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Dr. Jiguang Wang
Shanxi University

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0 Green Economy
0 Optimization
0 Supply Chain
0 Sustainability
0 Production Decision

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Supply Chain
Optimization
Sustainability
Production Decision

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Journal article
Published: 20 February 2021 in Sustainability
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Excellent service plays a vital role in the sustainability of enterprise and supply chains development in today's increasingly fierce market competition. However, due to the inevitable spillover effect in the competitive network, enterprises' initiative to improve the service level is reduced. From the perspective of negative spillover effect, optimization and decision-making in the competitive network of retailer-dominated supply chain are examined in this study. Considering four competitive situations in practical operation management, the corresponding double-layer compound nested Stackelberg game models are constructed, and the optimal equilibrium solutions are derived. Employing comprehensive comparison and analysis of the results, it is found that when the negative spillover effect of service increases, the optimal profit and service level of the leading supply chain or its retailers decrease, and the optimal retail price and overall optimal profit also gradually decline. For the leading supply chain, the centralized decision-making can achieve higher profits, and also more willing to improve the level of service. However, for the following supply chain, when the negative spillover effect of service is weak, the optimal service level under decentralized decision is higher, while when the spillover effect of service is strong, the optimal service level under integrated decision is higher. In addition, the supply chain-to-chain competition can bring negative incentives to the retailer that provides services, while for the rival that does not provide services, it can generate a certain free-riding effect that benefits them, and the effect is enhanced with the increase of competition.

ACS Style

Yucai Wu; Jiguang Wang; Lu Chen. Optimization and Decision of Supply Chain Considering Negative Spillover Effect and Service Competition. Sustainability 2021, 13, 2320 .

AMA Style

Yucai Wu, Jiguang Wang, Lu Chen. Optimization and Decision of Supply Chain Considering Negative Spillover Effect and Service Competition. Sustainability. 2021; 13 (4):2320.

Chicago/Turabian Style

Yucai Wu; Jiguang Wang; Lu Chen. 2021. "Optimization and Decision of Supply Chain Considering Negative Spillover Effect and Service Competition." Sustainability 13, no. 4: 2320.

Journal article
Published: 09 September 2020 in Sustainability
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Nowadays, the green supply chain has become an exciting concept in academic societies. This paper focuses on the optimal production decisions of two competing supply chains from the perspective of green degree. The manufacturers in each supply chain have two options—producing a green product or a non-green product. Game theory is applied to study four decision scenarios, which are derived from the difference in the products of the two supply chains. This study investigates the influence of inter-supply-chain competition on the wholesale price, green degree, and profits of the supply chain members. The results indicate that the inter-supply-chain competition has a negative correlation with the wholesale price. The inter-supply-chain competition has a significant impact on green degree in the four decision scenarios. In addition, green products are not always the dominant strategy of manufacturers. Both the competitors’ product decisions and the degree of inter-supply-chain competition should be considered. Finally, weak inter-supply-chain competition is beneficial to the leader supply chain, while strong competition is beneficial to the follower supply chain.

ACS Style

Jiguang Wang; Jianhong Chang; Yucai Wu. The Optimal Production Decision of Competing Supply Chains When Considering Green Degree: A Game-Theoretic Approach. Sustainability 2020, 12, 7413 .

AMA Style

Jiguang Wang, Jianhong Chang, Yucai Wu. The Optimal Production Decision of Competing Supply Chains When Considering Green Degree: A Game-Theoretic Approach. Sustainability. 2020; 12 (18):7413.

Chicago/Turabian Style

Jiguang Wang; Jianhong Chang; Yucai Wu. 2020. "The Optimal Production Decision of Competing Supply Chains When Considering Green Degree: A Game-Theoretic Approach." Sustainability 12, no. 18: 7413.

