Search Results (199)

This study investigates urban heat vulnerabilities in Seville, Spain, using a multidimensional framework that integrates remote sensing, Space Syntax, and social vulnerability metrics. This research identifies Heat Boundaries (HBs), which are critical urban entities with elevated Land Surface Temperatures (LSTs) that act as barriers to adjacent vulnerable neighbourhoods, disrupting both physical and social continuity and environmental equity, and examines their relationship with the urban syntax and social vulnerability. The analysis spans two temporal scenarios: a Category 3 heatwave on 26 June 2023 and a normal summer day on 14 July 2024, incorporating both daytime and nighttime satellite-derived LST data (Landsat 9 and ECOSTRESS). The results reveal pronounced spatial disparities in thermal exposure. During the heatwave, peripheral zones recorded extreme LSTs exceeding 53 °C, while river-adjacent neighbourhoods recorded up to 7.28 °C less LST averages. In the non-heatwave scenario, LSTs for advantaged neighbourhoods close to the Guadalquivir River were 2.55 °C lower than vulnerable high-density zones and 3.77 °C lower than the peripheries. Nocturnal patterns showed a reversal, with central high-density districts retaining more heat than the peripheries. Correlation analyses indicate strong associations between LST and built-up intensity (NDBI) and a significant inverse correlation with vegetation cover (NDVI). Syntactic indicators revealed that higher Mean Depth values—indicative of spatial segregation—correspond with elevated thermal stress, particularly during nighttime and heatwave scenarios. HBs occupy 17% of the city, predominantly composed of barren land (42%), industrial zones (30%), and transportation infrastructure (28%), and often border areas with high social vulnerability. This study underscores the critical role of spatial configuration in shaping heat exposure and advocates for targeted climate adaptation measures, such as HB rehabilitation, greening interventions, and Connectivity-based design. It also presents preliminary insights for future deep learning applications to automate HB detection and support predictive urban heat resilience planning. Full article

This study investigates strategies for urban-scale renewable energy integration through a photovoltaic-centric approach, with a case study of a district in Barcelona. The methodology integrates spatial and morphological data using a geographic information system (GIS)-based and clustering framework to address challenges of CO₂ emissions, air pollution, and energy inefficiency. Rooftop availability and photovoltaic (PV) design constraints are analysed under current urban regulations. The spatial analysis incorporates building geometry and solar exposure, while an evolutionary optimisation algorithm in Grasshopper refines shading analysis, energy yield, and financial performance. Clustering methods (K-means and 3D proximity) group PV panels by solar irradiance uniformity and spatial coherence to enhance system efficiency. Eight PV deployment scenarios are evaluated, incorporating submodule integrated converter technology under a solar power purchase agreement model. Results show distinct trade-offs among PV scenarios. The standard fixed tilted (31.5° tilt, south-facing) scenario offers a top environmental and performance ratio (PR) = 66.81% but limited financial returns. In contrast, large- and huge-sized modules offer peak financial returns, aligning with private-sector priorities but with moderate energy efficiency. Medium- and large-size scenarios provide balanced outcomes, while a small module and its optimised rotated version scenarios maximise energy output yet suffer from high capital costs. A hybrid strategy combining standard fixed tilted with medium and large modules balances environmental and economic goals. The district’s morphology supports “solar neighbourhoods” and demonstrates how multi-scenario evaluation can guide resilient PV planning in Mediterranean cities. Full article

One of the most significant factors shaping the formation of new urban structures is climate change—including global warming and the associated emerging issues—heatwaves, storms, hurricanes, floods, droughts, fires and others. In recent times, new threats have emerged, including war risks, radiation, pandemics and other potential factors, whose devastating consequences are no less severe than those of climate change. Concerning these and other potential threats, this work aims to develop a new, sustainable urban structure element—a territorial unit or complex to be used in creating a new city planning framework. The formation of this sustainable urban unit or complex is based on three fundamental sustainability principles—social, ecological and economic—the harmonious interaction of which can enable the creation of a safe, healthy and convenient urban environment for living, working and leisure. Such a structural urban complex would consist of a group of neighbourhoods with various building densities, enclosed by public transport streets that integrate the complex into the city’s overall spatial structure. To support the complex’s functioning, a structural element—a green core—is planned at its centre, serving as a space for residents’ recreation, protection from various threats and social interaction. Given that this technical, structural and urban territorial unit, in terms of its autonomous functionality, structure, composition, significance and other characteristics, is identical to a natural cell, it is proposed (based on the principles of bionics) to name this structural urban territorial unit an ‘urban cell’ or ‘urbocell’ for semantic clarity. Full article

