Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Regimes de ordenação espacial no Brasil : A fusão de neoliberalismo, populismo de esquerda e visões modernistas na urbanização de favelas no Recife
Nuijten, Monique ; Koster, Martijn ; Vries, Pieter de; Cabral, Augusto Antonio Campelo - \ 2018
Caderno CRH 31 (2018)82. - ISSN 0103-4979 - p. 59 - 73.
Favelas urbanization - Neoliberalism - Participation - Socialism - Urban space

This article shows how regimes of spatial ordering are produced by the entangling of neoliberalism, leftist populism and modernist visions. It focuses on Prometrópole, a slum upgrading project in Recife. In this project, the neoliberal dimension manifests in the idea that the state, private companies and citizens together are responsible for (re)constructing urban space, and that beneficiaries are autonomous citizens, taking responsibility for their new living environment. The leftist political dimension is seen in participatory procedures to involve the residents in the project. The modernist aesthetics informs the project design with the requirement to use the new space according to the standards of “modern civilization”. As our research shows, such a regime of spatial ordering clashes with the livelihoods of the residents. Furthermore, the participatory procedures fail to grant them any real influence in creating their environment. Consequently, these residents drastically reconstruct their estate, reappropriating the urban space and contesting the regime imposed upon them.

Towards sustainable cocoa in Côte d'Ivoire : The impacts and contribution of UTZ certification combined with services provided by companies
Ingram, V. ; Rijn, F. van; Waarts, Y. ; Dekkers, M. ; Vos, B. de; Koster, T. ; Tanoh, R. ; Galo, A. - \ 2018
Wageningen : Wageningen Economic Research (Wageningen Economic Research rapport 2018-041) - ISBN 9789463437769 - 137
Conservation Science and Practice Must Engage With the Realities of Complex Tropical Landscapes
Boedhihartono, A.K. ; Bongers, F. ; Boot, R.G.A. ; Dijk, Jerry van; Jeans, Helen ; Kuijk, Marijke van; Koster, H. ; Reed, James ; Sayer, J. ; Sunderland, Terry ; Turnhout, E. ; Vianen, J. van; Zuidema, P.A. - \ 2018
Tropical conservation science 11 (2018). - ISSN 1940-0829 - p. 1 - 7.
There is a growing disconnect between the international conferences where grand solutions for tropical conservation are designed and the complex local realities in tropical landscapes where plans need to be implemented. Every tropical landscape is different and no “one size will fit all.” There is a tendency for global processes to prescribe simple generalized solutions that provide good sound bites that can be communicated with political actors and the media. Sustainable outcomes in tropical landscapes require locally adapted, unique approaches supported by long-term processes of learning and adaptation. Tropical biologists and conservationists can play a key role by establishing effective local–global links and by directly engaging in local policy discourses while remaining connected to evolving political imperatives
WUR optimaliseert koudebalans in peren
Hogeveen-van Echtelt, Esther ; Maas, Rien van der - \ 2017
vegIMPACT: Knowledge Transfer : Improving vegetable production by smallholder farmers in Indonesia
Plaisier, C. ; Dijkxhoorn, Y. ; Medah, J. ; Dengerink, J. ; Koster, T. ; Hengsdijk, H. ; Koesveld, F. van - \ 2017
The Hague : Wageningen Economic Research (Wageningen Economic Research report 2017-115) - ISBN 9789463438162 - 71
Rot groot probleem in Zuidwesten
Tramper, Marcel ; Koster, Leendert - \ 2017
Zeker 80% van de knollen gaat verrotten
Koster, Leendert - \ 2017
Towards a sustainable sugarcane industry in India : baseline results on Solidaridad’s programme: Increasing water use efficiency in sugarcane growing in India
Plaisier, C. ; Rijn, F. van; Ende, H. van der; Koster, T. - \ 2017
Den Haag : Wageningen Economic Research (Wageningen Economic Research report 2017-051) - ISBN 9789463431965 - 109
Wageningen Economic Research conducts a study to evaluate the socioeconomic impact on sugarcane farmers of the Solidaridad programme. A pipeline approach was used, which clusters the farmers in cohorts based on the year they receive support and training: 2016, 2017 and 2018. A baseline survey was conducted on 1,008 farmers from the command areas in April 2016. This report gives a representative and detailed description of the target group in 2016.
Strong adherence to a healthy dietary pattern is associated with better semen quality, especially in men with poor semen quality
Oostingh, Elsje C. ; Steegers-Theunissen, Régine P.M. ; Vries, Jeanne H.M. de; Laven, Joop S.E. ; Koster, Maria P.H. - \ 2017
Fertility and Sterility 107 (2017)4. - ISSN 0015-0282 - p. 916 - 923.e2.
Dietary pattern - Male subfertility - Semen analysis
Objective: To study associations between periconceptional dietary patterns and semen quality parameters. Design: Prospective periconception cohort study. Setting: Tertiary hospital. Patient(s): One hundred and twenty-nine male partners of pregnant women who participated in the Rotterdam Periconception Cohort (Predict study). Intervention(s): None. Main Outcome Measure(s): Semen quality parameters-ejaculate volume, sperm concentration, total sperm count, progressive motility, immotile sperm, and total motile sperm count (TMSC). Result(s): Men included in our study were on average 35 (±6 standard deviation) years old and had a body mass index of 26.4 ± 4 kg/m2. Two dietary patterns were identified using principle component analysis, which were labeled as "healthy" and "unhealthy." An increase of one factor score (stated as β) represented an increase of 1 standard deviation. Sperm concentration (β = 0.278; 95% CI, 0.112-0.444), total sperm count (β = 1.369; 95% CI, 0.244-2.495), progressive motility (β = 4.305; 95% CI, 0.675-7.936), and TMSC (β = 0.319; 95% CI, 0.113-0.526) were all positively associated with a strong adherence to the healthy dietary pattern. Subgroup analysis showed that these associations were mainly present in men with a TMSC
Familiarity, monotony, or variety : The role of flavor complexity in food intake
Köster, E.P. ; Mojet, J. - \ 2016
In: Flavor / Etiévant, P., Guichard, Elisabeth, Salles, Christian, Voilley, Andree, Woodhead Publishing (Woodhead Publishing Series in Food Science, Technology and Nutrition ) - ISBN 9780081002957 - p. 277 - 291.
Arousal motivation theory - Consumer insight - Food boredom - Implicit real-world methodology - Market introduction strategy - Perceived flavor complexity

