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An aesthetic value of livable river space index methodology for examining recreational urban rivers
No full textWhile increasing various water-land use index methodologies are being offered to the issue of river management in urban fluvial areas, yet there is a relative lack of research study examining the aesthetic value of livable river space index methodology for recreational purpose in context of urban river management. This research intends to offer a comprehensive methodology related to the aesthetic value of livable river space index within the framework of the river management paradigm. Since aesthetic value is closely linked to human visual preferences, the offered method of this study is used the combination of rapid appraisal of land use types and GIS-based method that analyzing certain famous recreational river area, that is Love River, Kaoshiung City in Taiwan as study area. The final contribution of study was also attempted to provide an effective solution to identify and evaluate the problems by designing a conceptual framework of an aesthetic value of livable river space index methodology for examining recreational urban rivers
Sacred urbanism and cultural resilience: Reinterpreting Catuspatha as a regenerative livable space in Semarapura, Bali
No full textThis study explores the spatial and symbolic transformation of Catuspatha in Semarapura, Bali, and its reinterpretation through the Regenerative Livable Built Environment (RLBE) framework. Catuspatha, a sacred urban node in Balinese towns, traditionally serves as the cosmological center that aligns with local values and community activities. Through qualitative and spatial analysis, this research examines how the form, meaning, and functions of Catuspatha have changed across historical periods—from the royal-era sacred plaza to a modern urban intersection—while assessing cultural resilience amidst tourism-driven urban development. The results reveal a significant shift from spiritual and communal orientations to vehicular and economic functions, risking the loss of its original sacredness. By proposing a contextual model that integrates sacred urbanism and cultural resilience, this study emphasizes the importance of restoring spatial harmony, socio-cultural identity, and regenerative values in heritage town planning. The model serves as a strategic framework to guide urban planners, architects, and policymakers in revitalizing traditional nodes as livable and meaningful urban spaces
Exploration of artificial intelligence on building facades in the context of Indonesian regionalism
No full textThe campus facade building should reflect the local cultural and technological character as the basis for the character of a government-owned state institution such as the Sumatra Institute of Technology (ITERA) campus. The most appropriate approach is to display the context of the Indonesian regionalism approach that highlights local wealth that can be combined with new and modern concepts by utilizing artificial intelligence (AI). This study aims to take a regionalism approach to the application of the ITERA campus building facade appearance with the AI method by applying the criteria of Indonesian regionalism in the form of a combination of local materials and new technology, responsive to the local climate, in accordance with tradition, heritage, history, local areas, and can find the meaning of art and culture from the building. The final result obtained is the application of these criteria, including using a combination of local materials with the latest technology, especially the application of materials, openings, and the application of Sumatran cultural traditions through the representation of traditional buildings
Pedestrian restoration in the core area of Jakarta's Old Town: A humanist approach in revitalizing cultural heritage areas
No full textJakarta Old Town is one of Indonesia's most significant historical urban areas, preserving traces of the nation's colonial and cultural past. However, this area has faced serious challenges in maintaining the quality of its public spaces particularly pedestrian pathways, which serve as vital zones for movement and social interaction. This study aims to formulate a restoration approach for pedestrian pathways in the core area of Jakarta Old Town that goes beyond physical repair and visual aesthetics, by prioritizing human needs and comfort in the design process. Using a qualitative-descriptive method, this research is based on field observations, interviews with key stakeholders, and an analysis of archival documents. The findings reveal that many of the current pedestrian routes fail to support safe, inclusive, and pleasant walking experiences. The lack of supporting infrastructure, minimal aesthetic and shading elements, and vehicular dominance contribute to a degraded spatial experience for pedestrians. Through a humanistic lens, the study proposes restoration strategies that emphasize thermal comfort, universal accessibility, visual legibility, and integration with the area's cultural and economic functions
Experimental Validation of CFD–FEA Flow and Structural Performance Analysis in a Non-Return Multi-Door Reflux Valve
No full textThis study provides a validated numerical analysis of the hydraulic and structural performance of a non-return multi-door reflux valve, using computational fluid dynamics (CFD) and finite element analysis (FEA), and compares it with experimental tests. Under varying flow conditions, the numerical model predicts important performance parameters such as pressure drop, flow coefficient, velocity distribution, and stress concentration. The pressure difference, flow capacity, and response times of the valve were measured using a large-scale experimental setup; the results demonstrated a strong correlation with the simulation data. While the FEA method successfully captured the high-stress regions without exceeding the material yield limits, the CFD-predicted pressure drop values remained within ±5% of the experimental results. These results validate the accuracy and cost-effectiveness of numerical simulations as an alternative to extensive physical prototyping for valve design and performance evaluation. The study also highlights areas where future work, such as fluid-structure interaction modelling, is needed to more effectively capture transient dynamics
Contextual architectural study on LAND’S END PIK 2