The management of power supply and distribution is becoming increasingly challenging because of the significant increase in energy demand brought on by global population growth. Buildings are estimated to be accountable for 40% of the worldwide use of energy, which underlines how important accurate demand estimation is for the design and construction of electrical infrastructure. In this respect, transmission and distribution network planning must be adjusted to ensure a smooth transition to the National Interconnected System (NIS). A technical and analytical scientific approach to a modern neighbourhood in Ecuador called “the Nuevo Samborondón” case study (NSCS) is laid out in this article. Collecting geo-referenced data, evaluating the current electrical infrastructure, and forecasting energy demand constitute the first stages in this research procedure. The sector’s energy behaviour is accurately modelled using advanced programs such as 3D design software for modelling and drawing urban architecture along with a whole building energy simulation program and geographical information systems (GIS). For the purpose of recreating several operational situations and building the distribution infrastructure while giving priority to the current urban planning, an electrical system model is subsequently developed using power system analysis software at both levels of transmission and distribution. Furthermore, seamless digital substations are suggested as a component of the nation’s electrical infrastructure upgrade to provide redundancy and zero downtime. According to our findings, installing a 69 kV ring is a crucial step in electrifying NSCS and aligning electrical network innovations with urban planning. The system’s capacity to adjust and optimize power distribution would be strengthened provided the algorithms were given the freedom to react dynamically to changes or disruptions brought about by distributed generation sources. Full article

Climate adaptation in urban environments is often constrained by rigid institutional rules and fragmented governance, which limit inclusive and context-specific planning of public spaces such as schoolyards. This study addresses this challenge by examining how collaborative planning can transform schoolyards, from asphalt-dominated, monofunctional spaces into green, climate-resilient community assets. The research employed the Institutional Analysis and Development framework within a qualitative case study design. Two public schools in the San Cristóbal de los Ángeles neighbourhood of Madrid served as case studies, with data collected through document analysis, participant observation, and interviews with municipal officials, urban planners, educators, and community members. Results indicate that the collaborative planning process reshaped rules in use, expanded the network of actors, and transformed decision-making processes. Existing rules were flexibly reinterpreted to allow new uses of space. Children, teachers, and residents became co-producers of the public space, expanding the governance network, where new deliberative practices emerged that improved coordination across people and organisations. These institutional changes occurred without formal regulatory reform, but with the reinterpretation of the game’s rules by each organisation. Thus, schoolyards can serve as laboratories for institutional innovation and participatory climate adaptation, demonstrating how urban experiments have the potential to catalyse not only physical transformations but also transformations in urban management. Full article

The remanufacturing of end-of-life products is an effective approach to alleviating resource shortages, environmental pollution, and global warming. As the initial step in the remanufacturing process, the quality and efficiency of disassembly have a decisive impact on the entire workflow. However, the complexity of product structures poses numerous challenges to practical disassembly operations. These challenges include not only conventional precedence constraints among disassembly tasks but also sequential dependencies, where interference between tasks due to their execution order can prolong operation times and complicate the formulation of disassembly plans. Additionally, the inherent uncertainties in the disassembly process further affect the practical applicability of disassembly plans. Therefore, developing reliable disassembly plans must fully consider both sequential dependencies and uncertainties. To this end, this paper employs a chance-constrained programming model to characterise uncertain information and constructs a multi-objective sequence-dependent disassembly line balancing (MO-SDDLB) problem model under uncertain environments. The model aims to minimise the hazard index, workstation time variance, and energy consumption, achieving a multi-dimensional optimisation of the disassembly process. To efficiently solve this problem, this paper designs an innovative multi-objective adaptive large neighbourhood search (MO-ALNS) algorithm. The algorithm integrates three destruction and repair operators, combined with simulated annealing, roulette wheel selection, and local search strategies, significantly enhancing solution efficiency and quality. Practical disassembly experiments on a lithium-ion battery validate the effectiveness of the proposed model and algorithm. Moreover, the proposed MO-ALNS demonstrated a superior performance compared to other state-of-the-art methods. On average, against the best competitor results, MO-ALNS improved the number of Pareto solutions (NPS) by approximately 21%, reduced the inverted generational distance (IGD) by about 21%, and increased the hypervolume (HV) by nearly 8%. Furthermore, MO-ALNS exhibited a superior stability, providing a practical and feasible solution for disassembly optimisation. Full article