The perceived complexity of new food products plays a crucial role in their introduction to the market. Simple flavors and textures that have the advantage of being accepted at first sight quickly become boring, whereas complex new tastes are not immediately liked, but have to pass a phase of exploration before becoming liked for a much longer time. The mechanisms that govern these processes are discussed in the chapter, and ways are indicated that lead to the introduction of products with long-lasting success.

Coproducing urban space: Rethinking the formal/informal dichotomy
Koster, Martijn ; Nuijten, Monique - \ 2016
Singapore Journal of Tropical Geography 37 (2016)3. - ISSN 0129-7619 - p. 282 - 294.
Providing an introduction to the special section ‘Close encounters: ethnographies of the coproduction of space by the urban poor’, this article sets out to argue that the image of ‘the informal’ as unruly, messy and dirty continues to inform urban planning around the world. As a reaction to this view, it contends that the informal and formal should be analysed as interconnected and that the informal sphere should be revalued. Urban development is studied as close encounters between established practices, with a locus and a history (tree-like), and newly emerging, unstable and untraceable practices (rhizomatic). Contrary to the tendency in urban planning to conflate the formal with the tree and the informal with the rhizome, we argue that from the perspective of marginal urbanites, formal planning tends to be very arbitrary and frightening (rhizomatic), whereas informal practices can be very predictable and stable (arboreal). The article analyses residents of marginalized urban areas as inventive navigators who explore the changing physical, spatial and sociopolitical environment, avoiding threats and looking for opportunities, grounded in their everyday practices and life histories. The article concludes that marginal urbanites should be acknowledged as coproducers of urban space and that the right to ‘coproduce’ the city lies at the heart of the call for the right to the city
Flavor Memory
Mojet, Jos ; Köster, Ep - \ 2016
In: Multisensory Flavor Perception: From Fundamental Neuroscience Through to the Marketplace / Piqueras-Fiszman, Betina, Spence, Charles, Elsevier Inc. Academic Press (Woodhead Publishing Series in Food Science, Technology and Nutrition 298) - ISBN 9780081003510 - p. 169 - 184.
Ecologically relevant measurement - Flavor as a multisensory concept - Implicit versus explicit memory - Memory distortion - Novelty detection versus flavor recollection

Odor, taste, texture, temperature, and pain all contribute to the perception and memory of food flavor. Flavor memory is also strongly linked to the situational aspects of previous encounters with the flavor, but does not depend on the precise recollection of its sensory features as in vision and audition. Rather, flavor memory is directed at novelty and change detection and thus effectively warns us of the possible dangers of new foods. It also plays a special role in evoking autobiographical memories and crossmodal visual images. In normal everyday life, flavor memory is mainly implicit and merely provides feelings of familiarity. Explicit flavor memory is used by experts and in gastronomic circles. Methods for studying normal implicit flavor memory are still insufficiently used.

