中国科学院数学与系统科学研究院期刊网

26 June 2025, Volume 45 Issue 6
    

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  • Xuanming NI, Zuqiang ZHOU, Miao JIANG, Huimin ZHAO
    Systems Engineering - Theory & Practice. 2025, 45(6): 1729-1744. https://doi.org/10.12011/SETP2024-1525
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    Different from the traditional financial sector, science and technology finance can effectively support scientific and technological activities, which is of great significance to enhance our country's independent innovation capacity and achieve high-quality economic development. This paper uses the entropy method to comprehensively evaluate the development level of science and technology finance from four dimensions: resources, funds, financing and output. Based on the panel data of 31 provinces from 2007 to 2021, a spatial econometric model is constructed to empirically test the impact of science and technology finance on technological innovation. It is found that sci-tech finance not only has a significant promoting effect on local technological innovation, but also has an obvious spatial spillover effect. If the spatial spillover effect is not considered, the impact of sci-tech finance on technological innovation will be underestimated. Further research shows that in the eastern region, the direct effect and spatial spillover effect of sci-tech finance on technological innovation are more significant, and sci-tech finance improves the level of regional technological innovation by easing the financing constraints of enterprises and optimizing the industrial structure. The research of this paper provides data support for evaluating the impact of science and technology finance, and also provides policy reference for exploring the path of technological innovation promotion.
  • Weimin XIE, Wo TIAN, Ke HE
    Systems Engineering - Theory & Practice. 2025, 45(6): 1745-1763. https://doi.org/10.12011/SETP2024-2858
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    The application of industrial robots has significantly advanced the process of intelligentization within the manufacturing sector, fundamentally transforming firm labor structures and providing critical opportunities for high-quality economic development. Utilizing data on robot applications in Chinese manufacturing firms from 2012 to 2022, we analyze the impact of industrial robot usage on the human capital structure of firms. Our findings indicate: 1) The application of industrial robots exerts substitution effects and creation effects, optimizing the human capital structure of firms. 2) Channel analysis indicates that industrial robot application optimizes the human capital structure through three pathways: enhancing safety production, improving innovation levels, and upgrading labor quality. 3) The heterogeneity test indicates that the use of industrial robots significantly enhances the upgrading of human capital structures in labor-intensive firms, firms experiencing rapid technological advancements, and regions with a more developed factor market. Against the backdrop of the national policy of "delayed retirement" aimed at mitigating the impacts of an aging population and rising labor costs, this study offers policy insights and empirical evidence to support firm quality enhancement and high-quality economic development.
  • Jianxiang WAN, Qiongfang LIU, Shanshan WANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1764-1787. https://doi.org/10.12011/SETP2023-2247
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    Artificial intelligence innovation is an engine for the formation of new quality productivity, which not only generates substantial social wealth but also exerts profound influence on employment opportunities and household consumption patterns. The key to promoting high-quality economic development lies in addressing the realistic dilemma of insufficient household consumption through enhancing demand-side capacity and optimizing the product supply system with the aid of artificial intelligence innovation. Based on the artificial intelligence innovation task model, this paper establishes a theoretical framework for the impact of artificial intelligence innovation on household consumption, providing a comprehensive understanding of the channels through which artificial intelligence innovation influences household consumption. Additionally, numerical simulations are conducted to validate the proposed theoretical model. Furthermore, empirical tests are conducted on the theoretical model using input-output data from various provinces between 2012 and 2020, as well as patent data from the State Intellectual Property Office. The findings indicate that: 1) Artificial intelligence innovation stimulates household consumption, with the promotion effect observed across various categories of consumption. Among them, the impact on enjoyment consumption is particularly significant, serving as a driving force for enhancing the quality and expansion of household consumption. Heterogeneity analysis reveals that artificial intelligence innovation has a stronger promotion effect on household consumption in the eastern region, urban areas, and industries characterized by high-skilled factor intensity. 2) The analysis of supply paths reveals that artificial intelligence innovation enhances household consumption through enhanced productivity and the realization of product innovation. Moreover, product innovation serves as the primary driver for promoting this effect. 3) The demand path analysis reveals that the "job creation effect" induced by artificial intelligence innovation exerts a lesser impact on the skill premium compared to the inhibitory "catfish effect", thereby enhancing household consumption capacity and fostering consumption growth.