Since the 1960s, Iran’s major cities have experienced significant migration from the country’s rural areas and from other nations. Although many urban planning and design concepts can be traced back to Iran, the country’s planning machinery has failed to effectively regulate urban growth, notably in the city peripheries, where land use has changed radically as semi-rural areas have been developed in a haphazard fashion with scant adherence to existing plans and planning regulations. Farahzad is one such area in the urban periphery of Tehran, where a range of sub-standard dwellings have been built, and urban services are deficient in many regards. This article examines how the urban landscape has evolved, how the resident population has grown, and the nature of the social and economic issues that persist today. The research method combines an analysis of the extant literature and local authority documentation, images developed from GIS data, and first-hand interviews with local practitioners to explore the growth of the neighbourhood in recent decades and assess the current problems confronting both residents and local authorities. The novelty of this article lies in the use of GIS-generated images and urban fabric classifications to assess the growth of the neighbourhood since the turn of century, during which time the planning machinery has generally failed to provide an adequate framework for development in this area of the Tehran urban periphery. Indeed, findings suggest that land use zoning has played little part in guiding or controlling urban development in Farahzad, and that identifying urban fabrics may prove a useful way of assessing socio-economic and physical development needs in such circumstances. This article makes a small contribution to our understanding of the change dynamics in a peripheral neighbourhood of a major city in the developing world. Full article

Rapid urbanisation in Sub-Saharan Africa demands innovative land management strategies that promote sustainable, inclusive, and resilient urban development. This study investigates the potential of land readjustment (LR) to foster neighbourhood-scale social–ecological urban resilience (SEUR) through a case study of the Nunga LR project in Kigali, Rwanda. Grounded in the social–ecological system (SES) theory and operationalised through the social–ecological land readjustment model for resilient neighbourhoods, the research evaluates LR practices against an integrated benchmark framework combining LR aspects, neighbourhood design standards, and resilience attributes. The study uses secondary data, project shapefiles, and key informant interviews to assess how Rwanda’s emerging LR model contributes to resilient neighbourhood development. Findings demonstrate strong community mobilisation and adaptive governance capacity. However, critical resilience dimensions—including modularity, green infrastructure integration, land-use diversity, and adaptive feedback mechanisms—were only partially operationalised. Consequently, while LR improved spatial formalisation and basic infrastructure provision, it fell short of creating a truly resilient, multifunctional neighbourhood ecosystem. These findings highlight the need to reframe LR from a purely technical land management tool into a systemic resilience-building mechanism. Policy recommendations include mandating green/blue infrastructure in LR plans, establishing innovative financing mechanisms, institutionalising adaptive monitoring, strengthening affordability safeguards, and promoting multifunctional spatial layouts. The study contributes to urban resilience and land governance scholarship by offering a context-sensitive, empirically tested model for integrating SEUR principles into LR practice in rapidly urbanising African cities. Future research should pursue longitudinal analyses and dynamics modelling of land readjustment impacts to deepen understanding of urban resilience pathways in the Global South. Full article

