Searched for: subject%3A%22Cumulants%22
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Eledlebi, K. (author), Ruta, D. (author), Hildmann, H. (author), Saffre, F. (author), al Hammadi, Y. (author), Isakovic, A.F. (author)
When deploying a wireless sensor network (WSN) identifying optimal locations for the nodes is challenging, especially so if the environment is either (i) unknown or (ii) obstacle-rich. We proposes BISON (Bio-Inspired Self-Organizing Network), a variant of the Voronoi algorithm to address this challenge. Among the features of the approach are the...
article 2022
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Kastelein, R.A. (author), Helder-Hoek, L. (author), Cornelisse, S.A. (author), von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Ketten, D.R. (author)
Noise-induced temporary hearing threshold shift (TTS) was studied in a harbor porpoise exposed to impulsive sounds of scaled-down airguns while both stationary and free-swimming for up to 90 min. In a previous study, ∼4 dB TTS was elicited in this porpoise, but despite 8 dB higher single-shot and cumulative exposure levels (up to 199 dB re 1...
article 2020
document
Eledlebi, K. (author), Ruta, D. (author), Hildmann, H. (author), Saffre, F. (author), Alhammadi, Y. (author), Isakovic, A. (author)
When deploying a wireless sensor network (WSN) identifying optimal locations for the nodes is challenging, especially so if the environment is either (i) unknown or (ii) obstacle-rich. We proposes BISON (Bio-Inspired Self- Organizing Network), a variant of the Voronoi algorithm to address this challenge. Among the features of the approach are...
article 2020
document
Ligthart, T.N. (author), Ansems, A.M.M. (author)
Purpose EnvPack, a tool for assessing the environmental impact of packaging, offers the user four assessment methods. The question arose whether the choice of the method would affect the ranking of packaging alternatives and whether different hotspots in the life cycle would come up. Methods The EnvPack tool contains three different product...
article 2018
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ter Heege, J.H. (author), Zijp, M.H.A.A. (author), de Bruin, G. (author), ten Veen, J.H. (author)
Uncertainties in upfront predictions of hydraulic fracturing and gas production of underexplored shale gas targets are important as often large potential resources are deduced based on limited available data. In this paper, uncertainties are quantified by using normal distributions of different input parameters in wellbased models for hydraulic...
conference paper 2014
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Wu, T. (author), Toet, A. (author)
A simple power-logarithm histogram modification operator is proposed to enhance digital image contrast. First a logarithm operator reduces the effect of spikes and transforms the image histogram into a smoothed one that approximates a uniform histogram while retaining the relative size ordering of the original bins. Then a power operator...
conference paper 2014
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Fillinger, L. (author), Hunter, A.J. (author), Zampolli, M. (author), Clarijs, M.C. (author)
Divers, including closed circuit (rebreather) divers constitute a potential threat to waterside infrastructures. Active diver detection sonars are available commercially but present some shortcomings, particularly in highly reverberant environments. This has led to research on passive sonar for diver detection. Passive detection of open-circuit...
conference paper 2013
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Leeman, W.R. (author), Krul, L. (author), Houben, G.F. (author)
Upon analysis of chemically complex food matrices a forest of peaks is likely to be found. Identification of these peaks and concurrent determination of the toxicological relevance upon exposure is very time consuming, expensive and often requires animal studies. Recently, a safety assessment framework based on the Threshold of Toxicological...
article 2013
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Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Bongers, P.M. (author), van Dieën, J.H. (author)
Background: Cumulative low-back load is suggested to be associated with low back pain, possibly due to (micro-)fractures of spinal segments. Based on available in vitro data it can be assumed that, in order to predict spine segment failure from cumulative compressive loading, load magnitude should be weighted with an exponent higher than one,...
article 2012
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Vossen, S.H.J.A. (author), Naus, H.W.L. (author), Zwamborn, A.P.M. (author), TNO Defensie en Veiligheid (author)
The harmonic retrieval (HR) problem concerns the estimation of the frequencies in a sum of real or complex harmonics. Both correlation and cumulant-based approaches are used for this purpose. Cumulant-based HR algorithms use a single 1-D slice of the fourth-order cumulant that is estimated directly from the data. We present a new cumulant-based...
