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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Psychosocial correlates of the motivation to abstain from sexual intercourse among Indonesian adolescents
Leerlooijer, J.N. ; Ruiter, R.A.C. ; Damayanti, R. ; Rijsdijk, E. ; Eiling, E. ; Bos, A.E.R. ; Kok, G. - \ 2014
Tropical Medicine and International Health 19 (2014)1. - ISSN 1360-2276 - p. 74 - 82.
planned behavior - hiv prevention - condom use - predictors - model - intentions - metaanalysis - attitudes - efficacy - students
ObjectivesAdolescents in Indonesia have limited access to sexuality education, resulting in increased risk of sexually transmitted infections and unplanned pregnancies. This study aimed to understand psychosocial correlates of sexual abstinence intentions to inform future sexuality education. MethodsData were collected in 79 secondary schools among 2315 students, aged 14-20years, in Jambi, Lampung, Jakarta and Bali. A self-completed questionnaire measured attitudes, risk perception, subjective norms, perceived behavioural control and intentions towards sexual abstinence. ResultsSignificant associations with intention to abstain from sexual intercourse were found for experience with sexual intercourse, perceived behavioural control, attitude and subjective norms of peers and parents, explaining 31% of the variance in abstinence intention. ConclusionsTo promote adolescents' informed sexual decision-making, sexuality education programmes in Indonesia may benefit from addressing past sexual behaviour and perceived behavioural control, subjective norms of peers and attitudes.
Applying Intervention Mapping to develop a community-based intervention aimed at improved psychological and social well-being of unmarried teenage mothers in Uganda
Leerlooijer, J.N. ; Kok, G. ; Weyusya, J. ; Bos, A.E.R. ; Ruiter, R.A.C. ; Rijsdijk, E. ; Nshakira, N. ; Bartholomew, L.K. - \ 2014
Health Education Research 29 (2014)4. - ISSN 0268-1153 - p. 598 - 610.
hiv-1 infection - parenting teens - rural uganda - pregnancy - stigma - metaanalysis - adolescents - prevention - behavior - program
Out-of-wedlock pregnancy among adolescents in sub-Saharan Africa is a major concern, because of its association with health, social, psychological, economic and demographic factors. This article describes the development of the Teenage Mothers Project, a community-based intervention to improve psychological and social well-being of unmarried teenage mothers in rural Uganda. We used Intervention Mapping (IM) for systematically developing a theory and evidence-based comprehensive health promotion programme. A planning group consisting of community leaders, teenage mothers, staff of a community-based organization and a health promotion professional was involved in the six steps of IM: needs assessment, programme objectives, methods and applications, intervention design, planning for adoption and implementation and planning for evaluation. The programme includes five intervention components: community awareness raising, teenage mother support groups, formal education and income generation, counselling, and advocacy. The intervention components are based on a variety of theoretical methods, including entertainment education, persuasive communication, mobilization of social networks and social action. In conclusion, IM facilitated the planning group to structure the iterative, bottom-up, participatory design of the project in a real-life setting and to use evidence and theory. The article provides suggestions for the planning of support interventions for unmarried teenage mothers.
Implementation of The World Starts With Me, a comprehensive rights-based sex education programme in Uganda
Rijsdijk, L.E. ; Bos, A.E.R. ; Lie, R. ; Leerlooijer, J.N. ; Eiling, E. ; Atema, V. ; Gebhardt, W.A. ; Ruiter, R.A.C. - \ 2014
Health Education Research 29 (2014)2. - ISSN 0268-1153 - p. 340 - 353.
south-african schools - sub-saharan africa - secondary-schools - aids education - health-promotion - hiv prevention - hiv/aids - interventions - outcomes - fidelity
This article presents a process evaluation of the implementation of the sex education programme the World Starts With Me (WSWM) for secondary school students in Uganda. The purpose of this mixed-methods study was to examine factors associated with dose delivered (number of lessons implemented) and fidelity of implementation (implementation according to the manual), as well as to identify the main barriers and facilitators of implementation. Teachers’ confidence in teaching WSWM was negatively associated with dose delivered. Confidence in educating and discussing sexuality issues in class was positively associated with fidelity of implementation, whereas the importance teachers attached to open sex education showed a negative association with fidelity. Main barriers for implementing WSWM were lack of time, unavailability of computers, lack of student manuals and lack of financial support and rewards. Other barriers for successful implementation were related to high turnover of staff and insufficient training and guidance of teachers. Teachers’ beliefs/attitudes towards sexuality of adolescents, condom use and sex education were found to be important socio-cognitive factors intervening with full fidelity of implementation. These findings can be used to improve the intervention implementation and to better plan for large-scale dissemination of school-based sex education programmes in sub-Saharan Africa.