This study investigates the relationship between neighbourhood walkability, recreational walking, and physical activity and well-being outcomes in Bangkok, Thailand. A cross-sectional survey was conducted with 881 residents from 50 districts in Bangkok. The Neighbourhood Environment Walkability Scale-Abbreviated (NEWS-A) was employed to assess neighbourhood walkability and its association with recreational walking behaviour. The Global Physical Activity Questionnaire (GPAQ) and WHO-5 Well-Being Index were used to explore the links between recreational walking, physical activity, and well-being. The findings reveal that neighbourhood environment characteristics significantly influence recreational walking behaviour, with high-rise and planned neighbourhoods showing higher odds of recreational walking compared to unplanned neighbourhoods. Additionally, recreational walking was positively associated with both achieving sufficient physical activity and better well-being scores. These findings suggest that neighbourhood-level interventions aimed at promoting recreational walking could be effective strategies for encouraging physical activity and enhancing well-being in urban residents. The study recommends that targeted, neighbourhood-level interventions focused on creating supportive walking environments may be more effective in promoting health outcomes compared to broader city-wide urban design strategies. Our results also provide evidence-based support for shifting from tourism-centric to neighbourhood-focused walking infrastructure development in Bangkok. Full article

As Canada’s population ages and disability prevalence increases, understanding the built environment’s impact on mobility and social participation is essential. This study evaluates the measurement properties of the Stakeholders’ Walkability/Wheelability Audit in Neighbourhoods (SWAN) tool, a user-led instrument designed to assess environmental factors affecting older adults and individuals with disabilities. Using community-based participatory research, we recruited 54 participants from five cities to assess the SWAN tool’s inter-rater reliability, construct validity, and internal consistency. The results indicated a high overall inter-rater reliability of 85.22%, with substantial Cohen’s Kappa coefficients across domains, particularly in the Safety domain (0.73). The construct validity was confirmed through moderate to strong correlations with established measures, notably a correlation of 0.79 between the Street Crossing subdomain and the Sidewalk Index. The internal consistency analysis showed excellent reliability in the Functionality domain (α = 0.95) and a lower consistency value in the Social Environment domain (α = 0.63), suggesting the need for further refinement. These findings provide preliminary evidence of the SWAN tool’s potential for evaluating neighbourhood accessibility. By identifying barriers and facilitators to mobility, the SWAN tool can guide urban planning efforts aimed at creating inclusive environments for aging populations and individuals with disabilities. Future research should focus on larger samples to explore structural validity. Ultimately, the SWAN tool can contribute to improving the quality of life of vulnerable populations and promote more equitable urban policy development. Full article

Domestic workers represent an essential yet invisible workforce within urban economies, especially in developing countries. Predominantly women in low-income, single-headed households, they often work informally and rely on buses or minibus taxis for suburb-to-suburb travel. Despite their contributions, their transport needs are overlooked in traditional planning, which prioritises CBD-centric routes over the suburb-to-suburb journeys that define their invisible commute. The purpose of this study is to examine the transport mobility patterns of live-out domestic workers in urban areas, focusing on Centurion, one of the affluent neighbourhoods in the Metropolitan City of Tshwane, South Africa. To assess the transport challenges faced by domestic workers during their commutes, a Likert scale was utilised. The data were analysed using descriptive statistics facilitated by the SPSS software package to identify key trends and patterns in the responses. The key challenges of domestic workers are high transport costs, lack of access to affordable transport modes like rail and long commute times. Minibus taxi is the most commonly used mode accommodating both standard and non-standard working hours. The study also found that most of the domestic workers working in Centurion are migrant workers. To reduce the need to travel to work, mixed-income developments, and inclusionary housing are some of the concepts that can be adopted in affluent suburbs like Centurion. These two concepts not only address the need to travel to work but also spatial inequality and promotion of social integration whereby affordable housing are created within higher income areas. Full article

Gated communities have been widely examined as a contemporary urban phenomenon, yet their emergence in the Middle East reflects broader socioeconomic and cultural transformations rather than a direct continuation of historical spatial practices. Historically, Arabian cities featured compact, human-scaled urban layouts with walled perimeters, narrow streets, and shared courtyards, fostering social cohesion, security, and communal interaction. These spatial characteristics evolved organically, balancing privacy with integration to meet communal needs. This article examines the historical evolution of enclosed neighbourhoods in Arabian cities and their sociospatial connections to modern gated communities, assessing their impact on urban sustainability. By employing historical inquiry, this study investigates how traditional principles, such as privacy, community resilience, and spatial hierarchy, have been inherited, reinterpreted, or redefined in contemporary developments. Findings indicate that historical Arabian cities reinforced internal cohesion and self-governance, whereas modern gated communities introduce deliberate spatial and social segregation, disrupting urban connectivity and weakening social sustainability. The study highlights critical implications for urban planning, suggesting that integrating historical spatial principles can create inclusive and adaptable contemporary developments. Full article

