Search Results (9,950)

Mobile robot path planning in complex environments remains challenging due to obstacle constraints, high-dimensional search space, and the need to balance path optimality and safety. To address these challenges, this paper proposes an improved Red-Billed Blue Magpie Optimizer (IRBMO) with multi-strategy cooperation. Specifically, a territorial awareness mechanism enhances global exploration to avoid premature path convergence, a representative individual learning strategy improves exploitation to refine path quality, and a random subpopulation diffusion strategy helps escape local optima in complex obstacle environments. The proposed method is applied to grid-based path planning problems with different map sizes and obstacle densities. Experimental results show that IRBMO significantly reduces path length compared with other algorithms, while achieving faster convergence and better stability. Parameter sensitivity analysis, ablation study, and convergence analysis further verify the effectiveness of the proposed strategies. In addition, benchmark tests on CEC2017 and CEC2022 functions against 19 competitors further confirm its optimization capability. Overall, IRBMO provides an effective and robust solution for robot path planning problems. Full article

As rural revitalization advances, the age-friendliness of public spaces directly impacts the well-being of left-behind elderly populations. However, the spatial and social marginalization of these vulnerable groups in tourism-driven peri-urban villages remains critically underexplored. To bridge this gap, this study proposes a quantitative evaluation framework integrating space syntax and multiple linear regression to investigate the matching mechanism between physical spatial layout and elderly activity needs. Focusing on Shixia Village in Beijing, surveys and satisfaction assessments were conducted with 30 elderly residents (representing a rigorous 27.3% of the permanent population). Space syntax analysis revealed a distinct “core-periphery” spatial differentiation. Despite a moderate spatial intelligibility (0.586), the rapid decay of integration in peripheral clusters acts as the primary physical bottleneck restricting the elderly’s social radius. Furthermore, regression results indicate that public facility accessibility (β = 0.703) and residential environment quality (β = 0.779) are the core positive drivers of satisfaction (p < 0.001). Conversely, road connectivity exhibited an unexpected negative correlation (β = −0.308). This highlights a crucial “double-edged sword” effect: in traditional villages with tourism development, excessive spatial permeability diminishes the elderly’s territorial sense of security due to external traffic interference. Finally, targeted optimization strategies—including traffic-calming interventions and hierarchical node layouts—are proposed, providing an operational evaluation model and design reference for age-friendly environmental construction in similar peri-urban villages. Full article

Background and Purpose: Complete angiographic reperfusion (TICI 3) is considered the optimal procedural endpoint of mechanical thrombectomy (MT) in acute ischemic stroke. However, new diffusion-weighted imaging (DWI) lesions are frequently observed despite apparent angiographic success. We aimed to investigate the incidence, morphological patterns, and clinical relevance of these lesions in a strictly defined TICI 3 cohort. Methods: In this retrospective single-center study, 89 patients with anterior circulation large-vessel occlusion (LVO) who achieved true TICI 3 were analyzed. Baseline and follow-up Magnetic Resonance Imaging (MRI) within 48 h were systematically compared using paired diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) maps to identify new lesions. Lesions were classified according to morphology and distribution. Stroke etiology was assessed using TOAST criteria. Functional outcomes were evaluated using the 90-day modified Rankin Scale (mRS) with the Rankin Focused Assessment. Results: New DWI lesions were detected in 28 of 89 patients (31.5%). The predominant pattern was millimetric cortical foci (85.7%), most frequently ipsilateral to the recanalized vessel (78.6%), with fewer contralateral (14.3%) and bilateral (7.1%) lesions. Territorial infarcts and isolated basal ganglia infarcts were each identified in 14.3% of patients, with some overlap between categories. No significant differences were observed between patients with and without new lesions regarding baseline characteristics or procedural metrics (all p > 0.05). Importantly, the presence of new DWI lesions was not associated with 90-day functional outcome (p = 0.930) or survival (p = 0.613). Conclusions: New DWI lesions are common even after complete angiographic reperfusion, highlighting a persistent dissociation between macrovascular success and tissue-level integrity. Although predominantly small and clinically silent in the short term, these findings underscore the limitations of angiographic endpoints alone and support the need for strategies targeting microvascular protection and prevention of distal embolization. Full article

