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筛选条件 : 建筑与城市规划学院
Yuankang Fan; Qiming Fu; Jianping Chen; Yunzhe Wang; You Lu; Ke Liu
Applied Thermal Engineering, 2025 260 - EI SCIE

摘要 : In commercial buildings, implementing precooling measures before office hours in summer can effectively meet the thermal comfort needs of employees. However, in multi-zone environments, differences in the cooling rates between regions often exacerbate the heat transfer interference between zones, increasing the complexity of the precooling system and leading to energy waste with limited cooling capacity. To overcome these challenges, we have developed a novel multi-zone precooling control method, which integrates deep reinforcement learning (DRL) to optimize the heat transfer process by adjusting the Air Handling Units (AHUs) valve openings, thus achieving uniform precooling across the building. Comparisons with traditional precooling control methods demonstrate the effectiveness of the proposed method. The results show that, under conventional conditions, compared with the rule-based control (RBC) and proportional integral derivative (PID) methods, the precooling time is reduced by 11.4% and 5.8%, respectively, the complexity of heat transfer is reduced by 77.6% and 64.1%, and energy consumption is reduced by 14.5% and 9.3%. In addition, the study analyzes the influence of environmental parameters on precooling optimization. The findings indicate that weather conditions have the most substantial impact on short-term precooling performance, followed by building thermal performance and cooling conditions.

Longzhu Xiao; Jixiang Liu; Shanshan Wu
Research in Transportation Business and Management, 2025 58 - SSCI

摘要 : With the changes in people's spatial cognitions, preferences and behavior patterns as a response to the COVID-19 pandemic crisis, the way transit-oriented development (TOD) boosts economic vitality has enormously altered. Hence, this study employs machine learning methods to explore the effects of TOD on economic vitality under COVID-19 and recalibrate existing TOD planning models and design principles. Based on multi-source data of Hong Kong, it measures economic vitality of MTR station areas with life service reviews and depicts built environment therein from three dimensions including node, tie, and place. It discovers that (1) the outbreak of COVID-19 impaired the economic vitality effects of TOD' (2) the global relative importance of MTR station centrality and ground space index declined during the outbreak and bounced back afterwards, meanwhile, that of street centrality, street betweenness, street detour ratio, and green space coverage increased and that of bus density, MTR station betweenness, and average building height decreased' (3) the economic vitality effects of TOD were nonlinear, and the threshold values and effective ranges of built environment variables remained constant across the time' (4) the economic vitality effects of TOD were moderated by the pandemic. This study enlightens urban policymakers and practitioners with nuanced criteria for pandemic-adaptive TOD planning and design strategies.

Jiahao He; Qiming Fu; You Lu; Yunzhe Wang; Hongjie Wu; Jianping Chen
Journal of Building Engineering, 2024 98 - EI SCIE

摘要 : In order to regulate the load peak of households and achieve energy conservation, this study proposes a household energy management system (HEMS). The proposed HEMS embeds the Self-attention mechanism in the LSTM network to predict the load demand accurately for the next time step. Based on the prediction information, the HEMS optimize the control of household energy storage devices by deep reinforcement learning (DRL) in real time. According to the experimental results during two testing periods, the HEMS reduces peak load by 19.85 % and 26.38 %, and reduces energy consuming by 26.28 % and 22.08 %, outperforming other predictive control frameworks. Additionally, it achieves 31.9 % reduction in electricity costs. It can be seen that the optimal control of energy storage devices by the proposed HEMS through the predictive control framework is effective for achieving household load regulation and energy conservation.

Chang Li; Shutong Ge; Yiping Jiang; Chang Li; Shutong Ge; Yiping Jiang
Journal of environmental psychology, 2024 99 - SSCI

摘要 : Although natural light is essential for human health and well-being, the potential effects of different brightness levels of light on the visual perception of forests have not been discussed. Using controlled eye-tracking experiments, this study explored the impact of seven simulated natural brightness levels, from the darkest to the brightest, on the visual perception of 118 participants in a virtual reality (VR) forest environment. One of the most significant findings of this study was the marginal effect of natural light brightness levels on visual physiological stress in VR forests, with the pupillary unrest index decreasing significantly with the increase of natural light brightness; Secondly, the study analyzed the influence of natural light brightness levels in VR forests on the visual engagement behavior of eye tracking, that is, bright forest environments showed an overall trend associated with longer fixation duration, less saccade duration, and greater fixation direction ratio; Thirdly, in terms of visual perception evaluation, the study found an inverted U-shaped trend of mood, restorative perception, perceived safety, and natural light brightness level in VR forests. In addition, the study also found a significant correlation between visual physiological and psychological indicators in VR forest natural light visual perception experiments. These findings help us understand the visual perception effect of forest nature light exposure as a whole, and provided important clues and a basis for future research on improving the visual comfort of forest natural light.

