Abstract: This study develops a data-driven cost-control framework for a prefabricated concrete project in Shenzhen by integrating BIM, value engineering, and earned value management. Expert ratings identified design changes, construction methods, interdisciplinary coordination, and formwork turnover as the principal cost factors. BIM reduced component types from 69 to 44 and supported the closure of 136 clashes before fabrication, avoiding an estimated CNY 45,000 in change-related expenditure. Under consistent scenario assumptions, production, transportation, and direct installation labor costs decreased by approximately 12%, 15%, and 33%, respectively. Value engineering identified aluminum formwork as the preferred alternative, with a value coefficient of 1.3429. Earned value reviews showed that cumulative cost and schedule variances became positive in week 12, while CPI and SPI reached 1.0438 and 1.0277 in week 16. The case demonstrates a traceable cost-control loop, although the absence of a control project limits causal attribution. Read More

Abstract: As a key transitional energy source for achieving the "dual carbon" goals, the scientific and technological innovation capacity of the natural gas sector directly impacts China's energy security and industrial structure transformation. Based on 189 natural gas science and technology innovation policy documents issued by central and local authorities between 1978 and 2025, this study constructs a three-dimensional analytical framework encompassing "objectives – tools – actors" and employs content analysis and social network analysis methods to quantitatively deconstruct the structural characteristics of the policy system. The research reveals that China's natural gas science and technology innovation policies exhibit a distinct "triple disjunction" pattern: in terms of objectives, policy support for increasing upstream reserves and production is severely inadequate; in terms of tools, rigid constraint instruments such as measures and regulations account for less than 9%, creating a "soft constraint" dilemma; in terms of actors, cross-sectoral coordination is highly concentrated among a small number of core departments under the National Development and Reform Commission, resulting in a pattern of "formal coordination but substantive isolation." The root cause of this fragmentation lies in the compartmentalized administrative system, policy volatility driven by short-term political agendas, and an assessment and incentive mechanism that tends to "avoid addressing critical issues." These three dimensions reinforce each other, forming structural barriers that constrain innovation efficiency. Read More

Abstract: To reveal the driving path of supervisor’s moral leadership on workers’ proactive safety behavior in the context of Chinese construction management, this study constructs a conceptual model based on social exchange theory and cognitive appraisal theory, examining the relationships between moral leadership, team safety climate, psychological safety, and workers’ safety participation behavior. Data were collected from 268 valid questionnaires and analyzed using structural equation modeling. The findings indicate that: 1) Moral leadership directly and positively affects safety participation behavior (effect size = 0.180), and also exerts a positive indirect effect (total indirect effect size = 0.388); 2) Moral leadership significantly shapes team safety climate (effect size = 0.350), which in turn promotes safety participation behavior (effect size = 0.450), with safety climate playing a partial mediating role (effect size = 0.157); 3) Moral leadership significantly enhances workers’ psychological safety (effect size = 0.420), which positively influences safety participation behavior (effect size = 0.550), with psychological safety also serving as a partial mediator (effect size = 0.231). This study extends the application of paternalistic leadership theory in construction safety by focusing on the moral dimension, providing empirical evidence for construction firms to foster workers’ proactive safety behaviors through enhancing supervisors’ moral competence. Read More

Abstract: The rapid expansion of China's new-energy vehicle industry has driven an unprecedented surge in power-battery installations, making the large-scale management of retired batteries an increasingly urgent challenge. These batteries retain substantial residual capacity and, if subjected to scientifically grounded cascade utilization and recycling, could alleviate mounting pressures on critical resources such as lithium, nickel and cobalt, reduce China's external dependence on these materials, and maximize the value recovered from end-of-life batteries. Yet the absence of adequate treatment pathways poses a countervailing risk: improperly managed retired batteries can generate severe secondary environmental pollution with unpredictable ecological consequences. China's battery-recycling system remains at an early stage of development, underscoring the urgent need for a robust and efficient reverse logistics network. This study therefore focuses on reverse logistics network planning for retired power batteries from new-energy vehicles and offers a comprehensive review of existing research. It systematically examines relevant policies and the state of the art in reverse logistics network planning, revealing notable gaps: policy-oriented studies tend to concentrate on strategic interactions among subsidy recipients within game-theoretic frameworks while neglecting network planning after government subsidies, whereas network-planning studies rarely incorporate the effects of government subsidies. The study further identifies future research directions and likely development trends, aiming to provide theoretical and practical guidance for building a sound power-battery recycling system, promoting the sustainable development of the new-energy vehicle industry, and achieving the dual objectives of economic growth and environmental protection. Read More