Journal article
Published: 09 May 2020 in Sustainability
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Although many studies examine the influence of external factors (e.g., financial development, institutional condition, government intervention, and degree of marketization) on firms’ innovation behavior, they are rarely related to the core issue of heterogeneity in entrepreneurship. The different levels of entrepreneurs’ characteristics usually mean huge differences in the skill level or efficiency of firms. Thus, the differences that exist in innovation ability and innovation behavior also reflect the difference of susceptibility to external factors. The core issue of heterogeneity determines not only the self-choice mode of a firm’s innovation but also the degree and pattern of an internal condition imposed by external factors, and it then influences the firm’s innovation behavior. Based on the perspective of entrepreneurship, this paper integrates heterogeneous trade theory into firms’ R&D analysis frameworks by using the data of listed companies on the Growth Enterprise Market to explore the heterogeneous influence mechanism of financial development and government intervention on firms’ R&D input. First, by constructing a theoretical model, this study finds that the innovation self-choice phenomenon exists in heterogeneous firms. A higher financial development and a lower government intervention lead to an increase in firms’ R&D input benefits. Second, the empirical research finds that financial development reduces the innovation‒cash flow sensitivity. Moreover, the reduction of government intervention alleviates the degree of capital misallocation of financial development and promotes R&D input. Third, as a moderator variable, entrepreneurs’ risk-taking propensity strengthens the promotion effect of financial development and government intervention on firms’ R&D investment. Financial development would strengthen the effect of government intervention on innovation self-choice behavior.

ACS Style

Jianfeng Zhao; Jiguang Wang. Regional Differences and Firms’ Innovation Self-Choice Behavior: Insights from China. Sustainability 2020, 12, 3866 .

AMA Style

Jianfeng Zhao, Jiguang Wang. Regional Differences and Firms’ Innovation Self-Choice Behavior: Insights from China. Sustainability. 2020; 12 (9):3866.

Chicago/Turabian Style

Jianfeng Zhao; Jiguang Wang. 2020. "Regional Differences and Firms’ Innovation Self-Choice Behavior: Insights from China." Sustainability 12, no. 9: 3866.

Journal article
Published: 17 March 2019 in Sustainability
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In today’s complex market competition environment, a high quality and high level of service plays a critical role in obtaining and maintaining long-term sustainable competitive advantage for enterprises and supply chains. Considering the service negative spillover effect, this paper investigates the horizontal Stackelberg competition and optimal service decision in two competing manufacturer-led supply chains. Four competitive structure models are constructed and the corresponding equilibrium solutions are obtained. By comparing the equilibrium results of four different structures, it is found that the service negative spillover effect and competition between supply chains have negative incentive effect on service providers and their supply chains. However, the chain-to-chain competition will benefit the supply chain that does not provide services from free-riding effect, which will be intensified with the intensification of competition. In addition, from the perspective of supply chain network and externality, we find that when the structure of one supply chain remains fixed and the other changes from centralized to decentralized, there will be a “double marginalization” effect. At the same time, the structural change from centralized to decentralized has certain “altruism”, that is, positive network externality, so as to improve the rival’s performance significantly.

ACS Style

Yucai Wu; Jiguang Wang; Changhong Li. Decisions of Supply Chain Considering Chain-to-Chain Competition and Service Negative Spillover Effect. Sustainability 2019, 11, 1612 .

AMA Style

Yucai Wu, Jiguang Wang, Changhong Li. Decisions of Supply Chain Considering Chain-to-Chain Competition and Service Negative Spillover Effect. Sustainability. 2019; 11 (6):1612.

Chicago/Turabian Style

Yucai Wu; Jiguang Wang; Changhong Li. 2019. "Decisions of Supply Chain Considering Chain-to-Chain Competition and Service Negative Spillover Effect." Sustainability 11, no. 6: 1612.

Research article
Published: 12 February 2019 in Complexity
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Today’s business environment is complex, dynamic, and uncertain which makes a supply chain facility increasingly vulnerable to disruption from various risk accidents as one of the main threats to the whole supply chain’s operation. However, in general, most of the studies on facility location problems assume that the facilities, once built, will always run availably and reliably. In fact, although the probability is very low, supply chain disruptions often incur disastrous consequences. Therefore, it is critical to account for disruptions during designing supply chain networks. To accomplish planned outcomes and greater supply chain resiliency, this article proposes a continuous approximation approach based on regular hexagon partition to address the reliable facility location problems with consideration of facility disruptions risk. The optimization goal is to determine the best facility location that minimizes the expected total system cost on the premise that the supply chain network is not disrupted as a whole when one or some facilities are subject to probabilistic failure. Our numerical experiment discusses the performance of the proposed solution approaches which demonstrates that the benefits of considering disruptions in the supply chain design can be significant. In addition, considering the impact of disruption probability estimation error on the optimal decision, the misestimating of the disruption probability is also investigated in this paper.