  • Wenjia MA, Hongzheng ZHANG, Linlin ZHANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1788-1811. https://doi.org/10.12011/SETP2024-1016
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    Empowering green innovation with digital elements is a key path for enterprises to cultivate competitive advantages and achieve green upgrading. The accompanying question is whether digital transformation can effectively empower comprehensive iterative optimization of green innovation? Previous studies have only discussed the positive role of digital transformation in green innovation, but have overlooked the status and structural changes of innovation activities in different fields within green innovation during digital transformation, failing to clarify the current stage matching problem and internal mechanism between digitization and greenization. Based on this, this article classifies the green patent information retrieval of A-share listed companies from 2007 to 2022 according to the "International Patent Classification Green List", and summarizes the green innovation of management and design, production energy conservation, and end of pipe treatment according to application fields. Based on the resource allocation theory and technology consistency theory analysis, the asymmetric effect of digital transformation on green innovation is empirically examined. Research has found that digital transformation has significantly promoted green innovation in business management and design, but its empowering effect on green innovation in production energy conservation and end of pipe treatment is insufficient; compared to the application of digital business scenarios, the layout and development of digital underlying technologies have a more significant asymmetric effect on green innovation; from the perspective of R&D resource allocation, digital transformation promotes green innovation in business management and design, which is not only the result of adding new R&D resources, but also comes at the cost of squeezing out R&D resources for green innovation in other fields. Meanwhile, the tripartite governance factors of green innovation (market, government, and society) play an important role in the coordinated evolution of digitization and greening. The research conclusion of this article reflects the current situation of cultivating green competitive advantages through digital elements, that is, digital transformation mainly achieves the improvement of resource utilization efficiency in business processes through green upgrading in the field of information technology, and has a significant "local empowerment" effect. This discovery not only provides practical reference for the government to formulate more targeted policies and measures for the coordination of industrialization and informatization, but also provides practical basis for the optimization of enterprise innovation resource allocation and the formulation of innovation strategies.
  • Ting LI, Haosen CHENG, Wen ZHAO, Wenli LIU, Yuejun ZHANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1812-1827. https://doi.org/10.12011/SETP2024-1349
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    Green innovation is a key factor for firms to promote the sustainable development. Its relationship with firm performance has received extensive attention. What is largely missing from the existing studies, however, is the in-depth analysis and comparison on the impacts of diverse green innovation on different firm performance. Therefore, based on the data of Chinese listed firms from 2008 to 2022, this paper analyzes and compares the impacts of green management innovation and green technology innovation on firm short-term and long-term performance. The results show that, within the sample interval, green innovation can improve firm performance. However, green management innovation only has a significant positive effect on short-term performance, while green technology innovation only has a significant positive effect on long-term performance. This paper further finds that stakeholder engagement significantly strengthens both of these two boosting effects. Regional marketization only significantly strengthens the boosting effect of green technology innovation on long-term performance, and industrial competition has no significant moderating effect in the relationship between green innovation and firm performance.