The tourism industry is a wide and holistic industry, the value of which cannot be overestimated: it plays a key role in promoting inter-cultural understanding and socio-cultural development. Sri Lanka is a renowned tourism destination that offers many diverse tourism products. However, the tourism industry has been continuously and severely disturbed by prolonged civil war. After the war, tourist arrivals in Sri Lanka, particularly to war zones and war memorial sites, rapidly grew. The main objective of this study is to explore dark tourism development in the Northern Province (NP), Sri Lanka. Employing a qualitative methodological approach, this study is underpinned by an interpretive research philosophy. Research data were collected through field-based interviews. For in-depth interviews, sixteen interviewees from different stakeholder groups were selected, using a purposive sampling technique. The research results reveal that twenty-seven dark tourism destinations in the northern territory face various challenges in being developed as sustainable dark tourism destinations. Furthermore, this study indicates that the Sri Lankan Army was aggressively involved in the revitalization of the tourism industry in the northern territory. This research recommends the following moves intended to promote dark tourism development in the NP. First and foremost, when developing dark tourism in the NP, the active participation of locals should be accommodated. Second, rituals must be taken into account as a key mechanism for impressing upon tourists the richness and historical value of dark sites. When developing dark tourism packages, death-related rituals ought to be considered. If so, travelers can experience amazing intangible heritage associated with death. Full article

Crime forecasting in heterogeneous urban contexts remains challenging due to the combined effects of territorial heterogeneity and complex temporal dynamics. However, a large portion of the existing literature tends to address territorial segmentation and predictive modeling separately, or to combine them within unified workflows that may obscure their distinct analytical roles. This study presents a modular spatial–temporal analytical approach that treats territorial segmentation and short-term crime prediction as complementary but methodologically independent components. Unsupervised segmentation captures territorial heterogeneity, while a supervised ensemble model estimates short-term crime occurrence. A chronological expanding-window validation scheme is implemented, reserving the most recent period as a blind test set to prevent temporal leakage. Across municipalities, recall values in 2022 range from 0.36 to 0.77, with corresponding F1-scores ranging from 0.174 to 0.696, while blind-test recall ranges from 0.184 to 0.856, with F1-scores ranging from 0.000 to 0.784, and AUC values up to 0.88, indicating that predictive performance is context-dependent rather than uniform. The proposed approach provides a replicable and context-aware analytical approach for spatially differentiated crime risk estimation under strict forward-looking evaluation. Full article

The study analyzes flood susceptibility in the Banat Hydrographic Area (Romania) using an integrated GIS framework based on MCDA–AHP multicriteria analysis and the multitemporal evaluation of static and dynamic factors for two scenarios (2005 and 2023). The results highlight differences between the two scenarios, mainly driven by variations in precipitation: although the moderate class remains dominant (~56% of the area), the share of high and very high susceptibility classes is lower in 2023 (~6%) compared to 2005 (~17%), accompanied by an expansion of the low susceptibility class (~26% to ~37%). Validation using flood extent data from April 2005 shows that approximately 99% of the affected area falls within the moderate, high, and very high susceptibility classes (χ² = 9475, p < 0.001). The multitemporal analysis indicates high stability (75% of the territory), while 25.35% exhibits transitions toward lower susceptibility classes. Dynamic factors show differentiated roles: precipitation exerts a dominant regional control (95.44% of the area), while LULC changes contribute locally. The differences between scenarios should be interpreted as a model response to climatic variability rather than as structural changes in intrinsic susceptibility. The approach provides a reproducible framework for susceptibility assessment and supports spatial planning and risk management. Full article

Small settlements in Serbia are confronted with long-term processes of depopulation, ageing, and migration, characterised by pronounced spatial and structural heterogeneity. This raises questions about the effectiveness of uniform development policies and underscores the need for a differentiated, place-based approach. The aim of this paper is to identify the demographic heterogeneity of small settlements (with fewer than 100 inhabitants) and to analyse its implications for decentralised territorial development. The research is based on the analysis of 1302 settlements in Serbia, using 26 demographic, socio-economic, and geographical indicators. The methodological framework is based on principal component analysis and cluster analysis, complemented by nonparametric tests and logistic regression. The results indicate pronounced population ageing, low labour potential, and a clear spatial polarisation between accessible and peripheral settlements. Four clearly differentiated types of small settlements are identified. It is concluded that demographic heterogeneity represents a key determinant of development capacity, indicating the need for territorially sensitive and differentiated development policies. In this context, decentralisation and tailored development models may contribute to the revitalisation and long-term sustainability of rural areas. Full article