The emotional influence of flowers on social perception and memory : An exploratory study
Mojet, J. ; Köster, E.P. ; Holthuysen, N.T.E. ; Veggel, R.J.F.M. Van; Wijk, R.A. De; Schepers, H.E. ; Vermeer, F. - \ 2016
Food Quality and Preference 53 (2016). - ISSN 0950-3293 - p. 143 - 150.
Emotive projection test - Incidental memory - People's perception of others

Background Flowers are reported to have immediate and long-term effects on health and well-being, emotional reactions, mood, social behaviour and memory, but emotional effects have rarely been studied in more detail. Methods This study investigated the influences of flowers on emotional perception of others in healthy adults (n = 64), divided over 4 conditions (3 flower arrays and a flowerless control). The test included a projection test judging pictures of people. One week later memory regarding pictures in the projection test, roommates and the room they had been in, was tested. Results Flowers, positively affected peoples’ mood and their perception of others. With flowers, pictures of other people were judged more positively and less negatively than without flowers. Odorous flowers had a more negative effect. The people in the pictures seemed a bit more open, but clearly less friendly, more arrogant and more depressed under its influence. Furthermore, flowers had a positive influence on the remembrance of the room the participants had been in. Conclusion Flowers exert a more positive influence by their visual appearance than by their odour, and act more on people's feelings towards unknown others than on liking of the food they eat, whereas flowers have little impact on remembering eating situation aspects. Practical implication The use of flowers might perhaps be recommended for increasing relaxation and mutual understanding in public places (restaurants (non-odorous flowers), meeting rooms and waiting rooms).

Fairtrade certification in the banana hired labour sector
Rijn, F.C. van; Judge, L.O. ; Fort, Ricardo ; Koster, Tinka ; Waarts, Y.R. ; Ruben, R. - \ 2016
Wageningen : LEI Wageningen UR (LEI report 2015-056) - ISBN 9789086157129 - 146 p.
bananas - plantations - fair trade - certification - international trade - hired labour - working conditions - ghana - dominican republic - colombia - bananen - beplantingen - certificering - internationale handel - loonarbeiders - arbeidsomstandigheden - dominicaanse republiek
Evidence is needed about the difference that certification makes to workers on banana plantations. The Fairtrade system is therefore investing in monitoring to understand the difference certification makes to banana workers’ employment, living and working conditions, and empowerment. This study meets this need by gathering data on a range of indicators. This study 1) gathers baseline data on indicators and themes that monitor the progress of implementation of Fairtrade’s revised hired labour standards on certified plantations in key banana origins; 2) based on this data it researches and analyses the difference that Fairtrade makes across key themes in comparison to non-certified contexts; it prioritises workers’ voices and perspectives in achieving the objectives of the study. It particularly focuses on understanding the role of Fairtrade in supporting worker empowerment and empowerment-related goals. Focus countries are Ghana, Colombia and the Dominican Republic.
Orthogonal Functionalization of Ferritin via Supramolecular Re-Assembly
Spa, Silvia J. ; Bunschoten, Anton ; Rood, Marcus T.M. ; Peters, R.J.B. ; Koster, Abraham J. ; Leeuwen, F.W.B. Van - \ 2015
European Journal of Inorganic Chemistry 2015 (2015)27. - ISSN 1434-1948 - p. 4603 - 4610.
Ferritin - Insertion - Iron - Nanoparticles - Self-assembly - Supramolecular chemistry

To investigate if the degree of functionalization of ferritin could be controlled using a supramolecular self-assembly process, two photophysical separable batches of ferritin were created by functionalizing ferritin capsids with either Cy3- or Cy5-dye (loading rate of about 50 %). After dis-assembly, Cy3-, Cy5- as well as non-functionalized ferritin subunits were mixed in variable ratios. Photophysical measurements revealed that the ratio in which the subunits were mixed was indeed indicative for the ratios in which the functionalized subunits were observed in the re-assembled capsids. During re-assembly, however, a slight preference for the inclusion of non-functionalized subunits was observed, indicating the reactivity decreased following functionalization. The iron biomineralization properties of ferritin were retained by the multi-functionalized capsids as FeII diffused rapidly inside making it visible by transmission electron microscopy (TEM). These combined data indicate that it is possible to functionalize ferritin in an orthogonal manner using the supramolecular interaction between ferritin subunits.

Are implicit emotion measurements evoked by food unrelated to liking?
Mojet, Jozina ; Dürrschmid, Klaus ; Danner, Lukas ; Jöchl, Max ; Heiniö, Raija Liisa ; Holthuysen, Nancy ; Köster, Egon - \ 2015
Food Research International 76 (2015)P2. - ISSN 0963-9969 - p. 224 - 232.
Emotional congruency - Flavour expectations - Food liking and emotion - Implicit emotion projection - Vanilla flavour

