Amsterdam faces the challenge of accommodating 50,000 to 90,000 new homes in the next five to ten years. That is equivalent to 10% of the city’s current total housing stock. The new homes have to be built within the existing urban fabric. This will entail high densities and the construction of new ‘un-Dutch’ typologies with high-rise residential buildings. Densification is currently accelerating in many Western cities and high-rise living environments are gaining ground as today’s typology. Yet these new typologies come with potentially serious risks to the liveability of cities in general and those new environments in particular (Asgarzadeh et al. 2012; Lindal and Hartig 2013; Gifford 2007). Urban designers and (landscape) architects are challenged to prevent and soften the negative impact that is often associated with extremely densified environments. This entails mitigating contradictive demands: to create high-density capacity andshape streetscapes that relate to a human scale. Designers might resort to the large body of applied design solutions and theories, yet these tend to be derived from more traditional urban fabrics of low-density developments (for example: e.g. Sennett 2018; Haas 2008; Jacobs 1993; Banerjee and Southworth 1990; Alexander et.al. 1977; Jacobs 1961).Therefore, the question of the research project Sensing Streetscape is if the classical design solutions are without any alterations, applicable in these new high density settings and able to create streetscapes with a human scale. A combination of emerging technologies and principles from both worlds; neuroscience and architecture offer the opportunity to investigate this question in-depth as a relation between the designed and the visually perceived streetscape.
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Western cities are rapidly densifying, and new building typologies are being invented to mitigate high-rise and balance residential, commercial and recreational functions. This vertical urbanization requires rethinking the traditional design of public space to promote citizens’ well-being. While the scarce studies on high-rise environments indicate several risks, including social fragmentation (Henderson-Wilson 2008; Love et al., 2014), mental stress and undermining attention restoration (Mazumder et al., 2020; Lindal & Hartig 2013), evidence on the potential salutary and mitigating effects of architectural design qualities is limited (Suurenbroek & Spanjar 2023).The Building for Well-being research project combines biometric and social data-collection techniques to address this gap. It builds on studies investigating how built environments allow user engagement (Mallgrave 2013; Simpson 2018) and afford important activities (Gibson 1966). This case study focuses on the experiences of predominant users of the NDSM Wharf in Amsterdam as it is transformed from a post-industrial site into a high-density, mixed-use neighborhood. Using eye-tracking, field and laboratory-based surveys, it explores how residents, passers-by and visitors visually experience, appreciate and perceive the restorative value of the wharf’s recently developed urban spaces.Thirty-six university students were randomly recruited as test subjects for the laboratory test and assigned to one of the three user groups. The resident and passer-by groups were primed for familiarity. Each group was assigned a distinct walking mode and participants were told to imagine they were strolling (residents), rushing (passers-by) or exploring (visitors). The exposure time to visual stimuli of participants was five seconds per image. Afterwards, they reported on the perceived restorative quality of ten urban spaces, focusing on: (1) sense of being away, (2) level of complexity-compatibility and (3) fascination, based on an adapted Restorative Components Scale (RCS, Yin et al. 2022; Laumann et al. 2001). Self-reported appreciation per scene was measured on a 10-point Likert scale and subjects indicated elements in the ten urban spaces they liked or disliked (see Figure 1). A semi-structured on-site survey was also carried out to investigate user experiences further and for triangulation. Thirty-one users, consisting of residents, passers-by and visitors to the NDSM Wharf, rated their appreciation of the site and its perceived restorative and design qualities (following Ewing & Clemente, 2013) on a 10-point Likert scale.The meta-data analysis of RCS statistics, appreciation values, eye-tracking metrics and heatmaps reveals distinct visual patterns among user groups. This points to the influence of environmental tasks and roles (see Figure 2). Strolling and exploring resulted in a comprehensive visual exploration of scenes with a higher mean total fixation count and shorter mean total fixation duration than goal-oriented walking. It suggests that walking mode determines the level of openness to the environment and that architectural attributes can also steer visual exploration. Scenes with the highest appreciation scores correlated with the RCS outcomes. They displayed coherence and opportunities for social engagement, contrasting with scenes with inconsistent industrial and contemporary features. These findings provide spatial designers with insights into the subliminal experiences of predominant user groups to promote well-being in urban transformation.