Nan Yang; Jinliu Chen; Liang Ban; Pengcheng Li; Haoqi Wang
Sustainability, 2024 16 (21) - SCIE SSCI

摘要 : The renovation and revitalization of vernacular architecture are pivotal in sustainable rural development. In regions like Shangri-La, traditional structures not only safeguard cultural heritage but also provide a foundation for enhancing local communities' living conditions. However, these villages face growing challenges, including infrastructure decay, cultural erosion, and inadequate adaptation to modern living standards. Addressing these issues requires innovative research approaches that combine heritage preservation with the integration of contemporary functionality. This study employs a research-by-design approach, focusing on the Shanpian House as a case study, to explore how pre-planning and post-evaluation methods can revitalize traditional vernacular architecture. The pre-planning phase utilizes field surveys and archival research to assess spatial, cultural, and environmental conditions, framing a design strategy informed by field theory. In doing so, it evaluates how traditional architectural elements can be preserved while introducing modern construction techniques that meet current living standards. The post-evaluation phase, conducted through questionnaires and semi-structured interviews, assesses user satisfaction, focusing on the impact of architectural esthetics, structural stability, and material choices. Key findings from an OLS regression highlight the strong positive correlation between architectural style, structural choices, and cultural relevance with resident satisfaction. The research emphasizes that design elements such as structural details, materials, and infrastructure upgrades are critical in shaping perceptions of both functionality and cultural identity. Interestingly, the model reveals that improving architectural esthetics, alongside modern indoor features such as network connectivity, has a significant impact on enhancing overall resident satisfaction (significance level: 0.181). This study contributes to the broader discourse on sustainable building renovation by demonstrating how traditional architecture can be thoughtfully adapted for contemporary use and also proposes a paradigm shift in the renovation of historic buildings, advocating for a balance between preservation and modernization. The application of sustainable materials, digital modeling, and innovative construction techniques further ensures that these traditional structures meet the demands of modern civilization while maintaining their cultural integrity.

DING Jin-hua; WANG Da-qing; QIAN Jing
Changjiang Liuyu Ziyuan Yu Huanjing/Resources and Environment in the Yangtze Valley, 2024 33 (9)

摘要 : With the rapid urbanization and frequent artificial construction activities, the water network area in southern Jiangsu Province is facing a series of ecological and environmental problems, and ecological risks are becoming increasingly prominent. Constructing an ecological security pattern based on landscape ecological risk assessment is a powerful way to enhance the stability of the regional ecological environment. In this study, we took the Baixian Lake area of Suzhou as an example, and we adopted the landscape pattern index to construct a landscape ecological risk assessment model. The spatiotemporal differentiation characteristics of landscape ecological risks were analyzed in the study area from 2010 to 2020. We simulated the land use pattern under urban expansion scenarios based on the CA-Markov model, and predicted the spatial distribution of landscape ecological risks. On this basis, we explored the construction of ecological security pattern under the spatiotemporal dynamic evolution. The results indicated that: (1) The land use pattern changed significantly from 2010 to 2020. The area of construction land increased by 59.32 km2, while the area of farmland and water area decreased by 17.98km and 53.61km, respectively. The area of forest land and grassland slightly increased by 12.27 km. The urban expansion scenario simulation indicated that the construction land would extend the most by 2030, with an increase of 134.14 km. The area of farmland and water area would decrease by 174.06km and 6.76km respectively. The total area of forest land and grassland would increase by 46.68km2. (2) From 2010 to 2020, the landscape ecological risk continued to increase. The proportion of medium risk and high risk areas increased by 6.55% in total, while the low and medium-low risk areas decreased by 4.62% and 1.92% respectively. The simulation of urban expansion in 2030 indicated that the proportion of medium-high ecological risk areas would increase by 10.12%, while the medium-low and low risk areas would decrease by 19.14%. (3) Based on the land use pattern in 2020 and the ecological security pattern under the urban expansion scenario simulation in 2030, we identified 23 ecological source areas, 50 ecological corridors, and 21 ecological nodes in the study area. A comprehensive ecological security pattern under spatiotemporal dynamic changes was constructed. The results may provide theoretical basis for protecting the ecological environment in water network areas and for resisting external ecological risks, which is significant for promoting regional ecological security development.

Xiaowen Zhu; Chang Li
Healthcare, 2024 12 (17) - SCIE SSCI

摘要 : Online Health Information Seeking (OHIS) serves as an alternative form of social capital that can help older adults alleviate offline medical-related stress. This study collected and analyzed user interaction data from Patient-to-Doctor and Patient-to-Peer platforms and compared the roles of social support between them. Significant differences were identified in the dimensions of social support (information, emotional, and companion) on the Patient-to-Peer platforms compared with Patient-to-Doctor platforms (p < 0.05). The overall and core–core network density values for social support on Patient-to-Peer platforms were higher than those on Patient-to-Doctor platforms. Patient-to-Doctor interactions focused on information support, displaying a more centralized and efficient network with structural holes pertaining to treatment effects. By contrast, Patient-to-Peer interactions provided more emotional support, with a dispersed and redundant network containing structural holes related to individual information. Companion support was found to be weaker on both platforms. Additionally, digital literacy, surrogate seeking, and altruistic information significantly explained the variances between the two platforms (p < 0.01), with surrogate seeking playing a crucial role. These findings enhance our understanding of OHIS disparities among older adults and their surrogates, offering valuable insights for developing effective support systems and regulatory frameworks for health information platforms.