Abstract: Against the backdrop of global environmental and energy challenges, electric vehicles (EV) have emerged as a pivotal direction for transportation development owing to their low energy consumption and low pollution. However, EV adoption remains constrained by lagging infrastructure, particularly the difficulty of charging. The siting and sizing of charging stations (CS) has therefore become a critical research problem. Early studies focused on location models under deterministic charging demand; as research has deepened, scholars have begun to address demand uncertainty from perspectives including dynamic evolution, spatiotemporal uncertainty, and multi-factor variability, thereby making siting models more practically relevant. In the domain of government subsidy policy, research has affirmed the positive role of subsidies in EV markets and charging infrastructure, progressing from fiscal and tax policies that support industrial growth to in-depth examinations of subsidy forms and phases. Nevertheless, notable gaps persist: most studies rely on hypothetical scenarios, lack organic integration of siting, capacity planning, and subsidies, and inadequately account for operator interests. Future research must address these gaps to advance sustainable EV industry development and to construct an efficient and rational energy supply system for electric mobility. Read More

Abstract: Purpose: This study systematically reviews the service forms, economic value manifestations, value evaluation methods, and existing evidence gaps of digital services for traditional culture in public libraries. It also examines the applicability of relevant analytical frameworks in the case of jade cultural activities.  Method: The literature search includes four conceptual groups, namely public library, traditional culture, digital service, and economic value. The search databases include Web of Science Core Collection, Scopus, Library, Information Science & Technology Abstracts (LISTA), and Library and Information Science Abstracts (LISA). The study also uses Google Scholar for title verification and citation tracing. The search update covers the period up to August 31, 2026. A total of 110 records enter the screening process, among which 68 studies enter full-text assessment, and 30 studies are finally included in the qualitative-descriptive synthesis. The data extraction content encompasses publication year, research region, traditional culture type, digital service form, research method, economic value indicator, and main research conclusions. The study uses the Mixed Methods Appraisal Tool (MMAT) as the reference framework for quality assessment. Results: Among the 30 included studies, 15 studies provided direct evidence from public libraries, and 15 studies offered transferable evidence from scenarios closely related to digital traditional culture. 19 studies identified clear digital service forms. 10 studies, accounting for 33.3%, provided evidence on direct economic evaluation or investment and costs; 19 studies, accounting for 63.3%, mainly offerred evidence on indirect value or behavioral transformation; 1 study focused on the economic value evaluation indicator system. The existing economic value mainly manifested as cost savings and resource utilization efficiency, willingness to pay, cultural consumption, return on investment, as well as broader public … Read More

Abstract: Green logistics quality management focuses on energy‑saving, pollution reduction and resource recycling in the whole logistics process. Its management effect directly determines carbon‑reduction benefits, enterprise operating costs and sustainability level of supply chains. Based on domestic and foreign research results and industrial reality, this paper sorts out the development status of green logistics in China from three dimensions: market scale and potential, technology application level, as well as equipment input and maintenance. Four prominent constraints restricting green logistics quality management are identified: excessive transformation and operation costs, insufficient government policy support with unsatisfactory implementation effects, poor enterprise management and service capacity, and fragmented market structure. Corresponding countermeasures are put forward from four directions: refined cost control, strengthened policy support and guidance, improved management and service capacity, and region‑differentiated operation. The study holds that the sound development of green logistics requires joint participation of the government, enterprises and consumers. A brief prospect for the future of the industry is provided in the end. Read More