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Western cities are rapidly densifying, and new building typologies are beinginvented to mitigate high-rise and balance residential, commercial andrecreational functions. This vertical urbanization requires rethinking thetraditional design of public space to promote citizens’ well-being. While the scarce studies on high-rise environments indicate several risks, including social fragmentation and privatization of public functions (Henderson-Wilson 2008; Love et al., 2014), mental stress and undermining attention restoration (Mazumder et al., 2020; Lindal & Hartig 2013), evidence on the potential salutary and mitigating effects of architectural design qualities is limited (Suurenbroek & Spanjar 2023).The Building for Well-being research project combines biometric and socialdata-collection techniques to address this gap. It builds on studies investigatinghow built environments allow user engagement (Mallgrave 2013; Simpson2018) and afford important activities (Gibson 1966). This case study focuseson the experiences of predominant users of the NDSM Wharf in Amsterdamas it is transformed from a post-industrial site into a high-density, mixeduseneighborhood. Using eye-tracking, field and laboratory-based surveys, itexplores how residents, passers-by and visitors visually experience, appreciateand perceive the restorative value of the wharf’s recently developed urbanspaces.Thirty-six university students were randomly recruited as test subjects for thelaboratory test and assigned to one of the three user groups. The residentand passer-by groups were primed for familiarity. Each group was assigneda distinct walking mode and participants were told to imagine they werestrolling (residents), rushing (passers-by) or exploring (visitors). The exposuretime to visual stimuli of participants was five seconds per image. Afterwards,they reported on the perceived restorative quality of ten urban spaces,focusing on: (1) sense of being away, (2) level of complexity-compatibilityand (3) fascination, based on an adapted Restorative Components Scale (RCS,Yin et al. 2022; Laumann et al. 2001). Self-reported appreciation per scenewas measured on a 10-point Likert scale and subjects indicated elements inthe ten urban spaces they liked or disliked (see Figure 1). A semi-structuredon-site survey was also carried out to investigate user experiences furtherand for triangulation. Thirty-one users, consisting of residents, passers-byand visitors to the NDSM Wharf, rated their appreciation of the site and itsperceived restorative and design qualities (following Ewing & Clemente, 2013)on a 10-point Likert scale.The meta-data analysis of RCS statistics, appreciation values, eye-trackingmetrics and heatmaps reveals distinct visual patterns among user groups. Thispoints to the influence of environmental tasks and roles (see Figure 2). Strollingand exploring resulted in a comprehensive visual exploration of scenes with ahigher mean total fixation count and shorter mean total fixation duration thangoal-oriented walking. It suggests that walking mode determines the level ofopenness to the environment and that architectural attributes can also steervisual exploration. Scenes with the highest appreciation scores correlatedwith the RCS outcomes. They displayed coherence and opportunities forsocial engagement, contrasting with scenes with inconsistent industrial andcontemporary features. These findings provide spatial designers with insightsinto the subliminal experiences of predominant user groups to promote wellbeing in urban transformation.
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Background & aims: Optimal nutritional support during the acute phase of critical illness remains controversial. We hypothesized that patients with low skeletal muscle area and -density may specifically benefit from early high protein intake. Aim of the present study was to determine the association between early protein intake (day 2–4) and mortality in critically ill intensive care unit (ICU) patients with normal skeletal muscle area, low skeletal muscle area, or combined low skeletal muscle area and -density. Methods: Retrospective database study in mechanically ventilated, adult critically ill patients with an abdominal CT-scan suitable for skeletal muscle assessment around ICU admission, admitted from January 2004 to January 2016 (n = 739). Patients received protocolized nutrition with protein target 1.2–1.5 g/kg/day. Skeletal muscle area and -density were assessed on abdominal CT-scans at the 3rd lumbar vertebra level using previously defined cut-offs. Results: Of 739 included patients (mean age 58 years, 483 male (65%), APACHE II score 23), 294 (40%) were admitted with normal skeletal muscle area and 445 (60%) with low skeletal muscle area. Two hundred (45% of the low skeletal muscle area group) had combined low skeletal muscle area and -density. In the normal skeletal muscle area group, no significant associations were found. In the low skeletal muscle area group, higher early protein intake was associated with lower 60-day mortality (adjusted hazard ratio (HR) per 0.1 g/kg/day 0.82, 95%CI 0.73–0.94) and lower 6-month mortality (HR 0.88, 95%CI 0.79–0.98). Similar associations were found in the combined low skeletal muscle area and -density subgroup (HR 0.76, 95%CI 0.64–0.90 for 60-day mortality and HR 0.80, 95%CI 0.68–0.93 for 6-month mortality). Conclusions: Early high protein intake is associated with lower mortality in critically ill patients with low skeletal muscle area and -density, but not in patients with normal skeletal muscle area on admission. These findings may be a further step to personalized nutrition, although randomized studies are needed to assess causality.
