2013, Article in monograph or in proceedings (International Conference on Agricultural Engineering)There are several greenhouses built with solar panels integrated into the roof. In summer time this will operate very well, although broad shadow stripes can result in growth and yield differences. In winter the amount of sunlight is further limited by the solar panels and will result in further reduction of light accession to the cultivation space. As a result, the crops suffer from growth problems. These drawbacks are eliminated by the application of Concentrating Power Systems (CSP) with Fresnel lenses. A Fresnel lens works like a normal lens but is much thinner. When the sun shines, the lens receives both direct and indirect sunlight. The lens will concentrate all direct sunlight, which can be collected as thermal energy in the focal point. This
absorbed radiation can be converted with an absorption cooler into cold water for cooling. This cold water can cool the greenhouse without the need of water use. The indirect solar radiation, the diffuse light will not focus and is therefore available as a fairly constant light source in the building or in the greenhouse. The capture of all direct radiation at high intensities will diminish the incoming heat load, which is useful for a better internal climate control of greenhouses and buildings. This lower heat load makes it easier to keep the greenhouse cool with the absorber. In this study the details of energy flows and thermal conversion with absorption cooler is determined. Calculation shows a 47% heat load reduction (from 337 W/m2 to 157 W/m2) with the Fresnel lenses in the covering of the greenhouse. In the case of the collector in focus, only 48% of the captured direct radiation, available as thermal energy, is required to cool the greenhouse further with an absorption cooler. Cooling a greenhouse can result in up to 90% reduction in water consumption of the cultivation. The possibility of light regulation is another important advantage the Fresnel lenses have. The light amount can vary between 15 – 77% of the incoming radiation. The access of the generated energy can be used for extra illumination (light and energy regulation) and/or energy supply and/or a desalination system.
2020, Article / Letter to editor (European Spine Journal, vol. 29, iss. 7, (2020), pp. 1660-1670)PURPOSE: To conduct a meta-analysis to describe clinical course of pain and disability in adult patients post-lumbar discectomy (PROSPERO: CRD42015020806). METHODS: Sensitive topic-based search strategy designed for individual databases was conducted. Patients (>n16 years) following first-time lumbar discectomy for sciatica/radiculopathy with no complications, investigated in inception (point of surgery) prospective cohort studies, were included. Studies including revision surgery or not published in English were excluded. Two reviewers independently searched information sources, assessed eligibility at title/abstract and full-text stages, extracted data, assessed risk of bias (modified QUIPs) and assessed GRADE. Authors were contacted to request raw data where data/variance data were missing. Meta-analyses evaluated outcomes at all available time points using the variance-weighted mean in random-effect meta-analyses. Means and 95% CIs were plotted over time for measurements reported on outcomes of leg pain, back pain and disability. RESULTS: A total of 87 studies (nn=n31,034) at risk of bias (49 moderate, 38 high) were included. Clinically relevant improvements immediately following surgery (>nMCID) for leg pain (0-10, mean before surgery 7.04, 50 studies, nn=n14,910 participants) and disability were identified (0-100, mean before surgery 53.33, 48 studies, nn=n15,037). Back pain also improved (0-10, mean before surgery 4.72, 53 studies, nn=n14,877). Improvement in all outcomes was maintained (to 7 years). Meta-regression analyses to assess the relationship between outcome data and a priori potential covariates found preoperative back pain and disability predictive for outcome. CONCLUSION: Moderate-level evidence supports clinically relevant immediate improvement in leg pain and disability following lumbar discectomy with accompanying improvements in back pain. These slides can be retrieved under Electronic Supplementary Material.