  • Jia DING, Wei ZHOU, Yong ZHANG, Yaqiong DUAN, Zidong WANG, Xinghua XU, Maolin WANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1828-1845. https://doi.org/10.12011/SETP2024-1726
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    Digital twin map physical entities through simulation modeling, significantly enhancing system reliability and reducing maintenance costs by utilizing data fusion, behavior simulation, optimization decision-making, and visualization through virtual-physical interaction. In intelligent operation and maintenance practices, common challenges include poor data quality, scarcity of abnormal samples, and unclear degradation processes. Digital twin technology offers a novel paradigm to address these issues. This paper systematically reviews simulation and modeling techniques within digital twin applications, summarizing recent research advancements in key areas such as anomaly detection, remaining useful life prediction, fault diagnosis, and operation and maintenance decision-making. Focusing on the demands for intelligent equipment operation and maintenance, we summarize the research findings and technical pathways related to digital twin-driven intelligent maintenance. Based on prior theoretical research and practical applications, we propose a four-level hierarchy for digital twin-driven intelligent operation and maintenance. Furthermore, we illustrate the application of digital twin-driven intelligent maintenance in real-world scenarios with a case study on naval equipment. Finally, considering current research and engineering practices, this paper proposes future research directions to provide insights and guidance for digital twin-driven intelligent maintenance across the equipment life cycle.
  • Lizhi XING, Simeng YIN, Pengyang ZHANG, Shuo JIANG, Tianyu DUAN
    Systems Engineering - Theory & Practice. 2025, 45(6): 1846-1865. https://doi.org/10.12011/SETP2023-2290
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    Under the background of the accelerated reconstruction of the global industrial chain and supply chain, the United States tries to implement the friend-shoring and near-shoring strategy to reduce the dependence of its industrial chain and supply chain on China. Economies such as Southeast Asia and Mexico have become the main destination of China's industrial transfer, which is bound to have a negative impact on the impact scope, profitability and risk resistance of China's industrial sector in the global value chain. This paper uses the trade data of intermediate goods from the multi-regional input-output (MRIO) database to construct the global production network model, and extract the real network (null model) and artificial network (counterfactual model) that reflect the backbone of the global value chain from different perspectives, respectively. On this basis, it analyzes the potential impact of the United States' trade policy towards China on the restructuring of the global production network and the relocation risk of China's industrial chain. The results show that the friend-shoring strategy of the United States relying on Altasia and the near-shoring strategy relying on the United States-Mexico-Canada Agreement, and Canada will lead to the partial decoupling of the industrial chain and supply chain in the global scope, and moreover, the friend-shoring strategy has intensified the trend of economic anti-globalization and the risk of relocation of China's industrial chain. Finally, this paper puts forward policy suggestions to improve the resilience and security level of China's industrial chain and supply chain under the background of the United States' de-risking China-reliant supply chains.
  • Jie ZHU, Chen FU
    Systems Engineering - Theory & Practice. 2025, 45(6): 1866-1891. https://doi.org/10.12011/SETP2023-2953
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    Corporate transnational operation is an important link that cannot be ignored in building a new development pattern of dual circulation, but whether it will exacerbate internal shareholder opportunistic behavior has not been answered by existing research. The article takes Chinese A-share listed companies from 2007 to 2021 as samples and empirically explores the impact of corporate transnational operation on the stock selling behavior and stock selling motivation of internal shareholders based on the "Stock Selling Triangle Model" proposed in this article. Research has found that transnational operations will significantly exacerbate the stock selling behavior by internal shareholders of enterprises. By analyzing the motivation, we find that internal shareholders' stock selling behavior in multinational enterprises has obvious opportunistic characteristics and arbitrage tendency, which means that multinational corporations have a high risk of illegal stock selling behavior. This conclusion still holds after a series of robustness tests, such as multiple time point difference-in-difference model, Bartik instrumental variable method. The mechanism analysis found that transnational operation aggravated the market risk, information asymmetry and foam phenomenon faced by enterprises, which constituted the pressure, opportunity and excuse for stock selling behavior of internal shareholders. The heterogeneity tests find that corporate multinational operation mainly aggravated the stock selling behavior of directors, but does not exacerbate the stock selling behavior of supervisors and executives. The economic consequences tests find that the arbitrage stock selling of international enterprises will aggravate the risk of stock price collapse. However, continuous and stable export scale, strong policy supervision and good institutional investor governance environment, internal control environment and audit governance environment can effectively curb the internal shareholder arbitrage and stock selling under the background of enterprise internationalization strategy. This paper enriches the literatures in the field of corporate internationalization strategy and internal shareholder arbitrage stock selling. The research conclusions have practical significance for guiding stakeholders in the capital market to pay attention to the potential illegal stock selling risks of internationally operated enterprises.
