Searched for: subject%3A%22Performance%255C%2Bassessment%22
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Hernández-Balaguera, E. (author), Munoz-Díaz, L. (author), Pereyra, C. (author), Lira-Cantu, M. (author), Najafi, M. (author), Galagan, Y. (author)
The unprecedented increase of photovoltaic perovskites performance metrics has been obscured by the puzzling phenomenology underlying the device's anomalous ionic/electronic landscape. Thus, the establishment of a reliable measurement protocol of efficiency measurements, unanimously adopted by the perovskite's community, is indeed necessary to...
article 2022
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Paulissen, J.J.M. (author), Meuken, D. (author), van Eijk, A.M.J. (author)
conference paper 2021
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Pijnappel, T.R. (author), van den Berg, J.L. (author), Borst, S.C. (author), Litjens, R. (author)
Drone base stations can help safeguard coverage and provide capacity relief when cellular networks are under stress. Examples of such stress scenarios are events with massive crowds or network outages. In this paper we focus on a disaster scenario with emergence of a traffic hotspot, where agile drone positioning and load management is a...
conference paper 2021
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Braam, S. (author), Litjens, R. (author), Smulders, P. (author), Ijntema, W. (author)
We present a simulation-based assessment of the performance potential of distributed MIMO (D-MIMO), multi-user MIMO (MU-MIMO) and particularly the combined D/MU-MIMO operation, for which we extend previously published scheduling and beamforming principles. The assessment study reveals that, when optimizing average user throughput performance, D...
conference paper 2020
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Raftopoulou, M. (author), Jorguseski, L. (author), Litjens, R. (author)
We design and assess novel random access (RA) procedures for use in 5G radio access networks in support of machine-type applications requiring Ultra-Reliable Low-Latency Communications (URLLC). In a simulation-based performance assessment the proposed RA procedures are compared against LTE Cat-M1 (or LTE-M), the current LTE-based access...
conference paper 2019
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Nair, V. (author), Litjens, R. (author), Zhang, H. (author)
A suitability assessment and performance optimisation is presented of narrowband Internet of Things (NB-IoT) cellular technology for use in smart energy distribution networks. The focus is on the reliable and timely delivery of outage restoration and management (ORM) messages at the event of a local or regional power outage. Both the cellular NB...
article 2019
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Vrijlandt, M.A.W. (author), Struijk, E.L.M. (author), Brunner, L.G. (author), Veldkamp, J.G. (author), Witmans, N. (author), Maljers, D. (author), van Wees, J.D. (author)
Geothermal development in aquifer settings can benefit considerably from a wealth of subsurface data acquired over the past decades by oil and gas exploration and production. In the Netherlands, this data has been gathered by the Geological Survey and has been made publicly available (www.nlog.nl). Almost a decade ago this data was used to...
conference paper 2019
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Weng, C.Y. (author), Tan, W.C. (author), Yuan, Q. (author), Chen, I.M. (author)
Given a robotic manipulation task, decision on which robotic configuration (robotic system and necessary peripherals, including assistant tools, sensor systems, and so on.) to use and evaluating performance of the solution remains as an open, challenging but a meaningful problem. This work attempts to address this problem by defining the concept...
article 2019
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Derks, M.J.W. (author), Romijn, H. (author)
Rural off-grid electrification systems powered by renewable energy have become popular in the Global South. Unfortunately, many microgrids have experienced trouble during their first years of operation, leading to premature system deterioration. In this paper we trace these problems to institutional issues associated with goal displacement in...
article 2019
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Du Bosq, T. (author), Agarwal, S. (author), Dijk, J. (author), Gungor, A. (author), Guven, H.E. (author), Haran, T. (author), Laurenzis, M. (author), Leonard, K. (author), Mahalanobis, A. (author), Paunescu, G. (author), Piper, J. (author), Repasi, E. (author), Sheng, Y. (author)
Conventional electro-optical and infrared (EO/IR) systems (i.e., active, passive, multiband and hyperspectral) capture an image by optically focusing the incident light at each of the millions of pixels in a focal plane array. The optics and the focal plane are designed to efficiently capture desired aspects (like spectral content, spatial...