Greening, as a concept, is becoming an essential component of contemporary urban planning worldwide, and universities have begun adopting green policies. While there are numerous studies on climate change, green infrastructure, ecology, and sustainability in planning practice, limited scientific research explores how these concepts are embedded within the educational landscape. This paper aims to develop a methodological framework for mapping the “educational greenscape” by evaluating three levels of higher education in a top-down manner: (01) university, (02) faculty, and (03) subject. The research methodology relies on: an extensive literature review and content analysis; a multi-level case study of the University of Belgrade, focusing on an expert survey based on the European University Association framework; curriculum content evaluation at the Faculty of Architecture, using predefined keywords; and the identification of green interventions and their implementation within the subject “Sustainable Territorial Development,” at the Faculty of Architecture. The specific findings indicate that green activities at the institutional level lack resources, communication, and governance. At the faculty level, there is an apparent need for a more even distribution of green urban planning approaches across different faculty courses. However, subject-level assessment showed the successful implementation of the green urban planning concept into teaching and learning methodologies, with it showing transformative potential and providing a universally applicable methodological framework for mapping the educational greenscape. Full article

In a context marked by the Anthropocene, the climate crisis, and the contemporary blockage of political and projective imagination, utopias and dystopias re-emerge as fundamental critical instruments for architecture. Far from constituting evasive or unrealizable exercises, these constructions operate as epistemological and projective devices capable of exploring possible futures, revealing latent tensions, and questioning the ideological frameworks that shape the built environment. This article examines speculative design as a contemporary updating of the utopian and dystopian tradition in architecture, understood not as a normative model but as a critical method for imagining radical transformations of dwelling in response to the current ecological, social, and geopolitical urgencies. Drawing on a series of projects developed within the university context, it analyses how architectural speculation, enhanced by artificial intelligence tools, enables the exploration of alternative scenarios of urbanization, adaptive habitats, and new relationships between architecture, territory, and nature. The cases analysed show that the combination of utopia, dystopia, and emerging technologies fosters an understanding of architecture as an open, dynamic, and relational system capable of responding to contexts of high uncertainty. The article argues that the return of utopian imagination, now mediated by speculative practices and digital tools, constitutes a relevant contribution to the contemporary debate on new forms of urbanization, flexible megastructures, and sustainable architectural futures. Full article

The synergistic and mutually reinforcing relationship between the development of the new energy industry and comprehensive land consolidation is crucial for integrating ecologically fragile areas into the national “dual carbon” goals and supporting regional high-quality development. Based on a systematic literature review, field investigations in typical regions, and multi-case comparative analysis, this paper analyzes the challenges and opportunities for the new energy industry in ecologically fragile areas as well as the mutually reinforcing mechanisms between new energy industry development and land consolidation. On this basis, it explores pathways for comprehensive land consolidation in coordination with new energy development. Building on local practices, it further identifies five typical models. The results show the following: (1) The development of the new energy industry in ecologically fragile areas faces multiple challenges, including a fragile ecological environment, inadequate infrastructure, a mismatch between resource supply and demand, and land use conflicts. Against the backdrop of the energy transition, breakthroughs in key technologies, and the guidance of territorial spatial planning, the value of wind and solar resources in these areas are becoming increasingly prominent, offering broad prospects for the new energy industry. (2) The development of the new energy industry and comprehensive land consolidation in ecologically fragile areas are mutually reinforcing. Factors such as resource endowment, ecological constraints, new quality productive forces, and investment and financing mechanisms interact and integrate with each other, resulting in diversified synergistic pathways. (3) Based on the priorities of new energy industry development and the primary objectives of consolidation, five models are identified: Ecological Restoration-led Model, Resource Development-led Model, Industrial Collaboration-led Model, Technological Innovation-led Model and Integrated Development Model. Each model has distinct priorities and applicable scenarios. This study will provide a reference for new energy development and sustainable development in ecologically fragile areas, including desertified and Gobi desert areas, coal mining subsidence areas, and areas rich in wind, solar, and hydropower resources. Full article

Mining plays a central role in global development, but its benefits are often accompanied by significant social, economic, environmental, territorial, and health-related impacts on affected communities. This study aimed to identify, organize, and synthesize the main impacts of mining on communities through a systematic literature review conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA 2020) guidelines. The search was carried out in the Coordination for the Improvement of Higher Education Personnel (CAPES) Journal Portal, covering the period from 2009 to 2024, and resulted in 57 eligible empirical studies. Data were extracted, organized, and synthesized through thematic analysis and structured binary coding of impact indicators. The results showed that mining impacts are widely distributed across multiple dimensions, with economic (98.25%), environmental (92.98%), and social (91.23%) impacts being the most recurrent, followed by territorial/cultural and mental health dimensions (85.96%). Indicators such as economic dependence, loss of livelihoods, conflicts, and contamination were particularly frequent. In contrast, post-closure vulnerability received comparatively limited attention in the literature. These findings suggest the multidimensional and systemic nature of mining impacts and highlight the need for more integrated and long-term approaches, especially those addressing the post-operational period and progressive mine closure. Full article