  • Ting XIAO, Zhouyong CHEN
    Systems Engineering - Theory & Practice. 2025, 45(6): 1892-1909. https://doi.org/10.12011/SETP2023-2926
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    Servitization has emerged as a vital strategic option for manufacturing enterprises in mitigating market challenges. Extensive research has been conducted in various domains of business operations to investigate the key aspects of implementing this strategy. However, there is currently a dearth of observations from the supply chain perspective. Hence, this study aims to explore the influence of trade credit from suppliers as a focal point in the execution of servitization strategy. By employing signaling theory and empirical data from publicly listed manufacturing companies, it examines the potential impact of signals emanating from enterprise servitization on trade credit. The empirical analysis reveals a U-shaped relationship between servitization and trade credit. Moreover, the firm's financial flexibility negatively moderates this U-shaped relationship, whereas the relevance of services does not demonstrate a significant influence. Furthermore, subgroup analysis indicates that state-owned and light industry enterprises exhibit a relatively attenuated U-shaped relationship between servitization and trade credit compared to non-state-owned enterprises and equipment manufacturing firms. This article provides empirical evidence validating the effect of servitization on trade credit in the manufacturing industry, thereby offering crucial theoretical and managerial insights to scholars and practitioners in the field of operations management.
  • Yi LI, Wei ZHANG, Pengfei WANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1910-1927. https://doi.org/10.12011/SETP2023-1115
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    The rise of social media has altered the information landscape and participant behavior in capital markets. Against this backdrop, this study utilizes Sina Weibo data and explores the impact of listed companies' social media account usage on market reactions to analyst reports. Using regression analysis and instrumental variable methods, we find that if a listed company updates its Sina Weibo within a week before the release of an analyst report, market reactions to that report will significantly decrease. This suggests that a company's Weibo can partially substitute analyst reports in conveying information to the market. Furthermore, the more frequent the Weibo posts, the lengthier the posts, and the higher the volume of comments and reposts, the lower the proportion of institutional shareholdings in the listed company and the fewer analysts following it. The more pronounced the diminishing effect of Weibo usage on market reactions induced by analyst reports becomes. This study enriches our understanding of the interplay between information intermediaries in capital markets and the role social media plays in information dissemination.
  • Xiaodi HUANG, Yan ZENG, Yun DAI, Shouyang WANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 1928-1947. https://doi.org/10.12011/SETP2024-0826
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    This paper innovatively investigates the relationship between abnormal tone of China's listed companies, decided by managers' strategic choices, and bond credit spreads, from the perspective of earnings communication conferences, which are highly interactive in real time and difficult to prepare fully beforehand. The results show that the managers' abnormal tone at earnings communication conferences is significantly and negatively related to bond credit spreads. The mechanism analysis finds that abnormal tone is significantly and positively related to firms' future performance, and negatively associated with firms' bankruptcy risk, indicating that the abnormal tone, with incremental information, can be used as a reliable signal. This shows that the abnormal tone is consistent with the incremental information view, with incremental information other than financial quantitative information, which makes the pricing of the credit spread of the bonds more accurate. In addition, the negative relationship between abnormal tone and bond credit spreads is more pronounced in firms with less information transparency, lower institutional investor ownership, private firms, and bonds with higher bond coupon. Finally, the abnormal tone is significantly and positively associated with credit ratings and issue sizes of bond, significantly and negatively associated with issue spreads. The above results suggest that the abnormal tone of Chinese listed company's earnings presentations influences the cost of direct bond financing for companies, making higher-quality companies have lower financing costs and resulting in a multidimensional positive cross-market spillover effect on the bond market. These findings have important implications for improving bond market pricing efficiency, resolving bond market risk, and promoting high-quality information disclosure in the capital market.
