network resources,...conference paper 2010
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- Sailer, M.F. (author), Klerks, S.A.W. (author), Oostra, M.A.R. (author), van den Brink, L.H. (author), TNO Bouw en Ondergrond (author) conference paper 2010
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van der Velde, Y. (author), Rozemeijer, J.C. (author), de Rooij, G.H. (author), van Geer, F.C. (author), Torfs, P.J.J.F. (author), de Louw, P.G.B. (author), TNO Bouw en Ondergrond (author)Identifying effective measures to reduce nutrient loads of headwaters in lowland catchments requires a thorough understanding of flow routes of water and nutrients. In this paper we assess the value of nested-scale discharge and groundwater level measurements for predictions of catchment-scale discharge and nitrate loads. In order to relate...article 2010
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Batini, F. (author), van Wees, J.-D. (author), TNO Bouw en Ondergrond (author)At present, the worldwide geothermal energy production provides less than 1% of the world's energy needs but the geothermal resources confined in the first 6 km of the earth's crust are estimated to be in the fairly above 200 GW of which 50-80 GW are located in Europe. Exploring and developing at large scale untapped hydrothermal resources...conference paper 2010