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Background and objectivesBefore the Covid-19 pandemic, important social studies already indicated the severe negative feedback associated with high-rise developments. During the Covid-19 pandemic, citizens were confronted with their neighbourhoods’ insufficient restorative capacity to maintain their health and well-being. New methods are urgently required to analyse and learn from existing high-density developments to prevent a repetition of past mistakes and to catalyse the salutary effects of architecture in new developments.Process and methods (for empirical research)The Sensing Streetscapes research investigated the potential of emerging biometric technologies to examine the effects of commonly applied urban design principles in six western cities. In one outdoor and four laboratory tests, eye-tracking technology with sound-recording and Galvanic Skin Response captured subjects’ (un)conscious attention patterns and arousal levels when viewing streets on eye level. Triangulation with other techniques, such as mouse tracking to record participants’ appreciation value and expert panels from spatial design practice, showed the positive and negative impact of stimuli.Main results (or main arguments in the case of critical reviews)The preliminary results provide a dynamic understanding of urban experience and how it is affected by the presence or absence of design principles. The results suggest that streets with high levels of detail and variety may contribute to a high level of engagement with the built environment. It also shows that traffic is likely an important factor in causing stress and diminishing the restorative capacity society seeks.Implications for research and practice/policy | Importance and originality of the contributionThe research study led to the development of a Dynamic User Experience Assessment (D-UXA) tool that supports researchers and designers in understanding the impact of design decisions on users’ experience, spatial perception and (walking) behaviour. D-UXA enables a human-centred analysis and is designed to fill the gap between traditional empirical methods and aspirations for an evidence-based promotion of human health and wellbeing in (high-density) urban developments.
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The accelerated densification of Western European cities driven by economic growth has major spatial implications for their overall livability. Often, new homes must be built within an existing urban fabric, creating higher density environments. However, the impact on the experience of these high-density environments at eye level remains unstudied and unknown. This chapter reviews two experiments that sought to understand the unconscious reception of streetscapes using eye-tracking technology to investigate the sequence of users’ (visual) experience, their behavior and perception. The research project seeks to establish more ‘evidence-based’ design guidelines for streetscapes in high-rise urban settings.This chapter reviews two experiments that sought to understand the unconscious reception of streetscapes using eye-tracking technology to investigate the sequence of users’ experience, their behavior and perception. Eye-tracking results of Experiment 1 show that the movement of pedestrians, cyclists and cars crossing the street created the most eye fixation for most participants. In general, the eye-tracking results from Experiment 2 show that participants’ eyes followed the length of the facades toward the end of the street and the horizon. The preliminary results suggest that the assessed design principles ‘Active ground floor’ and ‘Ornate facades’ might be important factors in predicting dominant eye patterns. The chapter explores the application of eye-tracking technology in urban design to gain a deeper understanding of the physical-behavioral interrelationship of streetscapes in European high-density built environments. The accelerated densification of Western European cities driven by economic growth has major spatial implications for their overall livability.
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Nature in cities serves a multitude of purposes, one of which is that it provides citizens opportunities to recover from stressful daily urban life. Such stress recovering effects of nature can be experienced through urban green, which in urban planning and design contexts can be divided into large natural areas - urban green space - and small scale elements in urban streets: the urban greenscape. The current study aims at finding the extent to which various small scale natural elements in residential streets and their possible configurations influence citizens' preferences for those streets. The research was conducted through an online survey in four cities in the Netherlands (n = 4,956). It used stated choice methods in a virtual environment street design. The method yielded high quality data, indicating that the use of virtual environments and imagery is suitable for stated choice research in the built environment. The results show that especially trees very strongly influence preference, indicating they deserve more attention and space in cities. Grass, which is typically favored by local governments, and vertical green have the smallest effects in residential streets. Furthermore, the concept of greenscape intensity is introduced as the intensities of both the element and the configuration were found to be highly relevant. The results clearly show that the higher either of these intensities, the more likely a respondent will prefer the greenscape design. Furthermore, low intensity on the one can be compensated by high intensity on the other. With these results, urban design professionals and local governments can better trade-off the different aspects of costs versus positive effects of urban greenscape designs.