  • Yaru SHANG, Chunguang BAI, Yu GUO
    Systems Engineering - Theory & Practice. 2025, 45(6): 1948-1959. https://doi.org/10.12011/SETP2024-0006
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    In the carbon neutrality background, forestry carbon sink projects have high investment cost and long return cycle, and the carbon emitting enterprise faces difficulties such as capital constraints. Based on realistic forestry carbon sink financing mechanisms, we develop three financing modes, i.e., bank carbon sink expected return pledge, industrial investment fund and BOT. In this paper, we compare and analyze the equilibrium results of the carbon emitting enterprise under different financing modes from the perspective of profit and carbon sink output. The study shows that when carbon emission is high, the enterprise prefers the industrial investment fund financing mode based on profit maximization, regardless of the change of own capital; When own capital is high but carbon emission is low, the enterprise prefers bank pledge financing mode; When both own capital and carbon emission are low, BOT financing mode is the best financing mode for the enterprise. Based on the perspective of sustainable development, the government should promote enterprises to adopt the industrial investment fund financing mode to achieve a win-win situation for both social economy and environment.
  • Jian CAO, Zhaolong BIAN, Jiawen LU, Xiuyan MA
    Systems Engineering - Theory & Practice. 2025, 45(6): 1960-1979. https://doi.org/10.12011/SETP2023-2285
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    According to the three different forms of extended producer responsibility (EPR) system in practice, aiming at the manufacturing-remanufacturing competition system composed of an original equipment manufacturer (OEM) and an independent remanufacturer (IR), three kinds of mixed regulations with EPR characteristics combined with the carbon tax are designed by constructing a dynamic game model. This paper discusses the effect of introducing the connotation of the EPR system on improving the efficiency of carbon tax policy. The results show that the existence of the carbon reduction technology spillover effect is significant for the performance of mixed regulations. Compared with the carbon tax policy, implementing the three mixed regulations can increase the consumer surplus and environmental performance and have more robust incentive effects on emission reduction and remanufacturing. However, the scope of the application is quite different. The mixed regulation based on levy and subsidy and reward and penalty can better balance the incentive effect of emission reduction, corporate profits, and environmental performance and bring higher social welfare to some extent. The conclusion of this study has a specific reference value for the combination design of EPR and carbon tax.
  • Qingxian AN, Yuxuan HAN, Ping WANG, Yao WEN
    Systems Engineering - Theory & Practice. 2025, 45(6): 1980-1994. https://doi.org/10.12011/SETP2023-1900
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    The increase of data scale and the acceleration of data update frequency bring challenges for efficiency evaluation. Free Disposal Hull (FDH) is a classical efficiency evaluation method under non-convex technology. Compared with data envelope analysis under convex technology, the efficiency solving process of FDH is more complicated, and it is difficult to ensure the timeliness of the evaluation results under the situation of rapid data updating. To address the above problems, firstly, the fast enumeration algorithm (FEA) based on the dominance and reference relationship between decision-making units is proposed on the basis of the existing enumeration algorithms, which is used to calculate the FDH efficiency of large-scale samples. Furthermore, based on the transitivity of the dominance and the reference relationship, the dynamic fast enumeration algorithm (DFEA) is proposed to update the efficiency results. Finally, the effectiveness of the algorithm is verified through numerical simulations and the application of the evaluation of doctors in the Haodaifu platform. The experimental results show that, compared with the enumeration algorithm, the time for FEA to complete the evaluation of the FDH efficiency of large-scale samples is significantly reduced, and the DFEA is capable of updating the FDH efficiency of large-scale samples in real time.
