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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Promoting Students’ Transitions to Successive VET Levels through Continuing Learning Pathways
Biemans, H.J.A. ; Mariën, H. ; Fleur, Erik ; Beliaeva, Tanya ; Harbers, Jan - \ 2019
Vocations and Learning: Studies in Vocational and Professional Education 12 (2019)2. - ISSN 1874-785X - p. 179 - 195.
Continuing learning pathways have been proposed as curriculum design solutions to reduce student drop-out rates and to promote their transitions to successive levels of the educational system. The present study aimed to compare the effects of a specific continuing learning pathway in Dutch VET (the Green Lyceum or GL, which combines a lower secondary pre-vocational school-based (VMBO) programme and a middle-management VET (MBO) programme in an integrated learning trajectory offered by agricultural (or ‘green’) VET institutes) with a more traditional route (a regular middle-management VET programme) in terms of students’ learning performance at MBO level and their transitions to a higher professional bachelor programme (HBO). GL students more often obtained a MBO diploma at EQF level 4 in the nominal study time period than comparable students in terms of cognitive level in regular MBO. Moreover, former GL students more often proceeded with an HBO programme than comparable students coming from regular MBO. Finally, students coming from the GL less often opted for HBO programmes in the agricultural domain than comparable students coming from regular ‘green’ MBO and more often decided to start with programmes corresponding with other sectors. To conclude, the combination of design characteristics of these continuing learning pathways seems to promote students’ transitions within the VET system and, thus, can inspire the design and implementation of comparable learning routes to solve transition problems.
Making sense of sensors in transition cow care
Hulsen, Jan ; Vreeburg, N. ; Eerdenburg, F.J.C.M. van; Hooijer, G. ; Hut, P. ; Harbers, Arnold ; Stassen, E.N. - \ 2018
Hoard's Dairyman (2018). - ISSN 0018-2885 - p. 265 - 265.
Using sensors to monitor behaviour at the dairy farm
Eerdenburg, F.J.C.M. van; Hut, P. ; Hooijer, G. ; Harbers, Arnold ; Stassen, E.N. ; Hulsen, Jan - \ 2017
In: Proceedings of the ISAE Benelux conference 2017 International Society for Applied Ethology (ISAE) - p. 20 - 20.
Using sensors to monitor behaviour at the dairy farm
Eerdenburg, Frank J.C.M. ; Hut, P. ; Hooijer, G. ; Harbers, A. ; Stassen, E.N. ; Hulsen, J. - \ 2017
In: Proceedings of the 7th International Conference on the Assessment of Animal Welfare at Farm and Group Level. - Wageningen : Wageningen Academic Publishers - ISBN 9789086863143 - p. 228 - 228.
Sensors can measure various types of behaviour automatically in a dairy herd. They can,therefore, be used to monitor a herd and the computer can detect deviations of normalbehaviour and give an attention to the farmer. In order to do so, normal baseline values areneeded. Since these may vary due to parity and housing conditions, the aim of this study wasto investigate the effects of parity and freestall bedding (cow matrass vs deep litter) on dailylying time, locomotion, standing and eating time from 42d a.p. – 28d p.p. Sixteen Dutch dairyfarms (3,158 cows) were used in this study and the number of steps per day, time of standingand lying (in sec/2 h period)and time eating (in sec/2 h) were collected by means of Nedapsmart tags (Groenlo, the Netherlands). Furthermore, in the first two weeks post-partum bloodsamples were collected to measure BHB levels. T-tests and timeseries were used for comparison.The results of locomotion revealed that primiparous cows made 833 (SD 132; P<0.001) moresteps on daily basis in comparison with multiparous cows. Animals housed on cow matrassesmade on daily basis on average 621 (SD 30; P<0.001) more steps vs animals in stalls with deeplitter bedding. Primiparous cows spent daily on average 64 minutes (SD 4.8; P<0.001) less timelying down and animals on farms with cow matrasses lie on daily basis around 30 (SD 17.3;P<0.001) minutes less when compared with animals housed on farms with deep litter bedding.The number of lying bouts increased from 6 to 9 per day 1 day before calving and decreased to7 per day after calving. The time lying per day decreased before calving. And the average lyingtime increases again in the first week post-partum. Cows that had a subclinical ketosis postpartumwere eating half an hour less during the dry period. Already 42 days before calving thisdifference could be observed. It became clear that with sensors differences in behaviour duringthe dry period can be detected that could lead to managerial interventions to reduce the riskfor diseases post-partum. This study is ongoing and more data will be obtained.
