In many regions, governments are motivating increased bicycle ridership by designing new and improving existing bicycle infrastructure. Cycle highways are an effective and cost-efficient type of bicycle-specific infrastructure that are designed to provide a functional connection between places where people work, go to school and live. One important element of developing high quality cycle highways is the development of an effective wayfinding system which allows current, potential, and new users to clearly identify and navigate a bicycle network. The wayfinding design standards used for conventional bicycle infrastructure may not be compatible for cycle highways, which encourage cyclists to travel at relatively higher speeds. This may warrant introducing specific wayfinding signage compatible for this new type of bicycle infrastructure. This study uses qualitative analysis including field observations, ride-along videos, and semi-structured interviews, to assess electrically assisted pedal bicycle (e-bike) users' opinions and experiences with wayfinding signage along a pilot cycle highway route located between Tilburg and Waalwijk in the Netherlands. In the summer of 2018, base-line observations and interviews were administered with twelve e-bike users who were unfamiliar with the route to assess their experiences with conventional signage for cyclists before changes were made to the wayfinding system. Follow-up observations were held in the fall, after the installation of two new pilot wayfinding systems that were specifically designed to accommodate cycle highway users. Initial findings suggest that the changes made to the location, size and clarity of the signage improve cyclists' overall experiences, and that cyclists' perceptions of the built environment are important. Specifically, it became easier for users to navigate the route, their overall travel related stress decreased, and several participants perceived shorter travel times. Policy makers and transportation planners are likely to be interested in the results of this study as they reveal how specific improvements to wayfinding along cycle highways not only help improve navigation, but also positively influence cyclists' overall comfort and stress.
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This booklet holds a collection of drawings, maps, schemes, collages, artistic impressions etc. which were made by students during an intense design moment in the project (re)CYCLE Limburg, which took place in December 2016. Students of Built Environment, Facility Management, Social Work and Health & Care cooperated in making designs and developing strategies for urban renewal in Kerkrade West (Province of Limburg, the Netherlands). The study focused on the importance of qualitative and shared public spaces. The local community (inhabitants, shopkeepers, entrepreneurs, municipality, housing corporation) was actively engaged by sharing knowledge and information, ideas and opinions. These reflections are part of the Limburg Action Lab (part of the Smart Urban Redesign Research Centre). It engages in research by design on innovative and tactical interventions in public space, that might enhance the identity, sustainability and socio-spatial structure of neighbourhoods.
We present an economic impacts model based on direct expenditures for European cycle routes, originally designed in 2009 as part of a study commissioned by the European Parliament. At its request, the study was updated in 2012, including a refined version of our model which takes some limitations of the former model into account. Our main findings are that cycle tourists’ daily spending is comparable to that of other tourists, and that cycle tourism can contribute significantly in particular to rural economies that have not previously enjoyed mainstream tourism development. (European) cycle tourism thus proves to be useful as an (additional) tool for regional rural development. We arrived at a total estimated direct expenditures in Europe of almost €44 billion (€35 billion from day trips and €8.94 billion from overnight trips). We applied the model to the routes of EuroVelo, the European cycle route network which is currently being developed, showing their considerable economic potential of over €7 billion in direct expenditures. Furthermore, cycle tourism has a far lower negative impact on the environment (in terms of carbon dioxide emissions) than other forms of tourism. Cycle tourism is therefore a good example of a low carbon tourism product which could be developed as a major slow travel opportunity across (rural) Europe.
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Paper sludge contains papermaking mineral additives and fibers, which could be reused or recycled, thus enhancing the circularity. One of the promising technologies is the fast pyrolysis of paper sludge, which is capable of recovering > 99 wt.% of the fine minerals in the paper sludge and also affording a bio-liquid. The fine minerals (e.g., ‘circular’ CaCO3) can be reused as filler in consumer products thereby reducing the required primary resources. However, the bio-liquid has a lower quality compared to fossil fuels, and only a limited application, e.g., for heat generation, has been applied. This could be significantly improved by catalytic upgrading of the fast pyrolysis vapor, known as an ex-situ catalytic pyrolysis approach. We have recently found that a high-quality bio-oil (mainly ‘bio-based’ paraffins and low-molecular-weight aromatics, carbon yield of 21%, and HHV of 41.1 MJ kg-1) was produced (Chem. Eng. J., 420 (2021), 129714). Nevertheless, catalyst deactivation occurred after a few hours’ of reaction. As such, catalyst stability and regenerability are of research interest and also of high relevance for industrial implementation. This project aims to study the potential of the add-on catalytic upgrading step to the industrial fast pyrolysis of paper sludge process. One important performance metric for sustainable catalysis in the industry is the level of catalyst consumption (kgcat tprod-1) for catalytic pyrolysis of paper sludge. Another important research topic is to establish the correlation between yield and selectivity of the bio-chemicals and the catalyst characteristics. For this, different types of catalysts (e.g., FCC-type E-Cat) will be tested and several reaction-regeneration cycles will be performed. These studies will determine under which conditions catalytic fast pyrolysis of paper sludge is technically and economically viable.