Anticipating the socio-environmental impacts of spatial planning strategies is a prerequisite for sustainable development pathways. Land change models are increasingly employed to evaluate the impacts of spatial planning on land use and land cover, and their subsequent effects on ecosystem services and environmental resources. Nevertheless, modelling land use and land cover changes, and their interactions, at a fine scale to preserve future landscape patterns has been identified as a key challenge in the land change science community. This paper presents an innovative process-based model—the FORecasting landscapE SCEnarios Model (FORESCEM)—designed to spatially simulate fine-scale future land use and land cover changes (LUCC) based on narratives developed through participatory or expert-driven approaches. By clearly distinguishing land covers and land uses as two different but related inputs, its conception and architecture enable the assessment of interactions among LUCC within human-managed landscapes. It relies on conventional functions and properties of LUCC models, and aims at completing the existing land change models. Applied on a French case study, the validation results demonstrate the model’s capability to replicate LUCC dynamics, effectively simulating trend-based and trend-breaking LUCC trajectories under contrasting scenarios. More broadly, this paper questions and discusses the validation of land change models used for simulating future LUCC. Full article

Agricultural expansion in frontier regions is reshaping land-tenure arrangements and accelerating native vegetation loss, posing significant challenges to territorial governance. MATOPIBA, Brazil, epitomizes this dynamic, concentrating long-standing tensions between agribusiness expansion and environmental conservation in the Cerrado biome. This study examines how the Rural Environmental Registry (CAR) reflects these pressures by analyzing property records from 2019 and 2025, mapping overlaps with public lands, and quantifying vegetation change between 1985 and 2024 to evaluate CAR’s potential as a territorial governance instrument. We integrated public datasets, applying geometry validation and cadastral hierarchization procedures. Between 2019 and 2025, registered properties nearly doubled, rising from 7734 to 14,231. Overlaps with protected and public lands were identified, and native vegetation declined by 38.12% over the study period, with losses recorded in approximately 75% of the properties analyzed. These findings indicate that CAR holds significant potential for territorial and environmental governance, but its effectiveness depends on continuous data validation, institutional integration, and strengthened conservation policies. Full article

Etruscan studies have reached great heights in the accumulation of cultural data. This is particularly true for landscape studies: the second half of the 20th century has been fruitful as it saw a growth in survey projects exploring ancient central Italian landscapes. Survey data indeed have a lot of potential for the study of urbanisation, facilitating the quantification of different patterns to draw comparisons of control strategies enacted by different power places. This paper is a synthesis of the analyses on rural settlement data between the 7th and the 5th centuries BCE, when urbanised institutions and lifestyles consolidated. Four case studies are selected and discussed, representing different types of territorial control: Tuscania, a mid-ranking centre tied to the city of Tarquinia; Chiusi and Cerveteri, both urban central places, with different developments and ways to administer territories; and finally, the palatial site of Murlo, in open conflict with urbanised realities. Site trends, proxies of population change and locational analysis, using GIS, reveal different rural infrastructures sustaining Etruscan central places. These centres adopted different strategies to control their lands and benefit from them. As part of the approach, I will show how structured Etruscan landscapes became, how they were exploited, who lived there, and how relationships with the central place were developed. Full article

Socio-environmental conflicts in mining regions are often examined through political, economic, or social lenses, while the role of land-system transformation remains less integrated into quantitative analysis. This study examines the co-evolution of socio-environmental conflict and territorial change in Las Bambas (Apurímac, Peru) as a socio-territorial process. Annual conflict records from the Peruvian Ombudsman’s Office (2007–2024) were combined with annual land-cover data from MapBiomas. Yearly conflict influence zones were reconstructed from reported affected communities and geographic features using buffered spatial entities and concave hull polygons. Clustering methods (K-medoids, DBSCAN, and agglomerative hierarchical clustering) and FP-Growth association rule mining were applied to 23 unique conflicts consolidated from the original records and encoded with 10 root causes. The most intense conflict phases were accompanied by measurable landscape transformations, including the emergence of mining-related land cover from 2012 onward, sustained loss of high-Andean natural vegetation, expansion of agricultural mosaics, urban growth along the Apurímac–Cusco corridor, and hydrological alterations in wetlands and headwaters. Three conflict typologies were identified, with unfulfilled company commitments emerging as the most recurrent co-occurring grievance. The dynamic polygon approach offers a replicable framework for linking conflict records with land-system change in extractive regions. Full article