  • Siyi CHEN, Zhisheng CAO, Min XIE, Qingpei HU
    Systems Engineering - Theory & Practice. 2025, 45(6): 1995-2012. https://doi.org/10.12011/SETP2023-2282
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    The accelerated degradation testing (ADT) under constant stress is an effective means for reliability assessment. It extrapolates product reliability under normal stress conditions by analyzing degradation data at elevated stress levels. Common approaches for handling degradation data include the one-step and two-step methods. The one-step method entails model parameter estimation and subsequent inference by maximizing the log-likelihood function based on degradation data. On the other hand, the two-step method first estimates pseudo-lifetimes for each sample, which is then converted into accelerated life testing (ALT) analysis. With the advancement in computational capabilities, the one-step method has become computationally more tractable, and previous research has compared both one-step and two-step methods in non-accelerated contexts. However, literature comparing these two methods in the context of ADT remains scarce. This study aims to systematically compare these two methods for constant stress ADT systems, providing more accurate and efficient guidance for selecting reliability assessment methods suitable for ADT. In this paper, we introduce criteria for distinguishing between overestimation and underestimation of true lifetimes using pseudo-lifetimes and compare the performance of the one-step and two-step methods in estimating the mean time to failure (MTTF) through numerical simulations under linear degradation conditions. Furthermore, we apply these methods to a set of classic datasets, and the results align with the simulation findings. In summary, the simulation results indicate that, for various sample sizes and numbers of observations, the one-step method demonstrates higher accuracy in product MTTF assessment compared to the two-step method based on pseudo-lifetimes with different distributions. This advantage is particularly pronounced in small sample scenarios.
  • Zhimin WU, Guanghui CAI
    Systems Engineering - Theory & Practice. 2025, 45(6): 2013-2032. https://doi.org/10.12011/SETP2023-2399
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    Making full use of the current uncertain information in high-frequency trading data can help improve the modeling and prediction performance of asset volatility in the complex and volatile financial market environment. This article incorporates it into the realized multiplicative error model to develop the realized real-time MEM model for joint modeling of volatility and realized volatility. Unlike existing models, the new model treats the random error term obtained from current realized measure scaled by its volatility as the real-time intraday factor of high-frequency information, thereby characterizing the conditional volatility of asset returns as a mixed function driven by both historical realized measures and real-time intraday factor. Under the framework of the new model, we discuss some important properties such as the conditional distribution theorem and related properties, the weak and strict stationary conditions, the quasi-maximum likelihood estimation method, and the out-of-sample multi-step-ahead volatility prediction theorem. In addition, the proposed model is further extended to incorporate the leverage effect and volatility feedback effect of high-frequency current information. Taking four international stock datasets as the research object, the empirical results show that: 1) The current uncertain information of high-frequency data makes the conditional distribution of the realized measure have time-varying kurtosis characteristic, which enhances the ability to model volatility of financial returns. 2) Compared to benchmark models, the realized real-time MEM models provide higher out-of-sample forecasts in terms of volatility, conditional distribution of realized measure, and volatility at risk (VolaR).
  • Yiyue HE, Qianqian CHEN, Ni GAO, Lefang ZHANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 2033-2049. https://doi.org/10.12011/SETP2023-2326
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    In recent years, the global capital market is in a sharp shock situation. Gold's safe-haven and value-protection functions are more prominent, and its price prediction is highly regarded by investors. We combine MEMD's multi-frequency scale synchronous decomposition function and WGAN-GP's efficient extraction capability for complex patterns, and propose a multi-frequency scale integrated prediction model MEMD-WGAN-GP based on an influencing factors system using LASSO. Firstly, we select 30 indicators from macro policy, gold, stock and crude oil market, and construct an influencing factors system with LASSO. Secondly, we decompose explanatory variables and gold price synchronously using MEMD, to obtain IMFs under different frequency scales, and build WGAN-GP prediction model for each IMF. Then, we optimize the combination of IMFs and integrate the predicted values of optimized IMFs to obtain the overall predicted gold price. Finally, the predictive performance of MEMD-WGAN-GP is evaluated under different market conditions, and the results show that our model has the best trend prediction ability, the smallest regression prediction error and the lowest prediction lag.