The world starts with me. Promoting sexual and reproductive health and rights of adolescents in Uganda
Rijsdijk, E. - \ 2013
Maastricht University. Promotor(en): R.A.C. Ruiter, co-promotor(en): A.E.R. Bos; Rico Lie. - Maastricht : Universitaire Pers Maastricht - 202 p.
Qualitative evaluation of the Teenage Mothers Project in Uganda: a community-based empowerment intervention for unmarried teenage mothers
Leerlooijer, J.N. ; Bos, A.E.R. ; Ruiter, R.A.C. ; Reeuwijk, M.A.J. van; Rijsdijk, E. ; Nshakira, N. ; Kok, G. - \ 2013
BMC Public Health 13 (2013). - ISSN 1471-2458 - 15 p.
intimate-partner violence - sub-saharan africa - hiv prevention - south-africa - health - adolescents - stigma - risk - trends - school
Background A large proportion of unmarried teenage mothers in Uganda face physical, psychological, and social problems after pregnancy and childbirth, such as obstetric complications, lack of education, and stigmatisation in their communities. The Teenage Mothers Project (TMP) in Eastern Uganda empowers unmarried teenage mothers to cope with the consequences of early pregnancy and motherhood. Since 2000, 1036 unmarried teenage mothers, their parents, and community leaders participated in economic and social empowerment interventions. The present study explored the changes resulting from the TMP as well as factors that either enabled or inhibited these changes. Methods Semi-structured interviews (N¿=¿23) were conducted with former teenage mothers , community leaders, and project implementers, and lifeline histories were obtained from former teenage mothers (N¿=¿9). Quantitative monitoring data regarding demographic and social characteristics of teenage mother participants (N¿=¿1036) were analysed. Results The findings suggest that, overall, the TMP seems to have contributed to the well-being of unmarried teenage mothers and to a supportive social environment. It appears that the project contributed to supportive community norms towards teenage mothers’ position and future opportunities, increased agency, improved coping with early motherhood and stigma, continued education, and increased income generation by teenage mothers. The study findings also suggest limited change in disapproving community norms regarding out-of-wedlock sex and pregnancy, late active enrolment of teenage mothers in the project (i.e., ten months after delivery of the child), and differences in the extent to which parents provided support. Conclusions It is concluded that strengths of the community-based TMP seem to be its socio-ecological approach, the participatory planning with community leaders and other stakeholders, counselling of parents and unmarried teenage mothers, and the emphasis on education and income generation. The project can improve by earlier active participation of unmarried pregnant adolescents and increased support for parents.
Sexual and reproductive health and rights: implications for comprehensive sex education among young people in Uganda
Rijsdijk, L.E. ; Lie, R. ; Bos, A.E.R. ; Leerlooijer, J.N. ; Kok, G. - \ 2013
Sex Education: Sexuality, Society and Learning 13 (2013)4. - ISSN 1468-1811 - p. 409 - 422.
gender - hiv
This paper presents the findings from an explorative study comparing sexual and reproductive health and rights (SRHR) against local realities for young people in Uganda. This was done by analysing statements by Ugandan adolescents extracted from focus group discussions relating to two SRHRs central in this research: (1) the right of young people to complete and accurate information; and (2) the right to self-determination. We found discrepancies between these universally formulated rights and the (political, economic and community) context young Ugandans live in. Consequently, we argue how comprehensive rights-based sex education should take this local reality into account to make SRHR meaningful for Ugandan adolescents. Implications for the content, form and context of comprehensive rights-based sex education are discussed.
Sexual and Reproductive Health and Rights: Implications for comprehensive sex education among adolescents in Uganda
Rijsdijk, Liesbeth - \ 2012
Correlates of Delayed Sexual Intercourse and Condom Use among Adolescents in Uganda: a cross-sectional study
Rijsdijk, L.E. ; Bos, A.E.R. ; Lie, R. ; Ruiter, R.A.C. ; Leerlooijer, J.N. ; Kok, G. - \ 2012
BMC Public Health 12 (2012). - ISSN 1471-2458 - 19 p.