Het Groene Lyceum, een doorlopende leerlijn nader onderzocht
Harbers, J. ; Biemans, H.J.A. - \ 2016
Van Twaalf tot Achttien 26 (2016)2. - ISSN 1380-4731 - p. 36 - 37.
De kerk; De veranderde rol van kerkgebouwen in het publieke domein
Donk, W.B.H.J. van de; Janssen, J. - \ 2013
In: Bestemming gewijzigd; Moderniteit en stedelijke transformaties / Dijstelbloem, H., Hagendijk, R., Harbers, H., Terreehorst, P., Amsterdam : Universiteit van Amsterdam - p. 40 - 59.
Identification of Nucleotide Variation in Genomes Using Next-Generation Sequencing
Megens, H.J.W.C. ; Groenen, M.A.M. - \ 2012
In: Tag-Based Next Generation Sequencing / Harbers, M., Kahl, G., Weinheim, Germany : Wiley-VCH - ISBN 9783527328192 - p. 257 - 276.
Discovery of genome-wide variation has taken a huge leap forward with the introduction of next-generation sequencing (NGS) technology. Variant discovery requires sampling of a number of haplotypes. This can be either the two haplotypes of a diploid organism or multiple haplotypes in a population. Variant discovery can be done by sequencing pooled DNA and NGS makes it cost-effective to sample many haplotypes. In this chapter, we discuss various sequencing strategies for variation discovery, focusing mainly on single nucleotide polymorphisms, and to a lesser extent on short insertion/deletions (Indels). We discuss different options, such as specific library construction and the amount of sequencing required to meet a certain objective. While the benefits of NGS to their own research may be obvious to many researchers, the main obstacle for applying NGS is often practical - how to manipulate and analyze the amount of data from a typical NGS run. The methods therefore focus on practical considerations dealing with large NGS datasets, such as sequence processing and filtering, mapping to a reference genome, and variant calling. In addition, we focus on data standards and tools to manipulate and analyze data from such standardized datasets. By providing examples and links to easy-to-implement scripts and software, we hope to lower the threshold for biologists to further explore the wealth of information that can be obtained by these new molecular resources
Registratie robotbezoek en voeding [Koe & Wij]
Harbers, J. ; Groeneveld, L. ; Nistelrooy, J. van - \ 2007
melkveehouderij - melkkoeien - voedering - opname (intake) - weiden - begrazing - robots - melkproductie - dairy farming - dairy cows - feeding - intake - pastures - grazing - milk production
Melkveehouders Johan Harbers, Leen Groeneveld en Jan van Nistelrooy uit de AMS groep hebben het voortouw genomen bij de analyse van de voedingsregistraties. Hoewel de drie heren, maar ook de rest van de groep het moeilijk vonden om harde conclusies te verbinden aan de analyseresultaten, is er toch een aantal trends waargenomen
Efficacy of different doses of iodized peanut oil on iodine status of lactating women and their infants in a rural mountainous area in Guatemala
Eussen, S.J. ; Harbers, M. ; Mutsert, R. de; West, C.E. ; Heide, D. van der; Bulux, J. ; Romero-Abal, M.E. ; Solomons, N.W. - \ 2001
In: Annals of Nutrition & Metabolism : 17th International Congress of Nutrition, August 27-31, 2001, Vienna, Austria - p. 40 - 40.
The supplementation of iodized oil to lactating rural Guatemalan women improves their child's iodine status
Bulux, J. ; Eussen, S. ; Harbers, R. ; Mutsert, R. de; Romero-Abal, M.E. ; West, C.E. ; Solomons, N.W. - \ 2001
In: Annals of Nutrition & Metabolism : 17th International Congress of Nutrition, August 27-31, 2001, Vienna, Austria. - [S.l.] : [s.n.], 2001
Effects of Information Technology on Dairy Farms in The Netherlands: An Empirical Analysis of Milk Production Records
Asseldonk, M.A.P.M. van; Huirne, R.B.M. ; Dijkhuizen, A.A. ; Tomaszewski, M.A. ; Harbers, A.G.F. - \ 1998
Journal of Dairy Science 81 (1998)10. - ISSN 0022-0302 - p. 2752 - 2759.