2020, Article / Letter to editor (Nutrition & Dietetics: Journal of Dietitians Australia, vol. 77, iss. 4, (2020), pp. 416-425)This position statement describes the recommendations of the Clinical Oncology Society of Australia (COSA) regarding management of cancer-related malnutrition and sarcopenia. A multidisciplinary working group completed a review of the literature, focused on evidence-based guidelines, systematic reviews and meta-analyses, to develop recommendations for the position statement. National consultation of the position statement content was undertaken through COSA members. All people with cancer should be screened for malnutrition and sarcopenia in all health settings at diagnosis and as the clinical situation changes throughout treatment and recovery. People identified as "at risk" of malnutrition or with a high-risk cancer diagnosis or treatment plan should have a comprehensive nutrition assessment; people identified as "at risk" of sarcopenia should have a comprehensive evaluation of muscle status using a combination of assessments for muscle mass, muscle strength and function. All people with cancer-related malnutrition and sarcopenia should have access to the core components of treatment, including medical nutrition therapy, targeted exercise prescription and physical and psychological symptom management. Treatment for cancer-related malnutrition and sarcopenia should be individualised, in collaboration with the multidisciplinary team (MDT), and tailored to meet needs at each stage of cancer treatment. Health services should ensure a broad range of health care professionals across the MDT have the skills and confidence to recognise malnutrition and sarcopenia to facilitate timely referrals and treatment. The position statement is expected to provide guidance at a national level to improve the multidisciplinary management of cancer-related malnutrition and sarcopenia.
2010, Part of book or chapter of book (, pp. 143-160)Een bedrijf heeft competente medewerkers nodig om klanten te kunnen voorzien van goederen en diensten. Stel nu eens dat we een competente medewerker zien als een product. Niet omdat mensen producten zijn, maar omdat we de indruk hebben dat er met producten zorgvuldiger wordt omgesprongen dan met mensen. We nemen die zorgvuldigheid als minimum en stellen de vraag: In welk proces komt de competente medewerker tot stand? Dan zien we activiteiten van de leidinggevende, van collega’s, van de HR-afdeling, van trainers, van het (hoger, middelbaar en primair) onderwijs, van ouders, en niet te vergeten van de betrokkene zelf. En het valt ons dan op dat er geen regie is in deze keten van activiteiten die zorgt voor zorgvuldige afstemming. Het streven naar één regisseur is het najagen van een fictie. Maar accepteren we dan dat iedere schakel voor zichzelf werkt en niemand voor het geheel? Dan halen we niet de norm van de minimale zorgvuldigheid. Laten we dan serieus werk maken van het alternatief dat iedere actor een stuk regie pakt door zijn beslissingen te nemen met het oog op het optimaliseren van de hele keten en niet alleen van het eigen stuk daarin. Dan is iedere actor (bedrijf, school, uitzendbureau, individu enzovoort) verantwoordelijk voor het zoeken van samenwerking in het ontwikkelen van competente medewerkers. Geen enkele partij is eigenstandig in staat de geïntegreerde leersituatie tot stand te brengen die nodig is voor ompetentieontwikkeling, vandaar cocreatie. Hoe dan de spanning te hanteren tussen de verschillende paradigma’s? Het bedrijfskundige paradigma is gericht op werkprocessen, productiviteit, markt en geld verdienen. Het onderwijskundig paradigma is gericht op leerprocessen, competentie, studentenstromen en diploma’s. En dan heb je nog het leven zelf, van jongeren, van volwassenen, met keuzes die zich vaak aan beide paradigma’s onttrekken.
2011, Book review ((2011))De grote winst van dit boek is dat het autismeteams in Nederland in staat stelt een goed beschreven groepstherapie uit te voeren. Cognitieve gedragtherapeutische principes worden weliswaar al in verschillende vormen toegepast in de autismehulpverlening, maar het ontbreekt nog aan uitgewerkte programma’s die kunnen worden uitgewisseld. De volgende stap zou nu moeten zijn om de werkzaamheid ervan vast te stellen.
2013, Article in monograph or in proceedings (Conceptual Modeling - 32th International Conference, ER 2013, Hong-Kong, China, November 11-13, 2013, Proceedings)
2017, Article / Letter to editor (BMC Health Services Research, vol. 17, (2017))Background: Increasingly, nurse practitioners (NPs) are deployed in teams along with general practitioners (GPs) to help meet the demand for out-of-hours care. The purpose of this study was to explore factors influencing collaboration between GPs and NPs in teams working out-of-hours. Methods: A descriptive qualitative study was done using a total of 27 semi-structured interviews and two focus group discussions. Data was collected between June, 2014 and October, 2015 at an out-of-hours primary care organisation in the Netherlands. Overall, 38 health professionals (GPs, NPs, and support staff) participated in the study. The interviews were audio-taped and transcribed verbatim. Two researchers conducted an inductive content analysis, involving the identification of relevant items in a first phase and clustering into themes in a second phase. Results: The following four themes emerged from the data: clarity of NP role and regulation, shared caseload and use of skills, communication concerning professional roles, trust and support in NP practice. Main factors influencing collaboration between GPs and NPs included a lack of knowledge regarding the NPs' scope of practice and regulations governing NP role; differences in teams in sharing caseload and using each other's skills effectively; varying support of GPs for the NP role; and limited communication between GPs and NPs regarding professional roles during the shift. Lack of collaboration was perceived to result in an increased risk of delay for patients who needed treatment from a GP, especially in teams with more NPs. Collaboration was not perceived to improve over time as teams varied across shifts. Conclusion: In out-of-hours primary care teams constantly change and team members are often unfamiliar with each other or other's competences. In this environment, knowledge and communication about team members' roles is continuously at stake. Especially in teams with more NPs, team members need to use each other's skills to deliver care to all patients on time.