article 2010
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Suurs, R.A.A. (author), Hekkert, M.P. (author), Kieboom, S. (author), Smits, R.E.H.M. (author), TNO Bouw en Ondergrond (author)
This study contributes to insights into mechanisms that influence the successes and failures of emerging energy technologies. It is assumed that for an emerging technology to fruitfully develop, it should be fostered by a Technological Innovation System (TIS), which is the network of actors, institutions and technologies in which it is embedded....
article 2010
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Suurs, R.A.A. (author), Hekkert, M.P. (author), Smits, R.E.H.M. (author), TNO Bouw en Ondergrond (author)
This study provides insight into the development of hydrogen and fuel cell technologies in the Netherlands (1980-2007). This is done by applying a Technological Innovation System (TIS) approach. This approach takes the perspective that a technology is shaped by a surrounding network of actors, institutions and technologies. When a technology is...
article 2009
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van Hamberg - Reenen, H.H. (author), van der Beek, A.J. (author), Blatter, B. (author), van der Grinten, M.P. (author), van Mechelen, W. (author), Bongers, P.M. (author), TNO Kwaliteit van Leven (author)
The objective of this prospective cohort study was to evaluate if peak or cumulative musculoskeletal discomfort may predict future low-back, neck or shoulder pain among symptom-free workers. At baseline, discomfort per body region was rated on a 10-point scale six times during a working day. Questionnaires on pain were sent out three times...
article 2008
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IJmker, S. (author), Huysmans, M.A. (author), Blatter, B.M. (author), van der Beek, A.J. (author), van Mechelen, W. (author), Bongers, P.M. (author), TNO Kwaliteit van Leven (author)
Worldwide, millions of office workers use a computer. Reports of adverse health effects due to computer use have received considerable media attention. This systematic review summarises the evidence for a relationship between the duration of work time spent using the computer and the incidence of hand-arm and neck-shoulder symptoms and disorders...
article 2007
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van den Heuvel, S.G. (author), IJmker, S. (author), Blatter, B.M. (author), de Korte, E.M. (author), TNO Kwaliteit van Leven (author)
Introduction: The objective of the present study is to describe the extent of productivity loss among computer workers with neck/shoulder symptoms and hand/arm symptoms, and to examine associations between pain intensity, various physical and psychosocial factors and productivity loss in computer workers with neck/shoulder and hand/arm symptoms....
article 2007
document
Visser, B. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
A review of the literature on the pathophysiology of upper extremity muscle disorders (UEMDs) was performed. An overview is given of clinical findings and hypotheses on the pathogenesis of UEMDs. The literature indicates that disorders of muscle cells and limitations of the local circulation underlie UEMDs. However, these disorders identified do...
article 2006
document
Jonker, D. (author), Freidig, A.P. (author), Groten, J.P. (author), de Hollander, A.E.M. (author), Stierum, R.H. (author), Woutersen, R.A. (author), Feron, V.J. (author), TNO Voeding (author)
Recent developments in hazard identification and risk assessment of chemical mixtures are reviewed. Empirical, descriptive approaches to study and characterize the toxicity of mixtures have dominated during the past two decades, but an increasing number of mechanistic approaches have made their entry into mixture toxicology. A series of...
article 2004
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TNO Arbeid (author), van den Heuvel, S.G. (author), de Looze, M.P. (author), Hildebrandt, V.H. (author), Thé, K.H. (author)
Objectives. This study evaluated the effects on work-related neck and upper-limb disorders among computer workers stimulated (by a software program) to take regular breaks and perform physical exercises. Possible effects on sick leave and productivity were studied as well. Methods. A randomized controlled design was used with cluster...
article 2003
document
Jevrosimović, M. (author), Matić, D. (author), Jorgušeski, L. (author), Herben, M.H.A.J. (author), Brussaard, G. (author)
In 3G mobile communication systems, smart antenna processing is seen as a powerful tool to combat directional interference. In this paper we derive the statistics of the signal-to-interference+noise ratio (SINR) achieved by the combined Rake receiver-smart antenna processing for the case where the thermal noise is the only source of interference...
conference paper 2003
document
Willems, J.H.B.M. (author)
The Health Council of the Netherlands has published its advisory report on Repetitive Strain Injury (RSI). The report provides clear information on the state of this syndrome, including the definition of the problem, the epidemiology, various hypothetical pathophysiological mechanisms, occupational and personal risk factors, and possible methods...
article 2002
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