ACS Style

Jiguang Wang; Yucai Wu. A Continuous Approximation Approach Based on Regular Hexagon Partition for the Facility Location Problem under Disruptions Risk. Complexity 2019, 2019, 1 -12.

AMA Style

Jiguang Wang, Yucai Wu. A Continuous Approximation Approach Based on Regular Hexagon Partition for the Facility Location Problem under Disruptions Risk. Complexity. 2019; 2019 ():1-12.

Chicago/Turabian Style

Jiguang Wang; Yucai Wu. 2019. "A Continuous Approximation Approach Based on Regular Hexagon Partition for the Facility Location Problem under Disruptions Risk." Complexity 2019, no. : 1-12.

Journal article
Published: 31 August 2018 in Sustainability
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The classical location models implicitly assume that the facilities, once built, will always operate as planned. However, some of the facilities may become unavailable from time to time due to disruptions which highlight the urgent need to effectively manage supply chain disruptions in spite of their low probability of occurrence. Therefore, it is critical to take account of disruptions when designing a resilient supply chain network so that it performs well as a whole even after an accidental disruption. In this paper, a stylized facility location problem is considered in a continuous plane which is solved through an improved Voronoi-diagram-based algorithm under disruption risks. The research problem is to minimize the total cost in normal and failure scenarios. Furthermore, the impact of misestimating the disruption probability is also investigated. The results numerically show that although the estimated disruption probability has a significant impact on the facilities configuration, it has a minor impact on the total quantity of facilities and the expected total cost. Therefore, this paper proposes that the decision-maker should moderately overestimate disruption risk based on the “pessimistic principle”. Finally, the conclusion considers managerial insights and proposes potential areas for future research.

ACS Style

Jiguang Wang; Yucai Wu. An Improved Voronoi-Diagram-Based Algorithm for Continuous Facility Location Problem under Disruptions. Sustainability 2018, 10, 3099 .

AMA Style

Jiguang Wang, Yucai Wu. An Improved Voronoi-Diagram-Based Algorithm for Continuous Facility Location Problem under Disruptions. Sustainability. 2018; 10 (9):3099.

Chicago/Turabian Style

Jiguang Wang; Yucai Wu. 2018. "An Improved Voronoi-Diagram-Based Algorithm for Continuous Facility Location Problem under Disruptions." Sustainability 10, no. 9: 3099.

Journal article
Published: 30 August 2018 in Sustainability
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Regional innovation is very important for the sustainable development of regional economies. Innovation development between regions is not independent, and there is spatial correlation in innovation spillover. This paper uses the total amount of regional patent authorization as the measure of regional innovation and uses network analysis to study the spatial relationships among different regions. An unstructured vector autoregressive model is established to determine whether there is an association between any two regions, the causal relationship between which is tested by a Granger causality test. Having established the spatial network relationship, network analysis is used to further analyze the overall characteristics of the network, the individual characteristics of the network, and the block model of the network. We find that the provinces are closely related regarding regional innovation spillovers. However, the spatial correlation between the provinces differs greatly. Also, there is an obvious hierarchy between blocks that have different orientations and functions. Finally, the relationship between the interior of each block differs greatly in closeness degree.

ACS Style

Xinbao Tian; Jiguang Wang. Research on Spatial Correlation in Regional Innovation Spillover in China Based on Patents. Sustainability 2018, 10, 3090 .

AMA Style

Xinbao Tian, Jiguang Wang. Research on Spatial Correlation in Regional Innovation Spillover in China Based on Patents. Sustainability. 2018; 10 (9):3090.

Chicago/Turabian Style

Xinbao Tian; Jiguang Wang. 2018. "Research on Spatial Correlation in Regional Innovation Spillover in China Based on Patents." Sustainability 10, no. 9: 3090.