  • Peipei LI, Shu'e MEI, Weijun ZHONG
    Systems Engineering - Theory & Practice. 2025, 45(6): 2050-2067. https://doi.org/10.12011/SETP2023-2080
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    The fast-growing social media not only provides merchants with a platform for product marketing but also serves as a channel for product sales. The introduction of social e-commerce channels alongside traditional e-commerce channels broadens the consumer market but intensifies channel competition. Therefore, manufacturers should fully consider user characteristics to make effective channel strategy selections. Based on three different supply chain structures: not introducing social channels, introducing self-operated social channels, and introducing third-party social channels, we build a model to study the impact of social channels on manufacturers. We show that when manufacturers introduce self-operated social channels, as the price competition between channels intensifies, if the potential demand for social channels is lower, it will reduce the wholesale price; conversely, it will increase the price. Moreover, when the potential demand for social channels is larger or when it is smaller, the degree of price competition is weaker, the proportion of fans is lower, and the difference between fans and general users is higher, social channels are always introduced. Furthermore, under the condition that manufacturers introduce social channels, as the difference between fans and general users widens, if the potential demand for social channels is lower, the possibility of serving as social retailers increases; conversely, the possibility of cooperating with third-party social retailers increases.
  • Pengfei WANG, Chu ZHANG, Xiangyu WANG, Peng LIU, Jingpeng WANG
    Systems Engineering - Theory & Practice. 2025, 45(6): 2068-2081. https://doi.org/10.12011/SETP2024-0240
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    Three types of parking facilities, i.e., on-street, off-street, and shared parking facilities, often coexist in an urban region, and their service characteristics are significantly different. The traffic system within the region typically exhibits uncertainty both in its evolutionary processes and in the observation of its state indicators. This study aims to minimize the total travel cost of participants in the regional traffic system, including area transit costs, parking search costs, management costs, and walking costs. To achieve this, a dual-driven model based on rolling optimization and data fusion estimation is proposed to design dynamic supply strategies for multi-type parking services in the region. The effectiveness of the strategy is verified through Monte Carlo numerical simulations. As a result, it is found that: First, the proposed dynamic optimization problem can be equivalently transformed into a quadratic programming problem with inequality constraints, and if a solution exists, it is guaranteed to be the unique global optimum; second, when considering uncertainties in both process and observation, a significant discrepancy may arise between the system observation outcomes and the system's target trajectory; finally, the introduction of Kalman filter can effectively reduce the gap between the posterior state estimation and the target trajectory, thereby enhancing traffic efficiency in the region and reducing the total travel cost.
  • Na LI, Zhongdan CUI, Feng ZHEN, Jinglin ZHANG, Zhihong JIN
    Systems Engineering - Theory & Practice. 2025, 45(6): 2082-2100. https://doi.org/10.12011/SETP2024-0530
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    In the port hinterland drayage operation, the uncertainty of turnaround time in ports brings significant challenges. This paper proposes an optimization method for external truck scheduling based on the prediction of turnaround time in ports. By analyzing the historical gate data of ports, extracting relevant features, and applying random forecast methods, a prediction model for the turnaround time of trucks is trained. In the optimization model for external truck scheduling, the turnaround time is fed back into the optimization model through repeated calls to the random forecast prediction model, thus formulating a more reliable container truck scheduling scheme. With the gate data of a container terminal in South China, the prediction model is trained, and the results show that it has high accuracy in fitting the prediction of port container truck turnaround time, and the goodness of fit is more than 0.9. In the numerical experiment of the optimization model, the median error is all distributed in 1%, indicating that the combination of machine learning-based prediction of turnaround time in ports and scheduling optimization can reduce the disturbance of uncertainty in turnaround time on the scheduling plan, and improve the reliability and effectiveness of the scheduling provided by drayage companies.