Searched for: subject:"Cluster%5C+Analysis"
(1 - 20 of 32)

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Dall'Osto, M. (author), Beddows, D.C.S. (author), Asmi, A. (author), Poulain, L. (author), Hao, L. (author), Freney, E. (author), Allan, J.D. (author), Canagaratna, M. (author), Crippa, M. (author), Bianchi, F. (author), De Leeuw, G. (author), Eriksson, A. (author), Swietlicki, E. (author), Hansson, H.C. (author), Henzing, J.S. (author), Granier, C. (author), Zemankova, K. (author), Laj, P. (author), Onasch, T. (author), Prevot, A. (author), Putaud, J.P. (author), Sellegri, K. (author), Vidal, M. (author), Virtanen, A. (author), Simo, R. (author), Worsnop, D. (author), O'Dowd, C. (author), Kulmala, M. (author), Harrison, R.M. (author)
The formation of new atmospheric particles involves an initial step forming stable clusters less than a nanometre in size (<~1 nm), followed by growth into quasi-stable aerosol particles a few nanometres (~1-10 nm) and larger (>~10 nm). Although at times, the same species can be responsible for both processes, it is thought that more generally...
article 2018
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Pit, I.R. (author), Griffioen, J. (author), Wassen, M.J. (author)
As coastal lowlands are prone to sea water flooding, sea-level rise might globally increase this risk. To protect its coastline, the Netherlands adds an average of 12 million m3 of sand annually, but more is needed to cope with the expected consequences of global warming. In 2011 a novel approach for coastal protection was applied near The Hague...
article 2017
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Boesveld, I.C. (author), Bruijnzeels, M.A. (author), Hitzert, M. (author), Hermus, M.A.A. (author), van der Pal-de Bruin, K.M. (author), van den Akker-van Marle, M.E. (author), Steegers, E.A.P. (author), Franx, A. (author), de Vries, R.G. (author), Wiegers, T.A. (author)
Background: The goal of integrated care is to offer a continuum of care that crosses the boundaries of public health, primary, secondary, and tertiary care. Integrated care is increasingly promoted for people with complex needs and has also recently been promoted in maternity care systems to improve the quality of care. Especially when located...
article 2017
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Friesen, M.C. (author), Shortreed, S.M. (author), Wheeler, D.C. (author), Burstyn, I. (author), Vermeulen, R. (author), Pronk, A. (author), Colt, J.S. (author), Baris, D. (author), Karagas, M.R. (author), Schwenn, M. (author), Johnson, A. (author), Armenti, K.R. (author), Silverman, D.T. (author), Yu, K. (author)
Objectives: Rule-based expert exposure assessment based on questionnaire response patterns in population-based studies improves the transparency of the decisions. The number of unique response patterns, however, can be nearly equal to the number of jobs. An expert may reduce the number of patterns that need assessment using expert opinion, but...
article 2015
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Hofstetter, H. (author), Dusseldorp, E. (author), van Empelen, P. (author), Paulussen, T.W.G.M. (author)
Objective: The aim of this paper is to provide a guideline to a universal understanding of the analysis of co-occurrence of risk behaviors. The use of cluster analysis and factor analysis was clarified. Method: A theoretical introduction to cluster analysis and factor analysis and examples from literature were provided. A representative sample ...
