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van Dam, S.S. (author), Bakker, C.A. (author), Hazenoot, Thomas (author), Mihelič, Aleš (author)This paper presents the result of a co-creation and context mapping study amongst seventeen washing machines users. The users had widely varying experiences with products offered through alternative ownership models, including three who were active users of a washing machine with pay-per-use or monthly subscription model. Through the co-creation...conference paper 2019
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Sumter, Deborah (author), de Koning, J.I.J.C. (author), Bakker, C.A. (author), Balkenende, R. (author)Limited research has been done on design competencies for a circular economy in practice. Yet, an overview of design competencies for a circular economy would be useful to understand which topics should be emphasized in both education and practice. This paper focuses on deriving circular economy competencies for product designers working in...conference paper 2019
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van der Loop, Han (author), Bakker, Peter (author), Savelberg, Fons (author), Kouwenhoven, M.L.A. (author), Helder, Eveline (author)Objective<br/>Until 2016, the KiM Netherlands Institute for Transport Policy Research annually explained the development of train passenger kilometres over the preceding ten years by using the national development of its drivers (such as population growth and train kilometers), as well as the elasticities of demand for those drivers. Since some...conference paper 2018
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Sauerwein, M. (author), Bakker, C.A. (author), Balkenende, R. (author)This paper explores the use of annotated portfolios as a method to support the qualitative analysis of interview data about design projects. Annotated portfolios have so far been used to support artefacts with text in order to discuss them in the context of ‘research through design’ In this paper, we interpret the five-step method of McCracken...conference paper 2018
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Boorsma, N.E. (author), Peck, David (author), Fischer, Susanne (author), Bakker, C.A. (author), Balkenende, R. (author)The transition towards a circular economy proposes to deliver sustainable, lower carbon opportunities to society, governments and companies. This paper focuses on finding barriers encountered during remanufacturing activities and interpreting the barriers by using a framework for dynamic capabilities. Dynamic capabilities enable companies to...conference paper 2018
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Bakker, Richard (author), Visingardi, Antonio (author), van der Wall, Berend G. (author), Voutsinas, Spyros (author), Basset, Pierre-Marie (author), Campagnolo, Filippo (author), Pavel, M.D. (author), Barakos, George (author), White, Mark (author)The effects of a wind turbine wake on General Aviation and the behaviour of helicopters in the tip vortex of large fixed-wing aircraft has been topic of research in the past years, but less is known about the interactions of helicopters operating in a wind turbine wake. A dedicated GARTEUR Action Group, HC-AG23, consisting of European...conference paper 2018
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Mourillon, Nadevah K.N. (author), de Gijt, J.G. (author), Bakker, K.J. (author), Brassinga, Henk (author), Broos, E.J. (author)The stability of any structure is an important aspect in civil engineering. This aspect is the subject of the researched quay wall at the Amazonehaven, port of Rotterdam. The quay wall with a relieving platform structure had in various section, over the entire 900m length of the quay, large deformations at the toe of the combined wall. The...conference paper 2017
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Weeda, Tomas (author), de Gijt, J.G. (author), Bakker, K.J. (author), Braam, C.R. (author), Broos, Eric (author), Jonkman, Sebastiaan N. (author)As a result of the persistent increase of container vessel dimensions, future problems regarding navigation draught in the presence of tunnels are becoming more likely to occur. Hence, possible solutions to this problem have been investigated for the Beneluxtunnel. Several design options have been elaborated to determine the technical and...conference paper 2017
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Bakker, M.C.M. (author)Automated optic inspection of concrete aggregates for pollutants (e.g. wood, plastics, gypsum and brick) is required to establish the suitability for reuse in new concrete products. Inspection is more efficient when directly sampling the materials on the conveyor belt instead of feeding them in a sampled stream to the sensor system. However,...conference paper 2017
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Bakker, M.C.M. (author)Automated optic inspection of concrete aggregates for pollutants (e.g. wood, plastics, gypsum and brick) is required to establish the suitability for reuse in new concrete products. Inspection is more efficient when directly sampling the materials on the conveyor belt instead of feeding them in a sampled stream to the sensor system. However,...conference paper 2017
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van Dam, S.S. (author), Bakker, C.A. (author), de Pauw, I.C. (author), van der Grinten, B. (author)The Circular Pathfinder tool, which provides guidance to companies looking for appropriate circular design strategies, was developed based on OEM (original equipment manufacturer) case studies. Ease of use was one of the main requirements during development of the tool, resulting in a software-based guide that asks a maximum of ten product...conference paper 2017
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Ezzahiri, Sidi Mohamed (author), Nasif, Badia S. (author), Krieg, Jan (author), Bakker, Anco (author), Infante Ferreira, C.A. (author)The search for renewable energy sources is a wide area in which significant progress is still expected. This paper focuses on an energy system that uses Fresnel lenses to concentrate sunlight on a tubing system to heat up the working fluid. Fresnel lenses are lighter, thinner and cheaper to build than ordinary lenses. The model is designed to be...conference paper 2017
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Peck, David (author), Bakker, C.A. (author), Kandachar, P.V. (author), de Rijk, T. (author)Materials are important in economies, business, innovation activity and products, and they have quickly become essential to maintain and improve our quality of life. The world faces problems concerning material supply, but these concerns are not translated into product design activity, even though history shows that product design policy can...conference paper 2017
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Sumter, Deborah (author), Bakker, C.A. (author), Balkenende, R. (author)This paper examines the role of product designers in the transition towards the circular economy. Both scientific and grey literature show remarkable optimism when it comes to role strategic and coordinating role designers could play in this transition process. However, there has been little examination of the actual role and influence designers...conference paper 2017
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Sauerwein, M. (author), Bakker, C.A. (author), Balkenende, R. (author)Circular product design is a relatively new approach to design suitable strategies to realize circular products. Additive manufacturing (AM) is seen as a promising enabling production process. It has digital and additive characteristics, which makes AM different from conventional production techniques. However, it is yet unclear how this...conference paper 2017
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Blom, H.A.P. (author), Bakker, GJ (author)Effective collaboration between planning controller, tactical controller and pilots in handling various uncertainties and hazards is the result of decades of evolutionary development. The forthcoming paradigm shift to Trajectory Based Operations (TBO) requires a similarly effective collaboration between the TBO layer and a tactical layer....conference paper 2017
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Bakker, M.C.M. (author), Xia, H. (author)Optical inspection of a thick layer of granules for foreign particles does not directly reveal their true number and the more so if the layer is not homogenous. This raises questions such as “how do I know if the layer is homogenous?” and “what is the relation between the observable particles and the true number?” In this work a theory is...conference paper 2016
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- Blom, H.A.P. (author), Bakker, GJ (author) conference paper 2016
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Stoop, A.H. (author), Bakker, T.W. (author), Kramer, H.J.M. (author)In several studies the beneficial influence of pre-treatment of waste activated sludge with cavitation on the biogas production was demonstrated. It is however, still not fully certain whether this effect should be mainly contributed to an increase in conversion rate of organics into biogas by anaerobic bacteria, and how much cavitation...conference paper 2015
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Van den Berg, M.R. (author), Bakker, C.A. (author)The paper provides a circular economy framework from a product design perspective with tools to aid product designers in applying circular product design in practice. Design research for circular economy has so far mainly been limited to referring to existing fields of research such as design for disassembly, remanufacturing and recycling. The...conference paper 2015