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The coronavirus pandemic highlighted the vital role urban areas play in supporting citizens’ health and well-being (Ribeiro et al., 2021). In times of (personal) vulnerability, citizens depend on their neighbourhood for performing daily physical activities to restore their mental state, but public spaces currently fall short in fulfilling the appropriate requirements to achieve this. The situation is exacerbated by Western ambitions to densify through high-rise developments to meet the housing demand. In this process of urban densification, public spaces are the carriers where global trends, local ambitions and the conditions for the social fabric materialise (Battisto & Wilhelm, 2020). High-rise developments in particular will determine users’ experiences at street-level. Consequently, they have an enduring influence on the liveability of neighbourhoods for the coming decades but, regarding the application of urban design principles, their impact is hard to dissect (Gifford, 2007).Promising emerging technologies and methods from the new transdisciplinary field of neuroarchitecture may help identify and monitor the impact of certain physical characteristics on human well-being in an evidence-based way. In the two-year Sensing Streetscapes research study, biometric tools were tested in triangulation with traditional methods of surveys and expert panels. The study unearthed situational evidence of the relationship between designed and perceived spaces by investigating the visual properties and experience of high-density environments in six major Western cities. Biometric technologies—Eye-Tracking, Galvanic Skin Response, mouse movement software and sound recording—were applied in a series of four laboratory tests (see Spanjar & Suurenbroek, 2020) and one outdoor test (see Hollander et al., 2021). The main aim was to measure the effects of applied design principles on users’ experiences, arousal levels and appreciation.Unintentionally, the research study implied the creation of a 360° built-environment assessment tool. The assessment tool enables researchers and planners to analyse (high-density) urban developments and, in particular, the architectural attributes that (subliminally) affect users’ experience, influencing their behaviour and perception of place. The tool opens new opportunities for research and planning practice to deconstruct the successes of existing high-density developments and apply the lessons learned for a more advanced, evidence-based promotion of human health and well-being.ReferencesBattisto, D., & Wilhelm, J. J. (Eds.). (2020). Architecture and Health Guiding Principles for Practice. Routledge, Taylor & Francis Group. Gifford, R. (2007). The Consequences of Living in High-Rise Buildings. Architectural Science Review, 50(1), 2–17. https://doi.org/https://doi.org/10.3763/asre.2007.5002 Hollander, J. B., Spanjar, G., Sussman, A., Suurenbroek, F., & Wang, M. (2021). Programming for the subliminal brain: biometric tools reveal architecture’s biological impact. In K. Menezes, P. de Oliveira-Smith, & A. V. Woodworth (Eds.), Programming for Health and Wellbeing in Architecture (pp. 136–149). Routledge, Taylor & Francis Group. https://doi.org/https://doi.org/10.4324/9781003164418 Ribeiro, A. I., Triguero-Mas, M., Jardim Santos, C., Gómez-Nieto, A., Cole, H., Anguelovski, I., Silva, F. M., & Baró, F. (2021). Exposure to nature and mental health outcomes during COVID-19 lockdown. A comparison between Portugal and Spain. Environment International, 154, 106664. https://doi.org/https://doi.org/10.1016/j.envint.2021.106664 Spanjar, G., & Suurenbroek, F. (2020). Eye-Tracking the City: Matching the Design of Streetscapes in High-Rise Environments with Users’ Visual Experiences. Journal of Digital Landscape Architecture (JoDLA), 5(2020), 374–385. https://gispoint.de/gisopen-paper/6344-eye-tracking-the-city-matching-the-design-of-streetscapes-in-high-rise-environments-with-users-visual-experiences.html?IDjournalTitle=6
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Urban renewal and urban area development projects are by nature highly complex processes involving a multiplicity of professionals, stakeholders, and conflicting interests. Adding to this complexity are the formulated ambitions and societal challenges projects have to answer to. One of these ambitions emphasizes a more inclusive planning process, involving the inhabitants in all stages of the planning process. In terms of design, another challenge is to create environments on a human scale while building in high density such as with tall residential buildings. The metropolitan area of Amsterdam intends to have 100,000 new dwellings by 2025. Most of these dwellings have to be added within the existing urban fabric, planned on obsolete inner-city brownfield locations, at the waterfront, nearby highways whereas others are going to be built in deprived neighborhoods. The deprived neighborhoods are mainly located in the postwar areas of Amsterdam, on its northern, western, and south-eastern sides. The deprived neighborhood called the Bijlmermeer located on the south-eastern side of the city, for instance was the first high-rise development project in the Netherlands. It was designed as a single project with identical high-rise buildings in a hexagonal grid surrounded with large green spaces.These deprived, modernistic neighborhoods lack the classic housing block structures with a clear articulation of buildings and street spaces. They appear to be responsible for an ‘inhuman’ scale and demonstrate the lasting impact critical design flaws can have on the daily lives of inhabitants. Hence, the question is how to develop liveable environments where people feel fully supported by building architecture and streetscape configuration. To prevent new urban area developments that will again fail to incorporate human scale, scientific methods and user input are needed to inform the practice of planning and design, and their applied design solutions. Building on two research projects (one on participatory planning and the other on neuroarchitecture research), we explore how the newly emerging field of neuroarchitecture - and the eye-tracker in particular, might enhance urban area developments on a human scale.
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