This study empirically quantified the effects of the adoption of an automated concentrate feeder, on-line measurement of milk production, and activity measurement on milk production and reproduction. The data comprised annual results of Dutch farms operating in a milk quota system from 1987 to 1996; data included both adopters and nonadopters as well as farm results before and after adoption. The use of an automated concentrate feeder improved the annual carrier production of milk, milk protein, and milk fat (102, 4.95, and 5.52 kg per cow, respectively). In contrast, on-line measurement of milk production did not significantly affect milk production records. Calving interval was shortened by 5.7 d after the adoption of an activity measurement system but was not affected by the adoption of an automated concentrate feeder or by the measurement of on-line milk production.
L.M.R.V.-verslag van de N.P.K.-oefening kerncentrale Borssele op 3 december 1996
Harbers, J.A.C. ; Vries, P.H.U. de - \ 1997
Wageningen : DLO-Rijks-Kwaliteitsinstituut voor Land- en Tuinbouwprodukten (Rapport / RIKILT-DLO 97.15)
kernenergiecentrales - voedselkwaliteit - radioactiviteit - radionucliden - verval - nederland - nuclear power stations - food quality - radioactivity - radionuclides - decay - netherlands
In het kader van het Nationaal Plan Kernongevallenbestrijding is door het Crisismanagementteam van het Ministerie van VROM op 3 december 1996 een landelijke oefening georganiseerd. Het RIKILT-Steuncentrum en het Landelijk Meetnet Radioactiviteit in Voedsel hebben aan deze oefening deelgenomen. De resultaten in dit verslag laten zien dat de oefening zeer goed verlopen is. De deelnemers hebben een uitstekende inzet en operationele prestatle geleverd.
LMRV verslag van de NPK oefening Kerncentrale Borssele op 3 december 1996
Harbers, J.A.C. - \ 1997
Unknown Publisher (RIKILT-DLO rapport 97.15)
Bodemkaart van Nederland 1:50.000 : toelichting bij kaartblad 44 Oost Oosterhout
Harbers, P. ; Steur, G.L. ; Heijink, W. ; Bakker, H. de; Boersma, O.H. ; Hamming, C. - \ 1990
Wageningen : Staring Centrum - 164
bodemkarteringen - kaarten - nederland - noord-brabant - soil surveys - maps - netherlands
Bodemkaart van Nederland 1:50.000 : toelichting bij de herziene uitgave van blad 45 West 's-Hertogenbosch
Bles, B.J. ; Harbers, P. ; Visschers, R. ; Steur, G.G.L. ; Heijink, W. - \ 1984
Wageningen : STIBOKA - 7
bodemkarteringen - kaarten - nederland - noord-brabant - soil surveys - maps - netherlands
Bodemkaart van Nederland schaal 1 : 50.000 : toelichting bij de kaartbladen 41 West Aalten en 41 Oost Aalten
Harbers, P. ; Rosing, H. ; Steur, G.G.L. ; Heijink, W. - \ 1983
Wageningen : STIBOKA - 212
bodemkarteringen - kaarten - nederland - gelderland - achterhoek - soil surveys - maps - netherlands
Bodemkaart van Nederland 1 : 50.000 : toelichting bij kaartblad 38 Oost Gorinchem
Harbers, P. ; Steur, G.G.L. ; Heijink, W. - \ 1981
Wageningen : STIBOKA - 118
bodemkarteringen - kaarten - nederland - zuid-holland - betuwe - gelderland - soil surveys - maps - netherlands
De bodemgesteldheid van het ruilverkavelingsgebied Aalten
Kloosterhuis, J. ; Harbers, P. ; Wopereis, F. - \ 1968
Wageningen : STIBOKA (Rapport / Stichting voor Bodemkartering no. 688) - 128
ruilverkaveling - landgebruik - kaarten - ruimtelijke ordening - bodemkarteringen - achterhoek - gelderland - land consolidation - land use - maps - physical planning - soil surveys
De bodemgesteldheid van het ruilverkavelingsgebied Lek en Linge
Harbers, P. ; Jager, A. ; Kleinsman, W.B. - \ 1966
Wageningen : STIBOKA (Rapport / Stichting voor Bodemkartering no. 670) - 92
fruitteelt - grondvermogen - landevaluatie - kaarten - bodemgeschiktheid - bodemkarteringen - betuwe - gelderland - fruit growing - land capability - land evaluation - maps - soil suitability - soil surveys
Rivierklei als grondstof voor de baksteenindustrie
Harbers, P. - \ 1962
Wageningen : Stichting voor Bodemkartering - 15
bodemkarteringen - klei - bakstenen - bouwmaterialen - soil surveys - clay - bricks - building materials
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