CHEN Jinliu; LI Pengcheng; WANG Haoqi
Journal of Resources & Ecology, 2024 15 (5)

摘要 : The intersection of environmental conservation and urban development has garnered global attention. This study aims to contribute to the theoretical foundation and policy recommendations for the collaborative governance of territory and the natural environment in metropolitan agglomerations. Employing a comprehensive Morphological Spatial Pattern Analysis (MSPA) approach, this research analyses and overlays various indicators, constructing an integrated evaluation system based on "natural resource management and conservation, land use, and ecological network assessment". Our findings reveal that: (1) The overall collaborative degree between the spatial configuration and natural environment in the Ecological Green Integration Development Demonstration Zone (EGIDDZ) is relatively high and still needs improvement at the micro level. Notably, regions characterised by elevated synergy levels exhibit considerable spatial overlap with ecological green cores outlined in territorial planning. (2) The selection and distribution of land use patterns are pivotal factors influencing collaborative levels, with multiple land use types favouring enhanced collaboration. By exploring the interplay between metropolitan territory and the natural environment using MSPA, this study seeks to provide holistic evaluation methodologies and governance insights for advancing sustainable urban planning and development.

SUN Honghu; JIANG Yupei
Geographical Research, 2024 43 (7)

摘要 : Urban vitality largely reflects the quality of life of urban residents and the high-quality level of urban development, and has always been a hot topic in urban geography and urban planning. In the transition period of urban development from incremental extension to stock connotation renewal, accurately identifying the spatial pattern of urban vitality under a people-oriented approach and revealing the spatial heterogeneity of the impact of built environment on it is a key prerequisite for scientifically enhancing urban vitality. Therefore, this paper attempts to take the central urban area of Nanjing as an example, based on geographic big data such as mobile signaling data and Baidu Map POI, and integrating the spatio-temporal attributes of daily activities of citizens as parameters to construct a measurement model of urban vitality, and analyze its spatial characteristics at the urban scale. On this basis, we expand the representation of "5D" built environment elements, construct an urban built environment impact indicator system that includes material space, social space, place space, and flow space elements, and use a multi-scale geographically weighted regression model (MGWR) to explore the spatial heterogeneity of the impact of built environment on urban vitality. These theoretical and empirical analyses provide scientific reference for the fine optimization of human-oriented urban vitality. The main findings are as follows: (1) The urban vitality measurement model based on big data of residents' activities, as well as the MGWR, can better identify the spatial pattern of vitality and reveal the spatial heterogeneity of the impact of built environment on it. (2) Urban vitality has a significant spatial polarization phenomenon, and its universal equilibrium, continuous conductivity and independent autonomy in spatial distribution are poor. (3) There is a correlation between built environment and urban vitality at different spatial scales, with positive and negative directions and varying degrees of strength. (4) The creation of urban vitality should be implemented according to the spatial and temporal scenes of resident activities, and the overall and local spatial relationships should be coordinated to improve the suitability and effectiveness of response strategies.

JIANG Yupei; ZHEN Feng; SUN Honghu
Progress in Geography, 2024 43 (7)

摘要 : Under the background of the construction of "Healthy China", cultivating healthy activity behaviors and creating a healthy activity environment are important aspects to improve the health level of urban residents, and are also the hotspots of current multidisciplinary research. This study constructed a theoretical analysis framework and indicator system based on the actual relationship between health level, daily activities, and activity environment. Taking Nanjing City as an example, this study identified the characteristics of daily activities and activity environment with health effects based on multi-source data, and put forward optimization strategies. The results show that: 1) Daily activities with health effects are mainly work and leisure-related, and the key dimensions are activity frequency, travel mode, and travel duration. The positive health effects of daily activities are reflected in activity opportunities, non-motorized traffic, and travel with public transportation, while the negative health effects are reflected in the long duration of activity travel. 2) The activity environment with health effects involves two major activity spaces: residential space and activity space, and the main dimensions are spatial location, travel environment, and social environment. Both positive promotion and negative inhibition are significant, and the impact of the same activity environment indicator is complex. The activity environment factors with positive health effects are mainly related to the comprehensive convenience of location, road connectivity, subway travel convenience, and facility environment density for residential space, and the convenience of neighborhood level, the richness of green space, and economic value for activity space. The negative health effects are mainly related to the convenience of subway travel for residential space, and convenience of neighborhood level, comprehensive convenience of location, walking convenience, and economic value for activity space. 3) Based on the results, this study proposed corresponding optimization strategies in terms of increasing the space-time opportunities for daily activity health benefits, and enriching and connecting the activity environment network to promote health.