No full textContextual architecture is an approach that takes into account not only the physical surroundings, but also the social, cultural, and environmental aspects of a place. This design philosophy is especially relevant in rapidly growing urban areas where identity and climate sensitivity are often overlooked. The objective of this study was to identify how the design of LAND'S END PIK 2, a coastal-themed lifestyle district located on the northern coastline of Jakarta and Tangerang, applies contextual architectural principles in response to its natural and social environment. The method used in this research is qualitative with a grounded theory approach, conducted through field observation and analysis of architectural composition theories. The results show that the design responds well to its context through the use of clustered layouts, fragmented building massing, and local materials. Passive design strategies such as building orientation, large openings, and cross ventilation help improve thermal comfort. In addition, the presence of public spaces like plazas and pedestrian paths promotes social interaction and enhances inclusivity in the area. The study concludes that LAND'S END PIK 2 is a successful example of contextual architecture. Its ability to harmonize form, function, and environment highlights the value of designing with awareness of place, leading to more sustainable, livable, and culturally rooted urban developments
Living between change: The impact of settlement evolution on community life and daily practice
No full textMoving to a new living situation often signifies a major life change. It requires individuals to adjust to unfamiliar environments, routines, and social interactions. Driven by ongoing urbanization, this shift results in an increasing number of immigrants living in substandard housing and a transition from rural to urban areas. To reduce illegal housing, the government has constructed flats to meet the needs of low- to middle-income residents in suitable locations. By analysing historical shifts and current urbanization patterns, this paper offers insights into the relevance of settlement changes in the context of global development and sustainability. It also examines how lifestyle adjustments, including changes in daily routines, social interactions, self-care practices, and emotional resilience, facilitate successful adaptation to new living conditions. A post-occupancy evaluation [POE] was carried out through in-depth interviews with selected residents of Kampung Susun Akuarium, Penjaringan, North Jakarta, Indonesia. The collected data helps develop strategies for the sustainable future of building occupancy. Additionally, the study examines methods for fostering community ties and maintaining independence during the transition. The study revealed that the availability, affordability, and flexibility of public spaces directly affect the adaptation, negotiation, and resilience of individuals and groups living in Kampung Susun Akuarium
A wind tunnel study of the impact of upstream obstructions on the performance of vertical axis wind turbines in low-speed wind
No full textVertical-axis wind turbines (VAWTs) are promising for urban renewable energy, but their performance in low-wind, complex-flow conditions is poorly predicted. The quantified effects of obstacle geometry, distance, and height on VAWT start speed and power output remain unknown. This study provides empirical data to close this gap and support optimised siting in marginal wind conditions. A controlled wind-tunnel experiment was performed using a commercial 5-blade drag-based VAWT. Rectangular obstacles (500 × 340 mm) at heights of 600 mm and 750 mm were placed 1, 2 and 3 m upstream. Freestream velocities of 3, 6, 9 and 11 m/s were tested. For each configuration, the electrical power output and rotational speed were measured. The power coefficient (Cp) and start speed were calculated and benchmarked against an unobstructed base case. The study found that the presence of an upstream obstacle significantly enhanced VAWT performance compared to the unobstructed base case. A 43.5% increase in peak power coefficient was achieved with the taller obstacle at 2 m. Furthermore, the turbine start speed was reduced by over 50%, from 2.5 m/s to approximately 1.1 m/s. Performance enhancement was non-monotonic, with optimal distance dependent on obstacle height (1 m for 600 mm; 2 m for 750 mm). This is attributed to a beneficial interaction with the obstacle’s wake, in which flow acceleration and turbulent structures simultaneously increase the impulse on the driving blades and reduce the resistance on the returning blades. The study concludes that siting a VAWT behind an upstream bluff body can enhance VAWT performance. These findings are limited to controlled wind tunnel conditions, as the simplified setup does not fully replicate real-world field flows
CFD modelling of convective falling films for enhanced algae cultivation: Fluid mechanics influence of mass transfer
No full textFalling film photobioreactors are able to increase the mass transfer rates per volume of liquid through the gas-liquid interface compared to other photobioreactor types. At low Reynolds numbers the flow mass transfer is still diffusion limited. This work aims to resolve and improve the convective mixing within thin falling films numerically to optimize the rates of CO2 absorption into a thin falling water film. Flat plate models are compared and it is found that slower films with a Reynolds number of 28 outperform faster flowing films by up to 2.5 times
Compounding Morphometric Parameters for watersheds Prioritization in Data-Poor Regions: Case Study of a Semi-Arid Area, Northern Morocco
No full textThis study investigates the vulnerability of the Ouerrha watershed in northern Morocco using the compound parameter method. The watershed was segmented into 40 distinct sub-watersheds, labeled SW 1 to SW 40. Geographic Information Systems (GIS) and Remote Sensing technologies were used to generate foundational data and support a thorough analysis. A variety of mathematical equations were applied to compute the parameters of the watershed. Key morphometric parameters, including relief, linearity, and shape, were integrated to assess the characteristics of the sub-watersheds. The findings reveal that SW8, SW9, SW14, and SW16 are classified as high-priority areas for immediate intervention due to their significant vulnerability to erosion and degradation. Moderate priority is assigned to sub-watersheds 4SW, 5SW, 13SW, 15SW, 17SW, 32SW, 34SW, 36SW, and 38SW. The remaining sub-watersheds (SW1, SW3, 7SW, SW18, 24SW, SW26, 27SW, 28SW, 31SW, SW37, and SW40) are categorized as low and very low priority, indicating a greater degree of stability and resilience against environmental stress, with reduced risks from runoff or erosion. This study illustrates the importance of numerical methods in identifying natural challenges and enhancing the accuracy of sub-watershed prioritization for effective management strategies