Search Results (62)

Pluvial floods are increasingly affecting urban areas worldwide. Despite growing media attention and clear owner responsibility for reducing climate-related risk for buildings in Swedish national adaptation policy, adaptation action remains slow. Understanding how different property owner categories view and act on flood risks is key for developing better incentive structures and support for accelerating adaptation action. While tenant-owned housing is a common form of housing tenure in Sweden, studies are lacking. This study enhances understanding of pluvial flood risk and adaptation views and actions by tenant-owned housing associations in two Swedish cities. It is based on assessments of 69 apartment buildings within eleven tenant-owned associations and semi-structured interviews with their eleven chairpersons. The study indicates that tenant-owned associations grossly underestimate their flood risks and responsibilities for climate adaptation, even though many buildings studied are at significant risk, and most associations have been impacted by floods, some severely and recurrently. The patronization of flood risk and responsibility for adaptation is attributed to several factors: underestimating risks and consequences, devaluing the benefit of one’s own adaptation actions, lacking knowledge about climate adaptation measures for buildings, and (overly) generous insurance terms. The findings confirm low adaptation action among housing associations, even those with recurring floods, which is concerning given the strong reliance on property-owner adaptation in national adaptation policy. Full article

Black elder, Sambucus nigra, is a non-native but now partly naturalized shrub in Sweden; it has been cultivated here at least since the Middle Ages. Previously, this plant was associated with a supernatural being to whom sacrifices were made, and its fruits were used in folk medicine and wood for fuel and crafts. Traditional economic uses vanished with industrialization and urbanization and black elder was mostly planted as an ornamental shrub in urban parks. At the end of the 1970s, however, it made a sudden comeback: city dwellers started to gather flowers to make a refreshing non-alcoholic cordial. This diachronic study of Sambucus nigra spanning over a millennium reflects various attitudes and uses within the context of a changing human society. In addition to the simple but popular cordial, side dishes and desserts made of its fragrant flowers are becoming increasingly popular in modern Swedish cuisine. Globally it has also been (re)discovered and the utilization of this plant is growing: its flowers are used to add flavor to soft drinks, salads, desserts and various dishes; berries are used for medicine and in cooking, especially with meats, and its future uses seem to be limited only by human imagination. Full article

William H. Whyte took on the challenge of assessing the amount of public space in a city based on its carrying capacity, pointing out that popular public spaces offer more room for social activities. However, the absence of qualitative characteristics makes this assessment even more challenging to implement. This study aims to find a method to gauge the carrying capacity of urban public spaces by calculating the social space ratio for pedestrian-only streets in Karlstad, Sweden, and quantifying this relationship. The social space ratio represents the proportion of public spaces that foster social interaction throughout their entire area. The method began by selecting the most relevant conceptual framework for social public spaces and then sought theory-based characteristics to assign to seven social activities on Karlstad’s pedestrian-only streets. The authors performed a comprehensive search of the literature utilizing the PRISMA approach, gathering information from credible references, placemaking toolkits, transportation toolkits, and academic sources. This was performed to determine the weighting factors and effective social areas by evaluating these activities in terms of nine categories of the chosen framework: accessibility, traffic, social infrastructure, security, places to meet, senses and experience, architecture and aesthetics, development and maintenance, and control and programming. We devised a method to calculate the carrying capacity and social space ratio of Karlstad’s pedestrian-only streets, resulting in a ratio of 0.38. The research led to the development of eight quality-control tools to analyze the seven social activities in public places. This innovative approach helps researchers and municipal planners evaluate the benefits and drawbacks of these spaces, contributing significantly to Swedish urban planning and enabling future studies to create a social area factor. Full article

Sustainability encompasses three dimensions: environmental, economic, and social. Among these dimensions, social sustainability presents the most challenging definition and measurement, leading to its frequent neglect. There is therefore a need to increase the measurability of social sustainability. There are several methods for measuring social sustainability, but we can broadly categorize them into two groups: those that are simple and easy to use, and those that are more comprehensive but more challenging to use. Furthermore, there can be a case for increasing the local adaptation of assessment methods regarding social sustainability. In this study, a new easy-to-use assessment method is developed and calibrated to Swedish conditions. We created a total of 40 questions, evenly distributed across 8 categories: architecture and aesthetics, places to meet, social infrastructure, accessibility, traffic, security, senses and experience, and development. The new method strives to be evidence-based and adapted to Swedish conditions. The study resulted in an easy-to-use assessment method adapted to local conditions that can be suitable for simple evaluations of social sustainability in the design of public places. It can be particularly useful when laymen need to understand where the place’s strengths and weaknesses lie in a social context. Since the method is based on subjective assessments, an interesting future study could investigate whether different people can achieve the same results with the developed assessment method. Full article

