Environmental concerns and urbanization pressures are driving demand for more efficient reverse logistics in city environments, where space constraints and dense populations create unique challenges. Polyurethanes (PU), used widely in insulation, electronics, and automotive industries, are integral to circular supply chain discussions due to their low recycling rates. This study emphasizes the challenges of urban reverse logistics for the disposal and collection of refrigerators in countries with different waste management systems. In the paper qualitative and quantitative methods have been applied. Based on the research carried out, it was shown how complex the reverse logistics process is in the city concerning waste such as fridges. It is influenced by, among other things, regulations at EU and national level, cooperation between stakeholders, consumer awareness and education, and real-time access to information on waste.
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Municipalities play an important role in tackling city logistics related matters, having many instruments at hand. However, it is not self-evident that all municipalities use these instruments to their full potential. A method to measure city logistics performance of municipalities can help in creating awareness and guidance, to ultimately lead to a more sustainable environment for inhabitants and businesses. Subsequently, this research is focused on a maturity model as a tool to assess the maturity level of a municipality for its performance related city logistics process management. Various criteria for measuring city logistics performance are studied and based on that the model is populated through three focus fields (Technical, Social and Corporate, and Policy), branching out into six areas of development: Information and communication technology, urban logistics planning, Stakeholder communication, Public Private Partnerships, Subsidisation and incentivisation, and Regulations. The CL3M model was tested for three municipalities, namely, municipality of Utrecht, Den Bosch and Groningen. Through these maturity assessments it became evident the model required specificity complementary to the existing assessment interview, and thus a SWOT analysis should be added as a conclusion during the maturity assessment.
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Several studies show that logistics facilities have spread spatially from relatively concentrated clusters in the 1970s to geographically more decentralized patterns away from urban areas. The literature indicates that logistics costs are one of the major influences on changes in distribution structures, or locations and usage of logistics facilities. Quantitative modelling studies that aim to describe or predict these phenomena in relation to logistics costs are lacking, however. This is relevant to design more effective policies concerning spatial development, transport and infrastructure investments as well as for understanding environmental consequences of freight transport. The objective of this paper is to gain an understanding of the responsiveness of spatial logistics patterns to changes in these costs, using a quantitative model that links production and consumption points via distribution centers. The model is estimated to reproduce observed use of logistics facilities as well as related transport flows, for the case of the Netherlands. We apply the model to estimate the impacts of a number of scenarios on the spatial spreading of regional distribution activity, interregional vehicle movements and commodity flows. We estimate new cost elasticities, of the demand for trade and transport together, as well as specifically for the demand for the distribution facility services. The relatively low cost elasticity of transport services and high cost elasticity for the distribution services provide new insights for policy makers, relevant to understand the possible impacts of their policies on land use and freight flows.
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Development of novel testing strategies to detect adverse human health effects is of interest to replace in vivo-based drug and chemical safety testing. The aim of the present study was to investigate whether physiologically based kinetic (PBK) modeling-facilitated conversion of in vitro toxicity data is an adequate approach to predict in vivo cardiotoxicity in humans. To enable evaluation of predictions made, methadone was selected as the model compound, being a compound for which data on both kinetics and cardiotoxicity in humans are available. A PBK model for methadone in humans was developed and evaluated against available kinetic data presenting an adequate match. Use of the developed PBK model to convert concentration–response curves for the effect of methadone on human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CM) in the so-called multi electrode array (MEA) assay resulted in predictions for in vivo dose–response curves for methadone-induced cardiotoxicity that matched the available in vivo data. The results also revealed differences in protein plasma binding of methadone to be a potential factor underlying variation between individuals with respect to sensitivity towards the cardiotoxic effects of methadone. The present study provides a proof-of-principle of using PBK modeling-based reverse dosimetry of in vitro data for the prediction of cardiotoxicity in humans, providing a novel testing strategy in cardiac safety studies.