In an effort to find a simple method to measure implicit and unconscious emotional effects of food consumption, a number of methods were compared in an experiment in which 3 groups of at least 24 subjects were each exposed to a pair of yoghurts of the same brand and marketed in the same way, but with different flavours or fat content. The methods used were eye tracking of the packaging, face reading during consumption, a new emotive projection test (EPT) and an autobiographical reaction time test based on mood congruency. In the emotive projection test the subjects rated photographs of others on 6 positive and 6 negative personality traits after having eaten the yoghurt. It showed clear differences in two of the three pairs of yoghurt. The autobiographical congruency test failed to reach significance although all findings went in the same direction as the ones in the EPT. Liking and familiarity with the products were also measured and the fact that they were not related to the emotional effects was established. Eye tracking showed effects of familiarity when the measurements before and after consumption of the yoghurts were compared. The results of the face reading test are not reported due to technical difficulties. Although liking itself was not correlated with the emotional effects in the emotive projection test, shifts in liking caused by consumption of the product did, indicating the emotional importance of pleasant surprise or disappointment in the confrontation between the expected and the actual experience of the product. Sensory differences in the fruit flavours had no effects on the emotional reactions, but change in fat content did, while vanilla flavour had a strong positive emotional effect.

Exploring student teachers' resistance to teacher education pedagogies
Bronkhorst, L.H. ; Koster, B. ; Meijer, P.C. ; Woldman, N. ; Vermunt, J.D. - \ 2014
Teaching and Teacher Education 40 (2014). - ISSN 0742-051X - p. 73 - 82.
deliberate practice - reflection - portfolio
Student teachers' resistance to teacher education is often understood as a lack of quality of the student teacher and/or the internship, and is expected to impede learning. In this study we suggest that resistance is interactive in nature, and can potentially have constructive outcomes. We engaged in a crosscase analysis of the resistance of two student teachers in a year-long teacher education program. Our results draw attention to diverse ways in which student teachers can engage in resistance, and to ways in which educators can support students in exploiting their resistance to benefit their learning. (C) 2014 Elsevier Ltd. All rights reserved.
A "Misfit" Theory of Spontaneous Conscious Odor Perception (MITSCOP): reflections on the role and function of odor memory in everyday life
Koster, E.P. ; Moller, P. ; Mojet, J. - \ 2014
Frontiers in Psychology 5 (2014). - ISSN 1664-1078
recognition memory - autobiographical memory - implicit memory - unrestrained eaters - quality perception - flavor memory - common odors - food - identification - smell
Our senses have developed as an answer to the world we live in (Gibson, 1966) and so have the forms of memory that accompany them. All senses serve different purposes and do so in different ways. In vision, where orientation and object recognition are important, memory is strongly linked to identification. In olfaction, the guardian of vital functions such as breathing and food ingestion, perhaps the most important (and least noticed and researched) role of odor memory is to help us not to notice the well-known odors or flavors in our everyday surroundings, but to react immediately to the unexpected ones. At the same time it provides us with a feeling of safety when our expectancies are met. All this happens without any smelling intention or conscious knowledge of our expectations. Identification by odor naming is not involved in this and people are notoriously bad at it. Odors are usually best identified via the episodic memory of the situation in which they once occurred. Spontaneous conscious odor perception normally only occurs in situations where attention is demanded, either because the inhaled air or the food smell is particularly good or particularly bad and people search for its source or because people want to actively enjoy the healthiness and pleasantness of their surroundings or food. Odor memory is concerned with novelty detection rather than with recollection of odors. In this paper, these points are illustrated with experimental results and their consequences for doing ecologically valid odor memory research are drawn. Furthermore, suggestions for ecologically valid research on everyday odor memory and some illustrative examples are given.
Olfactory Imagination and Odor Processing: Three Same-Different Experiments
Koster, E.P. ; Stelt, O. van der; Nixdorf, R.R. ; Linschoten, M.R.I. ; Mojet, J. ; Wijk, R.A. de - \ 2014
Chemosensory Perception 7 (2014)2. - ISSN 1936-5802 - p. 68 - 84.
reaction-times - betts questionnaire - imagery vividness - mental mixtures - visual-imagery - shortened form - error rates - food memory - perception - taste
Do people who claim to have olfactory imagination process odors more efficiently? In three same–different experiments, using all possible combinations of odors and odor names as primes and targets, selected high imagers (n¿=¿12) were faster (±230 ms; P¿
Agrarspekulation mit Indexfonds: Wie sie funktioniert. Was sie bewirkt.
Glauben, T. ; Prehm, Sören ; Pies, I. ; Will, M.G. ; Loy, J.P. ; Balmann, A. ; Brümmer, B. ; Heckelei, T. ; Hockmann, H. ; Kirschke, D. ; Köster, Ulrich ; Langhammer, R. ; Salhofer, K. ; Schmitz, Peter Michael ; Tangermann, S. ; Witzke, H. von; Wesseler, J.H.H. - \ 2013
Halle : Leibniz-Insitut fuer Agrarentwicklung in Mitten- und Osteuropa (IAMO) (IAMO Policy Brief 12)
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