A transition to a circular economy is needed to revolutionize the construction sector and make it more sustainable for present and future generations. While the construction industry and the production of construction materials contribute to environmental pollution, they also offer great potential for addressing many environmental problems. Sheet materials are engineered wood boards that are produced from recycled or solid wood where an adhesive is used to bind the particles together, predominantly used in: Furniture manufacturing, Flooring application, Roofing, Wall sheathing. The most common binder for boards is urea-formaldehyde. Other binders may be used depending on the grade of board and its intended end-use. For example, melamine urea-formaldehyde, phenolic resins and polymeric diphenylmethane diisocyanate (PMDI) are generally used in boards that require improved moisture resistance. Formaldehyde is classified in the in the European Union as a carcinogen and it carries the hazard statement 'suspected of causing cancer'. In this project mycelium composites are developed as a formaldehyde-free, fully natural and biodegradable material with high potential to substitute these hazardous materials. The heat-press process, the feasibility of which was evaluated in a previous Kiem HBO project, is to be further developed towards a process where mycelium sheets with different thicknesses will be obtained. This is considered as a fundamental step to increase the material approachability to the market. Different Material manufacturing techniques are also considered to enable the increase of sample thicknesses and volume. Moreover, a business study will be incorporated to allow further understanding of the material market potential. The consortium composition of V8 Architects, QbiQ, Fairm, Verbruggen Paddestoelen BV, and CoEBBE merges different expertise and guarantees the consideration of the whole material production chain. The research will contribute to bring mycelium composites a step closer to the market, giving them visibility and increasing the possibility to a commercial breakthrough.
De toepassing van composiet materialen in de energie, transport en commodity sector heeft bijgedragen tot de reductie van CO2 emissies door minder vervoerd gewicht (vooral belangrijk voor de luchtvaart en wegtransport), lagere energieconsumptie voor de vervaardigingscyclus, en duurzamere producten (minimaal onderhoud). Naast reeds bestaande kleinere markten in verscheidene sectoren, zijn het met name de succesvolle toepassingen in de luchtvaartindustrie die intussen de weg plaveien voor grootschalige seriematige en reproduceerbare toepassingen in de automobiel, energieopslag, sportartikelen en commodities industrie. De beperkte recycleerbaarheid van Thermoset composieten is echter een groot probleem. Deze kunnen immers na uitharding niet opnieuw worden vormgegeven. Dit kan worden opgelost door de toepassing van thermoplastische composieten, gebaseerd op her-smeltbare en herbruikbare polymeercombinaties. Deze nieuwe klasse van composiet is dan ook veelbelovend en vormt een zeer actuele taak van onderzoek. Gangbare productietechnieken zoals persen en consolideren kennen echter grote afvalvolumes door vorm-uitsnijding en uitval. Modernere technieken zoals continuvezel 3-D printen en tape laying kunnen dit probleem zeer effectief oplossen. Daarnaast kunnen de daarmee geproduceerde 3-D legsels als verstijvers of verstevigingen fungeren voor de klassieke, geperste thermoplastische schalen in overmoulding of co-consolidatie stappen. Deze combinatie zal bovendien de weg openen naar de integrale vervaardiging van grote verstijfde delen, verdere mogelijkheden tot ontwerpoptimalisatie en méér productiemogelijkheden voor het MKB. Uitdagingen zijn hierbij: beter proces en materiaalgedag begrip, uitgebreide processimulaties, gespecialiseerde hardware en regelsystemen voor snellere, betere en groenere productie, efficiënte integratie van robotica en perifere systemen, toetsing aan de praktijk, disseminatie en waarborging van de gegenereerde kennis en bewaking van milieu-gerelateerde prestatie indicatoren. Met een uitgebreid consortium van 3 kennisinstellingen en 7 MKB bedrijven, beoogt dit project hier antwoord op te geven.