Journal article
Published: 01 August 2018 in Sustainability
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Regional innovation is of great significance to the sustainable development of a regional economy. However, there exists a disequilibrium development of output of regional innovation in China, which affects the imbalance of regional economic development to a certain extent. In order to explore the process and mechanism of the disequilibrium development in regional innovation, a new perspective is adopted in this paper to analyze the index of R&D (research and development) personnel, which is an important input element of regional innovation output. The regional samples, including 31 provinces in China, are divided into three parts: eastern region, central region, and western region. First, developing the tendency and speed of the disequilibrium of regional innovation output are analyzed by using σ convergent model and β convergent model, respectively, during the period of analyzing the process of the disequilibrium development. Then, the LMDI (logarithmic mean Divisia index) method is used to analyze the character of regional innovation output by using R&D personnel as an important endogenous factor during the period of analyzing the mechanism of the disequilibrium development. At last, we draw the conclusion of the study. We find that: (i) there is a gap in the absolute amount between regions in a long term, but the gap between regions is shrinking and the speed of catching up between regions is different; (ii) the efficiency of R&D personnel is the most positive effect of promoting equilibrium.

ACS Style

Xinbao Tian; Jiguang Wang. Research on the Disequilibrium Development of Output of Regional Innovation Based on R&D Personnel. Sustainability 2018, 10, 2708 .

AMA Style

Xinbao Tian, Jiguang Wang. Research on the Disequilibrium Development of Output of Regional Innovation Based on R&D Personnel. Sustainability. 2018; 10 (8):2708.

Chicago/Turabian Style

Xinbao Tian; Jiguang Wang. 2018. "Research on the Disequilibrium Development of Output of Regional Innovation Based on R&D Personnel." Sustainability 10, no. 8: 2708.

Journal article
Published: 25 April 2018 in Sustainability
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This paper investigates the horizontal Nash game and structure selection strategy in two competing dominant enterprises. Each firm decides whether to outsource the retail or manufacture to the exclusive third-party enterprise and thus forms a decentralized supply chain structure. On the premise that third-party enterprises have no advantage on sales and manufacture cost, the revenue-sharing contract is introduced between the manufacturer and retailer, and the influence of decentralized structure on the game equilibrium structure and supply chain profit is analyzed based on Hotelling model. The results show that, when compared with centralized structure, decentralized supply chain has the structural advantage to improving not only its supply chain profits but also the competing chain. This interesting insight is counterintuitive to the common “double marginalization” effect and explains the outsourcing strategy from the perspective of supply chain competition. In addition, we find the dominant strategy in the evolutionary game is that both two chains are decentralized or integrated.

ACS Style

Yucai Wu; Jiguang Wang; Changhong Li; Kan Su. Optimal Supply Chain Structural Choice under Horizontal Chain-to-Chain Competition. Sustainability 2018, 10, 1330 .

AMA Style

Yucai Wu, Jiguang Wang, Changhong Li, Kan Su. Optimal Supply Chain Structural Choice under Horizontal Chain-to-Chain Competition. Sustainability. 2018; 10 (5):1330.

Chicago/Turabian Style

Yucai Wu; Jiguang Wang; Changhong Li; Kan Su. 2018. "Optimal Supply Chain Structural Choice under Horizontal Chain-to-Chain Competition." Sustainability 10, no. 5: 1330.

Journal article
Published: 12 January 2018 in Sustainability
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Collaborative governance plays a critical role in guiding the whole supply chain to achieve its strategic goals. Today’s tremendously changing and competitive business environment imposes a significant challenge for firms to sustain a balance between their self-interest and the required interdependency existed among them within a supply chain. Built upon the extensive literature on the supply chain management, this paper theorizes and proposes a Sustainable Collaborative Governance Framework detailing adaptive decision-making and action mechanisms throughout supply chain lifecycle that will enable the whole supply chain proactively and resiliently respond to uncertainties or perturbations without undergoing significant changes to firms’ normal operations. The framework extends the understanding and practice of the sustainable supply chain management by focusing on its dynamic, elastic, holistic, uncertainty-handling and future-oriented characteristics.

ACS Style

Jiguang Wang; Bing Ran. Sustainable Collaborative Governance in Supply Chain. Sustainability 2018, 10, 171 .

AMA Style

Jiguang Wang, Bing Ran. Sustainable Collaborative Governance in Supply Chain. Sustainability. 2018; 10 (2):171.

Chicago/Turabian Style

Jiguang Wang; Bing Ran. 2018. "Sustainable Collaborative Governance in Supply Chain." Sustainability 10, no. 2: 171.