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From a circular standpoint it is interesting to reuse as much as possible construction and demolition waste (CDW) into new building projects. In most cases CDW will not be directly reusable and will need to be processed and stored first. In order to turn this into a successful business case CDW will need to be reused on a large scale. In this paper we present the concept of a centralized and coordinated location in the City of Utrecht where construction and demolition waste is collected, sorted, worked, stored for reuse, or shipped elsewhere for further processing in renewed materials. This has expected advantages for the amount of material reuse, financial advantages for firms and clients, generating employability in the logistics and processing of materials, optimizing the transport and distribution of materials through the city, and thus the reduction of emissions and congestion. In the paper we explore the local facility of a Circular Hub, and the potential effects on circular reuse, and other effects within the City of Utrecht.
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The ‘Grand Challenges’ of our times, like climate change, resource depletion, global inequity, and the destruction of wildlife and biodiversity can only be addressed by innovating cities. Despite the options of tele-working, tele-trading and tele-amusing, that allow people to participate in ever more activities, wherever they are, people are resettling in cities at an unprecedented speed. The forecasted ‘rurification’ of society did not occur. Technological development has drained rural society from its main source of income, agriculture, as only a marginal fraction of the labour force is employed in agriculture in the rich parts of the world. Moreover, technological innovation created new jobs in the IT and service sectors in cities. Cities are potentially far more resource efficient than rural areas. In a city transport distances are shorter, infrastructures can be applied to provide for essential services in a more efficient way and symbiosis might be developed between various infrastructures. However, in practice, urban infrastructures are not more efficient than rural infrastructures. This paper explores the reasons why. It digs into the reasons why the symbiotic options that are available in cities are not (sufficiently) utilised. The main reason for this is not of an economic nature: Infrastructure organisations are run by experts who are part of a strong paradigmatic community. Dependence on other organisations is regarded as limiting the infrastructure organisation’s freedom of action to achieve its own goals. Expert cultures are transferred in education, professional associations, and institutional arrangements. By 3 concrete examples of urban systems, the paper will analyse how various paradigms of experts co-evolved with evolving systems. The paper reflects on recent studies that identified professional education as the initiation into such expert paradigms. It will thereby relate lack of urban innovation to the monodisciplinary education of experts and the strong institutionalised character of expertise. https://doi.org/10.1007/978-3-319-63007-6_43 LinkedIn: https://www.linkedin.com/in/karelmulder/
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Our planet’s ecology and society are on a collision course, which manifests due to a contradiction in the assumptions of unlimited material growth fueling the linear economic paradigm. Our closed planetary ecosystem imposes confined amounts of space and a finite extent of resources upon its inhabitants. However, practically all the economic perspectives have been defiantly neglecting these realities, as resources are extracted, used and disposed of reluctantly (Ellen MacArthur Foundation 2015). The circular economy attempts to reconcile the extraction, production and usage of goods and resources with the limited availability of those resources and nature’s regenerative capabilities This perspective entails a shift throughout the supply chain, from material science (e g non-toxic, regenerative biomaterials) to novel logistical systems (e g low-carbon reverse logistics). Because of this, the circular economy is often celebrated for its potential environmental benefits and its usefulness as a blueprint for sustainable development (Ellen MacArthur Foundation 2017). Unfortunately, the promise of the circular economy aiming at enhanced sustainability through restorative intent and design (McDonough & Braungart 2010), is often inhibited by institutional barriers posed by the current linear economy of take, make, use and waste (Ghisellini et al. 2016). Underlying those barriers our cultural paradigm celebrates consumerism, exponential growth and financial benefit instead of human values such as diversity, care and trust. Based on a mapping exercise of the circular economy discourse in the Netherlands and an overview of international (academic) literature (Van den Berg 2020) supplemented with collaborative co-creation sessions, visiting events, conferences, giving talks and classes, we have defined a gap leading to the focus of the Professorship. First, we highlight the importance of a process approach in studying the transition from a linear to a circular economy, which is why we use the verb ‘entrepreneuring’ as it indicates the movement we collectively need to make. The majority of work in the field is based on start-ups and only captures snapshots while longitudinal and transition perspectives - especially of larger companies - are missing (Merli et al. 2019; Geissdoerfer et al. 2018; Bocken et al. 2014). We specifically adopt an entrepreneurship-as-practice lens (Thompson, Verduijn & Gartner 2020), which allows us to trace the doings – as opposed to only the sayings - of organizations involved in circular innovation. Such an approach also enables us to study cross-sector and interfirm collaboration, which is crucial to achieve ecosystem circularity (Raworth 2019). As materials flow between actors in a system, traditional views of ‘a value chain’ slowly make way for an ecosystem or value web perspective on ‘organizing business’. We summarize this first theme as ‘entrepreneurship as social change’ broadening dominant views of what economic activity is and who the main actors are supposed to be (Barinaga 2013; Calás, Smircich & Bourne 2009; Steyaert & Hjorth 2008; Nicholls 2008). Second, within the Circular Business Professorship value is a big word in two ways. First of all, we believe that a transition to a circular economy is not just a transition of materials, nor technologies - it is most of all a transition of values We are interested in how people can explore their own agency in transitioning to a circular economy thereby aligning their personal values with the values of the organization and the larger system they are a part of Second, while circularity is a broad concept that can be approached through different lenses, the way in which things are valued and how value is created and extracted lies at the heart of the transition (Mazzucato 2018). If we don’t understand value as collectively crafted it will be very hard to change things, which is why we specifically focus on multiplicity and co-creation in the process of reclaiming value, originating from an ethics of care Third, sustainability efforts are often concerned with optimization of the current – linear – system by means of ecoefficient practices that are a bit ‘less bad’; using ’less resources’, causing ‘less pollution’ and ‘having less negative impact’. In contrast, eco-effective practices are inherently good, departing from the notion of abundance: circular thinking celebrates the abundance of nature’s regenerative capacities as well as the abundance of our imagination to envision new realities (Ellen MacArthur Foundation 2015). Instead of exploiting natural resources, we should look closely in order to learn how we can build resilient self-sustaining ecosystems like the ones we find in nature. We are in need of rediscovering our profound connection with and appreciation of nature, which requires us to move beyond the cognitive and employ an aesthetic perspective of sustainability This perspective informs our approach to innovating education: aesthetics can support deep sustainability learning (Ivanaj, Poldner & Shrivastava 2014) and contribute to facilitating the circular change makers of the future. The current linear economy has driven our planet’s ecology and society towards a collision course and it is really now or never: if we don’t alter the course towards a circular economy today, then when? When will it become urgent enough for us to take action? Which disaster is needed for us to wake up? We desperately need substitutes for the current neo-liberal paradigm, which underlies our linear society and prevents us from becoming an economy of well-being In Entrepreneuring a regenerative society I propose three research themes – ‘entrepreneurship as social change’, ‘reclaiming value’ and ‘the aesthetics of sustainability’ – as alternative ways of embracing, studying and co-creating such a novel reality. LinkedIn: https://www.linkedin.com/in/kim-poldner-a003473/
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Sustainable consumption is interlinked with sustainable production. This chapter will introduce the closed-loop production, the circular economy, the steady state economy, and Cradle to Cradle (C2C) models of production. It will reflect on the key blockages to a meaningful sustainable production and how these could be overcome, particularly in the context of business education. The case study of the course for bachelor’s students within International Business Management Studies (IBMS) program at three Universities of Applied Science (vocational schools), and at Leiden University College in The Netherlands will be discussed. Student teams from these schools were given the assignment to make a business plan for a selected sponsor company in order to advise them how to make a transition from a linear to circular economy model. These case studies will illustrate the opportunities as well as potential pitfalls of the closed loop production models. The results of case studies’ analysis show that there was a mismatch between expectations of the sponsor companies and those of students on the one hand and a mismatch between theory and practice on the other hand. The former mismatch is explained by the fact that the sponsor companies have experienced a number of practical constraints when confronted with the need for the radical overhaul of established practices within the entire supply chain and students have rarely considered the financial viability of the "ideal scenarios" of linear-circular transitions. The latter mismatch applies to what students had learned about macro-economic theory and the application through micro-economic scenarios in small companies. https://www.springer.com/gp/book/9783319656076 LinkedIn: https://www.linkedin.com/in/helenkopnina/
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