S. Thomas Ng’s research while affiliated with City University of Hong Kong and other places

... Temporal and spatial analysis plays a vital role in understanding the factors influencing variations in carbon emission intensity, as these factors often differ significantly across regions and over time (Huang et al., 2025;. From a temporal perspective (Fig. 2), the total carbon emissions from construction industry in China increased from 576.5 million tons in 2004 to 1998.51 million tons in 2020, with an average annual growth rate of 8.95%. ...

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Spatiotemporal Dynamics and Key Drivers of Carbon Emissions in Regional Construction Sectors: Insights from a Random Forest Model

... In the study of subway systems, a predictive comprehensive station criticality quantification method (PCSCQ) was proposed by combining complex network theory, deep learning, and MADM. By integrating network characteristics and predicted passenger flow data, the evaluation and prediction problems of dynamic changes in the criticality of key subway stations were successfully solved [113]. ...

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Application of Multiple-Criteria Decision-Making Technology in Emergency Decision-Making: Uncertainty, Heterogeneity, Dynamicity, and Interaction

... Sina Weibo is one of the largest and most influential social media platforms in China [29]. In China, Weibo provides more representative data compared to other platforms [30,31]. Additionally, studies have found that discussions on waste sorting on Weibo are related to factors such as urbanization levels and policy implementation, covering regions with varying economic development levels, including the East, Central, West, and Northeast [32,33]. ...

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Regional Sentimental Flows and Hierarchical Drivers of Urban Waste Sorting: An Integrated OCC-LSTM and LDA-DEMATEL-ISM Approach Using Social Media Data

... [18,21,27,[46][47][48][50][51][52][54][55][56] Design for Standardization. [32,46,51,[55][56][57] Design for Durability and Longevity. [18,20,25,46,58,59] Design for Modularity. ...

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Exploring Circular Economy Strategies in Buildings: Evaluating Feasibility, Stakeholders Influence, and the Role of the Building Lifecycle in Effective Adoption

... PB, with the largest proportion of office buildings (Huang et al., 2024), are the main sites of tertiary economic activities, and their CE are mainly affected by the level of economic development of the tertiary sector (Ma et al., 2019;Xiang et al., 2024). The economic activities of PB in the tertiary industry specifically include: PB in the TSP provide the infrastructure required for the transport of passengers and goods and the storage of goods. ...

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Allocation of carbon emissions from public buildings in China under the shared socioeconomic pathways: a tertiary industry perspective

... By providing a shared virtual visualization of the project, DTs promote transparency and empower stakeholders to assess progress and make informed decisions [42]. To ensure that stakeholders are on the same track during the modular building and operation phases, they facilitate information management and interchange [43]. Building Digital Twins (BDTs) enhances productivity and efficiency in construction site management by automating data collection and knowledge extraction, which reduces redundancies. ...

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AI-Powered Digital Twins and Internet of Things for Smart Cities and Sustainable Building Environment

... Within structural levels, the primary factors causing vulnerability in urban sewage pipeline systems are pipe diameter and flow capacity. During the long-distance transportation of domestic and industrial sewage, particulate matter and polymers in the pipelines, typically composed of sand, silt, organic matter, debris, and pollutants [28], tend to settle to the bottom of the pipes due to uneven flow rates and gravity, forming a sediment layer [29]. This reduces the effective cross-sectional area for sewage flow, increasing the risk of sewage overflow and pipe blockages, which can severely impact the environment [30,31]. ...

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Diagnosis and Assessment of Vulnerability Levels for Urban Sewage Pipeline Network System

... Key digital technologies-such as AI, big data, blockchain, the Internet of Things (IoT), and BIM-are crucial enablers of the circular economy (Kristoffersen et al., 2020). AI, encompassing deep learning and machine learning, has the potential to revolutionize CDW reduction and material reuse (Rodrigo et al., 2024;Wu et al., 2024b). Blockchain enables the traceability of material flow throughout the construction lifecycle, identifying CDW generation and opportunities for reduction (Rodrigo et al., 2024). ...

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Deciphering how digital functions enable circular economy practices in construction: A critical review of recent progress and future outlook

... strategies. This gap underscores the need for targeted capacity-building initiatives and training programs to equip construction professionals with the necessary skills to implement CE strategies effectively[86]. ...

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OPTIMIZING WASTE MANAGEMENT STRATEGIES FOR SUSTAINABLE CONSTRUCTION: ASSESSING THE IMPLEMENTATION OF CIRCULAR ECONOMY PRINCIPLES IN NIGERIA

... Unlike Jianguo Chen et al. (2019) [19] and Jiayuan Zheng et al. (2024) [41] who used the game model to analyze the impact of the government on the strategy of a single subject, this study incorporates the key multi-party stakeholders involved in C&DW recycling into the evolutionary game model, considering the strategic interaction of multiple participating subjects. Meanwhile, similar to Yangyue Su (2020) [1] and Su et al. (2024) [42], the same conclusion is reached that, compared with a single punishment or subsidy, the government intervention policy of combining subsidy and punishment is more reasonable and effective for the recycling industry. In addition, based on their research, this study takes into account the carbon emission reduction benefits of C&DW recycling and incorporates the carbon trading income parameter into the key factors affecting the strategies of various stakeholders. ...

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Paraphrase the Obstacles to the Recycling of Construction and Demolition Waste: A Perspective of the Evolutionary Game of Three Stakeholders