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Who are the value transformers, value co-operators and value gatekeepers? New routes to value preservation in a sufficiency-based circular economy

Haase, Louise Møller (author), Mugge, R. (author), Mosgaard, Mette Alberg (author), Bocken, Nancy (author), Jaeger-Erben, Melanie (author), Pizzol, Massimo (author), Jørgensen, Michael Søgaard (author)

Value preservation is key for the transition from a linear economy to a sufficiency-based circular economy. However, to keep the value of products and materials at the highest level possible over time, different actors such as businesses, designers, consumers, and policymakers must know when value is reduced during a product's lifetime, and how...

journal article 2024

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Analysis of the impact of traffic density on training of reinforcement learning based conflict resolution methods for drones

Groot, D.J. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)

Conventional Air Traffic Control is still predominantly being done by human Air Traffic Controllers, however, as the traffic density increases, the workload of the controllers increases as well. Especially for the area of unmanned aviation, driven by the rise in drones, having human controllers might become unfeasible. One of the methods that...

journal article 2024

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Can grassroots movements in water conflicts drive socio-technical transitions in water management systems?

Godinez Madrigal, J. (author), Van Cauwenbergh, Nora (author), Ochoa-Garcia, Heliodoro (author), van der Zaag, P. (author)

Water conflicts open windows of opportunity for grassroots movements to transform water systems. However, academic fields studying social movements in socio-environmental conflicts are not well equipped to deal with complexity, non-linear dynamics, and emergent properties. Therefore, these fields rarely engage with long-term complex social...

journal article 2024

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Distributed Actor-Critic Algorithms for Multiagent Reinforcement Learning Over Directed Graphs

Dai, Pengcheng (author), Yu, Wenwu (author), Wang, He (author), Baldi, S. (author)

Actor-critic (AC) cooperative multiagent reinforcement learning (MARL) over directed graphs is studied in this article. The goal of the agents in MARL is to maximize the globally averaged return in a distributed way, i.e., each agent can only exchange information with its neighboring agents. AC methods proposed in the literature require the...

journal article 2023

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Fleet planning under demand and fuel price uncertainty using actor–critic reinforcement learning

Geursen, Isaak L. (author), Santos, Bruno F. (author), Yorke-Smith, N. (author)

Current state-of-the-art airline planning models face computational limitations, restricting the operational applicability to problems of representative sizes. This is particularly the case when considering the uncertainty necessarily associated with the long-term plan of an aircraft fleet. Considering the growing interest in the application of...

journal article 2023

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Agency and Structure in Urban and Regional Planning: An Illustrative Overview and Future Research Agenda

Purkarthofer, E. (author), Stead, D. (author)

There is extensive literature on the agency of actors in urban and regional planning which draws on a wide range of theoretical lenses and concepts. One of the recurring themes is the relationship between agency and structure—the mutual interdependence between individual actions and collective institutions, rules, and norms. This article...

journal article 2023

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Dataset on the literature on public participation and consensus building: Bibliography and meta-analysis of selected studies

Foroughi, M. (author), de Andrade, Bruno (author), Pereira Roders, A. (author)

The data presented in this Data in Brief article offers an insight into the scientific literature on conceptual and empirical approaches to public participation and consensus-building. It consists of articles retrieved from the Scopus search engine which feature “public participation”, “consensus”, and “value and attribute” in the title,...

journal article 2023

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Scalable and Decentralized Algorithms for Anomaly Detection via Learning-Based Controlled Sensing

Joseph, G. (author), Zhong, Chen (author), Gursoy, M. Cenk (author), Velipasalar, Senem (author), Varshney, Pramod (author)

We address the problem of sequentially selecting and observing processes from a given set to find the anomalies among them. The decision-maker observes a subset of the processes at any given time instant and obtains a noisy binary indicator of whether or not the corresponding process is anomalous. We develop an anomaly detection algorithm that...

journal article 2023

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On the (Non)Institutional Disclosure of Urban Commons: Evidence, Practices and Challenges From the Netherlands and Belgium

Calzati, S. (author), Santos, Francisco (author), Casarola, Giulia (author)

The 2008 economic crisis has opened the door to new strategies for managing urban resources. In fact, the interest in urban commons (UC) has (re)surfaced both within and outside academia. While literature accounting for existing experiences is growing; UC as a practice begs for further systematization concerning the needed negotiation between...

journal article 2022

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The role of industrial actors in the circular economy for critical raw materials: a framework with case studies across a range of industries

Cimprich, Alexander (author), Schrijvers, Dieuwertje (author), Ku, Anthony Y. (author), Hagelüken, Christian (author), Christmann, Patrice (author), Eggert, Roderick (author), Hirohata, Atsufumi (author), Peck, David (author), Hool, Alessandra (author)

