Key to reinforcement learning in multi-agent systems is the ability to exploit the fact that agents only directly influence only a small subset of the other agents. Such loose couplings are often modelled using a graphical model: a coordination graph. Finding an (approximately) optimal joint action for a given coordination graph is therefore a central subroutine in cooperative multi-agent reinforcement learning (MARL). Much research in MARL focuses on how to gradually update the parameters of the coordination graph, whilst leaving the solving of the coordination graph up to a known typically exact and generic subroutine. However, exact methods { e.g., Variable Elimination { do not scale well, and generic methods do not exploit the MARL setting of gradually updating a coordination graph and recomputing the joint action to select. In this paper, we examine what happens if we use a heuristic method, i.e., local search, to select joint actions in MARL, and whether we can use outcome of this local search from a previous time-step to speed up and improve local search. We show empirically that by using local search, we can scale up to many agents and complex coordination graphs, and that by reusing joint actions from the previous time-step to initialise local search, we can both improve the quality of the joint actions found and the speed with which these joint actions are found.
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What are ‘local foods’? Are they what should be grown locally according to the predominantly ecologically-focused local food movement? Or are they what our increasingly diverse populations want to grow – or buy – locally as forms of culturally appropriate foods? In this article we argue for the latter, stating that immigrants bring their ‘local’ foods and cuisine with them, known as ‘trans-localism’. Using examples from the multicultural city of Almere, the Netherlands, we contend that urban agriculture can play an important role in making sure that local foods fit the requirements of all local people.
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The realization of human rights standards depends in part on the commitment of local actors. It can be argued that local public service professionals such as social workers can also be regarded as key players. The possible role of social workers becomes imperative if these professionals are working in a policy context that is not congruent with human rights. If existing laws or policies cause or maintain disrespect for human rights, social workers are in a position to observe that this is having an adverse impact on clients. When social workers are regarded as human rights actors, the question arises how they can or should respond to law and policy that impedes them in carrying out their work with respect for human rights. This article adds to existing theories on social workers as human rights actors by examining the practices of social professionals working in such a challenging policy context. The research took place among professionals in social district teams in the city of Utrecht, the Netherlands. Following a series of decentralizations and austerity measures the social care landscape in the Netherlands has changed drastically over the last few years. As a result, social workers may find themselves on the one hand trying to realize the best possible care for their clients while on the other hand dealing with new laws and policy expectations focused on self-reliance and diminished access to specialist care. The article explores how social professionals’ responses to barriers in access to care affect human rights requirements. In doing so, this socio-legal study provides insight into the ways in which everyday social work relates to the realization of human rights at the local level.
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There is an ongoing transition towards renewable energy sources in order to combat climate change. National power grids are suffering due to the rapid introduction of new energy sources and have other disadvantages. Local Energy Systems (LESs) are a beneficial example of an off-grid energy systems that can aid the energy transition. LESs are community driven and require participating and steering members. This can be achieved through empowering end-users to become active participants or steerers. End-users can be empowered to become an active participant through engagement with energy management activities. This does not work for empowering to steer, which begs the question, how to empower end-users or participants to become steerers in Local Energy Systems. Through a literature review this study explores the importance of establishing a group containing steerers with diverse skills, strong leadership, and engagement with the environment and community. Additionally, this study identifies the strategy that empowers end-users to steer. Which is training technological and managemental skills; and training capabilities in establishing relations with local participants and intermediary organisations. To apply these findings more precisely a secondary analysis is conducted on a survey with 599 participants. The original study researched willingness to participate in LESs, however the secondary analysis establishes three important factors to predict willingness to steer. These are energy independence, community trust, and community resistance. Additionally, men with a high level of education are most willing to become steerers per default, thus different demographics generally require more empowerment.