The present study aimed to explore the online shopping of medicines from demographic, geographic, psychographic, and behavioral factors. A quantitative survey design was used with a quote sample representing the Swedish population regarding age, gender, and residential area. In total, 1863 persons responded to a survey, including measures of age, gender, income, education, area of residence, personality traits (BFI-10), values (Rokeach Value Survey), self-estimated health-status, internet usage, online shopping in general, and online shopping of medicines. Firstly, the data were analyzed with chi-squares and independent t-tests. From these initial analyses, online shopping of medicines was associated with young age, female gender, high income and education, living in a big city, extraversion, several values of desirable end-states of existence (e.g., self-respect, a sense of accomplishment, and pleasure), internet usage, and general online shopping. Secondly, the significant (p < 0.05) variables from the initial analysis were included in a logistic regression analysis. This comprehensive model showed that online medication shoppers are best predicted by being female and the use of internet. Unlike what was previously known about medication shoppers, the typical online medication shopper appears to be driven by hedonistic values and self-actualization, rather than health status. We suggest that further research replicate this study outside and inside Sweden, and that health status is measured in a different way. Full article

Due to unsustainable land management and climate change, floods have become more frequent and severe over the past few decades and the problem is exacerbated in urban environments. In the context of climate-proofing cities, the importance of nature-based solutions (NBSs), obtaining relevant outcomes in the form of ecosystem services, has been highlighted. Although the role of ecosystem services in building resilience against negative climate change effects is widely recognized and there is an identified need to better integrate ecosystem services into urban planning and design, this has proven difficult to operationalize. A critical limitation is that modeling is a time-consuming and costly exercise. The purpose is to roughly estimate the ecosystem service of water run-off mitigation through simplified, cost-effective, and user-friendly modelling at three nested biophysical scales, under four climate change scenarios. Using the Swedish city of Gothenburg as an example, we propose an approach for navigating NBS-oriented flooding adaptation strategies, by quantifying the ecosystem service of water run-off mitigation at three nested biophysical scales, under four climate change scenarios, hence, proposing an approach for how to navigate nature-based solutions in a multi-scale, social–ecological urban planning context against present and future flooding events. Our findings validate the effectiveness of employing an ecosystem service approach to better comprehend the significant climate change issue of flooding through user-friendly and cost-efficient modeling. Full article

Weather forecasting has always been challenging due to the atmosphere’s complex and dynamic nature. Weather conditions such as rain, clouds, clear skies, and sunniness are influenced by several factors, including temperature, pressure, humidity, wind speed, and direction. Physical and complex models are currently used to determine weather conditions, but they have their limitations, particularly in terms of computing time. In recent years, supervised machine learning methods have shown great potential in predicting weather events accurately. These methods use historical weather data to train a model, which can then be used to predict future weather conditions. This study enhances weather forecasting by employing four supervised machine learning techniques—artificial neural networks (ANNs), support vector machines (SVMs), random forest (RF), and k-nearest neighbors (KNN)—on three distinct datasets obtained from the Weatherstack database. These datasets, with varying temporal spans and uncertainty levels in their input features, are used to train and evaluate the methods. The results show that the ANN has superior performance across all datasets. Furthermore, when compared to Weatherstack’s weather prediction model, all methods demonstrate significant improvements. Interestingly, our models show variance in performance across different datasets, particularly those with predicted rather than observed input features, underscoring the complexities of handling data uncertainty. The study provides valuable insights into the use of supervised machine learning techniques for weather forecasting and contributes to the development of more precise prediction models. Full article

