Zoekresultaten

Validation methodology for addressing multimodal networks of the future

The following paper presents a methodology we developed for addressing the case of a multi-modal network to be implemented in the future. The methodology is based on a simulation approach and presents some characteristics that make a challenge to be verified and validated. To overcome this limitation, we proposed a novel methodology that implies interaction with subjectmatter experts, revision of current data, collection and assessment of future performance and educated assumptions. With that methodology we could construct the complete passenger trajectory Door to door in Europe. The results indicate that the approach allows to approach infrastructure analysis at an early stage to have an initial estimation of the upper boundary of performance indicators. To exemplify this, we present the results for a case study in Europe.

Increasing hosting capacity of low-voltage distribution network using smart charging based on local and dynamic capacity limits

While the Municipality of Amsterdam wants to expand the electric vehicle public charging infrastructure to reach carbon-neutral objectives, the Distribution System Operator cannot allow new charging stations where low-voltage transformers are reaching their maximum capacity. To solve this situation, a smart charging project called Flexpower is being tested in some districts. Charging power is limited during peak times to avoid grid congestion and, therefore, enable the expansion of charging infrastructure while deferring grid investments. This work simulates the implementation of the Flexpower strategy with high penetration of electric vehicles, considering dynamic and local power limits, to assess the impact on both the satisfaction of electric vehicle users and the business model of the Charging Point Operator. A stochastic approach, based on Gaussian Mixture Models, has been used to model different profiles of electric vehicle users using data from the Amsterdam public electric vehicle charging infrastructure. Several key performance indicators have been defined to assess the impact of such charging limitations on the different stakeholders. The results show that, while Amsterdam’s existing public charging infrastructure can host just twice the current electric vehicle demand, the application of Flexpower will enable the growth in charging stations without requiring grid upgrades. Even with 7 times more charging sessions, Flexpower could provide a power peak reduction of 57% while supplying 98% of the total energy required by electric vehicle users.

Design Concepts for Empowerment through Urban Play

Playfulness intertwined with city-related themes, such as participatory planning and civic media are becoming more popular. In the last ten years, game designers have taken up the theme of play in relation to the urban environment. In this paper, we present a conceptual mapping of “urban play,” through the analysis of eight examples of urban games. Better conceptual tools are necessary to discuss and reflect on how games draw on, or deal with, urban issues. While urban games are diverse in medium, intent, and experience, across the spectrum analyzed in this paper, they hold the potential for various player experiences emerging through play that may be useful to designers. These are: a sense of agency and impact; feelings of relatedness and empathy; an awareness and understanding of complexity, perspective-taking and scenario-building, and either planning or taking action. The conceptual mapping offers scholars and practitioners a more nuanced vocabulary for designing games and playful interventions that might be used to tackle societal issues that either require or could benefit from genuine public involvement as engaged citizens.

Tightening up the nomenclature for non-physician clinicians