article 2014
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Beddows, D.C.S. (author), Dall'Osto, M. (author), Harrison, R.M. (author), Kulmala, M. (author), Asmi, A. (author), Wiedensohler, A. (author), Laj, P. (author), Fjaeraa, A.M. (author), Sellegri, K. (author), Birmili, W. (author), Bukowiecki, N. (author), Weingartner, E. (author), Baltensperger, U. (author), Zdimal, V. (author), Zikova, N. (author), Putaud, J.P. (author), Marinoni, A. (author), Tunved, P. (author), Hansson, H.C. (author), Fiebig, M. (author), Kivekäs, N. (author), Swietlicki, E. (author), Lihavainen, H. (author), Asmi, E. (author), Ulevicius, V. (author), Aalto, P.P. (author), Mihalopoulos, N. (author), Kalivitis, N. (author), Kalapov, I. (author), Kiss, G. (author), de Leeuw, G. (author), Henzing, B. (author), O'Dowd, C. (author), Jennings, S.G. (author), Flentje, H. (author), Meinhardt, F. (author), Ries, L. (author), van der Gon, H.A.C. (author), Visschedijk, A.J.H. (author)
Clusteranalysis of particle number size distributions frombackground sites across Europeis presented. This generated a total of nine clusters of particle size distributions which could be further combined into two main groups, namely: a south-to-north category (four clusters) and a west-to-east category (five clusters). The first group was...
article 2014
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de Kock, K.A. (author), Steenbeek, R. (author), Buijs, P.C. (author), Lucassen, P.L. (author), Knottnerus, J.A. (author), Lagro-Janssen, A.L. (author)
Background. Work and being able to work are important prerequisites for health and well being. Health problems can have a negative influence on the ability to work and not being able to work can be detrimental for patients’ psychosocial well being. Although GPs are aware of this importance they do not always structurally pay attention to...
article 2014
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Bajpai, R.P. (author), van Wijk, E.P.A. (author), van Wijk, R. (author), van der Greef, J. (author)
Sixty visible range photon signals spontaneously emitted from the dorsal side of both hands of fifteen human subjects are analyzed with the aim of finding their attributes. The signals are of 30 min duration and detected in bins of 50 ms by two synchronized photo multipliers sensitive in the range (290-630 nm). Each signal is a time series of 36...
article 2013
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Draisma, H.H. (author), Reijmers, T.H. (author), Meulman, J.J. (author), van der Greef, J. (author), Hankemeier, T. (author), Boomsma, D.I. (author)
Twin and family studies are typically used to elucidate the relative contribution of genetic and environmental variation to phenotypic variation. Here, we apply a quantitative genetic method based on hierarchical clustering, to blood plasma lipidomics data obtained in a healthy cohort consisting of 37 monozygotic and 28 dizygotic twin pairs, and...
article 2013
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Bieser, J. (author), Aulinger, A. (author), Matthias, V. (author), Quante, M. (author), Denier Van Der Gon, H.A.C. (author)
The vertical allocation of emissions has a major impact on results of Chemistry Transport Models. However, in Europe it is still common to use fixed vertical profiles based on rough estimates to determine the emission height of point sources. This publication introduces a set of new vertical profiles for the use in chemistry transport modeling...
article 2011
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Gubbels, J.S. (author), Kremers, S.P.J. (author), Stafleu, A. (author), Dagnelie, P.C. (author), de Vries, S.I. (author), de Vries, N.K. (author), Thijs, C. (author), TNO Kwaliteit van Leven (author)
Objective: To examine clustering of energy balance-related behaviors (EBRBs) in young children. This is crucial because lifestyle habits are formed at an early age and track in later life. This study is the first to examine EBRB clustering in children as young as 2 years. Study design: Cross-sectional data originated from the Child, Parent and...
article 2009
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Boesten, R.J. (author), Schuren, F.H.J. (author), de Vos, W.M. (author), TNO Kwaliteit van Leven (author)
A genomic DNA-based microarray was constructed containing over 6000 randomly cloned genomic fragments of approximately 1-2 kb from six mammalian intestinal Bifidobacterium spp. including B. adolescentis, B. animalis, B. bifidum, B. catenulatum, B. longum and B. pseudolongum. This Bifidobacterium Mixed-Species (BMS) microarray was used to...