Positive energy district (PED) is a novel idea aimed to have an annual surplus of renewable energy and net zero greenhouse gas emissions within an area. However, it is still an ambiguous concept, which might be due to the complexity of city district projects with interconnected infrastructures and numerous stakeholders involved. This study discusses various aspects of PED implementation and presents practitioners’ experiences with the PED concept, challenges, and facilitators they have faced with real projects. The study is based on interviews with ten Swedish professionals. The major challenges reported for PED implementation were local energy production and energy flexibility, sub-optimization, legislation, suitable system boundaries, and involvement of stakeholders. Most of the interviewees mentioned improved collaboration, integrated innovative technology, political support, and climate change mitigation goals as important facilitators. The interviewees highlighted the importance of a local perspective and considered each city’s preconditions when developing a PED project. The study emphasizes that to facilitate PED implementation and replication in cities, more knowledge and clarity is required about PED such as on the definition and system boundaries. Full article

This paper investigates the charging needs and charger utilisation of a system of battery electric trucks and their public fast chargers, along the highway between the Swedish cities of Helsingborg and Stockholm, in a possible future scenario in which all trucks are battery electric. The system is investigated via an agent-based model which simulates a typical day with current levels of truck traffic on the road. The traffic flow is based on hourly truck flow data during a day and the annual flow of trucks. The findings indicate major potential for a well-functioning system of public chargers for trucks, with high utilisation, few queuing problems at charging stations, cheap public fast charging and a robust response to queues caused by peaks or increases in the traffic flow. The number of 900 kW chargers along the road needed to achieve this has been estimated at 140, and the utilisation factor for the chargers is predicted to be 30%. Full article

The building sector is a major contributor to greenhouse gases, consuming significant energy and available resources. Energy renovation of buildings is an effective strategy for decarbonisation, as it lowers operational energy and avoids the embodied impact of new constructions. To be successful, the energy renovation process requires meaningful building models. However, the time and costs associated with obtaining accurate data on existing buildings make large-scale evaluations unrealistic. This study proposes a methodology to streamline building energy models from open-access datasets for urban scalability. The methodology was tested on six case study buildings representing different typologies of the Swedish post-war construction period. The most promising results were obtained by coupling OpenStreetMap-sourced footprints with energy performance declarations and segmented archetypes for building characterisation. These significantly reduced simulation time while retaining similar accuracy. The suggested methodology streamlines building energy modelling with a promising degree of automation and without the need for input from the user. The study concludes that municipalities and building owners could use a such methodology to develop roadmaps for cities to achieve carbon neutrality and evaluate energy renovation solutions. Future work includes achieving higher accuracy of the generated energy models through calibration, performing renovation analysis, and upscaling from individual buildings to neighbourhoods. Full article

Three-dimensional city models are increasingly being used for analyses and simulations. To enable such applications, it is necessary to standardise semantically richer city models and, in some cases, to connect the models with external data sources. In this study, we describe the development of a new Swedish specification for 3D city models, denoted as 3CIM, which is a joint effort between the three largest cities in Sweden—Stockholm, Gothenburg, and Malmö. Technically, 3CIM is an extension of the OGC standard CityGML 2.0, implemented as an application domain extension (ADE). The ADE is semantically thin, mainly extending CityGML 2.0 to harmonise with national standards; in contrast, 3CIM is mainly based on linkages to external databases, registers, and operational systems for the semantic part. The current version, 3CIM 1.0, includes various themes, including Bridge, Building, Utility, City Furniture, Transportation, Tunnel, Vegetation, and Water. Three test areas were created with 3CIM data, one in each city. These data were evaluated in several use-cases, including visualisation as well as daylight, noise, and flooding simulations. The conclusion from these use-cases is that the 3CIM data, together with the linked external data sources, allow for the inclusion of the necessary information for the visualisation and simulations, but extract, transform, and load (ETL) processes are required to tailor the input data. The next step is to implement 3CIM within the three cities, which will entail several challenges, as discussed at the end of the paper. Full article

The purpose of this study is to provide a system perspective on the barriers to the development of a fossil-free and thus more sustainable urban freight system and to provide insights regarding these barriers and how they impede progress. The system perspective complements earlier research, where barriers were identified in delimited parts of freight systems. Here, the urban freight system in a Swedish city is explored using an inductive and qualitative approach, according to which barriers are both detailed and categorized. This study is based on empirical data concerning the perceptions of multiple stakeholders in one system. The interrelationships between barrier categories and changes to the urban freight system are explored through management theory. This study provides a unique overview of the barriers to development in one system and insights concerning these barriers and how they impede development of the system. Ten categories of barriers are identified: technology, infrastructure, economy, knowledge, policy, goals, organization, cooperation, politics, and societal factors. The categories can be divided into four different types, which are related to each other and to the overall system in various ways, based on how they impede the development toward sustainability. Future research could advance this theoretical knowledge by continuing to study urban freight system development processes and by adding insights from other contexts, stakeholders, and theoretical areas. Full article