sub-saharan africa - planned behavior - south-africa - reproductive health - university-students - multilevel analysis - reasoned action - determinants - youth - risk
Background - Comprehensive sex education, including the promotion of consistent condom use, is still an important intervention strategy in tackling unplanned pregnancies, HIV/AIDS and sexually transmitted infections (STIs) among Ugandan adolescents. This study examines predictors of the intention to use a condom and the intention to delay sexual intercourse among secondary school students (aged 12–20) in Uganda. Methods - A school-based sample was drawn from 48 secondary schools throughout Uganda. Participants (N¿=¿1978) completed a survey in English measuring beliefs regarding pregnancy, STIs and HIV and AIDS, attitudes, social norms and self-efficacy towards condom use and abstinence/delay, intention to use a condom and intention to delay sexual intercourse. As secondary sexual abstinence is one of the recommended ways for preventing HIV, STIs and unplanned pregnancies among the sexually experienced, participants with and without previous sexual experience were compared. Results - For adolescents without sexual experience (virgins), self-efficacy, perceived social norms and attitude towards condom use predicted the intention to use condoms. Among those with sexual experience (non-virgins), only perceived social norm was a significant predictor. The intention to delay sexual intercourse was, however, predicted similarly for both groups, with attitudes, perceived social norm and self-efficacy being significant predictors. Conclusions This study has established relevant predictors of intentions of safe sex among young Ugandans and has shown that the intention to use condoms is motivated by different factors depending on previous sexual experience. A segmented approach to intervention development and implementation is thus recommended
The World Starts With Me: A multilevel evaluation of a comprehensive sex education programme targeting adolescents in Uganda
Rijsdijk, L.E. ; Bos, A.E.R. ; Ruiter, R.A.C. ; Leerlooijer, J.N. ; Haas, B. ; Schaalma, H.P. - \ 2011
BMC Public Health 11 (2011). - ISSN 1471-2458 - 12 p.
sub-saharan africa - planned behavior - reproductive health - condom use - interventions - metaanalysis - students
Background This paper evaluates the effect of the World Starts With Me (WSWM), a comprehensive sex education programme in secondary schools in Uganda. The aim of the present study was to assess the effects of WSWM on socio-cognitive determinants of safe sex behaviour (delay; condom use and non-coercive sex). Methods A survey was conducted both before and immediately after the intervention among students in intervention (N = 853) and comparison (N = 1011) groups. A mixed model repeated measures analysis was performed to assess the effectiveness of the WSWM programme on the main socio-cognitive determinants of safe sex behaviour at post-test. A similar post-hoc comparison was made between schools based on completeness and fidelity of implementation of WSWM. Results Significant positive effects of WSMW were found on beliefs regarding what could or could not prevent pregnancy, the perceived social norm towards delaying sexual intercourse, and the intention to delay sexual intercourse. Furthermore, significant positive effects of WSWM were found on attitudes, self-efficacy and intention towards condom use and on self-efficacy in dealing with sexual violence (pressure and force for unwanted sex). A reversed effect of intervention was found on knowledge scores relating to non-causes of HIV (petting, fondling and deep kissing). A follow-up comparison between intervention schools based on completeness of the programme implementation revealed that almost all significant positive effects disappeared for those schools that only implemented up to 7 out of 14 lessons. Another follow-up analysis on the basis of implementation fidelity showed that schools with a "partial" fidelity score yielded more significant positive effects than schools with a "full" fidelity of implementation score. Conclusions The study showed an intervention effect on a number of socio-cognitive determinants. However, the effectiveness of WSWM could be improved by giving more systematic attention to the context in which such a programme is to be implemented. Implications for the systematic development and implementation of school-based safe sex interventions in Uganda will be discussed.
Participatory Approaches as Part of Intervention Mapping to Develop a Cultural Sensitive Comprehensive Sexuality Education Program: the Example of The World Starts With Me in Uganda
Rijsdijk, Liesbeth - \ 2010
Tomatenteelt met een beperkte gasaansluitwaarde
Esmeijer, M.H. - \ 2004
Naaldwijk : Praktijkonderzoek Plant & Omgeving B.V. (Rapporten PPO ) - 41
solanum lycopersicum - tomaten - energie - energiegebruik - energiebehoud - brandstofverbruik - nederland - glastuinbouw - tomatoes - energy - energy consumption - energy conservation - fuel consumption - netherlands - greenhouse horticulture
De liberalisering van de gasmarkt leidde tot een nieuwe methode van tariefberekening voor het gasverbruik, waarbij de gasafname per uur bepalend werd. Overschrijden van de afgesproken afname per uur zou tot hoge boetes leidden. In theorie is het mogelijk om tomaten met een aansluitwaarde van 100 à 120 m3 gas per hectare per uur te telen (Rijsdijk, 2000). Deze getallen zijn gebaseerd op een gesimuleerde oneindige grote kas. In de praktijk zijn kassen eindig en zorgen de gevels voor extra warmte verlies, zodat dit voor praktijkkassen een aansluitwaarde van 110 à 130 m3 betekent. Onbekend was echter wat dit betekende voor de kwaliteit en productie van tomaten. Een lage aansluitwaarde was volgens Rijsdijk (2000) alleen te realiseren met behulp van een scherm. Tomatentuinders staan huiverig tegenover een scherm. Om aan te tonen dat het daadwerkelijk mogelijk is om met een lage aansluitwaarde en gebruik van een scherm een goede tomatenteelt neer te zetten werd in seizoen 2001-2002 een experiment uitgevoerd op het proefstation. Omdat de Westlandse winters over het algemeen milder zijn dan in de rest van Nederland werd gekozen voor de aansluitwaarde van 100 m3 gas/ha/uur.