conference paper 2018
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Nair, V. (author), Litjens, R. (author), Zhang, H. (author)
In this paper, we assess the suitability of NB-IoT (Narrowband Internet of Things) cellular technology for smart grid applications, concentrating on the reliable and timely delivery of Outage Restoration & Management (ORM) messages at the event of a local or regional power outage. Using system-level simulations modelling of both the cellular NB...
conference paper 2018
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Kleijn van Willigen, G.K. (author), van Meerveld, H. (author)
The reliability and availability of the Dutch storm surge barriers are calculated by probabilistic risk assessment and various underlying risk analysis methods. These calculations, however, focus on the numerical probability of the storm surge barrier functioning adequately, and the implementation of the many constraints from the risk analysis...
conference paper 2016
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Martinez, A.M. (author), Trichias, K. (author), Litjens, R. (author)
Active Antenna Systems (AAS) technology is one of several advanced features that enable a mobile network operator to cost-efficiently increase its network capacity to cope with the exponential mobile data traffic growth and the ever more demanding performance requirements. AAS can be exploited to perform e.g. Virtual Sectorisation (ViS), i.e....
conference paper 2016
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Cramp, A.J. (author), van den Berg, T.W. (author), Huiskamp, W. (author)
Performance assessment is a key factor in designing distributed simulation environments that are fit-forpurpose and cost-effective. Simulations used for training applications should provide the required level of responsiveness and interactivity. Simulations used for analysis or decision support should execute as fast as possible to enable quick...
conference paper 2014
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Daanen, H.A.M. (author), van Ling, S. (author), Tan, T.K. (author)
Background: It has been shown that endurance performance after one night of sleep deprivation is not compromised despite the feeling of fatigue and that, in contrast, performance in the heat deteriorates even though people may feel good. However, it is essentially unknown how the estimation of performance capabilities relate to actual...
article 2013
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Litjens, R. (author), Zhang, H. (author), Noppen, I. (author), Yu, L. (author), Karipidis, E. (author), Börner, K. (author)
We assess the system-level performance of nonorthogonal spectrum sharing achieved via maximum sum-rate (SR), Nash bargaining (NB), and zero-forcing (ZF) transmit beamforming techniques. A look-up table based physical layer abstraction and radio resource management mechanisms (including packet scheduling) are proposed and incorporated in system...
conference paper 2013
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Benders, F.P.A. (author), Colin, M.E.G.D. (author), Schippers, P. (author), van Vossen, R. (author)
Accurate knowledge on sonar performance is critical for design and deployment of any type of sonar. The assessment of sonar performance, however, is a complex task since it depends on system parameters and settings, target properties and tactics and on the environmental conditions. TNO has accumulated more than 30 years of sonar performance...
conference paper 2012
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Amirijoo, M. (author), Jorguseski, L. (author), Litjens, R. (author), Schmelz, L.C. (author)
Cell outage compensation is a self-healing function and as such part of the Self-Organising Networks concept for mobile wireless networks. It aims at mitigating the degradation of coverage, capacity and service quality caused by a cell or site level outage. Upon detection of such an outage, cell outage compensation tunes a variety of control...
conference paper 2011
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Meijnen, J.P. (author), de Winde, J.H. (author), Ruijssenaars, H.J. (author)
The oxidative D-xylose catabolic pathway of Caulobacter crescentus, encoded by the xylXABCD operon, was expressed in the gram-negative bacterium Pseudomonas putida S12. This engineered transformant strain was able to grow on D-xylose as a sole carbon source with a biomass yield of 53% (based on g [dry weight] g D-xylose-1) and a maximum growth...
article 2009
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de Kraker, J.K. (author), Noordkamp, H.W. (author), Fitski, H.J. (author), Barros, A.I. (author), TNO Defensie en Veiligheid (author)
During the various phases of the Defense acquisition process, and in the early design phases, many decisions must be made concerning the performance and cost of the new equipment. Often many of these decisions are made while having only a limited view of their consequences or based on subjective information. Moreover, it is known that the impact...
conference paper 2009
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