In this article, we explore concrete examples of circularity strategies for critical raw materials (CRMs) in commercial settings. We propose a company-level framework for systematically evaluating circularity strategies (e.g., material recycling, product reuse, and product or component lifetime extension) in specific applications of CRMs from...

journal article 2022

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Actris 2.0: Asynchronous session-type based reasoning in separation logic

Hinrichsen, Jonas Kastberg (author), Bengtson, Jesper (author), Krebbers, R.J. (author)

Message passing is a useful abstraction for implementing concurrent programs. For real-world systems, however, it is often combined with other programming and concurrency paradigms, such as higher-order functions, mutable state, shared-memory concurrency, and locks. We present Actris: a logic for proving functional correctness of programs...

journal article 2022

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Distributed Conflict Resolution at High Traffic Densities with Reinforcement Learning

Ribeiro, M.J. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author)

Future operations involving drones are expected to result in traffic densities that are orders of magnitude higher than any observed in manned aviation. Current geometric conflict resolution (CR) methods have proven to be very efficient at relatively moderate densities. However, at higher densities, performance is hindered by the...

journal article 2022

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A methodology to determine suitable locations for regional shared mobility hubs

Blad, Koen (author), Correia, Gonçalo (author), van Nes, R. (author), Annema, J.A. (author)

As a solution to the high greenhouse gas emissions and declining quality of life caused by private vehicles, the shared mobility hub is introduced. The shared mobility hub is a place where multiple modalities come together, including public transport and shared private mobility. As the shared mobility hub is a relatively new solution, limited...

journal article 2022

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Implementing circularity in the construction process: a case study examining the reorganization of multi-actor environment and the decision-making process

Gerding, D.P. (author), Wamelink, J.W.F. (author), Leclercq, E.M. (author)

Circularity aims to make waste obsolete by both closing and narrowing resource loops and by extending the lifespan of materials and products. This fundamentally different approach to construction practices necessitates a completely different method of organising the construction process. The rounds of decision-making undertaken by different...

journal article 2021

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Actris: Session-type based reasoning in separation logic

Hinrichsen, J.K. (author), Bengtson, Jesper (author), Krebbers, R.J. (author)

Message passing is a useful abstraction to implement concurrent programs. For real-world systems, however, it is often combined with other programming and concurrency paradigms, such as higher-order functions, mutable state, shared-memory concurrency, and locks. We present Actris: a logic for proving functional correctness of programs that...

journal article 2020

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A multi-actor perspective on multi-objective regional energy system planning

Wang, N. (author), Heijnen, P.W. (author), Imhof, Pieter (author)

Renewable energy investment is a complex process where multiple actors are often involved with their own, sometimes conflicting, interests. Here we propose a multi-actor multi-objective regional energy system planning approach to help actors gain mutual understanding regarding each other’s optimal investment wishes, in order to advance the...

journal article 2020

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Beyond instrumentalism: Broadening the understanding of social innovation in socio-technical energy systems

Wittmayer, Julia M. (author), de Geus, Tessa (author), Pel, Bonno (author), Avelino, Flor (author), Hielscher, Sabine (author), Hoppe, T. (author), Mühlemeier, Susan (author), Stasik, Agata (author), de Vries, G. (author)

Social innovation is an important dimension of current transformations in energy systems. It can refer to alternative business models, novel policy instruments, financing schemes, participatory governance approaches to energy questions, or new discourses. Its significance for energy systems is often considered in narrow instrumentalist terms,...

journal article 2020

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Coastal engineers embrace nature: Characterizing the metamorphosis in hydraulic engineering in terms of four continua

Slinger, J (author), Vreugdenhil, H.S.I. (author)

Hydraulic engineering infrastructures, such as reservoirs, dikes, breakwaters, and inlet closures, have significantly impacted ecosystem functioning over the last two centuries. Currently, nature-based solutions are receiving increasing attention in hydraulic engineering projects and research programs. However, there is a lack of reflection...

journal article 2020

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The Y factor for Climate Change abatement – A method to rank options beyond abatement costs

Chappin, E.J.L. (author), Soana, M. (author), Arensman, C. E.C. (author), Swart, F. (author)

The tools available to translate climate targets into abatement actions are mainly based on costs and technical feasibility. Options for greenhouse gas abatement span all sectors, all countries, and involve a huge variety of technologies. The reasons for abatement to be realized, or not, are diverse and complex. In particular, the political...

journal article 2020

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Reinforcement learning based compensation methods for robot manipulators

Pane, Yudha P. (author), Nageshrao, Subramanya P. (author), Kober, J. (author), Babuska, R. (author)

Smart robotics will be a core feature while migrating from Industry 3.0 (i.e., mass manufacturing) to Industry 4.0 (i.e., customized or social manufacturing). A key characteristic of a smart system is its ability to learn. For smart manufacturing, this means incorporating learning capabilities into the current fixed, repetitive, task-oriented...

journal article 2019