Voorkomen van Japanse roest bij chrysant door regelen op dauwpuntstemperatuur : effecten op energiegebruik en gewas in vergelijk met een standaard herfstteelt
Rijsdijk, A.A. ; Bartels, C.A.M. - \ 2000
Naaldwijk : Proefstation voor Bloemisterij en Glasgroente, Vestiging Naaldwijk (Rapport / Proefstation voor Bloemisterij en Glasgroente 284) - 21
chrysanthemum - snijbloemen - roestziekten - temperatuur - dauwpunt - regulatie - nederland - cut flowers - rust diseases - temperature - dewpoint - regulation - netherlands
Temperatuurgrenzen aan de teelt van tomaat bij minimaliseren van de gasaansluitwaarde. Fase 1: voorstudie temperatuurval en technische oplossingen
Rijsdijk, A.A. - \ 2000
Naaldwijk : Proefstation voor Bloemisterij en Glasgroente, Vestiging Naaldwijk (Rapport / Proefstation voor Bloemisterij en Glasgroente 285) - 23
solanum lycopersicum - tomaten - temperatuur - brandstofverbruik - landbouwtechniek - nederland - glastuinbouw - tomatoes - temperature - fuel consumption - agricultural engineering - netherlands - greenhouse horticulture
Scherm en kasklimaat
Knies, P. ; Rijsdijk, A.A. - \ 2000
In: Schermen in de glastuinbouw; energie en teeltaspecten / van den Berg, G.A.,
Mogelijkheden voor energiebesparing door temperatuurintegratie bij siergewassen : toetsen van een meerdaags integrerende temperatuurregeling onder realistische teeltomstandigheden
Buwalda, F. ; Rijsdijk, A.A. ; Leeuwen, G.J.L. van - \ 1999
Aalsmeer : Proefstation voor Bloemisterij en Glasgroente, Vestiging Aalsmeer (Rapport / Proefstation voor Bloemisterij en Glasgroente 176) - 34
sierplanten - energiebehoud - temperatuur - teelt onder bescherming - kassen - klimaat - nederland - ornamental plants - energy conservation - temperature - protected cultivation - greenhouses - climate - netherlands
Temperatuurintegratie op etmaalbasis : onderzoek op PBG en praktijkbedrijven bij potplanten, roos en paprika
Rijsdijk, A.A. ; Vogelezang, J.V.M. ; Leeuwen, G.J.L. van - \ 1998
Naaldwijk : Proefstation voor Bloemisterij en Glasgroente, Vestiging Naaldwijk (Rapport / Proefstation voor Bloemisterij en Glasgroente 135) - 73
potplanten - rozen - capsicum - energiebehoud - kassen - temperatuur - pot plants - roses - energy conservation - greenhouses - temperature
Energiezuinige klimaatbeheersing en -regeling. Klimaatregeling
Meurs, W.Th.M. van; Rijsdijk, A.A. - \ 1998
In: Kas van de Toekomst, eindrapportage, september 1998 - p. 54 - 60.
Normering van meetnauwkeurigheden van klimaatmetingen in praktijkkassen : protocol met normen voor meetsystemen en procedure voor controlemeting
Ruiter, H.W. de; Rijsdijk, A.A. - \ 1997
Naaldwijk : Proefstation voor Bloemisterij en Glasgroente (Rapport / Proefstation voor Bloemisterij en Glasgroente 101) - 32
kassen - klimaat - methodologie - meting - nauwkeurigheid - glastuinbouw - greenhouses - climate - methodology - measurement - accuracy - greenhouse horticulture
Inventarisatie gebruik minimum buistemperatuur op tomatenbedrijven : een orienterend onderzoek
Rijsdijk, A.A. - \ 1996
Naaldwijk : Proefstation voor Bloemisterij en Glasgroente (Rapport / Proefstation voor Bloemisterij en Glasgroente 32) - 49
teelt onder bescherming - verwarming - energie - solanum lycopersicum - tomaten - nederland - energiebesparing - protected cultivation - heating - energy - tomatoes - netherlands - energy saving
Het gebruik van energieschermen bij tomaat
Sluis, B.J. van der; Rijsdijk, A.A. ; Holsteijn, G.P.A. van - \ 1995
Den Haag : LEI-DLO (Publikatie / Landbouw-Economisch Instituut (LEI-DLO) 4.138) - ISBN 9789052423067 - 86
klimaat - energiebehoud - kassen - verwarming - solanum lycopersicum - tomaten - ventilatie - binnenklimaat - glastuinbouw - climate - energy conservation - greenhouses - heating - tomatoes - ventilation - indoor climate - greenhouse horticulture
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