The targets for reducing greenhouse gas emissions, combined with increased electrification and the increased use of intermittent renewable energy sources, create significant challenges in matching supply and demand within distribution grid constraints. Demand response (DR) can shift electricity demand to align with constraints, reducing peak loads and increasing the utilisation of renewable generation. In countries like Aotearoa (New Zealand), peak loads are driven primarily by the residential sector, which is a prime candidate for DR. However, traditional deterministic and stochastic models do not account for the important variability in behavioural-driven residential demand and thus cannot be used to design or optimise DR. This paper presents a behavioural agent-based model (ABM) of residential electricity demand, which is validated using real electricity demand data from residential distribution transformers owned by Powerco, an electricity distributor in Aotearoa (New Zealand). The model accurately predicts demand in three neighbourhoods and matches the changes caused by seasonal variation, as well as the effects of COVID-19 lockdowns. The Pearson correlation coefficients between the median modelled and real demand are above 0.8 in 83% of cases, and the total median energy use variation is typically within 1–4%. Thus, this model provides a robust platform for network planning, scenario analysis, and DR program design or optimisation. Full article

The health of different countries evolves in parallel with their economic development. Communicable diseases play a more prominent role in low-income countries compared with high-income countries, while non-communicable diseases (NCDs) have become dominant in developing and developed economies. This transition has been accompanied by public health efforts to prevent NCDs, resulting in improvements in total life expectancy at birth (TLE). It is recognized that health determinants are not confined to healthcare systems, but that social determinants play a key role in health inequalities. The rapid increase in life expectancy at birth has led to increasing numbers of older adults, where health inequalities are accentuated. The current UN Decade of Healthy Aging calls for a life-course approach to building intrinsic capacity, maintaining function, and avoiding dependency with age instead of avoiding mortality and morbidity. TLE in Hong Kong is one of the highest in the world as a result of public health preventive efforts and an essentially free hospital system. However, the increase in TLE has not been accompanied by the same magnitude of increase in health span, resulting in an increasing dependency burden. Geography, culture, dietary and smoking habits, physical activity, urban planning, and neighbourhood cohesion are some of the social determinants affecting TLE and also health inequalities. With population ageing, it would be appropriate to focus on the social determinants affecting health span to maintain functional independence rather than prolonging life. A whole-of-society response instead of relying solely on the adaptation of health and social care systems would be needed, together with more nuanced metrics to measure health span. Full article

This paper addresses the need to decarbonize built environments by altering community planning and home design. By employing principles of Circular Economy at the community and dwelling levels, the paper argues that having flexible design strategies can contribute to the reduction of the carbon footprint of urban areas by minimizing the need for demolition and, as a result, material waste. Currently, depending on location and cultural and economic conditions, large-scale developments might take many years to approve and construct. Moreover, when changes are to be introduced to an initially approved masterplan, the process of obtaining municipal planning approval can be lengthy. By using a case study-based methodology for community and home design, this research argues that, given the rapidly emerging new social challenges, neighbourhoods can be designed to adapt and accommodate changes they may encounter throughout their development and in subsequent years. The proposed approval procedure that this research introduces provides a step-by-step approach to planning that can be readily adjusted based on market demand and newly developing economic and social conditions. To demonstrate his research in partnership with a private developer and the municipality, the author utilized these techniques in the design of a community in La Prairie, a town near Montreal, in Quebec, Canada. The paper also introduces the concepts of adaptability and circularity at the dwelling unit level to minimize demolition and waste. The energy efficient design incorporates demountable partitions and specialized conduits for the installation and improvement of utility lines. By investigating the macro and micro levels, the author concludes that changes to the current system, while considering the needs of key stakeholders, stand to reduce demolition and waste. Full article