2018, Article in monograph or in proceedings (Joint Proceedings of REFSQ-2018 Workshops, Doctoral Symposium, Live Studies Track, and Poster Trackco-located with the 23rd International Conference on Requirements Engineering: Foundation for Software Quality (REFSQ 2018))
2018, Article in monograph or in proceedings (Keynote at the Social Work Master Programs Summer School 2018, "Social work and cooperation: two of a kind?")
2017, Article / Letter to editor (Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, vol. 122, iss. 1, (2017), pp. 210-213)
2022, Article / Letter to editor (Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology, vol. 132, iss. 5, (2022), pp. 1323-1324)
2009, Article / Letter to editor (Scandinavian Journal of Work, Environment & Health, vol. 35, iss. 4, (2009), pp. 261-281)OBJECTIVE: Based on prospective and retrospective disease cohort studies, the aim of this review was to determine common prognostic factors for work disability among employees with rheumatoid arthritis, asthma, chronic obstructive pulmonary disease, diabetes mellitus, and ischemic heart disease (IHD). METHODS: A systematic literature search in Medline (1990-2008) and Embase (1990-2008) was carried out to identify relevant cohort studies using a well-defined list of inclusion and quality criteria. RESULTS: We identified 43 relevant cohort studies with sufficient methodological quality (20 for rheumatoid arthritis, 3 for asthma and 20 for IHD). The common prognostic factors for work disability found in all the diseases were: perceived health complaints, limitation in daily physical activities caused by the disease (high versus low), heavy manual work, and female gender. The common positive prognostic factors for rheumatoid arthritis and IHD were age (high versus low) and sickness absence. The common negative factors for rheumatoid arthritis and IHD were education (high versus low) and ethnic origin (white versus non-white). CONCLUSIONS: As many prognostic factors for work disability are similar for employees with various chronic diseases, it is possible to detect high risk groups. This information supports the development and implementation of a general disability management intervention for employees suffering from a chronic disease to overcome health-related limitations at work.
2017, Part of book or chapter of book (, pp. 126-129)De afgestudeerde van de toekomst is flexibel en wendbaar en beschikt over de vaardigheden die hem of haar in staat stellen om goed om te gaan met de continue stroom aan nieuwe ontwikkelingen. Om studenten goed voor te bereiden op het veranderende communicatievak in een dynamische en complexe context is het noodzakelijk in de opleiding al aandacht te schenken aan 21st century skills als kritisch kunnen denken, creativiteit en probleemoplossend vermogen. Ook moeten we de persoonlijke ontwikkeling van de student een belangrijke plaats geven in het curriculum.
2008, Article / Letter to editor (Levende Talen Tijdschrift, vol. 9, iss. 3, (2008), pp. 21-29)Wat moeten hbo-studenten kennen en kunnen om competent te kunnen communiceren in het Nederlands als ze na hun opleiding de arbeidsmarkt betreden? Wat betekent dat voor de invulling van een onderwijsprogramma? Dat zijn vragen die bij menige opleiding spelen. In deze bijdrage wordt een model gepresenteerd dat als basis kan dienen voor het opstellen van een doorlopende leerlijn van de communicatieve competentie in het Nederlands.