Abstract: The focus of domestic urban construction has shifted to optimizing the spatial quality of existing urban areas. Urban construction no longer aims to create large new areas. The main goal of urban construction is to enhance the living quality of the existing spaces. As a result, the concept of renovating old communities has changed. The past community renovation work mainly dealt with basic hardware issues. Workers would repair community roads, replace old equipment, and clean the community environment. Now, community renovation work is not just about improving hardware facilities. Workers also optimize the living environment and protect the local cultural content of the community. The spatial form and community characteristics formed by long-term residents' living are valuable resources for community construction. Most of the old and elderly communities in China will adopt a unified renovation plan. The unified renovation plan can accelerate the construction progress. Workers can quickly improve community facilities and organize the overall environment of the community. The unified renovation method also has obvious disadvantages. The renovation work will destroy the long-term spatial layout and living scenarios formed by the community. Large-scale unified renovations will erase the unique characteristics of each community. The original living scenarios of the community continue to change. Residents' memories of the past of the community will gradually fade. The activity spaces of community neighbors are randomly modified. The emotional exchanges among residents decrease, and the sense of community belonging of residents continues to decline. Researchers conduct on-site visits and grassroots observations. The research results show that the renovation work of many elderly communities has problems of uneven development. The renovation progress of community hardware facilities is relatively fast. The progress of community cultural protection and cultural continuation … Read More

Abstract: This paper investigates the application of cold-chain logistics distribution in real road networks through the framework of dynamic vehicle routing problems (DVRP). It does not offer new empirical data, but gathers previous research on vehicle routing, dynamic routing models and cold chain distribution to explore how dynamic VRP formulations can support decision-making under real-time information, traffic fluctuations and temperature-control constraints. Based on taxonomies of DVRP variants, classification studies of vehicle routing problems and specific models for perishable products and multi-compartment refrigerated vehicles have been conducted, and this paper explores how logistics practitioners can adapt the dynamic VRP framework to real road conditions, such as time-dependent travel times, congestion, and heterogeneous customer requirements. Cold-chain distribution in practice is expected to integrate routing optimisation with risk management for product quality, customer satisfaction and environmental performance, and dynamic VRP approaches offer a practical, albeit not exhaustive, path to explore these trade-offs. Therefore, the application should be based on a well-defined problem, integrated with monitoring technology, and have realistic expectations for the limits of optimisation models. Read More

Abstract: In today's rapidly evolving technological landscape, fostering innovation is essential for organizations, particularly in engineering sectors where complex problem-solving is vital for success. Understanding the dynamics between organizational climate and employee capabilities provides valuable insights for enhancing performance and maintaining a competitive advantage. This study examines the impact of organizational innovation climate (OIC) on engineering innovation capability (EIC), focusing on the mediating role of self-efficacy and the moderating effect of supervisory support. Data were collected from employees working in engineering project contexts, where innovation is critical due to the technical and complex nature of tasks. The results demonstrate that a supportive innovation climate directly enhances employees' innovation capabilities. Furthermore, self-efficacy acts as a partial mediator in this relationship, highlighting the role of individual confidence in driving innovation. Supervisory support positively moderates the relationship between innovation climate and self-efficacy, reinforcing the importance of leadership in fostering an environment conducive to innovation. This research offers theoretical insights into the interplay between organizational climate and individual performance, contributing to the literature on innovation management. Additionally, it holds practical value for organizations seeking to cultivate a robust innovation culture, ultimately driving enhanced performance and competitiveness in the engineering domain. Read More

Abstract: Smartphones have been used to collect data on people's travel behaviour, but the quality of this data varies in accuracy and completeness. Using Google Maps Timeline and Fourstep, three study days in October-November 2025 were analysed for travel logs of 20 university students in Sydney. Collect records from both platforms and organise and align them by participant and day. Python was used to convert Google Maps Timeline JSON files into a structured dataset and obtain anonymised Fourstep records from the platform backend. The accuracy of trip completion, temporal-spatial consistency, segmentation accuracy, mode recognition accuracy and participant-level error rate were also recorded. FourStep had a finer division of trips and fewer missing or misclassified segments; Google Maps Timeline was better at locating major activity spots and some types of motorised travel. The mean error rate was 1.3% for Fourstep and 18.9% for Google Maps Timeline, with a significant within-participant difference, F(1,19)=10.67, p=0.004. The findings indicate that platform choice should depend on the intended modelling task rather than on a single notion of accuracy. Read More