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The goal of a local energy community (LEC) is to create a more sustainable, resilient, and efficient energy system by reducing dependence on centralized power sources and enabling greater participation and control by local communities and individuals. LEC requires transformations in local energy systems, and strongly depends on the preferences and actions of the local actors involved. The necessity for extensive stakeholder involvement adds complexity to the energy transition, posing a significant challenge for all involved parties. The municipality of Leidschendam-Voorburg has committed to the national decision for energy transition. It has taken a strategic approach by proceeding De Heuvel/Amstelwijk as the pioneer in this initiative, leading the way for other neighborhoods to follow. It is crucial to devise strategies that effectively facilitate stakeholder engagement. To this end, a thorough stakeholder analysis is needed. Such an analysis can focus on the identification of key stakeholders, their interests, their influence, and their behavioral characteristics in relation to the energy transition. Additionally, it's crucial to uncover the challenges encountered by these stakeholders and finally develop appropriate strategies to address them hence enhance their engagement. This thesis begins with an introduction to the research background, including a presentation of the case study and a statement of the problem identified in the field, followed by the research questions underpinning the study. A thorough literature review ensues, providing a robust synthesis of existing research relating to stakeholder engagement in LECs, with a view to expediting energy transitions. The literature review not only forms the foundation for the research methods adopted in this study but also promotes in the construction of the conceptual model. Subsequent to the literature review, the research method is detailed. The filed research is conducted in five steps: Step 1 - identification of stakeholders, Step 2 - prioritization of stakeholders, Step 3 - interviewing, Step 4 - data analysis, including stakeholder profiling with mapping and addressing challenges, and finally, Step 5 - proposal of strategies for stakeholder engagement enhancement based on the expected and current levels of stakeholders engagement. This research collects necessary information to understand the profiles of stakeholders in De Heuvel/Amstelwijk, tackle challenges faced by different stakeholders, propose strategies to increase stakeholders engagement. It not only aims to enrich the depth of theoretical knowledge on the subject matter but also strives to aid in the development of a localized energy strategy that is optimally suited for the De Heuvel/Amstelwijk neighborhood as good example for other neighborhoods.
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In this study we analyze a large dataset of Facebook activities of local restaurants in Amsterdam, Houston, London and New York. Doing so gives broad insights in their Facebook usage and the communication patterns between them and their costumers. The dataset is quite rich and the presented statistics are merely the tip of the iceberg.
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In recent years, the fight against terrorism and political violence has focused more on anticipating the threats that they pose. Therefore, early detection of ideas by local professionals has become an important part of the preventive approach in countering radicalization. Frontline workers who operate in the arteries of society are encouraged to identify processes toward violent behavior at an early stage. To date, however, little is known about how these professionals take on this screening task at their own discretion. Research from the Netherlands suggests that subjective assessment appears to exist. In this article, we argue that the absence of a clear norm for preliminary judgments affects prejudice or administrative arbitrariness, which may cause side effects due to unjustified profiling.
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There is growing realisation amongst local communities that the organizations and societies within which they live and work need to become more sustainable in order to secure their social, environmental and economic futures (Coyle 2011, Müller et al. 2011). The underlying motivations vary but are often traceable to an increased need for certainty or security. The search for solutions is in part practically orientated towards resilience to different forces of decline. Whilst sometimes manifested in individuals it is more often evident within local initiatives seeking common ground and related to perceived needs for local independence or increased self-determination (Musall & Kuik 2011, Seyfang & Haxeltine 2012). In our project and in this paper, our focus is on local initiatives as opposed to developments at regional or strategic scales. In the Northern Netherlands such local initiatives are often comprised of village residents or more heterogeneous groups from the wider rural community, with local initiatives co-existent in urban areas and cities. Local initiatives may focus on different sustainability issues (or a combination of them), such as transportation, energy, water, natural environment, food production, solid waste or the local economy (Coyle, 2011). However, many of these local initiatives focus on energy issues and solutions, while they might expand their interests to other issues after a prolonged existence. Therefore, in this paper we refer to these local or communal activities as Local Energy Initiatives (LEI’s) that are at the grassroots of sustainable transitions.
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One of the freedoms enjoyed by European Union (EU) citizens is the freedom of movement for workers within the EU (since 2011). This includes the rights of movement and residence for workers, the right to work in another Member State and be treated on an equal footing with nationals of that Member State. EU Mobile Citizens (EUMCs) are often not treated on an equal footing. In the Netherlands, the struggle to register and house EUMCs has been continuous since the start of the enlargement of the EU with the EU-11 in 2004. For this study student-led research was used to look at registration and housing policies in three countries, Sweden, Spain, and Germany to look for good practices applicable in the Dutch context. Students interviewed a municipal worker and a business representative (employer of EUMCs) in seven selected municipalities. The findings from this exploration highlight the complexity of addressing the needs of EU Mobile Citizens within local governance structures. Across the case studies, three critical themes emerged that shaped the dynamics of registration and housing for EUMCs: the capacity of local governments, the roles of employers, and the influence of national-level policies.
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This document summarizes the main findings of the ERASMUS+ Strategic Partnership ‘Community Learning for Local Change (CLLC)’. The CLLC project has been running from September 2018 to August 2021. The project was a cooperation of four universities, three NGOs and various local community partners. Our consortium presents new approach to promote creativity, entrepreneurial thinking and skills for designing innovation in close cooperation with the communities in which our universities are embedded.
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