2010, Article in monograph or in proceedings (-Proceedings of the 2nd European Conference on Intellectual Capital)This paper is about helping human resource development professionals to understand how community of practice theory can inform the design of learning-based programs in order to link individual and organizational learning better. Learning is often considered a major contributor to the success or failure of an organization and, through learning, organizations develop new, and possibly rare competencies that enables them to gain or sustain a lasting competitive advantage and continued sustainable growth. This is an investment in human capital. The purpose of this research is thus to see how communities of practice, as part of a management development trajectory, can serve as the link between individual and organizational learning thus increasing effectiveness of the program. An analytical inductive approach was taken to the research. First, a review of the literature on communities of practice, individual, group and organizational learning led to the development of an analytical framework for understanding learning at each level, and how they could be linked. Quantitative data from participant surveys and qualitative data from a longitudinal case study was used to test the framework. The research showed that individual learning and group innovation are intertwined process occurring naturally in communities of practice. According to the analytical framework developed for this study, organizing communities of practice as part of human resource development trajectories is a valid strategy for increasing their effectiveness. The research has some limitations. For example, factors important to the functioning of the community of practice itself were not assessed or considered. Variations in learning might be attributed to the quality of implementation, guidance, or other unknown reasons and so might have affected the results. There are several practical implications to this work. Most important is the framework for understanding how communities of practice are linked to organizational learning - this can help designers of management development trajectories to improve effectiveness. Also, the added value of human resource development programs can be easier shown. This research is original in being a first attempt at empirically linking human resource development trajectories, communities of practice and organizational learning.
2022, Part of book or chapter of book (Lange, A.H. de; Heijden, B.I.J.M. van der (ed.), Een leven lang inzetbaar? Duurzame inzetbaarheid., pp. 299-316)
2012, Article / Letter to editor (Gait & Posture, vol. 36, iss. 1, (2012), pp. 127-132)The objective of the present study was to examine the attentional demands of gait adaptations required to walk over irregular terrain in community-dwelling people with chronic stroke. Eight community ambulators (>6 months post-stroke, aged 57 ± 15 years) and eight age-matched healthy controls participated in the study. As the primary motor task, participants walked on a treadmill while they quickly reacted to a sudden obstacle in front of the affected (in the stroke group) or left (in healthy controls) leg. The secondary, cognitive task was an auditory Stroop task. Outcomes were avoidance success rate and muscle reaction times of the biceps and rectus femoris (motor task), and a composite score of accuracy and verbal reaction time (cognitive task). Success rates did not differ between single- and dual-task conditions in either group, while muscle reaction times deteriorated equally during the dual task in both groups. However, compared with the Stroop scores just before and after obstacle crossing, the scores while crossing the obstacle deteriorated more in the stroke group than in the controls (p=0.012). The higher dual-task costs on the Stroop task reflect greater attentional demands during walking and crossing obstacles. The absence of dual-task effects on obstacle avoidance performance suggests that the people with stroke used a "posture-first strategy". The results imply that common daily life tasks such as obstacle crossing while walking require disproportionate attention even in well-recovered people with stroke.
2022, Article / Letter to editor (Clinical Nutrition, vol. 41, iss. 5, (2022), pp. 1102-1111)BACKGROUND & AIMS: The Global Leadership Initiative on Malnutrition (GLIM) criteria require validation in various clinical populations. This study determined the prevalence of malnutrition in people with cancer using all possible diagnostic combinations of GLIM etiologic and phenotypic criteria and determined the combinations that best predicted mortality and unplanned hospital admission within 30 days. METHODS: The GLIM criteria were applied, in a cohort of participants from two cancer malnutrition point prevalence studies (N = 2801), using 21 combinations of the phenotypic (≥5% unintentional weight loss, body mass index [BMI], subjective assessment of muscle stores [from PG-SGA]) and etiologic (reduced food intake, inflammation [using metastatic disease as a proxy]) criteria. Machine learning approaches were applied to predict 30-day mortality and unplanned admission. RESULTS: We analysed 2492 participants after excluding those with missing data. Overall, 19% (n = 485) of participants were malnourished. The most common GLIM combinations were weight loss and reduced food intake (15%, n = 376), and low muscle mass and reduced food intake (12%, n = 298). Machine learning models demonstrated malnutrition diagnosis by weight loss and reduced muscle mass plus either reduced food intake or inflammation were the most important combinations to predict mortality at 30-days (accuracy 88%). Malnutrition diagnosis by weight loss or reduced muscle mass plus reduced food intake was most important for predicting unplanned admission within 30-days (accuracy 77%). CONCLUSIONS: Machine learning demonstrated that the phenotypic criteria of weight loss and reduced muscle mass combined with either etiologic criteria were important for predicting mortality. In contrast, the etiologic criteria of reduced food intake in combination with weight loss or reduced muscle mass was important for predicting unplanned admission. Understanding the phenotypic and etiologic criteria contributing to the GLIM diagnosis is important in clinical practice to identify people with cancer at higher risk of adverse outcomes.