While the populations of cities continue to grow, institutions are demanding more sustainability in urban development, leading to a great increase in the complexity of urban planning. The need to consider social, legal, environmental, and economic parameters challenges the traditional urban planning processing in favor of an optimized and automated process. Generative design has the potential to optimize the design phase by automatically generating spatial design solutions and analyzing them in the design phase. The objective of the present study is to analyze the traditional urban planning process and to compare it with a digitalized driven process by using generative design. This study uses a mixed approach with four research methods: document analysis, survey, interviews, and a case study based in Sweden. The critical analysis of the Swedish urban planning process makes it possible to define the main barriers to a digitalized process. Results also show the benefits of using generative design for a more sustainable and faster design process. Two main conclusions can be made from this study: institutional and organizational changes are necessary to achieve digitalization, and generative design proves to be a useful tool that should be considered to support the digitalization of urban planning. Full article

This paper analyses the distribution of social infrastructure (accessibility to services and job opportunities) in a perspective of spatial lifestyle stratification in the Stockholm region. The study is based on a questionnaire completed by 1160 respondents, capturing individual data on attitudes, lifestyles and demography, and urban morphological qualities developed from high resolution register data. The spatial social stratification is based on a spatial cluster analysis on six lifestyles: highly success-oriented; success-oriented with high work ethics; conscious young and elder; people with weak motivations; designers; and middle-class bourgeois. They are spatially distributed in eight overlapping spatial clusters, namely: highly success-oriented and socially mixed central inner city; designers’ inner suburbia; socially mixed inner suburbia; middle-class bourgeois suburbia; highly success-oriented suburbia; conscious young-elder suburbia; socially mixed exurbia; and socially mixed rurality. It turns out that people characterized by weak motivation lifestyle (low income, low education level, not success oriented, etc.) are the most negatively affected lifestyle cluster concerning accessibility to jobs and service. A total of 45% of the ‘weak motivation lifestyle’ respondents reside in ‘socially mixed exurbia’ and ‘socially mixed rurality’. They experience less than 20% of social infrastructure compared to, in this respect, the most privileged spatial lifestyle cluster, the ‘highly success-oriented and socially mixed central inner city’ cluster. Still, surprisingly, this ‘weak motivation’ lifestyle is also concentrated in the ‘socially mixed inner suburbia’ cluster. One reason for this dual spatial concentration might be the Swedish rental policy, linked to residential use-values and a queuing system, instead of exchange values. This policy allows for a complex spatial social stratification influenced by a range of factors (lifestyle and attitudes among others), and not merely income. Full article

For many students with migrant backgrounds and newly arrived students, their mother tongue is not only a knowledge and a school grade issue, but also a reflection of their identity and a sense of belonging, which are shaped by political structures. In this article, we analyze the role of mother tongue in Swedish policy documents and the way teachers and students see the role mother tongue in two Swedish schools: how do school professionals and students view the importance of mother tongue? What measures are taken to encourage the mother tongues of students with a migration background and newly arrived students? What are the implications of and obstacles to studying one’s mother tongue? We will look at levers of integration where school staff, as well as policy documents, encourage modes of incorporation, but also do identify obstacles concerning the practice of mother tongue instruction. Our article shows that although students long for a double cultural belonging, the policy documents are ambiguous and create an unclear promise for migrant students and their mother tongue teachers concerning multicultural incorporation. In practice, they have little evidence that maintaining their cultural background represents a strong value in Sweden. Ambiguous attitude towards mother tongue can be seen as a symbolic response to Sweden as a country which took a turn regarding its migration policy. The integration of residents with a migrant background is constantly questioned in the media and became a central issue in political debates. The implementation of mother tongue instruction reflects Sweden’s current state of discussing migration concerning integration policies somewhere between recognition and stigmatization. The data are drawn from student interviews, interviews with mother tongue teachers, and field notes in two schools in one of the biggest cities in Sweden. Full article