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Teeuwen, R.F.L. (author), Milias, V. (author), Bozzon, A. (author), Psyllidis, A. (author)The study of urban greenspaces typically relies on three types of data: people’s subjective perceptions collected via questionnaires, vegetation indices derived from satellite imagery, such as the Normalized Difference Vegetation Index (NDVI), and Land Use or Land Cover maps, such as OpenStreetMap (OSM). Data on people’s perceptions are...journal article 2024
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Psyllidis, A. (author)Can planning and design influence health and well-being in urban settings? Even though it was the public health issues faced by industrial cities that originally gave rise to the field of city planning, their paths have diverged over the years.However, how human settlements are planned, designed, and built can drastically improve or harm human...book chapter 2023
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Persson Waye, Kerstin (author), Löve, Jesper (author), Lercher, Peter (author), Dzhambov, Angel M (author), Klatte, Maria (author), Schreckenberg, Dirk (author), Psyllidis, A. (author), Bozzon, A. (author), Belke, Christin (author)Mental disorders among children and adolescents pose a significant global challenge. The exposome framework covering the totality of internal, social and physical exposures over a lifetime provides opportunities to better understand the causes of and processes related to mental health, and cognitive functioning. The paper presents a conceptual...journal article 2023
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Teeuwen, R.F.L. (author), Psyllidis, A. (author)Accessible outdoor spaces for unsupervised play are important for children’s health. However, parents impose constraints based on their perception of safety, which can have a significant impact on which play spaces are actually accessible to children. Such constraints are not taken into account by widely adopted accessibility indicators that use...conference paper 2023
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Milias, V. (author), Sharifi Noorian, S. (author), Bozzon, A. (author), Psyllidis, A. (author)City streets that feel safe and attractive motivate active travel behaviour and promote people’s well-being. However, determining what makes a street safe and attractive is a challenging task because subjective qualities of the streetscape are difficult to quantify. Existing evidence typically focuses on how different street features influence...conference paper 2023
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van Asten, T. (author), Milias, V. (author), Bozzon, A. (author), Psyllidis, A. (author)Neighborhood safety and its perception are important determinants of citizens’ health and well-being. Contemporary urban design guidelines often advocate urban forms that encourage natural surveillance or “eyes on the street” to promote community safety. However, assessing a neighborhood’s level of natural surveillance is challenging due to its...book chapter 2023
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Teeuwen, R.F.L. (author), Psyllidis, A. (author), Bozzon, A. (author)Recent evidence underscores the importance of greenspace exposure in promoting physical activity, and in having a positive impact on mental health and cognitive development. Accessibility has been identified to be the primary motivating factor when it comes to encouraging greenspace use and, correspondingly, exposure. Existing quantitative...journal article 2023
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Milias, V. (author), Psyllidis, A. (author)A growing body of literature underscores the societal and mental health benefits of facilitating interactions between different age groups. While it is acknowledged that age segregation might be experienced in daily activities beyond an individual’s home location, the majority of spatial age segregation studies and corresponding measures are...journal article 2022
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Psyllidis, A. (author), Gao, Song (author), Hu, Yingjie (author), Kim, Eun-Kyeong (author), McKenzie, Grant (author), Purves, Ross (author), Yuan, May (author), Andris, Clio (author)In this commentary, we describe the current state of the art of points of interest (POIs) as digital, spatial datasets, both in terms of their quality and affordings, and how they are used across research domains. We argue that good spatial coverage and high-quality POI features — especially POI category and temporality information — are key for...journal article 2022
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Van Kamp, Irene (author), Persson Waye, Kerstin (author), Kanninen, Katja (author), Gulliver, John (author), Bozzon, A. (author), Psyllidis, A. (author), Boshuizen, Hendriek (author), Selander, Jenny (author), van den Hazel, Peter (author), Brambilla, Marco (author)Background: <br/>There is increasing evidence that a complex interplay of factors within environments in which children grows up, contributes to children’s suboptimal mental health and cognitive development. The concept of the life-course exposome helps to study the impact of the physical and social environment, including social inequities, on...journal article 2022
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Psyllidis, A. (author), Duarte, Fábio (author), Teeuwen, R.F.L. (author), Salazar Miranda, Arianna (author), Benson, Tom (author), Bozzon, A. (author)As cities resume life in public space, they face the difficult task of retaining outdoor activity while decreasing exposure to airborne viruses, such as the novel coronavirus. Even though the transmission risk is higher in indoor spaces, recent evidence suggests that physical contact outdoors also contributes to an increased virus exposure....journal article 2021
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Mauri, A. (author), Psyllidis, A. (author), Bozzon, A. (author), Lee, J.S. (author), Pridmore, Jason (author), Van Zoonen, Liesbet (author), Giest, Sarah (author)Social web data increasingly complement studies of various social phenomena, especially when the availability of traditional data is limited. One such case is that of vulnerable young populations that are disengaged from employment, education, or training; usually referred to as NEETs. This paper explores the extent to which social media data...conference paper 2021
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Milias, V. (author), Psyllidis, A. (author)Points of interest (POIs) digitally represent real-world amenities as point locations. POI categories (e.g. restaurant, hotel, museum etc.) play a prominent role in several location-based applications such as social media, navigation, recommender systems, geographic information retrieval tools, and travel-related services. The majority of user...journal article 2021
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- Psyllidis, A. (author) book chapter 2020
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Sharifi Noorian, S. (author), Qiu, S. (author), Psyllidis, A. (author), Bozzon, A. (author), Houben, G.J.P.M. (author)Up-to-date listings of retail stores and related building functions are challenging and costly to maintain. We introduce a novel method for automatically detecting, geo-locating, and classifying retail stores and related commercial functions, on the basis of storefronts extracted from street-level imagery. Specifically, we present a deep...conference paper 2020
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Sharifi Noorian, S. (author), Psyllidis, A. (author), Bozzon, A. (author)Street-level imagery contains a variety of visual information about the facades of Points of Interest (POIs). In addition to general mor- phological features, signs on the facades of, primarily, business-related POIs could be a valuable source of information about the type and iden- tity of a POI. Recent advancements in computer vision could...conference paper 2019
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Qiu, S. (author), Psyllidis, A. (author), Bozzon, A. (author), Houben, G.J.P.M. (author)Knowledge about the organization of the main physical elements (e.g. streets) and objects (e.g. trees) that structure cities is important in the maintenance of city infrastructure and the planning of future urban interventions. In this paper, a novel approach to crowd-mapping urban objects is proposed. Our method capitalizes on strategies for...conference paper 2019
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- Psyllidis, A. (author) review 2018
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Sharifi Noorian, S. (author), Psyllidis, A. (author), Bozzon, A. (author)Location models have traditionally played an important role in suggesting sites for the placement of facilities, so that efficient service delivery is ensured. A common formulation of several location models is associated with the p-median problem, which aims to minimize the travel distance between support facilities and demand in a region....conference paper 2018
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Psyllidis, A. (author), Choiri, Hendra Hadhil (author)An understanding of how people perceive attractive or unattractive places in cities is vitally important to urban planning and policy making. Given the subjective nature of human perception and the ambiguous character of attractiveness as an attribute of urban places, it is challenging to quantify and reliably assess the extent to which a place...abstract 2018
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