2013, Article / Letter to editor (Journal of Vocational Behavior, vol. 83, iss. 1, (2013), pp. 68-77)In order to better understand the precursors of bridge employment, this study aimed to investigate whether individual action strategies in terms of selection, optimization, and compensation (SOC; Baltes & Baltes, 1990) are able to buffer the well-known negative impact of poor health on the intention to remain in the workforce. 784 employees (60–85 years, 74.8% male) affiliated with a temporary employment agency that specifically contracts employees older than 65 participated in a cross-sectional survey. Results of moderated hierarchical regression analyses indicated that for older employees with high use of SOC there was no significant relationship between health status and intention to remain in bridge employment. However, for older employees with low use of SOC, there was a weaker intention to remain in bridge employment when their health status was poor, while this intention was stronger in case of a better health status. On closer examination of the SOC subdimensions, this moderating effect was especially due to the compensation behavior of these older workers. As a conclusion, SOC seems to mitigate the detrimental effects of health problems on older employees intention to remain in bridge employment. From a practical perspective, these findings provide important suggestions for the development of practical measures for the tertiary prevention of poor health during the retirement process.
2015, Article / Letter to editor (International Journal of Older People Nursing, vol. 11, iss. 2, (2015), pp. 121-129)Background. Bathing assistance is a core element of essential care in nursing homes, yet little is known for quality of assisted bathing or its determinants. Aim. To explore differences in completeness of assisted bathing in relation to bathing method and resident characteristics. Methods. Secondary analysis of a cluster randomised trial including 500 nursing home residents designed to compare traditional bathing methods for skin effects and cost-consequences; GlinicalTrials.gov ID [NCT01187732]. Logistic mixed modelling was used to relate resident characteristics and bathing method to bathing completeness. Results. Bathing completeness was highly variable over wards. Apart from a large effect for ward, logistic mixed modelling indicated bathing was more often complete in case of washing without water (using disposable skin cleaning and caring materials; estimate 2.55, SE 0.17, P < 0.0001) and less often complete in residents with dementia (estimate -0.22, SE 0.08, P = 0.0040). Conclusions. Introduction of washing without water is likely to lead to more bathing completeness in nursing homes. However, inequity in care was also identified with a view to highly variable bathing completeness over wards and more incomplete bathing by care staff in residents with dementia. Implications for practice. Monitoring the performance of assisted bathing in nursing homes is indicated for the identification of undesirable variation in essential care and poorly performing teams. The introduction of washing without water could serve the promotion of bathing completeness in nursing homes overall, but will not solve inequity issues for residents.
2012, Article / Letter to editor (MGV: Maandblad Geestelijke Volksgezondheid, vol. 67, iss. 5, (2012))Steeds weer blijkt het voor ggz-professionals lastig om evidence-based behandelingen modelgetrouw uit te voeren. Dit geldt zeker bij meer complexe interventies voor patiënten met meervoudige problematiek, vooral wanneer deze worden uitgevoerd onder ‘gewone’, niet-academische, omstandigheden. Dit artikel beschrijft ervaringen met supervisie bij de implementatie van Interpersoonlijke Sociaal Psychiatrische Begeleiding (ISPB), een begeleidingsmethode voor patiënten met langdurige niet-psychotische problematiek in sociaal-psychiatrische settings. Deze deels op de methode en deels op de professional gerichte supervisievorm levert op enkele terreinen positieve ervaringen op, maar niet op het terrein van de modelgetrouwe uitvoering van ISPB.
2020, Article in monograph or in proceedings (Karwowski, W.; Ahram, T.; Nazir, S. (ed.), Advances in Human Factors in Training, Education, and Learning Sciences. AHFE 2019. Advances in Intelligent Systems and Computing, vol 963)
2019, Article in monograph or in proceedings (Kantola, J.; Nazir, S.; Barath, T. (ed.), Advances in Human Factors, Business Management and Society. AHFE 2018. Advances in Intelligent Systems and Computing, vol 783, pp. 36-45)