article 2009
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Kuper, C.F. (author), Heijne, W.H. (author), Dansen, M. (author), Verhoeckx, K.C. (author), Boorsma, A. (author), Radonjic, M. (author), Bruijntjes, J. (author), Stierum, R. (author), Muijser, H. (author), Arts, J.H. (author), TNO Kwaliteit van Leven (author)
To contribute to the hazard identification of low molecular weight (LMW) respiratory allergens, respiratory allergy induced by trimellitic anhydride (TMA) was characterized by whole genome analysis of lung tissue and blood proteomics in Brown Norway rats. Dermal sensitization (50% and 25% w/v) with TMA and an inhalation challenge of 15 mg/m(3)...
article 2008
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Martens, M.K. (author), van Assema, P. (author), Paulussen, T.G.W.M. (author), van Breukelen, G. (author), Brug, J. (author), TNO Kwaliteit van Leven (author)
Objective: The aim of this study was to assess the behavioural effects of a school-based healthful diet promotion intervention implemented in lower vocational schools. Design: A cluster-randomised pre-test-post-test experimental design was used, and data were collected by means of written questionnaires. Setting: Students of 18 Dutch lower...
article 2008
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Rodenburg, W. (author), Heidema, A.G. (author), Boer, J.M.A. (author), Bovee-Oudenhoven, I.M.J. (author), Feskens, E.J.M. (author), Mariman, E.C.M. (author), Keijer, J. (author), TNO Kwaliteit van Leven (author)
In whole genome microarray studies major gene expression changes are easily identified, but it is a challenge to capture small, but biologically important, changes. Pathway-based programs can capture small effects but may have the disadvantage of being restricted to functionally annotated genes. A structured approach toward the identification of...
article 2008
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van den Brink, C. (author), Frapporti, G. (author), Griffioen, J. (author), Zaadnoordijk, W.J. (author), TNO Bouw en Ondergrond (author)
Quantitative insight into the impact of land use on groundwater composition is vital for the sustainable management of aquifers, especially those situated in urban areas. The objective of the present study was to determine the effects of land use on groundwater composition throughout the Netherlands, relative to the influence of groundwater age,...
article 2007
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Marquart, H. (author), Northage, C. (author), Money, C. (author), TNO Kwaliteit van Leven (author)
The new European chemicals legislation REACH (Registration, Evaluation, Authorisation and restriction of Chemicals) requires the development of Exposure Scenarios describing the conditions and risk management measures needed for the safe use of chemicals. Such Exposure Scenarios should integrate considerations of both human health and the...
article 2007
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Oomes, S.J.C.M. (author), van Zuijlen, A.C.M. (author), Hehenkamp, J.O. (author), Witsenboer, H. (author), van der Vossen, J.M.B.M. (author), Brul, S. (author), TNO Kwaliteit van Leven (author)
Spore-forming bacteria can be a problem in the food industry, especially in the canning industry. Spores present in ingredients or present in the processing environment severely challenge the preservation process since their thermal resistance may be very high. We therefore asked the question which bacterial spore formers are found in a typical...
article 2007
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van der Werf, M.J. (author), Pieterse, B. (author), van Luijk, N. (author), Schuren, F. (author), van der Werff van der - Vat, B. (author), Overkamp, K. (author), Jellema, R.H. (author), TNO Kwaliteit van Leven (author)
The value of the multivariate data analysis tools principal component analysis (PCA) and principal component discriminant analysis (PCDA) for prioritizing leads generated by microarrays was evaluated. To this end, Pseudomonas putida S12 was grown in independent triplicate fermentations on four different carbon sources, i.e. fructose, glucose,...
article 2006
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Wiefferink, C.H. (author), Peters, L. (author), Hoekstra, F. (author), Ten Dam, G. (author), Buijs, G.J. (author), Paulussen, T.G.W.M. (author), TNO Kwaliteit van Leven (author)
Characterizing school health promotion is its category-by-category approach, in which each separate health-related behavior is addressed independently. Such an approach creates a risk that extra-curricular activities become overloaded, and that teaching staff are distracted by continuous innovations. Within the health promotion sector there are...
article 2006
Searched for: subject:"Cluster%5C+Analysis"
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